From 91d1b7e8576d756695856170a2902de4431e8e3d Mon Sep 17 00:00:00 2001 From: Pat White Date: Thu, 14 Mar 2019 10:16:41 -1000 Subject: [PATCH 01/70] Added opts around --- packages/bitcore-lib/bitcore-lib.js | 97309 ++++++++-------- .../lib/transaction/transaction.js | 8 +- packages/bitcore-lib/package-lock.json | 2712 +- 3 files changed, 50562 insertions(+), 49467 deletions(-) diff --git a/packages/bitcore-lib/bitcore-lib.js b/packages/bitcore-lib/bitcore-lib.js index acf542d8a59..77974f8278d 100644 --- a/packages/bitcore-lib/bitcore-lib.js +++ b/packages/bitcore-lib/bitcore-lib.js @@ -1,56387 +1,54785 @@ require=(function(){function r(e,n,t){function o(i,f){if(!n[i]){if(!e[i]){var c="function"==typeof require&&require;if(!f&&c)return c(i,!0);if(u)return u(i,!0);var a=new Error("Cannot find module '"+i+"'");throw a.code="MODULE_NOT_FOUND",a}var p=n[i]={exports:{}};e[i][0].call(p.exports,function(r){var n=e[i][1][r];return o(n||r)},p,p.exports,r,e,n,t)}return n[i].exports}for(var u="function"==typeof require&&require,i=0;i'; +}; - this._useArgs(args); +module.exports = Address; - return this; - }; -}); +var Script = require('./script'); -Node.prototype.use = function use(item) { - assert(item); - var state = this._baseState; +}).call(this,require("buffer").Buffer) +},{"./crypto/hash":8,"./encoding/base58check":13,"./errors":17,"./networks":22,"./publickey":25,"./script":26,"./util/js":45,"./util/preconditions":46,"buffer":100,"lodash":156}],2:[function(require,module,exports){ +(function (Buffer){ +'use strict'; - assert(state.use === null); - state.use = item; +var _ = require('lodash'); +var BlockHeader = require('./blockheader'); +var BN = require('../crypto/bn'); +var BufferUtil = require('../util/buffer'); +var BufferReader = require('../encoding/bufferreader'); +var BufferWriter = require('../encoding/bufferwriter'); +var Hash = require('../crypto/hash'); +var Transaction = require('../transaction'); +var $ = require('../util/preconditions'); +/** + * Instantiate a Block from a Buffer, JSON object, or Object with + * the properties of the Block + * + * @param {*} - A Buffer, JSON string, or Object + * @returns {Block} + * @constructor + */ +function Block(arg) { + if (!(this instanceof Block)) { + return new Block(arg); + } + _.extend(this, Block._from(arg)); return this; -}; - -Node.prototype.optional = function optional() { - var state = this._baseState; +} - state.optional = true; +// https://github.com/bitcoin/bitcoin/blob/b5fa132329f0377d787a4a21c1686609c2bfaece/src/primitives/block.h#L14 +Block.MAX_BLOCK_SIZE = 1000000; - return this; +/** + * @param {*} - A Buffer, JSON string or Object + * @returns {Object} - An object representing block data + * @throws {TypeError} - If the argument was not recognized + * @private + */ +Block._from = function _from(arg) { + var info = {}; + if (BufferUtil.isBuffer(arg)) { + info = Block._fromBufferReader(BufferReader(arg)); + } else if (_.isObject(arg)) { + info = Block._fromObject(arg); + } else { + throw new TypeError('Unrecognized argument for Block'); + } + return info; }; -Node.prototype.def = function def(val) { - var state = this._baseState; - - assert(state['default'] === null); - state['default'] = val; - state.optional = true; - - return this; +/** + * @param {Object} - A plain JavaScript object + * @returns {Object} - An object representing block data + * @private + */ +Block._fromObject = function _fromObject(data) { + var transactions = []; + data.transactions.forEach(function(tx) { + if (tx instanceof Transaction) { + transactions.push(tx); + } else { + transactions.push(Transaction().fromObject(tx)); + } + }); + var info = { + header: BlockHeader.fromObject(data.header), + transactions: transactions + }; + return info; }; -Node.prototype.explicit = function explicit(num) { - var state = this._baseState; - - assert(state.explicit === null && state.implicit === null); - state.explicit = num; - - return this; +/** + * @param {Object} - A plain JavaScript object + * @returns {Block} - An instance of block + */ +Block.fromObject = function fromObject(obj) { + var info = Block._fromObject(obj); + return new Block(info); }; -Node.prototype.implicit = function implicit(num) { - var state = this._baseState; - - assert(state.explicit === null && state.implicit === null); - state.implicit = num; +/** + * @param {BufferReader} - Block data + * @returns {Object} - An object representing the block data + * @private + */ +Block._fromBufferReader = function _fromBufferReader(br) { + var info = {}; + $.checkState(!br.finished(), 'No block data received'); + info.header = BlockHeader.fromBufferReader(br); + var transactions = br.readVarintNum(); + info.transactions = []; + for (var i = 0; i < transactions; i++) { + info.transactions.push(Transaction().fromBufferReader(br)); + } + return info; +}; - return this; +/** + * @param {BufferReader} - A buffer reader of the block + * @returns {Block} - An instance of block + */ +Block.fromBufferReader = function fromBufferReader(br) { + $.checkArgument(br, 'br is required'); + var info = Block._fromBufferReader(br); + return new Block(info); }; -Node.prototype.obj = function obj() { - var state = this._baseState; - var args = Array.prototype.slice.call(arguments); +/** + * @param {Buffer} - A buffer of the block + * @returns {Block} - An instance of block + */ +Block.fromBuffer = function fromBuffer(buf) { + return Block.fromBufferReader(new BufferReader(buf)); +}; - state.obj = true; +/** + * @param {string} - str - A hex encoded string of the block + * @returns {Block} - A hex encoded string of the block + */ +Block.fromString = function fromString(str) { + var buf = Buffer.from(str, 'hex'); + return Block.fromBuffer(buf); +}; - if (args.length !== 0) - this._useArgs(args); +/** + * @param {Binary} - Raw block binary data or buffer + * @returns {Block} - An instance of block + */ +Block.fromRawBlock = function fromRawBlock(data) { + if (!BufferUtil.isBuffer(data)) { + data = Buffer.from(data, 'binary'); + } + var br = BufferReader(data); + br.pos = Block.Values.START_OF_BLOCK; + var info = Block._fromBufferReader(br); + return new Block(info); +}; - return this; +/** + * @returns {Object} - A plain object with the block properties + */ +Block.prototype.toObject = Block.prototype.toJSON = function toObject() { + var transactions = []; + this.transactions.forEach(function(tx) { + transactions.push(tx.toObject()); + }); + return { + header: this.header.toObject(), + transactions: transactions + }; }; -Node.prototype.key = function key(newKey) { - var state = this._baseState; +/** + * @returns {Buffer} - A buffer of the block + */ +Block.prototype.toBuffer = function toBuffer() { + return this.toBufferWriter().concat(); +}; - assert(state.key === null); - state.key = newKey; +/** + * @returns {string} - A hex encoded string of the block + */ +Block.prototype.toString = function toString() { + return this.toBuffer().toString('hex'); +}; - return this; +/** + * @param {BufferWriter} - An existing instance of BufferWriter + * @returns {BufferWriter} - An instance of BufferWriter representation of the Block + */ +Block.prototype.toBufferWriter = function toBufferWriter(bw) { + if (!bw) { + bw = new BufferWriter(); + } + bw.write(this.header.toBuffer()); + bw.writeVarintNum(this.transactions.length); + for (var i = 0; i < this.transactions.length; i++) { + this.transactions[i].toBufferWriter(bw); + } + return bw; }; -Node.prototype.any = function any() { - var state = this._baseState; +/** + * Will iterate through each transaction and return an array of hashes + * @returns {Array} - An array with transaction hashes + */ +Block.prototype.getTransactionHashes = function getTransactionHashes() { + var hashes = []; + if (this.transactions.length === 0) { + return [Block.Values.NULL_HASH]; + } + for (var t = 0; t < this.transactions.length; t++) { + hashes.push(this.transactions[t]._getHash()); + } + return hashes; +}; - state.any = true; +/** + * Will build a merkle tree of all the transactions, ultimately arriving at + * a single point, the merkle root. + * @link https://en.bitcoin.it/wiki/Protocol_specification#Merkle_Trees + * @returns {Array} - An array with each level of the tree after the other. + */ +Block.prototype.getMerkleTree = function getMerkleTree() { - return this; -}; + var tree = this.getTransactionHashes(); -Node.prototype.choice = function choice(obj) { - var state = this._baseState; + var j = 0; + for (var size = this.transactions.length; size > 1; size = Math.floor((size + 1) / 2)) { + for (var i = 0; i < size; i += 2) { + var i2 = Math.min(i + 1, size - 1); + var buf = Buffer.concat([tree[j + i], tree[j + i2]]); + tree.push(Hash.sha256sha256(buf)); + } + j += size; + } - assert(state.choice === null); - state.choice = obj; - this._useArgs(Object.keys(obj).map(function(key) { - return obj[key]; - })); + return tree; +}; - return this; +/** + * Calculates the merkleRoot from the transactions. + * @returns {Buffer} - A buffer of the merkle root hash + */ +Block.prototype.getMerkleRoot = function getMerkleRoot() { + var tree = this.getMerkleTree(); + return tree[tree.length - 1]; }; -Node.prototype.contains = function contains(item) { - var state = this._baseState; +/** + * Verifies that the transactions in the block match the header merkle root + * @returns {Boolean} - If the merkle roots match + */ +Block.prototype.validMerkleRoot = function validMerkleRoot() { - assert(state.use === null); - state.contains = item; + var h = new BN(this.header.merkleRoot.toString('hex'), 'hex'); + var c = new BN(this.getMerkleRoot().toString('hex'), 'hex'); - return this; + if (h.cmp(c) !== 0) { + return false; + } + + return true; }; -// -// Decoding -// - -Node.prototype._decode = function decode(input, options) { - var state = this._baseState; - - // Decode root node - if (state.parent === null) - return input.wrapResult(state.children[0]._decode(input, options)); +/** + * @returns {Buffer} - The little endian hash buffer of the header + */ +Block.prototype._getHash = function() { + return this.header._getHash(); +}; - var result = state['default']; - var present = true; +var idProperty = { + configurable: false, + enumerable: true, + /** + * @returns {string} - The big endian hash buffer of the header + */ + get: function() { + if (!this._id) { + this._id = this.header.id; + } + return this._id; + }, + set: _.noop +}; +Object.defineProperty(Block.prototype, 'id', idProperty); +Object.defineProperty(Block.prototype, 'hash', idProperty); - var prevKey = null; - if (state.key !== null) - prevKey = input.enterKey(state.key); +/** + * @returns {string} - A string formatted for the console + */ +Block.prototype.inspect = function inspect() { + return ''; +}; - // Check if tag is there - if (state.optional) { - var tag = null; - if (state.explicit !== null) - tag = state.explicit; - else if (state.implicit !== null) - tag = state.implicit; - else if (state.tag !== null) - tag = state.tag; +Block.Values = { + START_OF_BLOCK: 8, // Start of block in raw block data + NULL_HASH: Buffer.from('0000000000000000000000000000000000000000000000000000000000000000', 'hex') +}; - if (tag === null && !state.any) { - // Trial and Error - var save = input.save(); - try { - if (state.choice === null) - this._decodeGeneric(state.tag, input, options); - else - this._decodeChoice(input, options); - present = true; - } catch (e) { - present = false; - } - input.restore(save); - } else { - present = this._peekTag(input, tag, state.any); +module.exports = Block; - if (input.isError(present)) - return present; - } - } +}).call(this,require("buffer").Buffer) +},{"../crypto/bn":6,"../crypto/hash":8,"../encoding/bufferreader":14,"../encoding/bufferwriter":15,"../transaction":29,"../util/buffer":44,"../util/preconditions":46,"./blockheader":3,"buffer":100,"lodash":156}],3:[function(require,module,exports){ +(function (Buffer){ +'use strict'; - // Push object on stack - var prevObj; - if (state.obj && present) - prevObj = input.enterObject(); +var _ = require('lodash'); +var BN = require('../crypto/bn'); +var BufferUtil = require('../util/buffer'); +var BufferReader = require('../encoding/bufferreader'); +var BufferWriter = require('../encoding/bufferwriter'); +var Hash = require('../crypto/hash'); +var JSUtil = require('../util/js'); +var $ = require('../util/preconditions'); - if (present) { - // Unwrap explicit values - if (state.explicit !== null) { - var explicit = this._decodeTag(input, state.explicit); - if (input.isError(explicit)) - return explicit; - input = explicit; - } +var GENESIS_BITS = 0x1d00ffff; - var start = input.offset; +/** + * Instantiate a BlockHeader from a Buffer, JSON object, or Object with + * the properties of the BlockHeader + * + * @param {*} - A Buffer, JSON string, or Object + * @returns {BlockHeader} - An instance of block header + * @constructor + */ +var BlockHeader = function BlockHeader(arg) { + if (!(this instanceof BlockHeader)) { + return new BlockHeader(arg); + } + var info = BlockHeader._from(arg); + this.version = info.version; + this.prevHash = info.prevHash; + this.merkleRoot = info.merkleRoot; + this.time = info.time; + this.timestamp = info.time; + this.bits = info.bits; + this.nonce = info.nonce; - // Unwrap implicit and normal values - if (state.use === null && state.choice === null) { - if (state.any) - var save = input.save(); - var body = this._decodeTag( - input, - state.implicit !== null ? state.implicit : state.tag, - state.any - ); - if (input.isError(body)) - return body; + if (info.hash) { + $.checkState( + this.hash === info.hash, + 'Argument object hash property does not match block hash.' + ); + } - if (state.any) - result = input.raw(save); - else - input = body; - } + return this; +}; - if (options && options.track && state.tag !== null) - options.track(input.path(), start, input.length, 'tagged'); +/** + * @param {*} - A Buffer, JSON string or Object + * @returns {Object} - An object representing block header data + * @throws {TypeError} - If the argument was not recognized + * @private + */ +BlockHeader._from = function _from(arg) { + var info = {}; + if (BufferUtil.isBuffer(arg)) { + info = BlockHeader._fromBufferReader(BufferReader(arg)); + } else if (_.isObject(arg)) { + info = BlockHeader._fromObject(arg); + } else { + throw new TypeError('Unrecognized argument for BlockHeader'); + } + return info; +}; - if (options && options.track && state.tag !== null) - options.track(input.path(), input.offset, input.length, 'content'); +/** + * @param {Object} - A JSON string + * @returns {Object} - An object representing block header data + * @private + */ +BlockHeader._fromObject = function _fromObject(data) { + $.checkArgument(data, 'data is required'); + var prevHash = data.prevHash; + var merkleRoot = data.merkleRoot; + if (_.isString(data.prevHash)) { + prevHash = BufferUtil.reverse(Buffer.from(data.prevHash, 'hex')); + } + if (_.isString(data.merkleRoot)) { + merkleRoot = BufferUtil.reverse(Buffer.from(data.merkleRoot, 'hex')); + } + var info = { + hash: data.hash, + version: data.version, + prevHash: prevHash, + merkleRoot: merkleRoot, + time: data.time, + timestamp: data.time, + bits: data.bits, + nonce: data.nonce + }; + return info; +}; - // Select proper method for tag - if (state.any) - result = result; - else if (state.choice === null) - result = this._decodeGeneric(state.tag, input, options); - else - result = this._decodeChoice(input, options); +/** + * @param {Object} - A plain JavaScript object + * @returns {BlockHeader} - An instance of block header + */ +BlockHeader.fromObject = function fromObject(obj) { + var info = BlockHeader._fromObject(obj); + return new BlockHeader(info); +}; - if (input.isError(result)) - return result; +/** + * @param {Binary} - Raw block binary data or buffer + * @returns {BlockHeader} - An instance of block header + */ +BlockHeader.fromRawBlock = function fromRawBlock(data) { + if (!BufferUtil.isBuffer(data)) { + data = Buffer.from(data, 'binary'); + } + var br = BufferReader(data); + br.pos = BlockHeader.Constants.START_OF_HEADER; + var info = BlockHeader._fromBufferReader(br); + return new BlockHeader(info); +}; - // Decode children - if (!state.any && state.choice === null && state.children !== null) { - state.children.forEach(function decodeChildren(child) { - // NOTE: We are ignoring errors here, to let parser continue with other - // parts of encoded data - child._decode(input, options); - }); - } +/** + * @param {Buffer} - A buffer of the block header + * @returns {BlockHeader} - An instance of block header + */ +BlockHeader.fromBuffer = function fromBuffer(buf) { + var info = BlockHeader._fromBufferReader(BufferReader(buf)); + return new BlockHeader(info); +}; - // Decode contained/encoded by schema, only in bit or octet strings - if (state.contains && (state.tag === 'octstr' || state.tag === 'bitstr')) { - var data = new DecoderBuffer(result); - result = this._getUse(state.contains, input._reporterState.obj) - ._decode(data, options); - } - } +/** + * @param {string} - A hex encoded buffer of the block header + * @returns {BlockHeader} - An instance of block header + */ +BlockHeader.fromString = function fromString(str) { + var buf = Buffer.from(str, 'hex'); + return BlockHeader.fromBuffer(buf); +}; - // Pop object - if (state.obj && present) - result = input.leaveObject(prevObj); +/** + * @param {BufferReader} - A BufferReader of the block header + * @returns {Object} - An object representing block header data + * @private + */ +BlockHeader._fromBufferReader = function _fromBufferReader(br) { + var info = {}; + info.version = br.readInt32LE(); + info.prevHash = br.read(32); + info.merkleRoot = br.read(32); + info.time = br.readUInt32LE(); + info.bits = br.readUInt32LE(); + info.nonce = br.readUInt32LE(); + return info; +}; - // Set key - if (state.key !== null && (result !== null || present === true)) - input.leaveKey(prevKey, state.key, result); - else if (prevKey !== null) - input.exitKey(prevKey); +/** + * @param {BufferReader} - A BufferReader of the block header + * @returns {BlockHeader} - An instance of block header + */ +BlockHeader.fromBufferReader = function fromBufferReader(br) { + var info = BlockHeader._fromBufferReader(br); + return new BlockHeader(info); +}; - return result; +/** + * @returns {Object} - A plain object of the BlockHeader + */ +BlockHeader.prototype.toObject = BlockHeader.prototype.toJSON = function toObject() { + return { + hash: this.hash, + version: this.version, + prevHash: BufferUtil.reverse(this.prevHash).toString('hex'), + merkleRoot: BufferUtil.reverse(this.merkleRoot).toString('hex'), + time: this.time, + bits: this.bits, + nonce: this.nonce + }; }; -Node.prototype._decodeGeneric = function decodeGeneric(tag, input, options) { - var state = this._baseState; +/** + * @returns {Buffer} - A Buffer of the BlockHeader + */ +BlockHeader.prototype.toBuffer = function toBuffer() { + return this.toBufferWriter().concat(); +}; - if (tag === 'seq' || tag === 'set') - return null; - if (tag === 'seqof' || tag === 'setof') - return this._decodeList(input, tag, state.args[0], options); - else if (/str$/.test(tag)) - return this._decodeStr(input, tag, options); - else if (tag === 'objid' && state.args) - return this._decodeObjid(input, state.args[0], state.args[1], options); - else if (tag === 'objid') - return this._decodeObjid(input, null, null, options); - else if (tag === 'gentime' || tag === 'utctime') - return this._decodeTime(input, tag, options); - else if (tag === 'null_') - return this._decodeNull(input, options); - else if (tag === 'bool') - return this._decodeBool(input, options); - else if (tag === 'objDesc') - return this._decodeStr(input, tag, options); - else if (tag === 'int' || tag === 'enum') - return this._decodeInt(input, state.args && state.args[0], options); +/** + * @returns {string} - A hex encoded string of the BlockHeader + */ +BlockHeader.prototype.toString = function toString() { + return this.toBuffer().toString('hex'); +}; - if (state.use !== null) { - return this._getUse(state.use, input._reporterState.obj) - ._decode(input, options); - } else { - return input.error('unknown tag: ' + tag); +/** + * @param {BufferWriter} - An existing instance BufferWriter + * @returns {BufferWriter} - An instance of BufferWriter representation of the BlockHeader + */ +BlockHeader.prototype.toBufferWriter = function toBufferWriter(bw) { + if (!bw) { + bw = new BufferWriter(); } + bw.writeInt32LE(this.version); + bw.write(this.prevHash); + bw.write(this.merkleRoot); + bw.writeUInt32LE(this.time); + bw.writeUInt32LE(this.bits); + bw.writeUInt32LE(this.nonce); + return bw; }; -Node.prototype._getUse = function _getUse(entity, obj) { +/** + * Returns the target difficulty for this block + * @param {Number} bits + * @returns {BN} An instance of BN with the decoded difficulty bits + */ +BlockHeader.prototype.getTargetDifficulty = function getTargetDifficulty(bits) { + bits = bits || this.bits; - var state = this._baseState; - // Create altered use decoder if implicit is set - state.useDecoder = this._use(entity, obj); - assert(state.useDecoder._baseState.parent === null); - state.useDecoder = state.useDecoder._baseState.children[0]; - if (state.implicit !== state.useDecoder._baseState.implicit) { - state.useDecoder = state.useDecoder.clone(); - state.useDecoder._baseState.implicit = state.implicit; + var target = new BN(bits & 0xffffff); + var mov = 8 * ((bits >>> 24) - 3); + while (mov-- > 0) { + target = target.mul(new BN(2)); } - return state.useDecoder; + return target; }; -Node.prototype._decodeChoice = function decodeChoice(input, options) { - var state = this._baseState; - var result = null; - var match = false; - - Object.keys(state.choice).some(function(key) { - var save = input.save(); - var node = state.choice[key]; - try { - var value = node._decode(input, options); - if (input.isError(value)) - return false; +/** + * @link https://en.bitcoin.it/wiki/Difficulty + * @return {Number} + */ +BlockHeader.prototype.getDifficulty = function getDifficulty() { + var difficulty1TargetBN = this.getTargetDifficulty(GENESIS_BITS).mul(new BN(Math.pow(10, 8))); + var currentTargetBN = this.getTargetDifficulty(); - result = { type: key, value: value }; - match = true; - } catch (e) { - input.restore(save); - return false; - } - return true; - }, this); + var difficultyString = difficulty1TargetBN.div(currentTargetBN).toString(10); + var decimalPos = difficultyString.length - 8; + difficultyString = difficultyString.slice(0, decimalPos) + '.' + difficultyString.slice(decimalPos); - if (!match) - return input.error('Choice not matched'); + return parseFloat(difficultyString); +}; - return result; +/** + * @returns {Buffer} - The little endian hash buffer of the header + */ +BlockHeader.prototype._getHash = function hash() { + var buf = this.toBuffer(); + return Hash.sha256sha256(buf); }; -// -// Encoding -// +var idProperty = { + configurable: false, + enumerable: true, + /** + * @returns {string} - The big endian hash buffer of the header + */ + get: function() { + if (!this._id) { + this._id = BufferReader(this._getHash()).readReverse().toString('hex'); + } + return this._id; + }, + set: _.noop +}; +Object.defineProperty(BlockHeader.prototype, 'id', idProperty); +Object.defineProperty(BlockHeader.prototype, 'hash', idProperty); -Node.prototype._createEncoderBuffer = function createEncoderBuffer(data) { - return new EncoderBuffer(data, this.reporter); +/** + * @returns {Boolean} - If timestamp is not too far in the future + */ +BlockHeader.prototype.validTimestamp = function validTimestamp() { + var currentTime = Math.round(new Date().getTime() / 1000); + if (this.time > currentTime + BlockHeader.Constants.MAX_TIME_OFFSET) { + return false; + } + return true; }; -Node.prototype._encode = function encode(data, reporter, parent) { - var state = this._baseState; - if (state['default'] !== null && state['default'] === data) - return; +/** + * @returns {Boolean} - If the proof-of-work hash satisfies the target difficulty + */ +BlockHeader.prototype.validProofOfWork = function validProofOfWork() { + var pow = new BN(this.id, 'hex'); + var target = this.getTargetDifficulty(); - var result = this._encodeValue(data, reporter, parent); - if (result === undefined) - return; + if (pow.cmp(target) > 0) { + return false; + } + return true; +}; - if (this._skipDefault(result, reporter, parent)) - return; +/** + * @returns {string} - A string formatted for the console + */ +BlockHeader.prototype.inspect = function inspect() { + return ''; +}; - return result; +BlockHeader.Constants = { + START_OF_HEADER: 8, // Start buffer position in raw block data + MAX_TIME_OFFSET: 2 * 60 * 60, // The max a timestamp can be in the future + LARGEST_HASH: new BN('10000000000000000000000000000000000000000000000000000000000000000', 'hex') }; -Node.prototype._encodeValue = function encode(data, reporter, parent) { - var state = this._baseState; +module.exports = BlockHeader; - // Decode root node - if (state.parent === null) - return state.children[0]._encode(data, reporter || new Reporter()); +}).call(this,require("buffer").Buffer) +},{"../crypto/bn":6,"../crypto/hash":8,"../encoding/bufferreader":14,"../encoding/bufferwriter":15,"../util/buffer":44,"../util/js":45,"../util/preconditions":46,"buffer":100,"lodash":156}],4:[function(require,module,exports){ +module.exports = require('./block'); - var result = null; +module.exports.BlockHeader = require('./blockheader'); +module.exports.MerkleBlock = require('./merkleblock'); - // Set reporter to share it with a child class - this.reporter = reporter; +},{"./block":2,"./blockheader":3,"./merkleblock":5}],5:[function(require,module,exports){ +(function (Buffer){ +'use strict'; - // Check if data is there - if (state.optional && data === undefined) { - if (state['default'] !== null) - data = state['default'] - else - return; - } +var _ = require('lodash'); +var BlockHeader = require('./blockheader'); +var BufferUtil = require('../util/buffer'); +var BufferReader = require('../encoding/bufferreader'); +var BufferWriter = require('../encoding/bufferwriter'); +var Hash = require('../crypto/hash'); +var JSUtil = require('../util/js'); +var Transaction = require('../transaction'); +var errors = require('../errors'); +var $ = require('../util/preconditions'); - // Encode children first - var content = null; - var primitive = false; - if (state.any) { - // Anything that was given is translated to buffer - result = this._createEncoderBuffer(data); - } else if (state.choice) { - result = this._encodeChoice(data, reporter); - } else if (state.contains) { - content = this._getUse(state.contains, parent)._encode(data, reporter); - primitive = true; - } else if (state.children) { - content = state.children.map(function(child) { - if (child._baseState.tag === 'null_') - return child._encode(null, reporter, data); - - if (child._baseState.key === null) - return reporter.error('Child should have a key'); - var prevKey = reporter.enterKey(child._baseState.key); - - if (typeof data !== 'object') - return reporter.error('Child expected, but input is not object'); +/** + * Instantiate a MerkleBlock from a Buffer, JSON object, or Object with + * the properties of the Block + * + * @param {*} - A Buffer, JSON string, or Object representing a MerkleBlock + * @returns {MerkleBlock} + * @constructor + */ +function MerkleBlock(arg) { + /* jshint maxstatements: 18 */ - var res = child._encode(data[child._baseState.key], reporter, data); - reporter.leaveKey(prevKey); + if (!(this instanceof MerkleBlock)) { + return new MerkleBlock(arg); + } - return res; - }, this).filter(function(child) { - return child; - }); - content = this._createEncoderBuffer(content); + var info = {}; + if (BufferUtil.isBuffer(arg)) { + info = MerkleBlock._fromBufferReader(BufferReader(arg)); + } else if (_.isObject(arg)) { + var header; + if(arg.header instanceof BlockHeader) { + header = arg.header; + } else { + header = BlockHeader.fromObject(arg.header); + } + info = { + /** + * @name MerkleBlock#header + * @type {BlockHeader} + */ + header: header, + /** + * @name MerkleBlock#numTransactions + * @type {Number} + */ + numTransactions: arg.numTransactions, + /** + * @name MerkleBlock#hashes + * @type {String[]} + */ + hashes: arg.hashes, + /** + * @name MerkleBlock#flags + * @type {Number[]} + */ + flags: arg.flags + }; } else { - if (state.tag === 'seqof' || state.tag === 'setof') { - // TODO(indutny): this should be thrown on DSL level - if (!(state.args && state.args.length === 1)) - return reporter.error('Too many args for : ' + state.tag); + throw new TypeError('Unrecognized argument for MerkleBlock'); + } + _.extend(this,info); + this._flagBitsUsed = 0; + this._hashesUsed = 0; - if (!Array.isArray(data)) - return reporter.error('seqof/setof, but data is not Array'); + return this; +} - var child = this.clone(); - child._baseState.implicit = null; - content = this._createEncoderBuffer(data.map(function(item) { - var state = this._baseState; +/** + * @param {Buffer} - MerkleBlock data in a Buffer object + * @returns {MerkleBlock} - A MerkleBlock object + */ +MerkleBlock.fromBuffer = function fromBuffer(buf) { + return MerkleBlock.fromBufferReader(BufferReader(buf)); +}; - return this._getUse(state.args[0], data)._encode(item, reporter); - }, child)); - } else if (state.use !== null) { - result = this._getUse(state.use, parent)._encode(data, reporter); - } else { - content = this._encodePrimitive(state.tag, data); - primitive = true; - } - } +/** + * @param {BufferReader} - MerkleBlock data in a BufferReader object + * @returns {MerkleBlock} - A MerkleBlock object + */ +MerkleBlock.fromBufferReader = function fromBufferReader(br) { + return new MerkleBlock(MerkleBlock._fromBufferReader(br)); +}; - // Encode data itself - var result; - if (!state.any && state.choice === null) { - var tag = state.implicit !== null ? state.implicit : state.tag; - var cls = state.implicit === null ? 'universal' : 'context'; +/** + * @returns {Buffer} - A buffer of the block + */ +MerkleBlock.prototype.toBuffer = function toBuffer() { + return this.toBufferWriter().concat(); +}; - if (tag === null) { - if (state.use === null) - reporter.error('Tag could be omitted only for .use()'); - } else { - if (state.use === null) - result = this._encodeComposite(tag, primitive, cls, content); - } +/** + * @param {BufferWriter} - An existing instance of BufferWriter + * @returns {BufferWriter} - An instance of BufferWriter representation of the MerkleBlock + */ +MerkleBlock.prototype.toBufferWriter = function toBufferWriter(bw) { + if (!bw) { + bw = new BufferWriter(); } + bw.write(this.header.toBuffer()); + bw.writeUInt32LE(this.numTransactions); + bw.writeVarintNum(this.hashes.length); + for (var i = 0; i < this.hashes.length; i++) { + bw.write(Buffer.from(this.hashes[i], 'hex')); + } + bw.writeVarintNum(this.flags.length); + for (i = 0; i < this.flags.length; i++) { + bw.writeUInt8(this.flags[i]); + } + return bw; +}; - // Wrap in explicit - if (state.explicit !== null) - result = this._encodeComposite(state.explicit, false, 'context', result); - - return result; +/** + * @returns {Object} - A plain object with the MerkleBlock properties + */ +MerkleBlock.prototype.toObject = MerkleBlock.prototype.toJSON = function toObject() { + return { + header: this.header.toObject(), + numTransactions: this.numTransactions, + hashes: this.hashes, + flags: this.flags + }; }; -Node.prototype._encodeChoice = function encodeChoice(data, reporter) { - var state = this._baseState; +/** + * Verify that the MerkleBlock is valid + * @returns {Boolean} - True/False whether this MerkleBlock is Valid + */ +MerkleBlock.prototype.validMerkleTree = function validMerkleTree() { + $.checkState(_.isArray(this.flags), 'MerkleBlock flags is not an array'); + $.checkState(_.isArray(this.hashes), 'MerkleBlock hashes is not an array'); - var node = state.choice[data.type]; - if (!node) { - assert( - false, - data.type + ' not found in ' + - JSON.stringify(Object.keys(state.choice))); + // Can't have more hashes than numTransactions + if(this.hashes.length > this.numTransactions) { + return false; } - return node._encode(data.value, reporter); -}; -Node.prototype._encodePrimitive = function encodePrimitive(tag, data) { - var state = this._baseState; + // Can't have more flag bits than num hashes + if(this.flags.length * 8 < this.hashes.length) { + return false; + } - if (/str$/.test(tag)) - return this._encodeStr(data, tag); - else if (tag === 'objid' && state.args) - return this._encodeObjid(data, state.reverseArgs[0], state.args[1]); - else if (tag === 'objid') - return this._encodeObjid(data, null, null); - else if (tag === 'gentime' || tag === 'utctime') - return this._encodeTime(data, tag); - else if (tag === 'null_') - return this._encodeNull(); - else if (tag === 'int' || tag === 'enum') - return this._encodeInt(data, state.args && state.reverseArgs[0]); - else if (tag === 'bool') - return this._encodeBool(data); - else if (tag === 'objDesc') - return this._encodeStr(data, tag); - else - throw new Error('Unsupported tag: ' + tag); + var height = this._calcTreeHeight(); + var opts = { hashesUsed: 0, flagBitsUsed: 0 }; + var root = this._traverseMerkleTree(height, 0, opts); + if(opts.hashesUsed !== this.hashes.length) { + return false; + } + return BufferUtil.equals(root, this.header.merkleRoot); }; -Node.prototype._isNumstr = function isNumstr(str) { - return /^[0-9 ]*$/.test(str); -}; +/** + * Return a list of all the txs hash that match the filter + * @returns {Array} - txs hash that match the filter + */ +MerkleBlock.prototype.filterdTxsHash = function filterdTxsHash() { + $.checkState(_.isArray(this.flags), 'MerkleBlock flags is not an array'); + $.checkState(_.isArray(this.hashes), 'MerkleBlock hashes is not an array'); -Node.prototype._isPrintstr = function isPrintstr(str) { - return /^[A-Za-z0-9 '\(\)\+,\-\.\/:=\?]*$/.test(str); -}; + // Can't have more hashes than numTransactions + if(this.hashes.length > this.numTransactions) { + throw new errors.MerkleBlock.InvalidMerkleTree(); + } -},{"../base":4,"minimalistic-assert":109}],6:[function(require,module,exports){ -var inherits = require('inherits'); + // Can't have more flag bits than num hashes + if(this.flags.length * 8 < this.hashes.length) { + throw new errors.MerkleBlock.InvalidMerkleTree(); + } -function Reporter(options) { - this._reporterState = { - obj: null, - path: [], - options: options || {}, - errors: [] + // If there is only one hash the filter do not match any txs in the block + if(this.hashes.length === 1) { + return []; }; -} -exports.Reporter = Reporter; -Reporter.prototype.isError = function isError(obj) { - return obj instanceof ReporterError; + var height = this._calcTreeHeight(); + var opts = { hashesUsed: 0, flagBitsUsed: 0 }; + var txs = this._traverseMerkleTree(height, 0, opts, true); + if(opts.hashesUsed !== this.hashes.length) { + throw new errors.MerkleBlock.InvalidMerkleTree(); + } + return txs; }; -Reporter.prototype.save = function save() { - var state = this._reporterState; - - return { obj: state.obj, pathLen: state.path.length }; -}; +/** + * Traverse a the tree in this MerkleBlock, validating it along the way + * Modeled after Bitcoin Core merkleblock.cpp TraverseAndExtract() + * @param {Number} - depth - Current height + * @param {Number} - pos - Current position in the tree + * @param {Object} - opts - Object with values that need to be mutated throughout the traversal + * @param {Boolean} - checkForTxs - if true return opts.txs else return the Merkle Hash + * @param {Number} - opts.flagBitsUsed - Number of flag bits used, should start at 0 + * @param {Number} - opts.hashesUsed - Number of hashes used, should start at 0 + * @param {Array} - opts.txs - Will finish populated by transactions found during traversal that match the filter + * @returns {Buffer|null} - Buffer containing the Merkle Hash for that height + * @returns {Array} - transactions found during traversal that match the filter + * @private + */ +MerkleBlock.prototype._traverseMerkleTree = function traverseMerkleTree(depth, pos, opts, checkForTxs) { + /* jshint maxcomplexity: 12*/ + /* jshint maxstatements: 20 */ -Reporter.prototype.restore = function restore(data) { - var state = this._reporterState; + opts = opts || {}; + opts.txs = opts.txs || []; + opts.flagBitsUsed = opts.flagBitsUsed || 0; + opts.hashesUsed = opts.hashesUsed || 0; + var checkForTxs = checkForTxs || false; - state.obj = data.obj; - state.path = state.path.slice(0, data.pathLen); + if(opts.flagBitsUsed > this.flags.length * 8) { + return null; + } + var isParentOfMatch = (this.flags[opts.flagBitsUsed >> 3] >>> (opts.flagBitsUsed++ & 7)) & 1; + if(depth === 0 || !isParentOfMatch) { + if(opts.hashesUsed >= this.hashes.length) { + return null; + } + var hash = this.hashes[opts.hashesUsed++]; + if(depth === 0 && isParentOfMatch) { + opts.txs.push(hash); + } + return Buffer.from(hash, 'hex'); + } else { + var left = this._traverseMerkleTree(depth-1, pos*2, opts); + var right = left; + if(pos*2+1 < this._calcTreeWidth(depth-1)) { + right = this._traverseMerkleTree(depth-1, pos*2+1, opts); + } + if (checkForTxs){ + return opts.txs; + } else { + return Hash.sha256sha256(new Buffer.concat([left, right])); + }; + } }; -Reporter.prototype.enterKey = function enterKey(key) { - return this._reporterState.path.push(key); +/** Calculates the width of a merkle tree at a given height. + * Modeled after Bitcoin Core merkleblock.h CalcTreeWidth() + * @param {Number} - Height at which we want the tree width + * @returns {Number} - Width of the tree at a given height + * @private + */ +MerkleBlock.prototype._calcTreeWidth = function calcTreeWidth(height) { + return (this.numTransactions + (1 << height) - 1) >> height; }; -Reporter.prototype.exitKey = function exitKey(index) { - var state = this._reporterState; - - state.path = state.path.slice(0, index - 1); +/** Calculates the height of the merkle tree in this MerkleBlock + * @param {Number} - Height at which we want the tree width + * @returns {Number} - Height of the merkle tree in this MerkleBlock + * @private + */ +MerkleBlock.prototype._calcTreeHeight = function calcTreeHeight() { + var height = 0; + while (this._calcTreeWidth(height) > 1) { + height++; + } + return height; }; -Reporter.prototype.leaveKey = function leaveKey(index, key, value) { - var state = this._reporterState; +/** + * @param {Transaction|String} - Transaction or Transaction ID Hash + * @returns {Boolean} - return true/false if this MerkleBlock has the TX or not + * @private + */ +MerkleBlock.prototype.hasTransaction = function hasTransaction(tx) { + $.checkArgument(!_.isUndefined(tx), 'tx cannot be undefined'); + $.checkArgument(tx instanceof Transaction || typeof tx === 'string', + 'Invalid tx given, tx must be a "string" or "Transaction"'); - this.exitKey(index); - if (state.obj !== null) - state.obj[key] = value; -}; + var hash = tx; + if(tx instanceof Transaction) { + // We need to reverse the id hash for the lookup + hash = BufferUtil.reverse(Buffer.from(tx.id, 'hex')).toString('hex'); + } -Reporter.prototype.path = function path() { - return this._reporterState.path.join('/'); + var txs = []; + var height = this._calcTreeHeight(); + this._traverseMerkleTree(height, 0, { txs: txs }); + return txs.indexOf(hash) !== -1; }; -Reporter.prototype.enterObject = function enterObject() { - var state = this._reporterState; +/** + * @param {Buffer} - MerkleBlock data + * @returns {Object} - An Object representing merkleblock data + * @private + */ +MerkleBlock._fromBufferReader = function _fromBufferReader(br) { + $.checkState(!br.finished(), 'No merkleblock data received'); + var info = {}; + info.header = BlockHeader.fromBufferReader(br); + info.numTransactions = br.readUInt32LE(); + var numHashes = br.readVarintNum(); + info.hashes = []; + for (var i = 0; i < numHashes; i++) { + info.hashes.push(br.read(32).toString('hex')); + } + var numFlags = br.readVarintNum(); + info.flags = []; + for (i = 0; i < numFlags; i++) { + info.flags.push(br.readUInt8()); + } + return info; +}; - var prev = state.obj; - state.obj = {}; - return prev; +/** + * @param {Object} - A plain JavaScript object + * @returns {Block} - An instance of block + */ +MerkleBlock.fromObject = function fromObject(obj) { + return new MerkleBlock(obj); }; -Reporter.prototype.leaveObject = function leaveObject(prev) { - var state = this._reporterState; +module.exports = MerkleBlock; - var now = state.obj; - state.obj = prev; - return now; -}; +}).call(this,require("buffer").Buffer) +},{"../crypto/hash":8,"../encoding/bufferreader":14,"../encoding/bufferwriter":15,"../errors":17,"../transaction":29,"../util/buffer":44,"../util/js":45,"../util/preconditions":46,"./blockheader":3,"buffer":100,"lodash":156}],6:[function(require,module,exports){ +(function (Buffer){ +'use strict'; -Reporter.prototype.error = function error(msg) { - var err; - var state = this._reporterState; +var BN = require('bn.js'); +var $ = require('../util/preconditions'); +var _ = require('lodash'); - var inherited = msg instanceof ReporterError; - if (inherited) { - err = msg; - } else { - err = new ReporterError(state.path.map(function(elem) { - return '[' + JSON.stringify(elem) + ']'; - }).join(''), msg.message || msg, msg.stack); +var reversebuf = function(buf) { + var buf2 = Buffer.alloc(buf.length); + for (var i = 0; i < buf.length; i++) { + buf2[i] = buf[buf.length - 1 - i]; } + return buf2; +}; - if (!state.options.partial) - throw err; - - if (!inherited) - state.errors.push(err); +BN.Zero = new BN(0); +BN.One = new BN(1); +BN.Minus1 = new BN(-1); - return err; +BN.fromNumber = function(n) { + $.checkArgument(_.isNumber(n)); + return new BN(n); }; -Reporter.prototype.wrapResult = function wrapResult(result) { - var state = this._reporterState; - if (!state.options.partial) - return result; - - return { - result: this.isError(result) ? null : result, - errors: state.errors - }; +BN.fromString = function(str, base) { + $.checkArgument(_.isString(str)); + return new BN(str, base); }; -function ReporterError(path, msg) { - this.path = path; - this.rethrow(msg); +BN.fromBuffer = function(buf, opts) { + if (typeof opts !== 'undefined' && opts.endian === 'little') { + buf = reversebuf(buf); + } + var hex = buf.toString('hex'); + var bn = new BN(hex, 16); + return bn; }; -inherits(ReporterError, Error); -ReporterError.prototype.rethrow = function rethrow(msg) { - this.message = msg + ' at: ' + (this.path || '(shallow)'); - if (Error.captureStackTrace) - Error.captureStackTrace(this, ReporterError); +/** + * Instantiate a BigNumber from a "signed magnitude buffer" + * (a buffer where the most significant bit represents the sign (0 = positive, -1 = negative)) + */ +BN.fromSM = function(buf, opts) { + var ret; + if (buf.length === 0) { + return BN.fromBuffer(Buffer.from([0])); + } - if (!this.stack) { - try { - // IE only adds stack when thrown - throw new Error(this.message); - } catch (e) { - this.stack = e.stack; - } + var endian = 'big'; + if (opts) { + endian = opts.endian; } - return this; + if (endian === 'little') { + buf = reversebuf(buf); + } + + if (buf[0] & 0x80) { + buf[0] = buf[0] & 0x7f; + ret = BN.fromBuffer(buf); + ret.neg().copy(ret); + } else { + ret = BN.fromBuffer(buf); + } + return ret; }; -},{"inherits":104}],7:[function(require,module,exports){ -var constants = require('../constants'); -exports.tagClass = { - 0: 'universal', - 1: 'application', - 2: 'context', - 3: 'private' +BN.prototype.toNumber = function() { + return parseInt(this.toString(10), 10); }; -exports.tagClassByName = constants._reverse(exports.tagClass); -exports.tag = { - 0x00: 'end', - 0x01: 'bool', - 0x02: 'int', - 0x03: 'bitstr', - 0x04: 'octstr', - 0x05: 'null_', - 0x06: 'objid', - 0x07: 'objDesc', - 0x08: 'external', - 0x09: 'real', - 0x0a: 'enum', - 0x0b: 'embed', - 0x0c: 'utf8str', - 0x0d: 'relativeOid', - 0x10: 'seq', - 0x11: 'set', - 0x12: 'numstr', - 0x13: 'printstr', - 0x14: 't61str', - 0x15: 'videostr', - 0x16: 'ia5str', - 0x17: 'utctime', - 0x18: 'gentime', - 0x19: 'graphstr', - 0x1a: 'iso646str', - 0x1b: 'genstr', - 0x1c: 'unistr', - 0x1d: 'charstr', - 0x1e: 'bmpstr' -}; -exports.tagByName = constants._reverse(exports.tag); - -},{"../constants":8}],8:[function(require,module,exports){ -var constants = exports; - -// Helper -constants._reverse = function reverse(map) { - var res = {}; +BN.prototype.toBuffer = function(opts) { + var buf, hex; + if (opts && opts.size) { + hex = this.toString(16, 2); + var natlen = hex.length / 2; + buf = Buffer.from(hex, 'hex'); - Object.keys(map).forEach(function(key) { - // Convert key to integer if it is stringified - if ((key | 0) == key) - key = key | 0; + if (natlen === opts.size) { + buf = buf; + } else if (natlen > opts.size) { + buf = BN.trim(buf, natlen); + } else if (natlen < opts.size) { + buf = BN.pad(buf, natlen, opts.size); + } + } else { + hex = this.toString(16, 2); + buf = Buffer.from(hex, 'hex'); + } - var value = map[key]; - res[value] = key; - }); + if (typeof opts !== 'undefined' && opts.endian === 'little') { + buf = reversebuf(buf); + } - return res; + return buf; }; -constants.der = require('./der'); - -},{"./der":7}],9:[function(require,module,exports){ -var inherits = require('inherits'); - -var asn1 = require('../../asn1'); -var base = asn1.base; -var bignum = asn1.bignum; +BN.prototype.toSMBigEndian = function() { + var buf; + if (this.cmp(BN.Zero) === -1) { + buf = this.neg().toBuffer(); + if (buf[0] & 0x80) { + buf = Buffer.concat([Buffer.from([0x80]), buf]); + } else { + buf[0] = buf[0] | 0x80; + } + } else { + buf = this.toBuffer(); + if (buf[0] & 0x80) { + buf = Buffer.concat([Buffer.from([0x00]), buf]); + } + } -// Import DER constants -var der = asn1.constants.der; + if (buf.length === 1 & buf[0] === 0) { + buf = Buffer.from([]); + } + return buf; +}; -function DERDecoder(entity) { - this.enc = 'der'; - this.name = entity.name; - this.entity = entity; +BN.prototype.toSM = function(opts) { + var endian = opts ? opts.endian : 'big'; + var buf = this.toSMBigEndian(); - // Construct base tree - this.tree = new DERNode(); - this.tree._init(entity.body); + if (endian === 'little') { + buf = reversebuf(buf); + } + return buf; }; -module.exports = DERDecoder; -DERDecoder.prototype.decode = function decode(data, options) { - if (!(data instanceof base.DecoderBuffer)) - data = new base.DecoderBuffer(data, options); +/** + * Create a BN from a "ScriptNum": + * This is analogous to the constructor for CScriptNum in bitcoind. Many ops in + * bitcoind's script interpreter use CScriptNum, which is not really a proper + * bignum. Instead, an error is thrown if trying to input a number bigger than + * 4 bytes. We copy that behavior here. A third argument, `size`, is provided to + * extend the hard limit of 4 bytes, as some usages require more than 4 bytes. + */ +BN.fromScriptNumBuffer = function(buf, fRequireMinimal, size) { + var nMaxNumSize = size || 4; + $.checkArgument(buf.length <= nMaxNumSize, new Error('script number overflow')); + if (fRequireMinimal && buf.length > 0) { + // Check that the number is encoded with the minimum possible + // number of bytes. + // + // If the most-significant-byte - excluding the sign bit - is zero + // then we're not minimal. Note how this test also rejects the + // negative-zero encoding, 0x80. + if ((buf[buf.length - 1] & 0x7f) === 0) { + // One exception: if there's more than one byte and the most + // significant bit of the second-most-significant-byte is set + // it would conflict with the sign bit. An example of this case + // is +-255, which encode to 0xff00 and 0xff80 respectively. + // (big-endian). + if (buf.length <= 1 || (buf[buf.length - 2] & 0x80) === 0) { + throw new Error('non-minimally encoded script number'); + } + } + } + return BN.fromSM(buf, { + endian: 'little' + }); +}; - return this.tree._decode(data, options); +/** + * The corollary to the above, with the notable exception that we do not throw + * an error if the output is larger than four bytes. (Which can happen if + * performing a numerical operation that results in an overflow to more than 4 + * bytes). + */ +BN.prototype.toScriptNumBuffer = function() { + return this.toSM({ + endian: 'little' + }); }; -// Tree methods +BN.trim = function(buf, natlen) { + return buf.slice(natlen - buf.length, buf.length); +}; -function DERNode(parent) { - base.Node.call(this, 'der', parent); -} -inherits(DERNode, base.Node); +BN.pad = function(buf, natlen, size) { + var rbuf = Buffer.alloc(size); + for (var i = 0; i < buf.length; i++) { + rbuf[rbuf.length - 1 - i] = buf[buf.length - 1 - i]; + } + for (i = 0; i < size - natlen; i++) { + rbuf[i] = 0; + } + return rbuf; +}; -DERNode.prototype._peekTag = function peekTag(buffer, tag, any) { - if (buffer.isEmpty()) - return false; +module.exports = BN; - var state = buffer.save(); - var decodedTag = derDecodeTag(buffer, 'Failed to peek tag: "' + tag + '"'); - if (buffer.isError(decodedTag)) - return decodedTag; +}).call(this,require("buffer").Buffer) +},{"../util/preconditions":46,"bn.js":66,"buffer":100,"lodash":156}],7:[function(require,module,exports){ +(function (Buffer){ +'use strict'; - buffer.restore(state); +var BN = require('./bn'); +var Point = require('./point'); +var Signature = require('./signature'); +var PublicKey = require('../publickey'); +var Random = require('./random'); +var Hash = require('./hash'); +var BufferUtil = require('../util/buffer'); +var _ = require('lodash'); +var $ = require('../util/preconditions'); - return decodedTag.tag === tag || decodedTag.tagStr === tag || - (decodedTag.tagStr + 'of') === tag || any; +var ECDSA = function ECDSA(obj) { + if (!(this instanceof ECDSA)) { + return new ECDSA(obj); + } + if (obj) { + this.set(obj); + } }; -DERNode.prototype._decodeTag = function decodeTag(buffer, tag, any) { - var decodedTag = derDecodeTag(buffer, - 'Failed to decode tag of "' + tag + '"'); - if (buffer.isError(decodedTag)) - return decodedTag; +/* jshint maxcomplexity: 9 */ +ECDSA.prototype.set = function(obj) { + this.hashbuf = obj.hashbuf || this.hashbuf; + this.endian = obj.endian || this.endian; //the endianness of hashbuf + this.privkey = obj.privkey || this.privkey; + this.pubkey = obj.pubkey || (this.privkey ? this.privkey.publicKey : this.pubkey); + this.sig = obj.sig || this.sig; + this.k = obj.k || this.k; + this.verified = obj.verified || this.verified; + return this; +}; - var len = derDecodeLen(buffer, - decodedTag.primitive, - 'Failed to get length of "' + tag + '"'); +ECDSA.prototype.privkey2pubkey = function() { + this.pubkey = this.privkey.toPublicKey(); +}; - // Failure - if (buffer.isError(len)) - return len; +ECDSA.prototype.calci = function() { + for (var i = 0; i < 4; i++) { + this.sig.i = i; + var Qprime; + try { + Qprime = this.toPublicKey(); + } catch (e) { + console.error(e); + continue; + } - if (!any && - decodedTag.tag !== tag && - decodedTag.tagStr !== tag && - decodedTag.tagStr + 'of' !== tag) { - return buffer.error('Failed to match tag: "' + tag + '"'); + if (Qprime.point.eq(this.pubkey.point)) { + this.sig.compressed = this.pubkey.compressed; + return this; + } } - if (decodedTag.primitive || len !== null) - return buffer.skip(len, 'Failed to match body of: "' + tag + '"'); - - // Indefinite length... find END tag - var state = buffer.save(); - var res = this._skipUntilEnd( - buffer, - 'Failed to skip indefinite length body: "' + this.tag + '"'); - if (buffer.isError(res)) - return res; - - len = buffer.offset - state.offset; - buffer.restore(state); - return buffer.skip(len, 'Failed to match body of: "' + tag + '"'); + this.sig.i = undefined; + throw new Error('Unable to find valid recovery factor'); }; -DERNode.prototype._skipUntilEnd = function skipUntilEnd(buffer, fail) { - while (true) { - var tag = derDecodeTag(buffer, fail); - if (buffer.isError(tag)) - return tag; - var len = derDecodeLen(buffer, tag.primitive, fail); - if (buffer.isError(len)) - return len; +ECDSA.fromString = function(str) { + var obj = JSON.parse(str); + return new ECDSA(obj); +}; - var res; - if (tag.primitive || len !== null) - res = buffer.skip(len) - else - res = this._skipUntilEnd(buffer, fail); +ECDSA.prototype.randomK = function() { + var N = Point.getN(); + var k; + do { + k = BN.fromBuffer(Random.getRandomBuffer(32)); + } while (!(k.lt(N) && k.gt(BN.Zero))); + this.k = k; + return this; +}; - // Failure - if (buffer.isError(res)) - return res; - if (tag.tagStr === 'end') - break; +// https://tools.ietf.org/html/rfc6979#section-3.2 +ECDSA.prototype.deterministicK = function(badrs) { + /* jshint maxstatements: 25 */ + // if r or s were invalid when this function was used in signing, + // we do not want to actually compute r, s here for efficiency, so, + // we can increment badrs. explained at end of RFC 6979 section 3.2 + if (_.isUndefined(badrs)) { + badrs = 0; } -}; - -DERNode.prototype._decodeList = function decodeList(buffer, tag, decoder, - options) { - var result = []; - while (!buffer.isEmpty()) { - var possibleEnd = this._peekTag(buffer, 'end'); - if (buffer.isError(possibleEnd)) - return possibleEnd; + var v = Buffer.alloc(32); + v.fill(0x01); + var k = Buffer.alloc(32); + k.fill(0x00); + var x = this.privkey.bn.toBuffer({ + size: 32 + }); + var hashbuf = this.endian === 'little' ? BufferUtil.reverse(this.hashbuf) : this.hashbuf + k = Hash.sha256hmac(Buffer.concat([v, Buffer.from([0x00]), x, hashbuf]), k); + v = Hash.sha256hmac(v, k); + k = Hash.sha256hmac(Buffer.concat([v, Buffer.from([0x01]), x, hashbuf]), k); + v = Hash.sha256hmac(v, k); + v = Hash.sha256hmac(v, k); + var T = BN.fromBuffer(v); + var N = Point.getN(); - var res = decoder.decode(buffer, 'der', options); - if (buffer.isError(res) && possibleEnd) - break; - result.push(res); + // also explained in 3.2, we must ensure T is in the proper range (0, N) + for (var i = 0; i < badrs || !(T.lt(N) && T.gt(BN.Zero)); i++) { + k = Hash.sha256hmac(Buffer.concat([v, Buffer.from([0x00])]), k); + v = Hash.sha256hmac(v, k); + v = Hash.sha256hmac(v, k); + T = BN.fromBuffer(v); } - return result; + + this.k = T; + return this; }; -DERNode.prototype._decodeStr = function decodeStr(buffer, tag) { - if (tag === 'bitstr') { - var unused = buffer.readUInt8(); - if (buffer.isError(unused)) - return unused; - return { unused: unused, data: buffer.raw() }; - } else if (tag === 'bmpstr') { - var raw = buffer.raw(); - if (raw.length % 2 === 1) - return buffer.error('Decoding of string type: bmpstr length mismatch'); +// Information about public key recovery: +// https://bitcointalk.org/index.php?topic=6430.0 +// http://stackoverflow.com/questions/19665491/how-do-i-get-an-ecdsa-public-key-from-just-a-bitcoin-signature-sec1-4-1-6-k +ECDSA.prototype.toPublicKey = function() { + /* jshint maxstatements: 25 */ + var i = this.sig.i; + $.checkArgument(i === 0 || i === 1 || i === 2 || i === 3, new Error('i must be equal to 0, 1, 2, or 3')); - var str = ''; - for (var i = 0; i < raw.length / 2; i++) { - str += String.fromCharCode(raw.readUInt16BE(i * 2)); - } - return str; - } else if (tag === 'numstr') { - var numstr = buffer.raw().toString('ascii'); - if (!this._isNumstr(numstr)) { - return buffer.error('Decoding of string type: ' + - 'numstr unsupported characters'); - } - return numstr; - } else if (tag === 'octstr') { - return buffer.raw(); - } else if (tag === 'objDesc') { - return buffer.raw(); - } else if (tag === 'printstr') { - var printstr = buffer.raw().toString('ascii'); - if (!this._isPrintstr(printstr)) { - return buffer.error('Decoding of string type: ' + - 'printstr unsupported characters'); - } - return printstr; - } else if (/str$/.test(tag)) { - return buffer.raw().toString(); - } else { - return buffer.error('Decoding of string type: ' + tag + ' unsupported'); - } -}; + var e = BN.fromBuffer(this.hashbuf); + var r = this.sig.r; + var s = this.sig.s; -DERNode.prototype._decodeObjid = function decodeObjid(buffer, values, relative) { - var result; - var identifiers = []; - var ident = 0; - while (!buffer.isEmpty()) { - var subident = buffer.readUInt8(); - ident <<= 7; - ident |= subident & 0x7f; - if ((subident & 0x80) === 0) { - identifiers.push(ident); - ident = 0; - } - } - if (subident & 0x80) - identifiers.push(ident); + // A set LSB signifies that the y-coordinate is odd + var isYOdd = i & 1; - var first = (identifiers[0] / 40) | 0; - var second = identifiers[0] % 40; + // The more significant bit specifies whether we should use the + // first or second candidate key. + var isSecondKey = i >> 1; - if (relative) - result = identifiers; - else - result = [first, second].concat(identifiers.slice(1)); + var n = Point.getN(); + var G = Point.getG(); - if (values) { - var tmp = values[result.join(' ')]; - if (tmp === undefined) - tmp = values[result.join('.')]; - if (tmp !== undefined) - result = tmp; - } + // 1.1 Let x = r + jn + var x = isSecondKey ? r.add(n) : r; + var R = Point.fromX(isYOdd, x); - return result; -}; + // 1.4 Check that nR is at infinity + var nR = R.mul(n); -DERNode.prototype._decodeTime = function decodeTime(buffer, tag) { - var str = buffer.raw().toString(); - if (tag === 'gentime') { - var year = str.slice(0, 4) | 0; - var mon = str.slice(4, 6) | 0; - var day = str.slice(6, 8) | 0; - var hour = str.slice(8, 10) | 0; - var min = str.slice(10, 12) | 0; - var sec = str.slice(12, 14) | 0; - } else if (tag === 'utctime') { - var year = str.slice(0, 2) | 0; - var mon = str.slice(2, 4) | 0; - var day = str.slice(4, 6) | 0; - var hour = str.slice(6, 8) | 0; - var min = str.slice(8, 10) | 0; - var sec = str.slice(10, 12) | 0; - if (year < 70) - year = 2000 + year; - else - year = 1900 + year; - } else { - return buffer.error('Decoding ' + tag + ' time is not supported yet'); + if (!nR.isInfinity()) { + throw new Error('nR is not a valid curve point'); } - return Date.UTC(year, mon - 1, day, hour, min, sec, 0); -}; - -DERNode.prototype._decodeNull = function decodeNull(buffer) { - return null; -}; + // Compute -e from e + var eNeg = e.neg().umod(n); -DERNode.prototype._decodeBool = function decodeBool(buffer) { - var res = buffer.readUInt8(); - if (buffer.isError(res)) - return res; - else - return res !== 0; -}; + // 1.6.1 Compute Q = r^-1 (sR - eG) + // Q = r^-1 (sR + -eG) + var rInv = r.invm(n); -DERNode.prototype._decodeInt = function decodeInt(buffer, values) { - // Bigint, return as it is (assume big endian) - var raw = buffer.raw(); - var res = new bignum(raw); + //var Q = R.multiplyTwo(s, G, eNeg).mul(rInv); + var Q = R.mul(s).add(G.mul(eNeg)).mul(rInv); - if (values) - res = values[res.toString(10)] || res; + var pubkey = PublicKey.fromPoint(Q, this.sig.compressed); - return res; + return pubkey; }; -DERNode.prototype._use = function use(entity, obj) { - if (typeof entity === 'function') - entity = entity(obj); - return entity._getDecoder('der').tree; -}; +ECDSA.prototype.sigError = function() { + /* jshint maxstatements: 25 */ + if (!BufferUtil.isBuffer(this.hashbuf) || this.hashbuf.length !== 32) { + return 'hashbuf must be a 32 byte buffer'; + } -// Utility methods + var r = this.sig.r; + var s = this.sig.s; + if (!(r.gt(BN.Zero) && r.lt(Point.getN())) || !(s.gt(BN.Zero) && s.lt(Point.getN()))) { + return 'r and s not in range'; + } -function derDecodeTag(buf, fail) { - var tag = buf.readUInt8(fail); - if (buf.isError(tag)) - return tag; + var e = BN.fromBuffer(this.hashbuf, this.endian ? { + endian: this.endian + } : undefined); + var n = Point.getN(); + var sinv = s.invm(n); + var u1 = sinv.mul(e).umod(n); + var u2 = sinv.mul(r).umod(n); - var cls = der.tagClass[tag >> 6]; - var primitive = (tag & 0x20) === 0; + var p = Point.getG().mulAdd(u1, this.pubkey.point, u2); + if (p.isInfinity()) { + return 'p is infinity'; + } - // Multi-octet tag - load - if ((tag & 0x1f) === 0x1f) { - var oct = tag; - tag = 0; - while ((oct & 0x80) === 0x80) { - oct = buf.readUInt8(fail); - if (buf.isError(oct)) - return oct; - - tag <<= 7; - tag |= oct & 0x7f; - } + if (p.getX().umod(n).cmp(r) !== 0) { + return 'Invalid signature'; } else { - tag &= 0x1f; + return false; } - var tagStr = der.tag[tag]; +}; + +ECDSA.toLowS = function(s) { + //enforce low s + //see BIP 62, "low S values in signatures" + if (s.gt(BN.fromBuffer(Buffer.from('7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0', 'hex')))) { + s = Point.getN().sub(s); + } + return s; +}; + +ECDSA.prototype._findSignature = function(d, e) { + var N = Point.getN(); + var G = Point.getG(); + // try different values of k until r, s are valid + var badrs = 0; + var k, Q, r, s; + do { + if (!this.k || badrs > 0) { + this.deterministicK(badrs); + } + badrs++; + k = this.k; + Q = G.mul(k); + r = Q.x.umod(N); + s = k.invm(N).mul(e.add(d.mul(r))).umod(N); + } while (r.cmp(BN.Zero) <= 0 || s.cmp(BN.Zero) <= 0); + s = ECDSA.toLowS(s); return { - cls: cls, - primitive: primitive, - tag: tag, - tagStr: tagStr + s: s, + r: r }; -} -function derDecodeLen(buf, primitive, fail) { - var len = buf.readUInt8(fail); - if (buf.isError(len)) - return len; +}; - // Indefinite form - if (!primitive && len === 0x80) - return null; +ECDSA.prototype.sign = function() { + var hashbuf = this.hashbuf; + var privkey = this.privkey; + var d = privkey.bn; - // Definite form - if ((len & 0x80) === 0) { - // Short form - return len; - } + $.checkState(hashbuf && privkey && d, new Error('invalid parameters')); + $.checkState(BufferUtil.isBuffer(hashbuf) && hashbuf.length === 32, new Error('hashbuf must be a 32 byte buffer')); - // Long form - var num = len & 0x7f; - if (num > 4) - return buf.error('length octect is too long'); + var e = BN.fromBuffer(hashbuf, this.endian ? { + endian: this.endian + } : undefined); - len = 0; - for (var i = 0; i < num; i++) { - len <<= 8; - var j = buf.readUInt8(fail); - if (buf.isError(j)) - return j; - len |= j; - } + var obj = this._findSignature(d, e); + obj.compressed = this.pubkey.compressed; - return len; -} + this.sig = new Signature(obj); + return this; +}; -},{"../../asn1":1,"inherits":104}],10:[function(require,module,exports){ -var decoders = exports; +ECDSA.prototype.signRandomK = function() { + this.randomK(); + return this.sign(); +}; -decoders.der = require('./der'); -decoders.pem = require('./pem'); +ECDSA.prototype.toString = function() { + var obj = {}; + if (this.hashbuf) { + obj.hashbuf = this.hashbuf.toString('hex'); + } + if (this.privkey) { + obj.privkey = this.privkey.toString(); + } + if (this.pubkey) { + obj.pubkey = this.pubkey.toString(); + } + if (this.sig) { + obj.sig = this.sig.toString(); + } + if (this.k) { + obj.k = this.k.toString(); + } + return JSON.stringify(obj); +}; -},{"./der":9,"./pem":11}],11:[function(require,module,exports){ -var inherits = require('inherits'); -var Buffer = require('buffer').Buffer; +ECDSA.prototype.verify = function() { + if (!this.sigError()) { + this.verified = true; + } else { + this.verified = false; + } + return this; +}; -var DERDecoder = require('./der'); +ECDSA.sign = function(hashbuf, privkey, endian) { + return ECDSA().set({ + hashbuf: hashbuf, + endian: endian, + privkey: privkey + }).sign().sig; +}; -function PEMDecoder(entity) { - DERDecoder.call(this, entity); - this.enc = 'pem'; +ECDSA.verify = function(hashbuf, sig, pubkey, endian) { + return ECDSA().set({ + hashbuf: hashbuf, + endian: endian, + sig: sig, + pubkey: pubkey + }).verify().verified; }; -inherits(PEMDecoder, DERDecoder); -module.exports = PEMDecoder; -PEMDecoder.prototype.decode = function decode(data, options) { - var lines = data.toString().split(/[\r\n]+/g); +module.exports = ECDSA; - var label = options.label.toUpperCase(); +}).call(this,require("buffer").Buffer) +},{"../publickey":25,"../util/buffer":44,"../util/preconditions":46,"./bn":6,"./hash":8,"./point":9,"./random":10,"./signature":11,"buffer":100,"lodash":156}],8:[function(require,module,exports){ +(function (Buffer){ +'use strict'; - var re = /^-----(BEGIN|END) ([^-]+)-----$/; - var start = -1; - var end = -1; - for (var i = 0; i < lines.length; i++) { - var match = lines[i].match(re); - if (match === null) - continue; +var crypto = require('crypto'); +var BufferUtil = require('../util/buffer'); +var $ = require('../util/preconditions'); - if (match[2] !== label) - continue; +var Hash = module.exports; - if (start === -1) { - if (match[1] !== 'BEGIN') - break; - start = i; - } else { - if (match[1] !== 'END') - break; - end = i; - break; - } - } - if (start === -1 || end === -1) - throw new Error('PEM section not found for: ' + label); +Hash.sha1 = function(buf) { + $.checkArgument(BufferUtil.isBuffer(buf)); + return crypto.createHash('sha1').update(buf).digest(); +}; - var base64 = lines.slice(start + 1, end).join(''); - // Remove excessive symbols - base64.replace(/[^a-z0-9\+\/=]+/gi, ''); +Hash.sha1.blocksize = 512; - var input = new Buffer(base64, 'base64'); - return DERDecoder.prototype.decode.call(this, input, options); +Hash.sha256 = function(buf) { + $.checkArgument(BufferUtil.isBuffer(buf)); + return crypto.createHash('sha256').update(buf).digest(); }; -},{"./der":9,"buffer":52,"inherits":104}],12:[function(require,module,exports){ -var inherits = require('inherits'); -var Buffer = require('buffer').Buffer; - -var asn1 = require('../../asn1'); -var base = asn1.base; +Hash.sha256.blocksize = 512; -// Import DER constants -var der = asn1.constants.der; +Hash.sha256sha256 = function(buf) { + $.checkArgument(BufferUtil.isBuffer(buf)); + return Hash.sha256(Hash.sha256(buf)); +}; -function DEREncoder(entity) { - this.enc = 'der'; - this.name = entity.name; - this.entity = entity; +Hash.ripemd160 = function(buf) { + $.checkArgument(BufferUtil.isBuffer(buf)); + return crypto.createHash('ripemd160').update(buf).digest(); +}; - // Construct base tree - this.tree = new DERNode(); - this.tree._init(entity.body); +Hash.sha256ripemd160 = function(buf) { + $.checkArgument(BufferUtil.isBuffer(buf)); + return Hash.ripemd160(Hash.sha256(buf)); }; -module.exports = DEREncoder; -DEREncoder.prototype.encode = function encode(data, reporter) { - return this.tree._encode(data, reporter).join(); +Hash.sha512 = function(buf) { + $.checkArgument(BufferUtil.isBuffer(buf)); + return crypto.createHash('sha512').update(buf).digest(); }; -// Tree methods +Hash.sha512.blocksize = 1024; -function DERNode(parent) { - base.Node.call(this, 'der', parent); -} -inherits(DERNode, base.Node); +Hash.hmac = function(hashf, data, key) { + //http://en.wikipedia.org/wiki/Hash-based_message_authentication_code + //http://tools.ietf.org/html/rfc4868#section-2 + $.checkArgument(BufferUtil.isBuffer(data)); + $.checkArgument(BufferUtil.isBuffer(key)); + $.checkArgument(hashf.blocksize); -DERNode.prototype._encodeComposite = function encodeComposite(tag, - primitive, - cls, - content) { - var encodedTag = encodeTag(tag, primitive, cls, this.reporter); + var blocksize = hashf.blocksize / 8; - // Short form - if (content.length < 0x80) { - var header = new Buffer(2); - header[0] = encodedTag; - header[1] = content.length; - return this._createEncoderBuffer([ header, content ]); + if (key.length > blocksize) { + key = hashf(key); + } else if (key < blocksize) { + var fill = Buffer.alloc(blocksize); + fill.fill(0); + key.copy(fill); + key = fill; } - // Long form - // Count octets required to store length - var lenOctets = 1; - for (var i = content.length; i >= 0x100; i >>= 8) - lenOctets++; + var o_key = Buffer.alloc(blocksize); + o_key.fill(0x5c); - var header = new Buffer(1 + 1 + lenOctets); - header[0] = encodedTag; - header[1] = 0x80 | lenOctets; + var i_key = Buffer.alloc(blocksize); + i_key.fill(0x36); - for (var i = 1 + lenOctets, j = content.length; j > 0; i--, j >>= 8) - header[i] = j & 0xff; + var o_key_pad = Buffer.alloc(blocksize); + var i_key_pad = Buffer.alloc(blocksize); + for (var i = 0; i < blocksize; i++) { + o_key_pad[i] = o_key[i] ^ key[i]; + i_key_pad[i] = i_key[i] ^ key[i]; + } - return this._createEncoderBuffer([ header, content ]); + return hashf(Buffer.concat([o_key_pad, hashf(Buffer.concat([i_key_pad, data]))])); }; -DERNode.prototype._encodeStr = function encodeStr(str, tag) { - if (tag === 'bitstr') { - return this._createEncoderBuffer([ str.unused | 0, str.data ]); - } else if (tag === 'bmpstr') { - var buf = new Buffer(str.length * 2); - for (var i = 0; i < str.length; i++) { - buf.writeUInt16BE(str.charCodeAt(i), i * 2); - } - return this._createEncoderBuffer(buf); - } else if (tag === 'numstr') { - if (!this._isNumstr(str)) { - return this.reporter.error('Encoding of string type: numstr supports ' + - 'only digits and space'); - } - return this._createEncoderBuffer(str); - } else if (tag === 'printstr') { - if (!this._isPrintstr(str)) { - return this.reporter.error('Encoding of string type: printstr supports ' + - 'only latin upper and lower case letters, ' + - 'digits, space, apostrophe, left and rigth ' + - 'parenthesis, plus sign, comma, hyphen, ' + - 'dot, slash, colon, equal sign, ' + - 'question mark'); - } - return this._createEncoderBuffer(str); - } else if (/str$/.test(tag)) { - return this._createEncoderBuffer(str); - } else if (tag === 'objDesc') { - return this._createEncoderBuffer(str); - } else { - return this.reporter.error('Encoding of string type: ' + tag + - ' unsupported'); - } +Hash.sha256hmac = function(data, key) { + return Hash.hmac(Hash.sha256, data, key); }; -DERNode.prototype._encodeObjid = function encodeObjid(id, values, relative) { - if (typeof id === 'string') { - if (!values) - return this.reporter.error('string objid given, but no values map found'); - if (!values.hasOwnProperty(id)) - return this.reporter.error('objid not found in values map'); - id = values[id].split(/[\s\.]+/g); - for (var i = 0; i < id.length; i++) - id[i] |= 0; - } else if (Array.isArray(id)) { - id = id.slice(); - for (var i = 0; i < id.length; i++) - id[i] |= 0; - } +Hash.sha512hmac = function(data, key) { + return Hash.hmac(Hash.sha512, data, key); +}; - if (!Array.isArray(id)) { - return this.reporter.error('objid() should be either array or string, ' + - 'got: ' + JSON.stringify(id)); - } +}).call(this,require("buffer").Buffer) +},{"../util/buffer":44,"../util/preconditions":46,"buffer":100,"crypto":108}],9:[function(require,module,exports){ +(function (Buffer){ +'use strict'; - if (!relative) { - if (id[1] >= 40) - return this.reporter.error('Second objid identifier OOB'); - id.splice(0, 2, id[0] * 40 + id[1]); - } +var BN = require('./bn'); +var BufferUtil = require('../util/buffer'); - // Count number of octets - var size = 0; - for (var i = 0; i < id.length; i++) { - var ident = id[i]; - for (size++; ident >= 0x80; ident >>= 7) - size++; - } +var EC = require('elliptic').ec; +var ec = new EC('secp256k1'); +var ecPoint = ec.curve.point.bind(ec.curve); +var ecPointFromX = ec.curve.pointFromX.bind(ec.curve); - var objid = new Buffer(size); - var offset = objid.length - 1; - for (var i = id.length - 1; i >= 0; i--) { - var ident = id[i]; - objid[offset--] = ident & 0x7f; - while ((ident >>= 7) > 0) - objid[offset--] = 0x80 | (ident & 0x7f); +/** + * + * Instantiate a valid secp256k1 Point from the X and Y coordinates. + * + * @param {BN|String} x - The X coordinate + * @param {BN|String} y - The Y coordinate + * @link https://github.com/indutny/elliptic + * @augments elliptic.curve.point + * @throws {Error} A validation error if exists + * @returns {Point} An instance of Point + * @constructor + */ +var Point = function Point(x, y, isRed) { + try { + var point = ecPoint(x, y, isRed); + } catch (e) { + throw new Error('Invalid Point'); } + point.validate(); + return point; +}; - return this._createEncoderBuffer(objid); +Point.prototype = Object.getPrototypeOf(ec.curve.point()); + +/** + * + * Instantiate a valid secp256k1 Point from only the X coordinate + * + * @param {boolean} odd - If the Y coordinate is odd + * @param {BN|String} x - The X coordinate + * @throws {Error} A validation error if exists + * @returns {Point} An instance of Point + */ +Point.fromX = function fromX(odd, x){ + try { + var point = ecPointFromX(x, odd); + } catch (e) { + throw new Error('Invalid X'); + } + point.validate(); + return point; }; -function two(num) { - if (num < 10) - return '0' + num; - else - return num; -} +/** + * + * Will return a secp256k1 ECDSA base point. + * + * @link https://en.bitcoin.it/wiki/Secp256k1 + * @returns {Point} An instance of the base point. + */ +Point.getG = function getG() { + return ec.curve.g; +}; -DERNode.prototype._encodeTime = function encodeTime(time, tag) { - var str; - var date = new Date(time); +/** + * + * Will return the max of range of valid private keys as governed by the secp256k1 ECDSA standard. + * + * @link https://en.bitcoin.it/wiki/Private_key#Range_of_valid_ECDSA_private_keys + * @returns {BN} A BN instance of the number of points on the curve + */ +Point.getN = function getN() { + return new BN(ec.curve.n.toArray()); +}; - if (tag === 'gentime') { - str = [ - two(date.getFullYear()), - two(date.getUTCMonth() + 1), - two(date.getUTCDate()), - two(date.getUTCHours()), - two(date.getUTCMinutes()), - two(date.getUTCSeconds()), - 'Z' - ].join(''); - } else if (tag === 'utctime') { - str = [ - two(date.getFullYear() % 100), - two(date.getUTCMonth() + 1), - two(date.getUTCDate()), - two(date.getUTCHours()), - two(date.getUTCMinutes()), - two(date.getUTCSeconds()), - 'Z' - ].join(''); - } else { - this.reporter.error('Encoding ' + tag + ' time is not supported yet'); - } +Point.prototype._getX = Point.prototype.getX; - return this._encodeStr(str, 'octstr'); +/** + * + * Will return the X coordinate of the Point + * + * @returns {BN} A BN instance of the X coordinate + */ +Point.prototype.getX = function getX() { + return new BN(this._getX().toArray()); }; -DERNode.prototype._encodeNull = function encodeNull() { - return this._createEncoderBuffer(''); +Point.prototype._getY = Point.prototype.getY; + +/** + * + * Will return the Y coordinate of the Point + * + * @returns {BN} A BN instance of the Y coordinate + */ +Point.prototype.getY = function getY() { + return new BN(this._getY().toArray()); }; -DERNode.prototype._encodeInt = function encodeInt(num, values) { - if (typeof num === 'string') { - if (!values) - return this.reporter.error('String int or enum given, but no values map'); - if (!values.hasOwnProperty(num)) { - return this.reporter.error('Values map doesn\'t contain: ' + - JSON.stringify(num)); - } - num = values[num]; +/** + * + * Will determine if the point is valid + * + * @link https://www.iacr.org/archive/pkc2003/25670211/25670211.pdf + * @param {Point} An instance of Point + * @throws {Error} A validation error if exists + * @returns {Point} An instance of the same Point + */ +Point.prototype.validate = function validate() { + + if (this.isInfinity()){ + throw new Error('Point cannot be equal to Infinity'); } - // Bignum, assume big endian - if (typeof num !== 'number' && !Buffer.isBuffer(num)) { - var numArray = num.toArray(); - if (!num.sign && numArray[0] & 0x80) { - numArray.unshift(0); - } - num = new Buffer(numArray); + var p2; + try { + p2 = ecPointFromX(this.getX(), this.getY().isOdd()); + } catch (e) { + throw new Error('Point does not lie on the curve'); } - if (Buffer.isBuffer(num)) { - var size = num.length; - if (num.length === 0) - size++; - - var out = new Buffer(size); - num.copy(out); - if (num.length === 0) - out[0] = 0 - return this._createEncoderBuffer(out); + if (p2.y.cmp(this.y) !== 0) { + throw new Error('Invalid y value for curve.'); } - if (num < 0x80) - return this._createEncoderBuffer(num); - - if (num < 0x100) - return this._createEncoderBuffer([0, num]); - - var size = 1; - for (var i = num; i >= 0x100; i >>= 8) - size++; - var out = new Array(size); - for (var i = out.length - 1; i >= 0; i--) { - out[i] = num & 0xff; - num >>= 8; - } - if(out[0] & 0x80) { - out.unshift(0); + //todo: needs test case + if (!(this.mul(Point.getN()).isInfinity())) { + throw new Error('Point times N must be infinity'); } - return this._createEncoderBuffer(new Buffer(out)); -}; + return this; -DERNode.prototype._encodeBool = function encodeBool(value) { - return this._createEncoderBuffer(value ? 0xff : 0); }; -DERNode.prototype._use = function use(entity, obj) { - if (typeof entity === 'function') - entity = entity(obj); - return entity._getEncoder('der').tree; -}; +Point.pointToCompressed = function pointToCompressed(point) { + var xbuf = point.getX().toBuffer({size: 32}); + var ybuf = point.getY().toBuffer({size: 32}); -DERNode.prototype._skipDefault = function skipDefault(dataBuffer, reporter, parent) { - var state = this._baseState; - var i; - if (state['default'] === null) - return false; + var prefix; + var odd = ybuf[ybuf.length - 1] % 2; + if (odd) { + prefix = Buffer.from([0x03]); + } else { + prefix = Buffer.from([0x02]); + } + return BufferUtil.concat([prefix, xbuf]); +}; - var data = dataBuffer.join(); - if (state.defaultBuffer === undefined) - state.defaultBuffer = this._encodeValue(state['default'], reporter, parent).join(); +module.exports = Point; - if (data.length !== state.defaultBuffer.length) - return false; +}).call(this,require("buffer").Buffer) +},{"../util/buffer":44,"./bn":6,"buffer":100,"elliptic":119}],10:[function(require,module,exports){ +(function (process,Buffer){ +'use strict'; - for (i=0; i < data.length; i++) - if (data[i] !== state.defaultBuffer[i]) - return false; +function Random() { +} - return true; +/* secure random bytes that sometimes throws an error due to lack of entropy */ +Random.getRandomBuffer = function(size) { + if (process.browser) + return Random.getRandomBufferBrowser(size); + else + return Random.getRandomBufferNode(size); }; -// Utility methods - -function encodeTag(tag, primitive, cls, reporter) { - var res; +Random.getRandomBufferNode = function(size) { + var crypto = require('crypto'); + return crypto.randomBytes(size); +}; - if (tag === 'seqof') - tag = 'seq'; - else if (tag === 'setof') - tag = 'set'; +Random.getRandomBufferBrowser = function(size) { + if (!window.crypto && !window.msCrypto) + throw new Error('window.crypto not available'); - if (der.tagByName.hasOwnProperty(tag)) - res = der.tagByName[tag]; - else if (typeof tag === 'number' && (tag | 0) === tag) - res = tag; + if (window.crypto && window.crypto.getRandomValues) + var crypto = window.crypto; + else if (window.msCrypto && window.msCrypto.getRandomValues) //internet explorer + var crypto = window.msCrypto; else - return reporter.error('Unknown tag: ' + tag); + throw new Error('window.crypto.getRandomValues not available'); - if (res >= 0x1f) - return reporter.error('Multi-octet tag encoding unsupported'); + var bbuf = new Uint8Array(size); + crypto.getRandomValues(bbuf); + var buf = Buffer.from(bbuf); - if (!primitive) - res |= 0x20; + return buf; +}; - res |= (der.tagClassByName[cls || 'universal'] << 6); +/* insecure random bytes, but it never fails */ +Random.getPseudoRandomBuffer = function(size) { + var b32 = 0x100000000; + var b = Buffer.alloc(size); + var r; - return res; -} + for (var i = 0; i <= size; i++) { + var j = Math.floor(i / 4); + var k = i - j * 4; + if (k === 0) { + r = Math.random() * b32; + b[i] = r & 0xff; + } else { + b[i] = (r = r >>> 8) & 0xff; + } + } -},{"../../asn1":1,"buffer":52,"inherits":104}],13:[function(require,module,exports){ -var encoders = exports; + return b; +}; -encoders.der = require('./der'); -encoders.pem = require('./pem'); +module.exports = Random; -},{"./der":12,"./pem":14}],14:[function(require,module,exports){ -var inherits = require('inherits'); +}).call(this,require('_process'),require("buffer").Buffer) +},{"_process":172,"buffer":100,"crypto":108}],11:[function(require,module,exports){ +(function (Buffer){ +'use strict'; -var DEREncoder = require('./der'); +var BN = require('./bn'); +var _ = require('lodash'); +var $ = require('../util/preconditions'); +var BufferUtil = require('../util/buffer'); +var JSUtil = require('../util/js'); -function PEMEncoder(entity) { - DEREncoder.call(this, entity); - this.enc = 'pem'; +var Signature = function Signature(r, s) { + if (!(this instanceof Signature)) { + return new Signature(r, s); + } + if (r instanceof BN) { + this.set({ + r: r, + s: s + }); + } else if (r) { + var obj = r; + this.set(obj); + } }; -inherits(PEMEncoder, DEREncoder); -module.exports = PEMEncoder; -PEMEncoder.prototype.encode = function encode(data, options) { - var buf = DEREncoder.prototype.encode.call(this, data); +/* jshint maxcomplexity: 7 */ +Signature.prototype.set = function(obj) { + this.r = obj.r || this.r || undefined; + this.s = obj.s || this.s || undefined; - var p = buf.toString('base64'); - var out = [ '-----BEGIN ' + options.label + '-----' ]; - for (var i = 0; i < p.length; i += 64) - out.push(p.slice(i, i + 64)); - out.push('-----END ' + options.label + '-----'); - return out.join('\n'); + this.i = typeof obj.i !== 'undefined' ? obj.i : this.i; //public key recovery parameter in range [0, 3] + this.compressed = typeof obj.compressed !== 'undefined' ? + obj.compressed : this.compressed; //whether the recovered pubkey is compressed + this.nhashtype = obj.nhashtype || this.nhashtype || undefined; + return this; }; -},{"./der":12,"inherits":104}],15:[function(require,module,exports){ -(function (global){ -'use strict'; - -// compare and isBuffer taken from https://github.com/feross/buffer/blob/680e9e5e488f22aac27599a57dc844a6315928dd/index.js -// original notice: - -/*! - * The buffer module from node.js, for the browser. - * - * @author Feross Aboukhadijeh - * @license MIT - */ -function compare(a, b) { - if (a === b) { - return 0; - } +Signature.fromCompact = function(buf) { + $.checkArgument(BufferUtil.isBuffer(buf), 'Argument is expected to be a Buffer'); - var x = a.length; - var y = b.length; + var sig = new Signature(); - for (var i = 0, len = Math.min(x, y); i < len; ++i) { - if (a[i] !== b[i]) { - x = a[i]; - y = b[i]; - break; - } + var compressed = true; + var i = buf.slice(0, 1)[0] - 27 - 4; + if (i < 0) { + compressed = false; + i = i + 4; } - if (x < y) { - return -1; - } - if (y < x) { - return 1; - } - return 0; -} -function isBuffer(b) { - if (global.Buffer && typeof global.Buffer.isBuffer === 'function') { - return global.Buffer.isBuffer(b); - } - return !!(b != null && b._isBuffer); -} + var b2 = buf.slice(1, 33); + var b3 = buf.slice(33, 65); -// based on node assert, original notice: + $.checkArgument(i === 0 || i === 1 || i === 2 || i === 3, new Error('i must be 0, 1, 2, or 3')); + $.checkArgument(b2.length === 32, new Error('r must be 32 bytes')); + $.checkArgument(b3.length === 32, new Error('s must be 32 bytes')); -// http://wiki.commonjs.org/wiki/Unit_Testing/1.0 -// -// THIS IS NOT TESTED NOR LIKELY TO WORK OUTSIDE V8! -// -// Originally from narwhal.js (http://narwhaljs.org) -// Copyright (c) 2009 Thomas Robinson <280north.com> -// -// Permission is hereby granted, free of charge, to any person obtaining a copy -// of this software and associated documentation files (the 'Software'), to -// deal in the Software without restriction, including without limitation the -// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or -// sell copies of the Software, and to permit persons to whom the Software is -// furnished to do so, subject to the following conditions: -// -// The above copyright notice and this permission notice shall be included in -// all copies or substantial portions of the Software. -// -// THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -// AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN -// ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION -// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + sig.compressed = compressed; + sig.i = i; + sig.r = BN.fromBuffer(b2); + sig.s = BN.fromBuffer(b3); -var util = require('util/'); -var hasOwn = Object.prototype.hasOwnProperty; -var pSlice = Array.prototype.slice; -var functionsHaveNames = (function () { - return function foo() {}.name === 'foo'; -}()); -function pToString (obj) { - return Object.prototype.toString.call(obj); -} -function isView(arrbuf) { - if (isBuffer(arrbuf)) { - return false; - } - if (typeof global.ArrayBuffer !== 'function') { - return false; - } - if (typeof ArrayBuffer.isView === 'function') { - return ArrayBuffer.isView(arrbuf); - } - if (!arrbuf) { - return false; - } - if (arrbuf instanceof DataView) { - return true; - } - if (arrbuf.buffer && arrbuf.buffer instanceof ArrayBuffer) { - return true; - } - return false; -} -// 1. The assert module provides functions that throw -// AssertionError's when particular conditions are not met. The -// assert module must conform to the following interface. + return sig; +}; -var assert = module.exports = ok; +Signature.fromDER = Signature.fromBuffer = function(buf, strict) { + var obj = Signature.parseDER(buf, strict); + var sig = new Signature(); -// 2. The AssertionError is defined in assert. -// new assert.AssertionError({ message: message, -// actual: actual, -// expected: expected }) + sig.r = obj.r; + sig.s = obj.s; -var regex = /\s*function\s+([^\(\s]*)\s*/; -// based on https://github.com/ljharb/function.prototype.name/blob/adeeeec8bfcc6068b187d7d9fb3d5bb1d3a30899/implementation.js -function getName(func) { - if (!util.isFunction(func)) { - return; - } - if (functionsHaveNames) { - return func.name; - } - var str = func.toString(); - var match = str.match(regex); - return match && match[1]; -} -assert.AssertionError = function AssertionError(options) { - this.name = 'AssertionError'; - this.actual = options.actual; - this.expected = options.expected; - this.operator = options.operator; - if (options.message) { - this.message = options.message; - this.generatedMessage = false; - } else { - this.message = getMessage(this); - this.generatedMessage = true; - } - var stackStartFunction = options.stackStartFunction || fail; - if (Error.captureStackTrace) { - Error.captureStackTrace(this, stackStartFunction); - } else { - // non v8 browsers so we can have a stacktrace - var err = new Error(); - if (err.stack) { - var out = err.stack; + return sig; +}; - // try to strip useless frames - var fn_name = getName(stackStartFunction); - var idx = out.indexOf('\n' + fn_name); - if (idx >= 0) { - // once we have located the function frame - // we need to strip out everything before it (and its line) - var next_line = out.indexOf('\n', idx + 1); - out = out.substring(next_line + 1); - } +// The format used in a tx +Signature.fromTxFormat = function(buf) { + var nhashtype = buf.readUInt8(buf.length - 1); + var derbuf = buf.slice(0, buf.length - 1); + var sig = new Signature.fromDER(derbuf, false); + sig.nhashtype = nhashtype; + return sig; +}; - this.stack = out; - } - } +Signature.fromString = function(str) { + var buf = Buffer.from(str, 'hex'); + return Signature.fromDER(buf); }; -// assert.AssertionError instanceof Error -util.inherits(assert.AssertionError, Error); -function truncate(s, n) { - if (typeof s === 'string') { - return s.length < n ? s : s.slice(0, n); - } else { - return s; - } -} -function inspect(something) { - if (functionsHaveNames || !util.isFunction(something)) { - return util.inspect(something); +/** + * In order to mimic the non-strict DER encoding of OpenSSL, set strict = false. + */ +Signature.parseDER = function(buf, strict) { + $.checkArgument(BufferUtil.isBuffer(buf), new Error('DER formatted signature should be a buffer')); + if (_.isUndefined(strict)) { + strict = true; } - var rawname = getName(something); - var name = rawname ? ': ' + rawname : ''; - return '[Function' + name + ']'; -} -function getMessage(self) { - return truncate(inspect(self.actual), 128) + ' ' + - self.operator + ' ' + - truncate(inspect(self.expected), 128); -} -// At present only the three keys mentioned above are used and -// understood by the spec. Implementations or sub modules can pass -// other keys to the AssertionError's constructor - they will be -// ignored. + var header = buf[0]; + $.checkArgument(header === 0x30, new Error('Header byte should be 0x30')); -// 3. All of the following functions must throw an AssertionError -// when a corresponding condition is not met, with a message that -// may be undefined if not provided. All assertion methods provide -// both the actual and expected values to the assertion error for -// display purposes. + var length = buf[1]; + var buflength = buf.slice(2).length; + $.checkArgument(!strict || length === buflength, new Error('Length byte should length of what follows')); -function fail(actual, expected, message, operator, stackStartFunction) { - throw new assert.AssertionError({ - message: message, - actual: actual, - expected: expected, - operator: operator, - stackStartFunction: stackStartFunction - }); -} + length = length < buflength ? length : buflength; -// EXTENSION! allows for well behaved errors defined elsewhere. -assert.fail = fail; + var rheader = buf[2 + 0]; + $.checkArgument(rheader === 0x02, new Error('Integer byte for r should be 0x02')); -// 4. Pure assertion tests whether a value is truthy, as determined -// by !!guard. -// assert.ok(guard, message_opt); -// This statement is equivalent to assert.equal(true, !!guard, -// message_opt);. To test strictly for the value true, use -// assert.strictEqual(true, guard, message_opt);. + var rlength = buf[2 + 1]; + var rbuf = buf.slice(2 + 2, 2 + 2 + rlength); + var r = BN.fromBuffer(rbuf); + var rneg = buf[2 + 1 + 1] === 0x00 ? true : false; + $.checkArgument(rlength === rbuf.length, new Error('Length of r incorrect')); -function ok(value, message) { - if (!value) fail(value, true, message, '==', assert.ok); -} -assert.ok = ok; + var sheader = buf[2 + 2 + rlength + 0]; + $.checkArgument(sheader === 0x02, new Error('Integer byte for s should be 0x02')); -// 5. The equality assertion tests shallow, coercive equality with -// ==. -// assert.equal(actual, expected, message_opt); + var slength = buf[2 + 2 + rlength + 1]; + var sbuf = buf.slice(2 + 2 + rlength + 2, 2 + 2 + rlength + 2 + slength); + var s = BN.fromBuffer(sbuf); + var sneg = buf[2 + 2 + rlength + 2 + 2] === 0x00 ? true : false; + $.checkArgument(slength === sbuf.length, new Error('Length of s incorrect')); -assert.equal = function equal(actual, expected, message) { - if (actual != expected) fail(actual, expected, message, '==', assert.equal); -}; + var sumlength = 2 + 2 + rlength + 2 + slength; + $.checkArgument(length === sumlength - 2, new Error('Length of signature incorrect')); -// 6. The non-equality assertion tests for whether two objects are not equal -// with != assert.notEqual(actual, expected, message_opt); + var obj = { + header: header, + length: length, + rheader: rheader, + rlength: rlength, + rneg: rneg, + rbuf: rbuf, + r: r, + sheader: sheader, + slength: slength, + sneg: sneg, + sbuf: sbuf, + s: s + }; -assert.notEqual = function notEqual(actual, expected, message) { - if (actual == expected) { - fail(actual, expected, message, '!=', assert.notEqual); - } + return obj; }; -// 7. The equivalence assertion tests a deep equality relation. -// assert.deepEqual(actual, expected, message_opt); -assert.deepEqual = function deepEqual(actual, expected, message) { - if (!_deepEqual(actual, expected, false)) { - fail(actual, expected, message, 'deepEqual', assert.deepEqual); +Signature.prototype.toCompact = function(i, compressed) { + i = typeof i === 'number' ? i : this.i; + compressed = typeof compressed === 'boolean' ? compressed : this.compressed; + + if (!(i === 0 || i === 1 || i === 2 || i === 3)) { + throw new Error('i must be equal to 0, 1, 2, or 3'); } -}; -assert.deepStrictEqual = function deepStrictEqual(actual, expected, message) { - if (!_deepEqual(actual, expected, true)) { - fail(actual, expected, message, 'deepStrictEqual', assert.deepStrictEqual); + var val = i + 27 + 4; + if (compressed === false) { + val = val - 4; } + var b1 = Buffer.from([val]); + var b2 = this.r.toBuffer({ + size: 32 + }); + var b3 = this.s.toBuffer({ + size: 32 + }); + return Buffer.concat([b1, b2, b3]); }; -function _deepEqual(actual, expected, strict, memos) { - // 7.1. All identical values are equivalent, as determined by ===. - if (actual === expected) { - return true; - } else if (isBuffer(actual) && isBuffer(expected)) { - return compare(actual, expected) === 0; +Signature.prototype.toBuffer = Signature.prototype.toDER = function() { + var rnbuf = this.r.toBuffer(); + var snbuf = this.s.toBuffer(); - // 7.2. If the expected value is a Date object, the actual value is - // equivalent if it is also a Date object that refers to the same time. - } else if (util.isDate(actual) && util.isDate(expected)) { - return actual.getTime() === expected.getTime(); + var rneg = rnbuf[0] & 0x80 ? true : false; + var sneg = snbuf[0] & 0x80 ? true : false; - // 7.3 If the expected value is a RegExp object, the actual value is - // equivalent if it is also a RegExp object with the same source and - // properties (`global`, `multiline`, `lastIndex`, `ignoreCase`). - } else if (util.isRegExp(actual) && util.isRegExp(expected)) { - return actual.source === expected.source && - actual.global === expected.global && - actual.multiline === expected.multiline && - actual.lastIndex === expected.lastIndex && - actual.ignoreCase === expected.ignoreCase; - - // 7.4. Other pairs that do not both pass typeof value == 'object', - // equivalence is determined by ==. - } else if ((actual === null || typeof actual !== 'object') && - (expected === null || typeof expected !== 'object')) { - return strict ? actual === expected : actual == expected; - - // If both values are instances of typed arrays, wrap their underlying - // ArrayBuffers in a Buffer each to increase performance - // This optimization requires the arrays to have the same type as checked by - // Object.prototype.toString (aka pToString). Never perform binary - // comparisons for Float*Arrays, though, since e.g. +0 === -0 but their - // bit patterns are not identical. - } else if (isView(actual) && isView(expected) && - pToString(actual) === pToString(expected) && - !(actual instanceof Float32Array || - actual instanceof Float64Array)) { - return compare(new Uint8Array(actual.buffer), - new Uint8Array(expected.buffer)) === 0; + var rbuf = rneg ? Buffer.concat([Buffer.from([0x00]), rnbuf]) : rnbuf; + var sbuf = sneg ? Buffer.concat([Buffer.from([0x00]), snbuf]) : snbuf; - // 7.5 For all other Object pairs, including Array objects, equivalence is - // determined by having the same number of owned properties (as verified - // with Object.prototype.hasOwnProperty.call), the same set of keys - // (although not necessarily the same order), equivalent values for every - // corresponding key, and an identical 'prototype' property. Note: this - // accounts for both named and indexed properties on Arrays. - } else if (isBuffer(actual) !== isBuffer(expected)) { - return false; - } else { - memos = memos || {actual: [], expected: []}; + var rlength = rbuf.length; + var slength = sbuf.length; + var length = 2 + rlength + 2 + slength; + var rheader = 0x02; + var sheader = 0x02; + var header = 0x30; - var actualIndex = memos.actual.indexOf(actual); - if (actualIndex !== -1) { - if (actualIndex === memos.expected.indexOf(expected)) { - return true; - } - } + var der = Buffer.concat([Buffer.from([header, length, rheader, rlength]), rbuf, Buffer.from([sheader, slength]), sbuf]); + return der; +}; - memos.actual.push(actual); - memos.expected.push(expected); +Signature.prototype.toString = function() { + var buf = this.toDER(); + return buf.toString('hex'); +}; - return objEquiv(actual, expected, strict, memos); +/** + * This function is translated from bitcoind's IsDERSignature and is used in + * the script interpreter. This "DER" format actually includes an extra byte, + * the nhashtype, at the end. It is really the tx format, not DER format. + * + * A canonical signature exists of: [30] [total len] [02] [len R] [R] [02] [len S] [S] [hashtype] + * Where R and S are not negative (their first byte has its highest bit not set), and not + * excessively padded (do not start with a 0 byte, unless an otherwise negative number follows, + * in which case a single 0 byte is necessary and even required). + * + * See https://bitcointalk.org/index.php?topic=8392.msg127623#msg127623 + */ +Signature.isTxDER = function(buf) { + if (buf.length < 9) { + // Non-canonical signature: too short + return false; } -} - -function isArguments(object) { - return Object.prototype.toString.call(object) == '[object Arguments]'; -} - -function objEquiv(a, b, strict, actualVisitedObjects) { - if (a === null || a === undefined || b === null || b === undefined) + if (buf.length > 73) { + // Non-canonical signature: too long return false; - // if one is a primitive, the other must be same - if (util.isPrimitive(a) || util.isPrimitive(b)) - return a === b; - if (strict && Object.getPrototypeOf(a) !== Object.getPrototypeOf(b)) + } + if (buf[0] !== 0x30) { + // Non-canonical signature: wrong type return false; - var aIsArgs = isArguments(a); - var bIsArgs = isArguments(b); - if ((aIsArgs && !bIsArgs) || (!aIsArgs && bIsArgs)) + } + if (buf[1] !== buf.length - 3) { + // Non-canonical signature: wrong length marker return false; - if (aIsArgs) { - a = pSlice.call(a); - b = pSlice.call(b); - return _deepEqual(a, b, strict); } - var ka = objectKeys(a); - var kb = objectKeys(b); - var key, i; - // having the same number of owned properties (keys incorporates - // hasOwnProperty) - if (ka.length !== kb.length) + var nLenR = buf[3]; + if (5 + nLenR >= buf.length) { + // Non-canonical signature: S length misplaced return false; - //the same set of keys (although not necessarily the same order), - ka.sort(); - kb.sort(); - //~~~cheap key test - for (i = ka.length - 1; i >= 0; i--) { - if (ka[i] !== kb[i]) - return false; } - //equivalent values for every corresponding key, and - //~~~possibly expensive deep test - for (i = ka.length - 1; i >= 0; i--) { - key = ka[i]; - if (!_deepEqual(a[key], b[key], strict, actualVisitedObjects)) - return false; + var nLenS = buf[5 + nLenR]; + if ((nLenR + nLenS + 7) !== buf.length) { + // Non-canonical signature: R+S length mismatch + return false; } - return true; -} - -// 8. The non-equivalence assertion tests for any deep inequality. -// assert.notDeepEqual(actual, expected, message_opt); -assert.notDeepEqual = function notDeepEqual(actual, expected, message) { - if (_deepEqual(actual, expected, false)) { - fail(actual, expected, message, 'notDeepEqual', assert.notDeepEqual); + var R = buf.slice(4); + if (buf[4 - 2] !== 0x02) { + // Non-canonical signature: R value type mismatch + return false; } -}; - -assert.notDeepStrictEqual = notDeepStrictEqual; -function notDeepStrictEqual(actual, expected, message) { - if (_deepEqual(actual, expected, true)) { - fail(actual, expected, message, 'notDeepStrictEqual', notDeepStrictEqual); + if (nLenR === 0) { + // Non-canonical signature: R length is zero + return false; } -} - - -// 9. The strict equality assertion tests strict equality, as determined by ===. -// assert.strictEqual(actual, expected, message_opt); - -assert.strictEqual = function strictEqual(actual, expected, message) { - if (actual !== expected) { - fail(actual, expected, message, '===', assert.strictEqual); + if (R[0] & 0x80) { + // Non-canonical signature: R value negative + return false; } -}; - -// 10. The strict non-equality assertion tests for strict inequality, as -// determined by !==. assert.notStrictEqual(actual, expected, message_opt); - -assert.notStrictEqual = function notStrictEqual(actual, expected, message) { - if (actual === expected) { - fail(actual, expected, message, '!==', assert.notStrictEqual); + if (nLenR > 1 && (R[0] === 0x00) && !(R[1] & 0x80)) { + // Non-canonical signature: R value excessively padded + return false; } -}; -function expectedException(actual, expected) { - if (!actual || !expected) { + var S = buf.slice(6 + nLenR); + if (buf[6 + nLenR - 2] !== 0x02) { + // Non-canonical signature: S value type mismatch return false; } - - if (Object.prototype.toString.call(expected) == '[object RegExp]') { - return expected.test(actual); + if (nLenS === 0) { + // Non-canonical signature: S length is zero + return false; + } + if (S[0] & 0x80) { + // Non-canonical signature: S value negative + return false; + } + if (nLenS > 1 && (S[0] === 0x00) && !(S[1] & 0x80)) { + // Non-canonical signature: S value excessively padded + return false; } + return true; +}; - try { - if (actual instanceof expected) { - return true; - } - } catch (e) { - // Ignore. The instanceof check doesn't work for arrow functions. +/** + * Compares to bitcoind's IsLowDERSignature + * See also ECDSA signature algorithm which enforces this. + * See also BIP 62, "low S values in signatures" + */ +Signature.prototype.hasLowS = function() { + if (this.s.lt(new BN(1)) || + this.s.gt(new BN('7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0', 'hex'))) { + return false; } + return true; +}; - if (Error.isPrototypeOf(expected)) { +/** + * @returns true if the nhashtype is exactly equal to one of the standard options or combinations thereof. + * Translated from bitcoind's IsDefinedHashtypeSignature + */ +Signature.prototype.hasDefinedHashtype = function() { + if (!JSUtil.isNaturalNumber(this.nhashtype)) { + return false; + } + // accept with or without Signature.SIGHASH_ANYONECANPAY by ignoring the bit + var temp = this.nhashtype & ~Signature.SIGHASH_ANYONECANPAY; + if (temp < Signature.SIGHASH_ALL || temp > Signature.SIGHASH_SINGLE) { return false; } + return true; +}; - return expected.call({}, actual) === true; -} +Signature.prototype.toTxFormat = function() { + var derbuf = this.toDER(); + var buf = Buffer.alloc(1); + buf.writeUInt8(this.nhashtype, 0); + return Buffer.concat([derbuf, buf]); +}; -function _tryBlock(block) { - var error; - try { - block(); - } catch (e) { - error = e; - } - return error; -} +Signature.SIGHASH_ALL = 0x01; +Signature.SIGHASH_NONE = 0x02; +Signature.SIGHASH_SINGLE = 0x03; +Signature.SIGHASH_ANYONECANPAY = 0x80; -function _throws(shouldThrow, block, expected, message) { - var actual; +module.exports = Signature; - if (typeof block !== 'function') { - throw new TypeError('"block" argument must be a function'); - } +}).call(this,require("buffer").Buffer) +},{"../util/buffer":44,"../util/js":45,"../util/preconditions":46,"./bn":6,"buffer":100,"lodash":156}],12:[function(require,module,exports){ +(function (Buffer){ +'use strict'; - if (typeof expected === 'string') { - message = expected; - expected = null; - } +var _ = require('lodash'); +var bs58 = require('bs58'); +var buffer = require('buffer'); - actual = _tryBlock(block); +var ALPHABET = '123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz'.split(''); - message = (expected && expected.name ? ' (' + expected.name + ').' : '.') + - (message ? ' ' + message : '.'); +var Base58 = function Base58(obj) { + /* jshint maxcomplexity: 8 */ + if (!(this instanceof Base58)) { + return new Base58(obj); + } + if (Buffer.isBuffer(obj)) { + var buf = obj; + this.fromBuffer(buf); + } else if (typeof obj === 'string') { + var str = obj; + this.fromString(str); + } else if (obj) { + this.set(obj); + } +}; - if (shouldThrow && !actual) { - fail(actual, expected, 'Missing expected exception' + message); +Base58.validCharacters = function validCharacters(chars) { + if (buffer.Buffer.isBuffer(chars)) { + chars = chars.toString(); } + return _.every(_.map(chars, function(char) { return _.includes(ALPHABET, char); })); +}; - var userProvidedMessage = typeof message === 'string'; - var isUnwantedException = !shouldThrow && util.isError(actual); - var isUnexpectedException = !shouldThrow && actual && !expected; +Base58.prototype.set = function(obj) { + this.buf = obj.buf || this.buf || undefined; + return this; +}; - if ((isUnwantedException && - userProvidedMessage && - expectedException(actual, expected)) || - isUnexpectedException) { - fail(actual, expected, 'Got unwanted exception' + message); +Base58.encode = function(buf) { + if (!buffer.Buffer.isBuffer(buf)) { + throw new Error('Input should be a buffer'); } + return bs58.encode(buf); +}; - if ((shouldThrow && actual && expected && - !expectedException(actual, expected)) || (!shouldThrow && actual)) { - throw actual; +Base58.decode = function(str) { + if (typeof str !== 'string') { + throw new Error('Input should be a string'); } -} - -// 11. Expected to throw an error: -// assert.throws(block, Error_opt, message_opt); + return Buffer.from(bs58.decode(str)); +}; -assert.throws = function(block, /*optional*/error, /*optional*/message) { - _throws(true, block, error, message); +Base58.prototype.fromBuffer = function(buf) { + this.buf = buf; + return this; }; -// EXTENSION! This is annoying to write outside this module. -assert.doesNotThrow = function(block, /*optional*/error, /*optional*/message) { - _throws(false, block, error, message); +Base58.prototype.fromString = function(str) { + var buf = Base58.decode(str); + this.buf = buf; + return this; }; -assert.ifError = function(err) { if (err) throw err; }; +Base58.prototype.toBuffer = function() { + return this.buf; +}; -var objectKeys = Object.keys || function (obj) { - var keys = []; - for (var key in obj) { - if (hasOwn.call(obj, key)) keys.push(key); - } - return keys; +Base58.prototype.toString = function() { + return Base58.encode(this.buf); }; -}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {}) -},{"util/":18}],16:[function(require,module,exports){ -if (typeof Object.create === 'function') { - // implementation from standard node.js 'util' module - module.exports = function inherits(ctor, superCtor) { - ctor.super_ = superCtor - ctor.prototype = Object.create(superCtor.prototype, { - constructor: { - value: ctor, - enumerable: false, - writable: true, - configurable: true - } - }); - }; -} else { - // old school shim for old browsers - module.exports = function inherits(ctor, superCtor) { - ctor.super_ = superCtor - var TempCtor = function () {} - TempCtor.prototype = superCtor.prototype - ctor.prototype = new TempCtor() - ctor.prototype.constructor = ctor - } -} +module.exports = Base58; -},{}],17:[function(require,module,exports){ -module.exports = function isBuffer(arg) { - return arg && typeof arg === 'object' - && typeof arg.copy === 'function' - && typeof arg.fill === 'function' - && typeof arg.readUInt8 === 'function'; -} -},{}],18:[function(require,module,exports){ -(function (process,global){ -// Copyright Joyent, Inc. and other Node contributors. -// -// Permission is hereby granted, free of charge, to any person obtaining a -// copy of this software and associated documentation files (the -// "Software"), to deal in the Software without restriction, including -// without limitation the rights to use, copy, modify, merge, publish, -// distribute, sublicense, and/or sell copies of the Software, and to permit -// persons to whom the Software is furnished to do so, subject to the -// following conditions: -// -// The above copyright notice and this permission notice shall be included -// in all copies or substantial portions of the Software. -// -// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS -// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF -// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN -// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, -// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR -// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE -// USE OR OTHER DEALINGS IN THE SOFTWARE. +}).call(this,require("buffer").Buffer) +},{"bs58":97,"buffer":100,"lodash":156}],13:[function(require,module,exports){ +(function (Buffer){ +'use strict'; -var formatRegExp = /%[sdj%]/g; -exports.format = function(f) { - if (!isString(f)) { - var objects = []; - for (var i = 0; i < arguments.length; i++) { - objects.push(inspect(arguments[i])); - } - return objects.join(' '); - } +var _ = require('lodash'); +var Base58 = require('./base58'); +var buffer = require('buffer'); +var sha256sha256 = require('../crypto/hash').sha256sha256; - var i = 1; - var args = arguments; - var len = args.length; - var str = String(f).replace(formatRegExp, function(x) { - if (x === '%%') return '%'; - if (i >= len) return x; - switch (x) { - case '%s': return String(args[i++]); - case '%d': return Number(args[i++]); - case '%j': - try { - return JSON.stringify(args[i++]); - } catch (_) { - return '[Circular]'; - } - default: - return x; - } - }); - for (var x = args[i]; i < len; x = args[++i]) { - if (isNull(x) || !isObject(x)) { - str += ' ' + x; - } else { - str += ' ' + inspect(x); - } +var Base58Check = function Base58Check(obj) { + if (!(this instanceof Base58Check)) + return new Base58Check(obj); + if (Buffer.isBuffer(obj)) { + var buf = obj; + this.fromBuffer(buf); + } else if (typeof obj === 'string') { + var str = obj; + this.fromString(str); + } else if (obj) { + this.set(obj); } - return str; }; +Base58Check.prototype.set = function(obj) { + this.buf = obj.buf || this.buf || undefined; + return this; +}; -// Mark that a method should not be used. -// Returns a modified function which warns once by default. -// If --no-deprecation is set, then it is a no-op. -exports.deprecate = function(fn, msg) { - // Allow for deprecating things in the process of starting up. - if (isUndefined(global.process)) { - return function() { - return exports.deprecate(fn, msg).apply(this, arguments); - }; +Base58Check.validChecksum = function validChecksum(data, checksum) { + if (_.isString(data)) { + data = new buffer.Buffer(Base58.decode(data)); } - - if (process.noDeprecation === true) { - return fn; + if (_.isString(checksum)) { + checksum = new buffer.Buffer(Base58.decode(checksum)); } - - var warned = false; - function deprecated() { - if (!warned) { - if (process.throwDeprecation) { - throw new Error(msg); - } else if (process.traceDeprecation) { - console.trace(msg); - } else { - console.error(msg); - } - warned = true; - } - return fn.apply(this, arguments); + if (!checksum) { + checksum = data.slice(-4); + data = data.slice(0, -4); } - - return deprecated; + return Base58Check.checksum(data).toString('hex') === checksum.toString('hex'); }; +Base58Check.decode = function(s) { + if (typeof s !== 'string') + throw new Error('Input must be a string'); -var debugs = {}; -var debugEnviron; -exports.debuglog = function(set) { - if (isUndefined(debugEnviron)) - debugEnviron = process.env.NODE_DEBUG || ''; - set = set.toUpperCase(); - if (!debugs[set]) { - if (new RegExp('\\b' + set + '\\b', 'i').test(debugEnviron)) { - var pid = process.pid; - debugs[set] = function() { - var msg = exports.format.apply(exports, arguments); - console.error('%s %d: %s', set, pid, msg); - }; - } else { - debugs[set] = function() {}; - } - } - return debugs[set]; -}; - + var buf = Buffer.from(Base58.decode(s)); -/** - * Echos the value of a value. Trys to print the value out - * in the best way possible given the different types. - * - * @param {Object} obj The object to print out. - * @param {Object} opts Optional options object that alters the output. - */ -/* legacy: obj, showHidden, depth, colors*/ -function inspect(obj, opts) { - // default options - var ctx = { - seen: [], - stylize: stylizeNoColor - }; - // legacy... - if (arguments.length >= 3) ctx.depth = arguments[2]; - if (arguments.length >= 4) ctx.colors = arguments[3]; - if (isBoolean(opts)) { - // legacy... - ctx.showHidden = opts; - } else if (opts) { - // got an "options" object - exports._extend(ctx, opts); - } - // set default options - if (isUndefined(ctx.showHidden)) ctx.showHidden = false; - if (isUndefined(ctx.depth)) ctx.depth = 2; - if (isUndefined(ctx.colors)) ctx.colors = false; - if (isUndefined(ctx.customInspect)) ctx.customInspect = true; - if (ctx.colors) ctx.stylize = stylizeWithColor; - return formatValue(ctx, obj, ctx.depth); -} -exports.inspect = inspect; + if (buf.length < 4) + throw new Error("Input string too short"); + var data = buf.slice(0, -4); + var csum = buf.slice(-4); -// http://en.wikipedia.org/wiki/ANSI_escape_code#graphics -inspect.colors = { - 'bold' : [1, 22], - 'italic' : [3, 23], - 'underline' : [4, 24], - 'inverse' : [7, 27], - 'white' : [37, 39], - 'grey' : [90, 39], - 'black' : [30, 39], - 'blue' : [34, 39], - 'cyan' : [36, 39], - 'green' : [32, 39], - 'magenta' : [35, 39], - 'red' : [31, 39], - 'yellow' : [33, 39] + var hash = sha256sha256(data); + var hash4 = hash.slice(0, 4); + + if (csum.toString('hex') !== hash4.toString('hex')) + throw new Error("Checksum mismatch"); + + return data; }; -// Don't use 'blue' not visible on cmd.exe -inspect.styles = { - 'special': 'cyan', - 'number': 'yellow', - 'boolean': 'yellow', - 'undefined': 'grey', - 'null': 'bold', - 'string': 'green', - 'date': 'magenta', - // "name": intentionally not styling - 'regexp': 'red' +Base58Check.checksum = function(buffer) { + return sha256sha256(buffer).slice(0, 4); +}; + +Base58Check.encode = function(buf) { + if (!Buffer.isBuffer(buf)) + throw new Error('Input must be a buffer'); + var checkedBuf = Buffer.alloc(buf.length + 4); + var hash = Base58Check.checksum(buf); + buf.copy(checkedBuf); + hash.copy(checkedBuf, buf.length); + return Base58.encode(checkedBuf); }; +Base58Check.prototype.fromBuffer = function(buf) { + this.buf = buf; + return this; +}; -function stylizeWithColor(str, styleType) { - var style = inspect.styles[styleType]; +Base58Check.prototype.fromString = function(str) { + var buf = Base58Check.decode(str); + this.buf = buf; + return this; +}; - if (style) { - return '\u001b[' + inspect.colors[style][0] + 'm' + str + - '\u001b[' + inspect.colors[style][1] + 'm'; +Base58Check.prototype.toBuffer = function() { + return this.buf; +}; + +Base58Check.prototype.toString = function() { + return Base58Check.encode(this.buf); +}; + +module.exports = Base58Check; + +}).call(this,require("buffer").Buffer) +},{"../crypto/hash":8,"./base58":12,"buffer":100,"lodash":156}],14:[function(require,module,exports){ +(function (Buffer){ +'use strict'; + +var _ = require('lodash'); +var $ = require('../util/preconditions'); +var BufferUtil = require('../util/buffer'); +var BN = require('../crypto/bn'); + +var BufferReader = function BufferReader(buf) { + if (!(this instanceof BufferReader)) { + return new BufferReader(buf); + } + if (_.isUndefined(buf)) { + return; + } + if (Buffer.isBuffer(buf)) { + this.set({ + buf: buf + }); + } else if (_.isString(buf)) { + this.set({ + buf: Buffer.from(buf, 'hex'), + }); + } else if (_.isObject(buf)) { + var obj = buf; + this.set(obj); } else { - return str; + throw new TypeError('Unrecognized argument for BufferReader'); } -} +}; +BufferReader.prototype.set = function(obj) { + this.buf = obj.buf || this.buf || undefined; + this.pos = obj.pos || this.pos || 0; + return this; +}; -function stylizeNoColor(str, styleType) { - return str; -} +BufferReader.prototype.eof = function() { + if(this.buf) { + return this.pos >= this.buf.length; + } else { + return true; + } +}; +BufferReader.prototype.finished = BufferReader.prototype.eof; -function arrayToHash(array) { - var hash = {}; +BufferReader.prototype.read = function(len) { + $.checkArgument(!_.isUndefined(len), 'Must specify a length'); + var buf = this.buf.slice(this.pos, this.pos + len); + this.pos = this.pos + len; + return buf; +}; - array.forEach(function(val, idx) { - hash[val] = true; - }); +BufferReader.prototype.readAll = function() { + var buf = this.buf.slice(this.pos, this.buf.length); + this.pos = this.buf.length; + return buf; +}; - return hash; -} +BufferReader.prototype.readUInt8 = function() { + var val = this.buf.readUInt8(this.pos); + this.pos = this.pos + 1; + return val; +}; +BufferReader.prototype.readUInt16BE = function() { + var val = this.buf.readUInt16BE(this.pos); + this.pos = this.pos + 2; + return val; +}; -function formatValue(ctx, value, recurseTimes) { - // Provide a hook for user-specified inspect functions. - // Check that value is an object with an inspect function on it - if (ctx.customInspect && - value && - isFunction(value.inspect) && - // Filter out the util module, it's inspect function is special - value.inspect !== exports.inspect && - // Also filter out any prototype objects using the circular check. - !(value.constructor && value.constructor.prototype === value)) { - var ret = value.inspect(recurseTimes, ctx); - if (!isString(ret)) { - ret = formatValue(ctx, ret, recurseTimes); - } - return ret; - } +BufferReader.prototype.readUInt16LE = function() { + var val = this.buf.readUInt16LE(this.pos); + this.pos = this.pos + 2; + return val; +}; - // Primitive types cannot have properties - var primitive = formatPrimitive(ctx, value); - if (primitive) { - return primitive; - } +BufferReader.prototype.readUInt32BE = function() { + var val = this.buf.readUInt32BE(this.pos); + this.pos = this.pos + 4; + return val; +}; - // Look up the keys of the object. - var keys = Object.keys(value); - var visibleKeys = arrayToHash(keys); +BufferReader.prototype.readUInt32LE = function() { + var val = this.buf.readUInt32LE(this.pos); + this.pos = this.pos + 4; + return val; +}; - if (ctx.showHidden) { - keys = Object.getOwnPropertyNames(value); - } +BufferReader.prototype.readInt32LE = function() { + var val = this.buf.readInt32LE(this.pos); + this.pos = this.pos + 4; + return val; +}; - // IE doesn't make error fields non-enumerable - // http://msdn.microsoft.com/en-us/library/ie/dww52sbt(v=vs.94).aspx - if (isError(value) - && (keys.indexOf('message') >= 0 || keys.indexOf('description') >= 0)) { - return formatError(value); +BufferReader.prototype.readUInt64BEBN = function() { + var buf = this.buf.slice(this.pos, this.pos + 8); + var bn = BN.fromBuffer(buf); + this.pos = this.pos + 8; + return bn; +}; + +BufferReader.prototype.readUInt64LEBN = function() { + var second = this.buf.readUInt32LE(this.pos); + var first = this.buf.readUInt32LE(this.pos + 4); + var combined = (first * 0x100000000) + second; + // Instantiating an instance of BN with a number is faster than with an + // array or string. However, the maximum safe number for a double precision + // floating point is 2 ^ 52 - 1 (0x1fffffffffffff), thus we can safely use + // non-floating point numbers less than this amount (52 bits). And in the case + // that the number is larger, we can instatiate an instance of BN by passing + // an array from the buffer (slower) and specifying the endianness. + var bn; + if (combined <= 0x1fffffffffffff) { + bn = new BN(combined); + } else { + var data = Array.prototype.slice.call(this.buf, this.pos, this.pos + 8); + bn = new BN(data, 10, 'le'); } + this.pos = this.pos + 8; + return bn; +}; - // Some type of object without properties can be shortcutted. - if (keys.length === 0) { - if (isFunction(value)) { - var name = value.name ? ': ' + value.name : ''; - return ctx.stylize('[Function' + name + ']', 'special'); - } - if (isRegExp(value)) { - return ctx.stylize(RegExp.prototype.toString.call(value), 'regexp'); - } - if (isDate(value)) { - return ctx.stylize(Date.prototype.toString.call(value), 'date'); - } - if (isError(value)) { - return formatError(value); - } +BufferReader.prototype.readVarintNum = function() { + var first = this.readUInt8(); + switch (first) { + case 0xFD: + return this.readUInt16LE(); + case 0xFE: + return this.readUInt32LE(); + case 0xFF: + var bn = this.readUInt64LEBN(); + var n = bn.toNumber(); + if (n <= Math.pow(2, 53)) { + return n; + } else { + throw new Error('number too large to retain precision - use readVarintBN'); + } + break; + default: + return first; } +}; - var base = '', array = false, braces = ['{', '}']; +/** + * reads a length prepended buffer + */ +BufferReader.prototype.readVarLengthBuffer = function() { + var len = this.readVarintNum(); + var buf = this.read(len); + $.checkState(buf.length === len, 'Invalid length while reading varlength buffer. ' + + 'Expected to read: ' + len + ' and read ' + buf.length); + return buf; +}; - // Make Array say that they are Array - if (isArray(value)) { - array = true; - braces = ['[', ']']; +BufferReader.prototype.readVarintBuf = function() { + var first = this.buf.readUInt8(this.pos); + switch (first) { + case 0xFD: + return this.read(1 + 2); + case 0xFE: + return this.read(1 + 4); + case 0xFF: + return this.read(1 + 8); + default: + return this.read(1); } +}; - // Make functions say that they are functions - if (isFunction(value)) { - var n = value.name ? ': ' + value.name : ''; - base = ' [Function' + n + ']'; +BufferReader.prototype.readVarintBN = function() { + var first = this.readUInt8(); + switch (first) { + case 0xFD: + return new BN(this.readUInt16LE()); + case 0xFE: + return new BN(this.readUInt32LE()); + case 0xFF: + return this.readUInt64LEBN(); + default: + return new BN(first); } +}; - // Make RegExps say that they are RegExps - if (isRegExp(value)) { - base = ' ' + RegExp.prototype.toString.call(value); +BufferReader.prototype.reverse = function() { + var buf = Buffer.alloc(this.buf.length); + for (var i = 0; i < buf.length; i++) { + buf[i] = this.buf[this.buf.length - 1 - i]; } + this.buf = buf; + return this; +}; - // Make dates with properties first say the date - if (isDate(value)) { - base = ' ' + Date.prototype.toUTCString.call(value); +BufferReader.prototype.readReverse = function(len) { + if (_.isUndefined(len)) { + len = this.buf.length; } + var buf = this.buf.slice(this.pos, this.pos + len); + this.pos = this.pos + len; + return BufferUtil.reverse(buf); +}; - // Make error with message first say the error - if (isError(value)) { - base = ' ' + formatError(value); - } +module.exports = BufferReader; - if (keys.length === 0 && (!array || value.length == 0)) { - return braces[0] + base + braces[1]; - } +}).call(this,require("buffer").Buffer) +},{"../crypto/bn":6,"../util/buffer":44,"../util/preconditions":46,"buffer":100,"lodash":156}],15:[function(require,module,exports){ +(function (Buffer){ +'use strict'; - if (recurseTimes < 0) { - if (isRegExp(value)) { - return ctx.stylize(RegExp.prototype.toString.call(value), 'regexp'); - } else { - return ctx.stylize('[Object]', 'special'); - } - } +var bufferUtil = require('../util/buffer'); +var assert = require('assert'); - ctx.seen.push(value); +var BufferWriter = function BufferWriter(obj) { + if (!(this instanceof BufferWriter)) + return new BufferWriter(obj); + this.bufLen = 0; + if (obj) + this.set(obj); + else + this.bufs = []; +}; - var output; - if (array) { - output = formatArray(ctx, value, recurseTimes, visibleKeys, keys); - } else { - output = keys.map(function(key) { - return formatProperty(ctx, value, recurseTimes, visibleKeys, key, array); - }); - } +BufferWriter.prototype.set = function(obj) { + this.bufs = obj.bufs || this.bufs || []; + this.bufLen = this.bufs.reduce(function(prev, buf){ return prev + buf.length; }, 0); + return this; +}; - ctx.seen.pop(); +BufferWriter.prototype.toBuffer = function() { + return this.concat(); +}; - return reduceToSingleString(output, base, braces); -} +BufferWriter.prototype.concat = function() { + return Buffer.concat(this.bufs, this.bufLen); +}; +BufferWriter.prototype.write = function(buf) { + assert(bufferUtil.isBuffer(buf)); + this.bufs.push(buf); + this.bufLen += buf.length; + return this; +}; -function formatPrimitive(ctx, value) { - if (isUndefined(value)) - return ctx.stylize('undefined', 'undefined'); - if (isString(value)) { - var simple = '\'' + JSON.stringify(value).replace(/^"|"$/g, '') - .replace(/'/g, "\\'") - .replace(/\\"/g, '"') + '\''; - return ctx.stylize(simple, 'string'); - } - if (isNumber(value)) - return ctx.stylize('' + value, 'number'); - if (isBoolean(value)) - return ctx.stylize('' + value, 'boolean'); - // For some reason typeof null is "object", so special case here. - if (isNull(value)) - return ctx.stylize('null', 'null'); -} +BufferWriter.prototype.writeReverse = function(buf) { + assert(bufferUtil.isBuffer(buf)); + this.bufs.push(bufferUtil.reverse(buf)); + this.bufLen += buf.length; + return this; +}; +BufferWriter.prototype.writeUInt8 = function(n) { + var buf = Buffer.alloc(1); + buf.writeUInt8(n, 0); + this.write(buf); + return this; +}; -function formatError(value) { - return '[' + Error.prototype.toString.call(value) + ']'; -} +BufferWriter.prototype.writeUInt16BE = function(n) { + var buf = Buffer.alloc(2); + buf.writeUInt16BE(n, 0); + this.write(buf); + return this; +}; +BufferWriter.prototype.writeUInt16LE = function(n) { + var buf = Buffer.alloc(2); + buf.writeUInt16LE(n, 0); + this.write(buf); + return this; +}; -function formatArray(ctx, value, recurseTimes, visibleKeys, keys) { - var output = []; - for (var i = 0, l = value.length; i < l; ++i) { - if (hasOwnProperty(value, String(i))) { - output.push(formatProperty(ctx, value, recurseTimes, visibleKeys, - String(i), true)); - } else { - output.push(''); - } - } - keys.forEach(function(key) { - if (!key.match(/^\d+$/)) { - output.push(formatProperty(ctx, value, recurseTimes, visibleKeys, - key, true)); - } - }); - return output; -} +BufferWriter.prototype.writeUInt32BE = function(n) { + var buf = Buffer.alloc(4); + buf.writeUInt32BE(n, 0); + this.write(buf); + return this; +}; +BufferWriter.prototype.writeInt32LE = function(n) { + var buf = Buffer.alloc(4); + buf.writeInt32LE(n, 0); + this.write(buf); + return this; +}; -function formatProperty(ctx, value, recurseTimes, visibleKeys, key, array) { - var name, str, desc; - desc = Object.getOwnPropertyDescriptor(value, key) || { value: value[key] }; - if (desc.get) { - if (desc.set) { - str = ctx.stylize('[Getter/Setter]', 'special'); - } else { - str = ctx.stylize('[Getter]', 'special'); - } - } else { - if (desc.set) { - str = ctx.stylize('[Setter]', 'special'); - } - } - if (!hasOwnProperty(visibleKeys, key)) { - name = '[' + key + ']'; - } - if (!str) { - if (ctx.seen.indexOf(desc.value) < 0) { - if (isNull(recurseTimes)) { - str = formatValue(ctx, desc.value, null); - } else { - str = formatValue(ctx, desc.value, recurseTimes - 1); - } - if (str.indexOf('\n') > -1) { - if (array) { - str = str.split('\n').map(function(line) { - return ' ' + line; - }).join('\n').substr(2); - } else { - str = '\n' + str.split('\n').map(function(line) { - return ' ' + line; - }).join('\n'); - } - } - } else { - str = ctx.stylize('[Circular]', 'special'); - } - } - if (isUndefined(name)) { - if (array && key.match(/^\d+$/)) { - return str; - } - name = JSON.stringify('' + key); - if (name.match(/^"([a-zA-Z_][a-zA-Z_0-9]*)"$/)) { - name = name.substr(1, name.length - 2); - name = ctx.stylize(name, 'name'); - } else { - name = name.replace(/'/g, "\\'") - .replace(/\\"/g, '"') - .replace(/(^"|"$)/g, "'"); - name = ctx.stylize(name, 'string'); - } - } - - return name + ': ' + str; -} - - -function reduceToSingleString(output, base, braces) { - var numLinesEst = 0; - var length = output.reduce(function(prev, cur) { - numLinesEst++; - if (cur.indexOf('\n') >= 0) numLinesEst++; - return prev + cur.replace(/\u001b\[\d\d?m/g, '').length + 1; - }, 0); - - if (length > 60) { - return braces[0] + - (base === '' ? '' : base + '\n ') + - ' ' + - output.join(',\n ') + - ' ' + - braces[1]; - } - - return braces[0] + base + ' ' + output.join(', ') + ' ' + braces[1]; -} - - -// NOTE: These type checking functions intentionally don't use `instanceof` -// because it is fragile and can be easily faked with `Object.create()`. -function isArray(ar) { - return Array.isArray(ar); -} -exports.isArray = isArray; - -function isBoolean(arg) { - return typeof arg === 'boolean'; -} -exports.isBoolean = isBoolean; - -function isNull(arg) { - return arg === null; -} -exports.isNull = isNull; - -function isNullOrUndefined(arg) { - return arg == null; -} -exports.isNullOrUndefined = isNullOrUndefined; - -function isNumber(arg) { - return typeof arg === 'number'; -} -exports.isNumber = isNumber; - -function isString(arg) { - return typeof arg === 'string'; -} -exports.isString = isString; - -function isSymbol(arg) { - return typeof arg === 'symbol'; -} -exports.isSymbol = isSymbol; - -function isUndefined(arg) { - return arg === void 0; -} -exports.isUndefined = isUndefined; +BufferWriter.prototype.writeUInt32LE = function(n) { + var buf = Buffer.alloc(4); + buf.writeUInt32LE(n, 0); + this.write(buf); + return this; +}; -function isRegExp(re) { - return isObject(re) && objectToString(re) === '[object RegExp]'; -} -exports.isRegExp = isRegExp; +BufferWriter.prototype.writeUInt64BEBN = function(bn) { + var buf = bn.toBuffer({size: 8}); + this.write(buf); + return this; +}; -function isObject(arg) { - return typeof arg === 'object' && arg !== null; -} -exports.isObject = isObject; +BufferWriter.prototype.writeUInt64LEBN = function(bn) { + var buf = bn.toBuffer({size: 8}); + this.writeReverse(buf); + return this; +}; -function isDate(d) { - return isObject(d) && objectToString(d) === '[object Date]'; -} -exports.isDate = isDate; +BufferWriter.prototype.writeVarintNum = function(n) { + var buf = BufferWriter.varintBufNum(n); + this.write(buf); + return this; +}; -function isError(e) { - return isObject(e) && - (objectToString(e) === '[object Error]' || e instanceof Error); -} -exports.isError = isError; +BufferWriter.prototype.writeVarintBN = function(bn) { + var buf = BufferWriter.varintBufBN(bn); + this.write(buf); + return this; +}; -function isFunction(arg) { - return typeof arg === 'function'; -} -exports.isFunction = isFunction; +BufferWriter.varintBufNum = function(n) { + var buf = undefined; + if (n < 253) { + buf = Buffer.alloc(1); + buf.writeUInt8(n, 0); + } else if (n < 0x10000) { + buf = Buffer.alloc(1 + 2); + buf.writeUInt8(253, 0); + buf.writeUInt16LE(n, 1); + } else if (n < 0x100000000) { + buf = Buffer.alloc(1 + 4); + buf.writeUInt8(254, 0); + buf.writeUInt32LE(n, 1); + } else { + buf = Buffer.alloc(1 + 8); + buf.writeUInt8(255, 0); + buf.writeInt32LE(n & -1, 1); + buf.writeUInt32LE(Math.floor(n / 0x100000000), 5); + } + return buf; +}; -function isPrimitive(arg) { - return arg === null || - typeof arg === 'boolean' || - typeof arg === 'number' || - typeof arg === 'string' || - typeof arg === 'symbol' || // ES6 symbol - typeof arg === 'undefined'; -} -exports.isPrimitive = isPrimitive; +BufferWriter.varintBufBN = function(bn) { + var buf = undefined; + var n = bn.toNumber(); + if (n < 253) { + buf = Buffer.alloc(1); + buf.writeUInt8(n, 0); + } else if (n < 0x10000) { + buf = Buffer.alloc(1 + 2); + buf.writeUInt8(253, 0); + buf.writeUInt16LE(n, 1); + } else if (n < 0x100000000) { + buf = Buffer.alloc(1 + 4); + buf.writeUInt8(254, 0); + buf.writeUInt32LE(n, 1); + } else { + var bw = new BufferWriter(); + bw.writeUInt8(255); + bw.writeUInt64LEBN(bn); + var buf = bw.concat(); + } + return buf; +}; -exports.isBuffer = require('./support/isBuffer'); +module.exports = BufferWriter; -function objectToString(o) { - return Object.prototype.toString.call(o); -} +}).call(this,require("buffer").Buffer) +},{"../util/buffer":44,"assert":61,"buffer":100}],16:[function(require,module,exports){ +(function (Buffer){ +'use strict'; +var BufferWriter = require('./bufferwriter'); +var BufferReader = require('./bufferreader'); +var BN = require('../crypto/bn'); -function pad(n) { - return n < 10 ? '0' + n.toString(10) : n.toString(10); -} +var Varint = function Varint(buf) { + if (!(this instanceof Varint)) + return new Varint(buf); + if (Buffer.isBuffer(buf)) { + this.buf = buf; + } else if (typeof buf === 'number') { + var num = buf; + this.fromNumber(num); + } else if (buf instanceof BN) { + var bn = buf; + this.fromBN(bn); + } else if (buf) { + var obj = buf; + this.set(obj); + } +}; +Varint.prototype.set = function(obj) { + this.buf = obj.buf || this.buf; + return this; +}; -var months = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', - 'Oct', 'Nov', 'Dec']; +Varint.prototype.fromString = function(str) { + this.set({ + buf: Buffer.from(str, 'hex') + }); + return this; +}; -// 26 Feb 16:19:34 -function timestamp() { - var d = new Date(); - var time = [pad(d.getHours()), - pad(d.getMinutes()), - pad(d.getSeconds())].join(':'); - return [d.getDate(), months[d.getMonth()], time].join(' '); -} +Varint.prototype.toString = function() { + return this.buf.toString('hex'); +}; +Varint.prototype.fromBuffer = function(buf) { + this.buf = buf; + return this; +}; -// log is just a thin wrapper to console.log that prepends a timestamp -exports.log = function() { - console.log('%s - %s', timestamp(), exports.format.apply(exports, arguments)); +Varint.prototype.fromBufferReader = function(br) { + this.buf = br.readVarintBuf(); + return this; }; +Varint.prototype.fromBN = function(bn) { + this.buf = BufferWriter().writeVarintBN(bn).concat(); + return this; +}; -/** - * Inherit the prototype methods from one constructor into another. - * - * The Function.prototype.inherits from lang.js rewritten as a standalone - * function (not on Function.prototype). NOTE: If this file is to be loaded - * during bootstrapping this function needs to be rewritten using some native - * functions as prototype setup using normal JavaScript does not work as - * expected during bootstrapping (see mirror.js in r114903). - * - * @param {function} ctor Constructor function which needs to inherit the - * prototype. - * @param {function} superCtor Constructor function to inherit prototype from. - */ -exports.inherits = require('inherits'); +Varint.prototype.fromNumber = function(num) { + this.buf = BufferWriter().writeVarintNum(num).concat(); + return this; +}; -exports._extend = function(origin, add) { - // Don't do anything if add isn't an object - if (!add || !isObject(add)) return origin; +Varint.prototype.toBuffer = function() { + return this.buf; +}; - var keys = Object.keys(add); - var i = keys.length; - while (i--) { - origin[keys[i]] = add[keys[i]]; - } - return origin; +Varint.prototype.toBN = function() { + return BufferReader(this.buf).readVarintBN(); }; -function hasOwnProperty(obj, prop) { - return Object.prototype.hasOwnProperty.call(obj, prop); -} +Varint.prototype.toNumber = function() { + return BufferReader(this.buf).readVarintNum(); +}; -}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {}) -},{"./support/isBuffer":17,"_process":122,"inherits":16}],19:[function(require,module,exports){ -'use strict' +module.exports = Varint; -exports.byteLength = byteLength -exports.toByteArray = toByteArray -exports.fromByteArray = fromByteArray +}).call(this,require("buffer").Buffer) +},{"../crypto/bn":6,"./bufferreader":14,"./bufferwriter":15,"buffer":100}],17:[function(require,module,exports){ +'use strict'; -var lookup = [] -var revLookup = [] -var Arr = typeof Uint8Array !== 'undefined' ? Uint8Array : Array +var _ = require('lodash'); -var code = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/' -for (var i = 0, len = code.length; i < len; ++i) { - lookup[i] = code[i] - revLookup[code.charCodeAt(i)] = i +function format(message, args) { + return message + .replace('{0}', args[0]) + .replace('{1}', args[1]) + .replace('{2}', args[2]); } - -// Support decoding URL-safe base64 strings, as Node.js does. -// See: https://en.wikipedia.org/wiki/Base64#URL_applications -revLookup['-'.charCodeAt(0)] = 62 -revLookup['_'.charCodeAt(0)] = 63 - -function getLens (b64) { - var len = b64.length - - if (len % 4 > 0) { - throw new Error('Invalid string. Length must be a multiple of 4') +var traverseNode = function(parent, errorDefinition) { + var NodeError = function() { + if (_.isString(errorDefinition.message)) { + this.message = format(errorDefinition.message, arguments); + } else if (_.isFunction(errorDefinition.message)) { + this.message = errorDefinition.message.apply(null, arguments); + } else { + throw new Error('Invalid error definition for ' + errorDefinition.name); + } + this.stack = this.message + '\n' + (new Error()).stack; + }; + NodeError.prototype = Object.create(parent.prototype); + NodeError.prototype.name = parent.prototype.name + errorDefinition.name; + parent[errorDefinition.name] = NodeError; + if (errorDefinition.errors) { + childDefinitions(NodeError, errorDefinition.errors); } + return NodeError; +}; - // Trim off extra bytes after placeholder bytes are found - // See: https://github.com/beatgammit/base64-js/issues/42 - var validLen = b64.indexOf('=') - if (validLen === -1) validLen = len - - var placeHoldersLen = validLen === len - ? 0 - : 4 - (validLen % 4) - - return [validLen, placeHoldersLen] -} - -// base64 is 4/3 + up to two characters of the original data -function byteLength (b64) { - var lens = getLens(b64) - var validLen = lens[0] - var placeHoldersLen = lens[1] - return ((validLen + placeHoldersLen) * 3 / 4) - placeHoldersLen -} - -function _byteLength (b64, validLen, placeHoldersLen) { - return ((validLen + placeHoldersLen) * 3 / 4) - placeHoldersLen -} +/* jshint latedef: false */ +var childDefinitions = function(parent, childDefinitions) { + _.each(childDefinitions, function(childDefinition) { + traverseNode(parent, childDefinition); + }); +}; +/* jshint latedef: true */ -function toByteArray (b64) { - var tmp - var lens = getLens(b64) - var validLen = lens[0] - var placeHoldersLen = lens[1] +var traverseRoot = function(parent, errorsDefinition) { + childDefinitions(parent, errorsDefinition); + return parent; +}; - var arr = new Arr(_byteLength(b64, validLen, placeHoldersLen)) - var curByte = 0 +var bitcore = {}; +bitcore.Error = function() { + this.message = 'Internal error'; + this.stack = this.message + '\n' + (new Error()).stack; +}; +bitcore.Error.prototype = Object.create(Error.prototype); +bitcore.Error.prototype.name = 'bitcore.Error'; - // if there are placeholders, only get up to the last complete 4 chars - var len = placeHoldersLen > 0 - ? validLen - 4 - : validLen - for (var i = 0; i < len; i += 4) { - tmp = - (revLookup[b64.charCodeAt(i)] << 18) | - (revLookup[b64.charCodeAt(i + 1)] << 12) | - (revLookup[b64.charCodeAt(i + 2)] << 6) | - revLookup[b64.charCodeAt(i + 3)] - arr[curByte++] = (tmp >> 16) & 0xFF - arr[curByte++] = (tmp >> 8) & 0xFF - arr[curByte++] = tmp & 0xFF - } +var data = require('./spec'); +traverseRoot(bitcore.Error, data); - if (placeHoldersLen === 2) { - tmp = - (revLookup[b64.charCodeAt(i)] << 2) | - (revLookup[b64.charCodeAt(i + 1)] >> 4) - arr[curByte++] = tmp & 0xFF - } +module.exports = bitcore.Error; - if (placeHoldersLen === 1) { - tmp = - (revLookup[b64.charCodeAt(i)] << 10) | - (revLookup[b64.charCodeAt(i + 1)] << 4) | - (revLookup[b64.charCodeAt(i + 2)] >> 2) - arr[curByte++] = (tmp >> 8) & 0xFF - arr[curByte++] = tmp & 0xFF - } +module.exports.extend = function(spec) { + return traverseNode(bitcore.Error, spec); +}; - return arr -} +},{"./spec":18,"lodash":156}],18:[function(require,module,exports){ +'use strict'; -function tripletToBase64 (num) { - return lookup[num >> 18 & 0x3F] + - lookup[num >> 12 & 0x3F] + - lookup[num >> 6 & 0x3F] + - lookup[num & 0x3F] -} +var docsURL = 'http://bitcore.io/'; -function encodeChunk (uint8, start, end) { - var tmp - var output = [] - for (var i = start; i < end; i += 3) { - tmp = - ((uint8[i] << 16) & 0xFF0000) + - ((uint8[i + 1] << 8) & 0xFF00) + - (uint8[i + 2] & 0xFF) - output.push(tripletToBase64(tmp)) +module.exports = [{ + name: 'InvalidB58Char', + message: 'Invalid Base58 character: {0} in {1}' +}, { + name: 'InvalidB58Checksum', + message: 'Invalid Base58 checksum for {0}' +}, { + name: 'InvalidNetwork', + message: 'Invalid version for network: got {0}' +}, { + name: 'InvalidState', + message: 'Invalid state: {0}' +}, { + name: 'NotImplemented', + message: 'Function {0} was not implemented yet' +}, { + name: 'InvalidNetworkArgument', + message: 'Invalid network: must be "livenet" or "testnet", got {0}' +}, { + name: 'InvalidArgument', + message: function() { + return 'Invalid Argument' + (arguments[0] ? (': ' + arguments[0]) : '') + + (arguments[1] ? (' Documentation: ' + docsURL + arguments[1]) : ''); } - return output.join('') -} - -function fromByteArray (uint8) { - var tmp - var len = uint8.length - var extraBytes = len % 3 // if we have 1 byte left, pad 2 bytes - var parts = [] - var maxChunkLength = 16383 // must be multiple of 3 - - // go through the array every three bytes, we'll deal with trailing stuff later - for (var i = 0, len2 = len - extraBytes; i < len2; i += maxChunkLength) { - parts.push(encodeChunk( - uint8, i, (i + maxChunkLength) > len2 ? len2 : (i + maxChunkLength) - )) +}, { + name: 'AbstractMethodInvoked', + message: 'Abstract Method Invocation: {0}' +}, { + name: 'InvalidArgumentType', + message: function() { + return 'Invalid Argument for ' + arguments[2] + ', expected ' + arguments[1] + ' but got ' + typeof arguments[0]; } +}, { + name: 'Unit', + message: 'Internal Error on Unit {0}', + errors: [{ + 'name': 'UnknownCode', + 'message': 'Unrecognized unit code: {0}' + }, { + 'name': 'InvalidRate', + 'message': 'Invalid exchange rate: {0}' + }] +}, { + name: 'MerkleBlock', + message: 'Internal Error on MerkleBlock {0}', + errors: [{ + 'name': 'InvalidMerkleTree', + 'message': 'This MerkleBlock contain an invalid Merkle Tree' + }] +}, { + name: 'Transaction', + message: 'Internal Error on Transaction {0}', + errors: [{ + name: 'Input', + message: 'Internal Error on Input {0}', + errors: [{ + name: 'MissingScript', + message: 'Need a script to create an input' + }, { + name: 'UnsupportedScript', + message: 'Unsupported input script type: {0}' + }, { + name: 'MissingPreviousOutput', + message: 'No previous output information.' + }] + }, { + name: 'NeedMoreInfo', + message: '{0}' + }, { + name: 'InvalidSorting', + message: 'The sorting function provided did not return the change output as one of the array elements' + }, { + name: 'InvalidOutputAmountSum', + message: '{0}' + }, { + name: 'MissingSignatures', + message: 'Some inputs have not been fully signed' + }, { + name: 'InvalidIndex', + message: 'Invalid index: {0} is not between 0, {1}' + }, { + name: 'UnableToVerifySignature', + message: 'Unable to verify signature: {0}' + }, { + name: 'DustOutputs', + message: 'Dust amount detected in one output' + }, { + name: 'InvalidSatoshis', + message: 'Output satoshis are invalid', + }, { + name: 'FeeError', + message: 'Internal Error on Fee {0}', + errors: [{ + name: 'TooSmall', + message: 'Fee is too small: {0}', + }, { + name: 'TooLarge', + message: 'Fee is too large: {0}', + }, { + name: 'Different', + message: 'Unspent value is different from specified fee: {0}', + }] + }, { + name: 'ChangeAddressMissing', + message: 'Change address is missing' + }, { + name: 'BlockHeightTooHigh', + message: 'Block Height can be at most 2^32 -1' + }, { + name: 'NLockTimeOutOfRange', + message: 'Block Height can only be between 0 and 499 999 999' + }, { + name: 'LockTimeTooEarly', + message: 'Lock Time can\'t be earlier than UNIX date 500 000 000' + }] +}, { + name: 'Script', + message: 'Internal Error on Script {0}', + errors: [{ + name: 'UnrecognizedAddress', + message: 'Expected argument {0} to be an address' + }, { + name: 'CantDeriveAddress', + message: 'Can\'t derive address associated with script {0}, needs to be p2pkh in, p2pkh out, p2sh in, or p2sh out.' + }, { + name: 'InvalidBuffer', + message: 'Invalid script buffer: can\'t parse valid script from given buffer {0}' + }] +}, { + name: 'HDPrivateKey', + message: 'Internal Error on HDPrivateKey {0}', + errors: [{ + name: 'InvalidDerivationArgument', + message: 'Invalid derivation argument {0}, expected string, or number and boolean' + }, { + name: 'InvalidEntropyArgument', + message: 'Invalid entropy: must be an hexa string or binary buffer, got {0}', + errors: [{ + name: 'TooMuchEntropy', + message: 'Invalid entropy: more than 512 bits is non standard, got "{0}"' + }, { + name: 'NotEnoughEntropy', + message: 'Invalid entropy: at least 128 bits needed, got "{0}"' + }] + }, { + name: 'InvalidLength', + message: 'Invalid length for xprivkey string in {0}' + }, { + name: 'InvalidPath', + message: 'Invalid derivation path: {0}' + }, { + name: 'UnrecognizedArgument', + message: 'Invalid argument: creating a HDPrivateKey requires a string, buffer, json or object, got "{0}"' + }] +}, { + name: 'HDPublicKey', + message: 'Internal Error on HDPublicKey {0}', + errors: [{ + name: 'ArgumentIsPrivateExtended', + message: 'Argument is an extended private key: {0}' + }, { + name: 'InvalidDerivationArgument', + message: 'Invalid derivation argument: got {0}' + }, { + name: 'InvalidLength', + message: 'Invalid length for xpubkey: got "{0}"' + }, { + name: 'InvalidPath', + message: 'Invalid derivation path, it should look like: "m/1/100", got "{0}"' + }, { + name: 'InvalidIndexCantDeriveHardened', + message: 'Invalid argument: creating a hardened path requires an HDPrivateKey' + }, { + name: 'MustSupplyArgument', + message: 'Must supply an argument to create a HDPublicKey' + }, { + name: 'UnrecognizedArgument', + message: 'Invalid argument for creation, must be string, json, buffer, or object' + }] +}]; - // pad the end with zeros, but make sure to not forget the extra bytes - if (extraBytes === 1) { - tmp = uint8[len - 1] - parts.push( - lookup[tmp >> 2] + - lookup[(tmp << 4) & 0x3F] + - '==' - ) - } else if (extraBytes === 2) { - tmp = (uint8[len - 2] << 8) + uint8[len - 1] - parts.push( - lookup[tmp >> 10] + - lookup[(tmp >> 4) & 0x3F] + - lookup[(tmp << 2) & 0x3F] + - '=' - ) - } - - return parts.join('') -} - -},{}],20:[function(require,module,exports){ -(function (module, exports) { - 'use strict'; +},{}],19:[function(require,module,exports){ +(function (Buffer){ +'use strict'; - // Utils - function assert (val, msg) { - if (!val) throw new Error(msg || 'Assertion failed'); - } - // Could use `inherits` module, but don't want to move from single file - // architecture yet. - function inherits (ctor, superCtor) { - ctor.super_ = superCtor; - var TempCtor = function () {}; - TempCtor.prototype = superCtor.prototype; - ctor.prototype = new TempCtor(); - ctor.prototype.constructor = ctor; - } +var assert = require('assert'); +var buffer = require('buffer'); +var _ = require('lodash'); +var $ = require('./util/preconditions'); - // BN +var BN = require('./crypto/bn'); +var Base58 = require('./encoding/base58'); +var Base58Check = require('./encoding/base58check'); +var Hash = require('./crypto/hash'); +var Network = require('./networks'); +var Point = require('./crypto/point'); +var PrivateKey = require('./privatekey'); +var Random = require('./crypto/random'); - function BN (number, base, endian) { - if (BN.isBN(number)) { - return number; - } +var errors = require('./errors'); +var hdErrors = errors.HDPrivateKey; +var BufferUtil = require('./util/buffer'); +var JSUtil = require('./util/js'); - this.negative = 0; - this.words = null; - this.length = 0; +var MINIMUM_ENTROPY_BITS = 128; +var BITS_TO_BYTES = 1 / 8; +var MAXIMUM_ENTROPY_BITS = 512; - // Reduction context - this.red = null; - if (number !== null) { - if (base === 'le' || base === 'be') { - endian = base; - base = 10; - } +/** + * Represents an instance of an hierarchically derived private key. + * + * More info on https://github.com/bitcoin/bips/blob/master/bip-0032.mediawiki + * + * @constructor + * @param {string|Buffer|Object} arg + */ +function HDPrivateKey(arg) { + /* jshint maxcomplexity: 10 */ + if (arg instanceof HDPrivateKey) { + return arg; + } + if (!(this instanceof HDPrivateKey)) { + return new HDPrivateKey(arg); + } + if (!arg) { + return this._generateRandomly(); + } - this._init(number || 0, base || 10, endian || 'be'); + if (Network.get(arg)) { + return this._generateRandomly(arg); + } else if (_.isString(arg) || BufferUtil.isBuffer(arg)) { + if (HDPrivateKey.isValidSerialized(arg)) { + this._buildFromSerialized(arg); + } else if (JSUtil.isValidJSON(arg)) { + this._buildFromJSON(arg); + } else if (BufferUtil.isBuffer(arg) && HDPrivateKey.isValidSerialized(arg.toString())) { + this._buildFromSerialized(arg.toString()); + } else { + throw HDPrivateKey.getSerializedError(arg); } - } - if (typeof module === 'object') { - module.exports = BN; + } else if (_.isObject(arg)) { + this._buildFromObject(arg); } else { - exports.BN = BN; + throw new hdErrors.UnrecognizedArgument(arg); } +} - BN.BN = BN; - BN.wordSize = 26; - - var Buffer; - try { - Buffer = require('buffer').Buffer; - } catch (e) { +/** + * Verifies that a given path is valid. + * + * @param {string|number} arg + * @param {boolean?} hardened + * @return {boolean} + */ +HDPrivateKey.isValidPath = function(arg, hardened) { + if (_.isString(arg)) { + var indexes = HDPrivateKey._getDerivationIndexes(arg); + return indexes !== null && _.every(indexes, HDPrivateKey.isValidPath); } - BN.isBN = function isBN (num) { - if (num instanceof BN) { - return true; + if (_.isNumber(arg)) { + if (arg < HDPrivateKey.Hardened && hardened === true) { + arg += HDPrivateKey.Hardened; } + return arg >= 0 && arg < HDPrivateKey.MaxIndex; + } - return num !== null && typeof num === 'object' && - num.constructor.wordSize === BN.wordSize && Array.isArray(num.words); - }; + return false; +}; - BN.max = function max (left, right) { - if (left.cmp(right) > 0) return left; - return right; - }; +/** + * Internal function that splits a string path into a derivation index array. + * It will return null if the string path is malformed. + * It does not validate if indexes are in bounds. + * + * @param {string} path + * @return {Array} + */ +HDPrivateKey._getDerivationIndexes = function(path) { + var steps = path.split('/'); - BN.min = function min (left, right) { - if (left.cmp(right) < 0) return left; - return right; - }; + // Special cases: + if (_.includes(HDPrivateKey.RootElementAlias, path)) { + return []; + } - BN.prototype._init = function init (number, base, endian) { - if (typeof number === 'number') { - return this._initNumber(number, base, endian); - } + if (!_.includes(HDPrivateKey.RootElementAlias, steps[0])) { + return null; + } - if (typeof number === 'object') { - return this._initArray(number, base, endian); + var indexes = steps.slice(1).map(function(step) { + var isHardened = step.slice(-1) === '\''; + if (isHardened) { + step = step.slice(0, -1); } - - if (base === 'hex') { - base = 16; + if (!step || step[0] === '-') { + return NaN; } - assert(base === (base | 0) && base >= 2 && base <= 36); - - number = number.toString().replace(/\s+/g, ''); - var start = 0; - if (number[0] === '-') { - start++; + var index = +step; // cast to number + if (isHardened) { + index += HDPrivateKey.Hardened; } - if (base === 16) { - this._parseHex(number, start); - } else { - this._parseBase(number, base, start); - } + return index; + }); - if (number[0] === '-') { - this.negative = 1; - } + return _.some(indexes, isNaN) ? null : indexes; +}; - this.strip(); +/** + * WARNING: This method is deprecated. Use deriveChild or deriveNonCompliantChild instead. This is not BIP32 compliant + * + * + * Get a derived child based on a string or number. + * + * If the first argument is a string, it's parsed as the full path of + * derivation. Valid values for this argument include "m" (which returns the + * same private key), "m/0/1/40/2'/1000", where the ' quote means a hardened + * derivation. + * + * If the first argument is a number, the child with that index will be + * derived. If the second argument is truthy, the hardened version will be + * derived. See the example usage for clarification. + * + * @example + * ```javascript + * var parent = new HDPrivateKey('xprv...'); + * var child_0_1_2h = parent.derive(0).derive(1).derive(2, true); + * var copy_of_child_0_1_2h = parent.derive("m/0/1/2'"); + * assert(child_0_1_2h.xprivkey === copy_of_child_0_1_2h); + * ``` + * + * @param {string|number} arg + * @param {boolean?} hardened + */ +HDPrivateKey.prototype.derive = function(arg, hardened) { + return this.deriveNonCompliantChild(arg, hardened); +}; - if (endian !== 'le') return; +/** + * WARNING: This method will not be officially supported until v1.0.0. + * + * + * Get a derived child based on a string or number. + * + * If the first argument is a string, it's parsed as the full path of + * derivation. Valid values for this argument include "m" (which returns the + * same private key), "m/0/1/40/2'/1000", where the ' quote means a hardened + * derivation. + * + * If the first argument is a number, the child with that index will be + * derived. If the second argument is truthy, the hardened version will be + * derived. See the example usage for clarification. + * + * WARNING: The `nonCompliant` option should NOT be used, except for older implementation + * that used a derivation strategy that used a non-zero padded private key. + * + * @example + * ```javascript + * var parent = new HDPrivateKey('xprv...'); + * var child_0_1_2h = parent.deriveChild(0).deriveChild(1).deriveChild(2, true); + * var copy_of_child_0_1_2h = parent.deriveChild("m/0/1/2'"); + * assert(child_0_1_2h.xprivkey === copy_of_child_0_1_2h); + * ``` + * + * @param {string|number} arg + * @param {boolean?} hardened + */ +HDPrivateKey.prototype.deriveChild = function(arg, hardened) { + if (_.isNumber(arg)) { + return this._deriveWithNumber(arg, hardened); + } else if (_.isString(arg)) { + return this._deriveFromString(arg); + } else { + throw new hdErrors.InvalidDerivationArgument(arg); + } +}; - this._initArray(this.toArray(), base, endian); - }; +/** + * WARNING: This method will not be officially supported until v1.0.0 + * + * + * WARNING: If this is a new implementation you should NOT use this method, you should be using + * `derive` instead. + * + * This method is explicitly for use and compatibility with an implementation that + * was not compliant with BIP32 regarding the derivation algorithm. The private key + * must be 32 bytes hashing, and this implementation will use the non-zero padded + * serialization of a private key, such that it's still possible to derive the privateKey + * to recover those funds. + * + * @param {string|number} arg + * @param {boolean?} hardened + */ +HDPrivateKey.prototype.deriveNonCompliantChild = function(arg, hardened) { + if (_.isNumber(arg)) { + return this._deriveWithNumber(arg, hardened, true); + } else if (_.isString(arg)) { + return this._deriveFromString(arg, true); + } else { + throw new hdErrors.InvalidDerivationArgument(arg); + } +}; - BN.prototype._initNumber = function _initNumber (number, base, endian) { - if (number < 0) { - this.negative = 1; - number = -number; - } - if (number < 0x4000000) { - this.words = [ number & 0x3ffffff ]; - this.length = 1; - } else if (number < 0x10000000000000) { - this.words = [ - number & 0x3ffffff, - (number / 0x4000000) & 0x3ffffff - ]; - this.length = 2; - } else { - assert(number < 0x20000000000000); // 2 ^ 53 (unsafe) - this.words = [ - number & 0x3ffffff, - (number / 0x4000000) & 0x3ffffff, - 1 - ]; - this.length = 3; - } +HDPrivateKey.prototype._deriveWithNumber = function(index, hardened, nonCompliant) { + /* jshint maxstatements: 20 */ + /* jshint maxcomplexity: 10 */ + if (!HDPrivateKey.isValidPath(index, hardened)) { + throw new hdErrors.InvalidPath(index); + } - if (endian !== 'le') return; + hardened = index >= HDPrivateKey.Hardened ? true : hardened; + if (index < HDPrivateKey.Hardened && hardened === true) { + index += HDPrivateKey.Hardened; + } - // Reverse the bytes - this._initArray(this.toArray(), base, endian); - }; + var indexBuffer = BufferUtil.integerAsBuffer(index); + var data; + if (hardened && nonCompliant) { + // The private key serialization in this case will not be exactly 32 bytes and can be + // any value less, and the value is not zero-padded. + var nonZeroPadded = this.privateKey.bn.toBuffer(); + data = BufferUtil.concat([new buffer.Buffer([0]), nonZeroPadded, indexBuffer]); + } else if (hardened) { + // This will use a 32 byte zero padded serialization of the private key + var privateKeyBuffer = this.privateKey.bn.toBuffer({size: 32}); + assert(privateKeyBuffer.length === 32, 'length of private key buffer is expected to be 32 bytes'); + data = BufferUtil.concat([new buffer.Buffer([0]), privateKeyBuffer, indexBuffer]); + } else { + data = BufferUtil.concat([this.publicKey.toBuffer(), indexBuffer]); + } + var hash = Hash.sha512hmac(data, this._buffers.chainCode); + var leftPart = BN.fromBuffer(hash.slice(0, 32), { + size: 32 + }); + var chainCode = hash.slice(32, 64); - BN.prototype._initArray = function _initArray (number, base, endian) { - // Perhaps a Uint8Array - assert(typeof number.length === 'number'); - if (number.length <= 0) { - this.words = [ 0 ]; - this.length = 1; - return this; - } + var privateKey = leftPart.add(this.privateKey.toBigNumber()).umod(Point.getN()).toBuffer({ + size: 32 + }); - this.length = Math.ceil(number.length / 3); - this.words = new Array(this.length); - for (var i = 0; i < this.length; i++) { - this.words[i] = 0; - } + if (!PrivateKey.isValid(privateKey)) { + // Index at this point is already hardened, we can pass null as the hardened arg + return this._deriveWithNumber(index + 1, null, nonCompliant); + } - var j, w; - var off = 0; - if (endian === 'be') { - for (i = number.length - 1, j = 0; i >= 0; i -= 3) { - w = number[i] | (number[i - 1] << 8) | (number[i - 2] << 16); - this.words[j] |= (w << off) & 0x3ffffff; - this.words[j + 1] = (w >>> (26 - off)) & 0x3ffffff; - off += 24; - if (off >= 26) { - off -= 26; - j++; - } - } - } else if (endian === 'le') { - for (i = 0, j = 0; i < number.length; i += 3) { - w = number[i] | (number[i + 1] << 8) | (number[i + 2] << 16); - this.words[j] |= (w << off) & 0x3ffffff; - this.words[j + 1] = (w >>> (26 - off)) & 0x3ffffff; - off += 24; - if (off >= 26) { - off -= 26; - j++; - } - } - } - return this.strip(); - }; + var derived = new HDPrivateKey({ + network: this.network, + depth: this.depth + 1, + parentFingerPrint: this.fingerPrint, + childIndex: index, + chainCode: chainCode, + privateKey: privateKey + }); - function parseHex (str, start, end) { - var r = 0; - var len = Math.min(str.length, end); - for (var i = start; i < len; i++) { - var c = str.charCodeAt(i) - 48; + return derived; +}; - r <<= 4; +HDPrivateKey.prototype._deriveFromString = function(path, nonCompliant) { + if (!HDPrivateKey.isValidPath(path)) { + throw new hdErrors.InvalidPath(path); + } - // 'a' - 'f' - if (c >= 49 && c <= 54) { - r |= c - 49 + 0xa; + var indexes = HDPrivateKey._getDerivationIndexes(path); + var derived = indexes.reduce(function(prev, index) { + return prev._deriveWithNumber(index, null, nonCompliant); + }, this); - // 'A' - 'F' - } else if (c >= 17 && c <= 22) { - r |= c - 17 + 0xa; + return derived; +}; - // '0' - '9' - } else { - r |= c & 0xf; - } +/** + * Verifies that a given serialized private key in base58 with checksum format + * is valid. + * + * @param {string|Buffer} data - the serialized private key + * @param {string|Network=} network - optional, if present, checks that the + * network provided matches the network serialized. + * @return {boolean} + */ +HDPrivateKey.isValidSerialized = function(data, network) { + return !HDPrivateKey.getSerializedError(data, network); +}; + +/** + * Checks what's the error that causes the validation of a serialized private key + * in base58 with checksum to fail. + * + * @param {string|Buffer} data - the serialized private key + * @param {string|Network=} network - optional, if present, checks that the + * network provided matches the network serialized. + * @return {errors.InvalidArgument|null} + */ +HDPrivateKey.getSerializedError = function(data, network) { + /* jshint maxcomplexity: 10 */ + if (!(_.isString(data) || BufferUtil.isBuffer(data))) { + return new hdErrors.UnrecognizedArgument('Expected string or buffer'); + } + if (!Base58.validCharacters(data)) { + return new errors.InvalidB58Char('(unknown)', data); + } + try { + data = Base58Check.decode(data); + } catch (e) { + return new errors.InvalidB58Checksum(data); + } + if (data.length !== HDPrivateKey.DataLength) { + return new hdErrors.InvalidLength(data); + } + if (!_.isUndefined(network)) { + var error = HDPrivateKey._validateNetwork(data, network); + if (error) { + return error; } - return r; } + return null; +}; - BN.prototype._parseHex = function _parseHex (number, start) { - // Create possibly bigger array to ensure that it fits the number - this.length = Math.ceil((number.length - start) / 6); - this.words = new Array(this.length); - for (var i = 0; i < this.length; i++) { - this.words[i] = 0; - } +HDPrivateKey._validateNetwork = function(data, networkArg) { + var network = Network.get(networkArg); + if (!network) { + return new errors.InvalidNetworkArgument(networkArg); + } + var version = data.slice(0, 4); + if (BufferUtil.integerFromBuffer(version) !== network.xprivkey) { + return new errors.InvalidNetwork(version); + } + return null; +}; - var j, w; - // Scan 24-bit chunks and add them to the number - var off = 0; - for (i = number.length - 6, j = 0; i >= start; i -= 6) { - w = parseHex(number, i, i + 6); - this.words[j] |= (w << off) & 0x3ffffff; - // NOTE: `0x3fffff` is intentional here, 26bits max shift + 24bit hex limb - this.words[j + 1] |= w >>> (26 - off) & 0x3fffff; - off += 24; - if (off >= 26) { - off -= 26; - j++; - } - } - if (i + 6 !== start) { - w = parseHex(number, start, i + 6); - this.words[j] |= (w << off) & 0x3ffffff; - this.words[j + 1] |= w >>> (26 - off) & 0x3fffff; - } - this.strip(); - }; +HDPrivateKey.fromString = function(arg) { + $.checkArgument(_.isString(arg), 'No valid string was provided'); + return new HDPrivateKey(arg); +}; - function parseBase (str, start, end, mul) { - var r = 0; - var len = Math.min(str.length, end); - for (var i = start; i < len; i++) { - var c = str.charCodeAt(i) - 48; +HDPrivateKey.fromObject = function(arg) { + $.checkArgument(_.isObject(arg), 'No valid argument was provided'); + return new HDPrivateKey(arg); +}; - r *= mul; +HDPrivateKey.prototype._buildFromJSON = function(arg) { + return this._buildFromObject(JSON.parse(arg)); +}; - // 'a' - if (c >= 49) { - r += c - 49 + 0xa; +HDPrivateKey.prototype._buildFromObject = function(arg) { + /* jshint maxcomplexity: 12 */ + // TODO: Type validation + var buffers = { + version: arg.network ? BufferUtil.integerAsBuffer(Network.get(arg.network).xprivkey) : arg.version, + depth: _.isNumber(arg.depth) ? BufferUtil.integerAsSingleByteBuffer(arg.depth) : arg.depth, + parentFingerPrint: _.isNumber(arg.parentFingerPrint) ? BufferUtil.integerAsBuffer(arg.parentFingerPrint) : arg.parentFingerPrint, + childIndex: _.isNumber(arg.childIndex) ? BufferUtil.integerAsBuffer(arg.childIndex) : arg.childIndex, + chainCode: _.isString(arg.chainCode) ? BufferUtil.hexToBuffer(arg.chainCode) : arg.chainCode, + privateKey: (_.isString(arg.privateKey) && JSUtil.isHexa(arg.privateKey)) ? BufferUtil.hexToBuffer(arg.privateKey) : arg.privateKey, + checksum: arg.checksum ? (arg.checksum.length ? arg.checksum : BufferUtil.integerAsBuffer(arg.checksum)) : undefined + }; + return this._buildFromBuffers(buffers); +}; - // 'A' - } else if (c >= 17) { - r += c - 17 + 0xa; +HDPrivateKey.prototype._buildFromSerialized = function(arg) { + var decoded = Base58Check.decode(arg); + var buffers = { + version: decoded.slice(HDPrivateKey.VersionStart, HDPrivateKey.VersionEnd), + depth: decoded.slice(HDPrivateKey.DepthStart, HDPrivateKey.DepthEnd), + parentFingerPrint: decoded.slice(HDPrivateKey.ParentFingerPrintStart, + HDPrivateKey.ParentFingerPrintEnd), + childIndex: decoded.slice(HDPrivateKey.ChildIndexStart, HDPrivateKey.ChildIndexEnd), + chainCode: decoded.slice(HDPrivateKey.ChainCodeStart, HDPrivateKey.ChainCodeEnd), + privateKey: decoded.slice(HDPrivateKey.PrivateKeyStart, HDPrivateKey.PrivateKeyEnd), + checksum: decoded.slice(HDPrivateKey.ChecksumStart, HDPrivateKey.ChecksumEnd), + xprivkey: arg + }; + return this._buildFromBuffers(buffers); +}; - // '0' - '9' - } else { - r += c; - } - } - return r; +HDPrivateKey.prototype._generateRandomly = function(network) { + return HDPrivateKey.fromSeed(Random.getRandomBuffer(64), network); +}; + +/** + * Generate a private key from a seed, as described in BIP32 + * + * @param {string|Buffer} hexa + * @param {*} network + * @return HDPrivateKey + */ +HDPrivateKey.fromSeed = function(hexa, network) { + /* jshint maxcomplexity: 8 */ + if (JSUtil.isHexaString(hexa)) { + hexa = BufferUtil.hexToBuffer(hexa); + } + if (!Buffer.isBuffer(hexa)) { + throw new hdErrors.InvalidEntropyArgument(hexa); + } + if (hexa.length < MINIMUM_ENTROPY_BITS * BITS_TO_BYTES) { + throw new hdErrors.InvalidEntropyArgument.NotEnoughEntropy(hexa); + } + if (hexa.length > MAXIMUM_ENTROPY_BITS * BITS_TO_BYTES) { + throw new hdErrors.InvalidEntropyArgument.TooMuchEntropy(hexa); } + var hash = Hash.sha512hmac(hexa, new buffer.Buffer('Bitcoin seed')); - BN.prototype._parseBase = function _parseBase (number, base, start) { - // Initialize as zero - this.words = [ 0 ]; - this.length = 1; + return new HDPrivateKey({ + network: Network.get(network) || Network.defaultNetwork, + depth: 0, + parentFingerPrint: 0, + childIndex: 0, + privateKey: hash.slice(0, 32), + chainCode: hash.slice(32, 64) + }); +}; - // Find length of limb in base - for (var limbLen = 0, limbPow = 1; limbPow <= 0x3ffffff; limbPow *= base) { - limbLen++; - } - limbLen--; - limbPow = (limbPow / base) | 0; - var total = number.length - start; - var mod = total % limbLen; - var end = Math.min(total, total - mod) + start; - var word = 0; - for (var i = start; i < end; i += limbLen) { - word = parseBase(number, i, i + limbLen, base); +HDPrivateKey.prototype._calcHDPublicKey = function() { + if (!this._hdPublicKey) { + var HDPublicKey = require('./hdpublickey'); + this._hdPublicKey = new HDPublicKey(this); + } +}; - this.imuln(limbPow); - if (this.words[0] + word < 0x4000000) { - this.words[0] += word; - } else { - this._iaddn(word); - } - } +/** + * Receives a object with buffers in all the properties and populates the + * internal structure + * + * @param {Object} arg + * @param {buffer.Buffer} arg.version + * @param {buffer.Buffer} arg.depth + * @param {buffer.Buffer} arg.parentFingerPrint + * @param {buffer.Buffer} arg.childIndex + * @param {buffer.Buffer} arg.chainCode + * @param {buffer.Buffer} arg.privateKey + * @param {buffer.Buffer} arg.checksum + * @param {string=} arg.xprivkey - if set, don't recalculate the base58 + * representation + * @return {HDPrivateKey} this + */ +HDPrivateKey.prototype._buildFromBuffers = function(arg) { + /* jshint maxcomplexity: 8 */ + /* jshint maxstatements: 20 */ - if (mod !== 0) { - var pow = 1; - word = parseBase(number, i, number.length, base); + HDPrivateKey._validateBufferArguments(arg); - for (i = 0; i < mod; i++) { - pow *= base; - } + JSUtil.defineImmutable(this, { + _buffers: arg + }); - this.imuln(pow); - if (this.words[0] + word < 0x4000000) { - this.words[0] += word; - } else { - this._iaddn(word); - } + var sequence = [ + arg.version, arg.depth, arg.parentFingerPrint, arg.childIndex, arg.chainCode, + BufferUtil.emptyBuffer(1), arg.privateKey + ]; + var concat = buffer.Buffer.concat(sequence); + if (!arg.checksum || !arg.checksum.length) { + arg.checksum = Base58Check.checksum(concat); + } else { + if (arg.checksum.toString() !== Base58Check.checksum(concat).toString()) { + throw new errors.InvalidB58Checksum(concat); } - }; + } - BN.prototype.copy = function copy (dest) { - dest.words = new Array(this.length); - for (var i = 0; i < this.length; i++) { - dest.words[i] = this.words[i]; - } - dest.length = this.length; - dest.negative = this.negative; - dest.red = this.red; - }; + var network = Network.get(BufferUtil.integerFromBuffer(arg.version)); + var xprivkey; + xprivkey = Base58Check.encode(buffer.Buffer.concat(sequence)); + arg.xprivkey = Buffer.from(xprivkey); - BN.prototype.clone = function clone () { - var r = new BN(null); - this.copy(r); - return r; - }; + var privateKey = new PrivateKey(BN.fromBuffer(arg.privateKey), network); + var publicKey = privateKey.toPublicKey(); + var size = HDPrivateKey.ParentFingerPrintSize; + var fingerPrint = Hash.sha256ripemd160(publicKey.toBuffer()).slice(0, size); - BN.prototype._expand = function _expand (size) { - while (this.length < size) { - this.words[this.length++] = 0; - } - return this; - }; + JSUtil.defineImmutable(this, { + xprivkey: xprivkey, + network: network, + depth: BufferUtil.integerFromSingleByteBuffer(arg.depth), + privateKey: privateKey, + publicKey: publicKey, + fingerPrint: fingerPrint + }); - // Remove leading `0` from `this` - BN.prototype.strip = function strip () { - while (this.length > 1 && this.words[this.length - 1] === 0) { - this.length--; - } - return this._normSign(); - }; + this._hdPublicKey = null; - BN.prototype._normSign = function _normSign () { - // -0 = 0 - if (this.length === 1 && this.words[0] === 0) { - this.negative = 0; + Object.defineProperty(this, 'hdPublicKey', { + configurable: false, + enumerable: true, + get: function() { + this._calcHDPublicKey(); + return this._hdPublicKey; } - return this; + }); + Object.defineProperty(this, 'xpubkey', { + configurable: false, + enumerable: true, + get: function() { + this._calcHDPublicKey(); + return this._hdPublicKey.xpubkey; + } + }); + return this; +}; + +HDPrivateKey._validateBufferArguments = function(arg) { + var checkBuffer = function(name, size) { + var buff = arg[name]; + assert(BufferUtil.isBuffer(buff), name + ' argument is not a buffer'); + assert( + buff.length === size, + name + ' has not the expected size: found ' + buff.length + ', expected ' + size + ); }; + checkBuffer('version', HDPrivateKey.VersionSize); + checkBuffer('depth', HDPrivateKey.DepthSize); + checkBuffer('parentFingerPrint', HDPrivateKey.ParentFingerPrintSize); + checkBuffer('childIndex', HDPrivateKey.ChildIndexSize); + checkBuffer('chainCode', HDPrivateKey.ChainCodeSize); + checkBuffer('privateKey', HDPrivateKey.PrivateKeySize); + if (arg.checksum && arg.checksum.length) { + checkBuffer('checksum', HDPrivateKey.CheckSumSize); + } +}; - BN.prototype.inspect = function inspect () { - return (this.red ? ''; +/** + * Returns the string representation of this private key (a string starting + * with "xprv..." + * + * @return string + */ +HDPrivateKey.prototype.toString = function() { + return this.xprivkey; +}; + +/** + * Returns the console representation of this extended private key. + * @return string + */ +HDPrivateKey.prototype.inspect = function() { + return ''; +}; + +/** + * Returns a plain object with a representation of this private key. + * + * Fields include:
    + *
  • network: either 'livenet' or 'testnet' + *
  • depth: a number ranging from 0 to 255 + *
  • fingerPrint: a number ranging from 0 to 2^32-1, taken from the hash of the + *
  • associated public key + *
  • parentFingerPrint: a number ranging from 0 to 2^32-1, taken from the hash + *
  • of this parent's associated public key or zero. + *
  • childIndex: the index from which this child was derived (or zero) + *
  • chainCode: an hexa string representing a number used in the derivation + *
  • privateKey: the private key associated, in hexa representation + *
  • xprivkey: the representation of this extended private key in checksum + *
  • base58 format + *
  • checksum: the base58 checksum of xprivkey + *
+ * @return {Object} + */ +HDPrivateKey.prototype.toObject = HDPrivateKey.prototype.toJSON = function toObject() { + return { + network: Network.get(BufferUtil.integerFromBuffer(this._buffers.version), 'xprivkey').name, + depth: BufferUtil.integerFromSingleByteBuffer(this._buffers.depth), + fingerPrint: BufferUtil.integerFromBuffer(this.fingerPrint), + parentFingerPrint: BufferUtil.integerFromBuffer(this._buffers.parentFingerPrint), + childIndex: BufferUtil.integerFromBuffer(this._buffers.childIndex), + chainCode: BufferUtil.bufferToHex(this._buffers.chainCode), + privateKey: this.privateKey.toBuffer().toString('hex'), + checksum: BufferUtil.integerFromBuffer(this._buffers.checksum), + xprivkey: this.xprivkey }; +}; - /* +/** + * Build a HDPrivateKey from a buffer + * + * @param {Buffer} arg + * @return {HDPrivateKey} + */ +HDPrivateKey.fromBuffer = function(arg) { + return new HDPrivateKey(arg.toString()); +}; - var zeros = []; - var groupSizes = []; - var groupBases = []; +/** + * Returns a buffer representation of the HDPrivateKey + * + * @return {string} + */ +HDPrivateKey.prototype.toBuffer = function() { + return BufferUtil.copy(this._buffers.xprivkey); +}; - var s = ''; - var i = -1; - while (++i < BN.wordSize) { - zeros[i] = s; - s += '0'; - } - groupSizes[0] = 0; - groupSizes[1] = 0; - groupBases[0] = 0; - groupBases[1] = 0; - var base = 2 - 1; - while (++base < 36 + 1) { - var groupSize = 0; - var groupBase = 1; - while (groupBase < (1 << BN.wordSize) / base) { - groupBase *= base; - groupSize += 1; - } - groupSizes[base] = groupSize; - groupBases[base] = groupBase; - } +HDPrivateKey.DefaultDepth = 0; +HDPrivateKey.DefaultFingerprint = 0; +HDPrivateKey.DefaultChildIndex = 0; +HDPrivateKey.Hardened = 0x80000000; +HDPrivateKey.MaxIndex = 2 * HDPrivateKey.Hardened; - */ +HDPrivateKey.RootElementAlias = ['m', 'M', 'm\'', 'M\'']; - var zeros = [ - '', - '0', - '00', - '000', - '0000', - '00000', - '000000', - '0000000', - '00000000', - '000000000', - '0000000000', - '00000000000', - '000000000000', - '0000000000000', - '00000000000000', - '000000000000000', - '0000000000000000', - '00000000000000000', - '000000000000000000', - '0000000000000000000', - '00000000000000000000', - '000000000000000000000', - '0000000000000000000000', - '00000000000000000000000', - '000000000000000000000000', - '0000000000000000000000000' - ]; - - var groupSizes = [ - 0, 0, - 25, 16, 12, 11, 10, 9, 8, - 8, 7, 7, 7, 7, 6, 6, - 6, 6, 6, 6, 6, 5, 5, - 5, 5, 5, 5, 5, 5, 5, - 5, 5, 5, 5, 5, 5, 5 - ]; - - var groupBases = [ - 0, 0, - 33554432, 43046721, 16777216, 48828125, 60466176, 40353607, 16777216, - 43046721, 10000000, 19487171, 35831808, 62748517, 7529536, 11390625, - 16777216, 24137569, 34012224, 47045881, 64000000, 4084101, 5153632, - 6436343, 7962624, 9765625, 11881376, 14348907, 17210368, 20511149, - 24300000, 28629151, 33554432, 39135393, 45435424, 52521875, 60466176 - ]; - - BN.prototype.toString = function toString (base, padding) { - base = base || 10; - padding = padding | 0 || 1; - - var out; - if (base === 16 || base === 'hex') { - out = ''; - var off = 0; - var carry = 0; - for (var i = 0; i < this.length; i++) { - var w = this.words[i]; - var word = (((w << off) | carry) & 0xffffff).toString(16); - carry = (w >>> (24 - off)) & 0xffffff; - if (carry !== 0 || i !== this.length - 1) { - out = zeros[6 - word.length] + word + out; - } else { - out = word + out; - } - off += 2; - if (off >= 26) { - off -= 26; - i--; - } - } - if (carry !== 0) { - out = carry.toString(16) + out; - } - while (out.length % padding !== 0) { - out = '0' + out; - } - if (this.negative !== 0) { - out = '-' + out; - } - return out; - } - - if (base === (base | 0) && base >= 2 && base <= 36) { - // var groupSize = Math.floor(BN.wordSize * Math.LN2 / Math.log(base)); - var groupSize = groupSizes[base]; - // var groupBase = Math.pow(base, groupSize); - var groupBase = groupBases[base]; - out = ''; - var c = this.clone(); - c.negative = 0; - while (!c.isZero()) { - var r = c.modn(groupBase).toString(base); - c = c.idivn(groupBase); - - if (!c.isZero()) { - out = zeros[groupSize - r.length] + r + out; - } else { - out = r + out; - } - } - if (this.isZero()) { - out = '0' + out; - } - while (out.length % padding !== 0) { - out = '0' + out; - } - if (this.negative !== 0) { - out = '-' + out; - } - return out; - } +HDPrivateKey.VersionSize = 4; +HDPrivateKey.DepthSize = 1; +HDPrivateKey.ParentFingerPrintSize = 4; +HDPrivateKey.ChildIndexSize = 4; +HDPrivateKey.ChainCodeSize = 32; +HDPrivateKey.PrivateKeySize = 32; +HDPrivateKey.CheckSumSize = 4; - assert(false, 'Base should be between 2 and 36'); - }; +HDPrivateKey.DataLength = 78; +HDPrivateKey.SerializedByteSize = 82; - BN.prototype.toNumber = function toNumber () { - var ret = this.words[0]; - if (this.length === 2) { - ret += this.words[1] * 0x4000000; - } else if (this.length === 3 && this.words[2] === 0x01) { - // NOTE: at this stage it is known that the top bit is set - ret += 0x10000000000000 + (this.words[1] * 0x4000000); - } else if (this.length > 2) { - assert(false, 'Number can only safely store up to 53 bits'); - } - return (this.negative !== 0) ? -ret : ret; - }; +HDPrivateKey.VersionStart = 0; +HDPrivateKey.VersionEnd = HDPrivateKey.VersionStart + HDPrivateKey.VersionSize; +HDPrivateKey.DepthStart = HDPrivateKey.VersionEnd; +HDPrivateKey.DepthEnd = HDPrivateKey.DepthStart + HDPrivateKey.DepthSize; +HDPrivateKey.ParentFingerPrintStart = HDPrivateKey.DepthEnd; +HDPrivateKey.ParentFingerPrintEnd = HDPrivateKey.ParentFingerPrintStart + HDPrivateKey.ParentFingerPrintSize; +HDPrivateKey.ChildIndexStart = HDPrivateKey.ParentFingerPrintEnd; +HDPrivateKey.ChildIndexEnd = HDPrivateKey.ChildIndexStart + HDPrivateKey.ChildIndexSize; +HDPrivateKey.ChainCodeStart = HDPrivateKey.ChildIndexEnd; +HDPrivateKey.ChainCodeEnd = HDPrivateKey.ChainCodeStart + HDPrivateKey.ChainCodeSize; +HDPrivateKey.PrivateKeyStart = HDPrivateKey.ChainCodeEnd + 1; +HDPrivateKey.PrivateKeyEnd = HDPrivateKey.PrivateKeyStart + HDPrivateKey.PrivateKeySize; +HDPrivateKey.ChecksumStart = HDPrivateKey.PrivateKeyEnd; +HDPrivateKey.ChecksumEnd = HDPrivateKey.ChecksumStart + HDPrivateKey.CheckSumSize; - BN.prototype.toJSON = function toJSON () { - return this.toString(16); - }; +assert(HDPrivateKey.ChecksumEnd === HDPrivateKey.SerializedByteSize); - BN.prototype.toBuffer = function toBuffer (endian, length) { - assert(typeof Buffer !== 'undefined'); - return this.toArrayLike(Buffer, endian, length); - }; +module.exports = HDPrivateKey; - BN.prototype.toArray = function toArray (endian, length) { - return this.toArrayLike(Array, endian, length); - }; +}).call(this,require("buffer").Buffer) +},{"./crypto/bn":6,"./crypto/hash":8,"./crypto/point":9,"./crypto/random":10,"./encoding/base58":12,"./encoding/base58check":13,"./errors":17,"./hdpublickey":20,"./networks":22,"./privatekey":24,"./util/buffer":44,"./util/js":45,"./util/preconditions":46,"assert":61,"buffer":100,"lodash":156}],20:[function(require,module,exports){ +(function (Buffer){ +'use strict'; - BN.prototype.toArrayLike = function toArrayLike (ArrayType, endian, length) { - var byteLength = this.byteLength(); - var reqLength = length || Math.max(1, byteLength); - assert(byteLength <= reqLength, 'byte array longer than desired length'); - assert(reqLength > 0, 'Requested array length <= 0'); +var _ = require('lodash'); +var $ = require('./util/preconditions'); - this.strip(); - var littleEndian = endian === 'le'; - var res = new ArrayType(reqLength); +var BN = require('./crypto/bn'); +var Base58 = require('./encoding/base58'); +var Base58Check = require('./encoding/base58check'); +var Hash = require('./crypto/hash'); +var HDPrivateKey = require('./hdprivatekey'); +var Network = require('./networks'); +var Point = require('./crypto/point'); +var PublicKey = require('./publickey'); - var b, i; - var q = this.clone(); - if (!littleEndian) { - // Assume big-endian - for (i = 0; i < reqLength - byteLength; i++) { - res[i] = 0; - } +var bitcoreErrors = require('./errors'); +var errors = bitcoreErrors; +var hdErrors = bitcoreErrors.HDPublicKey; +var assert = require('assert'); - for (i = 0; !q.isZero(); i++) { - b = q.andln(0xff); - q.iushrn(8); +var JSUtil = require('./util/js'); +var BufferUtil = require('./util/buffer'); - res[reqLength - i - 1] = b; +/** + * The representation of an hierarchically derived public key. + * + * See https://github.com/bitcoin/bips/blob/master/bip-0032.mediawiki + * + * @constructor + * @param {Object|string|Buffer} arg + */ +function HDPublicKey(arg) { + /* jshint maxcomplexity: 12 */ + /* jshint maxstatements: 20 */ + if (arg instanceof HDPublicKey) { + return arg; + } + if (!(this instanceof HDPublicKey)) { + return new HDPublicKey(arg); + } + if (arg) { + if (_.isString(arg) || BufferUtil.isBuffer(arg)) { + var error = HDPublicKey.getSerializedError(arg); + if (!error) { + return this._buildFromSerialized(arg); + } else if (BufferUtil.isBuffer(arg) && !HDPublicKey.getSerializedError(arg.toString())) { + return this._buildFromSerialized(arg.toString()); + } else { + if (error instanceof hdErrors.ArgumentIsPrivateExtended) { + return new HDPrivateKey(arg).hdPublicKey; + } + throw error; } } else { - for (i = 0; !q.isZero(); i++) { - b = q.andln(0xff); - q.iushrn(8); - - res[i] = b; - } - - for (; i < reqLength; i++) { - res[i] = 0; + if (_.isObject(arg)) { + if (arg instanceof HDPrivateKey) { + return this._buildFromPrivate(arg); + } else { + return this._buildFromObject(arg); + } + } else { + throw new hdErrors.UnrecognizedArgument(arg); } } - - return res; - }; - - if (Math.clz32) { - BN.prototype._countBits = function _countBits (w) { - return 32 - Math.clz32(w); - }; } else { - BN.prototype._countBits = function _countBits (w) { - var t = w; - var r = 0; - if (t >= 0x1000) { - r += 13; - t >>>= 13; - } - if (t >= 0x40) { - r += 7; - t >>>= 7; - } - if (t >= 0x8) { - r += 4; - t >>>= 4; - } - if (t >= 0x02) { - r += 2; - t >>>= 2; - } - return r + t; - }; + throw new hdErrors.MustSupplyArgument(); } +} - BN.prototype._zeroBits = function _zeroBits (w) { - // Short-cut - if (w === 0) return 26; - - var t = w; - var r = 0; - if ((t & 0x1fff) === 0) { - r += 13; - t >>>= 13; - } - if ((t & 0x7f) === 0) { - r += 7; - t >>>= 7; - } - if ((t & 0xf) === 0) { - r += 4; - t >>>= 4; - } - if ((t & 0x3) === 0) { - r += 2; - t >>>= 2; - } - if ((t & 0x1) === 0) { - r++; - } - return r; - }; - - // Return number of used bits in a BN - BN.prototype.bitLength = function bitLength () { - var w = this.words[this.length - 1]; - var hi = this._countBits(w); - return (this.length - 1) * 26 + hi; - }; +/** + * Verifies that a given path is valid. + * + * @param {string|number} arg + * @return {boolean} + */ +HDPublicKey.isValidPath = function(arg) { + if (_.isString(arg)) { + var indexes = HDPrivateKey._getDerivationIndexes(arg); + return indexes !== null && _.every(indexes, HDPublicKey.isValidPath); + } - function toBitArray (num) { - var w = new Array(num.bitLength()); + if (_.isNumber(arg)) { + return arg >= 0 && arg < HDPublicKey.Hardened; + } - for (var bit = 0; bit < w.length; bit++) { - var off = (bit / 26) | 0; - var wbit = bit % 26; + return false; +}; - w[bit] = (num.words[off] & (1 << wbit)) >>> wbit; - } +/** + * WARNING: This method is deprecated. Use deriveChild instead. + * + * + * Get a derivated child based on a string or number. + * + * If the first argument is a string, it's parsed as the full path of + * derivation. Valid values for this argument include "m" (which returns the + * same public key), "m/0/1/40/2/1000". + * + * Note that hardened keys can't be derived from a public extended key. + * + * If the first argument is a number, the child with that index will be + * derived. See the example usage for clarification. + * + * @example + * ```javascript + * var parent = new HDPublicKey('xpub...'); + * var child_0_1_2 = parent.derive(0).derive(1).derive(2); + * var copy_of_child_0_1_2 = parent.derive("m/0/1/2"); + * assert(child_0_1_2.xprivkey === copy_of_child_0_1_2); + * ``` + * + * @param {string|number} arg + */ +HDPublicKey.prototype.derive = function(arg, hardened) { + return this.deriveChild(arg, hardened); +}; - return w; +/** + * WARNING: This method will not be officially supported until v1.0.0. + * + * + * Get a derivated child based on a string or number. + * + * If the first argument is a string, it's parsed as the full path of + * derivation. Valid values for this argument include "m" (which returns the + * same public key), "m/0/1/40/2/1000". + * + * Note that hardened keys can't be derived from a public extended key. + * + * If the first argument is a number, the child with that index will be + * derived. See the example usage for clarification. + * + * @example + * ```javascript + * var parent = new HDPublicKey('xpub...'); + * var child_0_1_2 = parent.deriveChild(0).deriveChild(1).deriveChild(2); + * var copy_of_child_0_1_2 = parent.deriveChild("m/0/1/2"); + * assert(child_0_1_2.xprivkey === copy_of_child_0_1_2); + * ``` + * + * @param {string|number} arg + */ +HDPublicKey.prototype.deriveChild = function(arg, hardened) { + if (_.isNumber(arg)) { + return this._deriveWithNumber(arg, hardened); + } else if (_.isString(arg)) { + return this._deriveFromString(arg); + } else { + throw new hdErrors.InvalidDerivationArgument(arg); } +}; - // Number of trailing zero bits - BN.prototype.zeroBits = function zeroBits () { - if (this.isZero()) return 0; - - var r = 0; - for (var i = 0; i < this.length; i++) { - var b = this._zeroBits(this.words[i]); - r += b; - if (b !== 26) break; - } - return r; - }; +HDPublicKey.prototype._deriveWithNumber = function(index, hardened) { + if (index >= HDPublicKey.Hardened || hardened) { + throw new hdErrors.InvalidIndexCantDeriveHardened(); + } + if (index < 0) { + throw new hdErrors.InvalidPath(index); + } - BN.prototype.byteLength = function byteLength () { - return Math.ceil(this.bitLength() / 8); - }; + var indexBuffer = BufferUtil.integerAsBuffer(index); + var data = BufferUtil.concat([this.publicKey.toBuffer(), indexBuffer]); + var hash = Hash.sha512hmac(data, this._buffers.chainCode); + var leftPart = BN.fromBuffer(hash.slice(0, 32), {size: 32}); + var chainCode = hash.slice(32, 64); - BN.prototype.toTwos = function toTwos (width) { - if (this.negative !== 0) { - return this.abs().inotn(width).iaddn(1); - } - return this.clone(); - }; + var publicKey; + try { + publicKey = PublicKey.fromPoint(Point.getG().mul(leftPart).add(this.publicKey.point)); + } catch (e) { + return this._deriveWithNumber(index + 1); + } - BN.prototype.fromTwos = function fromTwos (width) { - if (this.testn(width - 1)) { - return this.notn(width).iaddn(1).ineg(); - } - return this.clone(); - }; + var derived = new HDPublicKey({ + network: this.network, + depth: this.depth + 1, + parentFingerPrint: this.fingerPrint, + childIndex: index, + chainCode: chainCode, + publicKey: publicKey + }); - BN.prototype.isNeg = function isNeg () { - return this.negative !== 0; - }; + return derived; +}; - // Return negative clone of `this` - BN.prototype.neg = function neg () { - return this.clone().ineg(); - }; +HDPublicKey.prototype._deriveFromString = function(path) { + /* jshint maxcomplexity: 8 */ + if (_.includes(path, "'")) { + throw new hdErrors.InvalidIndexCantDeriveHardened(); + } else if (!HDPublicKey.isValidPath(path)) { + throw new hdErrors.InvalidPath(path); + } - BN.prototype.ineg = function ineg () { - if (!this.isZero()) { - this.negative ^= 1; - } + var indexes = HDPrivateKey._getDerivationIndexes(path); + var derived = indexes.reduce(function(prev, index) { + return prev._deriveWithNumber(index); + }, this); - return this; - }; + return derived; +}; - // Or `num` with `this` in-place - BN.prototype.iuor = function iuor (num) { - while (this.length < num.length) { - this.words[this.length++] = 0; - } +/** + * Verifies that a given serialized public key in base58 with checksum format + * is valid. + * + * @param {string|Buffer} data - the serialized public key + * @param {string|Network=} network - optional, if present, checks that the + * network provided matches the network serialized. + * @return {boolean} + */ +HDPublicKey.isValidSerialized = function(data, network) { + return _.isNull(HDPublicKey.getSerializedError(data, network)); +}; - for (var i = 0; i < num.length; i++) { - this.words[i] = this.words[i] | num.words[i]; +/** + * Checks what's the error that causes the validation of a serialized public key + * in base58 with checksum to fail. + * + * @param {string|Buffer} data - the serialized public key + * @param {string|Network=} network - optional, if present, checks that the + * network provided matches the network serialized. + * @return {errors|null} + */ +HDPublicKey.getSerializedError = function(data, network) { + /* jshint maxcomplexity: 10 */ + /* jshint maxstatements: 20 */ + if (!(_.isString(data) || BufferUtil.isBuffer(data))) { + return new hdErrors.UnrecognizedArgument('expected buffer or string'); + } + if (!Base58.validCharacters(data)) { + return new errors.InvalidB58Char('(unknown)', data); + } + try { + data = Base58Check.decode(data); + } catch (e) { + return new errors.InvalidB58Checksum(data); + } + if (data.length !== HDPublicKey.DataSize) { + return new hdErrors.InvalidLength(data); + } + if (!_.isUndefined(network)) { + var error = HDPublicKey._validateNetwork(data, network); + if (error) { + return error; } + } + var version = BufferUtil.integerFromBuffer(data.slice(0, 4)); + if (version === Network.livenet.xprivkey || version === Network.testnet.xprivkey ) { + return new hdErrors.ArgumentIsPrivateExtended(); + } + return null; +}; - return this.strip(); - }; - - BN.prototype.ior = function ior (num) { - assert((this.negative | num.negative) === 0); - return this.iuor(num); - }; +HDPublicKey._validateNetwork = function(data, networkArg) { + var network = Network.get(networkArg); + if (!network) { + return new errors.InvalidNetworkArgument(networkArg); + } + var version = data.slice(HDPublicKey.VersionStart, HDPublicKey.VersionEnd); + if (BufferUtil.integerFromBuffer(version) !== network.xpubkey) { + return new errors.InvalidNetwork(version); + } + return null; +}; - // Or `num` with `this` - BN.prototype.or = function or (num) { - if (this.length > num.length) return this.clone().ior(num); - return num.clone().ior(this); +HDPublicKey.prototype._buildFromPrivate = function (arg) { + var args = _.clone(arg._buffers); + var point = Point.getG().mul(BN.fromBuffer(args.privateKey)); + args.publicKey = Point.pointToCompressed(point); + args.version = BufferUtil.integerAsBuffer(Network.get(BufferUtil.integerFromBuffer(args.version)).xpubkey); + args.privateKey = undefined; + args.checksum = undefined; + args.xprivkey = undefined; + return this._buildFromBuffers(args); +}; + +HDPublicKey.prototype._buildFromObject = function(arg) { + /* jshint maxcomplexity: 10 */ + // TODO: Type validation + var buffers = { + version: arg.network ? BufferUtil.integerAsBuffer(Network.get(arg.network).xpubkey) : arg.version, + depth: _.isNumber(arg.depth) ? BufferUtil.integerAsSingleByteBuffer(arg.depth) : arg.depth, + parentFingerPrint: _.isNumber(arg.parentFingerPrint) ? BufferUtil.integerAsBuffer(arg.parentFingerPrint) : arg.parentFingerPrint, + childIndex: _.isNumber(arg.childIndex) ? BufferUtil.integerAsBuffer(arg.childIndex) : arg.childIndex, + chainCode: _.isString(arg.chainCode) ? BufferUtil.hexToBuffer(arg.chainCode) : arg.chainCode, + publicKey: _.isString(arg.publicKey) ? BufferUtil.hexToBuffer(arg.publicKey) : + BufferUtil.isBuffer(arg.publicKey) ? arg.publicKey : arg.publicKey.toBuffer(), + checksum: _.isNumber(arg.checksum) ? BufferUtil.integerAsBuffer(arg.checksum) : arg.checksum }; + return this._buildFromBuffers(buffers); +}; - BN.prototype.uor = function uor (num) { - if (this.length > num.length) return this.clone().iuor(num); - return num.clone().iuor(this); +HDPublicKey.prototype._buildFromSerialized = function(arg) { + var decoded = Base58Check.decode(arg); + var buffers = { + version: decoded.slice(HDPublicKey.VersionStart, HDPublicKey.VersionEnd), + depth: decoded.slice(HDPublicKey.DepthStart, HDPublicKey.DepthEnd), + parentFingerPrint: decoded.slice(HDPublicKey.ParentFingerPrintStart, + HDPublicKey.ParentFingerPrintEnd), + childIndex: decoded.slice(HDPublicKey.ChildIndexStart, HDPublicKey.ChildIndexEnd), + chainCode: decoded.slice(HDPublicKey.ChainCodeStart, HDPublicKey.ChainCodeEnd), + publicKey: decoded.slice(HDPublicKey.PublicKeyStart, HDPublicKey.PublicKeyEnd), + checksum: decoded.slice(HDPublicKey.ChecksumStart, HDPublicKey.ChecksumEnd), + xpubkey: arg }; + return this._buildFromBuffers(buffers); +}; - // And `num` with `this` in-place - BN.prototype.iuand = function iuand (num) { - // b = min-length(num, this) - var b; - if (this.length > num.length) { - b = num; - } else { - b = this; - } +/** + * Receives a object with buffers in all the properties and populates the + * internal structure + * + * @param {Object} arg + * @param {buffer.Buffer} arg.version + * @param {buffer.Buffer} arg.depth + * @param {buffer.Buffer} arg.parentFingerPrint + * @param {buffer.Buffer} arg.childIndex + * @param {buffer.Buffer} arg.chainCode + * @param {buffer.Buffer} arg.publicKey + * @param {buffer.Buffer} arg.checksum + * @param {string=} arg.xpubkey - if set, don't recalculate the base58 + * representation + * @return {HDPublicKey} this + */ +HDPublicKey.prototype._buildFromBuffers = function(arg) { + /* jshint maxcomplexity: 8 */ + /* jshint maxstatements: 20 */ - for (var i = 0; i < b.length; i++) { - this.words[i] = this.words[i] & num.words[i]; + HDPublicKey._validateBufferArguments(arg); + + JSUtil.defineImmutable(this, { + _buffers: arg + }); + + var sequence = [ + arg.version, arg.depth, arg.parentFingerPrint, arg.childIndex, arg.chainCode, + arg.publicKey + ]; + var concat = BufferUtil.concat(sequence); + var checksum = Base58Check.checksum(concat); + if (!arg.checksum || !arg.checksum.length) { + arg.checksum = checksum; + } else { + if (arg.checksum.toString('hex') !== checksum.toString('hex')) { + throw new errors.InvalidB58Checksum(concat, checksum); } + } + var network = Network.get(BufferUtil.integerFromBuffer(arg.version)); - this.length = b.length; + var xpubkey; + xpubkey = Base58Check.encode(BufferUtil.concat(sequence)); + arg.xpubkey = Buffer.from(xpubkey); - return this.strip(); - }; + var publicKey = new PublicKey(arg.publicKey, {network: network}); + var size = HDPublicKey.ParentFingerPrintSize; + var fingerPrint = Hash.sha256ripemd160(publicKey.toBuffer()).slice(0, size); - BN.prototype.iand = function iand (num) { - assert((this.negative | num.negative) === 0); - return this.iuand(num); - }; + JSUtil.defineImmutable(this, { + xpubkey: xpubkey, + network: network, + depth: BufferUtil.integerFromSingleByteBuffer(arg.depth), + publicKey: publicKey, + fingerPrint: fingerPrint + }); - // And `num` with `this` - BN.prototype.and = function and (num) { - if (this.length > num.length) return this.clone().iand(num); - return num.clone().iand(this); - }; + return this; +}; - BN.prototype.uand = function uand (num) { - if (this.length > num.length) return this.clone().iuand(num); - return num.clone().iuand(this); +HDPublicKey._validateBufferArguments = function(arg) { + var checkBuffer = function(name, size) { + var buff = arg[name]; + assert(BufferUtil.isBuffer(buff), name + ' argument is not a buffer, it\'s ' + typeof buff); + assert( + buff.length === size, + name + ' has not the expected size: found ' + buff.length + ', expected ' + size + ); }; + checkBuffer('version', HDPublicKey.VersionSize); + checkBuffer('depth', HDPublicKey.DepthSize); + checkBuffer('parentFingerPrint', HDPublicKey.ParentFingerPrintSize); + checkBuffer('childIndex', HDPublicKey.ChildIndexSize); + checkBuffer('chainCode', HDPublicKey.ChainCodeSize); + checkBuffer('publicKey', HDPublicKey.PublicKeySize); + if (arg.checksum && arg.checksum.length) { + checkBuffer('checksum', HDPublicKey.CheckSumSize); + } +}; - // Xor `num` with `this` in-place - BN.prototype.iuxor = function iuxor (num) { - // a.length > b.length - var a; - var b; - if (this.length > num.length) { - a = this; - b = num; - } else { - a = num; - b = this; - } +HDPublicKey.fromString = function(arg) { + $.checkArgument(_.isString(arg), 'No valid string was provided'); + return new HDPublicKey(arg); +}; - for (var i = 0; i < b.length; i++) { - this.words[i] = a.words[i] ^ b.words[i]; - } +HDPublicKey.fromObject = function(arg) { + $.checkArgument(_.isObject(arg), 'No valid argument was provided'); + return new HDPublicKey(arg); +}; - if (this !== a) { - for (; i < a.length; i++) { - this.words[i] = a.words[i]; - } - } +/** + * Returns the base58 checked representation of the public key + * @return {string} a string starting with "xpub..." in livenet + */ +HDPublicKey.prototype.toString = function() { + return this.xpubkey; +}; - this.length = a.length; +/** + * Returns the console representation of this extended public key. + * @return string + */ +HDPublicKey.prototype.inspect = function() { + return ''; +}; - return this.strip(); +/** + * Returns a plain JavaScript object with information to reconstruct a key. + * + * Fields are:
    + *
  • network: 'livenet' or 'testnet' + *
  • depth: a number from 0 to 255, the depth to the master extended key + *
  • fingerPrint: a number of 32 bits taken from the hash of the public key + *
  • fingerPrint: a number of 32 bits taken from the hash of this key's + *
  • parent's public key + *
  • childIndex: index with which this key was derived + *
  • chainCode: string in hexa encoding used for derivation + *
  • publicKey: string, hexa encoded, in compressed key format + *
  • checksum: BufferUtil.integerFromBuffer(this._buffers.checksum), + *
  • xpubkey: the string with the base58 representation of this extended key + *
  • checksum: the base58 checksum of xpubkey + *
+ */ +HDPublicKey.prototype.toObject = HDPublicKey.prototype.toJSON = function toObject() { + return { + network: Network.get(BufferUtil.integerFromBuffer(this._buffers.version)).name, + depth: BufferUtil.integerFromSingleByteBuffer(this._buffers.depth), + fingerPrint: BufferUtil.integerFromBuffer(this.fingerPrint), + parentFingerPrint: BufferUtil.integerFromBuffer(this._buffers.parentFingerPrint), + childIndex: BufferUtil.integerFromBuffer(this._buffers.childIndex), + chainCode: BufferUtil.bufferToHex(this._buffers.chainCode), + publicKey: this.publicKey.toString(), + checksum: BufferUtil.integerFromBuffer(this._buffers.checksum), + xpubkey: this.xpubkey }; +}; - BN.prototype.ixor = function ixor (num) { - assert((this.negative | num.negative) === 0); - return this.iuxor(num); - }; +/** + * Create a HDPublicKey from a buffer argument + * + * @param {Buffer} arg + * @return {HDPublicKey} + */ +HDPublicKey.fromBuffer = function(arg) { + return new HDPublicKey(arg); +}; - // Xor `num` with `this` - BN.prototype.xor = function xor (num) { - if (this.length > num.length) return this.clone().ixor(num); - return num.clone().ixor(this); - }; +/** + * Return a buffer representation of the xpubkey + * + * @return {Buffer} + */ +HDPublicKey.prototype.toBuffer = function() { + return BufferUtil.copy(this._buffers.xpubkey); +}; - BN.prototype.uxor = function uxor (num) { - if (this.length > num.length) return this.clone().iuxor(num); - return num.clone().iuxor(this); - }; +HDPublicKey.Hardened = 0x80000000; +HDPublicKey.RootElementAlias = ['m', 'M']; - // Not ``this`` with ``width`` bitwidth - BN.prototype.inotn = function inotn (width) { - assert(typeof width === 'number' && width >= 0); +HDPublicKey.VersionSize = 4; +HDPublicKey.DepthSize = 1; +HDPublicKey.ParentFingerPrintSize = 4; +HDPublicKey.ChildIndexSize = 4; +HDPublicKey.ChainCodeSize = 32; +HDPublicKey.PublicKeySize = 33; +HDPublicKey.CheckSumSize = 4; - var bytesNeeded = Math.ceil(width / 26) | 0; - var bitsLeft = width % 26; +HDPublicKey.DataSize = 78; +HDPublicKey.SerializedByteSize = 82; - // Extend the buffer with leading zeroes - this._expand(bytesNeeded); +HDPublicKey.VersionStart = 0; +HDPublicKey.VersionEnd = HDPublicKey.VersionStart + HDPublicKey.VersionSize; +HDPublicKey.DepthStart = HDPublicKey.VersionEnd; +HDPublicKey.DepthEnd = HDPublicKey.DepthStart + HDPublicKey.DepthSize; +HDPublicKey.ParentFingerPrintStart = HDPublicKey.DepthEnd; +HDPublicKey.ParentFingerPrintEnd = HDPublicKey.ParentFingerPrintStart + HDPublicKey.ParentFingerPrintSize; +HDPublicKey.ChildIndexStart = HDPublicKey.ParentFingerPrintEnd; +HDPublicKey.ChildIndexEnd = HDPublicKey.ChildIndexStart + HDPublicKey.ChildIndexSize; +HDPublicKey.ChainCodeStart = HDPublicKey.ChildIndexEnd; +HDPublicKey.ChainCodeEnd = HDPublicKey.ChainCodeStart + HDPublicKey.ChainCodeSize; +HDPublicKey.PublicKeyStart = HDPublicKey.ChainCodeEnd; +HDPublicKey.PublicKeyEnd = HDPublicKey.PublicKeyStart + HDPublicKey.PublicKeySize; +HDPublicKey.ChecksumStart = HDPublicKey.PublicKeyEnd; +HDPublicKey.ChecksumEnd = HDPublicKey.ChecksumStart + HDPublicKey.CheckSumSize; - if (bitsLeft > 0) { - bytesNeeded--; - } +assert(HDPublicKey.PublicKeyEnd === HDPublicKey.DataSize); +assert(HDPublicKey.ChecksumEnd === HDPublicKey.SerializedByteSize); - // Handle complete words - for (var i = 0; i < bytesNeeded; i++) { - this.words[i] = ~this.words[i] & 0x3ffffff; - } +module.exports = HDPublicKey; - // Handle the residue - if (bitsLeft > 0) { - this.words[i] = ~this.words[i] & (0x3ffffff >> (26 - bitsLeft)); - } +}).call(this,require("buffer").Buffer) +},{"./crypto/bn":6,"./crypto/hash":8,"./crypto/point":9,"./encoding/base58":12,"./encoding/base58check":13,"./errors":17,"./hdprivatekey":19,"./networks":22,"./publickey":25,"./util/buffer":44,"./util/js":45,"./util/preconditions":46,"assert":61,"buffer":100,"lodash":156}],21:[function(require,module,exports){ +(function (Buffer){ +'use strict'; - // And remove leading zeroes - return this.strip(); - }; +var _ = require('lodash'); +var PrivateKey = require('./privatekey'); +var PublicKey = require('./publickey'); +var Address = require('./address'); +var BufferWriter = require('./encoding/bufferwriter'); +var ECDSA = require('./crypto/ecdsa'); +var Signature = require('./crypto/signature'); +var sha256sha256 = require('./crypto/hash').sha256sha256; +var JSUtil = require('./util/js'); +var $ = require('./util/preconditions'); - BN.prototype.notn = function notn (width) { - return this.clone().inotn(width); - }; - // Set `bit` of `this` - BN.prototype.setn = function setn (bit, val) { - assert(typeof bit === 'number' && bit >= 0); +function Message(message) { + if (!(this instanceof Message)) { + return new Message(message); + } + $.checkArgument(_.isString(message), 'First argument should be a string'); + this.message = message; - var off = (bit / 26) | 0; - var wbit = bit % 26; + return this; +} - this._expand(off + 1); +Message.MAGIC_BYTES = new Buffer('Bitcoin Signed Message:\n'); - if (val) { - this.words[off] = this.words[off] | (1 << wbit); - } else { - this.words[off] = this.words[off] & ~(1 << wbit); - } +Message.prototype.magicHash = function magicHash() { + var prefix1 = BufferWriter.varintBufNum(Message.MAGIC_BYTES.length); + var messageBuffer = new Buffer(this.message); + var prefix2 = BufferWriter.varintBufNum(messageBuffer.length); + var buf = Buffer.concat([prefix1, Message.MAGIC_BYTES, prefix2, messageBuffer]); + var hash = sha256sha256(buf); + return hash; +}; - return this.strip(); - }; +Message.prototype._sign = function _sign(privateKey) { + $.checkArgument(privateKey instanceof PrivateKey, + 'First argument should be an instance of PrivateKey'); + var hash = this.magicHash(); + var ecdsa = new ECDSA(); + ecdsa.hashbuf = hash; + ecdsa.privkey = privateKey; + ecdsa.pubkey = privateKey.toPublicKey(); + ecdsa.signRandomK(); + ecdsa.calci(); + return ecdsa.sig; +}; - // Add `num` to `this` in-place - BN.prototype.iadd = function iadd (num) { - var r; +/** + * Will sign a message with a given bitcoin private key. + * + * @param {PrivateKey} privateKey - An instance of PrivateKey + * @returns {String} A base64 encoded compact signature + */ +Message.prototype.sign = function sign(privateKey) { + var signature = this._sign(privateKey); + return signature.toCompact().toString('base64'); +}; - // negative + positive - if (this.negative !== 0 && num.negative === 0) { - this.negative = 0; - r = this.isub(num); - this.negative ^= 1; - return this._normSign(); +Message.prototype._verify = function _verify(publicKey, signature) { + $.checkArgument(publicKey instanceof PublicKey, 'First argument should be an instance of PublicKey'); + $.checkArgument(signature instanceof Signature, 'Second argument should be an instance of Signature'); + var hash = this.magicHash(); + var verified = ECDSA.verify(hash, signature, publicKey); + if (!verified) { + this.error = 'The signature was invalid'; + } + return verified; +}; - // positive + negative - } else if (this.negative === 0 && num.negative !== 0) { - num.negative = 0; - r = this.isub(num); - num.negative = 1; - return r._normSign(); - } +/** + * Will return a boolean of the signature is valid for a given bitcoin address. + * If it isn't the specific reason is accessible via the "error" member. + * + * @param {Address|String} bitcoinAddress - A bitcoin address + * @param {String} signatureString - A base64 encoded compact signature + * @returns {Boolean} + */ +Message.prototype.verify = function verify(bitcoinAddress, signatureString) { + $.checkArgument(bitcoinAddress); + $.checkArgument(signatureString && _.isString(signatureString)); - // a.length > b.length - var a, b; - if (this.length > num.length) { - a = this; - b = num; - } else { - a = num; - b = this; - } + if (_.isString(bitcoinAddress)) { + bitcoinAddress = Address.fromString(bitcoinAddress); + } + var signature = Signature.fromCompact(new Buffer(signatureString, 'base64')); - var carry = 0; - for (var i = 0; i < b.length; i++) { - r = (a.words[i] | 0) + (b.words[i] | 0) + carry; - this.words[i] = r & 0x3ffffff; - carry = r >>> 26; - } - for (; carry !== 0 && i < a.length; i++) { - r = (a.words[i] | 0) + carry; - this.words[i] = r & 0x3ffffff; - carry = r >>> 26; - } + // recover the public key + var ecdsa = new ECDSA(); + ecdsa.hashbuf = this.magicHash(); + ecdsa.sig = signature; + var publicKey = ecdsa.toPublicKey(); - this.length = a.length; - if (carry !== 0) { - this.words[this.length] = carry; - this.length++; - // Copy the rest of the words - } else if (a !== this) { - for (; i < a.length; i++) { - this.words[i] = a.words[i]; - } - } + var signatureAddress = Address.fromPublicKey(publicKey, bitcoinAddress.network); - return this; - }; + // check that the recovered address and specified address match + if (bitcoinAddress.toString() !== signatureAddress.toString()) { + this.error = 'The signature did not match the message digest'; + return false; + } - // Add `num` to `this` - BN.prototype.add = function add (num) { - var res; - if (num.negative !== 0 && this.negative === 0) { - num.negative = 0; - res = this.sub(num); - num.negative ^= 1; - return res; - } else if (num.negative === 0 && this.negative !== 0) { - this.negative = 0; - res = num.sub(this); - this.negative = 1; - return res; - } + return this._verify(publicKey, signature); +}; - if (this.length > num.length) return this.clone().iadd(num); +/** + * Instantiate a message from a message string + * + * @param {String} str - A string of the message + * @returns {Message} A new instance of a Message + */ +Message.fromString = function(str) { + return new Message(str); +}; - return num.clone().iadd(this); +/** + * Instantiate a message from JSON + * + * @param {String} json - An JSON string or Object with keys: message + * @returns {Message} A new instance of a Message + */ +Message.fromJSON = function fromJSON(json) { + if (JSUtil.isValidJSON(json)) { + json = JSON.parse(json); + } + return new Message(json.message); +}; + +/** + * @returns {Object} A plain object with the message information + */ +Message.prototype.toObject = function toObject() { + return { + message: this.message }; +}; - // Subtract `num` from `this` in-place - BN.prototype.isub = function isub (num) { - // this - (-num) = this + num - if (num.negative !== 0) { - num.negative = 0; - var r = this.iadd(num); - num.negative = 1; - return r._normSign(); +/** + * @returns {String} A JSON representation of the message information + */ +Message.prototype.toJSON = function toJSON() { + return JSON.stringify(this.toObject()); +}; - // -this - num = -(this + num) - } else if (this.negative !== 0) { - this.negative = 0; - this.iadd(num); - this.negative = 1; - return this._normSign(); - } +/** + * Will return a the string representation of the message + * + * @returns {String} Message + */ +Message.prototype.toString = function() { + return this.message; +}; - // At this point both numbers are positive - var cmp = this.cmp(num); +/** + * Will return a string formatted for the console + * + * @returns {String} Message + */ +Message.prototype.inspect = function() { + return ''; +}; - // Optimization - zeroify - if (cmp === 0) { - this.negative = 0; - this.length = 1; - this.words[0] = 0; - return this; - } +module.exports = Message; - // a > b - var a, b; - if (cmp > 0) { - a = this; - b = num; - } else { - a = num; - b = this; - } +var Script = require('./script'); - var carry = 0; - for (var i = 0; i < b.length; i++) { - r = (a.words[i] | 0) - (b.words[i] | 0) + carry; - carry = r >> 26; - this.words[i] = r & 0x3ffffff; - } - for (; carry !== 0 && i < a.length; i++) { - r = (a.words[i] | 0) + carry; - carry = r >> 26; - this.words[i] = r & 0x3ffffff; - } +}).call(this,require("buffer").Buffer) +},{"./address":1,"./crypto/ecdsa":7,"./crypto/hash":8,"./crypto/signature":11,"./encoding/bufferwriter":15,"./privatekey":24,"./publickey":25,"./script":26,"./util/js":45,"./util/preconditions":46,"buffer":100,"lodash":156}],22:[function(require,module,exports){ +'use strict'; +var _ = require('lodash'); - // Copy rest of the words - if (carry === 0 && i < a.length && a !== this) { - for (; i < a.length; i++) { - this.words[i] = a.words[i]; - } - } +var BufferUtil = require('./util/buffer'); +var JSUtil = require('./util/js'); +var networks = []; +var networkMaps = {}; - this.length = Math.max(this.length, i); +/** + * A network is merely a map containing values that correspond to version + * numbers for each bitcoin network. Currently only supporting "livenet" + * (a.k.a. "mainnet") and "testnet". + * @constructor + */ +function Network() {} - if (a !== this) { - this.negative = 1; +Network.prototype.toString = function toString() { + return this.name; +}; + +/** + * @function + * @member Networks#get + * Retrieves the network associated with a magic number or string. + * @param {string|number|Network} arg + * @param {string|Array} keys - if set, only check if the magic number associated with this name matches + * @return Network + */ +function get(arg, keys) { + if (~networks.indexOf(arg)) { + return arg; + } + if (keys) { + if (!_.isArray(keys)) { + keys = [keys]; + } + var containsArg = function(key) { + return networks[index][key] === arg; + }; + for (var index in networks) { + if (_.some(keys, containsArg)) { + return networks[index]; + } } + return undefined; + } + if(networkMaps[arg] && networkMaps[arg].length >= 1) { + return networkMaps[arg][0]; + } else { + return networkMaps[arg]; + } +} - return this.strip(); - }; +/** + * @function + * @member Networks#add + * Will add a custom Network + * @param {Object} data + * @param {string} data.name - The name of the network + * @param {string} data.alias - The aliased name of the network + * @param {Number} data.pubkeyhash - The publickey hash prefix + * @param {Number} data.privatekey - The privatekey prefix + * @param {Number} data.scripthash - The scripthash prefix + * @param {Number} data.xpubkey - The extended public key magic + * @param {Number} data.xprivkey - The extended private key magic + * @param {Number} data.networkMagic - The network magic number + * @param {Number} data.port - The network port + * @param {Array} data.dnsSeeds - An array of dns seeds + * @return Network + */ +function addNetwork(data) { - // Subtract `num` from `this` - BN.prototype.sub = function sub (num) { - return this.clone().isub(num); - }; + var network = new Network(); - function smallMulTo (self, num, out) { - out.negative = num.negative ^ self.negative; - var len = (self.length + num.length) | 0; - out.length = len; - len = (len - 1) | 0; + JSUtil.defineImmutable(network, { + name: data.name, + alias: data.alias, + pubkeyhash: data.pubkeyhash, + privatekey: data.privatekey, + scripthash: data.scripthash, + xpubkey: data.xpubkey, + xprivkey: data.xprivkey + }); - // Peel one iteration (compiler can't do it, because of code complexity) - var a = self.words[0] | 0; - var b = num.words[0] | 0; - var r = a * b; + if (data.networkMagic) { + JSUtil.defineImmutable(network, { + networkMagic: BufferUtil.integerAsBuffer(data.networkMagic) + }); + } - var lo = r & 0x3ffffff; - var carry = (r / 0x4000000) | 0; - out.words[0] = lo; + if (data.port) { + JSUtil.defineImmutable(network, { + port: data.port + }); + } - for (var k = 1; k < len; k++) { - // Sum all words with the same `i + j = k` and accumulate `ncarry`, - // note that ncarry could be >= 0x3ffffff - var ncarry = carry >>> 26; - var rword = carry & 0x3ffffff; - var maxJ = Math.min(k, num.length - 1); - for (var j = Math.max(0, k - self.length + 1); j <= maxJ; j++) { - var i = (k - j) | 0; - a = self.words[i] | 0; - b = num.words[j] | 0; - r = a * b + rword; - ncarry += (r / 0x4000000) | 0; - rword = r & 0x3ffffff; + if (data.dnsSeeds) { + JSUtil.defineImmutable(network, { + dnsSeeds: data.dnsSeeds + }); + } + _.each(network, function(value) { + if (!_.isUndefined(value) && !_.isObject(value)) { + if(!networkMaps[value]) { + networkMaps[value] = []; } - out.words[k] = rword | 0; - carry = ncarry | 0; + networkMaps[value].push(network); } - if (carry !== 0) { - out.words[k] = carry | 0; - } else { - out.length--; + }); + + networks.push(network); + + return network; + +} + +/** + * @function + * @member Networks#remove + * Will remove a custom network + * @param {Network} network + */ +function removeNetwork(network) { + for (var i = 0; i < networks.length; i++) { + if (networks[i] === network) { + networks.splice(i, 1); + } + } + for (var key in networkMaps) { + const index = networkMaps[key].indexOf(network); + if (index >= 0) { + delete networkMaps[key][index]; } + } +} - return out.strip(); +addNetwork({ + name: 'livenet', + alias: 'mainnet', + pubkeyhash: 0x00, + privatekey: 0x80, + scripthash: 0x05, + xpubkey: 0x0488b21e, + xprivkey: 0x0488ade4, + networkMagic: 0xf9beb4d9, + port: 8333, + dnsSeeds: [ + 'seed.bitcoin.sipa.be', + 'dnsseed.bluematt.me', + 'dnsseed.bitcoin.dashjr.org', + 'seed.bitcoinstats.com', + 'seed.bitnodes.io', + 'bitseed.xf2.org' + ] +}); + +/** + * @instance + * @member Networks#livenet + */ +var livenet = get('livenet'); + +addNetwork({ + name: 'testnet', + alias: 'test', + pubkeyhash: 0x6f, + privatekey: 0xef, + scripthash: 0xc4, + xpubkey: 0x043587cf, + xprivkey: 0x04358394, + networkMagic: 0x0b110907, + port: 18333, + dnsSeeds: [ + 'testnet-seed.bitcoin.petertodd.org', + 'testnet-seed.bluematt.me', + 'testnet-seed.alexykot.me', + 'testnet-seed.bitcoin.schildbach.de' + ] +}); + +/** + * @instance + * @member Networks#testnet + */ +var testnet = get('testnet'); + +addNetwork({ + name: 'regtest', + alias: 'dev', + pubkeyhash: 0x6f, + privatekey: 0xef, + scripthash: 0xc4, + xpubkey: 0x043587cf, + xprivkey: 0x04358394, + networkMagic: 0xfabfb5da, + port: 18444, + dnsSeeds: [] +}); + +/** + * @instance + * @member Networks#testnet + */ +var regtest = get('regtest'); + +/** + * @function + * @deprecated + * @member Networks#enableRegtest + * Will enable regtest features for testnet + */ +function enableRegtest() { + testnet.regtestEnabled = true; +} + +/** + * @function + * @deprecated + * @member Networks#disableRegtest + * Will disable regtest features for testnet + */ +function disableRegtest() { + testnet.regtestEnabled = false; +} + +/** + * @namespace Networks + */ +module.exports = { + add: addNetwork, + remove: removeNetwork, + defaultNetwork: livenet, + livenet: livenet, + mainnet: livenet, + testnet: testnet, + regtest: regtest, + get: get, + enableRegtest: enableRegtest, + disableRegtest: disableRegtest +}; + +},{"./util/buffer":44,"./util/js":45,"lodash":156}],23:[function(require,module,exports){ +(function (Buffer){ +'use strict'; + +var _ = require('lodash'); +var $ = require('./util/preconditions'); +var BufferUtil = require('./util/buffer'); +var JSUtil = require('./util/js'); + +function Opcode(num) { + if (!(this instanceof Opcode)) { + return new Opcode(num); } - // TODO(indutny): it may be reasonable to omit it for users who don't need - // to work with 256-bit numbers, otherwise it gives 20% improvement for 256-bit - // multiplication (like elliptic secp256k1). - var comb10MulTo = function comb10MulTo (self, num, out) { - var a = self.words; - var b = num.words; - var o = out.words; - var c = 0; - var lo; - var mid; - var hi; - var a0 = a[0] | 0; - var al0 = a0 & 0x1fff; - var ah0 = a0 >>> 13; - var a1 = a[1] | 0; - var al1 = a1 & 0x1fff; - var ah1 = a1 >>> 13; - var a2 = a[2] | 0; - var al2 = a2 & 0x1fff; - var ah2 = a2 >>> 13; - var a3 = a[3] | 0; - var al3 = a3 & 0x1fff; - var ah3 = a3 >>> 13; - var a4 = a[4] | 0; - var al4 = a4 & 0x1fff; - var ah4 = a4 >>> 13; - var a5 = a[5] | 0; - var al5 = a5 & 0x1fff; - var ah5 = a5 >>> 13; - var a6 = a[6] | 0; - var al6 = a6 & 0x1fff; - var ah6 = a6 >>> 13; - var a7 = a[7] | 0; - var al7 = a7 & 0x1fff; - var ah7 = a7 >>> 13; - var a8 = a[8] | 0; - var al8 = a8 & 0x1fff; - var ah8 = a8 >>> 13; - var a9 = a[9] | 0; - var al9 = a9 & 0x1fff; - var ah9 = a9 >>> 13; - var b0 = b[0] | 0; - var bl0 = b0 & 0x1fff; - var bh0 = b0 >>> 13; - var b1 = b[1] | 0; - var bl1 = b1 & 0x1fff; - var bh1 = b1 >>> 13; - var b2 = b[2] | 0; - var bl2 = b2 & 0x1fff; - var bh2 = b2 >>> 13; - var b3 = b[3] | 0; - var bl3 = b3 & 0x1fff; - var bh3 = b3 >>> 13; - var b4 = b[4] | 0; - var bl4 = b4 & 0x1fff; - var bh4 = b4 >>> 13; - var b5 = b[5] | 0; - var bl5 = b5 & 0x1fff; - var bh5 = b5 >>> 13; - var b6 = b[6] | 0; - var bl6 = b6 & 0x1fff; - var bh6 = b6 >>> 13; - var b7 = b[7] | 0; - var bl7 = b7 & 0x1fff; - var bh7 = b7 >>> 13; - var b8 = b[8] | 0; - var bl8 = b8 & 0x1fff; - var bh8 = b8 >>> 13; - var b9 = b[9] | 0; - var bl9 = b9 & 0x1fff; - var bh9 = b9 >>> 13; + var value; - out.negative = self.negative ^ num.negative; - out.length = 19; - /* k = 0 */ - lo = Math.imul(al0, bl0); - mid = Math.imul(al0, bh0); - mid = (mid + Math.imul(ah0, bl0)) | 0; - hi = Math.imul(ah0, bh0); - var w0 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0; - c = (((hi + (mid >>> 13)) | 0) + (w0 >>> 26)) | 0; - w0 &= 0x3ffffff; - /* k = 1 */ - lo = Math.imul(al1, bl0); - mid = Math.imul(al1, bh0); - mid = (mid + Math.imul(ah1, bl0)) | 0; - hi = Math.imul(ah1, bh0); - lo = (lo + Math.imul(al0, bl1)) | 0; - mid = (mid + Math.imul(al0, bh1)) | 0; - mid = (mid + Math.imul(ah0, bl1)) | 0; - hi = (hi + Math.imul(ah0, bh1)) | 0; - var w1 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0; - c = (((hi + (mid >>> 13)) | 0) + (w1 >>> 26)) | 0; - w1 &= 0x3ffffff; - /* k = 2 */ - lo = Math.imul(al2, bl0); - mid = Math.imul(al2, bh0); - mid = (mid + Math.imul(ah2, bl0)) | 0; - hi = Math.imul(ah2, bh0); - lo = (lo + Math.imul(al1, bl1)) | 0; - mid = (mid + Math.imul(al1, bh1)) | 0; - mid = (mid + Math.imul(ah1, bl1)) | 0; - hi = (hi + Math.imul(ah1, bh1)) | 0; - lo = (lo + Math.imul(al0, bl2)) | 0; - mid = (mid + Math.imul(al0, bh2)) | 0; - mid = (mid + Math.imul(ah0, bl2)) | 0; - hi = (hi + Math.imul(ah0, bh2)) | 0; - var w2 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0; - c = (((hi + (mid >>> 13)) | 0) + (w2 >>> 26)) | 0; - w2 &= 0x3ffffff; - /* k = 3 */ - lo = Math.imul(al3, bl0); - mid = Math.imul(al3, bh0); - mid = (mid + Math.imul(ah3, bl0)) | 0; - hi = Math.imul(ah3, bh0); - lo = (lo + Math.imul(al2, bl1)) | 0; - mid = (mid + Math.imul(al2, bh1)) | 0; - mid = (mid + Math.imul(ah2, bl1)) | 0; - hi = (hi + Math.imul(ah2, bh1)) | 0; - lo = (lo + Math.imul(al1, bl2)) | 0; - mid = (mid + Math.imul(al1, bh2)) | 0; - mid = (mid + Math.imul(ah1, bl2)) | 0; - hi = (hi + Math.imul(ah1, bh2)) | 0; - lo = (lo + Math.imul(al0, bl3)) | 0; - mid = (mid + Math.imul(al0, bh3)) | 0; - mid = (mid + Math.imul(ah0, bl3)) | 0; - hi = (hi + Math.imul(ah0, bh3)) | 0; - var w3 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0; - c = (((hi + (mid >>> 13)) | 0) + (w3 >>> 26)) | 0; - w3 &= 0x3ffffff; - /* k = 4 */ - lo = Math.imul(al4, bl0); - mid = Math.imul(al4, bh0); - mid = (mid + Math.imul(ah4, bl0)) | 0; - hi = Math.imul(ah4, bh0); - lo = (lo + Math.imul(al3, bl1)) | 0; - mid = (mid + Math.imul(al3, bh1)) | 0; - mid = (mid + Math.imul(ah3, bl1)) | 0; - hi = (hi + Math.imul(ah3, bh1)) | 0; - lo = (lo + Math.imul(al2, bl2)) | 0; - mid = (mid + Math.imul(al2, bh2)) | 0; - mid = (mid + Math.imul(ah2, bl2)) | 0; - hi = (hi + Math.imul(ah2, bh2)) | 0; - lo = (lo + Math.imul(al1, bl3)) | 0; - mid = (mid + Math.imul(al1, bh3)) | 0; - mid = (mid + Math.imul(ah1, bl3)) | 0; - hi = (hi + Math.imul(ah1, bh3)) | 0; - lo = (lo + Math.imul(al0, bl4)) | 0; - mid = (mid + Math.imul(al0, bh4)) | 0; - mid = (mid + Math.imul(ah0, bl4)) | 0; - hi = (hi + Math.imul(ah0, bh4)) | 0; - var w4 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0; - c = (((hi + (mid >>> 13)) | 0) + (w4 >>> 26)) | 0; - w4 &= 0x3ffffff; - /* k = 5 */ - lo = Math.imul(al5, bl0); - mid = Math.imul(al5, bh0); - mid = (mid + Math.imul(ah5, bl0)) | 0; - hi = Math.imul(ah5, bh0); - lo = (lo + Math.imul(al4, bl1)) | 0; - mid = (mid + Math.imul(al4, bh1)) | 0; - mid = (mid + Math.imul(ah4, bl1)) | 0; - hi = (hi + Math.imul(ah4, bh1)) | 0; - lo = (lo + Math.imul(al3, bl2)) | 0; - mid = (mid + Math.imul(al3, bh2)) | 0; - mid = (mid + Math.imul(ah3, bl2)) | 0; - hi = (hi + Math.imul(ah3, bh2)) | 0; - lo = (lo + Math.imul(al2, bl3)) | 0; - mid = (mid + Math.imul(al2, bh3)) | 0; - mid = (mid + Math.imul(ah2, bl3)) | 0; - hi = (hi + Math.imul(ah2, bh3)) | 0; - lo = (lo + Math.imul(al1, bl4)) | 0; - mid = (mid + Math.imul(al1, bh4)) | 0; - mid = (mid + Math.imul(ah1, bl4)) | 0; - hi = (hi + Math.imul(ah1, bh4)) | 0; - lo = (lo + Math.imul(al0, bl5)) | 0; - mid = (mid + Math.imul(al0, bh5)) | 0; - mid = (mid + Math.imul(ah0, bl5)) | 0; - hi = (hi + Math.imul(ah0, bh5)) | 0; - var w5 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0; - c = (((hi + (mid >>> 13)) | 0) + (w5 >>> 26)) | 0; - w5 &= 0x3ffffff; - /* k = 6 */ - lo = Math.imul(al6, bl0); - mid = Math.imul(al6, bh0); - mid = (mid + Math.imul(ah6, bl0)) | 0; - hi = Math.imul(ah6, bh0); - lo = (lo + Math.imul(al5, bl1)) | 0; - mid = (mid + Math.imul(al5, bh1)) | 0; - mid = (mid + Math.imul(ah5, bl1)) | 0; - hi = (hi + Math.imul(ah5, bh1)) | 0; - lo = (lo + Math.imul(al4, bl2)) | 0; - mid = (mid + Math.imul(al4, bh2)) | 0; - mid = (mid + Math.imul(ah4, bl2)) | 0; - hi = (hi + Math.imul(ah4, bh2)) | 0; - lo = (lo + Math.imul(al3, bl3)) | 0; - mid = (mid + Math.imul(al3, bh3)) | 0; - mid = (mid + Math.imul(ah3, bl3)) | 0; - hi = (hi + Math.imul(ah3, bh3)) | 0; - lo = (lo + Math.imul(al2, bl4)) | 0; - mid = (mid + Math.imul(al2, bh4)) | 0; - mid = (mid + Math.imul(ah2, bl4)) | 0; - hi = (hi + Math.imul(ah2, bh4)) | 0; - lo = (lo + Math.imul(al1, bl5)) | 0; - mid = (mid + Math.imul(al1, bh5)) | 0; - mid = (mid + Math.imul(ah1, bl5)) | 0; - hi = (hi + Math.imul(ah1, bh5)) | 0; - lo = (lo + Math.imul(al0, bl6)) | 0; - mid = (mid + Math.imul(al0, bh6)) | 0; - mid = (mid + Math.imul(ah0, bl6)) | 0; - hi = (hi + Math.imul(ah0, bh6)) | 0; - var w6 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0; - c = (((hi + (mid >>> 13)) | 0) + (w6 >>> 26)) | 0; - w6 &= 0x3ffffff; - /* k = 7 */ - lo = Math.imul(al7, bl0); - mid = Math.imul(al7, bh0); - mid = (mid + Math.imul(ah7, bl0)) | 0; - hi = Math.imul(ah7, bh0); - lo = (lo + Math.imul(al6, bl1)) | 0; - mid = (mid + Math.imul(al6, bh1)) | 0; - mid = (mid + Math.imul(ah6, bl1)) | 0; - hi = (hi + Math.imul(ah6, bh1)) | 0; - lo = (lo + Math.imul(al5, bl2)) | 0; - mid = (mid + Math.imul(al5, bh2)) | 0; - mid = (mid + Math.imul(ah5, bl2)) | 0; - hi = (hi + Math.imul(ah5, bh2)) | 0; - lo = (lo + Math.imul(al4, bl3)) | 0; - mid = (mid + Math.imul(al4, bh3)) | 0; - mid = (mid + Math.imul(ah4, bl3)) | 0; - hi = (hi + Math.imul(ah4, bh3)) | 0; - lo = (lo + Math.imul(al3, bl4)) | 0; - mid = (mid + Math.imul(al3, bh4)) | 0; - mid = (mid + Math.imul(ah3, bl4)) | 0; - hi = (hi + Math.imul(ah3, bh4)) | 0; - lo = (lo + Math.imul(al2, bl5)) | 0; - mid = (mid + Math.imul(al2, bh5)) | 0; - mid = (mid + Math.imul(ah2, bl5)) | 0; - hi = (hi + Math.imul(ah2, bh5)) | 0; - lo = (lo + Math.imul(al1, bl6)) | 0; - mid = (mid + Math.imul(al1, bh6)) | 0; - mid = (mid + Math.imul(ah1, bl6)) | 0; - hi = (hi + Math.imul(ah1, bh6)) | 0; - lo = (lo + Math.imul(al0, bl7)) | 0; - mid = (mid + Math.imul(al0, bh7)) | 0; - mid = (mid + Math.imul(ah0, bl7)) | 0; - hi = (hi + Math.imul(ah0, bh7)) | 0; - var w7 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0; - c = (((hi + (mid >>> 13)) | 0) + (w7 >>> 26)) | 0; - w7 &= 0x3ffffff; - /* k = 8 */ - lo = Math.imul(al8, bl0); - mid = Math.imul(al8, bh0); - mid = (mid + Math.imul(ah8, bl0)) | 0; - hi = Math.imul(ah8, bh0); - lo = (lo + Math.imul(al7, bl1)) | 0; - mid = (mid + Math.imul(al7, bh1)) | 0; - mid = (mid + Math.imul(ah7, bl1)) | 0; - hi = (hi + Math.imul(ah7, bh1)) | 0; - lo = (lo + Math.imul(al6, bl2)) | 0; - mid = (mid + Math.imul(al6, bh2)) | 0; - mid = (mid + Math.imul(ah6, bl2)) | 0; - hi = (hi + Math.imul(ah6, bh2)) | 0; - lo = (lo + Math.imul(al5, bl3)) | 0; - mid = (mid + Math.imul(al5, bh3)) | 0; - mid = (mid + Math.imul(ah5, bl3)) | 0; - hi = (hi + Math.imul(ah5, bh3)) | 0; - lo = (lo + Math.imul(al4, bl4)) | 0; - mid = (mid + Math.imul(al4, bh4)) | 0; - mid = (mid + Math.imul(ah4, bl4)) | 0; - hi = (hi + Math.imul(ah4, bh4)) | 0; - lo = (lo + Math.imul(al3, bl5)) | 0; - mid = (mid + Math.imul(al3, bh5)) | 0; - mid = (mid + Math.imul(ah3, bl5)) | 0; - hi = (hi + Math.imul(ah3, bh5)) | 0; - lo = (lo + Math.imul(al2, bl6)) | 0; - mid = (mid + Math.imul(al2, bh6)) | 0; - mid = (mid + Math.imul(ah2, bl6)) | 0; - hi = (hi + Math.imul(ah2, bh6)) | 0; - lo = (lo + Math.imul(al1, bl7)) | 0; - mid = (mid + Math.imul(al1, bh7)) | 0; - mid = (mid + Math.imul(ah1, bl7)) | 0; - hi = (hi + Math.imul(ah1, bh7)) | 0; - lo = (lo + Math.imul(al0, bl8)) | 0; - mid = (mid + Math.imul(al0, bh8)) | 0; - mid = (mid + Math.imul(ah0, bl8)) | 0; - hi = (hi + Math.imul(ah0, bh8)) | 0; - var w8 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0; - c = (((hi + (mid >>> 13)) | 0) + (w8 >>> 26)) | 0; - w8 &= 0x3ffffff; - /* k = 9 */ - lo = Math.imul(al9, bl0); - mid = Math.imul(al9, bh0); - mid = (mid + Math.imul(ah9, bl0)) | 0; - hi = Math.imul(ah9, bh0); - lo = (lo + Math.imul(al8, bl1)) | 0; - mid = (mid + Math.imul(al8, bh1)) | 0; - mid = (mid + Math.imul(ah8, bl1)) | 0; - hi = (hi + Math.imul(ah8, bh1)) | 0; - lo = (lo + Math.imul(al7, bl2)) | 0; - mid = (mid + Math.imul(al7, bh2)) | 0; - mid = (mid + Math.imul(ah7, bl2)) | 0; - hi = (hi + Math.imul(ah7, bh2)) | 0; - lo = (lo + Math.imul(al6, bl3)) | 0; - mid = (mid + Math.imul(al6, bh3)) | 0; - mid = (mid + Math.imul(ah6, bl3)) | 0; - hi = (hi + Math.imul(ah6, bh3)) | 0; - lo = (lo + Math.imul(al5, bl4)) | 0; - mid = (mid + Math.imul(al5, bh4)) | 0; - mid = (mid + Math.imul(ah5, bl4)) | 0; - hi = (hi + Math.imul(ah5, bh4)) | 0; - lo = (lo + Math.imul(al4, bl5)) | 0; - mid = (mid + Math.imul(al4, bh5)) | 0; - mid = (mid + Math.imul(ah4, bl5)) | 0; - hi = (hi + Math.imul(ah4, bh5)) | 0; - lo = (lo + Math.imul(al3, bl6)) | 0; - mid = (mid + Math.imul(al3, bh6)) | 0; - mid = (mid + Math.imul(ah3, bl6)) | 0; - hi = (hi + Math.imul(ah3, bh6)) | 0; - lo = (lo + Math.imul(al2, bl7)) | 0; - mid = (mid + Math.imul(al2, bh7)) | 0; - mid = (mid + Math.imul(ah2, bl7)) | 0; - hi = (hi + Math.imul(ah2, bh7)) | 0; - lo = (lo + Math.imul(al1, bl8)) | 0; - mid = (mid + Math.imul(al1, bh8)) | 0; - mid = (mid + Math.imul(ah1, bl8)) | 0; - hi = (hi + Math.imul(ah1, bh8)) | 0; - lo = (lo + Math.imul(al0, bl9)) | 0; - mid = (mid + Math.imul(al0, bh9)) | 0; - mid = (mid + Math.imul(ah0, bl9)) | 0; - hi = (hi + Math.imul(ah0, bh9)) | 0; - var w9 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0; - c = (((hi + (mid >>> 13)) | 0) + (w9 >>> 26)) | 0; - w9 &= 0x3ffffff; - /* k = 10 */ - lo = Math.imul(al9, bl1); - mid = Math.imul(al9, bh1); - mid = (mid + Math.imul(ah9, bl1)) | 0; - hi = Math.imul(ah9, bh1); - lo = (lo + Math.imul(al8, bl2)) | 0; - mid = (mid + Math.imul(al8, bh2)) | 0; - mid = (mid + Math.imul(ah8, bl2)) | 0; - hi = (hi + Math.imul(ah8, bh2)) | 0; - lo = (lo + Math.imul(al7, bl3)) | 0; - mid = (mid + Math.imul(al7, bh3)) | 0; - mid = (mid + Math.imul(ah7, bl3)) | 0; - hi = (hi + Math.imul(ah7, bh3)) | 0; - lo = (lo + Math.imul(al6, bl4)) | 0; - mid = (mid + Math.imul(al6, bh4)) | 0; - mid = (mid + Math.imul(ah6, bl4)) | 0; - hi = (hi + Math.imul(ah6, bh4)) | 0; - lo = (lo + Math.imul(al5, bl5)) | 0; - mid = (mid + Math.imul(al5, bh5)) | 0; - mid = (mid + Math.imul(ah5, bl5)) | 0; - hi = (hi + Math.imul(ah5, bh5)) | 0; - lo = (lo + Math.imul(al4, bl6)) | 0; - mid = (mid + Math.imul(al4, bh6)) | 0; - mid = (mid + Math.imul(ah4, bl6)) | 0; - hi = (hi + Math.imul(ah4, bh6)) | 0; - lo = (lo + Math.imul(al3, bl7)) | 0; - mid = (mid + Math.imul(al3, bh7)) | 0; - mid = (mid + Math.imul(ah3, bl7)) | 0; - hi = (hi + Math.imul(ah3, bh7)) | 0; - lo = (lo + Math.imul(al2, bl8)) | 0; - mid = (mid + Math.imul(al2, bh8)) | 0; - mid = (mid + Math.imul(ah2, bl8)) | 0; - hi = (hi + Math.imul(ah2, bh8)) | 0; - lo = (lo + Math.imul(al1, bl9)) | 0; - mid = (mid + Math.imul(al1, bh9)) | 0; - mid = (mid + Math.imul(ah1, bl9)) | 0; - hi = (hi + Math.imul(ah1, bh9)) | 0; - var w10 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0; - c = (((hi + (mid >>> 13)) | 0) + (w10 >>> 26)) | 0; - w10 &= 0x3ffffff; - /* k = 11 */ - lo = Math.imul(al9, bl2); - mid = Math.imul(al9, bh2); - mid = (mid + Math.imul(ah9, bl2)) | 0; - hi = Math.imul(ah9, bh2); - lo = (lo + Math.imul(al8, bl3)) | 0; - mid = (mid + Math.imul(al8, bh3)) | 0; - mid = (mid + Math.imul(ah8, bl3)) | 0; - hi = (hi + Math.imul(ah8, bh3)) | 0; - lo = (lo + Math.imul(al7, bl4)) | 0; - mid = (mid + Math.imul(al7, bh4)) | 0; - mid = (mid + Math.imul(ah7, bl4)) | 0; - hi = (hi + Math.imul(ah7, bh4)) | 0; - lo = (lo + Math.imul(al6, bl5)) | 0; - mid = (mid + Math.imul(al6, bh5)) | 0; - mid = (mid + Math.imul(ah6, bl5)) | 0; - hi = (hi + Math.imul(ah6, bh5)) | 0; - lo = (lo + Math.imul(al5, bl6)) | 0; - mid = (mid + Math.imul(al5, bh6)) | 0; - mid = (mid + Math.imul(ah5, bl6)) | 0; - hi = (hi + Math.imul(ah5, bh6)) | 0; - lo = (lo + Math.imul(al4, bl7)) | 0; - mid = (mid + Math.imul(al4, bh7)) | 0; - mid = (mid + Math.imul(ah4, bl7)) | 0; - hi = (hi + Math.imul(ah4, bh7)) | 0; - lo = (lo + Math.imul(al3, bl8)) | 0; - mid = (mid + Math.imul(al3, bh8)) | 0; - mid = (mid + Math.imul(ah3, bl8)) | 0; - hi = (hi + Math.imul(ah3, bh8)) | 0; - lo = (lo + Math.imul(al2, bl9)) | 0; - mid = (mid + Math.imul(al2, bh9)) | 0; - mid = (mid + Math.imul(ah2, bl9)) | 0; - hi = (hi + Math.imul(ah2, bh9)) | 0; - var w11 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0; - c = (((hi + (mid >>> 13)) | 0) + (w11 >>> 26)) | 0; - w11 &= 0x3ffffff; - /* k = 12 */ - lo = Math.imul(al9, bl3); - mid = Math.imul(al9, bh3); - mid = (mid + Math.imul(ah9, bl3)) | 0; - hi = Math.imul(ah9, bh3); - lo = (lo + Math.imul(al8, bl4)) | 0; - mid = (mid + Math.imul(al8, bh4)) | 0; - mid = (mid + Math.imul(ah8, bl4)) | 0; - hi = (hi + Math.imul(ah8, bh4)) | 0; - lo = (lo + Math.imul(al7, bl5)) | 0; - mid = (mid + Math.imul(al7, bh5)) | 0; - mid = (mid + Math.imul(ah7, bl5)) | 0; - hi = (hi + Math.imul(ah7, bh5)) | 0; - lo = (lo + Math.imul(al6, bl6)) | 0; - mid = (mid + Math.imul(al6, bh6)) | 0; - mid = (mid + Math.imul(ah6, bl6)) | 0; - hi = (hi + Math.imul(ah6, bh6)) | 0; - lo = (lo + Math.imul(al5, bl7)) | 0; - mid = (mid + Math.imul(al5, bh7)) | 0; - mid = (mid + Math.imul(ah5, bl7)) | 0; - hi = (hi + Math.imul(ah5, bh7)) | 0; - lo = (lo + Math.imul(al4, bl8)) | 0; - mid = (mid + Math.imul(al4, bh8)) | 0; - mid = (mid + Math.imul(ah4, bl8)) | 0; - hi = (hi + Math.imul(ah4, bh8)) | 0; - lo = (lo + Math.imul(al3, bl9)) | 0; - mid = (mid + Math.imul(al3, bh9)) | 0; - mid = (mid + Math.imul(ah3, bl9)) | 0; - hi = (hi + Math.imul(ah3, bh9)) | 0; - var w12 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0; - c = (((hi + (mid >>> 13)) | 0) + (w12 >>> 26)) | 0; - w12 &= 0x3ffffff; - /* k = 13 */ - lo = Math.imul(al9, bl4); - mid = Math.imul(al9, bh4); - mid = (mid + Math.imul(ah9, bl4)) | 0; - hi = Math.imul(ah9, bh4); - lo = (lo + Math.imul(al8, bl5)) | 0; - mid = (mid + Math.imul(al8, bh5)) | 0; - mid = (mid + Math.imul(ah8, bl5)) | 0; - hi = (hi + Math.imul(ah8, bh5)) | 0; - lo = (lo + Math.imul(al7, bl6)) | 0; - mid = (mid + Math.imul(al7, bh6)) | 0; - mid = (mid + Math.imul(ah7, bl6)) | 0; - hi = (hi + Math.imul(ah7, bh6)) | 0; - lo = (lo + Math.imul(al6, bl7)) | 0; - mid = (mid + Math.imul(al6, bh7)) | 0; - mid = (mid + Math.imul(ah6, bl7)) | 0; - hi = (hi + Math.imul(ah6, bh7)) | 0; - lo = (lo + Math.imul(al5, bl8)) | 0; - mid = (mid + Math.imul(al5, bh8)) | 0; - mid = (mid + Math.imul(ah5, bl8)) | 0; - hi = (hi + Math.imul(ah5, bh8)) | 0; - lo = (lo + Math.imul(al4, bl9)) | 0; - mid = (mid + Math.imul(al4, bh9)) | 0; - mid = (mid + Math.imul(ah4, bl9)) | 0; - hi = (hi + Math.imul(ah4, bh9)) | 0; - var w13 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0; - c = (((hi + (mid >>> 13)) | 0) + (w13 >>> 26)) | 0; - w13 &= 0x3ffffff; - /* k = 14 */ - lo = Math.imul(al9, bl5); - mid = Math.imul(al9, bh5); - mid = (mid + Math.imul(ah9, bl5)) | 0; - hi = Math.imul(ah9, bh5); - lo = (lo + Math.imul(al8, bl6)) | 0; - mid = (mid + Math.imul(al8, bh6)) | 0; - mid = (mid + Math.imul(ah8, bl6)) | 0; - hi = (hi + Math.imul(ah8, bh6)) | 0; - lo = (lo + Math.imul(al7, bl7)) | 0; - mid = (mid + Math.imul(al7, bh7)) | 0; - mid = (mid + Math.imul(ah7, bl7)) | 0; - hi = (hi + Math.imul(ah7, bh7)) | 0; - lo = (lo + Math.imul(al6, bl8)) | 0; - mid = (mid + Math.imul(al6, bh8)) | 0; - mid = (mid + Math.imul(ah6, bl8)) | 0; - hi = (hi + Math.imul(ah6, bh8)) | 0; - lo = (lo + Math.imul(al5, bl9)) | 0; - mid = (mid + Math.imul(al5, bh9)) | 0; - mid = (mid + Math.imul(ah5, bl9)) | 0; - hi = (hi + Math.imul(ah5, bh9)) | 0; - var w14 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0; - c = (((hi + (mid >>> 13)) | 0) + (w14 >>> 26)) | 0; - w14 &= 0x3ffffff; - /* k = 15 */ - lo = Math.imul(al9, bl6); - mid = Math.imul(al9, bh6); - mid = (mid + Math.imul(ah9, bl6)) | 0; - hi = Math.imul(ah9, bh6); - lo = (lo + Math.imul(al8, bl7)) | 0; - mid = (mid + Math.imul(al8, bh7)) | 0; - mid = (mid + Math.imul(ah8, bl7)) | 0; - hi = (hi + Math.imul(ah8, bh7)) | 0; - lo = (lo + Math.imul(al7, bl8)) | 0; - mid = (mid + Math.imul(al7, bh8)) | 0; - mid = (mid + Math.imul(ah7, bl8)) | 0; - hi = (hi + Math.imul(ah7, bh8)) | 0; - lo = (lo + Math.imul(al6, bl9)) | 0; - mid = (mid + Math.imul(al6, bh9)) | 0; - mid = (mid + Math.imul(ah6, bl9)) | 0; - hi = (hi + Math.imul(ah6, bh9)) | 0; - var w15 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0; - c = (((hi + (mid >>> 13)) | 0) + (w15 >>> 26)) | 0; - w15 &= 0x3ffffff; - /* k = 16 */ - lo = Math.imul(al9, bl7); - mid = Math.imul(al9, bh7); - mid = (mid + Math.imul(ah9, bl7)) | 0; - hi = Math.imul(ah9, bh7); - lo = (lo + Math.imul(al8, bl8)) | 0; - mid = (mid + Math.imul(al8, bh8)) | 0; - mid = (mid + Math.imul(ah8, bl8)) | 0; - hi = (hi + Math.imul(ah8, bh8)) | 0; - lo = (lo + Math.imul(al7, bl9)) | 0; - mid = (mid + Math.imul(al7, bh9)) | 0; - mid = (mid + Math.imul(ah7, bl9)) | 0; - hi = (hi + Math.imul(ah7, bh9)) | 0; - var w16 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0; - c = (((hi + (mid >>> 13)) | 0) + (w16 >>> 26)) | 0; - w16 &= 0x3ffffff; - /* k = 17 */ - lo = Math.imul(al9, bl8); - mid = Math.imul(al9, bh8); - mid = (mid + Math.imul(ah9, bl8)) | 0; - hi = Math.imul(ah9, bh8); - lo = (lo + Math.imul(al8, bl9)) | 0; - mid = (mid + Math.imul(al8, bh9)) | 0; - mid = (mid + Math.imul(ah8, bl9)) | 0; - hi = (hi + Math.imul(ah8, bh9)) | 0; - var w17 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0; - c = (((hi + (mid >>> 13)) | 0) + (w17 >>> 26)) | 0; - w17 &= 0x3ffffff; - /* k = 18 */ - lo = Math.imul(al9, bl9); - mid = Math.imul(al9, bh9); - mid = (mid + Math.imul(ah9, bl9)) | 0; - hi = Math.imul(ah9, bh9); - var w18 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0; - c = (((hi + (mid >>> 13)) | 0) + (w18 >>> 26)) | 0; - w18 &= 0x3ffffff; - o[0] = w0; - o[1] = w1; - o[2] = w2; - o[3] = w3; - o[4] = w4; - o[5] = w5; - o[6] = w6; - o[7] = w7; - o[8] = w8; - o[9] = w9; - o[10] = w10; - o[11] = w11; - o[12] = w12; - o[13] = w13; - o[14] = w14; - o[15] = w15; - o[16] = w16; - o[17] = w17; - o[18] = w18; - if (c !== 0) { - o[19] = c; - out.length++; - } - return out; - }; - - // Polyfill comb - if (!Math.imul) { - comb10MulTo = smallMulTo; + if (_.isNumber(num)) { + value = num; + } else if (_.isString(num)) { + value = Opcode.map[num]; + } else { + throw new TypeError('Unrecognized num type: "' + typeof(num) + '" for Opcode'); } - function bigMulTo (self, num, out) { - out.negative = num.negative ^ self.negative; - out.length = self.length + num.length; - - var carry = 0; - var hncarry = 0; - for (var k = 0; k < out.length - 1; k++) { - // Sum all words with the same `i + j = k` and accumulate `ncarry`, - // note that ncarry could be >= 0x3ffffff - var ncarry = hncarry; - hncarry = 0; - var rword = carry & 0x3ffffff; - var maxJ = Math.min(k, num.length - 1); - for (var j = Math.max(0, k - self.length + 1); j <= maxJ; j++) { - var i = k - j; - var a = self.words[i] | 0; - var b = num.words[j] | 0; - var r = a * b; + JSUtil.defineImmutable(this, { + num: value + }); - var lo = r & 0x3ffffff; - ncarry = (ncarry + ((r / 0x4000000) | 0)) | 0; - lo = (lo + rword) | 0; - rword = lo & 0x3ffffff; - ncarry = (ncarry + (lo >>> 26)) | 0; + return this; +} - hncarry += ncarry >>> 26; - ncarry &= 0x3ffffff; - } - out.words[k] = rword; - carry = ncarry; - ncarry = hncarry; - } - if (carry !== 0) { - out.words[k] = carry; - } else { - out.length--; - } +Opcode.fromBuffer = function(buf) { + $.checkArgument(BufferUtil.isBuffer(buf)); + return new Opcode(Number('0x' + buf.toString('hex'))); +}; - return out.strip(); - } +Opcode.fromNumber = function(num) { + $.checkArgument(_.isNumber(num)); + return new Opcode(num); +}; - function jumboMulTo (self, num, out) { - var fftm = new FFTM(); - return fftm.mulp(self, num, out); +Opcode.fromString = function(str) { + $.checkArgument(_.isString(str)); + var value = Opcode.map[str]; + if (typeof value === 'undefined') { + throw new TypeError('Invalid opcodestr'); } + return new Opcode(value); +}; - BN.prototype.mulTo = function mulTo (num, out) { - var res; - var len = this.length + num.length; - if (this.length === 10 && num.length === 10) { - res = comb10MulTo(this, num, out); - } else if (len < 63) { - res = smallMulTo(this, num, out); - } else if (len < 1024) { - res = bigMulTo(this, num, out); - } else { - res = jumboMulTo(this, num, out); - } +Opcode.prototype.toHex = function() { + return this.num.toString(16); +}; - return res; - }; +Opcode.prototype.toBuffer = function() { + return Buffer.from(this.toHex(), 'hex'); +}; - // Cooley-Tukey algorithm for FFT - // slightly revisited to rely on looping instead of recursion +Opcode.prototype.toNumber = function() { + return this.num; +}; - function FFTM (x, y) { - this.x = x; - this.y = y; +Opcode.prototype.toString = function() { + var str = Opcode.reverseMap[this.num]; + if (typeof str === 'undefined') { + throw new Error('Opcode does not have a string representation'); } + return str; +}; - FFTM.prototype.makeRBT = function makeRBT (N) { - var t = new Array(N); - var l = BN.prototype._countBits(N) - 1; - for (var i = 0; i < N; i++) { - t[i] = this.revBin(i, l, N); - } - - return t; - }; - - // Returns binary-reversed representation of `x` - FFTM.prototype.revBin = function revBin (x, l, N) { - if (x === 0 || x === N - 1) return x; +Opcode.smallInt = function(n) { + $.checkArgument(_.isNumber(n), 'Invalid Argument: n should be number'); + $.checkArgument(n >= 0 && n <= 16, 'Invalid Argument: n must be between 0 and 16'); + if (n === 0) { + return Opcode('OP_0'); + } + return new Opcode(Opcode.map.OP_1 + n - 1); +}; - var rb = 0; - for (var i = 0; i < l; i++) { - rb |= (x & 1) << (l - i - 1); - x >>= 1; - } +Opcode.map = { + // push value + OP_FALSE: 0, + OP_0: 0, + OP_PUSHDATA1: 76, + OP_PUSHDATA2: 77, + OP_PUSHDATA4: 78, + OP_1NEGATE: 79, + OP_RESERVED: 80, + OP_TRUE: 81, + OP_1: 81, + OP_2: 82, + OP_3: 83, + OP_4: 84, + OP_5: 85, + OP_6: 86, + OP_7: 87, + OP_8: 88, + OP_9: 89, + OP_10: 90, + OP_11: 91, + OP_12: 92, + OP_13: 93, + OP_14: 94, + OP_15: 95, + OP_16: 96, - return rb; - }; + // control + OP_NOP: 97, + OP_VER: 98, + OP_IF: 99, + OP_NOTIF: 100, + OP_VERIF: 101, + OP_VERNOTIF: 102, + OP_ELSE: 103, + OP_ENDIF: 104, + OP_VERIFY: 105, + OP_RETURN: 106, - // Performs "tweedling" phase, therefore 'emulating' - // behaviour of the recursive algorithm - FFTM.prototype.permute = function permute (rbt, rws, iws, rtws, itws, N) { - for (var i = 0; i < N; i++) { - rtws[i] = rws[rbt[i]]; - itws[i] = iws[rbt[i]]; - } - }; + // stack ops + OP_TOALTSTACK: 107, + OP_FROMALTSTACK: 108, + OP_2DROP: 109, + OP_2DUP: 110, + OP_3DUP: 111, + OP_2OVER: 112, + OP_2ROT: 113, + OP_2SWAP: 114, + OP_IFDUP: 115, + OP_DEPTH: 116, + OP_DROP: 117, + OP_DUP: 118, + OP_NIP: 119, + OP_OVER: 120, + OP_PICK: 121, + OP_ROLL: 122, + OP_ROT: 123, + OP_SWAP: 124, + OP_TUCK: 125, - FFTM.prototype.transform = function transform (rws, iws, rtws, itws, N, rbt) { - this.permute(rbt, rws, iws, rtws, itws, N); + // splice ops + OP_CAT: 126, + OP_SUBSTR: 127, + OP_LEFT: 128, + OP_RIGHT: 129, + OP_SIZE: 130, - for (var s = 1; s < N; s <<= 1) { - var l = s << 1; + // bit logic + OP_INVERT: 131, + OP_AND: 132, + OP_OR: 133, + OP_XOR: 134, + OP_EQUAL: 135, + OP_EQUALVERIFY: 136, + OP_RESERVED1: 137, + OP_RESERVED2: 138, - var rtwdf = Math.cos(2 * Math.PI / l); - var itwdf = Math.sin(2 * Math.PI / l); + // numeric + OP_1ADD: 139, + OP_1SUB: 140, + OP_2MUL: 141, + OP_2DIV: 142, + OP_NEGATE: 143, + OP_ABS: 144, + OP_NOT: 145, + OP_0NOTEQUAL: 146, - for (var p = 0; p < N; p += l) { - var rtwdf_ = rtwdf; - var itwdf_ = itwdf; + OP_ADD: 147, + OP_SUB: 148, + OP_MUL: 149, + OP_DIV: 150, + OP_MOD: 151, + OP_LSHIFT: 152, + OP_RSHIFT: 153, - for (var j = 0; j < s; j++) { - var re = rtws[p + j]; - var ie = itws[p + j]; + OP_BOOLAND: 154, + OP_BOOLOR: 155, + OP_NUMEQUAL: 156, + OP_NUMEQUALVERIFY: 157, + OP_NUMNOTEQUAL: 158, + OP_LESSTHAN: 159, + OP_GREATERTHAN: 160, + OP_LESSTHANOREQUAL: 161, + OP_GREATERTHANOREQUAL: 162, + OP_MIN: 163, + OP_MAX: 164, - var ro = rtws[p + j + s]; - var io = itws[p + j + s]; + OP_WITHIN: 165, - var rx = rtwdf_ * ro - itwdf_ * io; + // crypto + OP_RIPEMD160: 166, + OP_SHA1: 167, + OP_SHA256: 168, + OP_HASH160: 169, + OP_HASH256: 170, + OP_CODESEPARATOR: 171, + OP_CHECKSIG: 172, + OP_CHECKSIGVERIFY: 173, + OP_CHECKMULTISIG: 174, + OP_CHECKMULTISIGVERIFY: 175, - io = rtwdf_ * io + itwdf_ * ro; - ro = rx; + OP_CHECKLOCKTIMEVERIFY: 177, + OP_CHECKSEQUENCEVERIFY: 178, - rtws[p + j] = re + ro; - itws[p + j] = ie + io; + // expansion + OP_NOP1: 176, + OP_NOP2: 177, + OP_NOP3: 178, + OP_NOP4: 179, + OP_NOP5: 180, + OP_NOP6: 181, + OP_NOP7: 182, + OP_NOP8: 183, + OP_NOP9: 184, + OP_NOP10: 185, - rtws[p + j + s] = re - ro; - itws[p + j + s] = ie - io; + // template matching params + OP_PUBKEYHASH: 253, + OP_PUBKEY: 254, + OP_INVALIDOPCODE: 255 +}; - /* jshint maxdepth : false */ - if (j !== l) { - rx = rtwdf * rtwdf_ - itwdf * itwdf_; +Opcode.reverseMap = []; - itwdf_ = rtwdf * itwdf_ + itwdf * rtwdf_; - rtwdf_ = rx; - } - } - } - } - }; +for (var k in Opcode.map) { + Opcode.reverseMap[Opcode.map[k]] = k; +} - FFTM.prototype.guessLen13b = function guessLen13b (n, m) { - var N = Math.max(m, n) | 1; - var odd = N & 1; - var i = 0; - for (N = N / 2 | 0; N; N = N >>> 1) { - i++; - } +// Easier access to opcodes +_.extend(Opcode, Opcode.map); - return 1 << i + 1 + odd; - }; +/** + * @returns true if opcode is one of OP_0, OP_1, ..., OP_16 + */ +Opcode.isSmallIntOp = function(opcode) { + if (opcode instanceof Opcode) { + opcode = opcode.toNumber(); + } + return ((opcode === Opcode.map.OP_0) || + ((opcode >= Opcode.map.OP_1) && (opcode <= Opcode.map.OP_16))); +}; - FFTM.prototype.conjugate = function conjugate (rws, iws, N) { - if (N <= 1) return; +/** + * Will return a string formatted for the console + * + * @returns {string} Script opcode + */ +Opcode.prototype.inspect = function() { + return ''; +}; - for (var i = 0; i < N / 2; i++) { - var t = rws[i]; +module.exports = Opcode; - rws[i] = rws[N - i - 1]; - rws[N - i - 1] = t; +}).call(this,require("buffer").Buffer) +},{"./util/buffer":44,"./util/js":45,"./util/preconditions":46,"buffer":100,"lodash":156}],24:[function(require,module,exports){ +(function (Buffer){ +'use strict'; - t = iws[i]; +var _ = require('lodash'); +var Address = require('./address'); +var Base58Check = require('./encoding/base58check'); +var BN = require('./crypto/bn'); +var JSUtil = require('./util/js'); +var Networks = require('./networks'); +var Point = require('./crypto/point'); +var PublicKey = require('./publickey'); +var Random = require('./crypto/random'); +var $ = require('./util/preconditions'); - iws[i] = -iws[N - i - 1]; - iws[N - i - 1] = -t; - } - }; +/** + * Instantiate a PrivateKey from a BN, Buffer and WIF. + * + * @example + * ```javascript + * // generate a new random key + * var key = PrivateKey(); + * + * // get the associated address + * var address = key.toAddress(); + * + * // encode into wallet export format + * var exported = key.toWIF(); + * + * // instantiate from the exported (and saved) private key + * var imported = PrivateKey.fromWIF(exported); + * ``` + * + * @param {string} data - The encoded data in various formats + * @param {Network|string=} network - a {@link Network} object, or a string with the network name + * @returns {PrivateKey} A new valid instance of an PrivateKey + * @constructor + */ +function PrivateKey(data, network) { + /* jshint maxstatements: 20 */ + /* jshint maxcomplexity: 8 */ - FFTM.prototype.normalize13b = function normalize13b (ws, N) { - var carry = 0; - for (var i = 0; i < N / 2; i++) { - var w = Math.round(ws[2 * i + 1] / N) * 0x2000 + - Math.round(ws[2 * i] / N) + - carry; + if (!(this instanceof PrivateKey)) { + return new PrivateKey(data, network); + } + if (data instanceof PrivateKey) { + return data; + } - ws[i] = w & 0x3ffffff; + var info = this._classifyArguments(data, network); - if (w < 0x4000000) { - carry = 0; - } else { - carry = w / 0x4000000 | 0; - } - } + // validation + if (!info.bn || info.bn.cmp(new BN(0)) === 0){ + throw new TypeError('Number can not be equal to zero, undefined, null or false'); + } + if (!info.bn.lt(Point.getN())) { + throw new TypeError('Number must be less than N'); + } + if (typeof(info.network) === 'undefined') { + throw new TypeError('Must specify the network ("livenet" or "testnet")'); + } - return ws; - }; + JSUtil.defineImmutable(this, { + bn: info.bn, + compressed: info.compressed, + network: info.network + }); - FFTM.prototype.convert13b = function convert13b (ws, len, rws, N) { - var carry = 0; - for (var i = 0; i < len; i++) { - carry = carry + (ws[i] | 0); + Object.defineProperty(this, 'publicKey', { + configurable: false, + enumerable: true, + get: this.toPublicKey.bind(this) + }); - rws[2 * i] = carry & 0x1fff; carry = carry >>> 13; - rws[2 * i + 1] = carry & 0x1fff; carry = carry >>> 13; - } + return this; - // Pad with zeroes - for (i = 2 * len; i < N; ++i) { - rws[i] = 0; - } +}; - assert(carry === 0); - assert((carry & ~0x1fff) === 0); +/** + * Internal helper to instantiate PrivateKey internal `info` object from + * different kinds of arguments passed to the constructor. + * + * @param {*} data + * @param {Network|string=} network - a {@link Network} object, or a string with the network name + * @return {Object} + */ +PrivateKey.prototype._classifyArguments = function(data, network) { + /* jshint maxcomplexity: 10 */ + var info = { + compressed: true, + network: network ? Networks.get(network) : Networks.defaultNetwork }; - FFTM.prototype.stub = function stub (N) { - var ph = new Array(N); - for (var i = 0; i < N; i++) { - ph[i] = 0; + // detect type of data + if (_.isUndefined(data) || _.isNull(data)){ + info.bn = PrivateKey._getRandomBN(); + } else if (data instanceof BN) { + info.bn = data; + } else if (data instanceof Buffer || data instanceof Uint8Array) { + info = PrivateKey._transformBuffer(data, network); + } else if (data.bn && data.network){ + info = PrivateKey._transformObject(data); + } else if (!network && Networks.get(data)) { + info.bn = PrivateKey._getRandomBN(); + info.network = Networks.get(data); + } else if (typeof(data) === 'string'){ + if (JSUtil.isHexa(data)) { + info.bn = new BN(Buffer.from(data, 'hex')); + } else { + info = PrivateKey._transformWIF(data, network); } + } else { + throw new TypeError('First argument is an unrecognized data type.'); + } + return info; +}; - return ph; - }; +/** + * Internal function to get a random Big Number (BN) + * + * @returns {BN} A new randomly generated BN + * @private + */ +PrivateKey._getRandomBN = function(){ + var condition; + var bn; + do { + var privbuf = Random.getRandomBuffer(32); + bn = BN.fromBuffer(privbuf); + condition = bn.lt(Point.getN()); + } while (!condition); + return bn; +}; - FFTM.prototype.mulp = function mulp (x, y, out) { - var N = 2 * this.guessLen13b(x.length, y.length); +/** + * Internal function to transform a WIF Buffer into a private key + * + * @param {Buffer} buf - An WIF string + * @param {Network|string=} network - a {@link Network} object, or a string with the network name + * @returns {Object} An object with keys: bn, network and compressed + * @private + */ +PrivateKey._transformBuffer = function(buf, network) { - var rbt = this.makeRBT(N); + var info = {}; - var _ = this.stub(N); + if (buf.length === 32) { + return PrivateKey._transformBNBuffer(buf, network); + } - var rws = new Array(N); - var rwst = new Array(N); - var iwst = new Array(N); + info.network = Networks.get(buf[0], 'privatekey'); - var nrws = new Array(N); - var nrwst = new Array(N); - var niwst = new Array(N); + if (!info.network) { + throw new Error('Invalid network'); + } - var rmws = out.words; - rmws.length = N; + if (network && info.network !== Networks.get(network)) { + throw new TypeError('Private key network mismatch'); + } - this.convert13b(x.words, x.length, rws, N); - this.convert13b(y.words, y.length, nrws, N); + if (buf.length === 1 + 32 + 1 && buf[1 + 32 + 1 - 1] === 1) { + info.compressed = true; + } else if (buf.length === 1 + 32) { + info.compressed = false; + } else { + throw new Error('Length of buffer must be 33 (uncompressed) or 34 (compressed)'); + } - this.transform(rws, _, rwst, iwst, N, rbt); - this.transform(nrws, _, nrwst, niwst, N, rbt); + info.bn = BN.fromBuffer(buf.slice(1, 32 + 1)); - for (var i = 0; i < N; i++) { - var rx = rwst[i] * nrwst[i] - iwst[i] * niwst[i]; - iwst[i] = rwst[i] * niwst[i] + iwst[i] * nrwst[i]; - rwst[i] = rx; - } + return info; +}; - this.conjugate(rwst, iwst, N); - this.transform(rwst, iwst, rmws, _, N, rbt); - this.conjugate(rmws, _, N); - this.normalize13b(rmws, N); +/** + * Internal function to transform a BN buffer into a private key + * + * @param {Buffer} buf + * @param {Network|string=} network - a {@link Network} object, or a string with the network name + * @returns {object} an Object with keys: bn, network, and compressed + * @private + */ +PrivateKey._transformBNBuffer = function(buf, network) { + var info = {}; + info.network = Networks.get(network) || Networks.defaultNetwork; + info.bn = BN.fromBuffer(buf); + info.compressed = false; + return info; +}; - out.negative = x.negative ^ y.negative; - out.length = x.length + y.length; - return out.strip(); - }; +/** + * Internal function to transform a WIF string into a private key + * + * @param {string} buf - An WIF string + * @returns {Object} An object with keys: bn, network and compressed + * @private + */ +PrivateKey._transformWIF = function(str, network) { + return PrivateKey._transformBuffer(Base58Check.decode(str), network); +}; - // Multiply `this` by `num` - BN.prototype.mul = function mul (num) { - var out = new BN(null); - out.words = new Array(this.length + num.length); - return this.mulTo(num, out); - }; +/** + * Instantiate a PrivateKey from a Buffer with the DER or WIF representation + * + * @param {Buffer} arg + * @param {Network} network + * @return {PrivateKey} + */ +PrivateKey.fromBuffer = function(arg, network) { + return new PrivateKey(arg, network); +}; - // Multiply employing FFT - BN.prototype.mulf = function mulf (num) { - var out = new BN(null); - out.words = new Array(this.length + num.length); - return jumboMulTo(this, num, out); +/** + * Internal function to transform a JSON string on plain object into a private key + * return this. + * + * @param {string} json - A JSON string or plain object + * @returns {Object} An object with keys: bn, network and compressed + * @private + */ +PrivateKey._transformObject = function(json) { + var bn = new BN(json.bn, 'hex'); + var network = Networks.get(json.network); + return { + bn: bn, + network: network, + compressed: json.compressed }; +}; - // In-place Multiplication - BN.prototype.imul = function imul (num) { - return this.clone().mulTo(num, this); - }; +/** + * Instantiate a PrivateKey from a WIF string + * + * @param {string} str - The WIF encoded private key string + * @returns {PrivateKey} A new valid instance of PrivateKey + */ +PrivateKey.fromString = PrivateKey.fromWIF = function(str) { + $.checkArgument(_.isString(str), 'First argument is expected to be a string.'); + return new PrivateKey(str); +}; - BN.prototype.imuln = function imuln (num) { - assert(typeof num === 'number'); - assert(num < 0x4000000); +/** + * Instantiate a PrivateKey from a plain JavaScript object + * + * @param {Object} obj - The output from privateKey.toObject() + */ +PrivateKey.fromObject = function(obj) { + $.checkArgument(_.isObject(obj), 'First argument is expected to be an object.'); + return new PrivateKey(obj); +}; - // Carry - var carry = 0; - for (var i = 0; i < this.length; i++) { - var w = (this.words[i] | 0) * num; - var lo = (w & 0x3ffffff) + (carry & 0x3ffffff); - carry >>= 26; - carry += (w / 0x4000000) | 0; - // NOTE: lo is 27bit maximum - carry += lo >>> 26; - this.words[i] = lo & 0x3ffffff; - } +/** + * Instantiate a PrivateKey from random bytes + * + * @param {string=} network - Either "livenet" or "testnet" + * @returns {PrivateKey} A new valid instance of PrivateKey + */ +PrivateKey.fromRandom = function(network) { + var bn = PrivateKey._getRandomBN(); + return new PrivateKey(bn, network); +}; - if (carry !== 0) { - this.words[i] = carry; - this.length++; - } +/** + * Check if there would be any errors when initializing a PrivateKey + * + * @param {string} data - The encoded data in various formats + * @param {string=} network - Either "livenet" or "testnet" + * @returns {null|Error} An error if exists + */ - return this; - }; +PrivateKey.getValidationError = function(data, network) { + var error; + try { + /* jshint nonew: false */ + new PrivateKey(data, network); + } catch (e) { + error = e; + } + return error; +}; - BN.prototype.muln = function muln (num) { - return this.clone().imuln(num); - }; - - // `this` * `this` - BN.prototype.sqr = function sqr () { - return this.mul(this); - }; - - // `this` * `this` in-place - BN.prototype.isqr = function isqr () { - return this.imul(this.clone()); - }; - - // Math.pow(`this`, `num`) - BN.prototype.pow = function pow (num) { - var w = toBitArray(num); - if (w.length === 0) return new BN(1); - - // Skip leading zeroes - var res = this; - for (var i = 0; i < w.length; i++, res = res.sqr()) { - if (w[i] !== 0) break; - } - - if (++i < w.length) { - for (var q = res.sqr(); i < w.length; i++, q = q.sqr()) { - if (w[i] === 0) continue; - - res = res.mul(q); - } - } +/** + * Check if the parameters are valid + * + * @param {string} data - The encoded data in various formats + * @param {string=} network - Either "livenet" or "testnet" + * @returns {Boolean} If the private key is would be valid + */ +PrivateKey.isValid = function(data, network){ + if (!data) { + return false; + } + return !PrivateKey.getValidationError(data, network); +}; - return res; - }; +/** + * Will output the PrivateKey encoded as hex string + * + * @returns {string} + */ +PrivateKey.prototype.toString = function() { + return this.toBuffer().toString('hex'); +}; - // Shift-left in-place - BN.prototype.iushln = function iushln (bits) { - assert(typeof bits === 'number' && bits >= 0); - var r = bits % 26; - var s = (bits - r) / 26; - var carryMask = (0x3ffffff >>> (26 - r)) << (26 - r); - var i; +/** + * Will output the PrivateKey to a WIF string + * + * @returns {string} A WIP representation of the private key + */ +PrivateKey.prototype.toWIF = function() { + var network = this.network; + var compressed = this.compressed; - if (r !== 0) { - var carry = 0; + var buf; + if (compressed) { + buf = Buffer.concat([Buffer.from([network.privatekey]), + this.bn.toBuffer({size: 32}), + Buffer.from([0x01])]); + } else { + buf = Buffer.concat([Buffer.from([network.privatekey]), + this.bn.toBuffer({size: 32})]); + } - for (i = 0; i < this.length; i++) { - var newCarry = this.words[i] & carryMask; - var c = ((this.words[i] | 0) - newCarry) << r; - this.words[i] = c | carry; - carry = newCarry >>> (26 - r); - } + return Base58Check.encode(buf); +}; - if (carry) { - this.words[i] = carry; - this.length++; - } - } +/** + * Will return the private key as a BN instance + * + * @returns {BN} A BN instance of the private key + */ +PrivateKey.prototype.toBigNumber = function(){ + return this.bn; +}; - if (s !== 0) { - for (i = this.length - 1; i >= 0; i--) { - this.words[i + s] = this.words[i]; - } +/** + * Will return the private key as a BN buffer + * + * @returns {Buffer} A buffer of the private key + */ +PrivateKey.prototype.toBuffer = function(){ + // TODO: use `return this.bn.toBuffer({ size: 32 })` in v1.0.0 + return this.bn.toBuffer(); +}; - for (i = 0; i < s; i++) { - this.words[i] = 0; - } +/** + * WARNING: This method will not be officially supported until v1.0.0. + * + * + * Will return the private key as a BN buffer without leading zero padding + * + * @returns {Buffer} A buffer of the private key + */ +PrivateKey.prototype.toBufferNoPadding = function() { + return this.bn.toBuffer(); +}; - this.length += s; - } +/** + * Will return the corresponding public key + * + * @returns {PublicKey} A public key generated from the private key + */ +PrivateKey.prototype.toPublicKey = function(){ + if (!this._pubkey) { + this._pubkey = PublicKey.fromPrivateKey(this); + } + return this._pubkey; +}; - return this.strip(); - }; +/** + * Will return an address for the private key + * @param {Network=} network - optional parameter specifying + * the desired network for the address + * + * @returns {Address} An address generated from the private key + */ +PrivateKey.prototype.toAddress = function(network) { + var pubkey = this.toPublicKey(); + return Address.fromPublicKey(pubkey, network || this.network); +}; - BN.prototype.ishln = function ishln (bits) { - // TODO(indutny): implement me - assert(this.negative === 0); - return this.iushln(bits); +/** + * @returns {Object} A plain object representation + */ +PrivateKey.prototype.toObject = PrivateKey.prototype.toJSON = function toObject() { + return { + bn: this.bn.toString('hex'), + compressed: this.compressed, + network: this.network.toString() }; +}; - // Shift-right in-place - // NOTE: `hint` is a lowest bit before trailing zeroes - // NOTE: if `extended` is present - it will be filled with destroyed bits - BN.prototype.iushrn = function iushrn (bits, hint, extended) { - assert(typeof bits === 'number' && bits >= 0); - var h; - if (hint) { - h = (hint - (hint % 26)) / 26; - } else { - h = 0; - } - - var r = bits % 26; - var s = Math.min((bits - r) / 26, this.length); - var mask = 0x3ffffff ^ ((0x3ffffff >>> r) << r); - var maskedWords = extended; +/** + * Will return a string formatted for the console + * + * @returns {string} Private key + */ +PrivateKey.prototype.inspect = function() { + var uncompressed = !this.compressed ? ', uncompressed' : ''; + return ''; +}; - h -= s; - h = Math.max(0, h); +module.exports = PrivateKey; - // Extended mode, copy masked part - if (maskedWords) { - for (var i = 0; i < s; i++) { - maskedWords.words[i] = this.words[i]; - } - maskedWords.length = s; - } +}).call(this,require("buffer").Buffer) +},{"./address":1,"./crypto/bn":6,"./crypto/point":9,"./crypto/random":10,"./encoding/base58check":13,"./networks":22,"./publickey":25,"./util/js":45,"./util/preconditions":46,"buffer":100,"lodash":156}],25:[function(require,module,exports){ +(function (Buffer){ +'use strict'; - if (s === 0) { - // No-op, we should not move anything at all - } else if (this.length > s) { - this.length -= s; - for (i = 0; i < this.length; i++) { - this.words[i] = this.words[i + s]; - } - } else { - this.words[0] = 0; - this.length = 1; - } +var BN = require('./crypto/bn'); +var Point = require('./crypto/point'); +var Hash = require('./crypto/hash'); +var JSUtil = require('./util/js'); +var Network = require('./networks'); +var _ = require('lodash'); +var $ = require('./util/preconditions'); - var carry = 0; - for (i = this.length - 1; i >= 0 && (carry !== 0 || i >= h); i--) { - var word = this.words[i] | 0; - this.words[i] = (carry << (26 - r)) | (word >>> r); - carry = word & mask; - } +/** + * Instantiate a PublicKey from a {@link PrivateKey}, {@link Point}, `string`, or `Buffer`. + * + * There are two internal properties, `network` and `compressed`, that deal with importing + * a PublicKey from a PrivateKey in WIF format. More details described on {@link PrivateKey} + * + * @example + * ```javascript + * // instantiate from a private key + * var key = PublicKey(privateKey, true); + * + * // export to as a DER hex encoded string + * var exported = key.toString(); + * + * // import the public key + * var imported = PublicKey.fromString(exported); + * ``` + * + * @param {string} data - The encoded data in various formats + * @param {Object} extra - additional options + * @param {Network=} extra.network - Which network should the address for this public key be for + * @param {String=} extra.compressed - If the public key is compressed + * @returns {PublicKey} A new valid instance of an PublicKey + * @constructor + */ +function PublicKey(data, extra) { - // Push carried bits as a mask - if (maskedWords && carry !== 0) { - maskedWords.words[maskedWords.length++] = carry; - } + if (!(this instanceof PublicKey)) { + return new PublicKey(data, extra); + } - if (this.length === 0) { - this.words[0] = 0; - this.length = 1; - } + $.checkArgument(data, 'First argument is required, please include public key data.'); - return this.strip(); - }; + if (data instanceof PublicKey) { + // Return copy, but as it's an immutable object, return same argument + return data; + } + extra = extra || {}; - BN.prototype.ishrn = function ishrn (bits, hint, extended) { - // TODO(indutny): implement me - assert(this.negative === 0); - return this.iushrn(bits, hint, extended); - }; + var info = this._classifyArgs(data, extra); - // Shift-left - BN.prototype.shln = function shln (bits) { - return this.clone().ishln(bits); - }; + // validation + info.point.validate(); - BN.prototype.ushln = function ushln (bits) { - return this.clone().iushln(bits); - }; + JSUtil.defineImmutable(this, { + point: info.point, + compressed: info.compressed, + network: info.network || Network.defaultNetwork + }); - // Shift-right - BN.prototype.shrn = function shrn (bits) { - return this.clone().ishrn(bits); - }; + return this; +}; - BN.prototype.ushrn = function ushrn (bits) { - return this.clone().iushrn(bits); +/** + * Internal function to differentiate between arguments passed to the constructor + * @param {*} data + * @param {Object} extra + */ +PublicKey.prototype._classifyArgs = function(data, extra) { + /* jshint maxcomplexity: 10 */ + var info = { + compressed: _.isUndefined(extra.compressed) || extra.compressed }; - // Test if n bit is set - BN.prototype.testn = function testn (bit) { - assert(typeof bit === 'number' && bit >= 0); - var r = bit % 26; - var s = (bit - r) / 26; - var q = 1 << r; - - // Fast case: bit is much higher than all existing words - if (this.length <= s) return false; + // detect type of data + if (data instanceof Point) { + info.point = data; + } else if (data.x && data.y) { + info = PublicKey._transformObject(data); + } else if (typeof(data) === 'string') { + info = PublicKey._transformDER(Buffer.from(data, 'hex')); + } else if (PublicKey._isBuffer(data)) { + info = PublicKey._transformDER(data); + } else if (PublicKey._isPrivateKey(data)) { + info = PublicKey._transformPrivateKey(data); + } else { + throw new TypeError('First argument is an unrecognized data format.'); + } + if (!info.network) { + info.network = _.isUndefined(extra.network) ? undefined : Network.get(extra.network); + } + return info; +}; - // Check bit and return - var w = this.words[s]; +/** + * Internal function to detect if an object is a {@link PrivateKey} + * + * @param {*} param - object to test + * @returns {boolean} + * @private + */ +PublicKey._isPrivateKey = function(param) { + var PrivateKey = require('./privatekey'); + return param instanceof PrivateKey; +}; - return !!(w & q); - }; +/** + * Internal function to detect if an object is a Buffer + * + * @param {*} param - object to test + * @returns {boolean} + * @private + */ +PublicKey._isBuffer = function(param) { + return (param instanceof Buffer) || (param instanceof Uint8Array); +}; - // Return only lowers bits of number (in-place) - BN.prototype.imaskn = function imaskn (bits) { - assert(typeof bits === 'number' && bits >= 0); - var r = bits % 26; - var s = (bits - r) / 26; +/** + * Internal function to transform a private key into a public key point + * + * @param {PrivateKey} privkey - An instance of PrivateKey + * @returns {Object} An object with keys: point and compressed + * @private + */ +PublicKey._transformPrivateKey = function(privkey) { + $.checkArgument(PublicKey._isPrivateKey(privkey), 'Must be an instance of PrivateKey'); + var info = {}; + info.point = Point.getG().mul(privkey.bn); + info.compressed = privkey.compressed; + info.network = privkey.network; + return info; +}; - assert(this.negative === 0, 'imaskn works only with positive numbers'); +/** + * Internal function to transform DER into a public key point + * + * @param {Buffer} buf - An hex encoded buffer + * @param {bool=} strict - if set to false, will loosen some conditions + * @returns {Object} An object with keys: point and compressed + * @private + */ +PublicKey._transformDER = function(buf, strict) { + /* jshint maxstatements: 30 */ + /* jshint maxcomplexity: 12 */ + $.checkArgument(PublicKey._isBuffer(buf), 'Must be a hex buffer of DER encoded public key'); + var info = {}; - if (this.length <= s) { - return this; - } + strict = _.isUndefined(strict) ? true : strict; - if (r !== 0) { - s++; - } - this.length = Math.min(s, this.length); + var x; + var y; + var xbuf; + var ybuf; - if (r !== 0) { - var mask = 0x3ffffff ^ ((0x3ffffff >>> r) << r); - this.words[this.length - 1] &= mask; + if (buf[0] === 0x04 || (!strict && (buf[0] === 0x06 || buf[0] === 0x07))) { + xbuf = buf.slice(1, 33); + ybuf = buf.slice(33, 65); + if (xbuf.length !== 32 || ybuf.length !== 32 || buf.length !== 65) { + throw new TypeError('Length of x and y must be 32 bytes'); } + x = new BN(xbuf); + y = new BN(ybuf); + info.point = new Point(x, y); + info.compressed = false; + } else if (buf[0] === 0x03) { + xbuf = buf.slice(1); + x = new BN(xbuf); + info = PublicKey._transformX(true, x); + info.compressed = true; + } else if (buf[0] === 0x02) { + xbuf = buf.slice(1); + x = new BN(xbuf); + info = PublicKey._transformX(false, x); + info.compressed = true; + } else { + throw new TypeError('Invalid DER format public key'); + } + return info; +}; - return this.strip(); - }; +/** + * Internal function to transform X into a public key point + * + * @param {Boolean} odd - If the point is above or below the x axis + * @param {Point} x - The x point + * @returns {Object} An object with keys: point and compressed + * @private + */ +PublicKey._transformX = function(odd, x) { + $.checkArgument(typeof odd === 'boolean', 'Must specify whether y is odd or not (true or false)'); + var info = {}; + info.point = Point.fromX(odd, x); + return info; +}; - // Return only lowers bits of number - BN.prototype.maskn = function maskn (bits) { - return this.clone().imaskn(bits); - }; +/** + * Internal function to transform a JSON into a public key point + * + * @param {String|Object} json - a JSON string or plain object + * @returns {Object} An object with keys: point and compressed + * @private + */ +PublicKey._transformObject = function(json) { + var x = new BN(json.x, 'hex'); + var y = new BN(json.y, 'hex'); + var point = new Point(x, y); + return new PublicKey(point, { + compressed: json.compressed + }); +}; - // Add plain number `num` to `this` - BN.prototype.iaddn = function iaddn (num) { - assert(typeof num === 'number'); - assert(num < 0x4000000); - if (num < 0) return this.isubn(-num); +/** + * Instantiate a PublicKey from a PrivateKey + * + * @param {PrivateKey} privkey - An instance of PrivateKey + * @returns {PublicKey} A new valid instance of PublicKey + */ +PublicKey.fromPrivateKey = function(privkey) { + $.checkArgument(PublicKey._isPrivateKey(privkey), 'Must be an instance of PrivateKey'); + var info = PublicKey._transformPrivateKey(privkey); + return new PublicKey(info.point, { + compressed: info.compressed, + network: info.network + }); +}; - // Possible sign change - if (this.negative !== 0) { - if (this.length === 1 && (this.words[0] | 0) < num) { - this.words[0] = num - (this.words[0] | 0); - this.negative = 0; - return this; - } +/** + * Instantiate a PublicKey from a Buffer + * @param {Buffer} buf - A DER hex buffer + * @param {bool=} strict - if set to false, will loosen some conditions + * @returns {PublicKey} A new valid instance of PublicKey + */ +PublicKey.fromDER = PublicKey.fromBuffer = function(buf, strict) { + $.checkArgument(PublicKey._isBuffer(buf), 'Must be a hex buffer of DER encoded public key'); + var info = PublicKey._transformDER(buf, strict); + return new PublicKey(info.point, { + compressed: info.compressed + }); +}; - this.negative = 0; - this.isubn(num); - this.negative = 1; - return this; - } +/** + * Instantiate a PublicKey from a Point + * + * @param {Point} point - A Point instance + * @param {boolean=} compressed - whether to store this public key as compressed format + * @returns {PublicKey} A new valid instance of PublicKey + */ +PublicKey.fromPoint = function(point, compressed) { + $.checkArgument(point instanceof Point, 'First argument must be an instance of Point.'); + return new PublicKey(point, { + compressed: compressed + }); +}; - // Add without checks - return this._iaddn(num); - }; +/** + * Instantiate a PublicKey from a DER hex encoded string + * + * @param {string} str - A DER hex string + * @param {String=} encoding - The type of string encoding + * @returns {PublicKey} A new valid instance of PublicKey + */ +PublicKey.fromString = function(str, encoding) { + var buf = Buffer.from(str, encoding || 'hex'); + var info = PublicKey._transformDER(buf); + return new PublicKey(info.point, { + compressed: info.compressed + }); +}; - BN.prototype._iaddn = function _iaddn (num) { - this.words[0] += num; +/** + * Instantiate a PublicKey from an X Point + * + * @param {Boolean} odd - If the point is above or below the x axis + * @param {Point} x - The x point + * @returns {PublicKey} A new valid instance of PublicKey + */ +PublicKey.fromX = function(odd, x) { + var info = PublicKey._transformX(odd, x); + return new PublicKey(info.point, { + compressed: info.compressed + }); +}; - // Carry - for (var i = 0; i < this.length && this.words[i] >= 0x4000000; i++) { - this.words[i] -= 0x4000000; - if (i === this.length - 1) { - this.words[i + 1] = 1; - } else { - this.words[i + 1]++; - } - } - this.length = Math.max(this.length, i + 1); +/** + * Check if there would be any errors when initializing a PublicKey + * + * @param {string} data - The encoded data in various formats + * @returns {null|Error} An error if exists + */ +PublicKey.getValidationError = function(data) { + var error; + try { + /* jshint nonew: false */ + new PublicKey(data); + } catch (e) { + error = e; + } + return error; +}; - return this; - }; +/** + * Check if the parameters are valid + * + * @param {string} data - The encoded data in various formats + * @returns {Boolean} If the public key would be valid + */ +PublicKey.isValid = function(data) { + return !PublicKey.getValidationError(data); +}; - // Subtract plain number `num` from `this` - BN.prototype.isubn = function isubn (num) { - assert(typeof num === 'number'); - assert(num < 0x4000000); - if (num < 0) return this.iaddn(-num); +/** + * @returns {Object} A plain object of the PublicKey + */ +PublicKey.prototype.toObject = PublicKey.prototype.toJSON = function toObject() { + return { + x: this.point.getX().toString('hex', 2), + y: this.point.getY().toString('hex', 2), + compressed: this.compressed + }; +}; - if (this.negative !== 0) { - this.negative = 0; - this.iaddn(num); - this.negative = 1; - return this; - } +/** + * Will output the PublicKey to a DER Buffer + * + * @returns {Buffer} A DER hex encoded buffer + */ +PublicKey.prototype.toBuffer = PublicKey.prototype.toDER = function() { + var x = this.point.getX(); + var y = this.point.getY(); - this.words[0] -= num; + var xbuf = x.toBuffer({ + size: 32 + }); + var ybuf = y.toBuffer({ + size: 32 + }); - if (this.length === 1 && this.words[0] < 0) { - this.words[0] = -this.words[0]; - this.negative = 1; + var prefix; + if (!this.compressed) { + prefix = Buffer.from([0x04]); + return Buffer.concat([prefix, xbuf, ybuf]); + } else { + var odd = ybuf[ybuf.length - 1] % 2; + if (odd) { + prefix = Buffer.from([0x03]); } else { - // Carry - for (var i = 0; i < this.length && this.words[i] < 0; i++) { - this.words[i] += 0x4000000; - this.words[i + 1] -= 1; - } + prefix = Buffer.from([0x02]); } + return Buffer.concat([prefix, xbuf]); + } +}; - return this.strip(); - }; - - BN.prototype.addn = function addn (num) { - return this.clone().iaddn(num); - }; +/** + * Will return a sha256 + ripemd160 hash of the serialized public key + * @see https://github.com/bitcoin/bitcoin/blob/master/src/pubkey.h#L141 + * @returns {Buffer} + */ +PublicKey.prototype._getID = function _getID() { + return Hash.sha256ripemd160(this.toBuffer()); +}; - BN.prototype.subn = function subn (num) { - return this.clone().isubn(num); - }; +/** + * Will return an address for the public key + * + * @param {String|Network=} network - Which network should the address be for + * @returns {Address} An address generated from the public key + */ +PublicKey.prototype.toAddress = function(network) { + var Address = require('./address'); + return Address.fromPublicKey(this, network || this.network); +}; - BN.prototype.iabs = function iabs () { - this.negative = 0; +/** + * Will output the PublicKey to a DER encoded hex string + * + * @returns {string} A DER hex encoded string + */ +PublicKey.prototype.toString = function() { + return this.toDER().toString('hex'); +}; - return this; - }; +/** + * Will return a string formatted for the console + * + * @returns {string} Public key + */ +PublicKey.prototype.inspect = function() { + return ''; +}; - BN.prototype.abs = function abs () { - return this.clone().iabs(); - }; - BN.prototype._ishlnsubmul = function _ishlnsubmul (num, mul, shift) { - var len = num.length + shift; - var i; +module.exports = PublicKey; - this._expand(len); +}).call(this,require("buffer").Buffer) +},{"./address":1,"./crypto/bn":6,"./crypto/hash":8,"./crypto/point":9,"./networks":22,"./privatekey":24,"./util/js":45,"./util/preconditions":46,"buffer":100,"lodash":156}],26:[function(require,module,exports){ +module.exports = require('./script'); - var w; - var carry = 0; - for (i = 0; i < num.length; i++) { - w = (this.words[i + shift] | 0) + carry; - var right = (num.words[i] | 0) * mul; - w -= right & 0x3ffffff; - carry = (w >> 26) - ((right / 0x4000000) | 0); - this.words[i + shift] = w & 0x3ffffff; - } - for (; i < this.length - shift; i++) { - w = (this.words[i + shift] | 0) + carry; - carry = w >> 26; - this.words[i + shift] = w & 0x3ffffff; - } +module.exports.Interpreter = require('./interpreter'); - if (carry === 0) return this.strip(); +},{"./interpreter":27,"./script":28}],27:[function(require,module,exports){ +(function (Buffer){ +'use strict'; - // Subtraction overflow - assert(carry === -1); - carry = 0; - for (i = 0; i < this.length; i++) { - w = -(this.words[i] | 0) + carry; - carry = w >> 26; - this.words[i] = w & 0x3ffffff; - } - this.negative = 1; +var _ = require('lodash'); - return this.strip(); - }; +var Script = require('./script'); +var Opcode = require('../opcode'); +var BN = require('../crypto/bn'); +var Hash = require('../crypto/hash'); +var Signature = require('../crypto/signature'); +var PublicKey = require('../publickey'); - BN.prototype._wordDiv = function _wordDiv (num, mode) { - var shift = this.length - num.length; +/** + * Bitcoin transactions contain scripts. Each input has a script called the + * scriptSig, and each output has a script called the scriptPubkey. To validate + * an input, the input's script is concatenated with the referenced output script, + * and the result is executed. If at the end of execution the stack contains a + * "true" value, then the transaction is valid. + * + * The primary way to use this class is via the verify function. + * e.g., Interpreter().verify( ... ); + */ +var Interpreter = function Interpreter(obj) { + if (!(this instanceof Interpreter)) { + return new Interpreter(obj); + } + if (obj) { + this.initialize(); + this.set(obj); + } else { + this.initialize(); + } +}; - var a = this.clone(); - var b = num; +Interpreter.prototype.verifyWitnessProgram = function(version, program, witness, satoshis, flags) { - // Normalize - var bhi = b.words[b.length - 1] | 0; - var bhiBits = this._countBits(bhi); - shift = 26 - bhiBits; - if (shift !== 0) { - b = b.ushln(shift); - a.iushln(shift); - bhi = b.words[b.length - 1] | 0; - } + var scriptPubKey = new Script(); + var stack = []; - // Initialize quotient - var m = a.length - b.length; - var q; + if (version === 0) { + if (program.length === 32) { + if (witness.length === 0) { + this.errstr = 'SCRIPT_ERR_WITNESS_PROGRAM_WITNESS_EMPTY'; + return false; + } - if (mode !== 'mod') { - q = new BN(null); - q.length = m + 1; - q.words = new Array(q.length); - for (var i = 0; i < q.length; i++) { - q.words[i] = 0; + var scriptPubKeyBuffer = witness[witness.length - 1]; + scriptPubKey = new Script(scriptPubKeyBuffer); + var hash = Hash.sha256(scriptPubKeyBuffer); + if (hash.toString('hex') !== program.toString('hex')) { + this.errstr = 'SCRIPT_ERR_WITNESS_PROGRAM_MISMATCH'; + return false; } - } - var diff = a.clone()._ishlnsubmul(b, 1, m); - if (diff.negative === 0) { - a = diff; - if (q) { - q.words[m] = 1; + stack = witness.slice(0, -1); + } else if (program.length === 20) { + if (witness.length !== 2) { + this.errstr = 'SCRIPT_ERR_WITNESS_PROGRAM_MISMATCH'; + return false; } - } - for (var j = m - 1; j >= 0; j--) { - var qj = (a.words[b.length + j] | 0) * 0x4000000 + - (a.words[b.length + j - 1] | 0); + scriptPubKey.add(Opcode.OP_DUP); + scriptPubKey.add(Opcode.OP_HASH160); + scriptPubKey.add(program); + scriptPubKey.add(Opcode.OP_EQUALVERIFY); + scriptPubKey.add(Opcode.OP_CHECKSIG); - // NOTE: (qj / bhi) is (0x3ffffff * 0x4000000 + 0x3ffffff) / 0x2000000 max - // (0x7ffffff) - qj = Math.min((qj / bhi) | 0, 0x3ffffff); + stack = witness; - a._ishlnsubmul(b, qj, j); - while (a.negative !== 0) { - qj--; - a.negative = 0; - a._ishlnsubmul(b, 1, j); - if (!a.isZero()) { - a.negative ^= 1; - } - } - if (q) { - q.words[j] = qj; - } - } - if (q) { - q.strip(); + } else { + this.errstr = 'SCRIPT_ERR_WITNESS_PROGRAM_WRONG_LENGTH'; + return false; } - a.strip(); + } else if ((flags & Interpreter.SCRIPT_VERIFY_DISCOURAGE_UPGRADABLE_WITNESS_PROGRAM)) { + this.errstr = 'SCRIPT_ERR_DISCOURAGE_UPGRADABLE_WITNESS_PROGRAM'; + return false; + } else { + return true; + } - // Denormalize - if (mode !== 'div' && shift !== 0) { - a.iushrn(shift); - } + this.initialize(); - return { - div: q || null, - mod: a - }; - }; + this.set({ + script: scriptPubKey, + stack: stack, + sigversion: 1, + satoshis: satoshis, + flags: flags, + }); - // NOTE: 1) `mode` can be set to `mod` to request mod only, - // to `div` to request div only, or be absent to - // request both div & mod - // 2) `positive` is true if unsigned mod is requested - BN.prototype.divmod = function divmod (num, mode, positive) { - assert(!num.isZero()); + if (!this.evaluate()) { + return false; + } - if (this.isZero()) { - return { - div: new BN(0), - mod: new BN(0) - }; - } + if (this.stack.length !== 1) { + this.errstr = 'SCRIPT_ERR_EVAL_FALSE'; + return false; + } - var div, mod, res; - if (this.negative !== 0 && num.negative === 0) { - res = this.neg().divmod(num, mode); + var buf = this.stack[this.stack.length - 1]; + if (!Interpreter.castToBool(buf)) { + this.errstr = 'SCRIPT_ERR_EVAL_FALSE_IN_STACK'; + return false; + } - if (mode !== 'mod') { - div = res.div.neg(); - } + return true; +}; - if (mode !== 'div') { - mod = res.mod.neg(); - if (positive && mod.negative !== 0) { - mod.iadd(num); - } - } - return { - div: div, - mod: mod - }; - } - if (this.negative === 0 && num.negative !== 0) { - res = this.divmod(num.neg(), mode); +/** + * Verifies a Script by executing it and returns true if it is valid. + * This function needs to be provided with the scriptSig and the scriptPubkey + * separately. + * @param {Script} scriptSig - the script's first part (corresponding to the tx input) + * @param {Script} scriptPubkey - the script's last part (corresponding to the tx output) + * @param {Transaction=} tx - the Transaction containing the scriptSig in one input (used + * to check signature validity for some opcodes like OP_CHECKSIG) + * @param {number} nin - index of the transaction input containing the scriptSig verified. + * @param {number} flags - evaluation flags. See Interpreter.SCRIPT_* constants + * @param {number} witness - array of witness data + * @param {number} satoshis - number of satoshis created by this output + * + * Translated from bitcoind's VerifyScript + */ +Interpreter.prototype.verify = function(scriptSig, scriptPubkey, tx, nin, flags, witness, satoshis) { - if (mode !== 'mod') { - div = res.div.neg(); - } + var Transaction = require('../transaction'); + if (_.isUndefined(tx)) { + tx = new Transaction(); + } + if (_.isUndefined(nin)) { + nin = 0; + } + if (_.isUndefined(flags)) { + flags = 0; + } + if (_.isUndefined(witness)) { + witness = null; + } + if (_.isUndefined(satoshis)) { + satoshis = 0; + } - return { - div: div, - mod: res.mod - }; - } + this.set({ + script: scriptSig, + tx: tx, + nin: nin, + sigversion: 0, + satoshis: 0, + flags: flags + }); + var stackCopy; - if ((this.negative & num.negative) !== 0) { - res = this.neg().divmod(num.neg(), mode); + if ((flags & Interpreter.SCRIPT_VERIFY_SIGPUSHONLY) !== 0 && !scriptSig.isPushOnly()) { + this.errstr = 'SCRIPT_ERR_SIG_PUSHONLY'; + return false; + } - if (mode !== 'div') { - mod = res.mod.neg(); - if (positive && mod.negative !== 0) { - mod.isub(num); - } - } + // evaluate scriptSig + if (!this.evaluate()) { + return false; + } - return { - div: res.div, - mod: mod - }; - } + if (flags & Interpreter.SCRIPT_VERIFY_P2SH) { + stackCopy = this.stack.slice(); + } - // Both numbers are positive at this point + var stack = this.stack; + this.initialize(); + this.set({ + script: scriptPubkey, + stack: stack, + tx: tx, + nin: nin, + flags: flags + }); - // Strip both numbers to approximate shift value - if (num.length > this.length || this.cmp(num) < 0) { - return { - div: new BN(0), - mod: this - }; - } + // evaluate scriptPubkey + if (!this.evaluate()) { + return false; + } - // Very short reduction - if (num.length === 1) { - if (mode === 'div') { - return { - div: this.divn(num.words[0]), - mod: null - }; - } + if (this.stack.length === 0) { + this.errstr = 'SCRIPT_ERR_EVAL_FALSE_NO_RESULT'; + return false; + } - if (mode === 'mod') { - return { - div: null, - mod: new BN(this.modn(num.words[0])) - }; + var buf = this.stack[this.stack.length - 1]; + if (!Interpreter.castToBool(buf)) { + this.errstr = 'SCRIPT_ERR_EVAL_FALSE_IN_STACK'; + return false; + } + + var hadWitness = false; + if ((flags & Interpreter.SCRIPT_VERIFY_WITNESS)) { + var witnessValues = {}; + if (scriptPubkey.isWitnessProgram(witnessValues)) { + hadWitness = true; + if (scriptSig.toBuffer().length !== 0) { + return false; + } + if (!this.verifyWitnessProgram(witnessValues.version, witnessValues.program, witness, satoshis, this.flags)) { + return false; } + } + } - return { - div: this.divn(num.words[0]), - mod: new BN(this.modn(num.words[0])) - }; + // Additional validation for spend-to-script-hash transactions: + if ((flags & Interpreter.SCRIPT_VERIFY_P2SH) && scriptPubkey.isScriptHashOut()) { + // scriptSig must be literals-only or validation fails + if (!scriptSig.isPushOnly()) { + this.errstr = 'SCRIPT_ERR_SIG_PUSHONLY'; + return false; } - return this._wordDiv(num, mode); - }; + // stackCopy cannot be empty here, because if it was the + // P2SH HASH <> EQUAL scriptPubKey would be evaluated with + // an empty stack and the EvalScript above would return false. + if (stackCopy.length === 0) { + throw new Error('internal error - stack copy empty'); + } - // Find `this` / `num` - BN.prototype.div = function div (num) { - return this.divmod(num, 'div', false).div; - }; + var redeemScriptSerialized = stackCopy[stackCopy.length - 1]; + var redeemScript = Script.fromBuffer(redeemScriptSerialized); + stackCopy.pop(); - // Find `this` % `num` - BN.prototype.mod = function mod (num) { - return this.divmod(num, 'mod', false).mod; - }; + this.initialize(); + this.set({ + script: redeemScript, + stack: stackCopy, + tx: tx, + nin: nin, + flags: flags + }); - BN.prototype.umod = function umod (num) { - return this.divmod(num, 'mod', true).mod; - }; + // evaluate redeemScript + if (!this.evaluate()) { + return false; + } - // Find Round(`this` / `num`) - BN.prototype.divRound = function divRound (num) { - var dm = this.divmod(num); + if (stackCopy.length === 0) { + this.errstr = 'SCRIPT_ERR_EVAL_FALSE_NO_P2SH_STACK'; + return false; + } - // Fast case - exact division - if (dm.mod.isZero()) return dm.div; + if (!Interpreter.castToBool(stackCopy[stackCopy.length - 1])) { + this.errstr = 'SCRIPT_ERR_EVAL_FALSE_IN_P2SH_STACK'; + return false; + } + if ((flags & Interpreter.SCRIPT_VERIFY_WITNESS)) { + var p2shWitnessValues = {}; + if (redeemScript.isWitnessProgram(p2shWitnessValues)) { + hadWitness = true; + var redeemScriptPush = new Script(); + redeemScriptPush.add(redeemScript.toBuffer()); + if (scriptSig.toHex() !== redeemScriptPush.toHex()) { + this.errstr = 'SCRIPT_ERR_WITNESS_MALLEATED_P2SH'; + return false; + } - var mod = dm.div.negative !== 0 ? dm.mod.isub(num) : dm.mod; + if (!this.verifyWitnessProgram(p2shWitnessValues.version, p2shWitnessValues.program, witness, satoshis, this.flags)) { + return false; + } + // Bypass the cleanstack check at the end. The actual stack is obviously not clean + // for witness programs. + stack = [stack[0]]; + } + } + } - var half = num.ushrn(1); - var r2 = num.andln(1); - var cmp = mod.cmp(half); + // The CLEANSTACK check is only performed after potential P2SH evaluation, + // as the non-P2SH evaluation of a P2SH script will obviously not result in + // a clean stack (the P2SH inputs remain). The same holds for witness + // evaluation. + if ((this.flags & Interpreter.SCRIPT_VERIFY_CLEANSTACK) != 0) { + // Disallow CLEANSTACK without P2SH, as otherwise a switch + // CLEANSTACK->P2SH+CLEANSTACK would be possible, which is not a + // softfork (and P2SH should be one). + if ((this.flags & Interpreter.SCRIPT_VERIFY_P2SH) == 0) + throw 'flags & SCRIPT_VERIFY_P2SH'; - // Round down - if (cmp < 0 || r2 === 1 && cmp === 0) return dm.div; + if (stackCopy.length != 1) { + this.errstr = 'SCRIPT_ERR_CLEANSTACK'; + return false; + } + } - // Round up - return dm.div.negative !== 0 ? dm.div.isubn(1) : dm.div.iaddn(1); - }; + if ((this.flags & Interpreter.SCRIPT_VERIFY_WITNESS)) { + if (!hadWitness && witness.length > 0) { + this.errstr = 'SCRIPT_ERR_WITNESS_UNEXPECTED'; + return false; + } + } - BN.prototype.modn = function modn (num) { - assert(num <= 0x3ffffff); - var p = (1 << 26) % num; + return true; +}; - var acc = 0; - for (var i = this.length - 1; i >= 0; i--) { - acc = (p * acc + (this.words[i] | 0)) % num; - } +module.exports = Interpreter; - return acc; - }; +Interpreter.prototype.initialize = function(obj) { + this.stack = []; + this.altstack = []; + this.pc = 0; + this.satoshis = 0; + this.sigversion = 0; + this.pbegincodehash = 0; + this.nOpCount = 0; + this.vfExec = []; + this.errstr = ''; + this.flags = 0; +}; - // In-place division by number - BN.prototype.idivn = function idivn (num) { - assert(num <= 0x3ffffff); +Interpreter.prototype.set = function(obj) { + this.script = obj.script || this.script; + this.tx = obj.tx || this.tx; + this.nin = typeof obj.nin !== 'undefined' ? obj.nin : this.nin; + this.stack = obj.stack || this.stack; + this.altstack = obj.altack || this.altstack; + this.pc = typeof obj.pc !== 'undefined' ? obj.pc : this.pc; + this.pbegincodehash = typeof obj.pbegincodehash !== 'undefined' ? obj.pbegincodehash : this.pbegincodehash; + this.sigversion = typeof obj.sigversion !== 'undefined' ? obj.sigversion : this.sigversion; + this.satoshis = typeof obj.satoshis !== 'undefined' ? obj.satoshis : this.satoshis; + this.nOpCount = typeof obj.nOpCount !== 'undefined' ? obj.nOpCount : this.nOpCount; + this.vfExec = obj.vfExec || this.vfExec; + this.errstr = obj.errstr || this.errstr; + this.flags = typeof obj.flags !== 'undefined' ? obj.flags : this.flags; +}; - var carry = 0; - for (var i = this.length - 1; i >= 0; i--) { - var w = (this.words[i] | 0) + carry * 0x4000000; - this.words[i] = (w / num) | 0; - carry = w % num; - } +Interpreter.true = Buffer.from([1]); +Interpreter.false = Buffer.from([]); - return this.strip(); - }; +Interpreter.MAX_SCRIPT_ELEMENT_SIZE = 520; - BN.prototype.divn = function divn (num) { - return this.clone().idivn(num); - }; +Interpreter.LOCKTIME_THRESHOLD = 500000000; +Interpreter.LOCKTIME_THRESHOLD_BN = new BN(Interpreter.LOCKTIME_THRESHOLD); - BN.prototype.egcd = function egcd (p) { - assert(p.negative === 0); - assert(!p.isZero()); +// flags taken from bitcoind +// bitcoind commit: b5d1b1092998bc95313856d535c632ea5a8f9104 +Interpreter.SCRIPT_VERIFY_NONE = 0; - var x = this; - var y = p.clone(); +// Making v1-v16 witness program non-standard +Interpreter.SCRIPT_VERIFY_DISCOURAGE_UPGRADABLE_WITNESS_PROGRAM = (1 << 12); - if (x.negative !== 0) { - x = x.umod(p); - } else { - x = x.clone(); - } +// Evaluate P2SH subscripts (softfork safe, BIP16). +Interpreter.SCRIPT_VERIFY_P2SH = (1 << 0); - // A * x + B * y = x - var A = new BN(1); - var B = new BN(0); +// Passing a non-strict-DER signature or one with undefined hashtype to a checksig operation causes script failure. +// Passing a pubkey that is not (0x04 + 64 bytes) or (0x02 or 0x03 + 32 bytes) to checksig causes that pubkey to be +// skipped (not softfork safe: this flag can widen the validity of OP_CHECKSIG OP_NOT). +Interpreter.SCRIPT_VERIFY_STRICTENC = (1 << 1); - // C * x + D * y = y - var C = new BN(0); - var D = new BN(1); +// Passing a non-strict-DER signature to a checksig operation causes script failure (softfork safe, BIP62 rule 1) +Interpreter.SCRIPT_VERIFY_DERSIG = (1 << 2); - var g = 0; +// Passing a non-strict-DER signature or one with S > order/2 to a checksig operation causes script failure +// (softfork safe, BIP62 rule 5). +Interpreter.SCRIPT_VERIFY_LOW_S = (1 << 3); - while (x.isEven() && y.isEven()) { - x.iushrn(1); - y.iushrn(1); - ++g; - } +// verify dummy stack item consumed by CHECKMULTISIG is of zero-length (softfork safe, BIP62 rule 7). +Interpreter.SCRIPT_VERIFY_NULLDUMMY = (1 << 4); - var yp = y.clone(); - var xp = x.clone(); +// Using a non-push operator in the scriptSig causes script failure (softfork safe, BIP62 rule 2). +Interpreter.SCRIPT_VERIFY_SIGPUSHONLY = (1 << 5); - while (!x.isZero()) { - for (var i = 0, im = 1; (x.words[0] & im) === 0 && i < 26; ++i, im <<= 1); - if (i > 0) { - x.iushrn(i); - while (i-- > 0) { - if (A.isOdd() || B.isOdd()) { - A.iadd(yp); - B.isub(xp); - } +// Require minimal encodings for all push operations (OP_0... OP_16, OP_1NEGATE where possible, direct +// pushes up to 75 bytes, OP_PUSHDATA up to 255 bytes, OP_PUSHDATA2 for anything larger). Evaluating +// any other push causes the script to fail (BIP62 rule 3). +// In addition, whenever a stack element is interpreted as a number, it must be of minimal length (BIP62 rule 4). +// (softfork safe) +Interpreter.SCRIPT_VERIFY_MINIMALDATA = (1 << 6); - A.iushrn(1); - B.iushrn(1); - } - } +// Discourage use of NOPs reserved for upgrades (NOP1-10) +// +// Provided so that nodes can avoid accepting or mining transactions +// containing executed NOP's whose meaning may change after a soft-fork, +// thus rendering the script invalid; with this flag set executing +// discouraged NOPs fails the script. This verification flag will never be +// a mandatory flag applied to scripts in a block. NOPs that are not +// executed, e.g. within an unexecuted IF ENDIF block, are *not* rejected. +Interpreter.SCRIPT_VERIFY_DISCOURAGE_UPGRADABLE_NOPS = (1 << 7); - for (var j = 0, jm = 1; (y.words[0] & jm) === 0 && j < 26; ++j, jm <<= 1); - if (j > 0) { - y.iushrn(j); - while (j-- > 0) { - if (C.isOdd() || D.isOdd()) { - C.iadd(yp); - D.isub(xp); - } - C.iushrn(1); - D.iushrn(1); - } - } +// Require that only a single stack element remains after evaluation. This +// changes the success criterion from "At least one stack element must +// remain, and when interpreted as a boolean, it must be true" to "Exactly +// one stack element must remain, and when interpreted as a boolean, it must +// be true". +// (softfork safe, BIP62 rule 6) +// Note: CLEANSTACK should never be used without P2SH or WITNESS. +Interpreter.SCRIPT_VERIFY_CLEANSTACK = (1 << 8), - if (x.cmp(y) >= 0) { - x.isub(y); - A.isub(C); - B.isub(D); - } else { - y.isub(x); - C.isub(A); - D.isub(B); - } - } +// CLTV See BIP65 for details. +Interpreter.SCRIPT_VERIFY_CHECKLOCKTIMEVERIFY = (1 << 9); +Interpreter.SCRIPT_VERIFY_WITNESS = (1 << 10); +Interpreter.SCRIPT_VERIFY_DISCOURAGE_UPGRADABLE_NOPS = (1 << 11); - return { - a: C, - b: D, - gcd: y.iushln(g) - }; - }; +// support CHECKSEQUENCEVERIFY opcode +// +// See BIP112 for details +Interpreter.SCRIPT_VERIFY_CHECKSEQUENCEVERIFY = (1 << 10); - // This is reduced incarnation of the binary EEA - // above, designated to invert members of the - // _prime_ fields F(p) at a maximal speed - BN.prototype._invmp = function _invmp (p) { - assert(p.negative === 0); - assert(!p.isZero()); +// +// Segwit script only: Require the argument of OP_IF/NOTIF to be exactly +// 0x01 or empty vector +// +Interpreter.SCRIPT_VERIFY_MINIMALIF = (1 << 13); - var a = this; - var b = p.clone(); - if (a.negative !== 0) { - a = a.umod(p); - } else { - a = a.clone(); - } +// Signature(s) must be empty vector if an CHECK(MULTI)SIG operation failed +// +Interpreter.SCRIPT_VERIFY_NULLFAIL = (1 << 14); - var x1 = new BN(1); - var x2 = new BN(0); +// Public keys in scripts must be compressed +// +Interpreter.SCRIPT_VERIFY_WITNESS_PUBKEYTYPE = (1 << 15); - var delta = b.clone(); +// Do we accept signature using SIGHASH_FORKID +// +Interpreter.SCRIPT_ENABLE_SIGHASH_FORKID = (1 << 16); - while (a.cmpn(1) > 0 && b.cmpn(1) > 0) { - for (var i = 0, im = 1; (a.words[0] & im) === 0 && i < 26; ++i, im <<= 1); - if (i > 0) { - a.iushrn(i); - while (i-- > 0) { - if (x1.isOdd()) { - x1.iadd(delta); - } +// Do we accept activate replay protection using a different fork id. +// +Interpreter.SCRIPT_ENABLE_REPLAY_PROTECTION = (1 << 17); - x1.iushrn(1); - } - } +// Enable new opcodes. +// +Interpreter.SCRIPT_ENABLE_MONOLITH_OPCODES = (1 << 18); - for (var j = 0, jm = 1; (b.words[0] & jm) === 0 && j < 26; ++j, jm <<= 1); - if (j > 0) { - b.iushrn(j); - while (j-- > 0) { - if (x2.isOdd()) { - x2.iadd(delta); - } - x2.iushrn(1); - } - } - if (a.cmp(b) >= 0) { - a.isub(b); - x1.isub(x2); - } else { - b.isub(a); - x2.isub(x1); +/* Below flags apply in the context of BIP 68*/ +/** + * If this flag set, CTxIn::nSequence is NOT interpreted as a relative + * lock-time. + */ +Interpreter.SEQUENCE_LOCKTIME_DISABLE_FLAG = (1 << 31); + +/** + * If CTxIn::nSequence encodes a relative lock-time and this flag is set, + * the relative lock-time has units of 512 seconds, otherwise it specifies + * blocks with a granularity of 1. + */ +Interpreter.SEQUENCE_LOCKTIME_TYPE_FLAG = (1 << 22); + +/** + * If CTxIn::nSequence encodes a relative lock-time, this mask is applied to + * extract that lock-time from the sequence field. + */ +Interpreter.SEQUENCE_LOCKTIME_MASK = 0x0000ffff; + + +Interpreter.castToBool = function(buf) { + for (var i = 0; i < buf.length; i++) { + if (buf[i] !== 0) { + // can be negative zero + if (i === buf.length - 1 && buf[i] === 0x80) { + return false; } + return true; } + } + return false; +}; - var res; - if (a.cmpn(1) === 0) { - res = x1; - } else { - res = x2; +/** + * Translated from bitcoind's CheckSignatureEncoding + */ +Interpreter.prototype.checkSignatureEncoding = function(buf) { + var sig; + + // Empty signature. Not strictly DER encoded, but allowed to provide a + // compact way to provide an invalid signature for use with CHECK(MULTI)SIG + if (buf.length == 0) { + return true; } - if (res.cmpn(0) < 0) { - res.iadd(p); + if ((this.flags & (Interpreter.SCRIPT_VERIFY_DERSIG | Interpreter.SCRIPT_VERIFY_LOW_S | Interpreter.SCRIPT_VERIFY_STRICTENC)) !== 0 && !Signature.isTxDER(buf)) { + this.errstr = 'SCRIPT_ERR_SIG_DER_INVALID_FORMAT'; + return false; + } else if ((this.flags & Interpreter.SCRIPT_VERIFY_LOW_S) !== 0) { + sig = Signature.fromTxFormat(buf); + if (!sig.hasLowS()) { + this.errstr = 'SCRIPT_ERR_SIG_DER_HIGH_S'; + return false; + } + } else if ((this.flags & Interpreter.SCRIPT_VERIFY_STRICTENC) !== 0) { + sig = Signature.fromTxFormat(buf); + if (!sig.hasDefinedHashtype()) { + this.errstr = 'SCRIPT_ERR_SIG_HASHTYPE'; + return false; } + } - return res; - }; + return true; +}; - BN.prototype.gcd = function gcd (num) { - if (this.isZero()) return num.abs(); - if (num.isZero()) return this.abs(); +/** + * Translated from bitcoind's CheckPubKeyEncoding + */ +Interpreter.prototype.checkPubkeyEncoding = function(buf) { + if ((this.flags & Interpreter.SCRIPT_VERIFY_STRICTENC) !== 0 && !PublicKey.isValid(buf)) { + this.errstr = 'SCRIPT_ERR_PUBKEYTYPE'; + return false; + } - var a = this.clone(); - var b = num.clone(); - a.negative = 0; - b.negative = 0; + // Only compressed keys are accepted in segwit + if ((this.flags & Interpreter.SCRIPT_VERIFY_WITNESS_PUBKEYTYPE) != 0 && this.sigversion == 1 && !PublicKey.fromBuffer(buf).compressed) { + this.errstr = 'SCRIPT_ERR_WITNESS_PUBKEYTYPE'; + return false; + } - // Remove common factor of two - for (var shift = 0; a.isEven() && b.isEven(); shift++) { - a.iushrn(1); - b.iushrn(1); - } + return true; +}; - do { - while (a.isEven()) { - a.iushrn(1); - } - while (b.isEven()) { - b.iushrn(1); - } +/** + * Based on bitcoind's EvalScript function, with the inner loop moved to + * Interpreter.prototype.step() + * bitcoind commit: b5d1b1092998bc95313856d535c632ea5a8f9104 + */ +Interpreter.prototype.evaluate = function() { + if (this.script.toBuffer().length > 10000) { + this.errstr = 'SCRIPT_ERR_SCRIPT_SIZE'; + return false; + } - var r = a.cmp(b); - if (r < 0) { - // Swap `a` and `b` to make `a` always bigger than `b` - var t = a; - a = b; - b = t; - } else if (r === 0 || b.cmpn(1) === 0) { - break; + try { + while (this.pc < this.script.chunks.length) { + var fSuccess = this.step(); + if (!fSuccess) { + return false; } + } - a.isub(b); - } while (true); + // Size limits + if (this.stack.length + this.altstack.length > 1000) { + this.errstr = 'SCRIPT_ERR_STACK_SIZE'; + return false; + } + } catch (e) { + this.errstr = 'SCRIPT_ERR_UNKNOWN_ERROR: ' + e; + return false; + } - return b.iushln(shift); - }; + if (this.vfExec.length > 0) { + this.errstr = 'SCRIPT_ERR_UNBALANCED_CONDITIONAL'; + return false; + } - // Invert number in the field F(num) - BN.prototype.invm = function invm (num) { - return this.egcd(num).a.umod(num); - }; - - BN.prototype.isEven = function isEven () { - return (this.words[0] & 1) === 0; - }; - - BN.prototype.isOdd = function isOdd () { - return (this.words[0] & 1) === 1; - }; - - // And first word and num - BN.prototype.andln = function andln (num) { - return this.words[0] & num; - }; - - // Increment at the bit position in-line - BN.prototype.bincn = function bincn (bit) { - assert(typeof bit === 'number'); - var r = bit % 26; - var s = (bit - r) / 26; - var q = 1 << r; + return true; +}; - // Fast case: bit is much higher than all existing words - if (this.length <= s) { - this._expand(s + 1); - this.words[s] |= q; - return this; - } +/** + * Checks a locktime parameter with the transaction's locktime. + * There are two times of nLockTime: lock-by-blockheight and lock-by-blocktime, + * distinguished by whether nLockTime < LOCKTIME_THRESHOLD = 500000000 + * + * See the corresponding code on bitcoin core: + * https://github.com/bitcoin/bitcoin/blob/ffd75adce01a78b3461b3ff05bcc2b530a9ce994/src/script/interpreter.cpp#L1129 + * + * @param {BN} nLockTime the locktime read from the script + * @return {boolean} true if the transaction's locktime is less than or equal to + * the transaction's locktime + */ +Interpreter.prototype.checkLockTime = function(nLockTime) { - // Add bit and propagate, if needed - var carry = q; - for (var i = s; carry !== 0 && i < this.length; i++) { - var w = this.words[i] | 0; - w += carry; - carry = w >>> 26; - w &= 0x3ffffff; - this.words[i] = w; - } - if (carry !== 0) { - this.words[i] = carry; - this.length++; - } - return this; - }; + // We want to compare apples to apples, so fail the script + // unless the type of nLockTime being tested is the same as + // the nLockTime in the transaction. + if (!( + (this.tx.nLockTime < Interpreter.LOCKTIME_THRESHOLD && nLockTime.lt(Interpreter.LOCKTIME_THRESHOLD_BN)) || + (this.tx.nLockTime >= Interpreter.LOCKTIME_THRESHOLD && nLockTime.gte(Interpreter.LOCKTIME_THRESHOLD_BN)) + )) { + return false; + } - BN.prototype.isZero = function isZero () { - return this.length === 1 && this.words[0] === 0; - }; + // Now that we know we're comparing apples-to-apples, the + // comparison is a simple numeric one. + if (nLockTime.gt(new BN(this.tx.nLockTime))) { + return false; + } - BN.prototype.cmpn = function cmpn (num) { - var negative = num < 0; + // Finally the nLockTime feature can be disabled and thus + // CHECKLOCKTIMEVERIFY bypassed if every txin has been + // finalized by setting nSequence to maxint. The + // transaction would be allowed into the blockchain, making + // the opcode ineffective. + // + // Testing if this vin is not final is sufficient to + // prevent this condition. Alternatively we could test all + // inputs, but testing just this input minimizes the data + // required to prove correct CHECKLOCKTIMEVERIFY execution. + if (!this.tx.inputs[this.nin].isFinal()) { + return false; + } - if (this.negative !== 0 && !negative) return -1; - if (this.negative === 0 && negative) return 1; + return true; +} - this.strip(); - var res; - if (this.length > 1) { - res = 1; - } else { - if (negative) { - num = -num; - } +/** + * Checks a sequence parameter with the transaction's sequence. + * @param {BN} nSequence the sequence read from the script + * @return {boolean} true if the transaction's sequence is less than or equal to + * the transaction's sequence + */ +Interpreter.prototype.checkSequence = function(nSequence) { - assert(num <= 0x3ffffff, 'Number is too big'); + // Relative lock times are supported by comparing the passed in operand to + // the sequence number of the input. + var txToSequence = this.tx.inputs[this.nin].sequenceNumber; - var w = this.words[0] | 0; - res = w === num ? 0 : w < num ? -1 : 1; + // Fail if the transaction's version number is not set high enough to + // trigger BIP 68 rules. + if (this.tx.version < 2) { + return false; } - if (this.negative !== 0) return -res | 0; - return res; - }; - // Compare two numbers and return: - // 1 - if `this` > `num` - // 0 - if `this` == `num` - // -1 - if `this` < `num` - BN.prototype.cmp = function cmp (num) { - if (this.negative !== 0 && num.negative === 0) return -1; - if (this.negative === 0 && num.negative !== 0) return 1; + // Sequence numbers with their most significant bit set are not consensus + // constrained. Testing that the transaction's sequence number do not have + // this bit set prevents using this property to get around a + // CHECKSEQUENCEVERIFY check. + if (txToSequence & SEQUENCE_LOCKTIME_DISABLE_FLAG) { + return false; + } - var res = this.ucmp(num); - if (this.negative !== 0) return -res | 0; - return res; - }; + // Mask off any bits that do not have consensus-enforced meaning before + // doing the integer comparisons + var nLockTimeMask = + Interpreter.SEQUENCE_LOCKTIME_TYPE_FLAG | Interpreter.SEQUENCE_LOCKTIME_MASK; + var txToSequenceMasked = new BN(txToSequence & nLockTimeMask); + var nSequenceMasked = nSequence.and(nLockTimeMask); - // Unsigned comparison - BN.prototype.ucmp = function ucmp (num) { - // At this point both numbers have the same sign - if (this.length > num.length) return 1; - if (this.length < num.length) return -1; + // There are two kinds of nSequence: lock-by-blockheight and + // lock-by-blocktime, distinguished by whether nSequenceMasked < + // CTxIn::SEQUENCE_LOCKTIME_TYPE_FLAG. + // + // We want to compare apples to apples, so fail the script unless the type + // of nSequenceMasked being tested is the same as the nSequenceMasked in the + // transaction. + var SEQUENCE_LOCKTIME_TYPE_FLAG_BN = new BN(Interpreter.SEQUENCE_LOCKTIME_TYPE_FLAG); - var res = 0; - for (var i = this.length - 1; i >= 0; i--) { - var a = this.words[i] | 0; - var b = num.words[i] | 0; + if (!((txToSequenceMasked.lt(SEQUENCE_LOCKTIME_TYPE_FLAG_BN) && + nSequenceMasked.lt(SEQUENCE_LOCKTIME_TYPE_FLAG_BN)) || + (txToSequenceMasked.gte(SEQUENCE_LOCKTIME_TYPE_FLAG_BN) && + nSequenceMasked.gte(SEQUENCE_LOCKTIME_TYPE_FLAG_BN)))) { + return false; + } - if (a === b) continue; - if (a < b) { - res = -1; - } else if (a > b) { - res = 1; - } - break; + // Now that we know we're comparing apples-to-apples, the comparison is a + // simple numeric one. + if (nSequenceMasked.gt(txToSequenceMasked)) { + return false; } - return res; - }; + return true; + } - BN.prototype.gtn = function gtn (num) { - return this.cmpn(num) === 1; - }; +/** + * Based on the inner loop of bitcoind's EvalScript function + * bitcoind commit: b5d1b1092998bc95313856d535c632ea5a8f9104 + */ +Interpreter.prototype.step = function() { + var fRequireMinimal = (this.flags & Interpreter.SCRIPT_VERIFY_MINIMALDATA) !== 0; - BN.prototype.gt = function gt (num) { - return this.cmp(num) === 1; - }; + //bool fExec = !count(vfExec.begin(), vfExec.end(), false); + var fExec = (this.vfExec.indexOf(false) === -1); + var buf, buf1, buf2, spliced, n, x1, x2, bn, bn1, bn2, bufSig, bufPubkey, subscript; + var sig, pubkey; + var fValue, fSuccess; - BN.prototype.gten = function gten (num) { - return this.cmpn(num) >= 0; - }; + // Read instruction + var chunk = this.script.chunks[this.pc]; + this.pc++; + var opcodenum = chunk.opcodenum; + if (_.isUndefined(opcodenum)) { + this.errstr = 'SCRIPT_ERR_UNDEFINED_OPCODE'; + return false; + } + if (chunk.buf && chunk.buf.length > Interpreter.MAX_SCRIPT_ELEMENT_SIZE) { + this.errstr = 'SCRIPT_ERR_PUSH_SIZE'; + return false; + } - BN.prototype.gte = function gte (num) { - return this.cmp(num) >= 0; - }; + // Note how Opcode.OP_RESERVED does not count towards the opcode limit. + if (opcodenum > Opcode.OP_16 && ++(this.nOpCount) > 201) { + this.errstr = 'SCRIPT_ERR_OP_COUNT'; + return false; + } - BN.prototype.ltn = function ltn (num) { - return this.cmpn(num) === -1; - }; - BN.prototype.lt = function lt (num) { - return this.cmp(num) === -1; - }; + if (opcodenum === Opcode.OP_CAT || + opcodenum === Opcode.OP_SUBSTR || + opcodenum === Opcode.OP_LEFT || + opcodenum === Opcode.OP_RIGHT || + opcodenum === Opcode.OP_INVERT || + opcodenum === Opcode.OP_AND || + opcodenum === Opcode.OP_OR || + opcodenum === Opcode.OP_XOR || + opcodenum === Opcode.OP_2MUL || + opcodenum === Opcode.OP_2DIV || + opcodenum === Opcode.OP_MUL || + opcodenum === Opcode.OP_DIV || + opcodenum === Opcode.OP_MOD || + opcodenum === Opcode.OP_LSHIFT || + opcodenum === Opcode.OP_RSHIFT) { + this.errstr = 'SCRIPT_ERR_DISABLED_OPCODE'; + return false; + } - BN.prototype.lten = function lten (num) { - return this.cmpn(num) <= 0; - }; + if (fExec && 0 <= opcodenum && opcodenum <= Opcode.OP_PUSHDATA4) { + if (fRequireMinimal && !this.script.checkMinimalPush(this.pc - 1)) { + this.errstr = 'SCRIPT_ERR_MINIMALDATA'; + return false; + } + if (!chunk.buf) { + this.stack.push(Interpreter.false); + } else if (chunk.len !== chunk.buf.length) { + throw new Error('Length of push value not equal to length of data'); + } else { + this.stack.push(chunk.buf); + } + } else if (fExec || (Opcode.OP_IF <= opcodenum && opcodenum <= Opcode.OP_ENDIF)) { + switch (opcodenum) { + // Push value + case Opcode.OP_1NEGATE: + case Opcode.OP_1: + case Opcode.OP_2: + case Opcode.OP_3: + case Opcode.OP_4: + case Opcode.OP_5: + case Opcode.OP_6: + case Opcode.OP_7: + case Opcode.OP_8: + case Opcode.OP_9: + case Opcode.OP_10: + case Opcode.OP_11: + case Opcode.OP_12: + case Opcode.OP_13: + case Opcode.OP_14: + case Opcode.OP_15: + case Opcode.OP_16: + { + // ( -- value) + // ScriptNum bn((int)opcode - (int)(Opcode.OP_1 - 1)); + n = opcodenum - (Opcode.OP_1 - 1); + buf = new BN(n).toScriptNumBuffer(); + this.stack.push(buf); + // The result of these opcodes should always be the minimal way to push the data + // they push, so no need for a CheckMinimalPush here. + } + break; - BN.prototype.lte = function lte (num) { - return this.cmp(num) <= 0; - }; - BN.prototype.eqn = function eqn (num) { - return this.cmpn(num) === 0; - }; + // + // Control + // + case Opcode.OP_NOP: + break; - BN.prototype.eq = function eq (num) { - return this.cmp(num) === 0; - }; + case Opcode.OP_NOP2: + case Opcode.OP_CHECKLOCKTIMEVERIFY: - // - // A reduce context, could be using montgomery or something better, depending - // on the `m` itself. - // - BN.red = function red (num) { - return new Red(num); - }; + if (!(this.flags & Interpreter.SCRIPT_VERIFY_CHECKLOCKTIMEVERIFY)) { + // not enabled; treat as a NOP2 + if (this.flags & Interpreter.SCRIPT_VERIFY_DISCOURAGE_UPGRADABLE_NOPS) { + this.errstr = 'SCRIPT_ERR_DISCOURAGE_UPGRADABLE_NOPS'; + return false; + } + break; + } - BN.prototype.toRed = function toRed (ctx) { - assert(!this.red, 'Already a number in reduction context'); - assert(this.negative === 0, 'red works only with positives'); - return ctx.convertTo(this)._forceRed(ctx); - }; + if (this.stack.length < 1) { + this.errstr = 'SCRIPT_ERR_INVALID_STACK_OPERATION'; + return false; + } - BN.prototype.fromRed = function fromRed () { - assert(this.red, 'fromRed works only with numbers in reduction context'); - return this.red.convertFrom(this); - }; + // Note that elsewhere numeric opcodes are limited to + // operands in the range -2**31+1 to 2**31-1, however it is + // legal for opcodes to produce results exceeding that + // range. This limitation is implemented by CScriptNum's + // default 4-byte limit. + // + // If we kept to that limit we'd have a year 2038 problem, + // even though the nLockTime field in transactions + // themselves is uint32 which only becomes meaningless + // after the year 2106. + // + // Thus as a special case we tell CScriptNum to accept up + // to 5-byte bignums, which are good until 2**39-1, well + // beyond the 2**32-1 limit of the nLockTime field itself. + var nLockTime = BN.fromScriptNumBuffer(this.stack[this.stack.length - 1], fRequireMinimal, 5); - BN.prototype._forceRed = function _forceRed (ctx) { - this.red = ctx; - return this; - }; + // In the rare event that the argument may be < 0 due to + // some arithmetic being done first, you can always use + // 0 MAX CHECKLOCKTIMEVERIFY. + if (nLockTime.lt(new BN(0))) { + this.errstr = 'SCRIPT_ERR_NEGATIVE_LOCKTIME'; + return false; + } - BN.prototype.forceRed = function forceRed (ctx) { - assert(!this.red, 'Already a number in reduction context'); - return this._forceRed(ctx); - }; + // Actually compare the specified lock time with the transaction. + if (!this.checkLockTime(nLockTime)) { + this.errstr = 'SCRIPT_ERR_UNSATISFIED_LOCKTIME'; + return false; + } + break; - BN.prototype.redAdd = function redAdd (num) { - assert(this.red, 'redAdd works only with red numbers'); - return this.red.add(this, num); - }; + case Opcode.OP_NOP3: + case Opcode.OP_CHECKSEQUENCEVERIFY: - BN.prototype.redIAdd = function redIAdd (num) { - assert(this.red, 'redIAdd works only with red numbers'); - return this.red.iadd(this, num); - }; + if (!(this.flags & Interpreter.SCRIPT_VERIFY_CHECKSEQUENCEVERIFY)) { + // not enabled; treat as a NOP3 + if (this.flags & Interpreter.SCRIPT_VERIFY_DISCOURAGE_UPGRADABLE_NOPS) { + this.errstr = 'SCRIPT_ERR_DISCOURAGE_UPGRADABLE_NOPS'; + return false; + } + break; + } - BN.prototype.redSub = function redSub (num) { - assert(this.red, 'redSub works only with red numbers'); - return this.red.sub(this, num); - }; + if (this.stack.length < 1) { + this.errstr = 'SCRIPT_ERR_INVALID_STACK_OPERATION'; + return false; + } - BN.prototype.redISub = function redISub (num) { - assert(this.red, 'redISub works only with red numbers'); - return this.red.isub(this, num); - }; - BN.prototype.redShl = function redShl (num) { - assert(this.red, 'redShl works only with red numbers'); - return this.red.shl(this, num); - }; + // nSequence, like nLockTime, is a 32-bit unsigned + // integer field. See the comment in CHECKLOCKTIMEVERIFY + // regarding 5-byte numeric operands. - BN.prototype.redMul = function redMul (num) { - assert(this.red, 'redMul works only with red numbers'); - this.red._verify2(this, num); - return this.red.mul(this, num); - }; + var nSequence = BN.fromScriptNumBuffer(this.stack[this.stack.length - 1], fRequireMinimal, 5); - BN.prototype.redIMul = function redIMul (num) { - assert(this.red, 'redMul works only with red numbers'); - this.red._verify2(this, num); - return this.red.imul(this, num); - }; - BN.prototype.redSqr = function redSqr () { - assert(this.red, 'redSqr works only with red numbers'); - this.red._verify1(this); - return this.red.sqr(this); - }; + // In the rare event that the argument may be < 0 due to + // some arithmetic being done first, you can always use + // 0 MAX CHECKSEQUENCEVERIFY. + if (nSequence.lt(new BN(0))) { + this.errstr = 'SCRIPT_ERR_NEGATIVE_LOCKTIME'; + return false; + } - BN.prototype.redISqr = function redISqr () { - assert(this.red, 'redISqr works only with red numbers'); - this.red._verify1(this); - return this.red.isqr(this); - }; + // To provide for future soft-fork extensibility, if the + // operand has the disabled lock-time flag set, + // CHECKSEQUENCEVERIFY behaves as a NOP. + if ((nSequence & + Interpreter.SEQUENCE_LOCKTIME_DISABLE_FLAG) != 0) { + break; + } - // Square root over p - BN.prototype.redSqrt = function redSqrt () { - assert(this.red, 'redSqrt works only with red numbers'); - this.red._verify1(this); - return this.red.sqrt(this); - }; + // Actually compare the specified lock time with the transaction. + if (!this.checkSequence(nSequence)) { + this.errstr = 'SCRIPT_ERR_UNSATISFIED_LOCKTIME'; + return false; + } + break; - BN.prototype.redInvm = function redInvm () { - assert(this.red, 'redInvm works only with red numbers'); - this.red._verify1(this); - return this.red.invm(this); - }; - // Return negative clone of `this` % `red modulo` - BN.prototype.redNeg = function redNeg () { - assert(this.red, 'redNeg works only with red numbers'); - this.red._verify1(this); - return this.red.neg(this); - }; - BN.prototype.redPow = function redPow (num) { - assert(this.red && !num.red, 'redPow(normalNum)'); - this.red._verify1(this); - return this.red.pow(this, num); - }; + case Opcode.OP_NOP1: + case Opcode.OP_NOP4: + case Opcode.OP_NOP5: + case Opcode.OP_NOP6: + case Opcode.OP_NOP7: + case Opcode.OP_NOP8: + case Opcode.OP_NOP9: + case Opcode.OP_NOP10: + { + if (this.flags & Interpreter.SCRIPT_VERIFY_DISCOURAGE_UPGRADABLE_NOPS) { + this.errstr = 'SCRIPT_ERR_DISCOURAGE_UPGRADABLE_NOPS'; + return false; + } + } + break; - // Prime numbers with efficient reduction - var primes = { - k256: null, - p224: null, - p192: null, - p25519: null - }; + case Opcode.OP_IF: + case Opcode.OP_NOTIF: + { + // if [statements] [else [statements]] endif + // bool fValue = false; + fValue = false; + if (fExec) { + if (this.stack.length < 1) { + this.errstr = 'SCRIPT_ERR_UNBALANCED_CONDITIONAL'; + return false; + } - // Pseudo-Mersenne prime - function MPrime (name, p) { - // P = 2 ^ N - K - this.name = name; - this.p = new BN(p, 16); - this.n = this.p.bitLength(); - this.k = new BN(1).iushln(this.n).isub(this.p); + buf = this.stack[this.stack.length - 1]; - this.tmp = this._tmp(); - } - - MPrime.prototype._tmp = function _tmp () { - var tmp = new BN(null); - tmp.words = new Array(Math.ceil(this.n / 13)); - return tmp; - }; - - MPrime.prototype.ireduce = function ireduce (num) { - // Assumes that `num` is less than `P^2` - // num = HI * (2 ^ N - K) + HI * K + LO = HI * K + LO (mod P) - var r = num; - var rlen; - - do { - this.split(r, this.tmp); - r = this.imulK(r); - r = r.iadd(this.tmp); - rlen = r.bitLength(); - } while (rlen > this.n); + if (this.flags & Interpreter.SCRIPT_VERIFY_MINIMALIF) { + buf = this.stack[this.stack.length - 1]; + if (buf.length > 1) { + this.errstr = 'SCRIPT_ERR_MINIMALIF'; + return false; + } + if (buf.length == 1 && buf[0]!=1) { + this.errstr = 'SCRIPT_ERR_MINIMALIF'; + return false; + } + } + fValue = Interpreter.castToBool(buf); + if (opcodenum === Opcode.OP_NOTIF) { + fValue = !fValue; + } + this.stack.pop(); + } + this.vfExec.push(fValue); + } + break; - var cmp = rlen < this.n ? -1 : r.ucmp(this.p); - if (cmp === 0) { - r.words[0] = 0; - r.length = 1; - } else if (cmp > 0) { - r.isub(this.p); - } else { - r.strip(); - } + case Opcode.OP_ELSE: + { + if (this.vfExec.length === 0) { + this.errstr = 'SCRIPT_ERR_UNBALANCED_CONDITIONAL'; + return false; + } + this.vfExec[this.vfExec.length - 1] = !this.vfExec[this.vfExec.length - 1]; + } + break; - return r; - }; + case Opcode.OP_ENDIF: + { + if (this.vfExec.length === 0) { + this.errstr = 'SCRIPT_ERR_UNBALANCED_CONDITIONAL'; + return false; + } + this.vfExec.pop(); + } + break; - MPrime.prototype.split = function split (input, out) { - input.iushrn(this.n, 0, out); - }; + case Opcode.OP_VERIFY: + { + // (true -- ) or + // (false -- false) and return + if (this.stack.length < 1) { + this.errstr = 'SCRIPT_ERR_INVALID_STACK_OPERATION'; + return false; + } + buf = this.stack[this.stack.length - 1]; + fValue = Interpreter.castToBool(buf); + if (fValue) { + this.stack.pop(); + } else { + this.errstr = 'SCRIPT_ERR_VERIFY'; + return false; + } + } + break; - MPrime.prototype.imulK = function imulK (num) { - return num.imul(this.k); - }; + case Opcode.OP_RETURN: + { + this.errstr = 'SCRIPT_ERR_OP_RETURN'; + return false; + } + break; - function K256 () { - MPrime.call( - this, - 'k256', - 'ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff fffffffe fffffc2f'); - } - inherits(K256, MPrime); - K256.prototype.split = function split (input, output) { - // 256 = 9 * 26 + 22 - var mask = 0x3fffff; + // + // Stack ops + // + case Opcode.OP_TOALTSTACK: + { + if (this.stack.length < 1) { + this.errstr = 'SCRIPT_ERR_INVALID_STACK_OPERATION'; + return false; + } + this.altstack.push(this.stack.pop()); + } + break; - var outLen = Math.min(input.length, 9); - for (var i = 0; i < outLen; i++) { - output.words[i] = input.words[i]; - } - output.length = outLen; + case Opcode.OP_FROMALTSTACK: + { + if (this.altstack.length < 1) { + this.errstr = 'SCRIPT_ERR_INVALID_ALTSTACK_OPERATION'; + return false; + } + this.stack.push(this.altstack.pop()); + } + break; - if (input.length <= 9) { - input.words[0] = 0; - input.length = 1; - return; - } + case Opcode.OP_2DROP: + { + // (x1 x2 -- ) + if (this.stack.length < 2) { + this.errstr = 'SCRIPT_ERR_INVALID_STACK_OPERATION'; + return false; + } + this.stack.pop(); + this.stack.pop(); + } + break; - // Shift by 9 limbs - var prev = input.words[9]; - output.words[output.length++] = prev & mask; + case Opcode.OP_2DUP: + { + // (x1 x2 -- x1 x2 x1 x2) + if (this.stack.length < 2) { + this.errstr = 'SCRIPT_ERR_INVALID_STACK_OPERATION'; + return false; + } + buf1 = this.stack[this.stack.length - 2]; + buf2 = this.stack[this.stack.length - 1]; + this.stack.push(buf1); + this.stack.push(buf2); + } + break; - for (i = 10; i < input.length; i++) { - var next = input.words[i] | 0; - input.words[i - 10] = ((next & mask) << 4) | (prev >>> 22); - prev = next; - } - prev >>>= 22; - input.words[i - 10] = prev; - if (prev === 0 && input.length > 10) { - input.length -= 10; - } else { - input.length -= 9; - } - }; + case Opcode.OP_3DUP: + { + // (x1 x2 x3 -- x1 x2 x3 x1 x2 x3) + if (this.stack.length < 3) { + this.errstr = 'SCRIPT_ERR_INVALID_STACK_OPERATION'; + return false; + } + buf1 = this.stack[this.stack.length - 3]; + buf2 = this.stack[this.stack.length - 2]; + var buf3 = this.stack[this.stack.length - 1]; + this.stack.push(buf1); + this.stack.push(buf2); + this.stack.push(buf3); + } + break; - K256.prototype.imulK = function imulK (num) { - // K = 0x1000003d1 = [ 0x40, 0x3d1 ] - num.words[num.length] = 0; - num.words[num.length + 1] = 0; - num.length += 2; + case Opcode.OP_2OVER: + { + // (x1 x2 x3 x4 -- x1 x2 x3 x4 x1 x2) + if (this.stack.length < 4) { + this.errstr = 'SCRIPT_ERR_INVALID_STACK_OPERATION'; + return false; + } + buf1 = this.stack[this.stack.length - 4]; + buf2 = this.stack[this.stack.length - 3]; + this.stack.push(buf1); + this.stack.push(buf2); + } + break; - // bounded at: 0x40 * 0x3ffffff + 0x3d0 = 0x100000390 - var lo = 0; - for (var i = 0; i < num.length; i++) { - var w = num.words[i] | 0; - lo += w * 0x3d1; - num.words[i] = lo & 0x3ffffff; - lo = w * 0x40 + ((lo / 0x4000000) | 0); - } + case Opcode.OP_2ROT: + { + // (x1 x2 x3 x4 x5 x6 -- x3 x4 x5 x6 x1 x2) + if (this.stack.length < 6) { + this.errstr = 'SCRIPT_ERR_INVALID_STACK_OPERATION'; + return false; + } + spliced = this.stack.splice(this.stack.length - 6, 2); + this.stack.push(spliced[0]); + this.stack.push(spliced[1]); + } + break; - // Fast length reduction - if (num.words[num.length - 1] === 0) { - num.length--; - if (num.words[num.length - 1] === 0) { - num.length--; - } - } - return num; - }; + case Opcode.OP_2SWAP: + { + // (x1 x2 x3 x4 -- x3 x4 x1 x2) + if (this.stack.length < 4) { + this.errstr = 'SCRIPT_ERR_INVALID_STACK_OPERATION'; + return false; + } + spliced = this.stack.splice(this.stack.length - 4, 2); + this.stack.push(spliced[0]); + this.stack.push(spliced[1]); + } + break; - function P224 () { - MPrime.call( - this, - 'p224', - 'ffffffff ffffffff ffffffff ffffffff 00000000 00000000 00000001'); - } - inherits(P224, MPrime); + case Opcode.OP_IFDUP: + { + // (x - 0 | x x) + if (this.stack.length < 1) { + this.errstr = 'SCRIPT_ERR_INVALID_STACK_OPERATION'; + return false; + } + buf = this.stack[this.stack.length - 1]; + fValue = Interpreter.castToBool(buf); + if (fValue) { + this.stack.push(buf); + } + } + break; - function P192 () { - MPrime.call( - this, - 'p192', - 'ffffffff ffffffff ffffffff fffffffe ffffffff ffffffff'); - } - inherits(P192, MPrime); + case Opcode.OP_DEPTH: + { + // -- stacksize + buf = new BN(this.stack.length).toScriptNumBuffer(); + this.stack.push(buf); + } + break; - function P25519 () { - // 2 ^ 255 - 19 - MPrime.call( - this, - '25519', - '7fffffffffffffff ffffffffffffffff ffffffffffffffff ffffffffffffffed'); - } - inherits(P25519, MPrime); + case Opcode.OP_DROP: + { + // (x -- ) + if (this.stack.length < 1) { + this.errstr = 'SCRIPT_ERR_INVALID_STACK_OPERATION'; + return false; + } + this.stack.pop(); + } + break; - P25519.prototype.imulK = function imulK (num) { - // K = 0x13 - var carry = 0; - for (var i = 0; i < num.length; i++) { - var hi = (num.words[i] | 0) * 0x13 + carry; - var lo = hi & 0x3ffffff; - hi >>>= 26; + case Opcode.OP_DUP: + { + // (x -- x x) + if (this.stack.length < 1) { + this.errstr = 'SCRIPT_ERR_INVALID_STACK_OPERATION'; + return false; + } + this.stack.push(this.stack[this.stack.length - 1]); + } + break; - num.words[i] = lo; - carry = hi; - } - if (carry !== 0) { - num.words[num.length++] = carry; - } - return num; - }; + case Opcode.OP_NIP: + { + // (x1 x2 -- x2) + if (this.stack.length < 2) { + this.errstr = 'SCRIPT_ERR_INVALID_STACK_OPERATION'; + return false; + } + this.stack.splice(this.stack.length - 2, 1); + } + break; - // Exported mostly for testing purposes, use plain name instead - BN._prime = function prime (name) { - // Cached version of prime - if (primes[name]) return primes[name]; + case Opcode.OP_OVER: + { + // (x1 x2 -- x1 x2 x1) + if (this.stack.length < 2) { + this.errstr = 'SCRIPT_ERR_INVALID_STACK_OPERATION'; + return false; + } + this.stack.push(this.stack[this.stack.length - 2]); + } + break; - var prime; - if (name === 'k256') { - prime = new K256(); - } else if (name === 'p224') { - prime = new P224(); - } else if (name === 'p192') { - prime = new P192(); - } else if (name === 'p25519') { - prime = new P25519(); - } else { - throw new Error('Unknown prime ' + name); - } - primes[name] = prime; + case Opcode.OP_PICK: + case Opcode.OP_ROLL: + { + // (xn ... x2 x1 x0 n - xn ... x2 x1 x0 xn) + // (xn ... x2 x1 x0 n - ... x2 x1 x0 xn) + if (this.stack.length < 2) { + this.errstr = 'SCRIPT_ERR_INVALID_STACK_OPERATION'; + return false; + } + buf = this.stack[this.stack.length - 1]; + bn = BN.fromScriptNumBuffer(buf, fRequireMinimal); + n = bn.toNumber(); + this.stack.pop(); + if (n < 0 || n >= this.stack.length) { + this.errstr = 'SCRIPT_ERR_INVALID_STACK_OPERATION'; + return false; + } + buf = this.stack[this.stack.length - n - 1]; + if (opcodenum === Opcode.OP_ROLL) { + this.stack.splice(this.stack.length - n - 1, 1); + } + this.stack.push(buf); + } + break; - return prime; - }; + case Opcode.OP_ROT: + { + // (x1 x2 x3 -- x2 x3 x1) + // x2 x1 x3 after first swap + // x2 x3 x1 after second swap + if (this.stack.length < 3) { + this.errstr = 'SCRIPT_ERR_INVALID_STACK_OPERATION'; + return false; + } + x1 = this.stack[this.stack.length - 3]; + x2 = this.stack[this.stack.length - 2]; + var x3 = this.stack[this.stack.length - 1]; + this.stack[this.stack.length - 3] = x2; + this.stack[this.stack.length - 2] = x3; + this.stack[this.stack.length - 1] = x1; + } + break; - // - // Base reduction engine - // - function Red (m) { - if (typeof m === 'string') { - var prime = BN._prime(m); - this.m = prime.p; - this.prime = prime; - } else { - assert(m.gtn(1), 'modulus must be greater than 1'); - this.m = m; - this.prime = null; - } - } + case Opcode.OP_SWAP: + { + // (x1 x2 -- x2 x1) + if (this.stack.length < 2) { + this.errstr = 'SCRIPT_ERR_INVALID_STACK_OPERATION'; + return false; + } + x1 = this.stack[this.stack.length - 2]; + x2 = this.stack[this.stack.length - 1]; + this.stack[this.stack.length - 2] = x2; + this.stack[this.stack.length - 1] = x1; + } + break; - Red.prototype._verify1 = function _verify1 (a) { - assert(a.negative === 0, 'red works only with positives'); - assert(a.red, 'red works only with red numbers'); - }; + case Opcode.OP_TUCK: + { + // (x1 x2 -- x2 x1 x2) + if (this.stack.length < 2) { + this.errstr = 'SCRIPT_ERR_INVALID_STACK_OPERATION'; + return false; + } + this.stack.splice(this.stack.length - 2, 0, this.stack[this.stack.length - 1]); + } + break; - Red.prototype._verify2 = function _verify2 (a, b) { - assert((a.negative | b.negative) === 0, 'red works only with positives'); - assert(a.red && a.red === b.red, - 'red works only with red numbers'); - }; - Red.prototype.imod = function imod (a) { - if (this.prime) return this.prime.ireduce(a)._forceRed(this); - return a.umod(this.m)._forceRed(this); - }; + case Opcode.OP_SIZE: + { + // (in -- in size) + if (this.stack.length < 1) { + this.errstr = 'SCRIPT_ERR_INVALID_STACK_OPERATION'; + return false; + } + bn = new BN(this.stack[this.stack.length - 1].length); + this.stack.push(bn.toScriptNumBuffer()); + } + break; - Red.prototype.neg = function neg (a) { - if (a.isZero()) { - return a.clone(); - } - return this.m.sub(a)._forceRed(this); - }; + // + // Bitwise logic + // + case Opcode.OP_EQUAL: + case Opcode.OP_EQUALVERIFY: + //case Opcode.OP_NOTEQUAL: // use Opcode.OP_NUMNOTEQUAL + { + // (x1 x2 - bool) + if (this.stack.length < 2) { + this.errstr = 'SCRIPT_ERR_INVALID_STACK_OPERATION'; + return false; + } + buf1 = this.stack[this.stack.length - 2]; + buf2 = this.stack[this.stack.length - 1]; + var fEqual = buf1.toString('hex') === buf2.toString('hex'); + this.stack.pop(); + this.stack.pop(); + this.stack.push(fEqual ? Interpreter.true : Interpreter.false); + if (opcodenum === Opcode.OP_EQUALVERIFY) { + if (fEqual) { + this.stack.pop(); + } else { + this.errstr = 'SCRIPT_ERR_EQUALVERIFY'; + return false; + } + } + } + break; - Red.prototype.add = function add (a, b) { - this._verify2(a, b); - var res = a.add(b); - if (res.cmp(this.m) >= 0) { - res.isub(this.m); - } - return res._forceRed(this); - }; - - Red.prototype.iadd = function iadd (a, b) { - this._verify2(a, b); + // + // Numeric + // + case Opcode.OP_1ADD: + case Opcode.OP_1SUB: + case Opcode.OP_NEGATE: + case Opcode.OP_ABS: + case Opcode.OP_NOT: + case Opcode.OP_0NOTEQUAL: + { + // (in -- out) + if (this.stack.length < 1) { + this.errstr = 'SCRIPT_ERR_INVALID_STACK_OPERATION'; + return false; + } + buf = this.stack[this.stack.length - 1]; + bn = BN.fromScriptNumBuffer(buf, fRequireMinimal); + switch (opcodenum) { + case Opcode.OP_1ADD: + bn = bn.add(BN.One); + break; + case Opcode.OP_1SUB: + bn = bn.sub(BN.One); + break; + case Opcode.OP_NEGATE: + bn = bn.neg(); + break; + case Opcode.OP_ABS: + if (bn.cmp(BN.Zero) < 0) { + bn = bn.neg(); + } + break; + case Opcode.OP_NOT: + bn = new BN((bn.cmp(BN.Zero) === 0) + 0); + break; + case Opcode.OP_0NOTEQUAL: + bn = new BN((bn.cmp(BN.Zero) !== 0) + 0); + break; + //default: assert(!'invalid opcode'); break; // TODO: does this ever occur? + } + this.stack.pop(); + this.stack.push(bn.toScriptNumBuffer()); + } + break; - var res = a.iadd(b); - if (res.cmp(this.m) >= 0) { - res.isub(this.m); - } - return res; - }; + case Opcode.OP_ADD: + case Opcode.OP_SUB: + case Opcode.OP_BOOLAND: + case Opcode.OP_BOOLOR: + case Opcode.OP_NUMEQUAL: + case Opcode.OP_NUMEQUALVERIFY: + case Opcode.OP_NUMNOTEQUAL: + case Opcode.OP_LESSTHAN: + case Opcode.OP_GREATERTHAN: + case Opcode.OP_LESSTHANOREQUAL: + case Opcode.OP_GREATERTHANOREQUAL: + case Opcode.OP_MIN: + case Opcode.OP_MAX: + { + // (x1 x2 -- out) + if (this.stack.length < 2) { + this.errstr = 'SCRIPT_ERR_INVALID_STACK_OPERATION'; + return false; + } + bn1 = BN.fromScriptNumBuffer(this.stack[this.stack.length - 2], fRequireMinimal); + bn2 = BN.fromScriptNumBuffer(this.stack[this.stack.length - 1], fRequireMinimal); + bn = new BN(0); - Red.prototype.sub = function sub (a, b) { - this._verify2(a, b); + switch (opcodenum) { + case Opcode.OP_ADD: + bn = bn1.add(bn2); + break; - var res = a.sub(b); - if (res.cmpn(0) < 0) { - res.iadd(this.m); - } - return res._forceRed(this); - }; + case Opcode.OP_SUB: + bn = bn1.sub(bn2); + break; - Red.prototype.isub = function isub (a, b) { - this._verify2(a, b); + // case Opcode.OP_BOOLAND: bn = (bn1 != bnZero && bn2 != bnZero); break; + case Opcode.OP_BOOLAND: + bn = new BN(((bn1.cmp(BN.Zero) !== 0) && (bn2.cmp(BN.Zero) !== 0)) + 0); + break; + // case Opcode.OP_BOOLOR: bn = (bn1 != bnZero || bn2 != bnZero); break; + case Opcode.OP_BOOLOR: + bn = new BN(((bn1.cmp(BN.Zero) !== 0) || (bn2.cmp(BN.Zero) !== 0)) + 0); + break; + // case Opcode.OP_NUMEQUAL: bn = (bn1 == bn2); break; + case Opcode.OP_NUMEQUAL: + bn = new BN((bn1.cmp(bn2) === 0) + 0); + break; + // case Opcode.OP_NUMEQUALVERIFY: bn = (bn1 == bn2); break; + case Opcode.OP_NUMEQUALVERIFY: + bn = new BN((bn1.cmp(bn2) === 0) + 0); + break; + // case Opcode.OP_NUMNOTEQUAL: bn = (bn1 != bn2); break; + case Opcode.OP_NUMNOTEQUAL: + bn = new BN((bn1.cmp(bn2) !== 0) + 0); + break; + // case Opcode.OP_LESSTHAN: bn = (bn1 < bn2); break; + case Opcode.OP_LESSTHAN: + bn = new BN((bn1.cmp(bn2) < 0) + 0); + break; + // case Opcode.OP_GREATERTHAN: bn = (bn1 > bn2); break; + case Opcode.OP_GREATERTHAN: + bn = new BN((bn1.cmp(bn2) > 0) + 0); + break; + // case Opcode.OP_LESSTHANOREQUAL: bn = (bn1 <= bn2); break; + case Opcode.OP_LESSTHANOREQUAL: + bn = new BN((bn1.cmp(bn2) <= 0) + 0); + break; + // case Opcode.OP_GREATERTHANOREQUAL: bn = (bn1 >= bn2); break; + case Opcode.OP_GREATERTHANOREQUAL: + bn = new BN((bn1.cmp(bn2) >= 0) + 0); + break; + case Opcode.OP_MIN: + bn = (bn1.cmp(bn2) < 0 ? bn1 : bn2); + break; + case Opcode.OP_MAX: + bn = (bn1.cmp(bn2) > 0 ? bn1 : bn2); + break; + // default: assert(!'invalid opcode'); break; //TODO: does this ever occur? + } + this.stack.pop(); + this.stack.pop(); + this.stack.push(bn.toScriptNumBuffer()); - var res = a.isub(b); - if (res.cmpn(0) < 0) { - res.iadd(this.m); - } - return res; - }; + if (opcodenum === Opcode.OP_NUMEQUALVERIFY) { + // if (CastToBool(stacktop(-1))) + if (Interpreter.castToBool(this.stack[this.stack.length - 1])) { + this.stack.pop(); + } else { + this.errstr = 'SCRIPT_ERR_NUMEQUALVERIFY'; + return false; + } + } + } + break; - Red.prototype.shl = function shl (a, num) { - this._verify1(a); - return this.imod(a.ushln(num)); - }; + case Opcode.OP_WITHIN: + { + // (x min max -- out) + if (this.stack.length < 3) { + this.errstr = 'SCRIPT_ERR_INVALID_STACK_OPERATION'; + return false; + } + bn1 = BN.fromScriptNumBuffer(this.stack[this.stack.length - 3], fRequireMinimal); + bn2 = BN.fromScriptNumBuffer(this.stack[this.stack.length - 2], fRequireMinimal); + var bn3 = BN.fromScriptNumBuffer(this.stack[this.stack.length - 1], fRequireMinimal); + //bool fValue = (bn2 <= bn1 && bn1 < bn3); + fValue = (bn2.cmp(bn1) <= 0) && (bn1.cmp(bn3) < 0); + this.stack.pop(); + this.stack.pop(); + this.stack.pop(); + this.stack.push(fValue ? Interpreter.true : Interpreter.false); + } + break; - Red.prototype.imul = function imul (a, b) { - this._verify2(a, b); - return this.imod(a.imul(b)); - }; - Red.prototype.mul = function mul (a, b) { - this._verify2(a, b); - return this.imod(a.mul(b)); - }; + // + // Crypto + // + case Opcode.OP_RIPEMD160: + case Opcode.OP_SHA1: + case Opcode.OP_SHA256: + case Opcode.OP_HASH160: + case Opcode.OP_HASH256: + { + // (in -- hash) + if (this.stack.length < 1) { + this.errstr = 'SCRIPT_ERR_INVALID_STACK_OPERATION'; + return false; + } + buf = this.stack[this.stack.length - 1]; + //valtype vchHash((opcode == Opcode.OP_RIPEMD160 || + // opcode == Opcode.OP_SHA1 || opcode == Opcode.OP_HASH160) ? 20 : 32); + var bufHash; + if (opcodenum === Opcode.OP_RIPEMD160) { + bufHash = Hash.ripemd160(buf); + } else if (opcodenum === Opcode.OP_SHA1) { + bufHash = Hash.sha1(buf); + } else if (opcodenum === Opcode.OP_SHA256) { + bufHash = Hash.sha256(buf); + } else if (opcodenum === Opcode.OP_HASH160) { + bufHash = Hash.sha256ripemd160(buf); + } else if (opcodenum === Opcode.OP_HASH256) { + bufHash = Hash.sha256sha256(buf); + } + this.stack.pop(); + this.stack.push(bufHash); + } + break; - Red.prototype.isqr = function isqr (a) { - return this.imul(a, a.clone()); - }; + case Opcode.OP_CODESEPARATOR: + { + // Hash starts after the code separator + this.pbegincodehash = this.pc; + } + break; - Red.prototype.sqr = function sqr (a) { - return this.mul(a, a); - }; + case Opcode.OP_CHECKSIG: + case Opcode.OP_CHECKSIGVERIFY: + { + // (sig pubkey -- bool) + if (this.stack.length < 2) { + this.errstr = 'SCRIPT_ERR_INVALID_STACK_OPERATION'; + return false; + } - Red.prototype.sqrt = function sqrt (a) { - if (a.isZero()) return a.clone(); + bufSig = this.stack[this.stack.length - 2]; + bufPubkey = this.stack[this.stack.length - 1]; + if (!this.checkSignatureEncoding(bufSig) || !this.checkPubkeyEncoding(bufPubkey)) { + return false; + } - var mod3 = this.m.andln(3); - assert(mod3 % 2 === 1); + // Subset of script starting at the most recent codeseparator + // CScript scriptCode(pbegincodehash, pend); + subscript = new Script().set({ + chunks: this.script.chunks.slice(this.pbegincodehash) + }); - // Fast case - if (mod3 === 3) { - var pow = this.m.add(new BN(1)).iushrn(2); - return this.pow(a, pow); - } + // Drop the signature, since there's no way for a signature to sign itself + var tmpScript = new Script().add(bufSig); + subscript.findAndDelete(tmpScript); - // Tonelli-Shanks algorithm (Totally unoptimized and slow) - // - // Find Q and S, that Q * 2 ^ S = (P - 1) - var q = this.m.subn(1); - var s = 0; - while (!q.isZero() && q.andln(1) === 0) { - s++; - q.iushrn(1); - } - assert(!q.isZero()); + try { + sig = Signature.fromTxFormat(bufSig); + pubkey = PublicKey.fromBuffer(bufPubkey, false); + fSuccess = this.tx.verifySignature(sig, pubkey, this.nin, subscript, this.sigversion, this.satoshis); + } catch (e) { + //invalid sig or pubkey + fSuccess = false; + } - var one = new BN(1).toRed(this); - var nOne = one.redNeg(); + if (!fSuccess && (this.flags & Interpreter.SCRIPT_VERIFY_NULLFAIL) && + bufSig.length) { + this.errstr = 'SCRIPT_ERR_NULLFAIL'; + return false; + } - // Find quadratic non-residue - // NOTE: Max is such because of generalized Riemann hypothesis. - var lpow = this.m.subn(1).iushrn(1); - var z = this.m.bitLength(); - z = new BN(2 * z * z).toRed(this); + this.stack.pop(); + this.stack.pop(); - while (this.pow(z, lpow).cmp(nOne) !== 0) { - z.redIAdd(nOne); - } + // stack.push_back(fSuccess ? vchTrue : vchFalse); + this.stack.push(fSuccess ? Interpreter.true : Interpreter.false); + if (opcodenum === Opcode.OP_CHECKSIGVERIFY) { + if (fSuccess) { + this.stack.pop(); + } else { + this.errstr = 'SCRIPT_ERR_CHECKSIGVERIFY'; + return false; + } + } + } + break; - var c = this.pow(z, q); - var r = this.pow(a, q.addn(1).iushrn(1)); - var t = this.pow(a, q); - var m = s; - while (t.cmp(one) !== 0) { - var tmp = t; - for (var i = 0; tmp.cmp(one) !== 0; i++) { - tmp = tmp.redSqr(); - } - assert(i < m); - var b = this.pow(c, new BN(1).iushln(m - i - 1)); + case Opcode.OP_CHECKMULTISIG: + case Opcode.OP_CHECKMULTISIGVERIFY: + { + // ([sig ...] num_of_signatures [pubkey ...] num_of_pubkeys -- bool) - r = r.redMul(b); - c = b.redSqr(); - t = t.redMul(c); - m = i; - } + var i = 1; + if (this.stack.length < i) { + this.errstr = 'SCRIPT_ERR_INVALID_STACK_OPERATION'; + return false; + } - return r; - }; + var nKeysCount = BN.fromScriptNumBuffer(this.stack[this.stack.length - i], fRequireMinimal).toNumber(); + if (nKeysCount < 0 || nKeysCount > 20) { + this.errstr = 'SCRIPT_ERR_PUBKEY_COUNT'; + return false; + } + this.nOpCount += nKeysCount; + if (this.nOpCount > 201) { + this.errstr = 'SCRIPT_ERR_OP_COUNT'; + return false; + } + // int ikey = ++i; + var ikey = ++i; + i += nKeysCount; - Red.prototype.invm = function invm (a) { - var inv = a._invmp(this.m); - if (inv.negative !== 0) { - inv.negative = 0; - return this.imod(inv).redNeg(); - } else { - return this.imod(inv); - } - }; + // ikey2 is the position of last non-signature item in + // the stack. Top stack item = 1. With + // SCRIPT_VERIFY_NULLFAIL, this is used for cleanup if + // operation fails. + var ikey2 = nKeysCount + 2; - Red.prototype.pow = function pow (a, num) { - if (num.isZero()) return new BN(1).toRed(this); - if (num.cmpn(1) === 0) return a.clone(); + if (this.stack.length < i) { + this.errstr = 'SCRIPT_ERR_INVALID_STACK_OPERATION'; + return false; + } - var windowSize = 4; - var wnd = new Array(1 << windowSize); - wnd[0] = new BN(1).toRed(this); - wnd[1] = a; - for (var i = 2; i < wnd.length; i++) { - wnd[i] = this.mul(wnd[i - 1], a); - } + var nSigsCount = BN.fromScriptNumBuffer(this.stack[this.stack.length - i], fRequireMinimal).toNumber(); + if (nSigsCount < 0 || nSigsCount > nKeysCount) { + this.errstr = 'SCRIPT_ERR_SIG_COUNT'; + return false; + } + // int isig = ++i; + var isig = ++i; + i += nSigsCount; + if (this.stack.length < i) { + this.errstr = 'SCRIPT_ERR_INVALID_STACK_OPERATION'; + return false; + } - var res = wnd[0]; - var current = 0; - var currentLen = 0; - var start = num.bitLength() % 26; - if (start === 0) { - start = 26; - } + // Subset of script starting at the most recent codeseparator + subscript = new Script().set({ + chunks: this.script.chunks.slice(this.pbegincodehash) + }); - for (i = num.length - 1; i >= 0; i--) { - var word = num.words[i]; - for (var j = start - 1; j >= 0; j--) { - var bit = (word >> j) & 1; - if (res !== wnd[0]) { - res = this.sqr(res); - } + // Drop the signatures, since there's no way for a signature to sign itself + for (var k = 0; k < nSigsCount; k++) { + bufSig = this.stack[this.stack.length - isig - k]; + subscript.findAndDelete(new Script().add(bufSig)); + } - if (bit === 0 && current === 0) { - currentLen = 0; - continue; - } + fSuccess = true; + while (fSuccess && nSigsCount > 0) { + // valtype& vchSig = stacktop(-isig); + bufSig = this.stack[this.stack.length - isig]; + // valtype& vchPubKey = stacktop(-ikey); + bufPubkey = this.stack[this.stack.length - ikey]; - current <<= 1; - current |= bit; - currentLen++; - if (currentLen !== windowSize && (i !== 0 || j !== 0)) continue; + if (!this.checkSignatureEncoding(bufSig) || !this.checkPubkeyEncoding(bufPubkey)) { + return false; + } - res = this.mul(res, wnd[current]); - currentLen = 0; - current = 0; - } - start = 26; - } + var fOk; + try { + sig = Signature.fromTxFormat(bufSig); + pubkey = PublicKey.fromBuffer(bufPubkey, false); + fOk = this.tx.verifySignature(sig, pubkey, this.nin, subscript, this.sigversion, this.satoshis); + } catch (e) { + //invalid sig or pubkey + fOk = false; + } - return res; - }; + if (fOk) { + isig++; + nSigsCount--; + } + ikey++; + nKeysCount--; - Red.prototype.convertTo = function convertTo (num) { - var r = num.umod(this.m); + // If there are more signatures left than keys left, + // then too many signatures have failed + if (nSigsCount > nKeysCount) { + fSuccess = false; + } + } - return r === num ? r.clone() : r; - }; - Red.prototype.convertFrom = function convertFrom (num) { - var res = num.clone(); - res.red = null; - return res; - }; + // Clean up stack of actual arguments + while (i-- > 1) { + if (!fSuccess && (this.flags & Interpreter.SCRIPT_VERIFY_NULLFAIL) && + !ikey2 && this.stack[this.stack.length - 1].length) { - // - // Montgomery method engine - // + this.errstr = 'SCRIPT_ERR_NULLFAIL'; + return false; + } - BN.mont = function mont (num) { - return new Mont(num); - }; + if (ikey2 > 0) { + ikey2--; + } - function Mont (m) { - Red.call(this, m); + this.stack.pop(); + } - this.shift = this.m.bitLength(); - if (this.shift % 26 !== 0) { - this.shift += 26 - (this.shift % 26); - } + // A bug causes CHECKMULTISIG to consume one extra argument + // whose contents were not checked in any way. + // + // Unfortunately this is a potential source of mutability, + // so optionally verify it is exactly equal to zero prior + // to removing it from the stack. + if (this.stack.length < 1) { + this.errstr = 'SCRIPT_ERR_INVALID_STACK_OPERATION'; + return false; + } + if ((this.flags & Interpreter.SCRIPT_VERIFY_NULLDUMMY) && this.stack[this.stack.length - 1].length) { + this.errstr = 'SCRIPT_ERR_SIG_NULLDUMMY'; + return false; + } + this.stack.pop(); - this.r = new BN(1).iushln(this.shift); - this.r2 = this.imod(this.r.sqr()); - this.rinv = this.r._invmp(this.m); + this.stack.push(fSuccess ? Interpreter.true : Interpreter.false); - this.minv = this.rinv.mul(this.r).isubn(1).div(this.m); - this.minv = this.minv.umod(this.r); - this.minv = this.r.sub(this.minv); - } - inherits(Mont, Red); - - Mont.prototype.convertTo = function convertTo (num) { - return this.imod(num.ushln(this.shift)); - }; - - Mont.prototype.convertFrom = function convertFrom (num) { - var r = this.imod(num.mul(this.rinv)); - r.red = null; - return r; - }; - - Mont.prototype.imul = function imul (a, b) { - if (a.isZero() || b.isZero()) { - a.words[0] = 0; - a.length = 1; - return a; - } - - var t = a.imul(b); - var c = t.maskn(this.shift).mul(this.minv).imaskn(this.shift).mul(this.m); - var u = t.isub(c).iushrn(this.shift); - var res = u; - - if (u.cmp(this.m) >= 0) { - res = u.isub(this.m); - } else if (u.cmpn(0) < 0) { - res = u.iadd(this.m); - } - - return res._forceRed(this); - }; - - Mont.prototype.mul = function mul (a, b) { - if (a.isZero() || b.isZero()) return new BN(0)._forceRed(this); + if (opcodenum === Opcode.OP_CHECKMULTISIGVERIFY) { + if (fSuccess) { + this.stack.pop(); + } else { + this.errstr = 'SCRIPT_ERR_CHECKMULTISIGVERIFY'; + return false; + } + } + } + break; - var t = a.mul(b); - var c = t.maskn(this.shift).mul(this.minv).imaskn(this.shift).mul(this.m); - var u = t.isub(c).iushrn(this.shift); - var res = u; - if (u.cmp(this.m) >= 0) { - res = u.isub(this.m); - } else if (u.cmpn(0) < 0) { - res = u.iadd(this.m); + default: + this.errstr = 'SCRIPT_ERR_BAD_OPCODE'; + return false; } + } - return res._forceRed(this); - }; - - Mont.prototype.invm = function invm (a) { - // (AR)^-1 * R^2 = (A^-1 * R^-1) * R^2 = A^-1 * R - var res = this.imod(a._invmp(this.m).mul(this.r2)); - return res._forceRed(this); - }; -})(typeof module === 'undefined' || module, this); + return true; +}; -},{"buffer":22}],21:[function(require,module,exports){ -var r; -module.exports = function rand(len) { - if (!r) - r = new Rand(null); +}).call(this,require("buffer").Buffer) +},{"../crypto/bn":6,"../crypto/hash":8,"../crypto/signature":11,"../opcode":23,"../publickey":25,"../transaction":29,"./script":28,"buffer":100,"lodash":156}],28:[function(require,module,exports){ +(function (Buffer){ +'use strict'; - return r.generate(len); -}; +var Address = require('../address'); +var BufferReader = require('../encoding/bufferreader'); +var BufferWriter = require('../encoding/bufferwriter'); +var Hash = require('../crypto/hash'); +var Opcode = require('../opcode'); +var PublicKey = require('../publickey'); +var Signature = require('../crypto/signature'); +var Networks = require('../networks'); +var $ = require('../util/preconditions'); +var _ = require('lodash'); +var errors = require('../errors'); +var buffer = require('buffer'); +var BufferUtil = require('../util/buffer'); +var JSUtil = require('../util/js'); -function Rand(rand) { - this.rand = rand; -} -module.exports.Rand = Rand; +/** + * A bitcoin transaction script. Each transaction's inputs and outputs + * has a script that is evaluated to validate it's spending. + * + * See https://en.bitcoin.it/wiki/Script + * + * @constructor + * @param {Object|string|Buffer=} from optional data to populate script + */ +var Script = function Script(from) { + if (!(this instanceof Script)) { + return new Script(from); + } + this.chunks = []; -Rand.prototype.generate = function generate(len) { - return this._rand(len); + if (BufferUtil.isBuffer(from)) { + return Script.fromBuffer(from); + } else if (from instanceof Address) { + return Script.fromAddress(from); + } else if (from instanceof Script) { + return Script.fromBuffer(from.toBuffer()); + } else if (_.isString(from)) { + return Script.fromString(from); + } else if (_.isObject(from) && _.isArray(from.chunks)) { + this.set(from); + } }; -// Emulate crypto API using randy -Rand.prototype._rand = function _rand(n) { - if (this.rand.getBytes) - return this.rand.getBytes(n); - - var res = new Uint8Array(n); - for (var i = 0; i < res.length; i++) - res[i] = this.rand.getByte(); - return res; +Script.prototype.set = function(obj) { + $.checkArgument(_.isObject(obj)); + $.checkArgument(_.isArray(obj.chunks)); + this.chunks = obj.chunks; + return this; }; -if (typeof self === 'object') { - if (self.crypto && self.crypto.getRandomValues) { - // Modern browsers - Rand.prototype._rand = function _rand(n) { - var arr = new Uint8Array(n); - self.crypto.getRandomValues(arr); - return arr; - }; - } else if (self.msCrypto && self.msCrypto.getRandomValues) { - // IE - Rand.prototype._rand = function _rand(n) { - var arr = new Uint8Array(n); - self.msCrypto.getRandomValues(arr); - return arr; - }; +Script.fromBuffer = function(buffer) { + var script = new Script(); + script.chunks = []; - // Safari's WebWorkers do not have `crypto` - } else if (typeof window === 'object') { - // Old junk - Rand.prototype._rand = function() { - throw new Error('Not implemented yet'); - }; - } -} else { - // Node.js or Web worker with no crypto support - try { - var crypto = require('crypto'); - if (typeof crypto.randomBytes !== 'function') - throw new Error('Not supported'); + var br = new BufferReader(buffer); + while (!br.finished()) { + try { + var opcodenum = br.readUInt8(); - Rand.prototype._rand = function _rand(n) { - return crypto.randomBytes(n); - }; - } catch (e) { + var len, buf; + if (opcodenum > 0 && opcodenum < Opcode.OP_PUSHDATA1) { + len = opcodenum; + script.chunks.push({ + buf: br.read(len), + len: len, + opcodenum: opcodenum + }); + } else if (opcodenum === Opcode.OP_PUSHDATA1) { + len = br.readUInt8(); + buf = br.read(len); + script.chunks.push({ + buf: buf, + len: len, + opcodenum: opcodenum + }); + } else if (opcodenum === Opcode.OP_PUSHDATA2) { + len = br.readUInt16LE(); + buf = br.read(len); + script.chunks.push({ + buf: buf, + len: len, + opcodenum: opcodenum + }); + } else if (opcodenum === Opcode.OP_PUSHDATA4) { + len = br.readUInt32LE(); + buf = br.read(len); + script.chunks.push({ + buf: buf, + len: len, + opcodenum: opcodenum + }); + } else { + script.chunks.push({ + opcodenum: opcodenum + }); + } + } catch (e) { + if (e instanceof RangeError) { + throw new errors.Script.InvalidBuffer(buffer.toString('hex')); + } + throw e; + } } -} - -},{"crypto":22}],22:[function(require,module,exports){ -},{}],23:[function(require,module,exports){ -// based on the aes implimentation in triple sec -// https://github.com/keybase/triplesec -// which is in turn based on the one from crypto-js -// https://code.google.com/p/crypto-js/ + return script; +}; -var Buffer = require('safe-buffer').Buffer +Script.prototype.toBuffer = function() { + var bw = new BufferWriter(); -function asUInt32Array (buf) { - if (!Buffer.isBuffer(buf)) buf = Buffer.from(buf) + for (var i = 0; i < this.chunks.length; i++) { + var chunk = this.chunks[i]; + var opcodenum = chunk.opcodenum; + bw.writeUInt8(chunk.opcodenum); + if (chunk.buf) { + if (opcodenum < Opcode.OP_PUSHDATA1) { + bw.write(chunk.buf); + } else if (opcodenum === Opcode.OP_PUSHDATA1) { + bw.writeUInt8(chunk.len); + bw.write(chunk.buf); + } else if (opcodenum === Opcode.OP_PUSHDATA2) { + bw.writeUInt16LE(chunk.len); + bw.write(chunk.buf); + } else if (opcodenum === Opcode.OP_PUSHDATA4) { + bw.writeUInt32LE(chunk.len); + bw.write(chunk.buf); + } + } + } - var len = (buf.length / 4) | 0 - var out = new Array(len) + return bw.concat(); +}; - for (var i = 0; i < len; i++) { - out[i] = buf.readUInt32BE(i * 4) - } +Script.fromASM = function(str) { + var script = new Script(); + script.chunks = []; - return out -} + var tokens = str.split(' '); + var i = 0; + while (i < tokens.length) { + var token = tokens[i]; + var opcode = Opcode(token); + var opcodenum = opcode.toNumber(); -function scrubVec (v) { - for (var i = 0; i < v.length; v++) { - v[i] = 0 + if (_.isUndefined(opcodenum)) { + var buf = Buffer.from(tokens[i], 'hex'); + script.chunks.push({ + buf: buf, + len: buf.length, + opcodenum: buf.length + }); + i = i + 1; + } else if (opcodenum === Opcode.OP_PUSHDATA1 || + opcodenum === Opcode.OP_PUSHDATA2 || + opcodenum === Opcode.OP_PUSHDATA4) { + script.chunks.push({ + buf: Buffer.from(tokens[i + 2], 'hex'), + len: parseInt(tokens[i + 1]), + opcodenum: opcodenum + }); + i = i + 3; + } else { + script.chunks.push({ + opcodenum: opcodenum + }); + i = i + 1; + } } -} - -function cryptBlock (M, keySchedule, SUB_MIX, SBOX, nRounds) { - var SUB_MIX0 = SUB_MIX[0] - var SUB_MIX1 = SUB_MIX[1] - var SUB_MIX2 = SUB_MIX[2] - var SUB_MIX3 = SUB_MIX[3] + return script; +}; - var s0 = M[0] ^ keySchedule[0] - var s1 = M[1] ^ keySchedule[1] - var s2 = M[2] ^ keySchedule[2] - var s3 = M[3] ^ keySchedule[3] - var t0, t1, t2, t3 - var ksRow = 4 +Script.fromHex = function(str) { + return new Script(new buffer.Buffer(str, 'hex')); +}; - for (var round = 1; round < nRounds; round++) { - t0 = SUB_MIX0[s0 >>> 24] ^ SUB_MIX1[(s1 >>> 16) & 0xff] ^ SUB_MIX2[(s2 >>> 8) & 0xff] ^ SUB_MIX3[s3 & 0xff] ^ keySchedule[ksRow++] - t1 = SUB_MIX0[s1 >>> 24] ^ SUB_MIX1[(s2 >>> 16) & 0xff] ^ SUB_MIX2[(s3 >>> 8) & 0xff] ^ SUB_MIX3[s0 & 0xff] ^ keySchedule[ksRow++] - t2 = SUB_MIX0[s2 >>> 24] ^ SUB_MIX1[(s3 >>> 16) & 0xff] ^ SUB_MIX2[(s0 >>> 8) & 0xff] ^ SUB_MIX3[s1 & 0xff] ^ keySchedule[ksRow++] - t3 = SUB_MIX0[s3 >>> 24] ^ SUB_MIX1[(s0 >>> 16) & 0xff] ^ SUB_MIX2[(s1 >>> 8) & 0xff] ^ SUB_MIX3[s2 & 0xff] ^ keySchedule[ksRow++] - s0 = t0 - s1 = t1 - s2 = t2 - s3 = t3 +Script.fromString = function(str) { + if (JSUtil.isHexa(str) || str.length === 0) { + return new Script(new buffer.Buffer(str, 'hex')); } + var script = new Script(); + script.chunks = []; - t0 = ((SBOX[s0 >>> 24] << 24) | (SBOX[(s1 >>> 16) & 0xff] << 16) | (SBOX[(s2 >>> 8) & 0xff] << 8) | SBOX[s3 & 0xff]) ^ keySchedule[ksRow++] - t1 = ((SBOX[s1 >>> 24] << 24) | (SBOX[(s2 >>> 16) & 0xff] << 16) | (SBOX[(s3 >>> 8) & 0xff] << 8) | SBOX[s0 & 0xff]) ^ keySchedule[ksRow++] - t2 = ((SBOX[s2 >>> 24] << 24) | (SBOX[(s3 >>> 16) & 0xff] << 16) | (SBOX[(s0 >>> 8) & 0xff] << 8) | SBOX[s1 & 0xff]) ^ keySchedule[ksRow++] - t3 = ((SBOX[s3 >>> 24] << 24) | (SBOX[(s0 >>> 16) & 0xff] << 16) | (SBOX[(s1 >>> 8) & 0xff] << 8) | SBOX[s2 & 0xff]) ^ keySchedule[ksRow++] - t0 = t0 >>> 0 - t1 = t1 >>> 0 - t2 = t2 >>> 0 - t3 = t3 >>> 0 - - return [t0, t1, t2, t3] -} + var tokens = str.split(' '); + var i = 0; + while (i < tokens.length) { + var token = tokens[i]; + var opcode = Opcode(token); + var opcodenum = opcode.toNumber(); -// AES constants -var RCON = [0x00, 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36] -var G = (function () { - // Compute double table - var d = new Array(256) - for (var j = 0; j < 256; j++) { - if (j < 128) { - d[j] = j << 1 + if (_.isUndefined(opcodenum)) { + opcodenum = parseInt(token); + if (opcodenum > 0 && opcodenum < Opcode.OP_PUSHDATA1) { + script.chunks.push({ + buf: Buffer.from(tokens[i + 1].slice(2), 'hex'), + len: opcodenum, + opcodenum: opcodenum + }); + i = i + 2; + } else { + throw new Error('Invalid script: ' + JSON.stringify(str)); + } + } else if (opcodenum === Opcode.OP_PUSHDATA1 || + opcodenum === Opcode.OP_PUSHDATA2 || + opcodenum === Opcode.OP_PUSHDATA4) { + if (tokens[i + 2].slice(0, 2) !== '0x') { + throw new Error('Pushdata data must start with 0x'); + } + script.chunks.push({ + buf: Buffer.from(tokens[i + 2].slice(2), 'hex'), + len: parseInt(tokens[i + 1]), + opcodenum: opcodenum + }); + i = i + 3; } else { - d[j] = (j << 1) ^ 0x11b + script.chunks.push({ + opcodenum: opcodenum + }); + i = i + 1; } } + return script; +}; - var SBOX = [] - var INV_SBOX = [] - var SUB_MIX = [[], [], [], []] - var INV_SUB_MIX = [[], [], [], []] - - // Walk GF(2^8) - var x = 0 - var xi = 0 - for (var i = 0; i < 256; ++i) { - // Compute sbox - var sx = xi ^ (xi << 1) ^ (xi << 2) ^ (xi << 3) ^ (xi << 4) - sx = (sx >>> 8) ^ (sx & 0xff) ^ 0x63 - SBOX[x] = sx - INV_SBOX[sx] = x - - // Compute multiplication - var x2 = d[x] - var x4 = d[x2] - var x8 = d[x4] - - // Compute sub bytes, mix columns tables - var t = (d[sx] * 0x101) ^ (sx * 0x1010100) - SUB_MIX[0][x] = (t << 24) | (t >>> 8) - SUB_MIX[1][x] = (t << 16) | (t >>> 16) - SUB_MIX[2][x] = (t << 8) | (t >>> 24) - SUB_MIX[3][x] = t - - // Compute inv sub bytes, inv mix columns tables - t = (x8 * 0x1010101) ^ (x4 * 0x10001) ^ (x2 * 0x101) ^ (x * 0x1010100) - INV_SUB_MIX[0][sx] = (t << 24) | (t >>> 8) - INV_SUB_MIX[1][sx] = (t << 16) | (t >>> 16) - INV_SUB_MIX[2][sx] = (t << 8) | (t >>> 24) - INV_SUB_MIX[3][sx] = t - - if (x === 0) { - x = xi = 1 +Script.prototype._chunkToString = function(chunk, type) { + var opcodenum = chunk.opcodenum; + var asm = (type === 'asm'); + var str = ''; + if (!chunk.buf) { + // no data chunk + if (typeof Opcode.reverseMap[opcodenum] !== 'undefined') { + if (asm) { + // A few cases where the opcode name differs from reverseMap + // aside from 1 to 16 data pushes. + if (opcodenum === 0) { + // OP_0 -> 0 + str = str + ' 0'; + } else if(opcodenum === 79) { + // OP_1NEGATE -> 1 + str = str + ' -1'; + } else { + str = str + ' ' + Opcode(opcodenum).toString(); + } + } else { + str = str + ' ' + Opcode(opcodenum).toString(); + } } else { - x = x2 ^ d[d[d[x8 ^ x2]]] - xi ^= d[d[xi]] + var numstr = opcodenum.toString(16); + if (numstr.length % 2 !== 0) { + numstr = '0' + numstr; + } + if (asm) { + str = str + ' ' + numstr; + } else { + str = str + ' ' + '0x' + numstr; + } + } + } else { + // data chunk + if (!asm && opcodenum === Opcode.OP_PUSHDATA1 || + opcodenum === Opcode.OP_PUSHDATA2 || + opcodenum === Opcode.OP_PUSHDATA4) { + str = str + ' ' + Opcode(opcodenum).toString(); + } + if (chunk.len > 0) { + if (asm) { + str = str + ' ' + chunk.buf.toString('hex'); + } else { + str = str + ' ' + chunk.len + ' ' + '0x' + chunk.buf.toString('hex'); + } } } + return str; +}; - return { - SBOX: SBOX, - INV_SBOX: INV_SBOX, - SUB_MIX: SUB_MIX, - INV_SUB_MIX: INV_SUB_MIX +Script.prototype.toASM = function() { + var str = ''; + for (var i = 0; i < this.chunks.length; i++) { + var chunk = this.chunks[i]; + str += this._chunkToString(chunk, 'asm'); } -})() - -function AES (key) { - this._key = asUInt32Array(key) - this._reset() -} -AES.blockSize = 4 * 4 -AES.keySize = 256 / 8 -AES.prototype.blockSize = AES.blockSize -AES.prototype.keySize = AES.keySize -AES.prototype._reset = function () { - var keyWords = this._key - var keySize = keyWords.length - var nRounds = keySize + 6 - var ksRows = (nRounds + 1) * 4 + return str.substr(1); +}; - var keySchedule = [] - for (var k = 0; k < keySize; k++) { - keySchedule[k] = keyWords[k] +Script.prototype.toString = function() { + var str = ''; + for (var i = 0; i < this.chunks.length; i++) { + var chunk = this.chunks[i]; + str += this._chunkToString(chunk); } - for (k = keySize; k < ksRows; k++) { - var t = keySchedule[k - 1] + return str.substr(1); +}; - if (k % keySize === 0) { - t = (t << 8) | (t >>> 24) - t = - (G.SBOX[t >>> 24] << 24) | - (G.SBOX[(t >>> 16) & 0xff] << 16) | - (G.SBOX[(t >>> 8) & 0xff] << 8) | - (G.SBOX[t & 0xff]) +Script.prototype.toHex = function() { + return this.toBuffer().toString('hex'); +}; - t ^= RCON[(k / keySize) | 0] << 24 - } else if (keySize > 6 && k % keySize === 4) { - t = - (G.SBOX[t >>> 24] << 24) | - (G.SBOX[(t >>> 16) & 0xff] << 16) | - (G.SBOX[(t >>> 8) & 0xff] << 8) | - (G.SBOX[t & 0xff]) - } +Script.prototype.inspect = function() { + return ''; +}; - keySchedule[k] = keySchedule[k - keySize] ^ t - } +// script classification methods - var invKeySchedule = [] - for (var ik = 0; ik < ksRows; ik++) { - var ksR = ksRows - ik - var tt = keySchedule[ksR - (ik % 4 ? 0 : 4)] +/** + * @returns {boolean} if this is a pay to pubkey hash output script + */ +Script.prototype.isPublicKeyHashOut = function() { + return !!(this.chunks.length === 5 && + this.chunks[0].opcodenum === Opcode.OP_DUP && + this.chunks[1].opcodenum === Opcode.OP_HASH160 && + this.chunks[2].buf && + this.chunks[2].buf.length === 20 && + this.chunks[3].opcodenum === Opcode.OP_EQUALVERIFY && + this.chunks[4].opcodenum === Opcode.OP_CHECKSIG); +}; - if (ik < 4 || ksR <= 4) { - invKeySchedule[ik] = tt - } else { - invKeySchedule[ik] = - G.INV_SUB_MIX[0][G.SBOX[tt >>> 24]] ^ - G.INV_SUB_MIX[1][G.SBOX[(tt >>> 16) & 0xff]] ^ - G.INV_SUB_MIX[2][G.SBOX[(tt >>> 8) & 0xff]] ^ - G.INV_SUB_MIX[3][G.SBOX[tt & 0xff]] +/** + * @returns {boolean} if this is a pay to public key hash input script + */ +Script.prototype.isPublicKeyHashIn = function() { + if (this.chunks.length === 2) { + var signatureBuf = this.chunks[0].buf; + var pubkeyBuf = this.chunks[1].buf; + if (signatureBuf && + signatureBuf.length && + signatureBuf[0] === 0x30 && + pubkeyBuf && + pubkeyBuf.length + ) { + var version = pubkeyBuf[0]; + if ((version === 0x04 || + version === 0x06 || + version === 0x07) && pubkeyBuf.length === 65) { + return true; + } else if ((version === 0x03 || version === 0x02) && pubkeyBuf.length === 33) { + return true; + } } } + return false; +}; - this._nRounds = nRounds - this._keySchedule = keySchedule - this._invKeySchedule = invKeySchedule -} - -AES.prototype.encryptBlockRaw = function (M) { - M = asUInt32Array(M) - return cryptBlock(M, this._keySchedule, G.SUB_MIX, G.SBOX, this._nRounds) -} - -AES.prototype.encryptBlock = function (M) { - var out = this.encryptBlockRaw(M) - var buf = Buffer.allocUnsafe(16) - buf.writeUInt32BE(out[0], 0) - buf.writeUInt32BE(out[1], 4) - buf.writeUInt32BE(out[2], 8) - buf.writeUInt32BE(out[3], 12) - return buf -} +Script.prototype.getPublicKey = function() { + $.checkState(this.isPublicKeyOut(), 'Can\'t retrieve PublicKey from a non-PK output'); + return this.chunks[0].buf; +}; -AES.prototype.decryptBlock = function (M) { - M = asUInt32Array(M) +Script.prototype.getPublicKeyHash = function() { + $.checkState(this.isPublicKeyHashOut(), 'Can\'t retrieve PublicKeyHash from a non-PKH output'); + return this.chunks[2].buf; +}; - // swap - var m1 = M[1] - M[1] = M[3] - M[3] = m1 +/** + * @returns {boolean} if this is a public key output script + */ +Script.prototype.isPublicKeyOut = function() { + if (this.chunks.length === 2 && + this.chunks[0].buf && + this.chunks[0].buf.length && + this.chunks[1].opcodenum === Opcode.OP_CHECKSIG) { + var pubkeyBuf = this.chunks[0].buf; + var version = pubkeyBuf[0]; + var isVersion = false; + if ((version === 0x04 || + version === 0x06 || + version === 0x07) && pubkeyBuf.length === 65) { + isVersion = true; + } else if ((version === 0x03 || version === 0x02) && pubkeyBuf.length === 33) { + isVersion = true; + } + if (isVersion) { + return PublicKey.isValid(pubkeyBuf); + } + } + return false; +}; - var out = cryptBlock(M, this._invKeySchedule, G.INV_SUB_MIX, G.INV_SBOX, this._nRounds) - var buf = Buffer.allocUnsafe(16) - buf.writeUInt32BE(out[0], 0) - buf.writeUInt32BE(out[3], 4) - buf.writeUInt32BE(out[2], 8) - buf.writeUInt32BE(out[1], 12) - return buf -} +/** + * @returns {boolean} if this is a pay to public key input script + */ +Script.prototype.isPublicKeyIn = function() { + if (this.chunks.length === 1) { + var signatureBuf = this.chunks[0].buf; + if (signatureBuf && + signatureBuf.length && + signatureBuf[0] === 0x30) { + return true; + } + } + return false; +}; -AES.prototype.scrub = function () { - scrubVec(this._keySchedule) - scrubVec(this._invKeySchedule) - scrubVec(this._key) -} +/** + * @returns {boolean} if this is a p2sh output script + */ +Script.prototype.isScriptHashOut = function() { + var buf = this.toBuffer(); + return (buf.length === 23 && + buf[0] === Opcode.OP_HASH160 && + buf[1] === 0x14 && + buf[buf.length - 1] === Opcode.OP_EQUAL); +}; -module.exports.AES = AES +/** + * @returns {boolean} if this is a p2wsh output script + */ +Script.prototype.isWitnessScriptHashOut = function() { + var buf = this.toBuffer(); + return (buf.length === 34 && buf[0] === 0 && buf[1] === 32); +}; -},{"safe-buffer":148}],24:[function(require,module,exports){ -var aes = require('./aes') -var Buffer = require('safe-buffer').Buffer -var Transform = require('cipher-base') -var inherits = require('inherits') -var GHASH = require('./ghash') -var xor = require('buffer-xor') -var incr32 = require('./incr32') +/** + * @returns {boolean} if this is a p2wpkh output script + */ +Script.prototype.isWitnessPublicKeyHashOut = function() { + var buf = this.toBuffer(); + return (buf.length === 22 && buf[0] === 0 && buf[1] === 20); +}; -function xorTest (a, b) { - var out = 0 - if (a.length !== b.length) out++ +/** + * @param {Object=} values - The return values + * @param {Number} values.version - Set with the witness version + * @param {Buffer} values.program - Set with the witness program + * @returns {boolean} if this is a p2wpkh output script + */ +Script.prototype.isWitnessProgram = function(values) { + if (!values) { + values = {}; + } + var buf = this.toBuffer(); + if (buf.length < 4 || buf.length > 42) { + return false; + } + if (buf[0] !== Opcode.OP_0 && !(buf[0] >= Opcode.OP_1 && buf[0] <= Opcode.OP_16)) { + return false; + } - var len = Math.min(a.length, b.length) - for (var i = 0; i < len; ++i) { - out += (a[i] ^ b[i]) + if (buf.length === buf[1] + 2) { + values.version = buf[0]; + values.program = buf.slice(2, buf.length); + return true; } - return out -} + return false; +}; -function calcIv (self, iv, ck) { - if (iv.length === 12) { - self._finID = Buffer.concat([iv, Buffer.from([0, 0, 0, 1])]) - return Buffer.concat([iv, Buffer.from([0, 0, 0, 2])]) +/** + * @returns {boolean} if this is a p2sh input script + * Note that these are frequently indistinguishable from pubkeyhashin + */ +Script.prototype.isScriptHashIn = function() { + if (this.chunks.length <= 1) { + return false; } - var ghash = new GHASH(ck) - var len = iv.length - var toPad = len % 16 - ghash.update(iv) - if (toPad) { - toPad = 16 - toPad - ghash.update(Buffer.alloc(toPad, 0)) + var redeemChunk = this.chunks[this.chunks.length - 1]; + var redeemBuf = redeemChunk.buf; + if (!redeemBuf) { + return false; } - ghash.update(Buffer.alloc(8, 0)) - var ivBits = len * 8 - var tail = Buffer.alloc(8) - tail.writeUIntBE(ivBits, 0, 8) - ghash.update(tail) - self._finID = ghash.state - var out = Buffer.from(self._finID) - incr32(out) - return out -} -function StreamCipher (mode, key, iv, decrypt) { - Transform.call(this) - var h = Buffer.alloc(4, 0) + var redeemScript; + try { + redeemScript = Script.fromBuffer(redeemBuf); + } catch (e) { + if (e instanceof errors.Script.InvalidBuffer) { + return false; + } + throw e; + } + var type = redeemScript.classify(); + return type !== Script.types.UNKNOWN; +}; - this._cipher = new aes.AES(key) - var ck = this._cipher.encryptBlock(h) - this._ghash = new GHASH(ck) - iv = calcIv(this, iv, ck) +/** + * @returns {boolean} if this is a mutlsig output script + */ +Script.prototype.isMultisigOut = function() { + return (this.chunks.length > 3 && + Opcode.isSmallIntOp(this.chunks[0].opcodenum) && + this.chunks.slice(1, this.chunks.length - 2).every(function(obj) { + return obj.buf && BufferUtil.isBuffer(obj.buf); + }) && + Opcode.isSmallIntOp(this.chunks[this.chunks.length - 2].opcodenum) && + this.chunks[this.chunks.length - 1].opcodenum === Opcode.OP_CHECKMULTISIG); +}; - this._prev = Buffer.from(iv) - this._cache = Buffer.allocUnsafe(0) - this._secCache = Buffer.allocUnsafe(0) - this._decrypt = decrypt - this._alen = 0 - this._len = 0 - this._mode = mode - this._authTag = null - this._called = false -} +/** + * @returns {boolean} if this is a multisig input script + */ +Script.prototype.isMultisigIn = function() { + return this.chunks.length >= 2 && + this.chunks[0].opcodenum === 0 && + this.chunks.slice(1, this.chunks.length).every(function(obj) { + return obj.buf && + BufferUtil.isBuffer(obj.buf) && + Signature.isTxDER(obj.buf); + }); +}; -inherits(StreamCipher, Transform) +/** + * @returns {boolean} true if this is a valid standard OP_RETURN output + */ +Script.prototype.isDataOut = function() { + return this.chunks.length >= 1 && + this.chunks[0].opcodenum === Opcode.OP_RETURN && + (this.chunks.length === 1 || + (this.chunks.length === 2 && + this.chunks[1].buf && + this.chunks[1].buf.length <= Script.OP_RETURN_STANDARD_SIZE && + this.chunks[1].length === this.chunks.len)); +}; -StreamCipher.prototype._update = function (chunk) { - if (!this._called && this._alen) { - var rump = 16 - (this._alen % 16) - if (rump < 16) { - rump = Buffer.alloc(rump, 0) - this._ghash.update(rump) +/** + * Retrieve the associated data for this script. + * In the case of a pay to public key hash or P2SH, return the hash. + * In the case of a standard OP_RETURN, return the data + * @returns {Buffer} + */ +Script.prototype.getData = function() { + if (this.isDataOut() || this.isScriptHashOut()) { + if (_.isUndefined(this.chunks[1])) { + return Buffer.alloc(0); + } else { + return Buffer.from(this.chunks[1].buf); } } - - this._called = true - var out = this._mode.encrypt(this, chunk) - if (this._decrypt) { - this._ghash.update(chunk) - } else { - this._ghash.update(out) + if (this.isPublicKeyHashOut()) { + return Buffer.from(this.chunks[2].buf); } - this._len += chunk.length - return out -} - -StreamCipher.prototype._final = function () { - if (this._decrypt && !this._authTag) throw new Error('Unsupported state or unable to authenticate data') - - var tag = xor(this._ghash.final(this._alen * 8, this._len * 8), this._cipher.encryptBlock(this._finID)) - if (this._decrypt && xorTest(tag, this._authTag)) throw new Error('Unsupported state or unable to authenticate data') - - this._authTag = tag - this._cipher.scrub() -} - -StreamCipher.prototype.getAuthTag = function getAuthTag () { - if (this._decrypt || !Buffer.isBuffer(this._authTag)) throw new Error('Attempting to get auth tag in unsupported state') + throw new Error('Unrecognized script type to get data from'); +}; - return this._authTag -} +/** + * @returns {boolean} if the script is only composed of data pushing + * opcodes or small int opcodes (OP_0, OP_1, ..., OP_16) + */ +Script.prototype.isPushOnly = function() { + return _.every(this.chunks, function(chunk) { + return chunk.opcodenum <= Opcode.OP_16; + }); +}; -StreamCipher.prototype.setAuthTag = function setAuthTag (tag) { - if (!this._decrypt) throw new Error('Attempting to set auth tag in unsupported state') - this._authTag = tag -} +Script.types = {}; +Script.types.UNKNOWN = 'Unknown'; +Script.types.PUBKEY_OUT = 'Pay to public key'; +Script.types.PUBKEY_IN = 'Spend from public key'; +Script.types.PUBKEYHASH_OUT = 'Pay to public key hash'; +Script.types.PUBKEYHASH_IN = 'Spend from public key hash'; +Script.types.SCRIPTHASH_OUT = 'Pay to script hash'; +Script.types.SCRIPTHASH_IN = 'Spend from script hash'; +Script.types.MULTISIG_OUT = 'Pay to multisig'; +Script.types.MULTISIG_IN = 'Spend from multisig'; +Script.types.DATA_OUT = 'Data push'; -StreamCipher.prototype.setAAD = function setAAD (buf) { - if (this._called) throw new Error('Attempting to set AAD in unsupported state') +Script.OP_RETURN_STANDARD_SIZE = 80; - this._ghash.update(buf) - this._alen += buf.length -} +/** + * @returns {object} The Script type if it is a known form, + * or Script.UNKNOWN if it isn't + */ +Script.prototype.classify = function() { + if (this._isInput) { + return this.classifyInput(); + } else if (this._isOutput) { + return this.classifyOutput(); + } else { + var outputType = this.classifyOutput(); + return outputType != Script.types.UNKNOWN ? outputType : this.classifyInput(); + } +}; -module.exports = StreamCipher +Script.outputIdentifiers = {}; +Script.outputIdentifiers.PUBKEY_OUT = Script.prototype.isPublicKeyOut; +Script.outputIdentifiers.PUBKEYHASH_OUT = Script.prototype.isPublicKeyHashOut; +Script.outputIdentifiers.MULTISIG_OUT = Script.prototype.isMultisigOut; +Script.outputIdentifiers.SCRIPTHASH_OUT = Script.prototype.isScriptHashOut; +Script.outputIdentifiers.DATA_OUT = Script.prototype.isDataOut; -},{"./aes":23,"./ghash":28,"./incr32":29,"buffer-xor":51,"cipher-base":53,"inherits":104,"safe-buffer":148}],25:[function(require,module,exports){ -var ciphers = require('./encrypter') -var deciphers = require('./decrypter') -var modes = require('./modes/list.json') +/** + * @returns {object} The Script type if it is a known form, + * or Script.UNKNOWN if it isn't + */ +Script.prototype.classifyOutput = function() { + for (var type in Script.outputIdentifiers) { + if (Script.outputIdentifiers[type].bind(this)()) { + return Script.types[type]; + } + } + return Script.types.UNKNOWN; +}; -function getCiphers () { - return Object.keys(modes) -} +Script.inputIdentifiers = {}; +Script.inputIdentifiers.PUBKEY_IN = Script.prototype.isPublicKeyIn; +Script.inputIdentifiers.PUBKEYHASH_IN = Script.prototype.isPublicKeyHashIn; +Script.inputIdentifiers.MULTISIG_IN = Script.prototype.isMultisigIn; +Script.inputIdentifiers.SCRIPTHASH_IN = Script.prototype.isScriptHashIn; -exports.createCipher = exports.Cipher = ciphers.createCipher -exports.createCipheriv = exports.Cipheriv = ciphers.createCipheriv -exports.createDecipher = exports.Decipher = deciphers.createDecipher -exports.createDecipheriv = exports.Decipheriv = deciphers.createDecipheriv -exports.listCiphers = exports.getCiphers = getCiphers +/** + * @returns {object} The Script type if it is a known form, + * or Script.UNKNOWN if it isn't + */ +Script.prototype.classifyInput = function() { + for (var type in Script.inputIdentifiers) { + if (Script.inputIdentifiers[type].bind(this)()) { + return Script.types[type]; + } + } + return Script.types.UNKNOWN; +}; -},{"./decrypter":26,"./encrypter":27,"./modes/list.json":37}],26:[function(require,module,exports){ -var AuthCipher = require('./authCipher') -var Buffer = require('safe-buffer').Buffer -var MODES = require('./modes') -var StreamCipher = require('./streamCipher') -var Transform = require('cipher-base') -var aes = require('./aes') -var ebtk = require('evp_bytestokey') -var inherits = require('inherits') -function Decipher (mode, key, iv) { - Transform.call(this) +/** + * @returns {boolean} if script is one of the known types + */ +Script.prototype.isStandard = function() { + // TODO: Add BIP62 compliance + return this.classify() !== Script.types.UNKNOWN; +}; - this._cache = new Splitter() - this._last = void 0 - this._cipher = new aes.AES(key) - this._prev = Buffer.from(iv) - this._mode = mode - this._autopadding = true -} -inherits(Decipher, Transform) +// Script construction methods -Decipher.prototype._update = function (data) { - this._cache.add(data) - var chunk - var thing - var out = [] - while ((chunk = this._cache.get(this._autopadding))) { - thing = this._mode.decrypt(this, chunk) - out.push(thing) - } - return Buffer.concat(out) -} +/** + * Adds a script element at the start of the script. + * @param {*} obj a string, number, Opcode, Buffer, or object to add + * @returns {Script} this script instance + */ +Script.prototype.prepend = function(obj) { + this._addByType(obj, true); + return this; +}; -Decipher.prototype._final = function () { - var chunk = this._cache.flush() - if (this._autopadding) { - return unpad(this._mode.decrypt(this, chunk)) - } else if (chunk) { - throw new Error('data not multiple of block length') +/** + * Compares a script with another script + */ +Script.prototype.equals = function(script) { + $.checkState(script instanceof Script, 'Must provide another script'); + if (this.chunks.length !== script.chunks.length) { + return false; } -} - -Decipher.prototype.setAutoPadding = function (setTo) { - this._autopadding = !!setTo - return this -} - -function Splitter () { - this.cache = Buffer.allocUnsafe(0) -} - -Splitter.prototype.add = function (data) { - this.cache = Buffer.concat([this.cache, data]) -} - -Splitter.prototype.get = function (autoPadding) { - var out - if (autoPadding) { - if (this.cache.length > 16) { - out = this.cache.slice(0, 16) - this.cache = this.cache.slice(16) - return out + var i; + for (i = 0; i < this.chunks.length; i++) { + if (BufferUtil.isBuffer(this.chunks[i].buf) && !BufferUtil.isBuffer(script.chunks[i].buf)) { + return false; } - } else { - if (this.cache.length >= 16) { - out = this.cache.slice(0, 16) - this.cache = this.cache.slice(16) - return out + if (BufferUtil.isBuffer(this.chunks[i].buf) && !BufferUtil.equals(this.chunks[i].buf, script.chunks[i].buf)) { + return false; + } else if (this.chunks[i].opcodenum !== script.chunks[i].opcodenum) { + return false; } } + return true; +}; - return null -} +/** + * Adds a script element to the end of the script. + * + * @param {*} obj a string, number, Opcode, Buffer, or object to add + * @returns {Script} this script instance + * + */ +Script.prototype.add = function(obj) { + this._addByType(obj, false); + return this; +}; -Splitter.prototype.flush = function () { - if (this.cache.length) return this.cache -} +Script.prototype._addByType = function(obj, prepend) { + if (typeof obj === 'string') { + this._addOpcode(obj, prepend); + } else if (typeof obj === 'number') { + this._addOpcode(obj, prepend); + } else if (obj instanceof Opcode) { + this._addOpcode(obj, prepend); + } else if (BufferUtil.isBuffer(obj)) { + this._addBuffer(obj, prepend); + } else if (obj instanceof Script) { + this.chunks = this.chunks.concat(obj.chunks); + } else if (typeof obj === 'object') { + this._insertAtPosition(obj, prepend); + } else { + throw new Error('Invalid script chunk'); + } +}; -function unpad (last) { - var padded = last[15] - if (padded < 1 || padded > 16) { - throw new Error('unable to decrypt data') +Script.prototype._insertAtPosition = function(op, prepend) { + if (prepend) { + this.chunks.unshift(op); + } else { + this.chunks.push(op); } - var i = -1 - while (++i < padded) { - if (last[(i + (16 - padded))] !== padded) { - throw new Error('unable to decrypt data') - } +}; + +Script.prototype._addOpcode = function(opcode, prepend) { + var op; + if (typeof opcode === 'number') { + op = opcode; + } else if (opcode instanceof Opcode) { + op = opcode.toNumber(); + } else { + op = Opcode(opcode).toNumber(); } - if (padded === 16) return + this._insertAtPosition({ + opcodenum: op + }, prepend); + return this; +}; - return last.slice(0, 16 - padded) -} +Script.prototype._addBuffer = function(buf, prepend) { + var opcodenum; + var len = buf.length; + if (len >= 0 && len < Opcode.OP_PUSHDATA1) { + opcodenum = len; + } else if (len < Math.pow(2, 8)) { + opcodenum = Opcode.OP_PUSHDATA1; + } else if (len < Math.pow(2, 16)) { + opcodenum = Opcode.OP_PUSHDATA2; + } else if (len < Math.pow(2, 32)) { + opcodenum = Opcode.OP_PUSHDATA4; + } else { + throw new Error('You can\'t push that much data'); + } + this._insertAtPosition({ + buf: buf, + len: len, + opcodenum: opcodenum + }, prepend); + return this; +}; -function createDecipheriv (suite, password, iv) { - var config = MODES[suite.toLowerCase()] - if (!config) throw new TypeError('invalid suite type') +Script.prototype.hasCodeseparators = function() { + for (var i = 0; i < this.chunks.length; i++) { + if (this.chunks[i].opcodenum === Opcode.OP_CODESEPARATOR) { + return true; + } + } + return false; +}; - if (typeof iv === 'string') iv = Buffer.from(iv) - if (config.mode !== 'GCM' && iv.length !== config.iv) throw new TypeError('invalid iv length ' + iv.length) +Script.prototype.removeCodeseparators = function() { + var chunks = []; + for (var i = 0; i < this.chunks.length; i++) { + if (this.chunks[i].opcodenum !== Opcode.OP_CODESEPARATOR) { + chunks.push(this.chunks[i]); + } + } + this.chunks = chunks; + return this; +}; - if (typeof password === 'string') password = Buffer.from(password) - if (password.length !== config.key / 8) throw new TypeError('invalid key length ' + password.length) +// high level script builder methods - if (config.type === 'stream') { - return new StreamCipher(config.module, password, iv, true) - } else if (config.type === 'auth') { - return new AuthCipher(config.module, password, iv, true) +/** + * @returns {Script} a new Multisig output script for given public keys, + * requiring m of those public keys to spend + * @param {PublicKey[]} publicKeys - list of all public keys controlling the output + * @param {number} threshold - amount of required signatures to spend the output + * @param {Object=} opts - Several options: + * - noSorting: defaults to false, if true, don't sort the given + * public keys before creating the script + */ +Script.buildMultisigOut = function(publicKeys, threshold, opts) { + $.checkArgument(threshold <= publicKeys.length, + 'Number of required signatures must be less than or equal to the number of public keys'); + opts = opts || {}; + var script = new Script(); + script.add(Opcode.smallInt(threshold)); + publicKeys = _.map(publicKeys, PublicKey); + var sorted = publicKeys; + if (!opts.noSorting) { + sorted = _.sortBy(publicKeys, function(publicKey) { + return publicKey.toString('hex'); + }); + } + for (var i = 0; i < sorted.length; i++) { + var publicKey = sorted[i]; + script.add(publicKey.toBuffer()); } + script.add(Opcode.smallInt(publicKeys.length)); + script.add(Opcode.OP_CHECKMULTISIG); + return script; +}; - return new Decipher(config.module, password, iv) -} +Script.buildWitnessMultisigOutFromScript = function(script) { + if (script instanceof Script) { + var s = new Script(); + s.add(Opcode.OP_0); + s.add(Hash.sha256(script.toBuffer())); + return s; + } else { + throw new TypeError('First argument is expected to be a p2sh script'); + } +}; -function createDecipher (suite, password) { - var config = MODES[suite.toLowerCase()] - if (!config) throw new TypeError('invalid suite type') +/** + * A new Multisig input script for the given public keys, requiring m of those public keys to spend + * + * @param {PublicKey[]} pubkeys list of all public keys controlling the output + * @param {number} threshold amount of required signatures to spend the output + * @param {Array} signatures and array of signature buffers to append to the script + * @param {Object=} opts + * @param {boolean=} opts.noSorting don't sort the given public keys before creating the script (false by default) + * @param {Script=} opts.cachedMultisig don't recalculate the redeemScript + * + * @returns {Script} + */ +Script.buildMultisigIn = function(pubkeys, threshold, signatures, opts) { + $.checkArgument(_.isArray(pubkeys)); + $.checkArgument(_.isNumber(threshold)); + $.checkArgument(_.isArray(signatures)); + opts = opts || {}; + var s = new Script(); + s.add(Opcode.OP_0); + _.each(signatures, function(signature) { + $.checkArgument(BufferUtil.isBuffer(signature), 'Signatures must be an array of Buffers'); + // TODO: allow signatures to be an array of Signature objects + s.add(signature); + }); + return s; +}; - var keys = ebtk(password, false, config.key, config.iv) - return createDecipheriv(suite, keys.key, keys.iv) -} +/** + * A new P2SH Multisig input script for the given public keys, requiring m of those public keys to spend + * + * @param {PublicKey[]} pubkeys list of all public keys controlling the output + * @param {number} threshold amount of required signatures to spend the output + * @param {Array} signatures and array of signature buffers to append to the script + * @param {Object=} opts + * @param {boolean=} opts.noSorting don't sort the given public keys before creating the script (false by default) + * @param {Script=} opts.cachedMultisig don't recalculate the redeemScript + * + * @returns {Script} + */ +Script.buildP2SHMultisigIn = function(pubkeys, threshold, signatures, opts) { + $.checkArgument(_.isArray(pubkeys)); + $.checkArgument(_.isNumber(threshold)); + $.checkArgument(_.isArray(signatures)); + opts = opts || {}; + var s = new Script(); + s.add(Opcode.OP_0); + _.each(signatures, function(signature) { + $.checkArgument(BufferUtil.isBuffer(signature), 'Signatures must be an array of Buffers'); + // TODO: allow signatures to be an array of Signature objects + s.add(signature); + }); + s.add((opts.cachedMultisig || Script.buildMultisigOut(pubkeys, threshold, opts)).toBuffer()); + return s; +}; -exports.createDecipher = createDecipher -exports.createDecipheriv = createDecipheriv +/** + * @returns {Script} a new pay to public key hash output for the given + * address or public key + * @param {(Address|PublicKey)} to - destination address or public key + */ +Script.buildPublicKeyHashOut = function(to) { + $.checkArgument(!_.isUndefined(to)); + $.checkArgument(to instanceof PublicKey || to instanceof Address || _.isString(to)); + if (to instanceof PublicKey) { + to = to.toAddress(); + } else if (_.isString(to)) { + to = new Address(to); + } + var s = new Script(); + s.add(Opcode.OP_DUP) + .add(Opcode.OP_HASH160) + .add(to.hashBuffer) + .add(Opcode.OP_EQUALVERIFY) + .add(Opcode.OP_CHECKSIG); + s._network = to.network; + return s; +}; -},{"./aes":23,"./authCipher":24,"./modes":36,"./streamCipher":39,"cipher-base":53,"evp_bytestokey":88,"inherits":104,"safe-buffer":148}],27:[function(require,module,exports){ -var MODES = require('./modes') -var AuthCipher = require('./authCipher') -var Buffer = require('safe-buffer').Buffer -var StreamCipher = require('./streamCipher') -var Transform = require('cipher-base') -var aes = require('./aes') -var ebtk = require('evp_bytestokey') -var inherits = require('inherits') +/** + * @returns {Script} a new pay to public key output for the given + * public key + */ +Script.buildPublicKeyOut = function(pubkey) { + $.checkArgument(pubkey instanceof PublicKey); + var s = new Script(); + s.add(pubkey.toBuffer()) + .add(Opcode.OP_CHECKSIG); + return s; +}; -function Cipher (mode, key, iv) { - Transform.call(this) +/** + * @returns {Script} a new OP_RETURN script with data + * @param {(string|Buffer)} data - the data to embed in the output + * @param {(string)} encoding - the type of encoding of the string + */ +Script.buildDataOut = function(data, encoding) { + $.checkArgument(_.isUndefined(data) || _.isString(data) || BufferUtil.isBuffer(data)); + if (_.isString(data)) { + data = Buffer.from(data, encoding); + } + var s = new Script(); + s.add(Opcode.OP_RETURN); + if (!_.isUndefined(data)) { + s.add(data); + } + return s; +}; - this._cache = new Splitter() - this._cipher = new aes.AES(key) - this._prev = Buffer.from(iv) - this._mode = mode - this._autopadding = true -} +/** + * @param {Script|Address} script - the redeemScript for the new p2sh output. + * It can also be a p2sh address + * @returns {Script} new pay to script hash script for given script + */ +Script.buildScriptHashOut = function(script) { + $.checkArgument(script instanceof Script || + (script instanceof Address && script.isPayToScriptHash())); + var s = new Script(); + s.add(Opcode.OP_HASH160) + .add(script instanceof Address ? script.hashBuffer : Hash.sha256ripemd160(script.toBuffer())) + .add(Opcode.OP_EQUAL); -inherits(Cipher, Transform) + s._network = script._network || script.network; + return s; +}; -Cipher.prototype._update = function (data) { - this._cache.add(data) - var chunk - var thing - var out = [] +/** + * Builds a scriptSig (a script for an input) that signs a public key output script. + * + * @param {Signature|Buffer} signature - a Signature object, or the signature in DER canonical encoding + * @param {number=} sigtype - the type of the signature (defaults to SIGHASH_ALL) + */ +Script.buildPublicKeyIn = function(signature, sigtype) { + $.checkArgument(signature instanceof Signature || BufferUtil.isBuffer(signature)); + $.checkArgument(_.isUndefined(sigtype) || _.isNumber(sigtype)); + if (signature instanceof Signature) { + signature = signature.toBuffer(); + } + var script = new Script(); + script.add(BufferUtil.concat([ + signature, + BufferUtil.integerAsSingleByteBuffer(sigtype || Signature.SIGHASH_ALL) + ])); + return script; +}; - while ((chunk = this._cache.get())) { - thing = this._mode.encrypt(this, chunk) - out.push(thing) +/** + * Builds a scriptSig (a script for an input) that signs a public key hash + * output script. + * + * @param {Buffer|string|PublicKey} publicKey + * @param {Signature|Buffer} signature - a Signature object, or the signature in DER canonical encoding + * @param {number=} sigtype - the type of the signature (defaults to SIGHASH_ALL) + */ +Script.buildPublicKeyHashIn = function(publicKey, signature, sigtype) { + $.checkArgument(signature instanceof Signature || BufferUtil.isBuffer(signature)); + $.checkArgument(_.isUndefined(sigtype) || _.isNumber(sigtype)); + if (signature instanceof Signature) { + signature = signature.toBuffer(); } + var script = new Script() + .add(BufferUtil.concat([ + signature, + BufferUtil.integerAsSingleByteBuffer(sigtype || Signature.SIGHASH_ALL) + ])) + .add(new PublicKey(publicKey).toBuffer()); + return script; +}; - return Buffer.concat(out) -} +/** + * @returns {Script} an empty script + */ +Script.empty = function() { + return new Script(); +}; -var PADDING = Buffer.alloc(16, 0x10) +/** + * @returns {Script} a new pay to script hash script that pays to this script + */ +Script.prototype.toScriptHashOut = function() { + return Script.buildScriptHashOut(this); +}; -Cipher.prototype._final = function () { - var chunk = this._cache.flush() - if (this._autopadding) { - chunk = this._mode.encrypt(this, chunk) - this._cipher.scrub() - return chunk +/** + * @return {Script} an output script built from the address + */ +Script.fromAddress = function(address) { + address = Address(address); + if (address.isPayToScriptHash()) { + return Script.buildScriptHashOut(address); + } else if (address.isPayToPublicKeyHash()) { + return Script.buildPublicKeyHashOut(address); } + throw new errors.Script.UnrecognizedAddress(address); +}; - if (!chunk.equals(PADDING)) { - this._cipher.scrub() - throw new Error('data not multiple of block length') +/** + * Will return the associated address information object + * @return {Address|boolean} + */ +Script.prototype.getAddressInfo = function(opts) { + if (this._isInput) { + return this._getInputAddressInfo(); + } else if (this._isOutput) { + return this._getOutputAddressInfo(); + } else { + var info = this._getOutputAddressInfo(); + if (!info) { + return this._getInputAddressInfo(); + } + return info; } -} - -Cipher.prototype.setAutoPadding = function (setTo) { - this._autopadding = !!setTo - return this -} - -function Splitter () { - this.cache = Buffer.allocUnsafe(0) -} - -Splitter.prototype.add = function (data) { - this.cache = Buffer.concat([this.cache, data]) -} +}; -Splitter.prototype.get = function () { - if (this.cache.length > 15) { - var out = this.cache.slice(0, 16) - this.cache = this.cache.slice(16) - return out +/** + * Will return the associated output scriptPubKey address information object + * @return {Address|boolean} + * @private + */ +Script.prototype._getOutputAddressInfo = function() { + var info = {}; + if (this.isScriptHashOut()) { + info.hashBuffer = this.getData(); + info.type = Address.PayToScriptHash; + } else if (this.isPublicKeyHashOut()) { + info.hashBuffer = this.getData(); + info.type = Address.PayToPublicKeyHash; + } else { + return false; } - return null -} + return info; +}; -Splitter.prototype.flush = function () { - var len = 16 - this.cache.length - var padBuff = Buffer.allocUnsafe(len) +/** + * Will return the associated input scriptSig address information object + * @return {Address|boolean} + * @private + */ +Script.prototype._getInputAddressInfo = function() { + var info = {}; + if (this.isPublicKeyHashIn()) { + // hash the publickey found in the scriptSig + info.hashBuffer = Hash.sha256ripemd160(this.chunks[1].buf); + info.type = Address.PayToPublicKeyHash; + } else if (this.isScriptHashIn()) { + // hash the redeemscript found at the end of the scriptSig + info.hashBuffer = Hash.sha256ripemd160(this.chunks[this.chunks.length - 1].buf); + info.type = Address.PayToScriptHash; + } else { + return false; + } + return info; +}; - var i = -1 - while (++i < len) { - padBuff.writeUInt8(len, i) +/** + * @param {Network=} network + * @return {Address|boolean} the associated address for this script if possible, or false + */ +Script.prototype.toAddress = function(network) { + var info = this.getAddressInfo(); + if (!info) { + return false; } + info.network = Networks.get(network) || this._network || Networks.defaultNetwork; + return new Address(info); +}; - return Buffer.concat([this.cache, padBuff]) -} - -function createCipheriv (suite, password, iv) { - var config = MODES[suite.toLowerCase()] - if (!config) throw new TypeError('invalid suite type') - - if (typeof password === 'string') password = Buffer.from(password) - if (password.length !== config.key / 8) throw new TypeError('invalid key length ' + password.length) +/** + * Analogous to bitcoind's FindAndDelete. Find and delete equivalent chunks, + * typically used with push data chunks. Note that this will find and delete + * not just the same data, but the same data with the same push data op as + * produced by default. i.e., if a pushdata in a tx does not use the minimal + * pushdata op, then when you try to remove the data it is pushing, it will not + * be removed, because they do not use the same pushdata op. + */ +Script.prototype.findAndDelete = function(script) { + var buf = script.toBuffer(); + var hex = buf.toString('hex'); + for (var i = 0; i < this.chunks.length; i++) { + var script2 = Script({ + chunks: [this.chunks[i]] + }); + var buf2 = script2.toBuffer(); + var hex2 = buf2.toString('hex'); + if (hex === hex2) { + this.chunks.splice(i, 1); + } + } + return this; +}; - if (typeof iv === 'string') iv = Buffer.from(iv) - if (config.mode !== 'GCM' && iv.length !== config.iv) throw new TypeError('invalid iv length ' + iv.length) +/** + * Comes from bitcoind's script interpreter CheckMinimalPush function + * @returns {boolean} if the chunk {i} is the smallest way to push that particular data. + */ +Script.prototype.checkMinimalPush = function(i) { + var chunk = this.chunks[i]; + var buf = chunk.buf; + var opcodenum = chunk.opcodenum; + if (!buf) { + return true; + } + if (buf.length === 0) { + // Could have used OP_0. + return opcodenum === Opcode.OP_0; + } else if (buf.length === 1 && buf[0] >= 1 && buf[0] <= 16) { + // Could have used OP_1 .. OP_16. + return opcodenum === Opcode.OP_1 + (buf[0] - 1); + } else if (buf.length === 1 && buf[0] === 0x81) { + // Could have used OP_1NEGATE + return opcodenum === Opcode.OP_1NEGATE; + } else if (buf.length <= 75) { + // Could have used a direct push (opcode indicating number of bytes pushed + those bytes). + return opcodenum === buf.length; + } else if (buf.length <= 255) { + // Could have used OP_PUSHDATA. + return opcodenum === Opcode.OP_PUSHDATA1; + } else if (buf.length <= 65535) { + // Could have used OP_PUSHDATA2. + return opcodenum === Opcode.OP_PUSHDATA2; + } + return true; +}; - if (config.type === 'stream') { - return new StreamCipher(config.module, password, iv) - } else if (config.type === 'auth') { - return new AuthCipher(config.module, password, iv) +/** + * Comes from bitcoind's script DecodeOP_N function + * @param {number} opcode + * @returns {number} numeric value in range of 0 to 16 + */ +Script.prototype._decodeOP_N = function(opcode) { + if (opcode === Opcode.OP_0) { + return 0; + } else if (opcode >= Opcode.OP_1 && opcode <= Opcode.OP_16) { + return opcode - (Opcode.OP_1 - 1); + } else { + throw new Error('Invalid opcode: ' + JSON.stringify(opcode)); } +}; - return new Cipher(config.module, password, iv) -} +/** + * Comes from bitcoind's script GetSigOpCount(boolean) function + * @param {boolean} use current (true) or pre-version-0.6 (false) logic + * @returns {number} number of signature operations required by this script + */ +Script.prototype.getSignatureOperationsCount = function(accurate) { + accurate = (_.isUndefined(accurate) ? true : accurate); + var self = this; + var n = 0; + var lastOpcode = Opcode.OP_INVALIDOPCODE; + _.each(self.chunks, function getChunk(chunk) { + var opcode = chunk.opcodenum; + if (opcode == Opcode.OP_CHECKSIG || opcode == Opcode.OP_CHECKSIGVERIFY) { + n++; + } else if (opcode == Opcode.OP_CHECKMULTISIG || opcode == Opcode.OP_CHECKMULTISIGVERIFY) { + if (accurate && lastOpcode >= Opcode.OP_1 && lastOpcode <= Opcode.OP_16) { + n += self._decodeOP_N(lastOpcode); + } else { + n += 20; + } + } + lastOpcode = opcode; + }); + return n; +}; -function createCipher (suite, password) { - var config = MODES[suite.toLowerCase()] - if (!config) throw new TypeError('invalid suite type') +module.exports = Script; - var keys = ebtk(password, false, config.key, config.iv) - return createCipheriv(suite, keys.key, keys.iv) -} +}).call(this,require("buffer").Buffer) +},{"../address":1,"../crypto/hash":8,"../crypto/signature":11,"../encoding/bufferreader":14,"../encoding/bufferwriter":15,"../errors":17,"../networks":22,"../opcode":23,"../publickey":25,"../util/buffer":44,"../util/js":45,"../util/preconditions":46,"buffer":100,"lodash":156}],29:[function(require,module,exports){ +module.exports = require('./transaction'); -exports.createCipheriv = createCipheriv -exports.createCipher = createCipher +module.exports.Input = require('./input'); +module.exports.Output = require('./output'); +module.exports.UnspentOutput = require('./unspentoutput'); +module.exports.Signature = require('./signature'); +module.exports.Sighash = require('./sighash'); +module.exports.SighashWitness = require('./sighashwitness'); -},{"./aes":23,"./authCipher":24,"./modes":36,"./streamCipher":39,"cipher-base":53,"evp_bytestokey":88,"inherits":104,"safe-buffer":148}],28:[function(require,module,exports){ -var Buffer = require('safe-buffer').Buffer -var ZEROES = Buffer.alloc(16, 0) +},{"./input":30,"./output":36,"./sighash":37,"./sighashwitness":38,"./signature":39,"./transaction":40,"./unspentoutput":41}],30:[function(require,module,exports){ +module.exports = require('./input'); -function toArray (buf) { - return [ - buf.readUInt32BE(0), - buf.readUInt32BE(4), - buf.readUInt32BE(8), - buf.readUInt32BE(12) - ] -} +module.exports.PublicKey = require('./publickey'); +module.exports.PublicKeyHash = require('./publickeyhash'); +module.exports.MultiSig = require('./multisig.js'); +module.exports.MultiSigScriptHash = require('./multisigscripthash.js'); -function fromArray (out) { - var buf = Buffer.allocUnsafe(16) - buf.writeUInt32BE(out[0] >>> 0, 0) - buf.writeUInt32BE(out[1] >>> 0, 4) - buf.writeUInt32BE(out[2] >>> 0, 8) - buf.writeUInt32BE(out[3] >>> 0, 12) - return buf -} +},{"./input":31,"./multisig.js":32,"./multisigscripthash.js":33,"./publickey":34,"./publickeyhash":35}],31:[function(require,module,exports){ +'use strict'; -function GHASH (key) { - this.h = key - this.state = Buffer.alloc(16, 0) - this.cache = Buffer.allocUnsafe(0) -} +var _ = require('lodash'); +var $ = require('../../util/preconditions'); +var errors = require('../../errors'); +var BufferWriter = require('../../encoding/bufferwriter'); +var buffer = require('buffer'); +var BufferUtil = require('../../util/buffer'); +var JSUtil = require('../../util/js'); +var Script = require('../../script'); +var Sighash = require('../sighash'); +var Output = require('../output'); -// from http://bitwiseshiftleft.github.io/sjcl/doc/symbols/src/core_gcm.js.html -// by Juho Vähä-Herttua -GHASH.prototype.ghash = function (block) { - var i = -1 - while (++i < block.length) { - this.state[i] ^= block[i] +var MAXINT = 0xffffffff; // Math.pow(2, 32) - 1; +var DEFAULT_RBF_SEQNUMBER = MAXINT - 2; +var DEFAULT_SEQNUMBER = MAXINT; +var DEFAULT_LOCKTIME_SEQNUMBER = MAXINT - 1; + +function Input(params) { + if (!(this instanceof Input)) { + return new Input(params); + } + if (params) { + return this._fromObject(params); } - this._multiply() } -GHASH.prototype._multiply = function () { - var Vi = toArray(this.h) - var Zi = [0, 0, 0, 0] - var j, xi, lsbVi - var i = -1 - while (++i < 128) { - xi = (this.state[~~(i / 8)] & (1 << (7 - (i % 8)))) !== 0 - if (xi) { - // Z_i+1 = Z_i ^ V_i - Zi[0] ^= Vi[0] - Zi[1] ^= Vi[1] - Zi[2] ^= Vi[2] - Zi[3] ^= Vi[3] - } - - // Store the value of LSB(V_i) - lsbVi = (Vi[3] & 1) !== 0 +Input.MAXINT = MAXINT; +Input.DEFAULT_SEQNUMBER = DEFAULT_SEQNUMBER; +Input.DEFAULT_LOCKTIME_SEQNUMBER = DEFAULT_LOCKTIME_SEQNUMBER; +Input.DEFAULT_RBF_SEQNUMBER = DEFAULT_RBF_SEQNUMBER; - // V_i+1 = V_i >> 1 - for (j = 3; j > 0; j--) { - Vi[j] = (Vi[j] >>> 1) | ((Vi[j - 1] & 1) << 31) +Object.defineProperty(Input.prototype, 'script', { + configurable: false, + enumerable: true, + get: function() { + if (this.isNull()) { + return null; } - Vi[0] = Vi[0] >>> 1 - - // If LSB(V_i) is 1, V_i+1 = (V_i >> 1) ^ R - if (lsbVi) { - Vi[0] = Vi[0] ^ (0xe1 << 24) + if (!this._script) { + this._script = new Script(this._scriptBuffer); + this._script._isInput = true; } + return this._script; } - this.state = fromArray(Zi) -} +}); -GHASH.prototype.update = function (buf) { - this.cache = Buffer.concat([this.cache, buf]) - var chunk - while (this.cache.length >= 16) { - chunk = this.cache.slice(0, 16) - this.cache = this.cache.slice(16) - this.ghash(chunk) - } -} +Input.fromObject = function(obj) { + $.checkArgument(_.isObject(obj)); + var input = new Input(); + return input._fromObject(obj); +}; -GHASH.prototype.final = function (abl, bl) { - if (this.cache.length) { - this.ghash(Buffer.concat([this.cache, ZEROES], 16)) +Input.prototype._fromObject = function(params) { + var prevTxId; + if (_.isString(params.prevTxId) && JSUtil.isHexa(params.prevTxId)) { + prevTxId = new buffer.Buffer(params.prevTxId, 'hex'); + } else { + prevTxId = params.prevTxId; } - - this.ghash(fromArray([0, abl, 0, bl])) - return this.state -} - -module.exports = GHASH - -},{"safe-buffer":148}],29:[function(require,module,exports){ -function incr32 (iv) { - var len = iv.length - var item - while (len--) { - item = iv.readUInt8(len) - if (item === 255) { - iv.writeUInt8(0, len) - } else { - item++ - iv.writeUInt8(item, len) - break - } + this.witnesses = []; + this.output = params.output ? + (params.output instanceof Output ? params.output : new Output(params.output)) : undefined; + this.prevTxId = prevTxId || params.txidbuf; + this.outputIndex = _.isUndefined(params.outputIndex) ? params.txoutnum : params.outputIndex; + this.sequenceNumber = _.isUndefined(params.sequenceNumber) ? + (_.isUndefined(params.seqnum) ? DEFAULT_SEQNUMBER : params.seqnum) : params.sequenceNumber; + if (_.isUndefined(params.script) && _.isUndefined(params.scriptBuffer)) { + throw new errors.Transaction.Input.MissingScript(); } -} -module.exports = incr32 - -},{}],30:[function(require,module,exports){ -var xor = require('buffer-xor') - -exports.encrypt = function (self, block) { - var data = xor(block, self._prev) - - self._prev = self._cipher.encryptBlock(data) - return self._prev -} - -exports.decrypt = function (self, block) { - var pad = self._prev - - self._prev = block - var out = self._cipher.decryptBlock(block) - - return xor(out, pad) -} - -},{"buffer-xor":51}],31:[function(require,module,exports){ -var Buffer = require('safe-buffer').Buffer -var xor = require('buffer-xor') + this.setScript(params.scriptBuffer || params.script); + return this; +}; -function encryptStart (self, data, decrypt) { - var len = data.length - var out = xor(data, self._cache) - self._cache = self._cache.slice(len) - self._prev = Buffer.concat([self._prev, decrypt ? data : out]) - return out -} +Input.prototype.toObject = Input.prototype.toJSON = function toObject() { + var obj = { + prevTxId: this.prevTxId.toString('hex'), + outputIndex: this.outputIndex, + sequenceNumber: this.sequenceNumber, + script: this._scriptBuffer.toString('hex'), + }; + // add human readable form if input contains valid script + if (this.script) { + obj.scriptString = this.script.toString(); + } + if (this.output) { + obj.output = this.output.toObject(); + } + return obj; +}; -exports.encrypt = function (self, data, decrypt) { - var out = Buffer.allocUnsafe(0) - var len +Input.fromBufferReader = function(br) { + var input = new Input(); + input.prevTxId = br.readReverse(32); + input.outputIndex = br.readUInt32LE(); + input._scriptBuffer = br.readVarLengthBuffer(); + input.sequenceNumber = br.readUInt32LE(); + // TODO: return different classes according to which input it is + // e.g: CoinbaseInput, PublicKeyHashInput, MultiSigScriptHashInput, etc. + return input; +}; - while (data.length) { - if (self._cache.length === 0) { - self._cache = self._cipher.encryptBlock(self._prev) - self._prev = Buffer.allocUnsafe(0) - } +Input.prototype.toBufferWriter = function(writer) { + if (!writer) { + writer = new BufferWriter(); + } + writer.writeReverse(this.prevTxId); + writer.writeUInt32LE(this.outputIndex); + var script = this._scriptBuffer; + writer.writeVarintNum(script.length); + writer.write(script); + writer.writeUInt32LE(this.sequenceNumber); + return writer; +}; - if (self._cache.length <= data.length) { - len = self._cache.length - out = Buffer.concat([out, encryptStart(self, data.slice(0, len), decrypt)]) - data = data.slice(len) - } else { - out = Buffer.concat([out, encryptStart(self, data, decrypt)]) - break - } +Input.prototype.setScript = function(script) { + this._script = null; + if (script instanceof Script) { + this._script = script; + this._script._isInput = true; + this._scriptBuffer = script.toBuffer(); + } else if (JSUtil.isHexa(script)) { + // hex string script + this._scriptBuffer = new buffer.Buffer(script, 'hex'); + } else if (_.isString(script)) { + // human readable string script + this._script = new Script(script); + this._script._isInput = true; + this._scriptBuffer = this._script.toBuffer(); + } else if (BufferUtil.isBuffer(script)) { + // buffer script + this._scriptBuffer = new buffer.Buffer(script); + } else { + throw new TypeError('Invalid argument type: script'); } + return this; +}; - return out -} +/** + * Retrieve signatures for the provided PrivateKey. + * + * @param {Transaction} transaction - the transaction to be signed + * @param {PrivateKey} privateKey - the private key to use when signing + * @param {number} inputIndex - the index of this input in the provided transaction + * @param {number} sigType - defaults to Signature.SIGHASH_ALL + * @param {Buffer} addressHash - if provided, don't calculate the hash of the + * public key associated with the private key provided + * @abstract + */ +Input.prototype.getSignatures = function() { + throw new errors.AbstractMethodInvoked( + 'Trying to sign unsupported output type (only P2PKH and P2SH multisig inputs are supported)' + + ' for input: ' + JSON.stringify(this) + ); +}; -},{"buffer-xor":51,"safe-buffer":148}],32:[function(require,module,exports){ -var Buffer = require('safe-buffer').Buffer +Input.prototype.getSatoshisBuffer = function() { + $.checkState(this.output instanceof Output); + $.checkState(this.output._satoshisBN); + return new BufferWriter().writeUInt64LEBN(this.output._satoshisBN).toBuffer(); +}; -function encryptByte (self, byteParam, decrypt) { - var pad - var i = -1 - var len = 8 - var out = 0 - var bit, value - while (++i < len) { - pad = self._cipher.encryptBlock(self._prev) - bit = (byteParam & (1 << (7 - i))) ? 0x80 : 0 - value = pad[0] ^ bit - out += ((value & 0x80) >> (i % 8)) - self._prev = shiftIn(self._prev, decrypt ? bit : value) - } - return out -} -function shiftIn (buffer, value) { - var len = buffer.length - var i = -1 - var out = Buffer.allocUnsafe(buffer.length) - buffer = Buffer.concat([buffer, Buffer.from([value])]) +Input.prototype.isFullySigned = function() { + throw new errors.AbstractMethodInvoked('Input#isFullySigned'); +}; - while (++i < len) { - out[i] = buffer[i] << 1 | buffer[i + 1] >> (7) - } +Input.prototype.isFinal = function() { + return this.sequenceNumber !== 4294967295; +}; - return out -} +Input.prototype.addSignature = function() { + throw new errors.AbstractMethodInvoked('Input#addSignature'); +}; -exports.encrypt = function (self, chunk, decrypt) { - var len = chunk.length - var out = Buffer.allocUnsafe(len) - var i = -1 +Input.prototype.clearSignatures = function() { + throw new errors.AbstractMethodInvoked('Input#clearSignatures'); +}; - while (++i < len) { - out[i] = encryptByte(self, chunk[i], decrypt) +Input.prototype.hasWitnesses = function() { + if (this.witnesses && this.witnesses.length > 0) { + return true; } + return false; +}; - return out -} +Input.prototype.getWitnesses = function() { + return this.witnesses; +}; -},{"safe-buffer":148}],33:[function(require,module,exports){ -var Buffer = require('safe-buffer').Buffer +Input.prototype.setWitnesses = function(witnesses) { + this.witnesses = witnesses; +}; -function encryptByte (self, byteParam, decrypt) { - var pad = self._cipher.encryptBlock(self._prev) - var out = pad[0] ^ byteParam +Input.prototype.isValidSignature = function(transaction, signature) { + // FIXME: Refactor signature so this is not necessary + signature.signature.nhashtype = signature.sigtype; + return Sighash.verify( + transaction, + signature.signature, + signature.publicKey, + signature.inputIndex, + this.output.script + ); +}; - self._prev = Buffer.concat([ - self._prev.slice(1), - Buffer.from([decrypt ? byteParam : out]) - ]) +/** + * @returns true if this is a coinbase input (represents no input) + */ +Input.prototype.isNull = function() { + return this.prevTxId.toString('hex') === '0000000000000000000000000000000000000000000000000000000000000000' && + this.outputIndex === 0xffffffff; +}; - return out -} +Input.prototype._estimateSize = function() { + return this.toBufferWriter().toBuffer().length; +}; -exports.encrypt = function (self, chunk, decrypt) { - var len = chunk.length - var out = Buffer.allocUnsafe(len) - var i = -1 +module.exports = Input; - while (++i < len) { - out[i] = encryptByte(self, chunk[i], decrypt) - } +},{"../../encoding/bufferwriter":15,"../../errors":17,"../../script":26,"../../util/buffer":44,"../../util/js":45,"../../util/preconditions":46,"../output":36,"../sighash":37,"buffer":100,"lodash":156}],32:[function(require,module,exports){ +'use strict'; - return out -} +var _ = require('lodash'); +var inherits = require('inherits'); +var Transaction = require('../transaction'); +var Input = require('./input'); +var Output = require('../output'); +var $ = require('../../util/preconditions'); -},{"safe-buffer":148}],34:[function(require,module,exports){ -var xor = require('buffer-xor') -var Buffer = require('safe-buffer').Buffer -var incr32 = require('../incr32') - -function getBlock (self) { - var out = self._cipher.encryptBlockRaw(self._prev) - incr32(self._prev) - return out -} +var Script = require('../../script'); +var Signature = require('../../crypto/signature'); +var Sighash = require('../sighash'); +var PublicKey = require('../../publickey'); +var BufferUtil = require('../../util/buffer'); +var TransactionSignature = require('../signature'); -var blockSize = 16 -exports.encrypt = function (self, chunk) { - var chunkNum = Math.ceil(chunk.length / blockSize) - var start = self._cache.length - self._cache = Buffer.concat([ - self._cache, - Buffer.allocUnsafe(chunkNum * blockSize) - ]) - for (var i = 0; i < chunkNum; i++) { - var out = getBlock(self) - var offset = start + i * blockSize - self._cache.writeUInt32BE(out[0], offset + 0) - self._cache.writeUInt32BE(out[1], offset + 4) - self._cache.writeUInt32BE(out[2], offset + 8) - self._cache.writeUInt32BE(out[3], offset + 12) +/** + * @constructor + */ +function MultiSigInput(input, pubkeys, threshold, signatures, opts) { + opts = opts || {}; + Input.apply(this, arguments); + var self = this; + pubkeys = pubkeys || input.publicKeys; + threshold = threshold || input.threshold; + signatures = signatures || input.signatures; + if (opts.noSorting) { + this.publicKeys = pubkeys + } else { + this.publicKeys = _.sortBy(pubkeys, function(publicKey) { return publicKey.toString('hex'); }); } - var pad = self._cache.slice(0, chunk.length) - self._cache = self._cache.slice(chunk.length) - return xor(chunk, pad) -} - -},{"../incr32":29,"buffer-xor":51,"safe-buffer":148}],35:[function(require,module,exports){ -exports.encrypt = function (self, block) { - return self._cipher.encryptBlock(block) -} - -exports.decrypt = function (self, block) { - return self._cipher.decryptBlock(block) + $.checkState(Script.buildMultisigOut(this.publicKeys, threshold).equals(this.output.script), + 'Provided public keys don\'t match to the provided output script'); + this.publicKeyIndex = {}; + _.each(this.publicKeys, function(publicKey, index) { + self.publicKeyIndex[publicKey.toString()] = index; + }); + this.threshold = threshold; + // Empty array of signatures + this.signatures = signatures ? this._deserializeSignatures(signatures) : new Array(this.publicKeys.length); } +inherits(MultiSigInput, Input); -},{}],36:[function(require,module,exports){ -var modeModules = { - ECB: require('./ecb'), - CBC: require('./cbc'), - CFB: require('./cfb'), - CFB8: require('./cfb8'), - CFB1: require('./cfb1'), - OFB: require('./ofb'), - CTR: require('./ctr'), - GCM: require('./ctr') -} +MultiSigInput.prototype.toObject = function() { + var obj = Input.prototype.toObject.apply(this, arguments); + obj.threshold = this.threshold; + obj.publicKeys = _.map(this.publicKeys, function(publicKey) { return publicKey.toString(); }); + obj.signatures = this._serializeSignatures(); + return obj; +}; -var modes = require('./list.json') +MultiSigInput.prototype._deserializeSignatures = function(signatures) { + return _.map(signatures, function(signature) { + if (!signature) { + return undefined; + } + return new TransactionSignature(signature); + }); +}; -for (var key in modes) { - modes[key].module = modeModules[modes[key].mode] -} +MultiSigInput.prototype._serializeSignatures = function() { + return _.map(this.signatures, function(signature) { + if (!signature) { + return undefined; + } + return signature.toObject(); + }); +}; -module.exports = modes +MultiSigInput.prototype.getSignatures = function(transaction, privateKey, index, sigtype) { + $.checkState(this.output instanceof Output); + sigtype = sigtype || Signature.SIGHASH_ALL; -},{"./cbc":30,"./cfb":31,"./cfb1":32,"./cfb8":33,"./ctr":34,"./ecb":35,"./list.json":37,"./ofb":38}],37:[function(require,module,exports){ -module.exports={ - "aes-128-ecb": { - "cipher": "AES", - "key": 128, - "iv": 0, - "mode": "ECB", - "type": "block" - }, - "aes-192-ecb": { - "cipher": "AES", - "key": 192, - "iv": 0, - "mode": "ECB", - "type": "block" - }, - "aes-256-ecb": { - "cipher": "AES", - "key": 256, - "iv": 0, - "mode": "ECB", - "type": "block" - }, - "aes-128-cbc": { - "cipher": "AES", - "key": 128, - "iv": 16, - "mode": "CBC", - "type": "block" - }, - "aes-192-cbc": { - "cipher": "AES", - "key": 192, - "iv": 16, - "mode": "CBC", - "type": "block" - }, - "aes-256-cbc": { - "cipher": "AES", - "key": 256, - "iv": 16, - "mode": "CBC", - "type": "block" - }, - "aes128": { - "cipher": "AES", - "key": 128, - "iv": 16, - "mode": "CBC", - "type": "block" - }, - "aes192": { - "cipher": "AES", - "key": 192, - "iv": 16, - "mode": "CBC", - "type": "block" - }, - "aes256": { - "cipher": "AES", - "key": 256, - "iv": 16, - "mode": "CBC", - "type": "block" - }, - "aes-128-cfb": { - "cipher": "AES", - "key": 128, - "iv": 16, - "mode": "CFB", - "type": "stream" - }, - "aes-192-cfb": { - "cipher": "AES", - "key": 192, - "iv": 16, - "mode": "CFB", - "type": "stream" - }, - "aes-256-cfb": { - "cipher": "AES", - "key": 256, - "iv": 16, - "mode": "CFB", - "type": "stream" - }, - "aes-128-cfb8": { - "cipher": "AES", - "key": 128, - "iv": 16, - "mode": "CFB8", - "type": "stream" - }, - "aes-192-cfb8": { - "cipher": "AES", - "key": 192, - "iv": 16, - "mode": "CFB8", - "type": "stream" - }, - "aes-256-cfb8": { - "cipher": "AES", - "key": 256, - "iv": 16, - "mode": "CFB8", - "type": "stream" - }, - "aes-128-cfb1": { - "cipher": "AES", - "key": 128, - "iv": 16, - "mode": "CFB1", - "type": "stream" - }, - "aes-192-cfb1": { - "cipher": "AES", - "key": 192, - "iv": 16, - "mode": "CFB1", - "type": "stream" - }, - "aes-256-cfb1": { - "cipher": "AES", - "key": 256, - "iv": 16, - "mode": "CFB1", - "type": "stream" - }, - "aes-128-ofb": { - "cipher": "AES", - "key": 128, - "iv": 16, - "mode": "OFB", - "type": "stream" - }, - "aes-192-ofb": { - "cipher": "AES", - "key": 192, - "iv": 16, - "mode": "OFB", - "type": "stream" - }, - "aes-256-ofb": { - "cipher": "AES", - "key": 256, - "iv": 16, - "mode": "OFB", - "type": "stream" - }, - "aes-128-ctr": { - "cipher": "AES", - "key": 128, - "iv": 16, - "mode": "CTR", - "type": "stream" - }, - "aes-192-ctr": { - "cipher": "AES", - "key": 192, - "iv": 16, - "mode": "CTR", - "type": "stream" - }, - "aes-256-ctr": { - "cipher": "AES", - "key": 256, - "iv": 16, - "mode": "CTR", - "type": "stream" - }, - "aes-128-gcm": { - "cipher": "AES", - "key": 128, - "iv": 12, - "mode": "GCM", - "type": "auth" - }, - "aes-192-gcm": { - "cipher": "AES", - "key": 192, - "iv": 12, - "mode": "GCM", - "type": "auth" - }, - "aes-256-gcm": { - "cipher": "AES", - "key": 256, - "iv": 12, - "mode": "GCM", - "type": "auth" - } -} + var self = this; + var results = []; + _.each(this.publicKeys, function(publicKey) { + if (publicKey.toString() === privateKey.publicKey.toString()) { + results.push(new TransactionSignature({ + publicKey: privateKey.publicKey, + prevTxId: self.prevTxId, + outputIndex: self.outputIndex, + inputIndex: index, + signature: Sighash.sign(transaction, privateKey, sigtype, index, self.output.script), + sigtype: sigtype + })); + } + }); -},{}],38:[function(require,module,exports){ -(function (Buffer){ -var xor = require('buffer-xor') + return results; +}; -function getBlock (self) { - self._prev = self._cipher.encryptBlock(self._prev) - return self._prev -} +MultiSigInput.prototype.addSignature = function(transaction, signature) { + $.checkState(!this.isFullySigned(), 'All needed signatures have already been added'); + $.checkArgument(!_.isUndefined(this.publicKeyIndex[signature.publicKey.toString()]), + 'Signature has no matching public key'); + $.checkState(this.isValidSignature(transaction, signature)); + this.signatures[this.publicKeyIndex[signature.publicKey.toString()]] = signature; + this._updateScript(); + return this; +}; -exports.encrypt = function (self, chunk) { - while (self._cache.length < chunk.length) { - self._cache = Buffer.concat([self._cache, getBlock(self)]) - } +MultiSigInput.prototype._updateScript = function() { + this.setScript(Script.buildMultisigIn( + this.publicKeys, + this.threshold, + this._createSignatures() + )); + return this; +}; - var pad = self._cache.slice(0, chunk.length) - self._cache = self._cache.slice(chunk.length) - return xor(chunk, pad) -} +MultiSigInput.prototype._createSignatures = function() { + return _.map( + _.filter(this.signatures, function(signature) { return !_.isUndefined(signature); }), + function(signature) { + return BufferUtil.concat([ + signature.signature.toDER(), + BufferUtil.integerAsSingleByteBuffer(signature.sigtype) + ]); + } + ); +}; -}).call(this,require("buffer").Buffer) -},{"buffer":52,"buffer-xor":51}],39:[function(require,module,exports){ -var aes = require('./aes') -var Buffer = require('safe-buffer').Buffer -var Transform = require('cipher-base') -var inherits = require('inherits') +MultiSigInput.prototype.clearSignatures = function() { + this.signatures = new Array(this.publicKeys.length); + this._updateScript(); +}; -function StreamCipher (mode, key, iv, decrypt) { - Transform.call(this) +MultiSigInput.prototype.isFullySigned = function() { + return this.countSignatures() === this.threshold; +}; - this._cipher = new aes.AES(key) - this._prev = Buffer.from(iv) - this._cache = Buffer.allocUnsafe(0) - this._secCache = Buffer.allocUnsafe(0) - this._decrypt = decrypt - this._mode = mode -} +MultiSigInput.prototype.countMissingSignatures = function() { + return this.threshold - this.countSignatures(); +}; -inherits(StreamCipher, Transform) +MultiSigInput.prototype.countSignatures = function() { + return _.reduce(this.signatures, function(sum, signature) { + return sum + (!!signature); + }, 0); +}; -StreamCipher.prototype._update = function (chunk) { - return this._mode.encrypt(this, chunk, this._decrypt) -} +MultiSigInput.prototype.publicKeysWithoutSignature = function() { + var self = this; + return _.filter(this.publicKeys, function(publicKey) { + return !(self.signatures[self.publicKeyIndex[publicKey.toString()]]); + }); +}; -StreamCipher.prototype._final = function () { - this._cipher.scrub() -} +MultiSigInput.prototype.isValidSignature = function(transaction, signature) { + // FIXME: Refactor signature so this is not necessary + signature.signature.nhashtype = signature.sigtype; + return Sighash.verify( + transaction, + signature.signature, + signature.publicKey, + signature.inputIndex, + this.output.script + ); +}; -module.exports = StreamCipher +/** + * + * @param {Buffer[]} signatures + * @param {PublicKey[]} publicKeys + * @param {Transaction} transaction + * @param {Integer} inputIndex + * @param {Input} input + * @returns {TransactionSignature[]} + */ +MultiSigInput.normalizeSignatures = function(transaction, input, inputIndex, signatures, publicKeys) { + return publicKeys.map(function (pubKey) { + var signatureMatch = null; + signatures = signatures.filter(function (signatureBuffer) { + if (signatureMatch) { + return true; + } -},{"./aes":23,"cipher-base":53,"inherits":104,"safe-buffer":148}],40:[function(require,module,exports){ -var DES = require('browserify-des') -var aes = require('browserify-aes/browser') -var aesModes = require('browserify-aes/modes') -var desModes = require('browserify-des/modes') -var ebtk = require('evp_bytestokey') + var signature = new TransactionSignature({ + signature: Signature.fromTxFormat(signatureBuffer), + publicKey: pubKey, + prevTxId: input.prevTxId, + outputIndex: input.outputIndex, + inputIndex: inputIndex, + sigtype: Signature.SIGHASH_ALL + }); -function createCipher (suite, password) { - suite = suite.toLowerCase() + signature.signature.nhashtype = signature.sigtype; + var isMatch = Sighash.verify( + transaction, + signature.signature, + signature.publicKey, + signature.inputIndex, + input.output.script + ); - var keyLen, ivLen - if (aesModes[suite]) { - keyLen = aesModes[suite].key - ivLen = aesModes[suite].iv - } else if (desModes[suite]) { - keyLen = desModes[suite].key * 8 - ivLen = desModes[suite].iv - } else { - throw new TypeError('invalid suite type') - } + if (isMatch) { + signatureMatch = signature; + return false; + } - var keys = ebtk(password, false, keyLen, ivLen) - return createCipheriv(suite, keys.key, keys.iv) -} + return true; + }); -function createDecipher (suite, password) { - suite = suite.toLowerCase() + return signatureMatch ? signatureMatch : null; + }); +}; - var keyLen, ivLen - if (aesModes[suite]) { - keyLen = aesModes[suite].key - ivLen = aesModes[suite].iv - } else if (desModes[suite]) { - keyLen = desModes[suite].key * 8 - ivLen = desModes[suite].iv - } else { - throw new TypeError('invalid suite type') - } +MultiSigInput.OPCODES_SIZE = 1; // 0 +MultiSigInput.SIGNATURE_SIZE = 73; // size (1) + DER (<=72) - var keys = ebtk(password, false, keyLen, ivLen) - return createDecipheriv(suite, keys.key, keys.iv) -} +MultiSigInput.prototype._estimateSize = function() { + return MultiSigInput.OPCODES_SIZE + + this.threshold * MultiSigInput.SIGNATURE_SIZE; +}; -function createCipheriv (suite, key, iv) { - suite = suite.toLowerCase() - if (aesModes[suite]) return aes.createCipheriv(suite, key, iv) - if (desModes[suite]) return new DES({ key: key, iv: iv, mode: suite }) +module.exports = MultiSigInput; - throw new TypeError('invalid suite type') -} +},{"../../crypto/signature":11,"../../publickey":25,"../../script":26,"../../util/buffer":44,"../../util/preconditions":46,"../output":36,"../sighash":37,"../signature":39,"../transaction":40,"./input":31,"inherits":153,"lodash":156}],33:[function(require,module,exports){ +(function (Buffer){ +'use strict'; -function createDecipheriv (suite, key, iv) { - suite = suite.toLowerCase() - if (aesModes[suite]) return aes.createDecipheriv(suite, key, iv) - if (desModes[suite]) return new DES({ key: key, iv: iv, mode: suite, decrypt: true }) +/* jshint maxparams:5 */ - throw new TypeError('invalid suite type') -} +var _ = require('lodash'); +var inherits = require('inherits'); +var Input = require('./input'); +var Output = require('../output'); +var $ = require('../../util/preconditions'); -function getCiphers () { - return Object.keys(desModes).concat(aes.getCiphers()) -} - -exports.createCipher = exports.Cipher = createCipher -exports.createCipheriv = exports.Cipheriv = createCipheriv -exports.createDecipher = exports.Decipher = createDecipher -exports.createDecipheriv = exports.Decipheriv = createDecipheriv -exports.listCiphers = exports.getCiphers = getCiphers - -},{"browserify-aes/browser":25,"browserify-aes/modes":36,"browserify-des":41,"browserify-des/modes":42,"evp_bytestokey":88}],41:[function(require,module,exports){ -var CipherBase = require('cipher-base') -var des = require('des.js') -var inherits = require('inherits') -var Buffer = require('safe-buffer').Buffer +var Script = require('../../script'); +var Signature = require('../../crypto/signature'); +var Sighash = require('../sighash'); +var SighashWitness = require('../sighashwitness'); +var BufferWriter = require('../../encoding/bufferwriter'); +var BufferUtil = require('../../util/buffer'); +var TransactionSignature = require('../signature'); -var modes = { - 'des-ede3-cbc': des.CBC.instantiate(des.EDE), - 'des-ede3': des.EDE, - 'des-ede-cbc': des.CBC.instantiate(des.EDE), - 'des-ede': des.EDE, - 'des-cbc': des.CBC.instantiate(des.DES), - 'des-ecb': des.DES -} -modes.des = modes['des-cbc'] -modes.des3 = modes['des-ede3-cbc'] -module.exports = DES -inherits(DES, CipherBase) -function DES (opts) { - CipherBase.call(this) - var modeName = opts.mode.toLowerCase() - var mode = modes[modeName] - var type - if (opts.decrypt) { - type = 'decrypt' - } else { - type = 'encrypt' - } - var key = opts.key - if (!Buffer.isBuffer(key)) { - key = Buffer.from(key) - } - if (modeName === 'des-ede' || modeName === 'des-ede-cbc') { - key = Buffer.concat([key, key.slice(0, 8)]) - } - var iv = opts.iv - if (!Buffer.isBuffer(iv)) { - iv = Buffer.from(iv) +/** + * @constructor + */ +function MultiSigScriptHashInput(input, pubkeys, threshold, signatures, nestedWitness, opts) { + /* jshint maxstatements:20 */ + opts = opts || {}; + Input.apply(this, arguments); + var self = this; + pubkeys = pubkeys || input.publicKeys; + threshold = threshold || input.threshold; + signatures = signatures || input.signatures; + this.nestedWitness = nestedWitness ? true : false; + if (opts.noSorting) { + this.publicKeys = pubkeys; + } else { + this.publicKeys = _.sortBy(pubkeys, function(publicKey) { return publicKey.toString('hex'); }); } - this._des = mode.create({ - key: key, - iv: iv, - type: type - }) -} -DES.prototype._update = function (data) { - return Buffer.from(this._des.update(data)) -} -DES.prototype._final = function () { - return Buffer.from(this._des.final()) -} - -},{"cipher-base":53,"des.js":61,"inherits":104,"safe-buffer":148}],42:[function(require,module,exports){ -exports['des-ecb'] = { - key: 8, - iv: 0 -} -exports['des-cbc'] = exports.des = { - key: 8, - iv: 8 -} -exports['des-ede3-cbc'] = exports.des3 = { - key: 24, - iv: 8 -} -exports['des-ede3'] = { - key: 24, - iv: 0 -} -exports['des-ede-cbc'] = { - key: 16, - iv: 8 -} -exports['des-ede'] = { - key: 16, - iv: 0 -} - -},{}],43:[function(require,module,exports){ -(function (Buffer){ -var bn = require('bn.js'); -var randomBytes = require('randombytes'); -module.exports = crt; -function blind(priv) { - var r = getr(priv); - var blinder = r.toRed(bn.mont(priv.modulus)) - .redPow(new bn(priv.publicExponent)).fromRed(); - return { - blinder: blinder, - unblinder:r.invm(priv.modulus) - }; -} -function crt(msg, priv) { - var blinds = blind(priv); - var len = priv.modulus.byteLength(); - var mod = bn.mont(priv.modulus); - var blinded = new bn(msg).mul(blinds.blinder).umod(priv.modulus); - var c1 = blinded.toRed(bn.mont(priv.prime1)); - var c2 = blinded.toRed(bn.mont(priv.prime2)); - var qinv = priv.coefficient; - var p = priv.prime1; - var q = priv.prime2; - var m1 = c1.redPow(priv.exponent1); - var m2 = c2.redPow(priv.exponent2); - m1 = m1.fromRed(); - m2 = m2.fromRed(); - var h = m1.isub(m2).imul(qinv).umod(p); - h.imul(q); - m2.iadd(h); - return new Buffer(m2.imul(blinds.unblinder).umod(priv.modulus).toArray(false, len)); -} -crt.getr = getr; -function getr(priv) { - var len = priv.modulus.byteLength(); - var r = new bn(randomBytes(len)); - while (r.cmp(priv.modulus) >= 0 || !r.umod(priv.prime1) || !r.umod(priv.prime2)) { - r = new bn(randomBytes(len)); + this.redeemScript = Script.buildMultisigOut(this.publicKeys, threshold, opts); + if (this.nestedWitness) { + var nested = Script.buildWitnessMultisigOutFromScript(this.redeemScript); + $.checkState(Script.buildScriptHashOut(nested).equals(this.output.script), + 'Provided public keys don\'t hash to the provided output (nested witness)'); + var scriptSig = new Script(); + scriptSig.add(nested.toBuffer()); + this.setScript(scriptSig); + } else { + $.checkState(Script.buildScriptHashOut(this.redeemScript).equals(this.output.script), + 'Provided public keys don\'t hash to the provided output'); } - return r; -} -}).call(this,require("buffer").Buffer) -},{"bn.js":20,"buffer":52,"randombytes":132}],44:[function(require,module,exports){ -module.exports = require('./browser/algorithms.json') - -},{"./browser/algorithms.json":45}],45:[function(require,module,exports){ -module.exports={ - "sha224WithRSAEncryption": { - "sign": "rsa", - "hash": "sha224", - "id": "302d300d06096086480165030402040500041c" - }, - "RSA-SHA224": { - "sign": "ecdsa/rsa", - "hash": "sha224", - "id": "302d300d06096086480165030402040500041c" - }, - "sha256WithRSAEncryption": { - "sign": "rsa", - "hash": "sha256", - "id": "3031300d060960864801650304020105000420" - }, - "RSA-SHA256": { - "sign": "ecdsa/rsa", - "hash": "sha256", - "id": "3031300d060960864801650304020105000420" - }, - "sha384WithRSAEncryption": { - "sign": "rsa", - "hash": "sha384", - "id": "3041300d060960864801650304020205000430" - }, - "RSA-SHA384": { - "sign": "ecdsa/rsa", - "hash": "sha384", - "id": "3041300d060960864801650304020205000430" - }, - "sha512WithRSAEncryption": { - "sign": "rsa", - "hash": "sha512", - "id": "3051300d060960864801650304020305000440" - }, - "RSA-SHA512": { - "sign": "ecdsa/rsa", - "hash": "sha512", - "id": "3051300d060960864801650304020305000440" - }, - "RSA-SHA1": { - "sign": "rsa", - "hash": "sha1", - "id": "3021300906052b0e03021a05000414" - }, - "ecdsa-with-SHA1": { - "sign": "ecdsa", - "hash": "sha1", - "id": "" - }, - "sha256": { - "sign": "ecdsa", - "hash": "sha256", - "id": "" - }, - "sha224": { - "sign": "ecdsa", - "hash": "sha224", - "id": "" - }, - "sha384": { - "sign": "ecdsa", - "hash": "sha384", - "id": "" - }, - "sha512": { - "sign": "ecdsa", - "hash": "sha512", - "id": "" - }, - "DSA-SHA": { - "sign": "dsa", - "hash": "sha1", - "id": "" - }, - "DSA-SHA1": { - "sign": "dsa", - "hash": "sha1", - "id": "" - }, - "DSA": { - "sign": "dsa", - "hash": "sha1", - "id": "" - }, - "DSA-WITH-SHA224": { - "sign": "dsa", - "hash": "sha224", - "id": "" - }, - "DSA-SHA224": { - "sign": "dsa", - "hash": "sha224", - "id": "" - }, - "DSA-WITH-SHA256": { - "sign": "dsa", - "hash": "sha256", - "id": "" - }, - "DSA-SHA256": { - "sign": "dsa", - "hash": "sha256", - "id": "" - }, - "DSA-WITH-SHA384": { - "sign": "dsa", - "hash": "sha384", - "id": "" - }, - "DSA-SHA384": { - "sign": "dsa", - "hash": "sha384", - "id": "" - }, - "DSA-WITH-SHA512": { - "sign": "dsa", - "hash": "sha512", - "id": "" - }, - "DSA-SHA512": { - "sign": "dsa", - "hash": "sha512", - "id": "" - }, - "DSA-RIPEMD160": { - "sign": "dsa", - "hash": "rmd160", - "id": "" - }, - "ripemd160WithRSA": { - "sign": "rsa", - "hash": "rmd160", - "id": "3021300906052b2403020105000414" - }, - "RSA-RIPEMD160": { - "sign": "rsa", - "hash": "rmd160", - "id": "3021300906052b2403020105000414" - }, - "md5WithRSAEncryption": { - "sign": "rsa", - "hash": "md5", - "id": "3020300c06082a864886f70d020505000410" - }, - "RSA-MD5": { - "sign": "rsa", - "hash": "md5", - "id": "3020300c06082a864886f70d020505000410" - } + this.publicKeyIndex = {}; + _.each(this.publicKeys, function(publicKey, index) { + self.publicKeyIndex[publicKey.toString()] = index; + }); + this.threshold = threshold; + // Empty array of signatures + this.signatures = signatures ? this._deserializeSignatures(signatures) : new Array(this.publicKeys.length); } +inherits(MultiSigScriptHashInput, Input); -},{}],46:[function(require,module,exports){ -module.exports={ - "1.3.132.0.10": "secp256k1", - "1.3.132.0.33": "p224", - "1.2.840.10045.3.1.1": "p192", - "1.2.840.10045.3.1.7": "p256", - "1.3.132.0.34": "p384", - "1.3.132.0.35": "p521" -} +MultiSigScriptHashInput.prototype.toObject = function() { + var obj = Input.prototype.toObject.apply(this, arguments); + obj.threshold = this.threshold; + obj.publicKeys = _.map(this.publicKeys, function(publicKey) { return publicKey.toString(); }); + obj.signatures = this._serializeSignatures(); + return obj; +}; -},{}],47:[function(require,module,exports){ -(function (Buffer){ -var createHash = require('create-hash') -var stream = require('stream') -var inherits = require('inherits') -var sign = require('./sign') -var verify = require('./verify') +MultiSigScriptHashInput.prototype._deserializeSignatures = function(signatures) { + return _.map(signatures, function(signature) { + if (!signature) { + return undefined; + } + return new TransactionSignature(signature); + }); +}; -var algorithms = require('./algorithms.json') -Object.keys(algorithms).forEach(function (key) { - algorithms[key].id = new Buffer(algorithms[key].id, 'hex') - algorithms[key.toLowerCase()] = algorithms[key] -}) +MultiSigScriptHashInput.prototype._serializeSignatures = function() { + return _.map(this.signatures, function(signature) { + if (!signature) { + return undefined; + } + return signature.toObject(); + }); +}; -function Sign (algorithm) { - stream.Writable.call(this) +MultiSigScriptHashInput.prototype.getScriptCode = function() { + var writer = new BufferWriter(); + if (!this.redeemScript.hasCodeseparators()) { + var redeemScriptBuffer = this.redeemScript.toBuffer(); + writer.writeVarintNum(redeemScriptBuffer.length); + writer.write(redeemScriptBuffer); + } else { + throw new Error('@TODO'); + } + return writer.toBuffer(); +}; - var data = algorithms[algorithm] - if (!data) throw new Error('Unknown message digest') +MultiSigScriptHashInput.prototype.getSighash = function(transaction, privateKey, index, sigtype) { + var self = this; + var hash; + if (self.nestedWitness) { + var scriptCode = self.getScriptCode(); + var satoshisBuffer = self.getSatoshisBuffer(); + hash = SighashWitness.sighash(transaction, sigtype, index, scriptCode, satoshisBuffer); + } else { + hash = Sighash.sighash(transaction, sigtype, index, self.redeemScript); + } + return hash; +}; - this._hashType = data.hash - this._hash = createHash(data.hash) - this._tag = data.id - this._signType = data.sign -} -inherits(Sign, stream.Writable) +MultiSigScriptHashInput.prototype.getSignatures = function(transaction, privateKey, index, sigtype) { + $.checkState(this.output instanceof Output); + sigtype = sigtype || Signature.SIGHASH_ALL; -Sign.prototype._write = function _write (data, _, done) { - this._hash.update(data) - done() -} + var self = this; + var results = []; + _.each(this.publicKeys, function(publicKey) { + if (publicKey.toString() === privateKey.publicKey.toString()) { + var signature; + if (self.nestedWitness) { + var scriptCode = self.getScriptCode(); + var satoshisBuffer = self.getSatoshisBuffer(); + signature = SighashWitness.sign(transaction, privateKey, sigtype, index, scriptCode, satoshisBuffer); + } else { + signature = Sighash.sign(transaction, privateKey, sigtype, index, self.redeemScript); + } + results.push(new TransactionSignature({ + publicKey: privateKey.publicKey, + prevTxId: self.prevTxId, + outputIndex: self.outputIndex, + inputIndex: index, + signature: signature, + sigtype: sigtype + })); + } + }); + return results; +}; -Sign.prototype.update = function update (data, enc) { - if (typeof data === 'string') data = new Buffer(data, enc) +MultiSigScriptHashInput.prototype.addSignature = function(transaction, signature) { + $.checkState(!this.isFullySigned(), 'All needed signatures have already been added'); + $.checkArgument(!_.isUndefined(this.publicKeyIndex[signature.publicKey.toString()]), + 'Signature has no matching public key'); + $.checkState(this.isValidSignature(transaction, signature)); + this.signatures[this.publicKeyIndex[signature.publicKey.toString()]] = signature; + this._updateScript(); + return this; +}; - this._hash.update(data) - return this -} +MultiSigScriptHashInput.prototype._updateScript = function() { + if (this.nestedWitness) { + var stack = [ + new Buffer(0), + ]; + var signatures = this._createSignatures(); + for (var i = 0; i < signatures.length; i++) { + stack.push(signatures[i]); + } + stack.push(this.redeemScript.toBuffer()); + this.setWitnesses(stack); + } else { + var scriptSig = Script.buildP2SHMultisigIn( + this.publicKeys, + this.threshold, + this._createSignatures(), + { cachedMultisig: this.redeemScript } + ); + this.setScript(scriptSig); + } + return this; +}; -Sign.prototype.sign = function signMethod (key, enc) { - this.end() - var hash = this._hash.digest() - var sig = sign(hash, key, this._hashType, this._signType, this._tag) +MultiSigScriptHashInput.prototype._createSignatures = function() { + return _.map( + _.filter(this.signatures, function(signature) { return !_.isUndefined(signature); }), + function(signature) { + return BufferUtil.concat([ + signature.signature.toDER(), + BufferUtil.integerAsSingleByteBuffer(signature.sigtype) + ]); + } + ); +}; - return enc ? sig.toString(enc) : sig -} +MultiSigScriptHashInput.prototype.clearSignatures = function() { + this.signatures = new Array(this.publicKeys.length); + this._updateScript(); +}; -function Verify (algorithm) { - stream.Writable.call(this) +MultiSigScriptHashInput.prototype.isFullySigned = function() { + return this.countSignatures() === this.threshold; +}; - var data = algorithms[algorithm] - if (!data) throw new Error('Unknown message digest') +MultiSigScriptHashInput.prototype.countMissingSignatures = function() { + return this.threshold - this.countSignatures(); +}; - this._hash = createHash(data.hash) - this._tag = data.id - this._signType = data.sign -} -inherits(Verify, stream.Writable) +MultiSigScriptHashInput.prototype.countSignatures = function() { + return _.reduce(this.signatures, function(sum, signature) { + return sum + (!!signature); + }, 0); +}; -Verify.prototype._write = function _write (data, _, done) { - this._hash.update(data) - done() -} +MultiSigScriptHashInput.prototype.publicKeysWithoutSignature = function() { + var self = this; + return _.filter(this.publicKeys, function(publicKey) { + return !(self.signatures[self.publicKeyIndex[publicKey.toString()]]); + }); +}; -Verify.prototype.update = function update (data, enc) { - if (typeof data === 'string') data = new Buffer(data, enc) +MultiSigScriptHashInput.prototype.isValidSignature = function(transaction, signature) { + if (this.nestedWitness) { + signature.signature.nhashtype = signature.sigtype; + var scriptCode = this.getScriptCode(); + var satoshisBuffer = this.getSatoshisBuffer(); + return SighashWitness.verify( + transaction, + signature.signature, + signature.publicKey, + signature.inputIndex, + scriptCode, + satoshisBuffer + ); + } else { + // FIXME: Refactor signature so this is not necessary + signature.signature.nhashtype = signature.sigtype; + return Sighash.verify( + transaction, + signature.signature, + signature.publicKey, + signature.inputIndex, + this.redeemScript + ); + } +}; - this._hash.update(data) - return this -} +MultiSigScriptHashInput.OPCODES_SIZE = 7; // serialized size (<=3) + 0 .. N .. M OP_CHECKMULTISIG +MultiSigScriptHashInput.SIGNATURE_SIZE = 74; // size (1) + DER (<=72) + sighash (1) +MultiSigScriptHashInput.PUBKEY_SIZE = 34; // size (1) + DER (<=33) -Verify.prototype.verify = function verifyMethod (key, sig, enc) { - if (typeof sig === 'string') sig = new Buffer(sig, enc) +MultiSigScriptHashInput.prototype._estimateSize = function() { + return MultiSigScriptHashInput.OPCODES_SIZE + + this.threshold * MultiSigScriptHashInput.SIGNATURE_SIZE + + this.publicKeys.length * MultiSigScriptHashInput.PUBKEY_SIZE; +}; - this.end() - var hash = this._hash.digest() - return verify(sig, hash, key, this._signType, this._tag) -} +module.exports = MultiSigScriptHashInput; -function createSign (algorithm) { - return new Sign(algorithm) -} +}).call(this,require("buffer").Buffer) +},{"../../crypto/signature":11,"../../encoding/bufferwriter":15,"../../script":26,"../../util/buffer":44,"../../util/preconditions":46,"../output":36,"../sighash":37,"../sighashwitness":38,"../signature":39,"./input":31,"buffer":100,"inherits":153,"lodash":156}],34:[function(require,module,exports){ +'use strict'; -function createVerify (algorithm) { - return new Verify(algorithm) -} +var inherits = require('inherits'); -module.exports = { - Sign: createSign, - Verify: createVerify, - createSign: createSign, - createVerify: createVerify -} +var $ = require('../../util/preconditions'); +var BufferUtil = require('../../util/buffer'); -}).call(this,require("buffer").Buffer) -},{"./algorithms.json":45,"./sign":48,"./verify":49,"buffer":52,"create-hash":56,"inherits":104,"stream":157}],48:[function(require,module,exports){ -(function (Buffer){ -// much of this based on https://github.com/indutny/self-signed/blob/gh-pages/lib/rsa.js -var createHmac = require('create-hmac') -var crt = require('browserify-rsa') -var EC = require('elliptic').ec -var BN = require('bn.js') -var parseKeys = require('parse-asn1') -var curves = require('./curves.json') +var Input = require('./input'); +var Output = require('../output'); +var Sighash = require('../sighash'); +var Script = require('../../script'); +var Signature = require('../../crypto/signature'); +var TransactionSignature = require('../signature'); -function sign (hash, key, hashType, signType, tag) { - var priv = parseKeys(key) - if (priv.curve) { - // rsa keys can be interpreted as ecdsa ones in openssl - if (signType !== 'ecdsa' && signType !== 'ecdsa/rsa') throw new Error('wrong private key type') - return ecSign(hash, priv) - } else if (priv.type === 'dsa') { - if (signType !== 'dsa') throw new Error('wrong private key type') - return dsaSign(hash, priv, hashType) - } else { - if (signType !== 'rsa' && signType !== 'ecdsa/rsa') throw new Error('wrong private key type') +/** + * Represents a special kind of input of PayToPublicKey kind. + * @constructor + */ +function PublicKeyInput() { + Input.apply(this, arguments); +} +inherits(PublicKeyInput, Input); + +/** + * @param {Transaction} transaction - the transaction to be signed + * @param {PrivateKey} privateKey - the private key with which to sign the transaction + * @param {number} index - the index of the input in the transaction input vector + * @param {number=} sigtype - the type of signature, defaults to Signature.SIGHASH_ALL + * @return {Array} of objects that can be + */ +PublicKeyInput.prototype.getSignatures = function(transaction, privateKey, index, sigtype) { + $.checkState(this.output instanceof Output); + sigtype = sigtype || Signature.SIGHASH_ALL; + var publicKey = privateKey.toPublicKey(); + if (publicKey.toString() === this.output.script.getPublicKey().toString('hex')) { + return [new TransactionSignature({ + publicKey: publicKey, + prevTxId: this.prevTxId, + outputIndex: this.outputIndex, + inputIndex: index, + signature: Sighash.sign(transaction, privateKey, sigtype, index, this.output.script), + sigtype: sigtype + })]; } - hash = Buffer.concat([tag, hash]) - var len = priv.modulus.byteLength() - var pad = [ 0, 1 ] - while (hash.length + pad.length + 1 < len) pad.push(0xff) - pad.push(0x00) - var i = -1 - while (++i < hash.length) pad.push(hash[i]) + return []; +}; - var out = crt(pad, priv) - return out -} +/** + * Add the provided signature + * + * @param {Object} signature + * @param {PublicKey} signature.publicKey + * @param {Signature} signature.signature + * @param {number=} signature.sigtype + * @return {PublicKeyInput} this, for chaining + */ +PublicKeyInput.prototype.addSignature = function(transaction, signature) { + $.checkState(this.isValidSignature(transaction, signature), 'Signature is invalid'); + this.setScript(Script.buildPublicKeyIn( + signature.signature.toDER(), + signature.sigtype + )); + return this; +}; -function ecSign (hash, priv) { - var curveId = curves[priv.curve.join('.')] - if (!curveId) throw new Error('unknown curve ' + priv.curve.join('.')) +/** + * Clear the input's signature + * @return {PublicKeyHashInput} this, for chaining + */ +PublicKeyInput.prototype.clearSignatures = function() { + this.setScript(Script.empty()); + return this; +}; - var curve = new EC(curveId) - var key = curve.keyFromPrivate(priv.privateKey) - var out = key.sign(hash) +/** + * Query whether the input is signed + * @return {boolean} + */ +PublicKeyInput.prototype.isFullySigned = function() { + return this.script.isPublicKeyIn(); +}; - return new Buffer(out.toDER()) -} +PublicKeyInput.SCRIPT_MAX_SIZE = 73; // sigsize (1 + 72) -function dsaSign (hash, priv, algo) { - var x = priv.params.priv_key - var p = priv.params.p - var q = priv.params.q - var g = priv.params.g - var r = new BN(0) - var k - var H = bits2int(hash, q).mod(q) - var s = false - var kv = getKey(x, q, hash, algo) - while (s === false) { - k = makeKey(q, kv, algo) - r = makeR(g, k, p, q) - s = k.invm(q).imul(H.add(x.mul(r))).mod(q) - if (s.cmpn(0) === 0) { - s = false - r = new BN(0) - } - } - return toDER(r, s) -} +PublicKeyInput.prototype._estimateSize = function() { + return PublicKeyInput.SCRIPT_MAX_SIZE; +}; -function toDER (r, s) { - r = r.toArray() - s = s.toArray() +module.exports = PublicKeyInput; - // Pad values - if (r[0] & 0x80) r = [ 0 ].concat(r) - if (s[0] & 0x80) s = [ 0 ].concat(s) +},{"../../crypto/signature":11,"../../script":26,"../../util/buffer":44,"../../util/preconditions":46,"../output":36,"../sighash":37,"../signature":39,"./input":31,"inherits":153}],35:[function(require,module,exports){ +'use strict'; - var total = r.length + s.length + 4 - var res = [ 0x30, total, 0x02, r.length ] - res = res.concat(r, [ 0x02, s.length ], s) - return new Buffer(res) -} +var inherits = require('inherits'); -function getKey (x, q, hash, algo) { - x = new Buffer(x.toArray()) - if (x.length < q.byteLength()) { - var zeros = new Buffer(q.byteLength() - x.length) - zeros.fill(0) - x = Buffer.concat([ zeros, x ]) - } - var hlen = hash.length - var hbits = bits2octets(hash, q) - var v = new Buffer(hlen) - v.fill(1) - var k = new Buffer(hlen) - k.fill(0) - k = createHmac(algo, k).update(v).update(new Buffer([ 0 ])).update(x).update(hbits).digest() - v = createHmac(algo, k).update(v).digest() - k = createHmac(algo, k).update(v).update(new Buffer([ 1 ])).update(x).update(hbits).digest() - v = createHmac(algo, k).update(v).digest() - return { k: k, v: v } -} +var $ = require('../../util/preconditions'); +var BufferUtil = require('../../util/buffer'); -function bits2int (obits, q) { - var bits = new BN(obits) - var shift = (obits.length << 3) - q.bitLength() - if (shift > 0) bits.ishrn(shift) - return bits +var Hash = require('../../crypto/hash'); +var Input = require('./input'); +var Output = require('../output'); +var Sighash = require('../sighash'); +var Script = require('../../script'); +var Signature = require('../../crypto/signature'); +var TransactionSignature = require('../signature'); + +/** + * Represents a special kind of input of PayToPublicKeyHash kind. + * @constructor + */ +function PublicKeyHashInput() { + Input.apply(this, arguments); } +inherits(PublicKeyHashInput, Input); -function bits2octets (bits, q) { - bits = bits2int(bits, q) - bits = bits.mod(q) - var out = new Buffer(bits.toArray()) - if (out.length < q.byteLength()) { - var zeros = new Buffer(q.byteLength() - out.length) - zeros.fill(0) - out = Buffer.concat([ zeros, out ]) +/* jshint maxparams: 5 */ +/** + * @param {Transaction} transaction - the transaction to be signed + * @param {PrivateKey} privateKey - the private key with which to sign the transaction + * @param {number} index - the index of the input in the transaction input vector + * @param {number=} sigtype - the type of signature, defaults to Signature.SIGHASH_ALL + * @param {Buffer=} hashData - the precalculated hash of the public key associated with the privateKey provided + * @return {Array} of objects that can be + */ +PublicKeyHashInput.prototype.getSignatures = function(transaction, privateKey, index, sigtype, hashData) { + $.checkState(this.output instanceof Output); + hashData = hashData || Hash.sha256ripemd160(privateKey.publicKey.toBuffer()); + sigtype = sigtype || Signature.SIGHASH_ALL; + + if (BufferUtil.equals(hashData, this.output.script.getPublicKeyHash())) { + return [new TransactionSignature({ + publicKey: privateKey.publicKey, + prevTxId: this.prevTxId, + outputIndex: this.outputIndex, + inputIndex: index, + signature: Sighash.sign(transaction, privateKey, sigtype, index, this.output.script), + sigtype: sigtype + })]; } - return out -} + return []; +}; +/* jshint maxparams: 3 */ -function makeKey (q, kv, algo) { - var t - var k +/** + * Add the provided signature + * + * @param {Object} signature + * @param {PublicKey} signature.publicKey + * @param {Signature} signature.signature + * @param {number=} signature.sigtype + * @return {PublicKeyHashInput} this, for chaining + */ +PublicKeyHashInput.prototype.addSignature = function(transaction, signature) { + $.checkState(this.isValidSignature(transaction, signature), 'Signature is invalid'); + this.setScript(Script.buildPublicKeyHashIn( + signature.publicKey, + signature.signature.toDER(), + signature.sigtype + )); + return this; +}; - do { - t = new Buffer(0) +/** + * Clear the input's signature + * @return {PublicKeyHashInput} this, for chaining + */ +PublicKeyHashInput.prototype.clearSignatures = function() { + this.setScript(Script.empty()); + return this; +}; - while (t.length * 8 < q.bitLength()) { - kv.v = createHmac(algo, kv.k).update(kv.v).digest() - t = Buffer.concat([ t, kv.v ]) - } +/** + * Query whether the input is signed + * @return {boolean} + */ +PublicKeyHashInput.prototype.isFullySigned = function() { + return this.script.isPublicKeyHashIn(); +}; - k = bits2int(t, q) - kv.k = createHmac(algo, kv.k).update(kv.v).update(new Buffer([ 0 ])).digest() - kv.v = createHmac(algo, kv.k).update(kv.v).digest() - } while (k.cmp(q) !== -1) +PublicKeyHashInput.SCRIPT_MAX_SIZE = 73 + 34; // sigsize (1 + 72) + pubkey (1 + 33) - return k -} +PublicKeyHashInput.prototype._estimateSize = function() { + return PublicKeyHashInput.SCRIPT_MAX_SIZE; +}; -function makeR (g, k, p, q) { - return g.toRed(BN.mont(p)).redPow(k).fromRed().mod(q) -} +module.exports = PublicKeyHashInput; -module.exports = sign -module.exports.getKey = getKey -module.exports.makeKey = makeKey +},{"../../crypto/hash":8,"../../crypto/signature":11,"../../script":26,"../../util/buffer":44,"../../util/preconditions":46,"../output":36,"../sighash":37,"../signature":39,"./input":31,"inherits":153}],36:[function(require,module,exports){ +'use strict'; -}).call(this,require("buffer").Buffer) -},{"./curves.json":46,"bn.js":20,"browserify-rsa":43,"buffer":52,"create-hmac":58,"elliptic":71,"parse-asn1":115}],49:[function(require,module,exports){ -(function (Buffer){ -// much of this based on https://github.com/indutny/self-signed/blob/gh-pages/lib/rsa.js -var BN = require('bn.js') -var EC = require('elliptic').ec -var parseKeys = require('parse-asn1') -var curves = require('./curves.json') +var _ = require('lodash'); +var BN = require('../crypto/bn'); +var buffer = require('buffer'); +var bufferUtil = require('../util/buffer'); +var JSUtil = require('../util/js'); +var BufferWriter = require('../encoding/bufferwriter'); +var Script = require('../script'); +var $ = require('../util/preconditions'); +var errors = require('../errors'); -function verify (sig, hash, key, signType, tag) { - var pub = parseKeys(key) - if (pub.type === 'ec') { - // rsa keys can be interpreted as ecdsa ones in openssl - if (signType !== 'ecdsa' && signType !== 'ecdsa/rsa') throw new Error('wrong public key type') - return ecVerify(sig, hash, pub) - } else if (pub.type === 'dsa') { - if (signType !== 'dsa') throw new Error('wrong public key type') - return dsaVerify(sig, hash, pub) - } else { - if (signType !== 'rsa' && signType !== 'ecdsa/rsa') throw new Error('wrong public key type') - } - hash = Buffer.concat([tag, hash]) - var len = pub.modulus.byteLength() - var pad = [ 1 ] - var padNum = 0 - while (hash.length + pad.length + 2 < len) { - pad.push(0xff) - padNum++ +var MAX_SAFE_INTEGER = 0x1fffffffffffff; + +function Output(args) { + if (!(this instanceof Output)) { + return new Output(args); } - pad.push(0x00) - var i = -1 - while (++i < hash.length) { - pad.push(hash[i]) + if (_.isObject(args)) { + this.satoshis = args.satoshis; + if (bufferUtil.isBuffer(args.script)) { + this._scriptBuffer = args.script; + } else { + var script; + if (_.isString(args.script) && JSUtil.isHexa(args.script)) { + script = new buffer.Buffer(args.script, 'hex'); + } else { + script = args.script; + } + this.setScript(script); + } + } else { + throw new TypeError('Unrecognized argument for Output'); } - pad = new Buffer(pad) - var red = BN.mont(pub.modulus) - sig = new BN(sig).toRed(red) - - sig = sig.redPow(new BN(pub.publicExponent)) - sig = new Buffer(sig.fromRed().toArray()) - var out = padNum < 8 ? 1 : 0 - len = Math.min(sig.length, pad.length) - if (sig.length !== pad.length) out = 1 - - i = -1 - while (++i < len) out |= sig[i] ^ pad[i] - return out === 0 } -function ecVerify (sig, hash, pub) { - var curveId = curves[pub.data.algorithm.curve.join('.')] - if (!curveId) throw new Error('unknown curve ' + pub.data.algorithm.curve.join('.')) +Object.defineProperty(Output.prototype, 'script', { + configurable: false, + enumerable: true, + get: function() { + if (this._script) { + return this._script; + } else { + this.setScriptFromBuffer(this._scriptBuffer); + return this._script; + } - var curve = new EC(curveId) - var pubkey = pub.data.subjectPrivateKey.data + } +}); - return curve.verify(hash, sig, pubkey) -} +Object.defineProperty(Output.prototype, 'satoshis', { + configurable: false, + enumerable: true, + get: function() { + return this._satoshis; + }, + set: function(num) { + if (num instanceof BN) { + this._satoshisBN = num; + this._satoshis = num.toNumber(); + } else if (_.isString(num)) { + this._satoshis = parseInt(num); + this._satoshisBN = BN.fromNumber(this._satoshis); + } else { + $.checkArgument( + JSUtil.isNaturalNumber(num), + 'Output satoshis is not a natural number' + ); + this._satoshisBN = BN.fromNumber(num); + this._satoshis = num; + } + $.checkState( + JSUtil.isNaturalNumber(this._satoshis), + 'Output satoshis is not a natural number' + ); + } +}); -function dsaVerify (sig, hash, pub) { - var p = pub.data.p - var q = pub.data.q - var g = pub.data.g - var y = pub.data.pub_key - var unpacked = parseKeys.signature.decode(sig, 'der') - var s = unpacked.s - var r = unpacked.r - checkValue(s, q) - checkValue(r, q) - var montp = BN.mont(p) - var w = s.invm(q) - var v = g.toRed(montp) - .redPow(new BN(hash).mul(w).mod(q)) - .fromRed() - .mul(y.toRed(montp).redPow(r.mul(w).mod(q)).fromRed()) - .mod(p) - .mod(q) - return v.cmp(r) === 0 -} +Output.prototype.invalidSatoshis = function() { + if (this._satoshis > MAX_SAFE_INTEGER) { + return 'transaction txout satoshis greater than max safe integer'; + } + if (this._satoshis !== this._satoshisBN.toNumber()) { + return 'transaction txout satoshis has corrupted value'; + } + if (this._satoshis < 0) { + return 'transaction txout negative'; + } + return false; +}; -function checkValue (b, q) { - if (b.cmpn(0) <= 0) throw new Error('invalid sig') - if (b.cmp(q) >= q) throw new Error('invalid sig') -} +Output.prototype.toObject = Output.prototype.toJSON = function toObject() { + var obj = { + satoshis: this.satoshis + }; + obj.script = this._scriptBuffer.toString('hex'); + return obj; +}; -module.exports = verify +Output.fromObject = function(data) { + return new Output(data); +}; -}).call(this,require("buffer").Buffer) -},{"./curves.json":46,"bn.js":20,"buffer":52,"elliptic":71,"parse-asn1":115}],50:[function(require,module,exports){ -(function (global){ -/*! https://mths.be/punycode v1.4.1 by @mathias */ -;(function(root) { - - /** Detect free variables */ - var freeExports = typeof exports == 'object' && exports && - !exports.nodeType && exports; - var freeModule = typeof module == 'object' && module && - !module.nodeType && module; - var freeGlobal = typeof global == 'object' && global; - if ( - freeGlobal.global === freeGlobal || - freeGlobal.window === freeGlobal || - freeGlobal.self === freeGlobal - ) { - root = freeGlobal; - } +Output.prototype.setScriptFromBuffer = function(buffer) { + this._scriptBuffer = buffer; + try { + this._script = Script.fromBuffer(this._scriptBuffer); + this._script._isOutput = true; + } catch(e) { + if (e instanceof errors.Script.InvalidBuffer) { + this._script = null; + } else { + throw e; + } + } +}; - /** - * The `punycode` object. - * @name punycode - * @type Object - */ - var punycode, +Output.prototype.setScript = function(script) { + if (script instanceof Script) { + this._scriptBuffer = script.toBuffer(); + this._script = script; + this._script._isOutput = true; + } else if (_.isString(script)) { + this._script = Script.fromString(script); + this._scriptBuffer = this._script.toBuffer(); + this._script._isOutput = true; + } else if (bufferUtil.isBuffer(script)) { + this.setScriptFromBuffer(script); + } else { + throw new TypeError('Invalid argument type: script'); + } + return this; +}; - /** Highest positive signed 32-bit float value */ - maxInt = 2147483647, // aka. 0x7FFFFFFF or 2^31-1 +Output.prototype.inspect = function() { + var scriptStr; + if (this.script) { + scriptStr = this.script.inspect(); + } else { + scriptStr = this._scriptBuffer.toString('hex'); + } + return ''; +}; - /** Bootstring parameters */ - base = 36, - tMin = 1, - tMax = 26, - skew = 38, - damp = 700, - initialBias = 72, - initialN = 128, // 0x80 - delimiter = '-', // '\x2D' +Output.fromBufferReader = function(br) { + var obj = {}; + obj.satoshis = br.readUInt64LEBN(); + var size = br.readVarintNum(); + if (size !== 0) { + obj.script = br.read(size); + } else { + obj.script = new buffer.Buffer([]); + } + return new Output(obj); +}; - /** Regular expressions */ - regexPunycode = /^xn--/, - regexNonASCII = /[^\x20-\x7E]/, // unprintable ASCII chars + non-ASCII chars - regexSeparators = /[\x2E\u3002\uFF0E\uFF61]/g, // RFC 3490 separators +Output.prototype.toBufferWriter = function(writer) { + if (!writer) { + writer = new BufferWriter(); + } + writer.writeUInt64LEBN(this._satoshisBN); + var script = this._scriptBuffer; + writer.writeVarintNum(script.length); + writer.write(script); + return writer; +}; - /** Error messages */ - errors = { - 'overflow': 'Overflow: input needs wider integers to process', - 'not-basic': 'Illegal input >= 0x80 (not a basic code point)', - 'invalid-input': 'Invalid input' - }, +module.exports = Output; - /** Convenience shortcuts */ - baseMinusTMin = base - tMin, - floor = Math.floor, - stringFromCharCode = String.fromCharCode, +},{"../crypto/bn":6,"../encoding/bufferwriter":15,"../errors":17,"../script":26,"../util/buffer":44,"../util/js":45,"../util/preconditions":46,"buffer":100,"lodash":156}],37:[function(require,module,exports){ +(function (Buffer){ +'use strict'; - /** Temporary variable */ - key; +var buffer = require('buffer'); - /*--------------------------------------------------------------------------*/ +var Signature = require('../crypto/signature'); +var Script = require('../script'); +var Output = require('./output'); +var BufferReader = require('../encoding/bufferreader'); +var BufferWriter = require('../encoding/bufferwriter'); +var BN = require('../crypto/bn'); +var Hash = require('../crypto/hash'); +var ECDSA = require('../crypto/ecdsa'); +var $ = require('../util/preconditions'); +var _ = require('lodash'); - /** - * A generic error utility function. - * @private - * @param {String} type The error type. - * @returns {Error} Throws a `RangeError` with the applicable error message. - */ - function error(type) { - throw new RangeError(errors[type]); - } +var SIGHASH_SINGLE_BUG = '0000000000000000000000000000000000000000000000000000000000000001'; +var BITS_64_ON = 'ffffffffffffffff'; - /** - * A generic `Array#map` utility function. - * @private - * @param {Array} array The array to iterate over. - * @param {Function} callback The function that gets called for every array - * item. - * @returns {Array} A new array of values returned by the callback function. - */ - function map(array, fn) { - var length = array.length; - var result = []; - while (length--) { - result[length] = fn(array[length]); - } - return result; - } +/** + * Returns a buffer of length 32 bytes with the hash that needs to be signed + * for OP_CHECKSIG. + * + * @name Signing.sighash + * @param {Transaction} transaction the transaction to sign + * @param {number} sighashType the type of the hash + * @param {number} inputNumber the input index for the signature + * @param {Script} subscript the script that will be signed + */ +var sighash = function sighash(transaction, sighashType, inputNumber, subscript) { + var Transaction = require('./transaction'); + var Input = require('./input'); - /** - * A simple `Array#map`-like wrapper to work with domain name strings or email - * addresses. - * @private - * @param {String} domain The domain name or email address. - * @param {Function} callback The function that gets called for every - * character. - * @returns {Array} A new string of characters returned by the callback - * function. - */ - function mapDomain(string, fn) { - var parts = string.split('@'); - var result = ''; - if (parts.length > 1) { - // In email addresses, only the domain name should be punycoded. Leave - // the local part (i.e. everything up to `@`) intact. - result = parts[0] + '@'; - string = parts[1]; - } - // Avoid `split(regex)` for IE8 compatibility. See #17. - string = string.replace(regexSeparators, '\x2E'); - var labels = string.split('.'); - var encoded = map(labels, fn).join('.'); - return result + encoded; - } + var i; + // Copy transaction + var txcopy = Transaction.shallowCopy(transaction); - /** - * Creates an array containing the numeric code points of each Unicode - * character in the string. While JavaScript uses UCS-2 internally, - * this function will convert a pair of surrogate halves (each of which - * UCS-2 exposes as separate characters) into a single code point, - * matching UTF-16. - * @see `punycode.ucs2.encode` - * @see - * @memberOf punycode.ucs2 - * @name decode - * @param {String} string The Unicode input string (UCS-2). - * @returns {Array} The new array of code points. - */ - function ucs2decode(string) { - var output = [], - counter = 0, - length = string.length, - value, - extra; - while (counter < length) { - value = string.charCodeAt(counter++); - if (value >= 0xD800 && value <= 0xDBFF && counter < length) { - // high surrogate, and there is a next character - extra = string.charCodeAt(counter++); - if ((extra & 0xFC00) == 0xDC00) { // low surrogate - output.push(((value & 0x3FF) << 10) + (extra & 0x3FF) + 0x10000); - } else { - // unmatched surrogate; only append this code unit, in case the next - // code unit is the high surrogate of a surrogate pair - output.push(value); - counter--; - } - } else { - output.push(value); - } - } - return output; - } + // Copy script + subscript = new Script(subscript); + subscript.removeCodeseparators(); - /** - * Creates a string based on an array of numeric code points. - * @see `punycode.ucs2.decode` - * @memberOf punycode.ucs2 - * @name encode - * @param {Array} codePoints The array of numeric code points. - * @returns {String} The new Unicode string (UCS-2). - */ - function ucs2encode(array) { - return map(array, function(value) { - var output = ''; - if (value > 0xFFFF) { - value -= 0x10000; - output += stringFromCharCode(value >>> 10 & 0x3FF | 0xD800); - value = 0xDC00 | value & 0x3FF; - } - output += stringFromCharCode(value); - return output; - }).join(''); - } + for (i = 0; i < txcopy.inputs.length; i++) { + // Blank signatures for other inputs + txcopy.inputs[i] = new Input(txcopy.inputs[i]).setScript(Script.empty()); + } - /** - * Converts a basic code point into a digit/integer. - * @see `digitToBasic()` - * @private - * @param {Number} codePoint The basic numeric code point value. - * @returns {Number} The numeric value of a basic code point (for use in - * representing integers) in the range `0` to `base - 1`, or `base` if - * the code point does not represent a value. - */ - function basicToDigit(codePoint) { - if (codePoint - 48 < 10) { - return codePoint - 22; - } - if (codePoint - 65 < 26) { - return codePoint - 65; - } - if (codePoint - 97 < 26) { - return codePoint - 97; - } - return base; - } + txcopy.inputs[inputNumber] = new Input(txcopy.inputs[inputNumber]).setScript(subscript); - /** - * Converts a digit/integer into a basic code point. - * @see `basicToDigit()` - * @private - * @param {Number} digit The numeric value of a basic code point. - * @returns {Number} The basic code point whose value (when used for - * representing integers) is `digit`, which needs to be in the range - * `0` to `base - 1`. If `flag` is non-zero, the uppercase form is - * used; else, the lowercase form is used. The behavior is undefined - * if `flag` is non-zero and `digit` has no uppercase form. - */ - function digitToBasic(digit, flag) { - // 0..25 map to ASCII a..z or A..Z - // 26..35 map to ASCII 0..9 - return digit + 22 + 75 * (digit < 26) - ((flag != 0) << 5); - } + if ((sighashType & 31) === Signature.SIGHASH_NONE || + (sighashType & 31) === Signature.SIGHASH_SINGLE) { - /** - * Bias adaptation function as per section 3.4 of RFC 3492. - * https://tools.ietf.org/html/rfc3492#section-3.4 - * @private - */ - function adapt(delta, numPoints, firstTime) { - var k = 0; - delta = firstTime ? floor(delta / damp) : delta >> 1; - delta += floor(delta / numPoints); - for (/* no initialization */; delta > baseMinusTMin * tMax >> 1; k += base) { - delta = floor(delta / baseMinusTMin); - } - return floor(k + (baseMinusTMin + 1) * delta / (delta + skew)); - } + // clear all sequenceNumbers + for (i = 0; i < txcopy.inputs.length; i++) { + if (i !== inputNumber) { + txcopy.inputs[i].sequenceNumber = 0; + } + } + } - /** - * Converts a Punycode string of ASCII-only symbols to a string of Unicode - * symbols. - * @memberOf punycode - * @param {String} input The Punycode string of ASCII-only symbols. - * @returns {String} The resulting string of Unicode symbols. - */ - function decode(input) { - // Don't use UCS-2 - var output = [], - inputLength = input.length, - out, - i = 0, - n = initialN, - bias = initialBias, - basic, - j, - index, - oldi, - w, - k, - digit, - t, - /** Cached calculation results */ - baseMinusT; + if ((sighashType & 31) === Signature.SIGHASH_NONE) { + txcopy.outputs = []; - // Handle the basic code points: let `basic` be the number of input code - // points before the last delimiter, or `0` if there is none, then copy - // the first basic code points to the output. + } else if ((sighashType & 31) === Signature.SIGHASH_SINGLE) { + // The SIGHASH_SINGLE bug. + // https://bitcointalk.org/index.php?topic=260595.0 + if (inputNumber >= txcopy.outputs.length) { + return Buffer.from(SIGHASH_SINGLE_BUG, 'hex'); + } - basic = input.lastIndexOf(delimiter); - if (basic < 0) { - basic = 0; - } + txcopy.outputs.length = inputNumber + 1; - for (j = 0; j < basic; ++j) { - // if it's not a basic code point - if (input.charCodeAt(j) >= 0x80) { - error('not-basic'); - } - output.push(input.charCodeAt(j)); - } + for (i = 0; i < inputNumber; i++) { + txcopy.outputs[i] = new Output({ + satoshis: BN.fromBuffer(new buffer.Buffer(BITS_64_ON, 'hex')), + script: Script.empty() + }); + } + } - // Main decoding loop: start just after the last delimiter if any basic code - // points were copied; start at the beginning otherwise. + if (sighashType & Signature.SIGHASH_ANYONECANPAY) { + txcopy.inputs = [txcopy.inputs[inputNumber]]; + } - for (index = basic > 0 ? basic + 1 : 0; index < inputLength; /* no final expression */) { + var buf = new BufferWriter() + .write(txcopy.toBuffer()) + .writeInt32LE(sighashType) + .toBuffer(); + var ret = Hash.sha256sha256(buf); + ret = new BufferReader(ret).readReverse(); + return ret; +}; - // `index` is the index of the next character to be consumed. - // Decode a generalized variable-length integer into `delta`, - // which gets added to `i`. The overflow checking is easier - // if we increase `i` as we go, then subtract off its starting - // value at the end to obtain `delta`. - for (oldi = i, w = 1, k = base; /* no condition */; k += base) { +/** + * Create a signature + * + * @name Signing.sign + * @param {Transaction} transaction + * @param {PrivateKey} privateKey + * @param {number} sighash + * @param {number} inputIndex + * @param {Script} subscript + * @return {Signature} + */ +function sign(transaction, privateKey, sighashType, inputIndex, subscript) { + var hashbuf = sighash(transaction, sighashType, inputIndex, subscript); + var sig = ECDSA.sign(hashbuf, privateKey, 'little').set({ + nhashtype: sighashType + }); + return sig; +} - if (index >= inputLength) { - error('invalid-input'); - } +/** + * Verify a signature + * + * @name Signing.verify + * @param {Transaction} transaction + * @param {Signature} signature + * @param {PublicKey} publicKey + * @param {number} inputIndex + * @param {Script} subscript + * @return {boolean} + */ +function verify(transaction, signature, publicKey, inputIndex, subscript) { + $.checkArgument(!_.isUndefined(transaction)); + $.checkArgument(!_.isUndefined(signature) && !_.isUndefined(signature.nhashtype)); + var hashbuf = sighash(transaction, signature.nhashtype, inputIndex, subscript); + return ECDSA.verify(hashbuf, signature, publicKey, 'little'); +} - digit = basicToDigit(input.charCodeAt(index++)); +/** + * @namespace Signing + */ +module.exports = { + sighash: sighash, + sign: sign, + verify: verify +}; - if (digit >= base || digit > floor((maxInt - i) / w)) { - error('overflow'); - } +}).call(this,require("buffer").Buffer) +},{"../crypto/bn":6,"../crypto/ecdsa":7,"../crypto/hash":8,"../crypto/signature":11,"../encoding/bufferreader":14,"../encoding/bufferwriter":15,"../script":26,"../util/preconditions":46,"./input":30,"./output":36,"./transaction":40,"buffer":100,"lodash":156}],38:[function(require,module,exports){ +(function (Buffer){ +'use strict'; - i += digit * w; - t = k <= bias ? tMin : (k >= bias + tMax ? tMax : k - bias); +/* jshint maxparams:5 */ - if (digit < t) { - break; - } +var Signature = require('../crypto/signature'); +var Script = require('../script'); +var Output = require('./output'); +var BufferReader = require('../encoding/bufferreader'); +var BufferWriter = require('../encoding/bufferwriter'); +var BN = require('../crypto/bn'); +var Hash = require('../crypto/hash'); +var ECDSA = require('../crypto/ecdsa'); +var $ = require('../util/preconditions'); +var _ = require('lodash'); - baseMinusT = base - t; - if (w > floor(maxInt / baseMinusT)) { - error('overflow'); - } +/** + * Returns a buffer of length 32 bytes with the hash that needs to be signed + * for witness programs as defined by: + * https://github.com/bitcoin/bips/blob/master/bip-0143.mediawiki + * + * @name Signing.sighash + * @param {Transaction} transaction the transaction to sign + * @param {number} sighashType the type of the hash + * @param {number} inputNumber the input index for the signature + * @param {Buffer} scriptCode + * @param {Buffer} satoshisBuffer + */ +var sighash = function sighash(transaction, sighashType, inputNumber, scriptCode, satoshisBuffer) { + /* jshint maxstatements: 50 */ - w *= baseMinusT; + var hashPrevouts; + var hashSequence; + var hashOutputs; - } + if (!(sighashType & Signature.SIGHASH_ANYONECANPAY)) { + var buffers = []; + for (var n = 0; n < transaction.inputs.length; n++) { + var input = transaction.inputs[n]; + var prevTxIdBuffer = new BufferReader(input.prevTxId).readReverse(); + buffers.push(prevTxIdBuffer); + var outputIndexBuffer = new Buffer(new Array(4)); + outputIndexBuffer.writeUInt32LE(input.outputIndex, 0); + buffers.push(outputIndexBuffer); + } + hashPrevouts = Hash.sha256sha256(Buffer.concat(buffers)); + } - out = output.length + 1; - bias = adapt(i - oldi, out, oldi == 0); + if (!(sighashType & Signature.SIGHASH_ANYONECANPAY) && + (sighashType & 0x1f) !== Signature.SIGHASH_SINGLE && (sighashType & 0x1f) !== Signature.SIGHASH_NONE) { - // `i` was supposed to wrap around from `out` to `0`, - // incrementing `n` each time, so we'll fix that now: - if (floor(i / out) > maxInt - n) { - error('overflow'); - } + var sequenceBuffers = []; + for (var m = 0; m < transaction.inputs.length; m++) { + var sequenceBuffer = new Buffer(new Array(4)); + sequenceBuffer.writeUInt32LE(transaction.inputs[m].sequenceNumber, 0); + sequenceBuffers.push(sequenceBuffer); + } + hashSequence = Hash.sha256sha256(Buffer.concat(sequenceBuffers)); + } - n += floor(i / out); - i %= out; - - // Insert `n` at position `i` of the output - output.splice(i++, 0, n); + var outputWriter = new BufferWriter(); + if ((sighashType & 0x1f) !== Signature.SIGHASH_SINGLE && (sighashType & 0x1f) !== Signature.SIGHASH_NONE) { + for (var p = 0; p < transaction.outputs.length; p++) { + transaction.outputs[p].toBufferWriter(outputWriter); + } + hashOutputs = Hash.sha256sha256(outputWriter.toBuffer()); + } else if ((sighashType & 0x1f) === Signature.SIGHASH_SINGLE && inputNumber < transaction.outputs.length) { + transaction.outputs[inputNumber].toBufferWriter(outputWriter); + hashOutputs = Hash.sha256sha256(outputWriter.toBuffer()); + } - } + // Version + var writer = new BufferWriter(); + writer.writeUInt32LE(transaction.version); - return ucs2encode(output); - } + // Input prevouts/nSequence (none/all, depending on flags) + writer.write(hashPrevouts); + writer.write(hashSequence); - /** - * Converts a string of Unicode symbols (e.g. a domain name label) to a - * Punycode string of ASCII-only symbols. - * @memberOf punycode - * @param {String} input The string of Unicode symbols. - * @returns {String} The resulting Punycode string of ASCII-only symbols. - */ - function encode(input) { - var n, - delta, - handledCPCount, - basicLength, - bias, - j, - m, - q, - k, - t, - currentValue, - output = [], - /** `inputLength` will hold the number of code points in `input`. */ - inputLength, - /** Cached calculation results */ - handledCPCountPlusOne, - baseMinusT, - qMinusT; + // The input being signed (replacing the scriptSig with scriptCode + amount) + // The prevout may already be contained in hashPrevout, and the nSequence + // may already be contain in hashSequence. + var outpointId = new BufferReader(transaction.inputs[inputNumber].prevTxId).readReverse(); + writer.write(outpointId); + writer.writeUInt32LE(transaction.inputs[inputNumber].outputIndex); - // Convert the input in UCS-2 to Unicode - input = ucs2decode(input); + writer.write(scriptCode); - // Cache the length - inputLength = input.length; + writer.write(satoshisBuffer); - // Initialize the state - n = initialN; - delta = 0; - bias = initialBias; + writer.writeUInt32LE(transaction.inputs[inputNumber].sequenceNumber); - // Handle the basic code points - for (j = 0; j < inputLength; ++j) { - currentValue = input[j]; - if (currentValue < 0x80) { - output.push(stringFromCharCode(currentValue)); - } - } + // Outputs (none/one/all, depending on flags) + writer.write(hashOutputs); - handledCPCount = basicLength = output.length; + // Locktime + writer.writeUInt32LE(transaction.nLockTime); - // `handledCPCount` is the number of code points that have been handled; - // `basicLength` is the number of basic code points. + // Sighash type + writer.writeInt32LE(sighashType); - // Finish the basic string - if it is not empty - with a delimiter - if (basicLength) { - output.push(delimiter); - } + return Hash.sha256sha256(writer.toBuffer()); - // Main encoding loop: - while (handledCPCount < inputLength) { +}; - // All non-basic code points < n have been handled already. Find the next - // larger one: - for (m = maxInt, j = 0; j < inputLength; ++j) { - currentValue = input[j]; - if (currentValue >= n && currentValue < m) { - m = currentValue; - } - } +/** + * Create a signature + * + * @name Signing.sign + * @param {Transaction} transaction + * @param {PrivateKey} privateKey + * @param {number} sighash + * @param {number} inputIndex + * @param {Script} subscript + * @return {Signature} + */ +function sign(transaction, privateKey, sighashType, inputIndex, scriptCode, satoshisBuffer) { + var hashbuf = sighash(transaction, sighashType, inputIndex, scriptCode, satoshisBuffer); + var sig = ECDSA.sign(hashbuf, privateKey).set({ + nhashtype: sighashType + }); + return sig; +} - // Increase `delta` enough to advance the decoder's state to , - // but guard against overflow - handledCPCountPlusOne = handledCPCount + 1; - if (m - n > floor((maxInt - delta) / handledCPCountPlusOne)) { - error('overflow'); - } +/** + * Verify a signature + * + * @name Signing.verify + * @param {Transaction} transaction + * @param {Signature} signature + * @param {PublicKey} publicKey + * @param {number} inputIndex + * @param {Script} subscript + * @return {boolean} + */ +function verify(transaction, signature, publicKey, inputIndex, scriptCode, satoshisBuffer) { + $.checkArgument(!_.isUndefined(transaction)); + $.checkArgument(!_.isUndefined(signature) && !_.isUndefined(signature.nhashtype)); + var hashbuf = sighash(transaction, signature.nhashtype, inputIndex, scriptCode, satoshisBuffer); + return ECDSA.verify(hashbuf, signature, publicKey); +} - delta += (m - n) * handledCPCountPlusOne; - n = m; +/** + * @namespace Signing + */ +module.exports = { + sighash: sighash, + sign: sign, + verify: verify +}; - for (j = 0; j < inputLength; ++j) { - currentValue = input[j]; +}).call(this,require("buffer").Buffer) +},{"../crypto/bn":6,"../crypto/ecdsa":7,"../crypto/hash":8,"../crypto/signature":11,"../encoding/bufferreader":14,"../encoding/bufferwriter":15,"../script":26,"../util/preconditions":46,"./output":36,"buffer":100,"lodash":156}],39:[function(require,module,exports){ +(function (Buffer){ +'use strict'; - if (currentValue < n && ++delta > maxInt) { - error('overflow'); - } +var _ = require('lodash'); +var $ = require('../util/preconditions'); +var inherits = require('inherits'); +var BufferUtil = require('../util/buffer'); +var JSUtil = require('../util/js'); - if (currentValue == n) { - // Represent delta as a generalized variable-length integer - for (q = delta, k = base; /* no condition */; k += base) { - t = k <= bias ? tMin : (k >= bias + tMax ? tMax : k - bias); - if (q < t) { - break; - } - qMinusT = q - t; - baseMinusT = base - t; - output.push( - stringFromCharCode(digitToBasic(t + qMinusT % baseMinusT, 0)) - ); - q = floor(qMinusT / baseMinusT); - } +var PublicKey = require('../publickey'); +var errors = require('../errors'); +var Signature = require('../crypto/signature'); - output.push(stringFromCharCode(digitToBasic(q, 0))); - bias = adapt(delta, handledCPCountPlusOne, handledCPCount == basicLength); - delta = 0; - ++handledCPCount; - } - } +/** + * @desc + * Wrapper around Signature with fields related to signing a transaction specifically + * + * @param {Object|string|TransactionSignature} arg + * @constructor + */ +function TransactionSignature(arg) { + if (!(this instanceof TransactionSignature)) { + return new TransactionSignature(arg); + } + if (arg instanceof TransactionSignature) { + return arg; + } + if (_.isObject(arg)) { + return this._fromObject(arg); + } + throw new errors.InvalidArgument('TransactionSignatures must be instantiated from an object'); +} +inherits(TransactionSignature, Signature); - ++delta; - ++n; +TransactionSignature.prototype._fromObject = function(arg) { + this._checkObjectArgs(arg); + this.publicKey = new PublicKey(arg.publicKey); + this.prevTxId = BufferUtil.isBuffer(arg.prevTxId) ? arg.prevTxId : Buffer.from(arg.prevTxId, 'hex'); + this.outputIndex = arg.outputIndex; + this.inputIndex = arg.inputIndex; + this.signature = (arg.signature instanceof Signature) ? arg.signature : + BufferUtil.isBuffer(arg.signature) ? Signature.fromBuffer(arg.signature) : + Signature.fromString(arg.signature); + this.sigtype = arg.sigtype; + return this; +}; - } - return output.join(''); - } +TransactionSignature.prototype._checkObjectArgs = function(arg) { + $.checkArgument(PublicKey(arg.publicKey), 'publicKey'); + $.checkArgument(!_.isUndefined(arg.inputIndex), 'inputIndex'); + $.checkArgument(!_.isUndefined(arg.outputIndex), 'outputIndex'); + $.checkState(_.isNumber(arg.inputIndex), 'inputIndex must be a number'); + $.checkState(_.isNumber(arg.outputIndex), 'outputIndex must be a number'); + $.checkArgument(arg.signature, 'signature'); + $.checkArgument(arg.prevTxId, 'prevTxId'); + $.checkState(arg.signature instanceof Signature || + BufferUtil.isBuffer(arg.signature) || + JSUtil.isHexa(arg.signature), 'signature must be a buffer or hexa value'); + $.checkState(BufferUtil.isBuffer(arg.prevTxId) || + JSUtil.isHexa(arg.prevTxId), 'prevTxId must be a buffer or hexa value'); + $.checkArgument(arg.sigtype, 'sigtype'); + $.checkState(_.isNumber(arg.sigtype), 'sigtype must be a number'); +}; - /** - * Converts a Punycode string representing a domain name or an email address - * to Unicode. Only the Punycoded parts of the input will be converted, i.e. - * it doesn't matter if you call it on a string that has already been - * converted to Unicode. - * @memberOf punycode - * @param {String} input The Punycoded domain name or email address to - * convert to Unicode. - * @returns {String} The Unicode representation of the given Punycode - * string. - */ - function toUnicode(input) { - return mapDomain(input, function(string) { - return regexPunycode.test(string) - ? decode(string.slice(4).toLowerCase()) - : string; - }); - } +/** + * Serializes a transaction to a plain JS object + * @return {Object} + */ +TransactionSignature.prototype.toObject = TransactionSignature.prototype.toJSON = function toObject() { + return { + publicKey: this.publicKey.toString(), + prevTxId: this.prevTxId.toString('hex'), + outputIndex: this.outputIndex, + inputIndex: this.inputIndex, + signature: this.signature.toString(), + sigtype: this.sigtype + }; +}; - /** - * Converts a Unicode string representing a domain name or an email address to - * Punycode. Only the non-ASCII parts of the domain name will be converted, - * i.e. it doesn't matter if you call it with a domain that's already in - * ASCII. - * @memberOf punycode - * @param {String} input The domain name or email address to convert, as a - * Unicode string. - * @returns {String} The Punycode representation of the given domain name or - * email address. - */ - function toASCII(input) { - return mapDomain(input, function(string) { - return regexNonASCII.test(string) - ? 'xn--' + encode(string) - : string; - }); - } +/** + * Builds a TransactionSignature from an object + * @param {Object} object + * @return {TransactionSignature} + */ +TransactionSignature.fromObject = function(object) { + $.checkArgument(object); + return new TransactionSignature(object); +}; - /*--------------------------------------------------------------------------*/ +module.exports = TransactionSignature; - /** Define the public API */ - punycode = { - /** - * A string representing the current Punycode.js version number. - * @memberOf punycode - * @type String - */ - 'version': '1.4.1', - /** - * An object of methods to convert from JavaScript's internal character - * representation (UCS-2) to Unicode code points, and back. - * @see - * @memberOf punycode - * @type Object - */ - 'ucs2': { - 'decode': ucs2decode, - 'encode': ucs2encode - }, - 'decode': decode, - 'encode': encode, - 'toASCII': toASCII, - 'toUnicode': toUnicode - }; +}).call(this,require("buffer").Buffer) +},{"../crypto/signature":11,"../errors":17,"../publickey":25,"../util/buffer":44,"../util/js":45,"../util/preconditions":46,"buffer":100,"inherits":153,"lodash":156}],40:[function(require,module,exports){ +(function (Buffer){ +'use strict'; - /** Expose `punycode` */ - // Some AMD build optimizers, like r.js, check for specific condition patterns - // like the following: - if ( - typeof define == 'function' && - typeof define.amd == 'object' && - define.amd - ) { - define('punycode', function() { - return punycode; - }); - } else if (freeExports && freeModule) { - if (module.exports == freeExports) { - // in Node.js, io.js, or RingoJS v0.8.0+ - freeModule.exports = punycode; - } else { - // in Narwhal or RingoJS v0.7.0- - for (key in punycode) { - punycode.hasOwnProperty(key) && (freeExports[key] = punycode[key]); - } - } - } else { - // in Rhino or a web browser - root.punycode = punycode; - } +var _ = require('lodash'); +var $ = require('../util/preconditions'); +var buffer = require('buffer'); +var compare = Buffer.compare || require('buffer-compare'); -}(this)); +var errors = require('../errors'); +var BufferUtil = require('../util/buffer'); +var JSUtil = require('../util/js'); +var BufferReader = require('../encoding/bufferreader'); +var BufferWriter = require('../encoding/bufferwriter'); +var Hash = require('../crypto/hash'); +var Signature = require('../crypto/signature'); +var Sighash = require('./sighash'); +var SighashWitness = require('./sighashwitness'); -}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {}) -},{}],51:[function(require,module,exports){ -(function (Buffer){ -module.exports = function xor (a, b) { - var length = Math.min(a.length, b.length) - var buffer = new Buffer(length) +var Address = require('../address'); +var UnspentOutput = require('./unspentoutput'); +var Input = require('./input'); +var PublicKeyHashInput = Input.PublicKeyHash; +var PublicKeyInput = Input.PublicKey; +var MultiSigScriptHashInput = Input.MultiSigScriptHash; +var MultiSigInput = Input.MultiSig; +var Output = require('./output'); +var Script = require('../script'); +var PrivateKey = require('../privatekey'); +var BN = require('../crypto/bn'); - for (var i = 0; i < length; ++i) { - buffer[i] = a[i] ^ b[i] +/** + * Represents a transaction, a set of inputs and outputs to change ownership of tokens + * + * @param {*} serialized + * @constructor + */ +function Transaction(serialized, opts) { + if (!(this instanceof Transaction)) { + return new Transaction(serialized); } + this.inputs = []; + this.outputs = []; + this._inputAmount = undefined; + this._outputAmount = undefined; - return buffer + if (serialized) { + if (serialized instanceof Transaction) { + return Transaction.shallowCopy(serialized); + } else if (JSUtil.isHexa(serialized)) { + this.fromString(serialized); + } else if (BufferUtil.isBuffer(serialized)) { + this.fromBuffer(serialized); + } else if (_.isObject(serialized)) { + this.fromObject(serialized, opts); + } else { + throw new errors.InvalidArgument('Must provide an object or string to deserialize a transaction'); + } + } else { + this._newTransaction(); + } } +var CURRENT_VERSION = 1; +var DEFAULT_NLOCKTIME = 0; +var MAX_BLOCK_SIZE = 1000000; -}).call(this,require("buffer").Buffer) -},{"buffer":52}],52:[function(require,module,exports){ -/*! - * The buffer module from node.js, for the browser. - * - * @author Feross Aboukhadijeh - * @license MIT - */ -/* eslint-disable no-proto */ +// Minimum amount for an output for it not to be considered a dust output +Transaction.DUST_AMOUNT = 546; -'use strict' +// Margin of error to allow fees in the vecinity of the expected value but doesn't allow a big difference +Transaction.FEE_SECURITY_MARGIN = 150; -var base64 = require('base64-js') -var ieee754 = require('ieee754') +// max amount of satoshis in circulation +Transaction.MAX_MONEY = 21000000 * 1e8; -exports.Buffer = Buffer -exports.SlowBuffer = SlowBuffer -exports.INSPECT_MAX_BYTES = 50 +// nlocktime limit to be considered block height rather than a timestamp +Transaction.NLOCKTIME_BLOCKHEIGHT_LIMIT = 5e8; -var K_MAX_LENGTH = 0x7fffffff -exports.kMaxLength = K_MAX_LENGTH +// Max value for an unsigned 32 bit value +Transaction.NLOCKTIME_MAX_VALUE = 4294967295; + +// Value used for fee estimation (satoshis per kilobyte) +Transaction.FEE_PER_KB = 100000; + +// Safe upper bound for change address script size in bytes +Transaction.CHANGE_OUTPUT_MAX_SIZE = 20 + 4 + 34 + 4; +Transaction.MAXIMUM_EXTRA_SIZE = 4 + 9 + 9 + 4; + +/* Constructors and Serialization */ /** - * If `Buffer.TYPED_ARRAY_SUPPORT`: - * === true Use Uint8Array implementation (fastest) - * === false Print warning and recommend using `buffer` v4.x which has an Object - * implementation (most compatible, even IE6) - * - * Browsers that support typed arrays are IE 10+, Firefox 4+, Chrome 7+, Safari 5.1+, - * Opera 11.6+, iOS 4.2+. + * Create a 'shallow' copy of the transaction, by serializing and deserializing + * it dropping any additional information that inputs and outputs may have hold * - * We report that the browser does not support typed arrays if the are not subclassable - * using __proto__. Firefox 4-29 lacks support for adding new properties to `Uint8Array` - * (See: https://bugzilla.mozilla.org/show_bug.cgi?id=695438). IE 10 lacks support - * for __proto__ and has a buggy typed array implementation. + * @param {Transaction} transaction + * @return {Transaction} */ -Buffer.TYPED_ARRAY_SUPPORT = typedArraySupport() - -if (!Buffer.TYPED_ARRAY_SUPPORT && typeof console !== 'undefined' && - typeof console.error === 'function') { - console.error( - 'This browser lacks typed array (Uint8Array) support which is required by ' + - '`buffer` v5.x. Use `buffer` v4.x if you require old browser support.' - ) -} - -function typedArraySupport () { - // Can typed array instances can be augmented? - try { - var arr = new Uint8Array(1) - arr.__proto__ = { __proto__: Uint8Array.prototype, foo: function () { return 42 } } - return arr.foo() === 42 - } catch (e) { - return false - } -} +Transaction.shallowCopy = function(transaction) { + var copy = new Transaction(transaction.toBuffer()); + return copy; +}; -Object.defineProperty(Buffer.prototype, 'parent', { +var hashProperty = { + configurable: false, enumerable: true, - get: function () { - if (!Buffer.isBuffer(this)) return undefined - return this.buffer + get: function() { + this._hash = new BufferReader(this._getHash()).readReverse().toString('hex'); + return this._hash; } -}) +}; -Object.defineProperty(Buffer.prototype, 'offset', { +var witnessHashProperty = { + configurable: false, enumerable: true, - get: function () { - if (!Buffer.isBuffer(this)) return undefined - return this.byteOffset + get: function() { + return new BufferReader(this._getWitnessHash()).readReverse().toString('hex'); } -}) +}; -function createBuffer (length) { - if (length > K_MAX_LENGTH) { - throw new RangeError('The value "' + length + '" is invalid for option "size"') +Object.defineProperty(Transaction.prototype, 'witnessHash', witnessHashProperty); +Object.defineProperty(Transaction.prototype, 'hash', hashProperty); +Object.defineProperty(Transaction.prototype, 'id', hashProperty); + +var ioProperty = { + configurable: false, + enumerable: true, + get: function() { + return this._getInputAmount(); } - // Return an augmented `Uint8Array` instance - var buf = new Uint8Array(length) - buf.__proto__ = Buffer.prototype - return buf -} +}; +Object.defineProperty(Transaction.prototype, 'inputAmount', ioProperty); +ioProperty.get = function() { + return this._getOutputAmount(); +}; +Object.defineProperty(Transaction.prototype, 'outputAmount', ioProperty); /** - * The Buffer constructor returns instances of `Uint8Array` that have their - * prototype changed to `Buffer.prototype`. Furthermore, `Buffer` is a subclass of - * `Uint8Array`, so the returned instances will have all the node `Buffer` methods - * and the `Uint8Array` methods. Square bracket notation works as expected -- it - * returns a single octet. - * - * The `Uint8Array` prototype remains unmodified. + * Retrieve the little endian hash of the transaction (used for serialization) + * @return {Buffer} */ +Transaction.prototype._getHash = function() { + return Hash.sha256sha256(this.toBuffer(true)); +}; -function Buffer (arg, encodingOrOffset, length) { - // Common case. - if (typeof arg === 'number') { - if (typeof encodingOrOffset === 'string') { - throw new TypeError( - 'The "string" argument must be of type string. Received type number' - ) - } - return allocUnsafe(arg) - } - return from(arg, encodingOrOffset, length) -} - -// Fix subarray() in ES2016. See: https://github.com/feross/buffer/pull/97 -if (typeof Symbol !== 'undefined' && Symbol.species != null && - Buffer[Symbol.species] === Buffer) { - Object.defineProperty(Buffer, Symbol.species, { - value: null, - configurable: true, - enumerable: false, - writable: false - }) -} - -Buffer.poolSize = 8192 // not used by this implementation - -function from (value, encodingOrOffset, length) { - if (typeof value === 'string') { - return fromString(value, encodingOrOffset) - } - - if (ArrayBuffer.isView(value)) { - return fromArrayLike(value) - } - - if (value == null) { - throw TypeError( - 'The first argument must be one of type string, Buffer, ArrayBuffer, Array, ' + - 'or Array-like Object. Received type ' + (typeof value) - ) - } +/** + * Retrieve the little endian hash of the transaction including witness data + * @return {Buffer} + */ +Transaction.prototype._getWitnessHash = function() { + return Hash.sha256sha256(this.toBuffer(false)); +}; - if (isInstance(value, ArrayBuffer) || - (value && isInstance(value.buffer, ArrayBuffer))) { - return fromArrayBuffer(value, encodingOrOffset, length) +/** + * Retrieve a hexa string that can be used with bitcoind's CLI interface + * (decoderawtransaction, sendrawtransaction) + * + * @param {Object|boolean=} unsafe if true, skip all tests. if it's an object, + * it's expected to contain a set of flags to skip certain tests: + * * `disableAll`: disable all checks + * * `disableSmallFees`: disable checking for fees that are too small + * * `disableLargeFees`: disable checking for fees that are too large + * * `disableIsFullySigned`: disable checking if all inputs are fully signed + * * `disableDustOutputs`: disable checking if there are no outputs that are dust amounts + * * `disableMoreOutputThanInput`: disable checking if the transaction spends more bitcoins than the sum of the input amounts + * @return {string} + */ +Transaction.prototype.serialize = function(unsafe) { + if (true === unsafe || unsafe && unsafe.disableAll) { + return this.uncheckedSerialize(); + } else { + return this.checkedSerialize(unsafe); } +}; - if (typeof value === 'number') { - throw new TypeError( - 'The "value" argument must not be of type number. Received type number' - ) - } +Transaction.prototype.uncheckedSerialize = Transaction.prototype.toString = function() { + return this.toBuffer().toString('hex'); +}; - var valueOf = value.valueOf && value.valueOf() - if (valueOf != null && valueOf !== value) { - return Buffer.from(valueOf, encodingOrOffset, length) +/** + * Retrieve a hexa string that can be used with bitcoind's CLI interface + * (decoderawtransaction, sendrawtransaction) + * + * @param {Object} opts allows to skip certain tests. {@see Transaction#serialize} + * @return {string} + */ +Transaction.prototype.checkedSerialize = function(opts) { + var serializationError = this.getSerializationError(opts); + if (serializationError) { + serializationError.message += ' - For more information please see: ' + + 'https://bitcore.io/api/lib/transaction#serialization-checks'; + throw serializationError; } + return this.uncheckedSerialize(); +}; - var b = fromObject(value) - if (b) return b - - if (typeof Symbol !== 'undefined' && Symbol.toPrimitive != null && - typeof value[Symbol.toPrimitive] === 'function') { - return Buffer.from( - value[Symbol.toPrimitive]('string'), encodingOrOffset, length - ) +Transaction.prototype.invalidSatoshis = function() { + var invalid = false; + for (var i = 0; i < this.outputs.length; i++) { + if (this.outputs[i].invalidSatoshis()) { + invalid = true; + } } - - throw new TypeError( - 'The first argument must be one of type string, Buffer, ArrayBuffer, Array, ' + - 'or Array-like Object. Received type ' + (typeof value) - ) -} + return invalid; +}; /** - * Functionally equivalent to Buffer(arg, encoding) but throws a TypeError - * if value is a number. - * Buffer.from(str[, encoding]) - * Buffer.from(array) - * Buffer.from(buffer) - * Buffer.from(arrayBuffer[, byteOffset[, length]]) - **/ -Buffer.from = function (value, encodingOrOffset, length) { - return from(value, encodingOrOffset, length) -} - -// Note: Change prototype *after* Buffer.from is defined to workaround Chrome bug: -// https://github.com/feross/buffer/pull/148 -Buffer.prototype.__proto__ = Uint8Array.prototype -Buffer.__proto__ = Uint8Array + * Retrieve a possible error that could appear when trying to serialize and + * broadcast this transaction. + * + * @param {Object} opts allows to skip certain tests. {@see Transaction#serialize} + * @return {bitcore.Error} + */ +Transaction.prototype.getSerializationError = function(opts) { + opts = opts || {}; -function assertSize (size) { - if (typeof size !== 'number') { - throw new TypeError('"size" argument must be of type number') - } else if (size < 0) { - throw new RangeError('The value "' + size + '" is invalid for option "size"') + if (this.invalidSatoshis()) { + return new errors.Transaction.InvalidSatoshis(); } -} -function alloc (size, fill, encoding) { - assertSize(size) - if (size <= 0) { - return createBuffer(size) - } - if (fill !== undefined) { - // Only pay attention to encoding if it's a string. This - // prevents accidentally sending in a number that would - // be interpretted as a start offset. - return typeof encoding === 'string' - ? createBuffer(size).fill(fill, encoding) - : createBuffer(size).fill(fill) + var unspent = this._getUnspentValue(); + var unspentError; + if (unspent < 0) { + if (!opts.disableMoreOutputThanInput) { + unspentError = new errors.Transaction.InvalidOutputAmountSum(); + } + } else { + unspentError = this._hasFeeError(opts, unspent); } - return createBuffer(size) -} - -/** - * Creates a new filled Buffer instance. - * alloc(size[, fill[, encoding]]) - **/ -Buffer.alloc = function (size, fill, encoding) { - return alloc(size, fill, encoding) -} -function allocUnsafe (size) { - assertSize(size) - return createBuffer(size < 0 ? 0 : checked(size) | 0) -} + return unspentError || + this._hasDustOutputs(opts) || + this._isMissingSignatures(opts); +}; -/** - * Equivalent to Buffer(num), by default creates a non-zero-filled Buffer instance. - * */ -Buffer.allocUnsafe = function (size) { - return allocUnsafe(size) -} -/** - * Equivalent to SlowBuffer(num), by default creates a non-zero-filled Buffer instance. - */ -Buffer.allocUnsafeSlow = function (size) { - return allocUnsafe(size) -} +Transaction.prototype._hasFeeError = function(opts, unspent) { -function fromString (string, encoding) { - if (typeof encoding !== 'string' || encoding === '') { - encoding = 'utf8' + if (!_.isUndefined(this._fee) && this._fee !== unspent) { + return new errors.Transaction.FeeError.Different( + 'Unspent value is ' + unspent + ' but specified fee is ' + this._fee + ); } - if (!Buffer.isEncoding(encoding)) { - throw new TypeError('Unknown encoding: ' + encoding) + if (!opts.disableLargeFees) { + var maximumFee = Math.floor(Transaction.FEE_SECURITY_MARGIN * this._estimateFee()); + if (unspent > maximumFee) { + if (this._missingChange()) { + return new errors.Transaction.ChangeAddressMissing( + 'Fee is too large and no change address was provided' + ); + } + return new errors.Transaction.FeeError.TooLarge( + 'expected less than ' + maximumFee + ' but got ' + unspent + ); + } } - var length = byteLength(string, encoding) | 0 - var buf = createBuffer(length) - - var actual = buf.write(string, encoding) - - if (actual !== length) { - // Writing a hex string, for example, that contains invalid characters will - // cause everything after the first invalid character to be ignored. (e.g. - // 'abxxcd' will be treated as 'ab') - buf = buf.slice(0, actual) + if (!opts.disableSmallFees) { + var minimumFee = Math.ceil(this._estimateFee() / Transaction.FEE_SECURITY_MARGIN); + if (unspent < minimumFee) { + return new errors.Transaction.FeeError.TooSmall( + 'expected more than ' + minimumFee + ' but got ' + unspent + ); + } } +}; - return buf -} +Transaction.prototype._missingChange = function() { + return !this._changeScript; +}; -function fromArrayLike (array) { - var length = array.length < 0 ? 0 : checked(array.length) | 0 - var buf = createBuffer(length) - for (var i = 0; i < length; i += 1) { - buf[i] = array[i] & 255 +Transaction.prototype._hasDustOutputs = function(opts) { + if (opts.disableDustOutputs) { + return; } - return buf -} - -function fromArrayBuffer (array, byteOffset, length) { - if (byteOffset < 0 || array.byteLength < byteOffset) { - throw new RangeError('"offset" is outside of buffer bounds') + var index, output; + for (index in this.outputs) { + output = this.outputs[index]; + if (output.satoshis < Transaction.DUST_AMOUNT && !output.script.isDataOut()) { + return new errors.Transaction.DustOutputs(); + } } +}; - if (array.byteLength < byteOffset + (length || 0)) { - throw new RangeError('"length" is outside of buffer bounds') +Transaction.prototype._isMissingSignatures = function(opts) { + if (opts.disableIsFullySigned) { + return; } - - var buf - if (byteOffset === undefined && length === undefined) { - buf = new Uint8Array(array) - } else if (length === undefined) { - buf = new Uint8Array(array, byteOffset) - } else { - buf = new Uint8Array(array, byteOffset, length) + if (!this.isFullySigned()) { + return new errors.Transaction.MissingSignatures(); } +}; - // Return an augmented `Uint8Array` instance - buf.__proto__ = Buffer.prototype - return buf -} +Transaction.prototype.inspect = function() { + return ''; +}; -function fromObject (obj) { - if (Buffer.isBuffer(obj)) { - var len = checked(obj.length) | 0 - var buf = createBuffer(len) +Transaction.prototype.toBuffer = function(noWitness) { + var writer = new BufferWriter(); + return this.toBufferWriter(writer, noWitness).toBuffer(); +}; - if (buf.length === 0) { - return buf +Transaction.prototype.hasWitnesses = function() { + for (var i = 0; i < this.inputs.length; i++) { + if (this.inputs[i].hasWitnesses()) { + return true; } - - obj.copy(buf, 0, 0, len) - return buf } + return false; +}; - if (obj.length !== undefined) { - if (typeof obj.length !== 'number' || numberIsNaN(obj.length)) { - return createBuffer(0) - } - return fromArrayLike(obj) - } +Transaction.prototype.toBufferWriter = function(writer, noWitness) { + writer.writeInt32LE(this.version); - if (obj.type === 'Buffer' && Array.isArray(obj.data)) { - return fromArrayLike(obj.data) - } -} + var hasWitnesses = this.hasWitnesses(); -function checked (length) { - // Note: cannot use `length < K_MAX_LENGTH` here because that fails when - // length is NaN (which is otherwise coerced to zero.) - if (length >= K_MAX_LENGTH) { - throw new RangeError('Attempt to allocate Buffer larger than maximum ' + - 'size: 0x' + K_MAX_LENGTH.toString(16) + ' bytes') + if (hasWitnesses && !noWitness) { + writer.write(new Buffer('0001', 'hex')); } - return length | 0 -} -function SlowBuffer (length) { - if (+length != length) { // eslint-disable-line eqeqeq - length = 0 - } - return Buffer.alloc(+length) -} + writer.writeVarintNum(this.inputs.length); -Buffer.isBuffer = function isBuffer (b) { - return b != null && b._isBuffer === true && - b !== Buffer.prototype // so Buffer.isBuffer(Buffer.prototype) will be false -} + _.each(this.inputs, function(input) { + input.toBufferWriter(writer); + }); -Buffer.compare = function compare (a, b) { - if (isInstance(a, Uint8Array)) a = Buffer.from(a, a.offset, a.byteLength) - if (isInstance(b, Uint8Array)) b = Buffer.from(b, b.offset, b.byteLength) - if (!Buffer.isBuffer(a) || !Buffer.isBuffer(b)) { - throw new TypeError( - 'The "buf1", "buf2" arguments must be one of type Buffer or Uint8Array' - ) - } + writer.writeVarintNum(this.outputs.length); + _.each(this.outputs, function(output) { + output.toBufferWriter(writer); + }); - if (a === b) return 0 + if (hasWitnesses && !noWitness) { + _.each(this.inputs, function(input) { + var witnesses = input.getWitnesses(); + writer.writeVarintNum(witnesses.length); + for (var j = 0; j < witnesses.length; j++) { + writer.writeVarintNum(witnesses[j].length); + writer.write(witnesses[j]); + } + }); + } - var x = a.length - var y = b.length + writer.writeUInt32LE(this.nLockTime); + return writer; +}; - for (var i = 0, len = Math.min(x, y); i < len; ++i) { - if (a[i] !== b[i]) { - x = a[i] - y = b[i] - break - } - } +Transaction.prototype.fromBuffer = function(buffer) { + var reader = new BufferReader(buffer); + return this.fromBufferReader(reader); +}; - if (x < y) return -1 - if (y < x) return 1 - return 0 -} +Transaction.prototype.fromBufferReader = function(reader) { + $.checkArgument(!reader.finished(), 'No transaction data received'); -Buffer.isEncoding = function isEncoding (encoding) { - switch (String(encoding).toLowerCase()) { - case 'hex': - case 'utf8': - case 'utf-8': - case 'ascii': - case 'latin1': - case 'binary': - case 'base64': - case 'ucs2': - case 'ucs-2': - case 'utf16le': - case 'utf-16le': - return true - default: - return false - } -} + this.version = reader.readInt32LE(); + var sizeTxIns = reader.readVarintNum(); -Buffer.concat = function concat (list, length) { - if (!Array.isArray(list)) { - throw new TypeError('"list" argument must be an Array of Buffers') + // check for segwit + var hasWitnesses = false; + if (sizeTxIns === 0 && reader.buf[reader.pos] !== 0) { + reader.pos += 1; + hasWitnesses = true; + sizeTxIns = reader.readVarintNum(); } - if (list.length === 0) { - return Buffer.alloc(0) + for (var i = 0; i < sizeTxIns; i++) { + var input = Input.fromBufferReader(reader); + this.inputs.push(input); } - var i - if (length === undefined) { - length = 0 - for (i = 0; i < list.length; ++i) { - length += list[i].length - } + var sizeTxOuts = reader.readVarintNum(); + for (var j = 0; j < sizeTxOuts; j++) { + this.outputs.push(Output.fromBufferReader(reader)); } - var buffer = Buffer.allocUnsafe(length) - var pos = 0 - for (i = 0; i < list.length; ++i) { - var buf = list[i] - if (isInstance(buf, Uint8Array)) { - buf = Buffer.from(buf) - } - if (!Buffer.isBuffer(buf)) { - throw new TypeError('"list" argument must be an Array of Buffers') + if (hasWitnesses) { + for (var k = 0; k < sizeTxIns; k++) { + var itemCount = reader.readVarintNum(); + var witnesses = []; + for (var l = 0; l < itemCount; l++) { + var size = reader.readVarintNum(); + var item = reader.read(size); + witnesses.push(item); + } + this.inputs[k].setWitnesses(witnesses); } - buf.copy(buffer, pos) - pos += buf.length } - return buffer -} -function byteLength (string, encoding) { - if (Buffer.isBuffer(string)) { - return string.length - } - if (ArrayBuffer.isView(string) || isInstance(string, ArrayBuffer)) { - return string.byteLength - } - if (typeof string !== 'string') { - throw new TypeError( - 'The "string" argument must be one of type string, Buffer, or ArrayBuffer. ' + - 'Received type ' + typeof string - ) - } + this.nLockTime = reader.readUInt32LE(); + return this; +}; - var len = string.length - var mustMatch = (arguments.length > 2 && arguments[2] === true) - if (!mustMatch && len === 0) return 0 - // Use a for loop to avoid recursion - var loweredCase = false - for (;;) { - switch (encoding) { - case 'ascii': - case 'latin1': - case 'binary': - return len - case 'utf8': - case 'utf-8': - return utf8ToBytes(string).length - case 'ucs2': - case 'ucs-2': - case 'utf16le': - case 'utf-16le': - return len * 2 - case 'hex': - return len >>> 1 - case 'base64': - return base64ToBytes(string).length - default: - if (loweredCase) { - return mustMatch ? -1 : utf8ToBytes(string).length // assume utf8 - } - encoding = ('' + encoding).toLowerCase() - loweredCase = true - } +Transaction.prototype.toObject = Transaction.prototype.toJSON = function toObject() { + var inputs = []; + this.inputs.forEach(function(input) { + inputs.push(input.toObject()); + }); + var outputs = []; + this.outputs.forEach(function(output) { + outputs.push(output.toObject()); + }); + var obj = { + hash: this.hash, + version: this.version, + inputs: inputs, + outputs: outputs, + nLockTime: this.nLockTime + }; + if (this._changeScript) { + obj.changeScript = this._changeScript.toString(); } -} -Buffer.byteLength = byteLength - -function slowToString (encoding, start, end) { - var loweredCase = false - - // No need to verify that "this.length <= MAX_UINT32" since it's a read-only - // property of a typed array. - - // This behaves neither like String nor Uint8Array in that we set start/end - // to their upper/lower bounds if the value passed is out of range. - // undefined is handled specially as per ECMA-262 6th Edition, - // Section 13.3.3.7 Runtime Semantics: KeyedBindingInitialization. - if (start === undefined || start < 0) { - start = 0 + if (!_.isUndefined(this._changeIndex)) { + obj.changeIndex = this._changeIndex; } - // Return early if start > this.length. Done here to prevent potential uint32 - // coercion fail below. - if (start > this.length) { - return '' + if (!_.isUndefined(this._fee)) { + obj.fee = this._fee; } + return obj; +}; - if (end === undefined || end > this.length) { - end = this.length +Transaction.prototype.fromObject = function fromObject(arg, opts) { + /* jshint maxstatements: 20 */ + $.checkArgument(_.isObject(arg) || arg instanceof Transaction); + var self = this; + var transaction; + if (arg instanceof Transaction) { + transaction = transaction.toObject(); + } else { + transaction = arg; } - - if (end <= 0) { - return '' + _.each(transaction.inputs, function(input) { + if (!input.output || !input.output.script) { + self.uncheckedAddInput(new Input(input)); + return; + } + var script = new Script(input.output.script); + var txin; + if (script.isPublicKeyHashOut()) { + txin = new Input.PublicKeyHash(input); + } else if (script.isScriptHashOut() && input.publicKeys && input.threshold) { + txin = new Input.MultiSigScriptHash( + input, input.publicKeys, input.threshold, input.signatures, opts + ); + } else if (script.isPublicKeyOut()) { + txin = new Input.PublicKey(input); + } else { + throw new errors.Transaction.Input.UnsupportedScript(input.output.script); + } + self.addInput(txin); + }); + _.each(transaction.outputs, function(output) { + self.addOutput(new Output(output)); + }); + if (transaction.changeIndex) { + this._changeIndex = transaction.changeIndex; } - - // Force coersion to uint32. This will also coerce falsey/NaN values to 0. - end >>>= 0 - start >>>= 0 - - if (end <= start) { - return '' + if (transaction.changeScript) { + this._changeScript = new Script(transaction.changeScript); } + if (transaction.fee) { + this._fee = transaction.fee; + } + this.nLockTime = transaction.nLockTime; + this.version = transaction.version; + this._checkConsistency(arg); + return this; +}; - if (!encoding) encoding = 'utf8' - - while (true) { - switch (encoding) { - case 'hex': - return hexSlice(this, start, end) - - case 'utf8': - case 'utf-8': - return utf8Slice(this, start, end) - - case 'ascii': - return asciiSlice(this, start, end) - - case 'latin1': - case 'binary': - return latin1Slice(this, start, end) - - case 'base64': - return base64Slice(this, start, end) +Transaction.prototype._checkConsistency = function(arg) { + if (!_.isUndefined(this._changeIndex)) { + $.checkState(this._changeScript, 'Change script is expected.'); + $.checkState(this.outputs[this._changeIndex], 'Change index points to undefined output.'); + $.checkState(this.outputs[this._changeIndex].script.toString() === + this._changeScript.toString(), 'Change output has an unexpected script.'); + } + if (arg && arg.hash) { + $.checkState(arg.hash === this.hash, 'Hash in object does not match transaction hash.'); + } +}; - case 'ucs2': - case 'ucs-2': - case 'utf16le': - case 'utf-16le': - return utf16leSlice(this, start, end) +/** + * Sets nLockTime so that transaction is not valid until the desired date(a + * timestamp in seconds since UNIX epoch is also accepted) + * + * @param {Date | Number} time + * @return {Transaction} this + */ +Transaction.prototype.lockUntilDate = function(time) { + $.checkArgument(time); + if (_.isNumber(time) && time < Transaction.NLOCKTIME_BLOCKHEIGHT_LIMIT) { + throw new errors.Transaction.LockTimeTooEarly(); + } + if (_.isDate(time)) { + time = time.getTime() / 1000; + } - default: - if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding) - encoding = (encoding + '').toLowerCase() - loweredCase = true + for (var i = 0; i < this.inputs.length; i++) { + if (this.inputs[i].sequenceNumber === Input.DEFAULT_SEQNUMBER){ + this.inputs[i].sequenceNumber = Input.DEFAULT_LOCKTIME_SEQNUMBER; } } -} - -// This property is used by `Buffer.isBuffer` (and the `is-buffer` npm package) -// to detect a Buffer instance. It's not possible to use `instanceof Buffer` -// reliably in a browserify context because there could be multiple different -// copies of the 'buffer' package in use. This method works even for Buffer -// instances that were created from another copy of the `buffer` package. -// See: https://github.com/feross/buffer/issues/154 -Buffer.prototype._isBuffer = true -function swap (b, n, m) { - var i = b[n] - b[n] = b[m] - b[m] = i -} + this.nLockTime = time; + return this; +}; -Buffer.prototype.swap16 = function swap16 () { - var len = this.length - if (len % 2 !== 0) { - throw new RangeError('Buffer size must be a multiple of 16-bits') +/** + * Sets nLockTime so that transaction is not valid until the desired block + * height. + * + * @param {Number} height + * @return {Transaction} this + */ +Transaction.prototype.lockUntilBlockHeight = function(height) { + $.checkArgument(_.isNumber(height)); + if (height >= Transaction.NLOCKTIME_BLOCKHEIGHT_LIMIT) { + throw new errors.Transaction.BlockHeightTooHigh(); } - for (var i = 0; i < len; i += 2) { - swap(this, i, i + 1) + if (height < 0) { + throw new errors.Transaction.NLockTimeOutOfRange(); } - return this -} -Buffer.prototype.swap32 = function swap32 () { - var len = this.length - if (len % 4 !== 0) { - throw new RangeError('Buffer size must be a multiple of 32-bits') - } - for (var i = 0; i < len; i += 4) { - swap(this, i, i + 3) - swap(this, i + 1, i + 2) + for (var i = 0; i < this.inputs.length; i++) { + if (this.inputs[i].sequenceNumber === Input.DEFAULT_SEQNUMBER){ + this.inputs[i].sequenceNumber = Input.DEFAULT_LOCKTIME_SEQNUMBER; + } } - return this -} -Buffer.prototype.swap64 = function swap64 () { - var len = this.length - if (len % 8 !== 0) { - throw new RangeError('Buffer size must be a multiple of 64-bits') + + this.nLockTime = height; + return this; +}; + +/** + * Returns a semantic version of the transaction's nLockTime. + * @return {Number|Date} + * If nLockTime is 0, it returns null, + * if it is < 500000000, it returns a block height (number) + * else it returns a Date object. + */ +Transaction.prototype.getLockTime = function() { + if (!this.nLockTime) { + return null; } - for (var i = 0; i < len; i += 8) { - swap(this, i, i + 7) - swap(this, i + 1, i + 6) - swap(this, i + 2, i + 5) - swap(this, i + 3, i + 4) + if (this.nLockTime < Transaction.NLOCKTIME_BLOCKHEIGHT_LIMIT) { + return this.nLockTime; } - return this -} - -Buffer.prototype.toString = function toString () { - var length = this.length - if (length === 0) return '' - if (arguments.length === 0) return utf8Slice(this, 0, length) - return slowToString.apply(this, arguments) -} + return new Date(1000 * this.nLockTime); +}; -Buffer.prototype.toLocaleString = Buffer.prototype.toString +Transaction.prototype.fromString = function(string) { + this.fromBuffer(buffer.Buffer.from(string, 'hex')); +}; -Buffer.prototype.equals = function equals (b) { - if (!Buffer.isBuffer(b)) throw new TypeError('Argument must be a Buffer') - if (this === b) return true - return Buffer.compare(this, b) === 0 -} +Transaction.prototype._newTransaction = function() { + this.version = CURRENT_VERSION; + this.nLockTime = DEFAULT_NLOCKTIME; +}; -Buffer.prototype.inspect = function inspect () { - var str = '' - var max = exports.INSPECT_MAX_BYTES - str = this.toString('hex', 0, max).replace(/(.{2})/g, '$1 ').trim() - if (this.length > max) str += ' ... ' - return '' -} +/* Transaction creation interface */ -Buffer.prototype.compare = function compare (target, start, end, thisStart, thisEnd) { - if (isInstance(target, Uint8Array)) { - target = Buffer.from(target, target.offset, target.byteLength) - } - if (!Buffer.isBuffer(target)) { - throw new TypeError( - 'The "target" argument must be one of type Buffer or Uint8Array. ' + - 'Received type ' + (typeof target) - ) - } +/** + * @typedef {Object} Transaction~fromObject + * @property {string} prevTxId + * @property {number} outputIndex + * @property {(Buffer|string|Script)} script + * @property {number} satoshis + */ - if (start === undefined) { - start = 0 - } - if (end === undefined) { - end = target ? target.length : 0 +/** + * Add an input to this transaction. This is a high level interface + * to add an input, for more control, use @{link Transaction#addInput}. + * + * Can receive, as output information, the output of bitcoind's `listunspent` command, + * and a slightly fancier format recognized by bitcore: + * + * ``` + * { + * address: 'mszYqVnqKoQx4jcTdJXxwKAissE3Jbrrc1', + * txId: 'a477af6b2667c29670467e4e0728b685ee07b240235771862318e29ddbe58458', + * outputIndex: 0, + * script: Script.empty(), + * satoshis: 1020000 + * } + * ``` + * Where `address` can be either a string or a bitcore Address object. The + * same is true for `script`, which can be a string or a bitcore Script. + * + * Beware that this resets all the signatures for inputs (in further versions, + * SIGHASH_SINGLE or SIGHASH_NONE signatures will not be reset). + * + * @example + * ```javascript + * var transaction = new Transaction(); + * + * // From a pay to public key hash output from bitcoind's listunspent + * transaction.from({'txid': '0000...', vout: 0, amount: 0.1, scriptPubKey: 'OP_DUP ...'}); + * + * // From a pay to public key hash output + * transaction.from({'txId': '0000...', outputIndex: 0, satoshis: 1000, script: 'OP_DUP ...'}); + * + * // From a multisig P2SH output + * transaction.from({'txId': '0000...', inputIndex: 0, satoshis: 1000, script: '... OP_HASH'}, + * ['03000...', '02000...'], 2); + * ``` + * + * @param {(Array.|Transaction~fromObject)} utxo + * @param {Array=} pubkeys + * @param {number=} threshold + * @param {boolean=} nestedWitness - Indicates that the utxo is nested witness p2sh + * @param {Object=} opts - Several options: + * - noSorting: defaults to false, if true and is multisig, don't + * sort the given public keys before creating the script + */ +Transaction.prototype.from = function(utxo, pubkeys, threshold, nestedWitness, opts) { + if (_.isArray(utxo)) { + var self = this; + _.each(utxo, function(utxo) { + self.from(utxo, pubkeys, threshold); + }); + return this; } - if (thisStart === undefined) { - thisStart = 0 + var exists = _.some(this.inputs, function(input) { + // TODO: Maybe prevTxId should be a string? Or defined as read only property? + return input.prevTxId.toString('hex') === utxo.txId && input.outputIndex === utxo.outputIndex; + }); + if (exists) { + return this; } - if (thisEnd === undefined) { - thisEnd = this.length + if (pubkeys && threshold) { + this._fromMultisigUtxo(utxo, pubkeys, threshold, nestedWitness, opts); + } else { + this._fromNonP2SH(utxo); } + return this; +}; - if (start < 0 || end > target.length || thisStart < 0 || thisEnd > this.length) { - throw new RangeError('out of range index') +Transaction.prototype._fromNonP2SH = function(utxo) { + var clazz; + utxo = new UnspentOutput(utxo); + if (utxo.script.isPublicKeyHashOut()) { + clazz = PublicKeyHashInput; + } else if (utxo.script.isPublicKeyOut()) { + clazz = PublicKeyInput; + } else { + clazz = Input; } + this.addInput(new clazz({ + output: new Output({ + script: utxo.script, + satoshis: utxo.satoshis + }), + prevTxId: utxo.txId, + outputIndex: utxo.outputIndex, + script: Script.empty() + })); +}; - if (thisStart >= thisEnd && start >= end) { - return 0 +Transaction.prototype._fromMultisigUtxo = function(utxo, pubkeys, threshold, nestedWitness, opts) { + $.checkArgument(threshold <= pubkeys.length, + 'Number of required signatures must be greater than the number of public keys'); + var clazz; + utxo = new UnspentOutput(utxo); + if (utxo.script.isMultisigOut()) { + clazz = MultiSigInput; + } else if (utxo.script.isScriptHashOut()) { + clazz = MultiSigScriptHashInput; + } else { + throw new Error("@TODO"); } - if (thisStart >= thisEnd) { - return -1 + this.addInput(new clazz({ + output: new Output({ + script: utxo.script, + satoshis: utxo.satoshis + }), + prevTxId: utxo.txId, + outputIndex: utxo.outputIndex, + script: Script.empty() + }, pubkeys, threshold, false, nestedWitness, opts)); +}; + +/** + * Add an input to this transaction. The input must be an instance of the `Input` class. + * It should have information about the Output that it's spending, but if it's not already + * set, two additional parameters, `outputScript` and `satoshis` can be provided. + * + * @param {Input} input + * @param {String|Script} outputScript + * @param {number} satoshis + * @return Transaction this, for chaining + */ +Transaction.prototype.addInput = function(input, outputScript, satoshis) { + $.checkArgumentType(input, Input, 'input'); + if (!input.output && (_.isUndefined(outputScript) || _.isUndefined(satoshis))) { + throw new errors.Transaction.NeedMoreInfo('Need information about the UTXO script and satoshis'); } - if (start >= end) { - return 1 + if (!input.output && outputScript && !_.isUndefined(satoshis)) { + outputScript = outputScript instanceof Script ? outputScript : new Script(outputScript); + $.checkArgumentType(satoshis, 'number', 'satoshis'); + input.output = new Output({ + script: outputScript, + satoshis: satoshis + }); } + return this.uncheckedAddInput(input); +}; - start >>>= 0 - end >>>= 0 - thisStart >>>= 0 - thisEnd >>>= 0 +/** + * Add an input to this transaction, without checking that the input has information about + * the output that it's spending. + * + * @param {Input} input + * @return Transaction this, for chaining + */ +Transaction.prototype.uncheckedAddInput = function(input) { + $.checkArgumentType(input, Input, 'input'); + this.inputs.push(input); + this._inputAmount = undefined; + this._updateChangeOutput(); + return this; +}; - if (this === target) return 0 +/** + * Returns true if the transaction has enough info on all inputs to be correctly validated + * + * @return {boolean} + */ +Transaction.prototype.hasAllUtxoInfo = function() { + return _.every(this.inputs.map(function(input) { + return !!input.output; + })); +}; - var x = thisEnd - thisStart - var y = end - start - var len = Math.min(x, y) +/** + * Manually set the fee for this transaction. Beware that this resets all the signatures + * for inputs (in further versions, SIGHASH_SINGLE or SIGHASH_NONE signatures will not + * be reset). + * + * @param {number} amount satoshis to be sent + * @return {Transaction} this, for chaining + */ +Transaction.prototype.fee = function(amount) { + $.checkArgument(_.isNumber(amount), 'amount must be a number'); + this._fee = amount; + this._updateChangeOutput(); + return this; +}; - var thisCopy = this.slice(thisStart, thisEnd) - var targetCopy = target.slice(start, end) +/** + * Manually set the fee per KB for this transaction. Beware that this resets all the signatures + * for inputs (in further versions, SIGHASH_SINGLE or SIGHASH_NONE signatures will not + * be reset). + * + * @param {number} amount satoshis per KB to be sent + * @return {Transaction} this, for chaining + */ +Transaction.prototype.feePerKb = function(amount) { + $.checkArgument(_.isNumber(amount), 'amount must be a number'); + this._feePerKb = amount; + this._updateChangeOutput(); + return this; +}; - for (var i = 0; i < len; ++i) { - if (thisCopy[i] !== targetCopy[i]) { - x = thisCopy[i] - y = targetCopy[i] - break - } - } +/** + * Manually set the fee per Byte for this transaction. Beware that this resets all the signatures + * for inputs (in further versions, SIGHASH_SINGLE or SIGHASH_NONE signatures will not + * be reset). + * fee per Byte will be ignored if fee per KB is set + * + * @param {number} amount satoshis per Byte to be sent + * @return {Transaction} this, for chaining + */ +Transaction.prototype.feePerByte = function (amount) { + $.checkArgument(_.isNumber(amount), 'amount must be a number'); + this._feePerByte = amount; + this._updateChangeOutput(); + return this; +}; - if (x < y) return -1 - if (y < x) return 1 - return 0 -} +/* Output management */ -// Finds either the first index of `val` in `buffer` at offset >= `byteOffset`, -// OR the last index of `val` in `buffer` at offset <= `byteOffset`. -// -// Arguments: -// - buffer - a Buffer to search -// - val - a string, Buffer, or number -// - byteOffset - an index into `buffer`; will be clamped to an int32 -// - encoding - an optional encoding, relevant is val is a string -// - dir - true for indexOf, false for lastIndexOf -function bidirectionalIndexOf (buffer, val, byteOffset, encoding, dir) { - // Empty buffer means no match - if (buffer.length === 0) return -1 +/** + * Set the change address for this transaction + * + * Beware that this resets all the signatures for inputs (in further versions, + * SIGHASH_SINGLE or SIGHASH_NONE signatures will not be reset). + * + * @param {Address} address An address for change to be sent to. + * @return {Transaction} this, for chaining + */ +Transaction.prototype.change = function(address) { + $.checkArgument(address, 'address is required'); + this._changeScript = Script.fromAddress(address); + this._updateChangeOutput(); + return this; +}; - // Normalize byteOffset - if (typeof byteOffset === 'string') { - encoding = byteOffset - byteOffset = 0 - } else if (byteOffset > 0x7fffffff) { - byteOffset = 0x7fffffff - } else if (byteOffset < -0x80000000) { - byteOffset = -0x80000000 - } - byteOffset = +byteOffset // Coerce to Number. - if (numberIsNaN(byteOffset)) { - // byteOffset: it it's undefined, null, NaN, "foo", etc, search whole buffer - byteOffset = dir ? 0 : (buffer.length - 1) - } - // Normalize byteOffset: negative offsets start from the end of the buffer - if (byteOffset < 0) byteOffset = buffer.length + byteOffset - if (byteOffset >= buffer.length) { - if (dir) return -1 - else byteOffset = buffer.length - 1 - } else if (byteOffset < 0) { - if (dir) byteOffset = 0 - else return -1 +/** + * @return {Output} change output, if it exists + */ +Transaction.prototype.getChangeOutput = function() { + if (!_.isUndefined(this._changeIndex)) { + return this.outputs[this._changeIndex]; } + return null; +}; - // Normalize val - if (typeof val === 'string') { - val = Buffer.from(val, encoding) - } +/** + * @typedef {Object} Transaction~toObject + * @property {(string|Address)} address + * @property {number} satoshis + */ - // Finally, search either indexOf (if dir is true) or lastIndexOf - if (Buffer.isBuffer(val)) { - // Special case: looking for empty string/buffer always fails - if (val.length === 0) { - return -1 - } - return arrayIndexOf(buffer, val, byteOffset, encoding, dir) - } else if (typeof val === 'number') { - val = val & 0xFF // Search for a byte value [0-255] - if (typeof Uint8Array.prototype.indexOf === 'function') { - if (dir) { - return Uint8Array.prototype.indexOf.call(buffer, val, byteOffset) - } else { - return Uint8Array.prototype.lastIndexOf.call(buffer, val, byteOffset) - } - } - return arrayIndexOf(buffer, [ val ], byteOffset, encoding, dir) +/** + * Add an output to the transaction. + * + * Beware that this resets all the signatures for inputs (in further versions, + * SIGHASH_SINGLE or SIGHASH_NONE signatures will not be reset). + * + * @param {(string|Address|Array.)} address + * @param {number} amount in satoshis + * @return {Transaction} this, for chaining + */ +Transaction.prototype.to = function(address, amount) { + if (_.isArray(address)) { + var self = this; + _.each(address, function(to) { + self.to(to.address, to.satoshis); + }); + return this; } - throw new TypeError('val must be string, number or Buffer') -} + $.checkArgument( + JSUtil.isNaturalNumber(amount), + 'Amount is expected to be a positive integer' + ); + this.addOutput(new Output({ + script: Script(new Address(address)), + satoshis: amount + })); + return this; +}; -function arrayIndexOf (arr, val, byteOffset, encoding, dir) { - var indexSize = 1 - var arrLength = arr.length - var valLength = val.length +/** + * Add an OP_RETURN output to the transaction. + * + * Beware that this resets all the signatures for inputs (in further versions, + * SIGHASH_SINGLE or SIGHASH_NONE signatures will not be reset). + * + * @param {Buffer|string} value the data to be stored in the OP_RETURN output. + * In case of a string, the UTF-8 representation will be stored + * @return {Transaction} this, for chaining + */ +Transaction.prototype.addData = function(value) { + this.addOutput(new Output({ + script: Script.buildDataOut(value), + satoshis: 0 + })); + return this; +}; - if (encoding !== undefined) { - encoding = String(encoding).toLowerCase() - if (encoding === 'ucs2' || encoding === 'ucs-2' || - encoding === 'utf16le' || encoding === 'utf-16le') { - if (arr.length < 2 || val.length < 2) { - return -1 - } - indexSize = 2 - arrLength /= 2 - valLength /= 2 - byteOffset /= 2 - } - } - function read (buf, i) { - if (indexSize === 1) { - return buf[i] - } else { - return buf.readUInt16BE(i * indexSize) - } - } +/** + * Add an output to the transaction. + * + * @param {Output} output the output to add. + * @return {Transaction} this, for chaining + */ +Transaction.prototype.addOutput = function(output) { + $.checkArgumentType(output, Output, 'output'); + this._addOutput(output); + this._updateChangeOutput(); + return this; +}; - var i - if (dir) { - var foundIndex = -1 - for (i = byteOffset; i < arrLength; i++) { - if (read(arr, i) === read(val, foundIndex === -1 ? 0 : i - foundIndex)) { - if (foundIndex === -1) foundIndex = i - if (i - foundIndex + 1 === valLength) return foundIndex * indexSize - } else { - if (foundIndex !== -1) i -= i - foundIndex - foundIndex = -1 - } - } - } else { - if (byteOffset + valLength > arrLength) byteOffset = arrLength - valLength - for (i = byteOffset; i >= 0; i--) { - var found = true - for (var j = 0; j < valLength; j++) { - if (read(arr, i + j) !== read(val, j)) { - found = false - break - } - } - if (found) return i - } - } - return -1 -} +/** + * Remove all outputs from the transaction. + * + * @return {Transaction} this, for chaining + */ +Transaction.prototype.clearOutputs = function() { + this.outputs = []; + this._clearSignatures(); + this._outputAmount = undefined; + this._changeIndex = undefined; + this._updateChangeOutput(); + return this; +}; -Buffer.prototype.includes = function includes (val, byteOffset, encoding) { - return this.indexOf(val, byteOffset, encoding) !== -1 -} -Buffer.prototype.indexOf = function indexOf (val, byteOffset, encoding) { - return bidirectionalIndexOf(this, val, byteOffset, encoding, true) -} +Transaction.prototype._addOutput = function(output) { + this.outputs.push(output); + this._outputAmount = undefined; +}; -Buffer.prototype.lastIndexOf = function lastIndexOf (val, byteOffset, encoding) { - return bidirectionalIndexOf(this, val, byteOffset, encoding, false) -} -function hexWrite (buf, string, offset, length) { - offset = Number(offset) || 0 - var remaining = buf.length - offset - if (!length) { - length = remaining - } else { - length = Number(length) - if (length > remaining) { - length = remaining - } +/** + * Calculates or gets the total output amount in satoshis + * + * @return {Number} the transaction total output amount + */ +Transaction.prototype._getOutputAmount = function() { + if (_.isUndefined(this._outputAmount)) { + var self = this; + this._outputAmount = 0; + _.each(this.outputs, function(output) { + self._outputAmount += output.satoshis; + }); } + return this._outputAmount; +}; - var strLen = string.length - if (length > strLen / 2) { - length = strLen / 2 - } - for (var i = 0; i < length; ++i) { - var parsed = parseInt(string.substr(i * 2, 2), 16) - if (numberIsNaN(parsed)) return i - buf[offset + i] = parsed +/** + * Calculates or gets the total input amount in satoshis + * + * @return {Number} the transaction total input amount + */ +Transaction.prototype._getInputAmount = function() { + if (_.isUndefined(this._inputAmount)) { + this._inputAmount = _.sumBy(this.inputs, function(input) { + if (_.isUndefined(input.output)) { + throw new errors.Transaction.Input.MissingPreviousOutput(); + } + return input.output.satoshis; + }); } - return i -} - -function utf8Write (buf, string, offset, length) { - return blitBuffer(utf8ToBytes(string, buf.length - offset), buf, offset, length) -} - -function asciiWrite (buf, string, offset, length) { - return blitBuffer(asciiToBytes(string), buf, offset, length) -} - -function latin1Write (buf, string, offset, length) { - return asciiWrite(buf, string, offset, length) -} - -function base64Write (buf, string, offset, length) { - return blitBuffer(base64ToBytes(string), buf, offset, length) -} - -function ucs2Write (buf, string, offset, length) { - return blitBuffer(utf16leToBytes(string, buf.length - offset), buf, offset, length) -} + return this._inputAmount; +}; -Buffer.prototype.write = function write (string, offset, length, encoding) { - // Buffer#write(string) - if (offset === undefined) { - encoding = 'utf8' - length = this.length - offset = 0 - // Buffer#write(string, encoding) - } else if (length === undefined && typeof offset === 'string') { - encoding = offset - length = this.length - offset = 0 - // Buffer#write(string, offset[, length][, encoding]) - } else if (isFinite(offset)) { - offset = offset >>> 0 - if (isFinite(length)) { - length = length >>> 0 - if (encoding === undefined) encoding = 'utf8' - } else { - encoding = length - length = undefined - } +Transaction.prototype._updateChangeOutput = function() { + if (!this._changeScript) { + return; + } + this._clearSignatures(); + if (!_.isUndefined(this._changeIndex)) { + this._removeOutput(this._changeIndex); + } + var available = this._getUnspentValue(); + var fee = this.getFee(); + var changeAmount = available - fee; + if (changeAmount > 0) { + this._changeIndex = this.outputs.length; + this._addOutput(new Output({ + script: this._changeScript, + satoshis: changeAmount + })); } else { - throw new Error( - 'Buffer.write(string, encoding, offset[, length]) is no longer supported' - ) + this._changeIndex = undefined; } +}; +/** + * Calculates the fee of the transaction. + * + * If there's a fixed fee set, return that. + * + * If there is no change output set, the fee is the + * total value of the outputs minus inputs. Note that + * a serialized transaction only specifies the value + * of its outputs. (The value of inputs are recorded + * in the previous transaction outputs being spent.) + * This method therefore raises a "MissingPreviousOutput" + * error when called on a serialized transaction. + * + * If there's no fee set and no change address, + * estimate the fee based on size. + * + * @return {Number} fee of this transaction in satoshis + */ +Transaction.prototype.getFee = function() { + if (this.isCoinbase()) { + return 0; + } + if (!_.isUndefined(this._fee)) { + return this._fee; + } + // if no change output is set, fees should equal all the unspent amount + if (!this._changeScript) { + return this._getUnspentValue(); + } + return this._estimateFee(); +}; - var remaining = this.length - offset - if (length === undefined || length > remaining) length = remaining - - if ((string.length > 0 && (length < 0 || offset < 0)) || offset > this.length) { - throw new RangeError('Attempt to write outside buffer bounds') +/** + * Estimates fee from serialized transaction size in bytes. + */ +Transaction.prototype._estimateFee = function () { + var estimatedSize = this._estimateSize(); + var available = this._getUnspentValue(); + var feeRate = this._feePerByte || (this._feePerKb || Transaction.FEE_PER_KB) / 1000; + function getFee(size) { + return size * feeRate; + } + var fee = Math.ceil(getFee(estimatedSize)); + var feeWithChange = Math.ceil(getFee(estimatedSize) + getFee(Transaction.CHANGE_OUTPUT_MAX_SIZE)); + if (!this._changeScript || available <= feeWithChange) { + return fee; } + return feeWithChange; +}; - if (!encoding) encoding = 'utf8' +Transaction.prototype._getUnspentValue = function() { + return this._getInputAmount() - this._getOutputAmount(); +}; - var loweredCase = false - for (;;) { - switch (encoding) { - case 'hex': - return hexWrite(this, string, offset, length) +Transaction.prototype._clearSignatures = function() { + _.each(this.inputs, function(input) { + input.clearSignatures(); + }); +}; - case 'utf8': - case 'utf-8': - return utf8Write(this, string, offset, length) +Transaction.prototype._estimateSize = function() { + var result = Transaction.MAXIMUM_EXTRA_SIZE; + _.each(this.inputs, function(input) { + result += input._estimateSize(); + }); + _.each(this.outputs, function(output) { + result += output.script.toBuffer().length + 9; + }); + return result; +}; - case 'ascii': - return asciiWrite(this, string, offset, length) +Transaction.prototype._removeOutput = function(index) { + var output = this.outputs[index]; + this.outputs = _.without(this.outputs, output); + this._outputAmount = undefined; +}; - case 'latin1': - case 'binary': - return latin1Write(this, string, offset, length) +Transaction.prototype.removeOutput = function(index) { + this._removeOutput(index); + this._updateChangeOutput(); +}; - case 'base64': - // Warning: maxLength not taken into account in base64Write - return base64Write(this, string, offset, length) +/** + * Sort a transaction's inputs and outputs according to BIP69 + * + * @see {https://github.com/bitcoin/bips/blob/master/bip-0069.mediawiki} + * @return {Transaction} this + */ +Transaction.prototype.sort = function() { + this.sortInputs(function(inputs) { + var copy = Array.prototype.concat.apply([], inputs); + copy.sort(function(first, second) { + return compare(first.prevTxId, second.prevTxId) + || first.outputIndex - second.outputIndex; + }); + return copy; + }); + this.sortOutputs(function(outputs) { + var copy = Array.prototype.concat.apply([], outputs); + copy.sort(function(first, second) { + return first.satoshis - second.satoshis + || compare(first.script.toBuffer(), second.script.toBuffer()); + }); + return copy; + }); + return this; +}; - case 'ucs2': - case 'ucs-2': - case 'utf16le': - case 'utf-16le': - return ucs2Write(this, string, offset, length) +/** + * Randomize this transaction's outputs ordering. The shuffling algorithm is a + * version of the Fisher-Yates shuffle, provided by lodash's _.shuffle(). + * + * @return {Transaction} this + */ +Transaction.prototype.shuffleOutputs = function() { + return this.sortOutputs(_.shuffle); +}; - default: - if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding) - encoding = ('' + encoding).toLowerCase() - loweredCase = true - } - } -} +/** + * Sort this transaction's outputs, according to a given sorting function that + * takes an array as argument and returns a new array, with the same elements + * but with a different order. The argument function MUST NOT modify the order + * of the original array + * + * @param {Function} sortingFunction + * @return {Transaction} this + */ +Transaction.prototype.sortOutputs = function(sortingFunction) { + var outs = sortingFunction(this.outputs); + return this._newOutputOrder(outs); +}; -Buffer.prototype.toJSON = function toJSON () { - return { - type: 'Buffer', - data: Array.prototype.slice.call(this._arr || this, 0) +/** + * Sort this transaction's inputs, according to a given sorting function that + * takes an array as argument and returns a new array, with the same elements + * but with a different order. + * + * @param {Function} sortingFunction + * @return {Transaction} this + */ +Transaction.prototype.sortInputs = function(sortingFunction) { + this.inputs = sortingFunction(this.inputs); + this._clearSignatures(); + return this; +}; + +Transaction.prototype._newOutputOrder = function(newOutputs) { + var isInvalidSorting = (this.outputs.length !== newOutputs.length || + _.difference(this.outputs, newOutputs).length !== 0); + if (isInvalidSorting) { + throw new errors.Transaction.InvalidSorting(); } -} -function base64Slice (buf, start, end) { - if (start === 0 && end === buf.length) { - return base64.fromByteArray(buf) + if (!_.isUndefined(this._changeIndex)) { + var changeOutput = this.outputs[this._changeIndex]; + this._changeIndex = _.findIndex(newOutputs, changeOutput); + } + + this.outputs = newOutputs; + return this; +}; + +Transaction.prototype.removeInput = function(txId, outputIndex) { + var index; + if (!outputIndex && _.isNumber(txId)) { + index = txId; } else { - return base64.fromByteArray(buf.slice(start, end)) + index = _.findIndex(this.inputs, function(input) { + return input.prevTxId.toString('hex') === txId && input.outputIndex === outputIndex; + }); } -} + if (index < 0 || index >= this.inputs.length) { + throw new errors.Transaction.InvalidIndex(index, this.inputs.length); + } + var input = this.inputs[index]; + this.inputs = _.without(this.inputs, input); + this._inputAmount = undefined; + this._updateChangeOutput(); +}; -function utf8Slice (buf, start, end) { - end = Math.min(buf.length, end) - var res = [] +/* Signature handling */ - var i = start - while (i < end) { - var firstByte = buf[i] - var codePoint = null - var bytesPerSequence = (firstByte > 0xEF) ? 4 - : (firstByte > 0xDF) ? 3 - : (firstByte > 0xBF) ? 2 - : 1 +/** + * Sign the transaction using one or more private keys. + * + * It tries to sign each input, verifying that the signature will be valid + * (matches a public key). + * + * @param {Array|String|PrivateKey} privateKey + * @param {number} sigtype + * @return {Transaction} this, for chaining + */ +Transaction.prototype.sign = function(privateKey, sigtype) { + $.checkState(this.hasAllUtxoInfo(), 'Not all utxo information is available to sign the transaction.'); + var self = this; + if (_.isArray(privateKey)) { + _.each(privateKey, function(privateKey) { + self.sign(privateKey, sigtype); + }); + return this; + } + _.each(this.getSignatures(privateKey, sigtype), function(signature) { + self.applySignature(signature); + }); + return this; +}; - if (i + bytesPerSequence <= end) { - var secondByte, thirdByte, fourthByte, tempCodePoint +Transaction.prototype.getSignatures = function(privKey, sigtype) { + privKey = new PrivateKey(privKey); + sigtype = sigtype || Signature.SIGHASH_ALL; + var transaction = this; + var results = []; + var hashData = Hash.sha256ripemd160(privKey.publicKey.toBuffer()); + _.each(this.inputs, function forEachInput(input, index) { + _.each(input.getSignatures(transaction, privKey, index, sigtype, hashData), function(signature) { + results.push(signature); + }); + }); + return results; +}; - switch (bytesPerSequence) { - case 1: - if (firstByte < 0x80) { - codePoint = firstByte - } - break - case 2: - secondByte = buf[i + 1] - if ((secondByte & 0xC0) === 0x80) { - tempCodePoint = (firstByte & 0x1F) << 0x6 | (secondByte & 0x3F) - if (tempCodePoint > 0x7F) { - codePoint = tempCodePoint - } - } - break - case 3: - secondByte = buf[i + 1] - thirdByte = buf[i + 2] - if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80) { - tempCodePoint = (firstByte & 0xF) << 0xC | (secondByte & 0x3F) << 0x6 | (thirdByte & 0x3F) - if (tempCodePoint > 0x7FF && (tempCodePoint < 0xD800 || tempCodePoint > 0xDFFF)) { - codePoint = tempCodePoint - } - } - break - case 4: - secondByte = buf[i + 1] - thirdByte = buf[i + 2] - fourthByte = buf[i + 3] - if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80 && (fourthByte & 0xC0) === 0x80) { - tempCodePoint = (firstByte & 0xF) << 0x12 | (secondByte & 0x3F) << 0xC | (thirdByte & 0x3F) << 0x6 | (fourthByte & 0x3F) - if (tempCodePoint > 0xFFFF && tempCodePoint < 0x110000) { - codePoint = tempCodePoint - } - } - } - } +/** + * Add a signature to the transaction + * + * @param {Object} signature + * @param {number} signature.inputIndex + * @param {number} signature.sigtype + * @param {PublicKey} signature.publicKey + * @param {Signature} signature.signature + * @return {Transaction} this, for chaining + */ +Transaction.prototype.applySignature = function(signature) { + this.inputs[signature.inputIndex].addSignature(this, signature); + return this; +}; - if (codePoint === null) { - // we did not generate a valid codePoint so insert a - // replacement char (U+FFFD) and advance only 1 byte - codePoint = 0xFFFD - bytesPerSequence = 1 - } else if (codePoint > 0xFFFF) { - // encode to utf16 (surrogate pair dance) - codePoint -= 0x10000 - res.push(codePoint >>> 10 & 0x3FF | 0xD800) - codePoint = 0xDC00 | codePoint & 0x3FF +Transaction.prototype.isFullySigned = function() { + _.each(this.inputs, function(input) { + if (input.isFullySigned === Input.prototype.isFullySigned) { + throw new errors.Transaction.UnableToVerifySignature( + 'Unrecognized script kind, or not enough information to execute script.' + + 'This usually happens when creating a transaction from a serialized transaction' + ); } + }); + return _.every(_.map(this.inputs, function(input) { + return input.isFullySigned(); + })); +}; - res.push(codePoint) - i += bytesPerSequence +Transaction.prototype.isValidSignature = function(signature) { + var self = this; + if (this.inputs[signature.inputIndex].isValidSignature === Input.prototype.isValidSignature) { + throw new errors.Transaction.UnableToVerifySignature( + 'Unrecognized script kind, or not enough information to execute script.' + + 'This usually happens when creating a transaction from a serialized transaction' + ); } + return this.inputs[signature.inputIndex].isValidSignature(self, signature); +}; - return decodeCodePointsArray(res) -} - -// Based on http://stackoverflow.com/a/22747272/680742, the browser with -// the lowest limit is Chrome, with 0x10000 args. -// We go 1 magnitude less, for safety -var MAX_ARGUMENTS_LENGTH = 0x1000 - -function decodeCodePointsArray (codePoints) { - var len = codePoints.length - if (len <= MAX_ARGUMENTS_LENGTH) { - return String.fromCharCode.apply(String, codePoints) // avoid extra slice() - } +/** + * @returns {bool} whether the signature is valid for this transaction input + */ +Transaction.prototype.verifySignature = function(sig, pubkey, nin, subscript, sigversion, satoshis) { - // Decode in chunks to avoid "call stack size exceeded". - var res = '' - var i = 0 - while (i < len) { - res += String.fromCharCode.apply( - String, - codePoints.slice(i, i += MAX_ARGUMENTS_LENGTH) - ) + if (_.isUndefined(sigversion)) { + sigversion = 0; } - return res -} -function asciiSlice (buf, start, end) { - var ret = '' - end = Math.min(buf.length, end) + if (sigversion === 1) { + var subscriptBuffer = subscript.toBuffer(); + var scriptCodeWriter = new BufferWriter(); + scriptCodeWriter.writeVarintNum(subscriptBuffer.length); + scriptCodeWriter.write(subscriptBuffer); - for (var i = start; i < end; ++i) { - ret += String.fromCharCode(buf[i] & 0x7F) + var satoshisBuffer; + if (satoshis) { + $.checkState(JSUtil.isNaturalNumber(satoshis)); + satoshisBuffer = new BufferWriter().writeUInt64LEBN(new BN(satoshis)).toBuffer(); + } else { + satoshisBuffer = this.inputs[nin].getSatoshisBuffer(); + } + var verified = SighashWitness.verify( + this, + sig, + pubkey, + nin, + scriptCodeWriter.toBuffer(), + satoshisBuffer + ); + return verified; } - return ret -} -function latin1Slice (buf, start, end) { - var ret = '' - end = Math.min(buf.length, end) + return Sighash.verify(this, sig, pubkey, nin, subscript); +}; - for (var i = start; i < end; ++i) { - ret += String.fromCharCode(buf[i]) +/** + * Check that a transaction passes basic sanity tests. If not, return a string + * describing the error. This function contains the same logic as + * CheckTransaction in bitcoin core. + */ +Transaction.prototype.verify = function() { + // Basic checks that don't depend on any context + if (this.inputs.length === 0) { + return 'transaction txins empty'; } - return ret -} -function hexSlice (buf, start, end) { - var len = buf.length + if (this.outputs.length === 0) { + return 'transaction txouts empty'; + } - if (!start || start < 0) start = 0 - if (!end || end < 0 || end > len) end = len + // Check for negative or overflow output values + var valueoutbn = new BN(0); + for (var i = 0; i < this.outputs.length; i++) { + var txout = this.outputs[i]; - var out = '' - for (var i = start; i < end; ++i) { - out += toHex(buf[i]) + if (txout.invalidSatoshis()) { + return 'transaction txout ' + i + ' satoshis is invalid'; + } + if (txout._satoshisBN.gt(new BN(Transaction.MAX_MONEY, 10))) { + return 'transaction txout ' + i + ' greater than MAX_MONEY'; + } + valueoutbn = valueoutbn.add(txout._satoshisBN); + if (valueoutbn.gt(new BN(Transaction.MAX_MONEY))) { + return 'transaction txout ' + i + ' total output greater than MAX_MONEY'; + } } - return out -} -function utf16leSlice (buf, start, end) { - var bytes = buf.slice(start, end) - var res = '' - for (var i = 0; i < bytes.length; i += 2) { - res += String.fromCharCode(bytes[i] + (bytes[i + 1] * 256)) + // Size limits + if (this.toBuffer().length > MAX_BLOCK_SIZE) { + return 'transaction over the maximum block size'; } - return res -} -Buffer.prototype.slice = function slice (start, end) { - var len = this.length - start = ~~start - end = end === undefined ? len : ~~end + // Check for duplicate inputs + var txinmap = {}; + for (i = 0; i < this.inputs.length; i++) { + var txin = this.inputs[i]; - if (start < 0) { - start += len - if (start < 0) start = 0 - } else if (start > len) { - start = len + var inputid = txin.prevTxId + ':' + txin.outputIndex; + if (!_.isUndefined(txinmap[inputid])) { + return 'transaction input ' + i + ' duplicate input'; + } + txinmap[inputid] = true; } - if (end < 0) { - end += len - if (end < 0) end = 0 - } else if (end > len) { - end = len + var isCoinbase = this.isCoinbase(); + if (isCoinbase) { + var buf = this.inputs[0]._scriptBuffer; + if (buf.length < 2 || buf.length > 100) { + return 'coinbase transaction script size invalid'; + } + } else { + for (i = 0; i < this.inputs.length; i++) { + if (this.inputs[i].isNull()) { + return 'transaction input ' + i + ' has null input'; + } + } } + return true; +}; - if (end < start) end = start - - var newBuf = this.subarray(start, end) - // Return an augmented `Uint8Array` instance - newBuf.__proto__ = Buffer.prototype - return newBuf -} - -/* - * Need to make sure that buffer isn't trying to write out of bounds. +/** + * Analogous to bitcoind's IsCoinBase function in transaction.h */ -function checkOffset (offset, ext, length) { - if ((offset % 1) !== 0 || offset < 0) throw new RangeError('offset is not uint') - if (offset + ext > length) throw new RangeError('Trying to access beyond buffer length') -} - -Buffer.prototype.readUIntLE = function readUIntLE (offset, byteLength, noAssert) { - offset = offset >>> 0 - byteLength = byteLength >>> 0 - if (!noAssert) checkOffset(offset, byteLength, this.length) +Transaction.prototype.isCoinbase = function() { + return (this.inputs.length === 1 && this.inputs[0].isNull()); +}; - var val = this[offset] - var mul = 1 - var i = 0 - while (++i < byteLength && (mul *= 0x100)) { - val += this[offset + i] * mul +/** + * Determines if this transaction can be replaced in the mempool with another + * transaction that provides a sufficiently higher fee (RBF). + */ +Transaction.prototype.isRBF = function() { + for (var i = 0; i < this.inputs.length; i++) { + var input = this.inputs[i]; + if (input.sequenceNumber < Input.MAXINT - 1) { + return true; + } } + return false; +}; - return val -} - -Buffer.prototype.readUIntBE = function readUIntBE (offset, byteLength, noAssert) { - offset = offset >>> 0 - byteLength = byteLength >>> 0 - if (!noAssert) { - checkOffset(offset, byteLength, this.length) +/** + * Enable this transaction to be replaced in the mempool (RBF) if a transaction + * includes a sufficiently higher fee. It will set the sequenceNumber to + * DEFAULT_RBF_SEQNUMBER for all inputs if the sequence number does not + * already enable RBF. + */ +Transaction.prototype.enableRBF = function() { + for (var i = 0; i < this.inputs.length; i++) { + var input = this.inputs[i]; + if (input.sequenceNumber >= Input.MAXINT - 1) { + input.sequenceNumber = Input.DEFAULT_RBF_SEQNUMBER; + } } + return this; +}; - var val = this[offset + --byteLength] - var mul = 1 - while (byteLength > 0 && (mul *= 0x100)) { - val += this[offset + --byteLength] * mul - } +module.exports = Transaction; - return val -} +}).call(this,require("buffer").Buffer) +},{"../address":1,"../crypto/bn":6,"../crypto/hash":8,"../crypto/signature":11,"../encoding/bufferreader":14,"../encoding/bufferwriter":15,"../errors":17,"../privatekey":24,"../script":26,"../util/buffer":44,"../util/js":45,"../util/preconditions":46,"./input":30,"./output":36,"./sighash":37,"./sighashwitness":38,"./unspentoutput":41,"buffer":100,"buffer-compare":98,"lodash":156}],41:[function(require,module,exports){ +'use strict'; -Buffer.prototype.readUInt8 = function readUInt8 (offset, noAssert) { - offset = offset >>> 0 - if (!noAssert) checkOffset(offset, 1, this.length) - return this[offset] -} +var _ = require('lodash'); +var $ = require('../util/preconditions'); +var JSUtil = require('../util/js'); -Buffer.prototype.readUInt16LE = function readUInt16LE (offset, noAssert) { - offset = offset >>> 0 - if (!noAssert) checkOffset(offset, 2, this.length) - return this[offset] | (this[offset + 1] << 8) -} +var Script = require('../script'); +var Address = require('../address'); +var Unit = require('../unit'); -Buffer.prototype.readUInt16BE = function readUInt16BE (offset, noAssert) { - offset = offset >>> 0 - if (!noAssert) checkOffset(offset, 2, this.length) - return (this[offset] << 8) | this[offset + 1] +/** + * Represents an unspent output information: its script, associated amount and address, + * transaction id and output index. + * + * @constructor + * @param {object} data + * @param {string} data.txid the previous transaction id + * @param {string=} data.txId alias for `txid` + * @param {number} data.vout the index in the transaction + * @param {number=} data.outputIndex alias for `vout` + * @param {string|Script} data.scriptPubKey the script that must be resolved to release the funds + * @param {string|Script=} data.script alias for `scriptPubKey` + * @param {number} data.amount amount of bitcoins associated + * @param {number=} data.satoshis alias for `amount`, but expressed in satoshis (1 BTC = 1e8 satoshis) + * @param {string|Address=} data.address the associated address to the script, if provided + */ +function UnspentOutput(data) { + /* jshint maxcomplexity: 20 */ + /* jshint maxstatements: 20 */ + if (!(this instanceof UnspentOutput)) { + return new UnspentOutput(data); + } + $.checkArgument(_.isObject(data), 'Must provide an object from where to extract data'); + var address = data.address ? new Address(data.address) : undefined; + var txId = data.txid ? data.txid : data.txId; + if (!txId || !JSUtil.isHexaString(txId) || txId.length > 64) { + // TODO: Use the errors library + throw new Error('Invalid TXID in object', data); + } + var outputIndex = _.isUndefined(data.vout) ? data.outputIndex : data.vout; + if (!_.isNumber(outputIndex)) { + throw new Error('Invalid outputIndex, received ' + outputIndex); + } + $.checkArgument(!_.isUndefined(data.scriptPubKey) || !_.isUndefined(data.script), + 'Must provide the scriptPubKey for that output!'); + var script = new Script(data.scriptPubKey || data.script); + $.checkArgument(!_.isUndefined(data.amount) || !_.isUndefined(data.satoshis), + 'Must provide an amount for the output'); + var amount = !_.isUndefined(data.amount) ? new Unit.fromBTC(data.amount).toSatoshis() : data.satoshis; + $.checkArgument(_.isNumber(amount), 'Amount must be a number'); + JSUtil.defineImmutable(this, { + address: address, + txId: txId, + outputIndex: outputIndex, + script: script, + satoshis: amount + }); } -Buffer.prototype.readUInt32LE = function readUInt32LE (offset, noAssert) { - offset = offset >>> 0 - if (!noAssert) checkOffset(offset, 4, this.length) +/** + * Provide an informative output when displaying this object in the console + * @returns string + */ +UnspentOutput.prototype.inspect = function() { + return ''; +}; - return ((this[offset]) | - (this[offset + 1] << 8) | - (this[offset + 2] << 16)) + - (this[offset + 3] * 0x1000000) -} +/** + * String representation: just "txid:index" + * @returns string + */ +UnspentOutput.prototype.toString = function() { + return this.txId + ':' + this.outputIndex; +}; -Buffer.prototype.readUInt32BE = function readUInt32BE (offset, noAssert) { - offset = offset >>> 0 - if (!noAssert) checkOffset(offset, 4, this.length) +/** + * Deserialize an UnspentOutput from an object + * @param {object|string} data + * @return UnspentOutput + */ +UnspentOutput.fromObject = function(data) { + return new UnspentOutput(data); +}; - return (this[offset] * 0x1000000) + - ((this[offset + 1] << 16) | - (this[offset + 2] << 8) | - this[offset + 3]) -} +/** + * Returns a plain object (no prototype or methods) with the associated info for this output + * @return {object} + */ +UnspentOutput.prototype.toObject = UnspentOutput.prototype.toJSON = function toObject() { + return { + address: this.address ? this.address.toString() : undefined, + txid: this.txId, + vout: this.outputIndex, + scriptPubKey: this.script.toBuffer().toString('hex'), + amount: Unit.fromSatoshis(this.satoshis).toBTC() + }; +}; -Buffer.prototype.readIntLE = function readIntLE (offset, byteLength, noAssert) { - offset = offset >>> 0 - byteLength = byteLength >>> 0 - if (!noAssert) checkOffset(offset, byteLength, this.length) +module.exports = UnspentOutput; - var val = this[offset] - var mul = 1 - var i = 0 - while (++i < byteLength && (mul *= 0x100)) { - val += this[offset + i] * mul - } - mul *= 0x80 +},{"../address":1,"../script":26,"../unit":42,"../util/js":45,"../util/preconditions":46,"lodash":156}],42:[function(require,module,exports){ +'use strict'; - if (val >= mul) val -= Math.pow(2, 8 * byteLength) +var _ = require('lodash'); - return val -} +var errors = require('./errors'); +var $ = require('./util/preconditions'); -Buffer.prototype.readIntBE = function readIntBE (offset, byteLength, noAssert) { - offset = offset >>> 0 - byteLength = byteLength >>> 0 - if (!noAssert) checkOffset(offset, byteLength, this.length) +var UNITS = { + 'BTC' : [1e8, 8], + 'mBTC' : [1e5, 5], + 'uBTC' : [1e2, 2], + 'bits' : [1e2, 2], + 'satoshis' : [1, 0] +}; - var i = byteLength - var mul = 1 - var val = this[offset + --i] - while (i > 0 && (mul *= 0x100)) { - val += this[offset + --i] * mul +/** + * Utility for handling and converting bitcoins units. The supported units are + * BTC, mBTC, bits (also named uBTC) and satoshis. A unit instance can be created with an + * amount and a unit code, or alternatively using static methods like {fromBTC}. + * It also allows to be created from a fiat amount and the exchange rate, or + * alternatively using the {fromFiat} static method. + * You can consult for different representation of a unit instance using it's + * {to} method, the fixed unit methods like {toSatoshis} or alternatively using + * the unit accessors. It also can be converted to a fiat amount by providing the + * corresponding BTC/fiat exchange rate. + * + * @example + * ```javascript + * var sats = Unit.fromBTC(1.3).toSatoshis(); + * var mili = Unit.fromBits(1.3).to(Unit.mBTC); + * var bits = Unit.fromFiat(1.3, 350).bits; + * var btc = new Unit(1.3, Unit.bits).BTC; + * ``` + * + * @param {Number} amount - The amount to be represented + * @param {String|Number} code - The unit of the amount or the exchange rate + * @returns {Unit} A new instance of an Unit + * @constructor + */ +function Unit(amount, code) { + if (!(this instanceof Unit)) { + return new Unit(amount, code); } - mul *= 0x80 - - if (val >= mul) val -= Math.pow(2, 8 * byteLength) - return val -} - -Buffer.prototype.readInt8 = function readInt8 (offset, noAssert) { - offset = offset >>> 0 - if (!noAssert) checkOffset(offset, 1, this.length) - if (!(this[offset] & 0x80)) return (this[offset]) - return ((0xff - this[offset] + 1) * -1) -} - -Buffer.prototype.readInt16LE = function readInt16LE (offset, noAssert) { - offset = offset >>> 0 - if (!noAssert) checkOffset(offset, 2, this.length) - var val = this[offset] | (this[offset + 1] << 8) - return (val & 0x8000) ? val | 0xFFFF0000 : val -} + // convert fiat to BTC + if (_.isNumber(code)) { + if (code <= 0) { + throw new errors.Unit.InvalidRate(code); + } + amount = amount / code; + code = Unit.BTC; + } -Buffer.prototype.readInt16BE = function readInt16BE (offset, noAssert) { - offset = offset >>> 0 - if (!noAssert) checkOffset(offset, 2, this.length) - var val = this[offset + 1] | (this[offset] << 8) - return (val & 0x8000) ? val | 0xFFFF0000 : val -} + this._value = this._from(amount, code); -Buffer.prototype.readInt32LE = function readInt32LE (offset, noAssert) { - offset = offset >>> 0 - if (!noAssert) checkOffset(offset, 4, this.length) + var self = this; + var defineAccesor = function(key) { + Object.defineProperty(self, key, { + get: function() { return self.to(key); }, + enumerable: true, + }); + }; - return (this[offset]) | - (this[offset + 1] << 8) | - (this[offset + 2] << 16) | - (this[offset + 3] << 24) + Object.keys(UNITS).forEach(defineAccesor); } -Buffer.prototype.readInt32BE = function readInt32BE (offset, noAssert) { - offset = offset >>> 0 - if (!noAssert) checkOffset(offset, 4, this.length) +Object.keys(UNITS).forEach(function(key) { + Unit[key] = key; +}); - return (this[offset] << 24) | - (this[offset + 1] << 16) | - (this[offset + 2] << 8) | - (this[offset + 3]) -} +/** + * Returns a Unit instance created from JSON string or object + * + * @param {String|Object} json - JSON with keys: amount and code + * @returns {Unit} A Unit instance + */ +Unit.fromObject = function fromObject(data){ + $.checkArgument(_.isObject(data), 'Argument is expected to be an object'); + return new Unit(data.amount, data.code); +}; -Buffer.prototype.readFloatLE = function readFloatLE (offset, noAssert) { - offset = offset >>> 0 - if (!noAssert) checkOffset(offset, 4, this.length) - return ieee754.read(this, offset, true, 23, 4) -} +/** + * Returns a Unit instance created from an amount in BTC + * + * @param {Number} amount - The amount in BTC + * @returns {Unit} A Unit instance + */ +Unit.fromBTC = function(amount) { + return new Unit(amount, Unit.BTC); +}; -Buffer.prototype.readFloatBE = function readFloatBE (offset, noAssert) { - offset = offset >>> 0 - if (!noAssert) checkOffset(offset, 4, this.length) - return ieee754.read(this, offset, false, 23, 4) -} +/** + * Returns a Unit instance created from an amount in mBTC + * + * @param {Number} amount - The amount in mBTC + * @returns {Unit} A Unit instance + */ +Unit.fromMillis = Unit.fromMilis = function(amount) { + return new Unit(amount, Unit.mBTC); +}; -Buffer.prototype.readDoubleLE = function readDoubleLE (offset, noAssert) { - offset = offset >>> 0 - if (!noAssert) checkOffset(offset, 8, this.length) - return ieee754.read(this, offset, true, 52, 8) -} +/** + * Returns a Unit instance created from an amount in bits + * + * @param {Number} amount - The amount in bits + * @returns {Unit} A Unit instance + */ +Unit.fromMicros = Unit.fromBits = function(amount) { + return new Unit(amount, Unit.bits); +}; -Buffer.prototype.readDoubleBE = function readDoubleBE (offset, noAssert) { - offset = offset >>> 0 - if (!noAssert) checkOffset(offset, 8, this.length) - return ieee754.read(this, offset, false, 52, 8) -} +/** + * Returns a Unit instance created from an amount in satoshis + * + * @param {Number} amount - The amount in satoshis + * @returns {Unit} A Unit instance + */ +Unit.fromSatoshis = function(amount) { + return new Unit(amount, Unit.satoshis); +}; -function checkInt (buf, value, offset, ext, max, min) { - if (!Buffer.isBuffer(buf)) throw new TypeError('"buffer" argument must be a Buffer instance') - if (value > max || value < min) throw new RangeError('"value" argument is out of bounds') - if (offset + ext > buf.length) throw new RangeError('Index out of range') -} +/** + * Returns a Unit instance created from a fiat amount and exchange rate. + * + * @param {Number} amount - The amount in fiat + * @param {Number} rate - The exchange rate BTC/fiat + * @returns {Unit} A Unit instance + */ +Unit.fromFiat = function(amount, rate) { + return new Unit(amount, rate); +}; -Buffer.prototype.writeUIntLE = function writeUIntLE (value, offset, byteLength, noAssert) { - value = +value - offset = offset >>> 0 - byteLength = byteLength >>> 0 - if (!noAssert) { - var maxBytes = Math.pow(2, 8 * byteLength) - 1 - checkInt(this, value, offset, byteLength, maxBytes, 0) +Unit.prototype._from = function(amount, code) { + if (!UNITS[code]) { + throw new errors.Unit.UnknownCode(code); } + return parseInt((amount * UNITS[code][0]).toFixed()); +}; - var mul = 1 - var i = 0 - this[offset] = value & 0xFF - while (++i < byteLength && (mul *= 0x100)) { - this[offset + i] = (value / mul) & 0xFF +/** + * Returns the value represented in the specified unit + * + * @param {String|Number} code - The unit code or exchange rate + * @returns {Number} The converted value + */ +Unit.prototype.to = function(code) { + if (_.isNumber(code)) { + if (code <= 0) { + throw new errors.Unit.InvalidRate(code); + } + return parseFloat((this.BTC * code).toFixed(2)); } - return offset + byteLength -} - -Buffer.prototype.writeUIntBE = function writeUIntBE (value, offset, byteLength, noAssert) { - value = +value - offset = offset >>> 0 - byteLength = byteLength >>> 0 - if (!noAssert) { - var maxBytes = Math.pow(2, 8 * byteLength) - 1 - checkInt(this, value, offset, byteLength, maxBytes, 0) + if (!UNITS[code]) { + throw new errors.Unit.UnknownCode(code); } - var i = byteLength - 1 - var mul = 1 - this[offset + i] = value & 0xFF - while (--i >= 0 && (mul *= 0x100)) { - this[offset + i] = (value / mul) & 0xFF - } + var value = this._value / UNITS[code][0]; + return parseFloat(value.toFixed(UNITS[code][1])); +}; - return offset + byteLength -} +/** + * Returns the value represented in BTC + * + * @returns {Number} The value converted to BTC + */ +Unit.prototype.toBTC = function() { + return this.to(Unit.BTC); +}; -Buffer.prototype.writeUInt8 = function writeUInt8 (value, offset, noAssert) { - value = +value - offset = offset >>> 0 - if (!noAssert) checkInt(this, value, offset, 1, 0xff, 0) - this[offset] = (value & 0xff) - return offset + 1 -} +/** + * Returns the value represented in mBTC + * + * @returns {Number} The value converted to mBTC + */ +Unit.prototype.toMillis = Unit.prototype.toMilis = function() { + return this.to(Unit.mBTC); +}; -Buffer.prototype.writeUInt16LE = function writeUInt16LE (value, offset, noAssert) { - value = +value - offset = offset >>> 0 - if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0) - this[offset] = (value & 0xff) - this[offset + 1] = (value >>> 8) - return offset + 2 -} +/** + * Returns the value represented in bits + * + * @returns {Number} The value converted to bits + */ +Unit.prototype.toMicros = Unit.prototype.toBits = function() { + return this.to(Unit.bits); +}; -Buffer.prototype.writeUInt16BE = function writeUInt16BE (value, offset, noAssert) { - value = +value - offset = offset >>> 0 - if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0) - this[offset] = (value >>> 8) - this[offset + 1] = (value & 0xff) - return offset + 2 -} +/** + * Returns the value represented in satoshis + * + * @returns {Number} The value converted to satoshis + */ +Unit.prototype.toSatoshis = function() { + return this.to(Unit.satoshis); +}; -Buffer.prototype.writeUInt32LE = function writeUInt32LE (value, offset, noAssert) { - value = +value - offset = offset >>> 0 - if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0) - this[offset + 3] = (value >>> 24) - this[offset + 2] = (value >>> 16) - this[offset + 1] = (value >>> 8) - this[offset] = (value & 0xff) - return offset + 4 -} +/** + * Returns the value represented in fiat + * + * @param {string} rate - The exchange rate between BTC/currency + * @returns {Number} The value converted to satoshis + */ +Unit.prototype.atRate = function(rate) { + return this.to(rate); +}; -Buffer.prototype.writeUInt32BE = function writeUInt32BE (value, offset, noAssert) { - value = +value - offset = offset >>> 0 - if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0) - this[offset] = (value >>> 24) - this[offset + 1] = (value >>> 16) - this[offset + 2] = (value >>> 8) - this[offset + 3] = (value & 0xff) - return offset + 4 -} +/** + * Returns a the string representation of the value in satoshis + * + * @returns {string} the value in satoshis + */ +Unit.prototype.toString = function() { + return this.satoshis + ' satoshis'; +}; -Buffer.prototype.writeIntLE = function writeIntLE (value, offset, byteLength, noAssert) { - value = +value - offset = offset >>> 0 - if (!noAssert) { - var limit = Math.pow(2, (8 * byteLength) - 1) +/** + * Returns a plain object representation of the Unit + * + * @returns {Object} An object with the keys: amount and code + */ +Unit.prototype.toObject = Unit.prototype.toJSON = function toObject() { + return { + amount: this.BTC, + code: Unit.BTC + }; +}; - checkInt(this, value, offset, byteLength, limit - 1, -limit) - } +/** + * Returns a string formatted for the console + * + * @returns {string} the value in satoshis + */ +Unit.prototype.inspect = function() { + return ''; +}; - var i = 0 - var mul = 1 - var sub = 0 - this[offset] = value & 0xFF - while (++i < byteLength && (mul *= 0x100)) { - if (value < 0 && sub === 0 && this[offset + i - 1] !== 0) { - sub = 1 - } - this[offset + i] = ((value / mul) >> 0) - sub & 0xFF - } +module.exports = Unit; - return offset + byteLength -} +},{"./errors":17,"./util/preconditions":46,"lodash":156}],43:[function(require,module,exports){ +'use strict'; -Buffer.prototype.writeIntBE = function writeIntBE (value, offset, byteLength, noAssert) { - value = +value - offset = offset >>> 0 - if (!noAssert) { - var limit = Math.pow(2, (8 * byteLength) - 1) +var _ = require('lodash'); +var URL = require('url'); - checkInt(this, value, offset, byteLength, limit - 1, -limit) +var Address = require('./address'); +var Unit = require('./unit'); + +/** + * Bitcore URI + * + * Instantiate an URI from a bitcoin URI String or an Object. An URI instance + * can be created with a bitcoin uri string or an object. All instances of + * URI are valid, the static method isValid allows checking before instantiation. + * + * All standard parameters can be found as members of the class, the address + * is represented using an {Address} instance and the amount is represented in + * satoshis. Any other non-standard parameters can be found under the extra member. + * + * @example + * ```javascript + * + * var uri = new URI('bitcoin:12A1MyfXbW6RhdRAZEqofac5jCQQjwEPBu?amount=1.2'); + * console.log(uri.address, uri.amount); + * ``` + * + * @param {string|Object} data - A bitcoin URI string or an Object + * @param {Array.=} knownParams - Required non-standard params + * @throws {TypeError} Invalid bitcoin address + * @throws {TypeError} Invalid amount + * @throws {Error} Unknown required argument + * @returns {URI} A new valid and frozen instance of URI + * @constructor + */ +var URI = function(data, knownParams) { + if (!(this instanceof URI)) { + return new URI(data, knownParams); } - var i = byteLength - 1 - var mul = 1 - var sub = 0 - this[offset + i] = value & 0xFF - while (--i >= 0 && (mul *= 0x100)) { - if (value < 0 && sub === 0 && this[offset + i + 1] !== 0) { - sub = 1 + this.extras = {}; + this.knownParams = knownParams || []; + this.address = this.network = this.amount = this.message = null; + + if (typeof(data) === 'string') { + var params = URI.parse(data); + if (params.amount) { + params.amount = this._parseAmount(params.amount); } - this[offset + i] = ((value / mul) >> 0) - sub & 0xFF + this._fromObject(params); + } else if (typeof(data) === 'object') { + this._fromObject(data); + } else { + throw new TypeError('Unrecognized data format.'); } +}; - return offset + byteLength -} - -Buffer.prototype.writeInt8 = function writeInt8 (value, offset, noAssert) { - value = +value - offset = offset >>> 0 - if (!noAssert) checkInt(this, value, offset, 1, 0x7f, -0x80) - if (value < 0) value = 0xff + value + 1 - this[offset] = (value & 0xff) - return offset + 1 -} +/** + * Instantiate a URI from a String + * + * @param {string} str - JSON string or object of the URI + * @returns {URI} A new instance of a URI + */ +URI.fromString = function fromString(str) { + if (typeof(str) !== 'string') { + throw new TypeError('Expected a string'); + } + return new URI(str); +}; -Buffer.prototype.writeInt16LE = function writeInt16LE (value, offset, noAssert) { - value = +value - offset = offset >>> 0 - if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000) - this[offset] = (value & 0xff) - this[offset + 1] = (value >>> 8) - return offset + 2 -} +/** + * Instantiate a URI from an Object + * + * @param {Object} data - object of the URI + * @returns {URI} A new instance of a URI + */ +URI.fromObject = function fromObject(json) { + return new URI(json); +}; -Buffer.prototype.writeInt16BE = function writeInt16BE (value, offset, noAssert) { - value = +value - offset = offset >>> 0 - if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000) - this[offset] = (value >>> 8) - this[offset + 1] = (value & 0xff) - return offset + 2 -} - -Buffer.prototype.writeInt32LE = function writeInt32LE (value, offset, noAssert) { - value = +value - offset = offset >>> 0 - if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000) - this[offset] = (value & 0xff) - this[offset + 1] = (value >>> 8) - this[offset + 2] = (value >>> 16) - this[offset + 3] = (value >>> 24) - return offset + 4 -} - -Buffer.prototype.writeInt32BE = function writeInt32BE (value, offset, noAssert) { - value = +value - offset = offset >>> 0 - if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000) - if (value < 0) value = 0xffffffff + value + 1 - this[offset] = (value >>> 24) - this[offset + 1] = (value >>> 16) - this[offset + 2] = (value >>> 8) - this[offset + 3] = (value & 0xff) - return offset + 4 -} - -function checkIEEE754 (buf, value, offset, ext, max, min) { - if (offset + ext > buf.length) throw new RangeError('Index out of range') - if (offset < 0) throw new RangeError('Index out of range') -} - -function writeFloat (buf, value, offset, littleEndian, noAssert) { - value = +value - offset = offset >>> 0 - if (!noAssert) { - checkIEEE754(buf, value, offset, 4, 3.4028234663852886e+38, -3.4028234663852886e+38) +/** + * Check if an bitcoin URI string is valid + * + * @example + * ```javascript + * + * var valid = URI.isValid('bitcoin:12A1MyfXbW6RhdRAZEqofac5jCQQjwEPBu'); + * // true + * ``` + * + * @param {string|Object} data - A bitcoin URI string or an Object + * @param {Array.=} knownParams - Required non-standard params + * @returns {boolean} Result of uri validation + */ +URI.isValid = function(arg, knownParams) { + try { + new URI(arg, knownParams); + } catch (err) { + return false; } - ieee754.write(buf, value, offset, littleEndian, 23, 4) - return offset + 4 -} - -Buffer.prototype.writeFloatLE = function writeFloatLE (value, offset, noAssert) { - return writeFloat(this, value, offset, true, noAssert) -} + return true; +}; -Buffer.prototype.writeFloatBE = function writeFloatBE (value, offset, noAssert) { - return writeFloat(this, value, offset, false, noAssert) -} +/** + * Convert a bitcoin URI string into a simple object. + * + * @param {string} uri - A bitcoin URI string + * @throws {TypeError} Invalid bitcoin URI + * @returns {Object} An object with the parsed params + */ +URI.parse = function(uri) { + var info = URL.parse(uri, true); -function writeDouble (buf, value, offset, littleEndian, noAssert) { - value = +value - offset = offset >>> 0 - if (!noAssert) { - checkIEEE754(buf, value, offset, 8, 1.7976931348623157E+308, -1.7976931348623157E+308) + if (info.protocol !== 'bitcoin:') { + throw new TypeError('Invalid bitcoin URI'); } - ieee754.write(buf, value, offset, littleEndian, 52, 8) - return offset + 8 -} - -Buffer.prototype.writeDoubleLE = function writeDoubleLE (value, offset, noAssert) { - return writeDouble(this, value, offset, true, noAssert) -} -Buffer.prototype.writeDoubleBE = function writeDoubleBE (value, offset, noAssert) { - return writeDouble(this, value, offset, false, noAssert) -} + // workaround to host insensitiveness + var group = /[^:]*:\/?\/?([^?]*)/.exec(uri); + info.query.address = group && group[1] || undefined; -// copy(targetBuffer, targetStart=0, sourceStart=0, sourceEnd=buffer.length) -Buffer.prototype.copy = function copy (target, targetStart, start, end) { - if (!Buffer.isBuffer(target)) throw new TypeError('argument should be a Buffer') - if (!start) start = 0 - if (!end && end !== 0) end = this.length - if (targetStart >= target.length) targetStart = target.length - if (!targetStart) targetStart = 0 - if (end > 0 && end < start) end = start + return info.query; +}; - // Copy 0 bytes; we're done - if (end === start) return 0 - if (target.length === 0 || this.length === 0) return 0 +URI.Members = ['address', 'amount', 'message', 'label', 'r']; - // Fatal error conditions - if (targetStart < 0) { - throw new RangeError('targetStart out of bounds') - } - if (start < 0 || start >= this.length) throw new RangeError('Index out of range') - if (end < 0) throw new RangeError('sourceEnd out of bounds') +/** + * Internal function to load the URI instance with an object. + * + * @param {Object} obj - Object with the information + * @throws {TypeError} Invalid bitcoin address + * @throws {TypeError} Invalid amount + * @throws {Error} Unknown required argument + */ +URI.prototype._fromObject = function(obj) { + /* jshint maxcomplexity: 10 */ - // Are we oob? - if (end > this.length) end = this.length - if (target.length - targetStart < end - start) { - end = target.length - targetStart + start + if (!Address.isValid(obj.address)) { + throw new TypeError('Invalid bitcoin address'); } - var len = end - start + this.address = new Address(obj.address); + this.network = this.address.network; + this.amount = obj.amount; - if (this === target && typeof Uint8Array.prototype.copyWithin === 'function') { - // Use built-in when available, missing from IE11 - this.copyWithin(targetStart, start, end) - } else if (this === target && start < targetStart && targetStart < end) { - // descending copy from end - for (var i = len - 1; i >= 0; --i) { - target[i + targetStart] = this[i + start] + for (var key in obj) { + if (key === 'address' || key === 'amount') { + continue; } - } else { - Uint8Array.prototype.set.call( - target, - this.subarray(start, end), - targetStart - ) - } - - return len -} -// Usage: -// buffer.fill(number[, offset[, end]]) -// buffer.fill(buffer[, offset[, end]]) -// buffer.fill(string[, offset[, end]][, encoding]) -Buffer.prototype.fill = function fill (val, start, end, encoding) { - // Handle string cases: - if (typeof val === 'string') { - if (typeof start === 'string') { - encoding = start - start = 0 - end = this.length - } else if (typeof end === 'string') { - encoding = end - end = this.length - } - if (encoding !== undefined && typeof encoding !== 'string') { - throw new TypeError('encoding must be a string') - } - if (typeof encoding === 'string' && !Buffer.isEncoding(encoding)) { - throw new TypeError('Unknown encoding: ' + encoding) - } - if (val.length === 1) { - var code = val.charCodeAt(0) - if ((encoding === 'utf8' && code < 128) || - encoding === 'latin1') { - // Fast path: If `val` fits into a single byte, use that numeric value. - val = code - } + if (/^req-/.exec(key) && this.knownParams.indexOf(key) === -1) { + throw Error('Unknown required argument ' + key); } - } else if (typeof val === 'number') { - val = val & 255 - } - // Invalid ranges are not set to a default, so can range check early. - if (start < 0 || this.length < start || this.length < end) { - throw new RangeError('Out of range index') + var destination = URI.Members.indexOf(key) > -1 ? this : this.extras; + destination[key] = obj[key]; } +}; - if (end <= start) { - return this +/** + * Internal function to transform a BTC string amount into satoshis + * + * @param {string} amount - Amount BTC string + * @throws {TypeError} Invalid amount + * @returns {Object} Amount represented in satoshis + */ +URI.prototype._parseAmount = function(amount) { + amount = Number(amount); + if (isNaN(amount)) { + throw new TypeError('Invalid amount'); } + return Unit.fromBTC(amount).toSatoshis(); +}; - start = start >>> 0 - end = end === undefined ? this.length : end >>> 0 - - if (!val) val = 0 - - var i - if (typeof val === 'number') { - for (i = start; i < end; ++i) { - this[i] = val - } - } else { - var bytes = Buffer.isBuffer(val) - ? val - : Buffer.from(val, encoding) - var len = bytes.length - if (len === 0) { - throw new TypeError('The value "' + val + - '" is invalid for argument "value"') - } - for (i = 0; i < end - start; ++i) { - this[i + start] = bytes[i % len] +URI.prototype.toObject = URI.prototype.toJSON = function toObject() { + var json = {}; + for (var i = 0; i < URI.Members.length; i++) { + var m = URI.Members[i]; + if (this.hasOwnProperty(m) && typeof(this[m]) !== 'undefined') { + json[m] = this[m].toString(); } } + _.extend(json, this.extras); + return json; +}; - return this -} - -// HELPER FUNCTIONS -// ================ - -var INVALID_BASE64_RE = /[^+/0-9A-Za-z-_]/g - -function base64clean (str) { - // Node takes equal signs as end of the Base64 encoding - str = str.split('=')[0] - // Node strips out invalid characters like \n and \t from the string, base64-js does not - str = str.trim().replace(INVALID_BASE64_RE, '') - // Node converts strings with length < 2 to '' - if (str.length < 2) return '' - // Node allows for non-padded base64 strings (missing trailing ===), base64-js does not - while (str.length % 4 !== 0) { - str = str + '=' +/** + * Will return a the string representation of the URI + * + * @returns {string} Bitcoin URI string + */ +URI.prototype.toString = function() { + var query = {}; + if (this.amount) { + query.amount = Unit.fromSatoshis(this.amount).toBTC(); } - return str -} + if (this.message) { + query.message = this.message; + } + if (this.label) { + query.label = this.label; + } + if (this.r) { + query.r = this.r; + } + _.extend(query, this.extras); -function toHex (n) { - if (n < 16) return '0' + n.toString(16) - return n.toString(16) -} + return URL.format({ + protocol: 'bitcoin:', + host: this.address, + query: query + }); +}; -function utf8ToBytes (string, units) { - units = units || Infinity - var codePoint - var length = string.length - var leadSurrogate = null - var bytes = [] +/** + * Will return a string formatted for the console + * + * @returns {string} Bitcoin URI + */ +URI.prototype.inspect = function() { + return ''; +}; - for (var i = 0; i < length; ++i) { - codePoint = string.charCodeAt(i) +module.exports = URI; - // is surrogate component - if (codePoint > 0xD7FF && codePoint < 0xE000) { - // last char was a lead - if (!leadSurrogate) { - // no lead yet - if (codePoint > 0xDBFF) { - // unexpected trail - if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD) - continue - } else if (i + 1 === length) { - // unpaired lead - if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD) - continue - } +},{"./address":1,"./unit":42,"lodash":156,"url":211}],44:[function(require,module,exports){ +(function (Buffer){ +'use strict'; - // valid lead - leadSurrogate = codePoint +var buffer = require('buffer'); +var assert = require('assert'); - continue - } +var js = require('./js'); +var $ = require('./preconditions'); - // 2 leads in a row - if (codePoint < 0xDC00) { - if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD) - leadSurrogate = codePoint - continue - } +function equals(a, b) { + if (a.length !== b.length) { + return false; + } + var length = a.length; + for (var i = 0; i < length; i++) { + if (a[i] !== b[i]) { + return false; + } + } + return true; +} - // valid surrogate pair - codePoint = (leadSurrogate - 0xD800 << 10 | codePoint - 0xDC00) + 0x10000 - } else if (leadSurrogate) { - // valid bmp char, but last char was a lead - if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD) +module.exports = { + /** + * Fill a buffer with a value. + * + * @param {Buffer} buffer + * @param {number} value + * @return {Buffer} + */ + fill: function fill(buffer, value) { + $.checkArgumentType(buffer, 'Buffer', 'buffer'); + $.checkArgumentType(value, 'number', 'value'); + var length = buffer.length; + for (var i = 0; i < length; i++) { + buffer[i] = value; } + return buffer; + }, - leadSurrogate = null + /** + * Return a copy of a buffer + * + * @param {Buffer} original + * @return {Buffer} + */ + copy: function(original) { + var buffer = Buffer.alloc(original.length); + original.copy(buffer); + return buffer; + }, - // encode utf8 - if (codePoint < 0x80) { - if ((units -= 1) < 0) break - bytes.push(codePoint) - } else if (codePoint < 0x800) { - if ((units -= 2) < 0) break - bytes.push( - codePoint >> 0x6 | 0xC0, - codePoint & 0x3F | 0x80 - ) - } else if (codePoint < 0x10000) { - if ((units -= 3) < 0) break - bytes.push( - codePoint >> 0xC | 0xE0, - codePoint >> 0x6 & 0x3F | 0x80, - codePoint & 0x3F | 0x80 - ) - } else if (codePoint < 0x110000) { - if ((units -= 4) < 0) break - bytes.push( - codePoint >> 0x12 | 0xF0, - codePoint >> 0xC & 0x3F | 0x80, - codePoint >> 0x6 & 0x3F | 0x80, - codePoint & 0x3F | 0x80 - ) - } else { - throw new Error('Invalid code point') + /** + * Returns true if the given argument is an instance of a buffer. Tests for + * both node's Buffer and Uint8Array + * + * @param {*} arg + * @return {boolean} + */ + isBuffer: function isBuffer(arg) { + return buffer.Buffer.isBuffer(arg) || arg instanceof Uint8Array; + }, + + /** + * Returns a zero-filled byte array + * + * @param {number} bytes + * @return {Buffer} + */ + emptyBuffer: function emptyBuffer(bytes) { + $.checkArgumentType(bytes, 'number', 'bytes'); + var result = new buffer.Buffer(bytes); + for (var i = 0; i < bytes; i++) { + result.write('\0', i); } - } + return result; + }, - return bytes -} + /** + * Concatenates a buffer + * + * Shortcut for buffer.Buffer.concat + */ + concat: buffer.Buffer.concat, -function asciiToBytes (str) { - var byteArray = [] - for (var i = 0; i < str.length; ++i) { - // Node's code seems to be doing this and not & 0x7F.. - byteArray.push(str.charCodeAt(i) & 0xFF) - } - return byteArray -} + equals: equals, + equal: equals, -function utf16leToBytes (str, units) { - var c, hi, lo - var byteArray = [] - for (var i = 0; i < str.length; ++i) { - if ((units -= 2) < 0) break + /** + * Transforms a number from 0 to 255 into a Buffer of size 1 with that value + * + * @param {number} integer + * @return {Buffer} + */ + integerAsSingleByteBuffer: function integerAsSingleByteBuffer(integer) { + $.checkArgumentType(integer, 'number', 'integer'); + return new buffer.Buffer([integer & 0xff]); + }, - c = str.charCodeAt(i) - hi = c >> 8 - lo = c % 256 - byteArray.push(lo) - byteArray.push(hi) - } + /** + * Transform a 4-byte integer into a Buffer of length 4. + * + * @param {number} integer + * @return {Buffer} + */ + integerAsBuffer: function integerAsBuffer(integer) { + $.checkArgumentType(integer, 'number', 'integer'); + var bytes = []; + bytes.push((integer >> 24) & 0xff); + bytes.push((integer >> 16) & 0xff); + bytes.push((integer >> 8) & 0xff); + bytes.push(integer & 0xff); + return Buffer.from(bytes); + }, - return byteArray -} + /** + * Transform the first 4 values of a Buffer into a number, in little endian encoding + * + * @param {Buffer} buffer + * @return {number} + */ + integerFromBuffer: function integerFromBuffer(buffer) { + $.checkArgumentType(buffer, 'Buffer', 'buffer'); + return buffer[0] << 24 | buffer[1] << 16 | buffer[2] << 8 | buffer[3]; + }, -function base64ToBytes (str) { - return base64.toByteArray(base64clean(str)) -} + /** + * Transforms the first byte of an array into a number ranging from -128 to 127 + * @param {Buffer} buffer + * @return {number} + */ + integerFromSingleByteBuffer: function integerFromBuffer(buffer) { + $.checkArgumentType(buffer, 'Buffer', 'buffer'); + return buffer[0]; + }, -function blitBuffer (src, dst, offset, length) { - for (var i = 0; i < length; ++i) { - if ((i + offset >= dst.length) || (i >= src.length)) break - dst[i + offset] = src[i] - } - return i -} - -// ArrayBuffer or Uint8Array objects from other contexts (i.e. iframes) do not pass -// the `instanceof` check but they should be treated as of that type. -// See: https://github.com/feross/buffer/issues/166 -function isInstance (obj, type) { - return obj instanceof type || - (obj != null && obj.constructor != null && obj.constructor.name != null && - obj.constructor.name === type.name) -} -function numberIsNaN (obj) { - // For IE11 support - return obj !== obj // eslint-disable-line no-self-compare -} + /** + * Transforms a buffer into a string with a number in hexa representation + * + * Shorthand for buffer.toString('hex') + * + * @param {Buffer} buffer + * @return {string} + */ + bufferToHex: function bufferToHex(buffer) { + $.checkArgumentType(buffer, 'Buffer', 'buffer'); + return buffer.toString('hex'); + }, -},{"base64-js":19,"ieee754":103}],53:[function(require,module,exports){ -var Buffer = require('safe-buffer').Buffer -var Transform = require('stream').Transform -var StringDecoder = require('string_decoder').StringDecoder -var inherits = require('inherits') + /** + * Reverse a buffer + * @param {Buffer} param + * @return {Buffer} + */ + reverse: function reverse(param) { + var ret = new buffer.Buffer(param.length); + for (var i = 0; i < param.length; i++) { + ret[i] = param[param.length - i - 1]; + } + return ret; + }, -function CipherBase (hashMode) { - Transform.call(this) - this.hashMode = typeof hashMode === 'string' - if (this.hashMode) { - this[hashMode] = this._finalOrDigest - } else { - this.final = this._finalOrDigest - } - if (this._final) { - this.__final = this._final - this._final = null + /** + * Transforms an hexa encoded string into a Buffer with binary values + * + * Shorthand for Buffer(string, 'hex') + * + * @param {string} string + * @return {Buffer} + */ + hexToBuffer: function hexToBuffer(string) { + assert(js.isHexa(string)); + return new buffer.Buffer(string, 'hex'); } - this._decoder = null - this._encoding = null -} -inherits(CipherBase, Transform) +}; -CipherBase.prototype.update = function (data, inputEnc, outputEnc) { - if (typeof data === 'string') { - data = Buffer.from(data, inputEnc) - } +module.exports.NULL_HASH = module.exports.fill(Buffer.alloc(32), 0); +module.exports.EMPTY_BUFFER = Buffer.alloc(0); - var outData = this._update(data) - if (this.hashMode) return this +}).call(this,require("buffer").Buffer) +},{"./js":45,"./preconditions":46,"assert":61,"buffer":100}],45:[function(require,module,exports){ +'use strict'; - if (outputEnc) { - outData = this._toString(outData, outputEnc) +var _ = require('lodash'); + +/** + * Determines whether a string contains only hexadecimal values + * + * @name JSUtil.isHexa + * @param {string} value + * @return {boolean} true if the string is the hexa representation of a number + */ +var isHexa = function isHexa(value) { + if (!_.isString(value)) { + return false; } + return /^[0-9a-fA-F]+$/.test(value); +}; - return outData -} +/** + * @namespace JSUtil + */ +module.exports = { + /** + * Test if an argument is a valid JSON object. If it is, returns a truthy + * value (the json object decoded), so no double JSON.parse call is necessary + * + * @param {string} arg + * @return {Object|boolean} false if the argument is not a JSON string. + */ + isValidJSON: function isValidJSON(arg) { + var parsed; + if (!_.isString(arg)) { + return false; + } + try { + parsed = JSON.parse(arg); + } catch (e) { + return false; + } + if (typeof(parsed) === 'object') { + return true; + } + return false; + }, + isHexa: isHexa, + isHexaString: isHexa, -CipherBase.prototype.setAutoPadding = function () {} -CipherBase.prototype.getAuthTag = function () { - throw new Error('trying to get auth tag in unsupported state') -} + /** + * Clone an array + */ + cloneArray: function(array) { + return [].concat(array); + }, -CipherBase.prototype.setAuthTag = function () { - throw new Error('trying to set auth tag in unsupported state') -} + /** + * Define immutable properties on a target object + * + * @param {Object} target - An object to be extended + * @param {Object} values - An object of properties + * @return {Object} The target object + */ + defineImmutable: function defineImmutable(target, values) { + Object.keys(values).forEach(function(key){ + Object.defineProperty(target, key, { + configurable: false, + enumerable: true, + value: values[key] + }); + }); + return target; + }, + /** + * Checks that a value is a natural number, a positive integer or zero. + * + * @param {*} value + * @return {Boolean} + */ + isNaturalNumber: function isNaturalNumber(value) { + return typeof value === 'number' && + isFinite(value) && + Math.floor(value) === value && + value >= 0; + } +}; -CipherBase.prototype.setAAD = function () { - throw new Error('trying to set aad in unsupported state') -} +},{"lodash":156}],46:[function(require,module,exports){ +'use strict'; -CipherBase.prototype._transform = function (data, _, next) { - var err - try { - if (this.hashMode) { - this._update(data) +var errors = require('../errors'); +var _ = require('lodash'); + +module.exports = { + checkState: function(condition, message) { + if (!condition) { + throw new errors.InvalidState(message); + } + }, + checkArgument: function(condition, argumentName, message, docsPath) { + if (!condition) { + throw new errors.InvalidArgument(argumentName, message, docsPath); + } + }, + checkArgumentType: function(argument, type, argumentName) { + argumentName = argumentName || '(unknown name)'; + if (_.isString(type)) { + if (type === 'Buffer') { + var buffer = require('buffer'); // './buffer' fails on cordova & RN + if (!buffer.Buffer.isBuffer(argument)) { + throw new errors.InvalidArgumentType(argument, type, argumentName); + } + } else if (typeof argument !== type) { + throw new errors.InvalidArgumentType(argument, type, argumentName); + } } else { - this.push(this._update(data)) + if (!(argument instanceof type)) { + throw new errors.InvalidArgumentType(argument, type.name, argumentName); + } } - } catch (e) { - err = e - } finally { - next(err) - } -} -CipherBase.prototype._flush = function (done) { - var err - try { - this.push(this.__final()) - } catch (e) { - err = e } +}; - done(err) -} -CipherBase.prototype._finalOrDigest = function (outputEnc) { - var outData = this.__final() || Buffer.alloc(0) - if (outputEnc) { - outData = this._toString(outData, outputEnc, true) - } - return outData -} +},{"../errors":17,"buffer":100,"lodash":156}],47:[function(require,module,exports){ +var asn1 = exports; -CipherBase.prototype._toString = function (value, enc, fin) { - if (!this._decoder) { - this._decoder = new StringDecoder(enc) - this._encoding = enc - } +asn1.bignum = require('bn.js'); - if (this._encoding !== enc) throw new Error('can\'t switch encodings') +asn1.define = require('./asn1/api').define; +asn1.base = require('./asn1/base'); +asn1.constants = require('./asn1/constants'); +asn1.decoders = require('./asn1/decoders'); +asn1.encoders = require('./asn1/encoders'); - var out = this._decoder.write(value) - if (fin) { - out += this._decoder.end() - } +},{"./asn1/api":48,"./asn1/base":50,"./asn1/constants":54,"./asn1/decoders":56,"./asn1/encoders":59,"bn.js":66}],48:[function(require,module,exports){ +var asn1 = require('../asn1'); +var inherits = require('inherits'); - return out -} +var api = exports; -module.exports = CipherBase +api.define = function define(name, body) { + return new Entity(name, body); +}; -},{"inherits":104,"safe-buffer":148,"stream":157,"string_decoder":158}],54:[function(require,module,exports){ -(function (Buffer){ -// Copyright Joyent, Inc. and other Node contributors. -// -// Permission is hereby granted, free of charge, to any person obtaining a -// copy of this software and associated documentation files (the -// "Software"), to deal in the Software without restriction, including -// without limitation the rights to use, copy, modify, merge, publish, -// distribute, sublicense, and/or sell copies of the Software, and to permit -// persons to whom the Software is furnished to do so, subject to the -// following conditions: -// -// The above copyright notice and this permission notice shall be included -// in all copies or substantial portions of the Software. -// -// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS -// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF -// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN -// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, -// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR -// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE -// USE OR OTHER DEALINGS IN THE SOFTWARE. +function Entity(name, body) { + this.name = name; + this.body = body; -// NOTE: These type checking functions intentionally don't use `instanceof` -// because it is fragile and can be easily faked with `Object.create()`. + this.decoders = {}; + this.encoders = {}; +}; -function isArray(arg) { - if (Array.isArray) { - return Array.isArray(arg); +Entity.prototype._createNamed = function createNamed(base) { + var named; + try { + named = require('vm').runInThisContext( + '(function ' + this.name + '(entity) {\n' + + ' this._initNamed(entity);\n' + + '})' + ); + } catch (e) { + named = function (entity) { + this._initNamed(entity); + }; } - return objectToString(arg) === '[object Array]'; -} -exports.isArray = isArray; + inherits(named, base); + named.prototype._initNamed = function initnamed(entity) { + base.call(this, entity); + }; -function isBoolean(arg) { - return typeof arg === 'boolean'; -} -exports.isBoolean = isBoolean; + return new named(this); +}; -function isNull(arg) { - return arg === null; -} -exports.isNull = isNull; +Entity.prototype._getDecoder = function _getDecoder(enc) { + enc = enc || 'der'; + // Lazily create decoder + if (!this.decoders.hasOwnProperty(enc)) + this.decoders[enc] = this._createNamed(asn1.decoders[enc]); + return this.decoders[enc]; +}; -function isNullOrUndefined(arg) { - return arg == null; -} -exports.isNullOrUndefined = isNullOrUndefined; +Entity.prototype.decode = function decode(data, enc, options) { + return this._getDecoder(enc).decode(data, options); +}; -function isNumber(arg) { - return typeof arg === 'number'; -} -exports.isNumber = isNumber; +Entity.prototype._getEncoder = function _getEncoder(enc) { + enc = enc || 'der'; + // Lazily create encoder + if (!this.encoders.hasOwnProperty(enc)) + this.encoders[enc] = this._createNamed(asn1.encoders[enc]); + return this.encoders[enc]; +}; -function isString(arg) { - return typeof arg === 'string'; -} -exports.isString = isString; +Entity.prototype.encode = function encode(data, enc, /* internal */ reporter) { + return this._getEncoder(enc).encode(data, reporter); +}; -function isSymbol(arg) { - return typeof arg === 'symbol'; -} -exports.isSymbol = isSymbol; +},{"../asn1":47,"inherits":153,"vm":214}],49:[function(require,module,exports){ +var inherits = require('inherits'); +var Reporter = require('../base').Reporter; +var Buffer = require('buffer').Buffer; -function isUndefined(arg) { - return arg === void 0; -} -exports.isUndefined = isUndefined; +function DecoderBuffer(base, options) { + Reporter.call(this, options); + if (!Buffer.isBuffer(base)) { + this.error('Input not Buffer'); + return; + } -function isRegExp(re) { - return objectToString(re) === '[object RegExp]'; + this.base = base; + this.offset = 0; + this.length = base.length; } -exports.isRegExp = isRegExp; +inherits(DecoderBuffer, Reporter); +exports.DecoderBuffer = DecoderBuffer; -function isObject(arg) { - return typeof arg === 'object' && arg !== null; -} -exports.isObject = isObject; +DecoderBuffer.prototype.save = function save() { + return { offset: this.offset, reporter: Reporter.prototype.save.call(this) }; +}; -function isDate(d) { - return objectToString(d) === '[object Date]'; -} -exports.isDate = isDate; +DecoderBuffer.prototype.restore = function restore(save) { + // Return skipped data + var res = new DecoderBuffer(this.base); + res.offset = save.offset; + res.length = this.offset; -function isError(e) { - return (objectToString(e) === '[object Error]' || e instanceof Error); -} -exports.isError = isError; + this.offset = save.offset; + Reporter.prototype.restore.call(this, save.reporter); -function isFunction(arg) { - return typeof arg === 'function'; -} -exports.isFunction = isFunction; + return res; +}; -function isPrimitive(arg) { - return arg === null || - typeof arg === 'boolean' || - typeof arg === 'number' || - typeof arg === 'string' || - typeof arg === 'symbol' || // ES6 symbol - typeof arg === 'undefined'; +DecoderBuffer.prototype.isEmpty = function isEmpty() { + return this.offset === this.length; +}; + +DecoderBuffer.prototype.readUInt8 = function readUInt8(fail) { + if (this.offset + 1 <= this.length) + return this.base.readUInt8(this.offset++, true); + else + return this.error(fail || 'DecoderBuffer overrun'); } -exports.isPrimitive = isPrimitive; -exports.isBuffer = Buffer.isBuffer; +DecoderBuffer.prototype.skip = function skip(bytes, fail) { + if (!(this.offset + bytes <= this.length)) + return this.error(fail || 'DecoderBuffer overrun'); -function objectToString(o) { - return Object.prototype.toString.call(o); -} + var res = new DecoderBuffer(this.base); -}).call(this,{"isBuffer":require("../../is-buffer/index.js")}) -},{"../../is-buffer/index.js":105}],55:[function(require,module,exports){ -(function (Buffer){ -var elliptic = require('elliptic') -var BN = require('bn.js') + // Share reporter state + res._reporterState = this._reporterState; -module.exports = function createECDH (curve) { - return new ECDH(curve) + res.offset = this.offset; + res.length = this.offset + bytes; + this.offset += bytes; + return res; } -var aliases = { - secp256k1: { - name: 'secp256k1', - byteLength: 32 - }, - secp224r1: { - name: 'p224', - byteLength: 28 - }, - prime256v1: { - name: 'p256', - byteLength: 32 - }, - prime192v1: { - name: 'p192', - byteLength: 24 - }, - ed25519: { - name: 'ed25519', - byteLength: 32 - }, - secp384r1: { - name: 'p384', - byteLength: 48 - }, - secp521r1: { - name: 'p521', - byteLength: 66 - } +DecoderBuffer.prototype.raw = function raw(save) { + return this.base.slice(save ? save.offset : this.offset, this.length); } -aliases.p224 = aliases.secp224r1 -aliases.p256 = aliases.secp256r1 = aliases.prime256v1 -aliases.p192 = aliases.secp192r1 = aliases.prime192v1 -aliases.p384 = aliases.secp384r1 -aliases.p521 = aliases.secp521r1 - -function ECDH (curve) { - this.curveType = aliases[curve] - if (!this.curveType) { - this.curveType = { - name: curve - } +function EncoderBuffer(value, reporter) { + if (Array.isArray(value)) { + this.length = 0; + this.value = value.map(function(item) { + if (!(item instanceof EncoderBuffer)) + item = new EncoderBuffer(item, reporter); + this.length += item.length; + return item; + }, this); + } else if (typeof value === 'number') { + if (!(0 <= value && value <= 0xff)) + return reporter.error('non-byte EncoderBuffer value'); + this.value = value; + this.length = 1; + } else if (typeof value === 'string') { + this.value = value; + this.length = Buffer.byteLength(value); + } else if (Buffer.isBuffer(value)) { + this.value = value; + this.length = value.length; + } else { + return reporter.error('Unsupported type: ' + typeof value); } - this.curve = new elliptic.ec(this.curveType.name) // eslint-disable-line new-cap - this.keys = void 0 } +exports.EncoderBuffer = EncoderBuffer; -ECDH.prototype.generateKeys = function (enc, format) { - this.keys = this.curve.genKeyPair() - return this.getPublicKey(enc, format) -} +EncoderBuffer.prototype.join = function join(out, offset) { + if (!out) + out = new Buffer(this.length); + if (!offset) + offset = 0; -ECDH.prototype.computeSecret = function (other, inenc, enc) { - inenc = inenc || 'utf8' - if (!Buffer.isBuffer(other)) { - other = new Buffer(other, inenc) - } - var otherPub = this.curve.keyFromPublic(other).getPublic() - var out = otherPub.mul(this.keys.getPrivate()).getX() - return formatReturnValue(out, enc, this.curveType.byteLength) -} + if (this.length === 0) + return out; -ECDH.prototype.getPublicKey = function (enc, format) { - var key = this.keys.getPublic(format === 'compressed', true) - if (format === 'hybrid') { - if (key[key.length - 1] % 2) { - key[0] = 7 - } else { - key[0] = 6 - } + if (Array.isArray(this.value)) { + this.value.forEach(function(item) { + item.join(out, offset); + offset += item.length; + }); + } else { + if (typeof this.value === 'number') + out[offset] = this.value; + else if (typeof this.value === 'string') + out.write(this.value, offset); + else if (Buffer.isBuffer(this.value)) + this.value.copy(out, offset); + offset += this.length; } - return formatReturnValue(key, enc) -} -ECDH.prototype.getPrivateKey = function (enc) { - return formatReturnValue(this.keys.getPrivate(), enc) -} + return out; +}; -ECDH.prototype.setPublicKey = function (pub, enc) { - enc = enc || 'utf8' - if (!Buffer.isBuffer(pub)) { - pub = new Buffer(pub, enc) - } - this.keys._importPublic(pub) - return this -} +},{"../base":50,"buffer":100,"inherits":153}],50:[function(require,module,exports){ +var base = exports; -ECDH.prototype.setPrivateKey = function (priv, enc) { - enc = enc || 'utf8' - if (!Buffer.isBuffer(priv)) { - priv = new Buffer(priv, enc) - } +base.Reporter = require('./reporter').Reporter; +base.DecoderBuffer = require('./buffer').DecoderBuffer; +base.EncoderBuffer = require('./buffer').EncoderBuffer; +base.Node = require('./node'); - var _priv = new BN(priv) - _priv = _priv.toString(16) - this.keys = this.curve.genKeyPair() - this.keys._importPrivate(_priv) - return this -} +},{"./buffer":49,"./node":51,"./reporter":52}],51:[function(require,module,exports){ +var Reporter = require('../base').Reporter; +var EncoderBuffer = require('../base').EncoderBuffer; +var DecoderBuffer = require('../base').DecoderBuffer; +var assert = require('minimalistic-assert'); -function formatReturnValue (bn, enc, len) { - if (!Array.isArray(bn)) { - bn = bn.toArray() - } - var buf = new Buffer(bn) - if (len && buf.length < len) { - var zeros = new Buffer(len - buf.length) - zeros.fill(0) - buf = Buffer.concat([zeros, buf]) - } - if (!enc) { - return buf - } else { - return buf.toString(enc) - } -} +// Supported tags +var tags = [ + 'seq', 'seqof', 'set', 'setof', 'objid', 'bool', + 'gentime', 'utctime', 'null_', 'enum', 'int', 'objDesc', + 'bitstr', 'bmpstr', 'charstr', 'genstr', 'graphstr', 'ia5str', 'iso646str', + 'numstr', 'octstr', 'printstr', 't61str', 'unistr', 'utf8str', 'videostr' +]; -}).call(this,require("buffer").Buffer) -},{"bn.js":20,"buffer":52,"elliptic":71}],56:[function(require,module,exports){ -'use strict' -var inherits = require('inherits') -var MD5 = require('md5.js') -var RIPEMD160 = require('ripemd160') -var sha = require('sha.js') -var Base = require('cipher-base') +// Public methods list +var methods = [ + 'key', 'obj', 'use', 'optional', 'explicit', 'implicit', 'def', 'choice', + 'any', 'contains' +].concat(tags); -function Hash (hash) { - Base.call(this, 'digest') +// Overrided methods list +var overrided = [ + '_peekTag', '_decodeTag', '_use', + '_decodeStr', '_decodeObjid', '_decodeTime', + '_decodeNull', '_decodeInt', '_decodeBool', '_decodeList', - this._hash = hash -} + '_encodeComposite', '_encodeStr', '_encodeObjid', '_encodeTime', + '_encodeNull', '_encodeInt', '_encodeBool' +]; -inherits(Hash, Base) +function Node(enc, parent) { + var state = {}; + this._baseState = state; -Hash.prototype._update = function (data) { - this._hash.update(data) -} + state.enc = enc; -Hash.prototype._final = function () { - return this._hash.digest() -} + state.parent = parent || null; + state.children = null; -module.exports = function createHash (alg) { - alg = alg.toLowerCase() - if (alg === 'md5') return new MD5() - if (alg === 'rmd160' || alg === 'ripemd160') return new RIPEMD160() + // State + state.tag = null; + state.args = null; + state.reverseArgs = null; + state.choice = null; + state.optional = false; + state.any = false; + state.obj = false; + state.use = null; + state.useDecoder = null; + state.key = null; + state['default'] = null; + state.explicit = null; + state.implicit = null; + state.contains = null; - return new Hash(sha(alg)) + // Should create new instance on each method + if (!state.parent) { + state.children = []; + this._wrap(); + } } +module.exports = Node; -},{"cipher-base":53,"inherits":104,"md5.js":107,"ripemd160":147,"sha.js":150}],57:[function(require,module,exports){ -var MD5 = require('md5.js') +var stateProps = [ + 'enc', 'parent', 'children', 'tag', 'args', 'reverseArgs', 'choice', + 'optional', 'any', 'obj', 'use', 'alteredUse', 'key', 'default', 'explicit', + 'implicit', 'contains' +]; -module.exports = function (buffer) { - return new MD5().update(buffer).digest() -} +Node.prototype.clone = function clone() { + var state = this._baseState; + var cstate = {}; + stateProps.forEach(function(prop) { + cstate[prop] = state[prop]; + }); + var res = new this.constructor(cstate.parent); + res._baseState = cstate; + return res; +}; -},{"md5.js":107}],58:[function(require,module,exports){ -'use strict' -var inherits = require('inherits') -var Legacy = require('./legacy') -var Base = require('cipher-base') -var Buffer = require('safe-buffer').Buffer -var md5 = require('create-hash/md5') -var RIPEMD160 = require('ripemd160') +Node.prototype._wrap = function wrap() { + var state = this._baseState; + methods.forEach(function(method) { + this[method] = function _wrappedMethod() { + var clone = new this.constructor(this); + state.children.push(clone); + return clone[method].apply(clone, arguments); + }; + }, this); +}; -var sha = require('sha.js') +Node.prototype._init = function init(body) { + var state = this._baseState; -var ZEROS = Buffer.alloc(128) + assert(state.parent === null); + body.call(this); -function Hmac (alg, key) { - Base.call(this, 'digest') - if (typeof key === 'string') { - key = Buffer.from(key) - } + // Filter children + state.children = state.children.filter(function(child) { + return child._baseState.parent === this; + }, this); + assert.equal(state.children.length, 1, 'Root node can have only one child'); +}; - var blocksize = (alg === 'sha512' || alg === 'sha384') ? 128 : 64 +Node.prototype._useArgs = function useArgs(args) { + var state = this._baseState; - this._alg = alg - this._key = key - if (key.length > blocksize) { - var hash = alg === 'rmd160' ? new RIPEMD160() : sha(alg) - key = hash.update(key).digest() - } else if (key.length < blocksize) { - key = Buffer.concat([key, ZEROS], blocksize) - } + // Filter children and args + var children = args.filter(function(arg) { + return arg instanceof this.constructor; + }, this); + args = args.filter(function(arg) { + return !(arg instanceof this.constructor); + }, this); - var ipad = this._ipad = Buffer.allocUnsafe(blocksize) - var opad = this._opad = Buffer.allocUnsafe(blocksize) + if (children.length !== 0) { + assert(state.children === null); + state.children = children; - for (var i = 0; i < blocksize; i++) { - ipad[i] = key[i] ^ 0x36 - opad[i] = key[i] ^ 0x5C + // Replace parent to maintain backward link + children.forEach(function(child) { + child._baseState.parent = this; + }, this); } - this._hash = alg === 'rmd160' ? new RIPEMD160() : sha(alg) - this._hash.update(ipad) -} + if (args.length !== 0) { + assert(state.args === null); + state.args = args; + state.reverseArgs = args.map(function(arg) { + if (typeof arg !== 'object' || arg.constructor !== Object) + return arg; -inherits(Hmac, Base) + var res = {}; + Object.keys(arg).forEach(function(key) { + if (key == (key | 0)) + key |= 0; + var value = arg[key]; + res[value] = key; + }); + return res; + }); + } +}; -Hmac.prototype._update = function (data) { - this._hash.update(data) -} +// +// Overrided methods +// -Hmac.prototype._final = function () { - var h = this._hash.digest() - var hash = this._alg === 'rmd160' ? new RIPEMD160() : sha(this._alg) - return hash.update(this._opad).update(h).digest() -} +overrided.forEach(function(method) { + Node.prototype[method] = function _overrided() { + var state = this._baseState; + throw new Error(method + ' not implemented for encoding: ' + state.enc); + }; +}); -module.exports = function createHmac (alg, key) { - alg = alg.toLowerCase() - if (alg === 'rmd160' || alg === 'ripemd160') { - return new Hmac('rmd160', key) - } - if (alg === 'md5') { - return new Legacy(md5, key) - } - return new Hmac(alg, key) -} +// +// Public methods +// -},{"./legacy":59,"cipher-base":53,"create-hash/md5":57,"inherits":104,"ripemd160":147,"safe-buffer":148,"sha.js":150}],59:[function(require,module,exports){ -'use strict' -var inherits = require('inherits') -var Buffer = require('safe-buffer').Buffer +tags.forEach(function(tag) { + Node.prototype[tag] = function _tagMethod() { + var state = this._baseState; + var args = Array.prototype.slice.call(arguments); -var Base = require('cipher-base') + assert(state.tag === null); + state.tag = tag; -var ZEROS = Buffer.alloc(128) -var blocksize = 64 + this._useArgs(args); -function Hmac (alg, key) { - Base.call(this, 'digest') - if (typeof key === 'string') { - key = Buffer.from(key) - } + return this; + }; +}); - this._alg = alg - this._key = key +Node.prototype.use = function use(item) { + assert(item); + var state = this._baseState; - if (key.length > blocksize) { - key = alg(key) - } else if (key.length < blocksize) { - key = Buffer.concat([key, ZEROS], blocksize) - } + assert(state.use === null); + state.use = item; - var ipad = this._ipad = Buffer.allocUnsafe(blocksize) - var opad = this._opad = Buffer.allocUnsafe(blocksize) + return this; +}; - for (var i = 0; i < blocksize; i++) { - ipad[i] = key[i] ^ 0x36 - opad[i] = key[i] ^ 0x5C - } +Node.prototype.optional = function optional() { + var state = this._baseState; - this._hash = [ipad] -} + state.optional = true; -inherits(Hmac, Base) + return this; +}; -Hmac.prototype._update = function (data) { - this._hash.push(data) -} +Node.prototype.def = function def(val) { + var state = this._baseState; -Hmac.prototype._final = function () { - var h = this._alg(Buffer.concat(this._hash)) - return this._alg(Buffer.concat([this._opad, h])) -} -module.exports = Hmac + assert(state['default'] === null); + state['default'] = val; + state.optional = true; -},{"cipher-base":53,"inherits":104,"safe-buffer":148}],60:[function(require,module,exports){ -'use strict' + return this; +}; -exports.randomBytes = exports.rng = exports.pseudoRandomBytes = exports.prng = require('randombytes') -exports.createHash = exports.Hash = require('create-hash') -exports.createHmac = exports.Hmac = require('create-hmac') +Node.prototype.explicit = function explicit(num) { + var state = this._baseState; -var algos = require('browserify-sign/algos') -var algoKeys = Object.keys(algos) -var hashes = ['sha1', 'sha224', 'sha256', 'sha384', 'sha512', 'md5', 'rmd160'].concat(algoKeys) -exports.getHashes = function () { - return hashes -} + assert(state.explicit === null && state.implicit === null); + state.explicit = num; -var p = require('pbkdf2') -exports.pbkdf2 = p.pbkdf2 -exports.pbkdf2Sync = p.pbkdf2Sync + return this; +}; -var aes = require('browserify-cipher') +Node.prototype.implicit = function implicit(num) { + var state = this._baseState; -exports.Cipher = aes.Cipher -exports.createCipher = aes.createCipher -exports.Cipheriv = aes.Cipheriv -exports.createCipheriv = aes.createCipheriv -exports.Decipher = aes.Decipher -exports.createDecipher = aes.createDecipher -exports.Decipheriv = aes.Decipheriv -exports.createDecipheriv = aes.createDecipheriv -exports.getCiphers = aes.getCiphers -exports.listCiphers = aes.listCiphers + assert(state.explicit === null && state.implicit === null); + state.implicit = num; -var dh = require('diffie-hellman') + return this; +}; -exports.DiffieHellmanGroup = dh.DiffieHellmanGroup -exports.createDiffieHellmanGroup = dh.createDiffieHellmanGroup -exports.getDiffieHellman = dh.getDiffieHellman -exports.createDiffieHellman = dh.createDiffieHellman -exports.DiffieHellman = dh.DiffieHellman +Node.prototype.obj = function obj() { + var state = this._baseState; + var args = Array.prototype.slice.call(arguments); -var sign = require('browserify-sign') + state.obj = true; -exports.createSign = sign.createSign -exports.Sign = sign.Sign -exports.createVerify = sign.createVerify -exports.Verify = sign.Verify + if (args.length !== 0) + this._useArgs(args); -exports.createECDH = require('create-ecdh') + return this; +}; -var publicEncrypt = require('public-encrypt') +Node.prototype.key = function key(newKey) { + var state = this._baseState; -exports.publicEncrypt = publicEncrypt.publicEncrypt -exports.privateEncrypt = publicEncrypt.privateEncrypt -exports.publicDecrypt = publicEncrypt.publicDecrypt -exports.privateDecrypt = publicEncrypt.privateDecrypt + assert(state.key === null); + state.key = newKey; -// the least I can do is make error messages for the rest of the node.js/crypto api. -// ;[ -// 'createCredentials' -// ].forEach(function (name) { -// exports[name] = function () { -// throw new Error([ -// 'sorry, ' + name + ' is not implemented yet', -// 'we accept pull requests', -// 'https://github.com/crypto-browserify/crypto-browserify' -// ].join('\n')) -// } -// }) + return this; +}; -var rf = require('randomfill') +Node.prototype.any = function any() { + var state = this._baseState; -exports.randomFill = rf.randomFill -exports.randomFillSync = rf.randomFillSync + state.any = true; -exports.createCredentials = function () { - throw new Error([ - 'sorry, createCredentials is not implemented yet', - 'we accept pull requests', - 'https://github.com/crypto-browserify/crypto-browserify' - ].join('\n')) -} + return this; +}; -exports.constants = { - 'DH_CHECK_P_NOT_SAFE_PRIME': 2, - 'DH_CHECK_P_NOT_PRIME': 1, - 'DH_UNABLE_TO_CHECK_GENERATOR': 4, - 'DH_NOT_SUITABLE_GENERATOR': 8, - 'NPN_ENABLED': 1, - 'ALPN_ENABLED': 1, - 'RSA_PKCS1_PADDING': 1, - 'RSA_SSLV23_PADDING': 2, - 'RSA_NO_PADDING': 3, - 'RSA_PKCS1_OAEP_PADDING': 4, - 'RSA_X931_PADDING': 5, - 'RSA_PKCS1_PSS_PADDING': 6, - 'POINT_CONVERSION_COMPRESSED': 2, - 'POINT_CONVERSION_UNCOMPRESSED': 4, - 'POINT_CONVERSION_HYBRID': 6 -} +Node.prototype.choice = function choice(obj) { + var state = this._baseState; -},{"browserify-cipher":40,"browserify-sign":47,"browserify-sign/algos":44,"create-ecdh":55,"create-hash":56,"create-hmac":58,"diffie-hellman":67,"pbkdf2":116,"public-encrypt":123,"randombytes":132,"randomfill":133}],61:[function(require,module,exports){ -'use strict'; + assert(state.choice === null); + state.choice = obj; + this._useArgs(Object.keys(obj).map(function(key) { + return obj[key]; + })); -exports.utils = require('./des/utils'); -exports.Cipher = require('./des/cipher'); -exports.DES = require('./des/des'); -exports.CBC = require('./des/cbc'); -exports.EDE = require('./des/ede'); + return this; +}; -},{"./des/cbc":62,"./des/cipher":63,"./des/des":64,"./des/ede":65,"./des/utils":66}],62:[function(require,module,exports){ -'use strict'; +Node.prototype.contains = function contains(item) { + var state = this._baseState; -var assert = require('minimalistic-assert'); -var inherits = require('inherits'); + assert(state.use === null); + state.contains = item; -var proto = {}; + return this; +}; -function CBCState(iv) { - assert.equal(iv.length, 8, 'Invalid IV length'); +// +// Decoding +// - this.iv = new Array(8); - for (var i = 0; i < this.iv.length; i++) - this.iv[i] = iv[i]; -} +Node.prototype._decode = function decode(input, options) { + var state = this._baseState; -function instantiate(Base) { - function CBC(options) { - Base.call(this, options); - this._cbcInit(); - } - inherits(CBC, Base); + // Decode root node + if (state.parent === null) + return input.wrapResult(state.children[0]._decode(input, options)); - var keys = Object.keys(proto); - for (var i = 0; i < keys.length; i++) { - var key = keys[i]; - CBC.prototype[key] = proto[key]; - } + var result = state['default']; + var present = true; - CBC.create = function create(options) { - return new CBC(options); - }; + var prevKey = null; + if (state.key !== null) + prevKey = input.enterKey(state.key); - return CBC; -} + // Check if tag is there + if (state.optional) { + var tag = null; + if (state.explicit !== null) + tag = state.explicit; + else if (state.implicit !== null) + tag = state.implicit; + else if (state.tag !== null) + tag = state.tag; -exports.instantiate = instantiate; + if (tag === null && !state.any) { + // Trial and Error + var save = input.save(); + try { + if (state.choice === null) + this._decodeGeneric(state.tag, input, options); + else + this._decodeChoice(input, options); + present = true; + } catch (e) { + present = false; + } + input.restore(save); + } else { + present = this._peekTag(input, tag, state.any); -proto._cbcInit = function _cbcInit() { - var state = new CBCState(this.options.iv); - this._cbcState = state; -}; + if (input.isError(present)) + return present; + } + } -proto._update = function _update(inp, inOff, out, outOff) { - var state = this._cbcState; - var superProto = this.constructor.super_.prototype; + // Push object on stack + var prevObj; + if (state.obj && present) + prevObj = input.enterObject(); - var iv = state.iv; - if (this.type === 'encrypt') { - for (var i = 0; i < this.blockSize; i++) - iv[i] ^= inp[inOff + i]; + if (present) { + // Unwrap explicit values + if (state.explicit !== null) { + var explicit = this._decodeTag(input, state.explicit); + if (input.isError(explicit)) + return explicit; + input = explicit; + } - superProto._update.call(this, iv, 0, out, outOff); + var start = input.offset; - for (var i = 0; i < this.blockSize; i++) - iv[i] = out[outOff + i]; - } else { - superProto._update.call(this, inp, inOff, out, outOff); + // Unwrap implicit and normal values + if (state.use === null && state.choice === null) { + if (state.any) + var save = input.save(); + var body = this._decodeTag( + input, + state.implicit !== null ? state.implicit : state.tag, + state.any + ); + if (input.isError(body)) + return body; - for (var i = 0; i < this.blockSize; i++) - out[outOff + i] ^= iv[i]; + if (state.any) + result = input.raw(save); + else + input = body; + } - for (var i = 0; i < this.blockSize; i++) - iv[i] = inp[inOff + i]; - } -}; + if (options && options.track && state.tag !== null) + options.track(input.path(), start, input.length, 'tagged'); -},{"inherits":104,"minimalistic-assert":109}],63:[function(require,module,exports){ -'use strict'; + if (options && options.track && state.tag !== null) + options.track(input.path(), input.offset, input.length, 'content'); -var assert = require('minimalistic-assert'); + // Select proper method for tag + if (state.any) + result = result; + else if (state.choice === null) + result = this._decodeGeneric(state.tag, input, options); + else + result = this._decodeChoice(input, options); -function Cipher(options) { - this.options = options; + if (input.isError(result)) + return result; - this.type = this.options.type; - this.blockSize = 8; - this._init(); + // Decode children + if (!state.any && state.choice === null && state.children !== null) { + state.children.forEach(function decodeChildren(child) { + // NOTE: We are ignoring errors here, to let parser continue with other + // parts of encoded data + child._decode(input, options); + }); + } - this.buffer = new Array(this.blockSize); - this.bufferOff = 0; -} -module.exports = Cipher; + // Decode contained/encoded by schema, only in bit or octet strings + if (state.contains && (state.tag === 'octstr' || state.tag === 'bitstr')) { + var data = new DecoderBuffer(result); + result = this._getUse(state.contains, input._reporterState.obj) + ._decode(data, options); + } + } -Cipher.prototype._init = function _init() { - // Might be overrided -}; + // Pop object + if (state.obj && present) + result = input.leaveObject(prevObj); -Cipher.prototype.update = function update(data) { - if (data.length === 0) - return []; + // Set key + if (state.key !== null && (result !== null || present === true)) + input.leaveKey(prevKey, state.key, result); + else if (prevKey !== null) + input.exitKey(prevKey); - if (this.type === 'decrypt') - return this._updateDecrypt(data); - else - return this._updateEncrypt(data); + return result; }; -Cipher.prototype._buffer = function _buffer(data, off) { - // Append data to buffer - var min = Math.min(this.buffer.length - this.bufferOff, data.length - off); - for (var i = 0; i < min; i++) - this.buffer[this.bufferOff + i] = data[off + i]; - this.bufferOff += min; +Node.prototype._decodeGeneric = function decodeGeneric(tag, input, options) { + var state = this._baseState; - // Shift next - return min; -}; + if (tag === 'seq' || tag === 'set') + return null; + if (tag === 'seqof' || tag === 'setof') + return this._decodeList(input, tag, state.args[0], options); + else if (/str$/.test(tag)) + return this._decodeStr(input, tag, options); + else if (tag === 'objid' && state.args) + return this._decodeObjid(input, state.args[0], state.args[1], options); + else if (tag === 'objid') + return this._decodeObjid(input, null, null, options); + else if (tag === 'gentime' || tag === 'utctime') + return this._decodeTime(input, tag, options); + else if (tag === 'null_') + return this._decodeNull(input, options); + else if (tag === 'bool') + return this._decodeBool(input, options); + else if (tag === 'objDesc') + return this._decodeStr(input, tag, options); + else if (tag === 'int' || tag === 'enum') + return this._decodeInt(input, state.args && state.args[0], options); -Cipher.prototype._flushBuffer = function _flushBuffer(out, off) { - this._update(this.buffer, 0, out, off); - this.bufferOff = 0; - return this.blockSize; + if (state.use !== null) { + return this._getUse(state.use, input._reporterState.obj) + ._decode(input, options); + } else { + return input.error('unknown tag: ' + tag); + } }; -Cipher.prototype._updateEncrypt = function _updateEncrypt(data) { - var inputOff = 0; - var outputOff = 0; - - var count = ((this.bufferOff + data.length) / this.blockSize) | 0; - var out = new Array(count * this.blockSize); - - if (this.bufferOff !== 0) { - inputOff += this._buffer(data, inputOff); - - if (this.bufferOff === this.buffer.length) - outputOff += this._flushBuffer(out, outputOff); - } +Node.prototype._getUse = function _getUse(entity, obj) { - // Write blocks - var max = data.length - ((data.length - inputOff) % this.blockSize); - for (; inputOff < max; inputOff += this.blockSize) { - this._update(data, inputOff, out, outputOff); - outputOff += this.blockSize; + var state = this._baseState; + // Create altered use decoder if implicit is set + state.useDecoder = this._use(entity, obj); + assert(state.useDecoder._baseState.parent === null); + state.useDecoder = state.useDecoder._baseState.children[0]; + if (state.implicit !== state.useDecoder._baseState.implicit) { + state.useDecoder = state.useDecoder.clone(); + state.useDecoder._baseState.implicit = state.implicit; } - - // Queue rest - for (; inputOff < data.length; inputOff++, this.bufferOff++) - this.buffer[this.bufferOff] = data[inputOff]; - - return out; + return state.useDecoder; }; -Cipher.prototype._updateDecrypt = function _updateDecrypt(data) { - var inputOff = 0; - var outputOff = 0; +Node.prototype._decodeChoice = function decodeChoice(input, options) { + var state = this._baseState; + var result = null; + var match = false; - var count = Math.ceil((this.bufferOff + data.length) / this.blockSize) - 1; - var out = new Array(count * this.blockSize); + Object.keys(state.choice).some(function(key) { + var save = input.save(); + var node = state.choice[key]; + try { + var value = node._decode(input, options); + if (input.isError(value)) + return false; - // TODO(indutny): optimize it, this is far from optimal - for (; count > 0; count--) { - inputOff += this._buffer(data, inputOff); - outputOff += this._flushBuffer(out, outputOff); - } + result = { type: key, value: value }; + match = true; + } catch (e) { + input.restore(save); + return false; + } + return true; + }, this); - // Buffer rest of the input - inputOff += this._buffer(data, inputOff); + if (!match) + return input.error('Choice not matched'); - return out; + return result; }; -Cipher.prototype.final = function final(buffer) { - var first; - if (buffer) - first = this.update(buffer); - - var last; - if (this.type === 'encrypt') - last = this._finalEncrypt(); - else - last = this._finalDecrypt(); +// +// Encoding +// - if (first) - return first.concat(last); - else - return last; +Node.prototype._createEncoderBuffer = function createEncoderBuffer(data) { + return new EncoderBuffer(data, this.reporter); }; -Cipher.prototype._pad = function _pad(buffer, off) { - if (off === 0) - return false; - - while (off < buffer.length) - buffer[off++] = 0; - - return true; -}; +Node.prototype._encode = function encode(data, reporter, parent) { + var state = this._baseState; + if (state['default'] !== null && state['default'] === data) + return; -Cipher.prototype._finalEncrypt = function _finalEncrypt() { - if (!this._pad(this.buffer, this.bufferOff)) - return []; + var result = this._encodeValue(data, reporter, parent); + if (result === undefined) + return; - var out = new Array(this.blockSize); - this._update(this.buffer, 0, out, 0); - return out; -}; + if (this._skipDefault(result, reporter, parent)) + return; -Cipher.prototype._unpad = function _unpad(buffer) { - return buffer; + return result; }; -Cipher.prototype._finalDecrypt = function _finalDecrypt() { - assert.equal(this.bufferOff, this.blockSize, 'Not enough data to decrypt'); - var out = new Array(this.blockSize); - this._flushBuffer(out, 0); +Node.prototype._encodeValue = function encode(data, reporter, parent) { + var state = this._baseState; - return this._unpad(out); -}; + // Decode root node + if (state.parent === null) + return state.children[0]._encode(data, reporter || new Reporter()); -},{"minimalistic-assert":109}],64:[function(require,module,exports){ -'use strict'; + var result = null; -var assert = require('minimalistic-assert'); -var inherits = require('inherits'); + // Set reporter to share it with a child class + this.reporter = reporter; -var des = require('../des'); -var utils = des.utils; -var Cipher = des.Cipher; + // Check if data is there + if (state.optional && data === undefined) { + if (state['default'] !== null) + data = state['default'] + else + return; + } -function DESState() { - this.tmp = new Array(2); - this.keys = null; -} + // Encode children first + var content = null; + var primitive = false; + if (state.any) { + // Anything that was given is translated to buffer + result = this._createEncoderBuffer(data); + } else if (state.choice) { + result = this._encodeChoice(data, reporter); + } else if (state.contains) { + content = this._getUse(state.contains, parent)._encode(data, reporter); + primitive = true; + } else if (state.children) { + content = state.children.map(function(child) { + if (child._baseState.tag === 'null_') + return child._encode(null, reporter, data); -function DES(options) { - Cipher.call(this, options); + if (child._baseState.key === null) + return reporter.error('Child should have a key'); + var prevKey = reporter.enterKey(child._baseState.key); - var state = new DESState(); - this._desState = state; + if (typeof data !== 'object') + return reporter.error('Child expected, but input is not object'); - this.deriveKeys(state, options.key); -} -inherits(DES, Cipher); -module.exports = DES; + var res = child._encode(data[child._baseState.key], reporter, data); + reporter.leaveKey(prevKey); -DES.create = function create(options) { - return new DES(options); -}; + return res; + }, this).filter(function(child) { + return child; + }); + content = this._createEncoderBuffer(content); + } else { + if (state.tag === 'seqof' || state.tag === 'setof') { + // TODO(indutny): this should be thrown on DSL level + if (!(state.args && state.args.length === 1)) + return reporter.error('Too many args for : ' + state.tag); -var shiftTable = [ - 1, 1, 2, 2, 2, 2, 2, 2, - 1, 2, 2, 2, 2, 2, 2, 1 -]; + if (!Array.isArray(data)) + return reporter.error('seqof/setof, but data is not Array'); -DES.prototype.deriveKeys = function deriveKeys(state, key) { - state.keys = new Array(16 * 2); + var child = this.clone(); + child._baseState.implicit = null; + content = this._createEncoderBuffer(data.map(function(item) { + var state = this._baseState; - assert.equal(key.length, this.blockSize, 'Invalid key length'); + return this._getUse(state.args[0], data)._encode(item, reporter); + }, child)); + } else if (state.use !== null) { + result = this._getUse(state.use, parent)._encode(data, reporter); + } else { + content = this._encodePrimitive(state.tag, data); + primitive = true; + } + } - var kL = utils.readUInt32BE(key, 0); - var kR = utils.readUInt32BE(key, 4); + // Encode data itself + var result; + if (!state.any && state.choice === null) { + var tag = state.implicit !== null ? state.implicit : state.tag; + var cls = state.implicit === null ? 'universal' : 'context'; - utils.pc1(kL, kR, state.tmp, 0); - kL = state.tmp[0]; - kR = state.tmp[1]; - for (var i = 0; i < state.keys.length; i += 2) { - var shift = shiftTable[i >>> 1]; - kL = utils.r28shl(kL, shift); - kR = utils.r28shl(kR, shift); - utils.pc2(kL, kR, state.keys, i); + if (tag === null) { + if (state.use === null) + reporter.error('Tag could be omitted only for .use()'); + } else { + if (state.use === null) + result = this._encodeComposite(tag, primitive, cls, content); + } } + + // Wrap in explicit + if (state.explicit !== null) + result = this._encodeComposite(state.explicit, false, 'context', result); + + return result; }; -DES.prototype._update = function _update(inp, inOff, out, outOff) { - var state = this._desState; +Node.prototype._encodeChoice = function encodeChoice(data, reporter) { + var state = this._baseState; - var l = utils.readUInt32BE(inp, inOff); - var r = utils.readUInt32BE(inp, inOff + 4); + var node = state.choice[data.type]; + if (!node) { + assert( + false, + data.type + ' not found in ' + + JSON.stringify(Object.keys(state.choice))); + } + return node._encode(data.value, reporter); +}; - // Initial Permutation - utils.ip(l, r, state.tmp, 0); - l = state.tmp[0]; - r = state.tmp[1]; +Node.prototype._encodePrimitive = function encodePrimitive(tag, data) { + var state = this._baseState; - if (this.type === 'encrypt') - this._encrypt(state, l, r, state.tmp, 0); + if (/str$/.test(tag)) + return this._encodeStr(data, tag); + else if (tag === 'objid' && state.args) + return this._encodeObjid(data, state.reverseArgs[0], state.args[1]); + else if (tag === 'objid') + return this._encodeObjid(data, null, null); + else if (tag === 'gentime' || tag === 'utctime') + return this._encodeTime(data, tag); + else if (tag === 'null_') + return this._encodeNull(); + else if (tag === 'int' || tag === 'enum') + return this._encodeInt(data, state.args && state.reverseArgs[0]); + else if (tag === 'bool') + return this._encodeBool(data); + else if (tag === 'objDesc') + return this._encodeStr(data, tag); else - this._decrypt(state, l, r, state.tmp, 0); + throw new Error('Unsupported tag: ' + tag); +}; - l = state.tmp[0]; - r = state.tmp[1]; +Node.prototype._isNumstr = function isNumstr(str) { + return /^[0-9 ]*$/.test(str); +}; - utils.writeUInt32BE(out, l, outOff); - utils.writeUInt32BE(out, r, outOff + 4); +Node.prototype._isPrintstr = function isPrintstr(str) { + return /^[A-Za-z0-9 '\(\)\+,\-\.\/:=\?]*$/.test(str); }; -DES.prototype._pad = function _pad(buffer, off) { - var value = buffer.length - off; - for (var i = off; i < buffer.length; i++) - buffer[i] = value; +},{"../base":50,"minimalistic-assert":159}],52:[function(require,module,exports){ +var inherits = require('inherits'); - return true; +function Reporter(options) { + this._reporterState = { + obj: null, + path: [], + options: options || {}, + errors: [] + }; +} +exports.Reporter = Reporter; + +Reporter.prototype.isError = function isError(obj) { + return obj instanceof ReporterError; }; -DES.prototype._unpad = function _unpad(buffer) { - var pad = buffer[buffer.length - 1]; - for (var i = buffer.length - pad; i < buffer.length; i++) - assert.equal(buffer[i], pad); +Reporter.prototype.save = function save() { + var state = this._reporterState; - return buffer.slice(0, buffer.length - pad); + return { obj: state.obj, pathLen: state.path.length }; }; -DES.prototype._encrypt = function _encrypt(state, lStart, rStart, out, off) { - var l = lStart; - var r = rStart; - - // Apply f() x16 times - for (var i = 0; i < state.keys.length; i += 2) { - var keyL = state.keys[i]; - var keyR = state.keys[i + 1]; - - // f(r, k) - utils.expand(r, state.tmp, 0); - - keyL ^= state.tmp[0]; - keyR ^= state.tmp[1]; - var s = utils.substitute(keyL, keyR); - var f = utils.permute(s); - - var t = r; - r = (l ^ f) >>> 0; - l = t; - } +Reporter.prototype.restore = function restore(data) { + var state = this._reporterState; - // Reverse Initial Permutation - utils.rip(r, l, out, off); + state.obj = data.obj; + state.path = state.path.slice(0, data.pathLen); }; -DES.prototype._decrypt = function _decrypt(state, lStart, rStart, out, off) { - var l = rStart; - var r = lStart; +Reporter.prototype.enterKey = function enterKey(key) { + return this._reporterState.path.push(key); +}; - // Apply f() x16 times - for (var i = state.keys.length - 2; i >= 0; i -= 2) { - var keyL = state.keys[i]; - var keyR = state.keys[i + 1]; +Reporter.prototype.exitKey = function exitKey(index) { + var state = this._reporterState; - // f(r, k) - utils.expand(l, state.tmp, 0); + state.path = state.path.slice(0, index - 1); +}; - keyL ^= state.tmp[0]; - keyR ^= state.tmp[1]; - var s = utils.substitute(keyL, keyR); - var f = utils.permute(s); +Reporter.prototype.leaveKey = function leaveKey(index, key, value) { + var state = this._reporterState; - var t = l; - l = (r ^ f) >>> 0; - r = t; - } + this.exitKey(index); + if (state.obj !== null) + state.obj[key] = value; +}; - // Reverse Initial Permutation - utils.rip(l, r, out, off); +Reporter.prototype.path = function path() { + return this._reporterState.path.join('/'); }; -},{"../des":61,"inherits":104,"minimalistic-assert":109}],65:[function(require,module,exports){ -'use strict'; +Reporter.prototype.enterObject = function enterObject() { + var state = this._reporterState; -var assert = require('minimalistic-assert'); -var inherits = require('inherits'); + var prev = state.obj; + state.obj = {}; + return prev; +}; -var des = require('../des'); -var Cipher = des.Cipher; -var DES = des.DES; +Reporter.prototype.leaveObject = function leaveObject(prev) { + var state = this._reporterState; -function EDEState(type, key) { - assert.equal(key.length, 24, 'Invalid key length'); + var now = state.obj; + state.obj = prev; + return now; +}; - var k1 = key.slice(0, 8); - var k2 = key.slice(8, 16); - var k3 = key.slice(16, 24); +Reporter.prototype.error = function error(msg) { + var err; + var state = this._reporterState; - if (type === 'encrypt') { - this.ciphers = [ - DES.create({ type: 'encrypt', key: k1 }), - DES.create({ type: 'decrypt', key: k2 }), - DES.create({ type: 'encrypt', key: k3 }) - ]; + var inherited = msg instanceof ReporterError; + if (inherited) { + err = msg; } else { - this.ciphers = [ - DES.create({ type: 'decrypt', key: k3 }), - DES.create({ type: 'encrypt', key: k2 }), - DES.create({ type: 'decrypt', key: k1 }) - ]; + err = new ReporterError(state.path.map(function(elem) { + return '[' + JSON.stringify(elem) + ']'; + }).join(''), msg.message || msg, msg.stack); } -} - -function EDE(options) { - Cipher.call(this, options); - - var state = new EDEState(this.type, this.options.key); - this._edeState = state; -} -inherits(EDE, Cipher); -module.exports = EDE; - -EDE.create = function create(options) { - return new EDE(options); -}; + if (!state.options.partial) + throw err; -EDE.prototype._update = function _update(inp, inOff, out, outOff) { - var state = this._edeState; + if (!inherited) + state.errors.push(err); - state.ciphers[0]._update(inp, inOff, out, outOff); - state.ciphers[1]._update(out, outOff, out, outOff); - state.ciphers[2]._update(out, outOff, out, outOff); + return err; }; -EDE.prototype._pad = DES.prototype._pad; -EDE.prototype._unpad = DES.prototype._unpad; - -},{"../des":61,"inherits":104,"minimalistic-assert":109}],66:[function(require,module,exports){ -'use strict'; +Reporter.prototype.wrapResult = function wrapResult(result) { + var state = this._reporterState; + if (!state.options.partial) + return result; -exports.readUInt32BE = function readUInt32BE(bytes, off) { - var res = (bytes[0 + off] << 24) | - (bytes[1 + off] << 16) | - (bytes[2 + off] << 8) | - bytes[3 + off]; - return res >>> 0; + return { + result: this.isError(result) ? null : result, + errors: state.errors + }; }; -exports.writeUInt32BE = function writeUInt32BE(bytes, value, off) { - bytes[0 + off] = value >>> 24; - bytes[1 + off] = (value >>> 16) & 0xff; - bytes[2 + off] = (value >>> 8) & 0xff; - bytes[3 + off] = value & 0xff; +function ReporterError(path, msg) { + this.path = path; + this.rethrow(msg); }; +inherits(ReporterError, Error); -exports.ip = function ip(inL, inR, out, off) { - var outL = 0; - var outR = 0; - - for (var i = 6; i >= 0; i -= 2) { - for (var j = 0; j <= 24; j += 8) { - outL <<= 1; - outL |= (inR >>> (j + i)) & 1; - } - for (var j = 0; j <= 24; j += 8) { - outL <<= 1; - outL |= (inL >>> (j + i)) & 1; - } - } +ReporterError.prototype.rethrow = function rethrow(msg) { + this.message = msg + ' at: ' + (this.path || '(shallow)'); + if (Error.captureStackTrace) + Error.captureStackTrace(this, ReporterError); - for (var i = 6; i >= 0; i -= 2) { - for (var j = 1; j <= 25; j += 8) { - outR <<= 1; - outR |= (inR >>> (j + i)) & 1; - } - for (var j = 1; j <= 25; j += 8) { - outR <<= 1; - outR |= (inL >>> (j + i)) & 1; + if (!this.stack) { + try { + // IE only adds stack when thrown + throw new Error(this.message); + } catch (e) { + this.stack = e.stack; } } - - out[off + 0] = outL >>> 0; - out[off + 1] = outR >>> 0; + return this; }; -exports.rip = function rip(inL, inR, out, off) { - var outL = 0; - var outR = 0; +},{"inherits":153}],53:[function(require,module,exports){ +var constants = require('../constants'); - for (var i = 0; i < 4; i++) { - for (var j = 24; j >= 0; j -= 8) { - outL <<= 1; - outL |= (inR >>> (j + i)) & 1; - outL <<= 1; - outL |= (inL >>> (j + i)) & 1; - } - } - for (var i = 4; i < 8; i++) { - for (var j = 24; j >= 0; j -= 8) { - outR <<= 1; - outR |= (inR >>> (j + i)) & 1; - outR <<= 1; - outR |= (inL >>> (j + i)) & 1; - } - } +exports.tagClass = { + 0: 'universal', + 1: 'application', + 2: 'context', + 3: 'private' +}; +exports.tagClassByName = constants._reverse(exports.tagClass); - out[off + 0] = outL >>> 0; - out[off + 1] = outR >>> 0; +exports.tag = { + 0x00: 'end', + 0x01: 'bool', + 0x02: 'int', + 0x03: 'bitstr', + 0x04: 'octstr', + 0x05: 'null_', + 0x06: 'objid', + 0x07: 'objDesc', + 0x08: 'external', + 0x09: 'real', + 0x0a: 'enum', + 0x0b: 'embed', + 0x0c: 'utf8str', + 0x0d: 'relativeOid', + 0x10: 'seq', + 0x11: 'set', + 0x12: 'numstr', + 0x13: 'printstr', + 0x14: 't61str', + 0x15: 'videostr', + 0x16: 'ia5str', + 0x17: 'utctime', + 0x18: 'gentime', + 0x19: 'graphstr', + 0x1a: 'iso646str', + 0x1b: 'genstr', + 0x1c: 'unistr', + 0x1d: 'charstr', + 0x1e: 'bmpstr' }; +exports.tagByName = constants._reverse(exports.tag); -exports.pc1 = function pc1(inL, inR, out, off) { - var outL = 0; - var outR = 0; +},{"../constants":54}],54:[function(require,module,exports){ +var constants = exports; - // 7, 15, 23, 31, 39, 47, 55, 63 - // 6, 14, 22, 30, 39, 47, 55, 63 - // 5, 13, 21, 29, 39, 47, 55, 63 - // 4, 12, 20, 28 - for (var i = 7; i >= 5; i--) { - for (var j = 0; j <= 24; j += 8) { - outL <<= 1; - outL |= (inR >> (j + i)) & 1; - } - for (var j = 0; j <= 24; j += 8) { - outL <<= 1; - outL |= (inL >> (j + i)) & 1; - } - } - for (var j = 0; j <= 24; j += 8) { - outL <<= 1; - outL |= (inR >> (j + i)) & 1; - } +// Helper +constants._reverse = function reverse(map) { + var res = {}; - // 1, 9, 17, 25, 33, 41, 49, 57 - // 2, 10, 18, 26, 34, 42, 50, 58 - // 3, 11, 19, 27, 35, 43, 51, 59 - // 36, 44, 52, 60 - for (var i = 1; i <= 3; i++) { - for (var j = 0; j <= 24; j += 8) { - outR <<= 1; - outR |= (inR >> (j + i)) & 1; - } - for (var j = 0; j <= 24; j += 8) { - outR <<= 1; - outR |= (inL >> (j + i)) & 1; - } - } - for (var j = 0; j <= 24; j += 8) { - outR <<= 1; - outR |= (inL >> (j + i)) & 1; - } + Object.keys(map).forEach(function(key) { + // Convert key to integer if it is stringified + if ((key | 0) == key) + key = key | 0; - out[off + 0] = outL >>> 0; - out[off + 1] = outR >>> 0; -}; + var value = map[key]; + res[value] = key; + }); -exports.r28shl = function r28shl(num, shift) { - return ((num << shift) & 0xfffffff) | (num >>> (28 - shift)); + return res; }; -var pc2table = [ - // inL => outL - 14, 11, 17, 4, 27, 23, 25, 0, - 13, 22, 7, 18, 5, 9, 16, 24, - 2, 20, 12, 21, 1, 8, 15, 26, +constants.der = require('./der'); - // inR => outR - 15, 4, 25, 19, 9, 1, 26, 16, - 5, 11, 23, 8, 12, 7, 17, 0, - 22, 3, 10, 14, 6, 20, 27, 24 -]; +},{"./der":53}],55:[function(require,module,exports){ +var inherits = require('inherits'); -exports.pc2 = function pc2(inL, inR, out, off) { - var outL = 0; - var outR = 0; +var asn1 = require('../../asn1'); +var base = asn1.base; +var bignum = asn1.bignum; - var len = pc2table.length >>> 1; - for (var i = 0; i < len; i++) { - outL <<= 1; - outL |= (inL >>> pc2table[i]) & 0x1; - } - for (var i = len; i < pc2table.length; i++) { - outR <<= 1; - outR |= (inR >>> pc2table[i]) & 0x1; - } +// Import DER constants +var der = asn1.constants.der; - out[off + 0] = outL >>> 0; - out[off + 1] = outR >>> 0; -}; +function DERDecoder(entity) { + this.enc = 'der'; + this.name = entity.name; + this.entity = entity; -exports.expand = function expand(r, out, off) { - var outL = 0; - var outR = 0; + // Construct base tree + this.tree = new DERNode(); + this.tree._init(entity.body); +}; +module.exports = DERDecoder; - outL = ((r & 1) << 5) | (r >>> 27); - for (var i = 23; i >= 15; i -= 4) { - outL <<= 6; - outL |= (r >>> i) & 0x3f; - } - for (var i = 11; i >= 3; i -= 4) { - outR |= (r >>> i) & 0x3f; - outR <<= 6; - } - outR |= ((r & 0x1f) << 1) | (r >>> 31); +DERDecoder.prototype.decode = function decode(data, options) { + if (!(data instanceof base.DecoderBuffer)) + data = new base.DecoderBuffer(data, options); - out[off + 0] = outL >>> 0; - out[off + 1] = outR >>> 0; + return this.tree._decode(data, options); }; -var sTable = [ - 14, 0, 4, 15, 13, 7, 1, 4, 2, 14, 15, 2, 11, 13, 8, 1, - 3, 10, 10, 6, 6, 12, 12, 11, 5, 9, 9, 5, 0, 3, 7, 8, - 4, 15, 1, 12, 14, 8, 8, 2, 13, 4, 6, 9, 2, 1, 11, 7, - 15, 5, 12, 11, 9, 3, 7, 14, 3, 10, 10, 0, 5, 6, 0, 13, +// Tree methods - 15, 3, 1, 13, 8, 4, 14, 7, 6, 15, 11, 2, 3, 8, 4, 14, - 9, 12, 7, 0, 2, 1, 13, 10, 12, 6, 0, 9, 5, 11, 10, 5, - 0, 13, 14, 8, 7, 10, 11, 1, 10, 3, 4, 15, 13, 4, 1, 2, - 5, 11, 8, 6, 12, 7, 6, 12, 9, 0, 3, 5, 2, 14, 15, 9, +function DERNode(parent) { + base.Node.call(this, 'der', parent); +} +inherits(DERNode, base.Node); - 10, 13, 0, 7, 9, 0, 14, 9, 6, 3, 3, 4, 15, 6, 5, 10, - 1, 2, 13, 8, 12, 5, 7, 14, 11, 12, 4, 11, 2, 15, 8, 1, - 13, 1, 6, 10, 4, 13, 9, 0, 8, 6, 15, 9, 3, 8, 0, 7, - 11, 4, 1, 15, 2, 14, 12, 3, 5, 11, 10, 5, 14, 2, 7, 12, +DERNode.prototype._peekTag = function peekTag(buffer, tag, any) { + if (buffer.isEmpty()) + return false; - 7, 13, 13, 8, 14, 11, 3, 5, 0, 6, 6, 15, 9, 0, 10, 3, - 1, 4, 2, 7, 8, 2, 5, 12, 11, 1, 12, 10, 4, 14, 15, 9, - 10, 3, 6, 15, 9, 0, 0, 6, 12, 10, 11, 1, 7, 13, 13, 8, - 15, 9, 1, 4, 3, 5, 14, 11, 5, 12, 2, 7, 8, 2, 4, 14, + var state = buffer.save(); + var decodedTag = derDecodeTag(buffer, 'Failed to peek tag: "' + tag + '"'); + if (buffer.isError(decodedTag)) + return decodedTag; - 2, 14, 12, 11, 4, 2, 1, 12, 7, 4, 10, 7, 11, 13, 6, 1, - 8, 5, 5, 0, 3, 15, 15, 10, 13, 3, 0, 9, 14, 8, 9, 6, - 4, 11, 2, 8, 1, 12, 11, 7, 10, 1, 13, 14, 7, 2, 8, 13, - 15, 6, 9, 15, 12, 0, 5, 9, 6, 10, 3, 4, 0, 5, 14, 3, + buffer.restore(state); - 12, 10, 1, 15, 10, 4, 15, 2, 9, 7, 2, 12, 6, 9, 8, 5, - 0, 6, 13, 1, 3, 13, 4, 14, 14, 0, 7, 11, 5, 3, 11, 8, - 9, 4, 14, 3, 15, 2, 5, 12, 2, 9, 8, 5, 12, 15, 3, 10, - 7, 11, 0, 14, 4, 1, 10, 7, 1, 6, 13, 0, 11, 8, 6, 13, + return decodedTag.tag === tag || decodedTag.tagStr === tag || + (decodedTag.tagStr + 'of') === tag || any; +}; - 4, 13, 11, 0, 2, 11, 14, 7, 15, 4, 0, 9, 8, 1, 13, 10, - 3, 14, 12, 3, 9, 5, 7, 12, 5, 2, 10, 15, 6, 8, 1, 6, - 1, 6, 4, 11, 11, 13, 13, 8, 12, 1, 3, 4, 7, 10, 14, 7, - 10, 9, 15, 5, 6, 0, 8, 15, 0, 14, 5, 2, 9, 3, 2, 12, +DERNode.prototype._decodeTag = function decodeTag(buffer, tag, any) { + var decodedTag = derDecodeTag(buffer, + 'Failed to decode tag of "' + tag + '"'); + if (buffer.isError(decodedTag)) + return decodedTag; - 13, 1, 2, 15, 8, 13, 4, 8, 6, 10, 15, 3, 11, 7, 1, 4, - 10, 12, 9, 5, 3, 6, 14, 11, 5, 0, 0, 14, 12, 9, 7, 2, - 7, 2, 11, 1, 4, 14, 1, 7, 9, 4, 12, 10, 14, 8, 2, 13, - 0, 15, 6, 12, 10, 9, 13, 0, 15, 3, 3, 5, 5, 6, 8, 11 -]; + var len = derDecodeLen(buffer, + decodedTag.primitive, + 'Failed to get length of "' + tag + '"'); -exports.substitute = function substitute(inL, inR) { - var out = 0; - for (var i = 0; i < 4; i++) { - var b = (inL >>> (18 - i * 6)) & 0x3f; - var sb = sTable[i * 0x40 + b]; + // Failure + if (buffer.isError(len)) + return len; - out <<= 4; - out |= sb; + if (!any && + decodedTag.tag !== tag && + decodedTag.tagStr !== tag && + decodedTag.tagStr + 'of' !== tag) { + return buffer.error('Failed to match tag: "' + tag + '"'); } - for (var i = 0; i < 4; i++) { - var b = (inR >>> (18 - i * 6)) & 0x3f; - var sb = sTable[4 * 0x40 + i * 0x40 + b]; - out <<= 4; - out |= sb; - } - return out >>> 0; + if (decodedTag.primitive || len !== null) + return buffer.skip(len, 'Failed to match body of: "' + tag + '"'); + + // Indefinite length... find END tag + var state = buffer.save(); + var res = this._skipUntilEnd( + buffer, + 'Failed to skip indefinite length body: "' + this.tag + '"'); + if (buffer.isError(res)) + return res; + + len = buffer.offset - state.offset; + buffer.restore(state); + return buffer.skip(len, 'Failed to match body of: "' + tag + '"'); }; -var permuteTable = [ - 16, 25, 12, 11, 3, 20, 4, 15, 31, 17, 9, 6, 27, 14, 1, 22, - 30, 24, 8, 18, 0, 5, 29, 23, 13, 19, 2, 26, 10, 21, 28, 7 -]; +DERNode.prototype._skipUntilEnd = function skipUntilEnd(buffer, fail) { + while (true) { + var tag = derDecodeTag(buffer, fail); + if (buffer.isError(tag)) + return tag; + var len = derDecodeLen(buffer, tag.primitive, fail); + if (buffer.isError(len)) + return len; -exports.permute = function permute(num) { - var out = 0; - for (var i = 0; i < permuteTable.length; i++) { - out <<= 1; - out |= (num >>> permuteTable[i]) & 0x1; + var res; + if (tag.primitive || len !== null) + res = buffer.skip(len) + else + res = this._skipUntilEnd(buffer, fail); + + // Failure + if (buffer.isError(res)) + return res; + + if (tag.tagStr === 'end') + break; } - return out >>> 0; }; -exports.padSplit = function padSplit(num, size, group) { - var str = num.toString(2); - while (str.length < size) - str = '0' + str; +DERNode.prototype._decodeList = function decodeList(buffer, tag, decoder, + options) { + var result = []; + while (!buffer.isEmpty()) { + var possibleEnd = this._peekTag(buffer, 'end'); + if (buffer.isError(possibleEnd)) + return possibleEnd; - var out = []; - for (var i = 0; i < size; i += group) - out.push(str.slice(i, i + group)); - return out.join(' '); + var res = decoder.decode(buffer, 'der', options); + if (buffer.isError(res) && possibleEnd) + break; + result.push(res); + } + return result; }; -},{}],67:[function(require,module,exports){ -(function (Buffer){ -var generatePrime = require('./lib/generatePrime') -var primes = require('./lib/primes.json') +DERNode.prototype._decodeStr = function decodeStr(buffer, tag) { + if (tag === 'bitstr') { + var unused = buffer.readUInt8(); + if (buffer.isError(unused)) + return unused; + return { unused: unused, data: buffer.raw() }; + } else if (tag === 'bmpstr') { + var raw = buffer.raw(); + if (raw.length % 2 === 1) + return buffer.error('Decoding of string type: bmpstr length mismatch'); -var DH = require('./lib/dh') + var str = ''; + for (var i = 0; i < raw.length / 2; i++) { + str += String.fromCharCode(raw.readUInt16BE(i * 2)); + } + return str; + } else if (tag === 'numstr') { + var numstr = buffer.raw().toString('ascii'); + if (!this._isNumstr(numstr)) { + return buffer.error('Decoding of string type: ' + + 'numstr unsupported characters'); + } + return numstr; + } else if (tag === 'octstr') { + return buffer.raw(); + } else if (tag === 'objDesc') { + return buffer.raw(); + } else if (tag === 'printstr') { + var printstr = buffer.raw().toString('ascii'); + if (!this._isPrintstr(printstr)) { + return buffer.error('Decoding of string type: ' + + 'printstr unsupported characters'); + } + return printstr; + } else if (/str$/.test(tag)) { + return buffer.raw().toString(); + } else { + return buffer.error('Decoding of string type: ' + tag + ' unsupported'); + } +}; -function getDiffieHellman (mod) { - var prime = new Buffer(primes[mod].prime, 'hex') - var gen = new Buffer(primes[mod].gen, 'hex') +DERNode.prototype._decodeObjid = function decodeObjid(buffer, values, relative) { + var result; + var identifiers = []; + var ident = 0; + while (!buffer.isEmpty()) { + var subident = buffer.readUInt8(); + ident <<= 7; + ident |= subident & 0x7f; + if ((subident & 0x80) === 0) { + identifiers.push(ident); + ident = 0; + } + } + if (subident & 0x80) + identifiers.push(ident); - return new DH(prime, gen) -} + var first = (identifiers[0] / 40) | 0; + var second = identifiers[0] % 40; -var ENCODINGS = { - 'binary': true, 'hex': true, 'base64': true -} + if (relative) + result = identifiers; + else + result = [first, second].concat(identifiers.slice(1)); -function createDiffieHellman (prime, enc, generator, genc) { - if (Buffer.isBuffer(enc) || ENCODINGS[enc] === undefined) { - return createDiffieHellman(prime, 'binary', enc, generator) + if (values) { + var tmp = values[result.join(' ')]; + if (tmp === undefined) + tmp = values[result.join('.')]; + if (tmp !== undefined) + result = tmp; } - enc = enc || 'binary' - genc = genc || 'binary' - generator = generator || new Buffer([2]) + return result; +}; - if (!Buffer.isBuffer(generator)) { - generator = new Buffer(generator, genc) +DERNode.prototype._decodeTime = function decodeTime(buffer, tag) { + var str = buffer.raw().toString(); + if (tag === 'gentime') { + var year = str.slice(0, 4) | 0; + var mon = str.slice(4, 6) | 0; + var day = str.slice(6, 8) | 0; + var hour = str.slice(8, 10) | 0; + var min = str.slice(10, 12) | 0; + var sec = str.slice(12, 14) | 0; + } else if (tag === 'utctime') { + var year = str.slice(0, 2) | 0; + var mon = str.slice(2, 4) | 0; + var day = str.slice(4, 6) | 0; + var hour = str.slice(6, 8) | 0; + var min = str.slice(8, 10) | 0; + var sec = str.slice(10, 12) | 0; + if (year < 70) + year = 2000 + year; + else + year = 1900 + year; + } else { + return buffer.error('Decoding ' + tag + ' time is not supported yet'); } - if (typeof prime === 'number') { - return new DH(generatePrime(prime, generator), generator, true) - } + return Date.UTC(year, mon - 1, day, hour, min, sec, 0); +}; - if (!Buffer.isBuffer(prime)) { - prime = new Buffer(prime, enc) - } +DERNode.prototype._decodeNull = function decodeNull(buffer) { + return null; +}; - return new DH(prime, generator, true) -} +DERNode.prototype._decodeBool = function decodeBool(buffer) { + var res = buffer.readUInt8(); + if (buffer.isError(res)) + return res; + else + return res !== 0; +}; -exports.DiffieHellmanGroup = exports.createDiffieHellmanGroup = exports.getDiffieHellman = getDiffieHellman -exports.createDiffieHellman = exports.DiffieHellman = createDiffieHellman +DERNode.prototype._decodeInt = function decodeInt(buffer, values) { + // Bigint, return as it is (assume big endian) + var raw = buffer.raw(); + var res = new bignum(raw); -}).call(this,require("buffer").Buffer) -},{"./lib/dh":68,"./lib/generatePrime":69,"./lib/primes.json":70,"buffer":52}],68:[function(require,module,exports){ -(function (Buffer){ -var BN = require('bn.js'); -var MillerRabin = require('miller-rabin'); -var millerRabin = new MillerRabin(); -var TWENTYFOUR = new BN(24); -var ELEVEN = new BN(11); -var TEN = new BN(10); -var THREE = new BN(3); -var SEVEN = new BN(7); -var primes = require('./generatePrime'); -var randomBytes = require('randombytes'); -module.exports = DH; + if (values) + res = values[res.toString(10)] || res; -function setPublicKey(pub, enc) { - enc = enc || 'utf8'; - if (!Buffer.isBuffer(pub)) { - pub = new Buffer(pub, enc); - } - this._pub = new BN(pub); - return this; -} + return res; +}; -function setPrivateKey(priv, enc) { - enc = enc || 'utf8'; - if (!Buffer.isBuffer(priv)) { - priv = new Buffer(priv, enc); - } - this._priv = new BN(priv); - return this; -} +DERNode.prototype._use = function use(entity, obj) { + if (typeof entity === 'function') + entity = entity(obj); + return entity._getDecoder('der').tree; +}; -var primeCache = {}; -function checkPrime(prime, generator) { - var gen = generator.toString('hex'); - var hex = [gen, prime.toString(16)].join('_'); - if (hex in primeCache) { - return primeCache[hex]; - } - var error = 0; +// Utility methods - if (prime.isEven() || - !primes.simpleSieve || - !primes.fermatTest(prime) || - !millerRabin.test(prime)) { - //not a prime so +1 - error += 1; +function derDecodeTag(buf, fail) { + var tag = buf.readUInt8(fail); + if (buf.isError(tag)) + return tag; - if (gen === '02' || gen === '05') { - // we'd be able to check the generator - // it would fail so +8 - error += 8; - } else { - //we wouldn't be able to test the generator - // so +4 - error += 4; - } - primeCache[hex] = error; - return error; - } - if (!millerRabin.test(prime.shrn(1))) { - //not a safe prime - error += 2; - } - var rem; - switch (gen) { - case '02': - if (prime.mod(TWENTYFOUR).cmp(ELEVEN)) { - // unsuidable generator - error += 8; - } - break; - case '05': - rem = prime.mod(TEN); - if (rem.cmp(THREE) && rem.cmp(SEVEN)) { - // prime mod 10 needs to equal 3 or 7 - error += 8; - } - break; - default: - error += 4; - } - primeCache[hex] = error; - return error; -} + var cls = der.tagClass[tag >> 6]; + var primitive = (tag & 0x20) === 0; -function DH(prime, generator, malleable) { - this.setGenerator(generator); - this.__prime = new BN(prime); - this._prime = BN.mont(this.__prime); - this._primeLen = prime.length; - this._pub = undefined; - this._priv = undefined; - this._primeCode = undefined; - if (malleable) { - this.setPublicKey = setPublicKey; - this.setPrivateKey = setPrivateKey; - } else { - this._primeCode = 8; - } -} -Object.defineProperty(DH.prototype, 'verifyError', { - enumerable: true, - get: function () { - if (typeof this._primeCode !== 'number') { - this._primeCode = checkPrime(this.__prime, this.__gen); + // Multi-octet tag - load + if ((tag & 0x1f) === 0x1f) { + var oct = tag; + tag = 0; + while ((oct & 0x80) === 0x80) { + oct = buf.readUInt8(fail); + if (buf.isError(oct)) + return oct; + + tag <<= 7; + tag |= oct & 0x7f; } - return this._primeCode; - } -}); -DH.prototype.generateKeys = function () { - if (!this._priv) { - this._priv = new BN(randomBytes(this._primeLen)); + } else { + tag &= 0x1f; } - this._pub = this._gen.toRed(this._prime).redPow(this._priv).fromRed(); - return this.getPublicKey(); -}; + var tagStr = der.tag[tag]; -DH.prototype.computeSecret = function (other) { - other = new BN(other); - other = other.toRed(this._prime); - var secret = other.redPow(this._priv).fromRed(); - var out = new Buffer(secret.toArray()); - var prime = this.getPrime(); - if (out.length < prime.length) { - var front = new Buffer(prime.length - out.length); - front.fill(0); - out = Buffer.concat([front, out]); - } - return out; -}; + return { + cls: cls, + primitive: primitive, + tag: tag, + tagStr: tagStr + }; +} -DH.prototype.getPublicKey = function getPublicKey(enc) { - return formatReturnValue(this._pub, enc); -}; +function derDecodeLen(buf, primitive, fail) { + var len = buf.readUInt8(fail); + if (buf.isError(len)) + return len; -DH.prototype.getPrivateKey = function getPrivateKey(enc) { - return formatReturnValue(this._priv, enc); -}; + // Indefinite form + if (!primitive && len === 0x80) + return null; -DH.prototype.getPrime = function (enc) { - return formatReturnValue(this.__prime, enc); -}; + // Definite form + if ((len & 0x80) === 0) { + // Short form + return len; + } -DH.prototype.getGenerator = function (enc) { - return formatReturnValue(this._gen, enc); -}; + // Long form + var num = len & 0x7f; + if (num > 4) + return buf.error('length octect is too long'); -DH.prototype.setGenerator = function (gen, enc) { - enc = enc || 'utf8'; - if (!Buffer.isBuffer(gen)) { - gen = new Buffer(gen, enc); + len = 0; + for (var i = 0; i < num; i++) { + len <<= 8; + var j = buf.readUInt8(fail); + if (buf.isError(j)) + return j; + len |= j; } - this.__gen = gen; - this._gen = new BN(gen); - return this; -}; -function formatReturnValue(bn, enc) { - var buf = new Buffer(bn.toArray()); - if (!enc) { - return buf; - } else { - return buf.toString(enc); - } + return len; } -}).call(this,require("buffer").Buffer) -},{"./generatePrime":69,"bn.js":20,"buffer":52,"miller-rabin":108,"randombytes":132}],69:[function(require,module,exports){ -var randomBytes = require('randombytes'); -module.exports = findPrime; -findPrime.simpleSieve = simpleSieve; -findPrime.fermatTest = fermatTest; -var BN = require('bn.js'); -var TWENTYFOUR = new BN(24); -var MillerRabin = require('miller-rabin'); -var millerRabin = new MillerRabin(); -var ONE = new BN(1); -var TWO = new BN(2); -var FIVE = new BN(5); -var SIXTEEN = new BN(16); -var EIGHT = new BN(8); -var TEN = new BN(10); -var THREE = new BN(3); -var SEVEN = new BN(7); -var ELEVEN = new BN(11); -var FOUR = new BN(4); -var TWELVE = new BN(12); -var primes = null; +},{"../../asn1":47,"inherits":153}],56:[function(require,module,exports){ +var decoders = exports; -function _getPrimes() { - if (primes !== null) - return primes; +decoders.der = require('./der'); +decoders.pem = require('./pem'); - var limit = 0x100000; - var res = []; - res[0] = 2; - for (var i = 1, k = 3; k < limit; k += 2) { - var sqrt = Math.ceil(Math.sqrt(k)); - for (var j = 0; j < i && res[j] <= sqrt; j++) - if (k % res[j] === 0) - break; +},{"./der":55,"./pem":57}],57:[function(require,module,exports){ +var inherits = require('inherits'); +var Buffer = require('buffer').Buffer; - if (i !== j && res[j] <= sqrt) - continue; +var DERDecoder = require('./der'); - res[i++] = k; - } - primes = res; - return res; -} +function PEMDecoder(entity) { + DERDecoder.call(this, entity); + this.enc = 'pem'; +}; +inherits(PEMDecoder, DERDecoder); +module.exports = PEMDecoder; -function simpleSieve(p) { - var primes = _getPrimes(); +PEMDecoder.prototype.decode = function decode(data, options) { + var lines = data.toString().split(/[\r\n]+/g); - for (var i = 0; i < primes.length; i++) - if (p.modn(primes[i]) === 0) { - if (p.cmpn(primes[i]) === 0) { - return true; - } else { - return false; - } - } + var label = options.label.toUpperCase(); - return true; -} + var re = /^-----(BEGIN|END) ([^-]+)-----$/; + var start = -1; + var end = -1; + for (var i = 0; i < lines.length; i++) { + var match = lines[i].match(re); + if (match === null) + continue; -function fermatTest(p) { - var red = BN.mont(p); - return TWO.toRed(red).redPow(p.subn(1)).fromRed().cmpn(1) === 0; -} + if (match[2] !== label) + continue; -function findPrime(bits, gen) { - if (bits < 16) { - // this is what openssl does - if (gen === 2 || gen === 5) { - return new BN([0x8c, 0x7b]); + if (start === -1) { + if (match[1] !== 'BEGIN') + break; + start = i; } else { - return new BN([0x8c, 0x27]); + if (match[1] !== 'END') + break; + end = i; + break; } } - gen = new BN(gen); + if (start === -1 || end === -1) + throw new Error('PEM section not found for: ' + label); - var num, n2; + var base64 = lines.slice(start + 1, end).join(''); + // Remove excessive symbols + base64.replace(/[^a-z0-9\+\/=]+/gi, ''); - while (true) { - num = new BN(randomBytes(Math.ceil(bits / 8))); - while (num.bitLength() > bits) { - num.ishrn(1); - } - if (num.isEven()) { - num.iadd(ONE); - } - if (!num.testn(1)) { - num.iadd(TWO); - } - if (!gen.cmp(TWO)) { - while (num.mod(TWENTYFOUR).cmp(ELEVEN)) { - num.iadd(FOUR); - } - } else if (!gen.cmp(FIVE)) { - while (num.mod(TEN).cmp(THREE)) { - num.iadd(FOUR); - } - } - n2 = num.shrn(1); - if (simpleSieve(n2) && simpleSieve(num) && - fermatTest(n2) && fermatTest(num) && - millerRabin.test(n2) && millerRabin.test(num)) { - return num; - } - } + var input = new Buffer(base64, 'base64'); + return DERDecoder.prototype.decode.call(this, input, options); +}; + +},{"./der":55,"buffer":100,"inherits":153}],58:[function(require,module,exports){ +var inherits = require('inherits'); +var Buffer = require('buffer').Buffer; + +var asn1 = require('../../asn1'); +var base = asn1.base; + +// Import DER constants +var der = asn1.constants.der; + +function DEREncoder(entity) { + this.enc = 'der'; + this.name = entity.name; + this.entity = entity; + + // Construct base tree + this.tree = new DERNode(); + this.tree._init(entity.body); +}; +module.exports = DEREncoder; + +DEREncoder.prototype.encode = function encode(data, reporter) { + return this.tree._encode(data, reporter).join(); +}; + +// Tree methods +function DERNode(parent) { + base.Node.call(this, 'der', parent); } +inherits(DERNode, base.Node); -},{"bn.js":20,"miller-rabin":108,"randombytes":132}],70:[function(require,module,exports){ -module.exports={ - "modp1": { - "gen": "02", - "prime": "ffffffffffffffffc90fdaa22168c234c4c6628b80dc1cd129024e088a67cc74020bbea63b139b22514a08798e3404ddef9519b3cd3a431b302b0a6df25f14374fe1356d6d51c245e485b576625e7ec6f44c42e9a63a3620ffffffffffffffff" - }, - "modp2": { - "gen": "02", - "prime": "ffffffffffffffffc90fdaa22168c234c4c6628b80dc1cd129024e088a67cc74020bbea63b139b22514a08798e3404ddef9519b3cd3a431b302b0a6df25f14374fe1356d6d51c245e485b576625e7ec6f44c42e9a637ed6b0bff5cb6f406b7edee386bfb5a899fa5ae9f24117c4b1fe649286651ece65381ffffffffffffffff" - }, - "modp5": { - "gen": "02", - "prime": "ffffffffffffffffc90fdaa22168c234c4c6628b80dc1cd129024e088a67cc74020bbea63b139b22514a08798e3404ddef9519b3cd3a431b302b0a6df25f14374fe1356d6d51c245e485b576625e7ec6f44c42e9a637ed6b0bff5cb6f406b7edee386bfb5a899fa5ae9f24117c4b1fe649286651ece45b3dc2007cb8a163bf0598da48361c55d39a69163fa8fd24cf5f83655d23dca3ad961c62f356208552bb9ed529077096966d670c354e4abc9804f1746c08ca237327ffffffffffffffff" - }, - "modp14": { - "gen": "02", - "prime": "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" - }, - "modp15": { - "gen": "02", - "prime": "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" - }, - "modp16": { - "gen": "02", - "prime": "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" - }, - "modp17": { - "gen": "02", - "prime": "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" - }, - "modp18": { - "gen": "02", - "prime": "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" - } -} -},{}],71:[function(require,module,exports){ -'use strict'; - -var elliptic = exports; - -elliptic.version = require('../package.json').version; -elliptic.utils = require('./elliptic/utils'); -elliptic.rand = require('brorand'); -elliptic.curve = require('./elliptic/curve'); -elliptic.curves = require('./elliptic/curves'); - -// Protocols -elliptic.ec = require('./elliptic/ec'); -elliptic.eddsa = require('./elliptic/eddsa'); - -},{"../package.json":86,"./elliptic/curve":74,"./elliptic/curves":77,"./elliptic/ec":78,"./elliptic/eddsa":81,"./elliptic/utils":85,"brorand":21}],72:[function(require,module,exports){ -'use strict'; - -var BN = require('bn.js'); -var elliptic = require('../../elliptic'); -var utils = elliptic.utils; -var getNAF = utils.getNAF; -var getJSF = utils.getJSF; -var assert = utils.assert; +DERNode.prototype._encodeComposite = function encodeComposite(tag, + primitive, + cls, + content) { + var encodedTag = encodeTag(tag, primitive, cls, this.reporter); -function BaseCurve(type, conf) { - this.type = type; - this.p = new BN(conf.p, 16); + // Short form + if (content.length < 0x80) { + var header = new Buffer(2); + header[0] = encodedTag; + header[1] = content.length; + return this._createEncoderBuffer([ header, content ]); + } - // Use Montgomery, when there is no fast reduction for the prime - this.red = conf.prime ? BN.red(conf.prime) : BN.mont(this.p); + // Long form + // Count octets required to store length + var lenOctets = 1; + for (var i = content.length; i >= 0x100; i >>= 8) + lenOctets++; - // Useful for many curves - this.zero = new BN(0).toRed(this.red); - this.one = new BN(1).toRed(this.red); - this.two = new BN(2).toRed(this.red); + var header = new Buffer(1 + 1 + lenOctets); + header[0] = encodedTag; + header[1] = 0x80 | lenOctets; - // Curve configuration, optional - this.n = conf.n && new BN(conf.n, 16); - this.g = conf.g && this.pointFromJSON(conf.g, conf.gRed); + for (var i = 1 + lenOctets, j = content.length; j > 0; i--, j >>= 8) + header[i] = j & 0xff; - // Temporary arrays - this._wnafT1 = new Array(4); - this._wnafT2 = new Array(4); - this._wnafT3 = new Array(4); - this._wnafT4 = new Array(4); + return this._createEncoderBuffer([ header, content ]); +}; - // Generalized Greg Maxwell's trick - var adjustCount = this.n && this.p.div(this.n); - if (!adjustCount || adjustCount.cmpn(100) > 0) { - this.redN = null; +DERNode.prototype._encodeStr = function encodeStr(str, tag) { + if (tag === 'bitstr') { + return this._createEncoderBuffer([ str.unused | 0, str.data ]); + } else if (tag === 'bmpstr') { + var buf = new Buffer(str.length * 2); + for (var i = 0; i < str.length; i++) { + buf.writeUInt16BE(str.charCodeAt(i), i * 2); + } + return this._createEncoderBuffer(buf); + } else if (tag === 'numstr') { + if (!this._isNumstr(str)) { + return this.reporter.error('Encoding of string type: numstr supports ' + + 'only digits and space'); + } + return this._createEncoderBuffer(str); + } else if (tag === 'printstr') { + if (!this._isPrintstr(str)) { + return this.reporter.error('Encoding of string type: printstr supports ' + + 'only latin upper and lower case letters, ' + + 'digits, space, apostrophe, left and rigth ' + + 'parenthesis, plus sign, comma, hyphen, ' + + 'dot, slash, colon, equal sign, ' + + 'question mark'); + } + return this._createEncoderBuffer(str); + } else if (/str$/.test(tag)) { + return this._createEncoderBuffer(str); + } else if (tag === 'objDesc') { + return this._createEncoderBuffer(str); } else { - this._maxwellTrick = true; - this.redN = this.n.toRed(this.red); + return this.reporter.error('Encoding of string type: ' + tag + + ' unsupported'); } -} -module.exports = BaseCurve; - -BaseCurve.prototype.point = function point() { - throw new Error('Not implemented'); -}; - -BaseCurve.prototype.validate = function validate() { - throw new Error('Not implemented'); }; -BaseCurve.prototype._fixedNafMul = function _fixedNafMul(p, k) { - assert(p.precomputed); - var doubles = p._getDoubles(); +DERNode.prototype._encodeObjid = function encodeObjid(id, values, relative) { + if (typeof id === 'string') { + if (!values) + return this.reporter.error('string objid given, but no values map found'); + if (!values.hasOwnProperty(id)) + return this.reporter.error('objid not found in values map'); + id = values[id].split(/[\s\.]+/g); + for (var i = 0; i < id.length; i++) + id[i] |= 0; + } else if (Array.isArray(id)) { + id = id.slice(); + for (var i = 0; i < id.length; i++) + id[i] |= 0; + } - var naf = getNAF(k, 1); - var I = (1 << (doubles.step + 1)) - (doubles.step % 2 === 0 ? 2 : 1); - I /= 3; + if (!Array.isArray(id)) { + return this.reporter.error('objid() should be either array or string, ' + + 'got: ' + JSON.stringify(id)); + } - // Translate into more windowed form - var repr = []; - for (var j = 0; j < naf.length; j += doubles.step) { - var nafW = 0; - for (var k = j + doubles.step - 1; k >= j; k--) - nafW = (nafW << 1) + naf[k]; - repr.push(nafW); + if (!relative) { + if (id[1] >= 40) + return this.reporter.error('Second objid identifier OOB'); + id.splice(0, 2, id[0] * 40 + id[1]); } - var a = this.jpoint(null, null, null); - var b = this.jpoint(null, null, null); - for (var i = I; i > 0; i--) { - for (var j = 0; j < repr.length; j++) { - var nafW = repr[j]; - if (nafW === i) - b = b.mixedAdd(doubles.points[j]); - else if (nafW === -i) - b = b.mixedAdd(doubles.points[j].neg()); - } - a = a.add(b); + // Count number of octets + var size = 0; + for (var i = 0; i < id.length; i++) { + var ident = id[i]; + for (size++; ident >= 0x80; ident >>= 7) + size++; } - return a.toP(); -}; -BaseCurve.prototype._wnafMul = function _wnafMul(p, k) { - var w = 4; + var objid = new Buffer(size); + var offset = objid.length - 1; + for (var i = id.length - 1; i >= 0; i--) { + var ident = id[i]; + objid[offset--] = ident & 0x7f; + while ((ident >>= 7) > 0) + objid[offset--] = 0x80 | (ident & 0x7f); + } - // Precompute window - var nafPoints = p._getNAFPoints(w); - w = nafPoints.wnd; - var wnd = nafPoints.points; + return this._createEncoderBuffer(objid); +}; - // Get NAF form - var naf = getNAF(k, w); +function two(num) { + if (num < 10) + return '0' + num; + else + return num; +} - // Add `this`*(N+1) for every w-NAF index - var acc = this.jpoint(null, null, null); - for (var i = naf.length - 1; i >= 0; i--) { - // Count zeroes - for (var k = 0; i >= 0 && naf[i] === 0; i--) - k++; - if (i >= 0) - k++; - acc = acc.dblp(k); +DERNode.prototype._encodeTime = function encodeTime(time, tag) { + var str; + var date = new Date(time); - if (i < 0) - break; - var z = naf[i]; - assert(z !== 0); - if (p.type === 'affine') { - // J +- P - if (z > 0) - acc = acc.mixedAdd(wnd[(z - 1) >> 1]); - else - acc = acc.mixedAdd(wnd[(-z - 1) >> 1].neg()); - } else { - // J +- J - if (z > 0) - acc = acc.add(wnd[(z - 1) >> 1]); - else - acc = acc.add(wnd[(-z - 1) >> 1].neg()); - } + if (tag === 'gentime') { + str = [ + two(date.getFullYear()), + two(date.getUTCMonth() + 1), + two(date.getUTCDate()), + two(date.getUTCHours()), + two(date.getUTCMinutes()), + two(date.getUTCSeconds()), + 'Z' + ].join(''); + } else if (tag === 'utctime') { + str = [ + two(date.getFullYear() % 100), + two(date.getUTCMonth() + 1), + two(date.getUTCDate()), + two(date.getUTCHours()), + two(date.getUTCMinutes()), + two(date.getUTCSeconds()), + 'Z' + ].join(''); + } else { + this.reporter.error('Encoding ' + tag + ' time is not supported yet'); } - return p.type === 'affine' ? acc.toP() : acc; -}; -BaseCurve.prototype._wnafMulAdd = function _wnafMulAdd(defW, - points, - coeffs, - len, - jacobianResult) { - var wndWidth = this._wnafT1; - var wnd = this._wnafT2; - var naf = this._wnafT3; + return this._encodeStr(str, 'octstr'); +}; - // Fill all arrays - var max = 0; - for (var i = 0; i < len; i++) { - var p = points[i]; - var nafPoints = p._getNAFPoints(defW); - wndWidth[i] = nafPoints.wnd; - wnd[i] = nafPoints.points; - } +DERNode.prototype._encodeNull = function encodeNull() { + return this._createEncoderBuffer(''); +}; - // Comb small window NAFs - for (var i = len - 1; i >= 1; i -= 2) { - var a = i - 1; - var b = i; - if (wndWidth[a] !== 1 || wndWidth[b] !== 1) { - naf[a] = getNAF(coeffs[a], wndWidth[a]); - naf[b] = getNAF(coeffs[b], wndWidth[b]); - max = Math.max(naf[a].length, max); - max = Math.max(naf[b].length, max); - continue; +DERNode.prototype._encodeInt = function encodeInt(num, values) { + if (typeof num === 'string') { + if (!values) + return this.reporter.error('String int or enum given, but no values map'); + if (!values.hasOwnProperty(num)) { + return this.reporter.error('Values map doesn\'t contain: ' + + JSON.stringify(num)); } + num = values[num]; + } - var comb = [ - points[a], /* 1 */ - null, /* 3 */ - null, /* 5 */ - points[b] /* 7 */ - ]; - - // Try to avoid Projective points, if possible - if (points[a].y.cmp(points[b].y) === 0) { - comb[1] = points[a].add(points[b]); - comb[2] = points[a].toJ().mixedAdd(points[b].neg()); - } else if (points[a].y.cmp(points[b].y.redNeg()) === 0) { - comb[1] = points[a].toJ().mixedAdd(points[b]); - comb[2] = points[a].add(points[b].neg()); - } else { - comb[1] = points[a].toJ().mixedAdd(points[b]); - comb[2] = points[a].toJ().mixedAdd(points[b].neg()); + // Bignum, assume big endian + if (typeof num !== 'number' && !Buffer.isBuffer(num)) { + var numArray = num.toArray(); + if (!num.sign && numArray[0] & 0x80) { + numArray.unshift(0); } + num = new Buffer(numArray); + } - var index = [ - -3, /* -1 -1 */ - -1, /* -1 0 */ - -5, /* -1 1 */ - -7, /* 0 -1 */ - 0, /* 0 0 */ - 7, /* 0 1 */ - 5, /* 1 -1 */ - 1, /* 1 0 */ - 3 /* 1 1 */ - ]; - - var jsf = getJSF(coeffs[a], coeffs[b]); - max = Math.max(jsf[0].length, max); - naf[a] = new Array(max); - naf[b] = new Array(max); - for (var j = 0; j < max; j++) { - var ja = jsf[0][j] | 0; - var jb = jsf[1][j] | 0; + if (Buffer.isBuffer(num)) { + var size = num.length; + if (num.length === 0) + size++; - naf[a][j] = index[(ja + 1) * 3 + (jb + 1)]; - naf[b][j] = 0; - wnd[a] = comb; - } + var out = new Buffer(size); + num.copy(out); + if (num.length === 0) + out[0] = 0 + return this._createEncoderBuffer(out); } - var acc = this.jpoint(null, null, null); - var tmp = this._wnafT4; - for (var i = max; i >= 0; i--) { - var k = 0; + if (num < 0x80) + return this._createEncoderBuffer(num); - while (i >= 0) { - var zero = true; - for (var j = 0; j < len; j++) { - tmp[j] = naf[j][i] | 0; - if (tmp[j] !== 0) - zero = false; - } - if (!zero) - break; - k++; - i--; - } - if (i >= 0) - k++; - acc = acc.dblp(k); - if (i < 0) - break; + if (num < 0x100) + return this._createEncoderBuffer([0, num]); - for (var j = 0; j < len; j++) { - var z = tmp[j]; - var p; - if (z === 0) - continue; - else if (z > 0) - p = wnd[j][(z - 1) >> 1]; - else if (z < 0) - p = wnd[j][(-z - 1) >> 1].neg(); + var size = 1; + for (var i = num; i >= 0x100; i >>= 8) + size++; - if (p.type === 'affine') - acc = acc.mixedAdd(p); - else - acc = acc.add(p); - } + var out = new Array(size); + for (var i = out.length - 1; i >= 0; i--) { + out[i] = num & 0xff; + num >>= 8; + } + if(out[0] & 0x80) { + out.unshift(0); } - // Zeroify references - for (var i = 0; i < len; i++) - wnd[i] = null; - if (jacobianResult) - return acc; - else - return acc.toP(); + return this._createEncoderBuffer(new Buffer(out)); }; -function BasePoint(curve, type) { - this.curve = curve; - this.type = type; - this.precomputed = null; -} -BaseCurve.BasePoint = BasePoint; - -BasePoint.prototype.eq = function eq(/*other*/) { - throw new Error('Not implemented'); +DERNode.prototype._encodeBool = function encodeBool(value) { + return this._createEncoderBuffer(value ? 0xff : 0); }; -BasePoint.prototype.validate = function validate() { - return this.curve.validate(this); +DERNode.prototype._use = function use(entity, obj) { + if (typeof entity === 'function') + entity = entity(obj); + return entity._getEncoder('der').tree; }; -BaseCurve.prototype.decodePoint = function decodePoint(bytes, enc) { - bytes = utils.toArray(bytes, enc); +DERNode.prototype._skipDefault = function skipDefault(dataBuffer, reporter, parent) { + var state = this._baseState; + var i; + if (state['default'] === null) + return false; - var len = this.p.byteLength(); + var data = dataBuffer.join(); + if (state.defaultBuffer === undefined) + state.defaultBuffer = this._encodeValue(state['default'], reporter, parent).join(); - // uncompressed, hybrid-odd, hybrid-even - if ((bytes[0] === 0x04 || bytes[0] === 0x06 || bytes[0] === 0x07) && - bytes.length - 1 === 2 * len) { - if (bytes[0] === 0x06) - assert(bytes[bytes.length - 1] % 2 === 0); - else if (bytes[0] === 0x07) - assert(bytes[bytes.length - 1] % 2 === 1); + if (data.length !== state.defaultBuffer.length) + return false; - var res = this.point(bytes.slice(1, 1 + len), - bytes.slice(1 + len, 1 + 2 * len)); + for (i=0; i < data.length; i++) + if (data[i] !== state.defaultBuffer[i]) + return false; - return res; - } else if ((bytes[0] === 0x02 || bytes[0] === 0x03) && - bytes.length - 1 === len) { - return this.pointFromX(bytes.slice(1, 1 + len), bytes[0] === 0x03); - } - throw new Error('Unknown point format'); + return true; }; -BasePoint.prototype.encodeCompressed = function encodeCompressed(enc) { - return this.encode(enc, true); -}; +// Utility methods -BasePoint.prototype._encode = function _encode(compact) { - var len = this.curve.p.byteLength(); - var x = this.getX().toArray('be', len); +function encodeTag(tag, primitive, cls, reporter) { + var res; - if (compact) - return [ this.getY().isEven() ? 0x02 : 0x03 ].concat(x); + if (tag === 'seqof') + tag = 'seq'; + else if (tag === 'setof') + tag = 'set'; - return [ 0x04 ].concat(x, this.getY().toArray('be', len)) ; -}; + if (der.tagByName.hasOwnProperty(tag)) + res = der.tagByName[tag]; + else if (typeof tag === 'number' && (tag | 0) === tag) + res = tag; + else + return reporter.error('Unknown tag: ' + tag); -BasePoint.prototype.encode = function encode(enc, compact) { - return utils.encode(this._encode(compact), enc); -}; + if (res >= 0x1f) + return reporter.error('Multi-octet tag encoding unsupported'); -BasePoint.prototype.precompute = function precompute(power) { - if (this.precomputed) - return this; + if (!primitive) + res |= 0x20; - var precomputed = { - doubles: null, - naf: null, - beta: null - }; - precomputed.naf = this._getNAFPoints(8); - precomputed.doubles = this._getDoubles(4, power); - precomputed.beta = this._getBeta(); - this.precomputed = precomputed; + res |= (der.tagClassByName[cls || 'universal'] << 6); - return this; -}; - -BasePoint.prototype._hasDoubles = function _hasDoubles(k) { - if (!this.precomputed) - return false; - - var doubles = this.precomputed.doubles; - if (!doubles) - return false; + return res; +} - return doubles.points.length >= Math.ceil((k.bitLength() + 1) / doubles.step); -}; +},{"../../asn1":47,"buffer":100,"inherits":153}],59:[function(require,module,exports){ +var encoders = exports; -BasePoint.prototype._getDoubles = function _getDoubles(step, power) { - if (this.precomputed && this.precomputed.doubles) - return this.precomputed.doubles; +encoders.der = require('./der'); +encoders.pem = require('./pem'); - var doubles = [ this ]; - var acc = this; - for (var i = 0; i < power; i += step) { - for (var j = 0; j < step; j++) - acc = acc.dbl(); - doubles.push(acc); - } - return { - step: step, - points: doubles - }; -}; +},{"./der":58,"./pem":60}],60:[function(require,module,exports){ +var inherits = require('inherits'); -BasePoint.prototype._getNAFPoints = function _getNAFPoints(wnd) { - if (this.precomputed && this.precomputed.naf) - return this.precomputed.naf; +var DEREncoder = require('./der'); - var res = [ this ]; - var max = (1 << wnd) - 1; - var dbl = max === 1 ? null : this.dbl(); - for (var i = 1; i < max; i++) - res[i] = res[i - 1].add(dbl); - return { - wnd: wnd, - points: res - }; +function PEMEncoder(entity) { + DEREncoder.call(this, entity); + this.enc = 'pem'; }; +inherits(PEMEncoder, DEREncoder); +module.exports = PEMEncoder; -BasePoint.prototype._getBeta = function _getBeta() { - return null; -}; +PEMEncoder.prototype.encode = function encode(data, options) { + var buf = DEREncoder.prototype.encode.call(this, data); -BasePoint.prototype.dblp = function dblp(k) { - var r = this; - for (var i = 0; i < k; i++) - r = r.dbl(); - return r; + var p = buf.toString('base64'); + var out = [ '-----BEGIN ' + options.label + '-----' ]; + for (var i = 0; i < p.length; i += 64) + out.push(p.slice(i, i + 64)); + out.push('-----END ' + options.label + '-----'); + return out.join('\n'); }; -},{"../../elliptic":71,"bn.js":20}],73:[function(require,module,exports){ +},{"./der":58,"inherits":153}],61:[function(require,module,exports){ +(function (global){ 'use strict'; -var curve = require('../curve'); -var elliptic = require('../../elliptic'); -var BN = require('bn.js'); -var inherits = require('inherits'); -var Base = curve.base; - -var assert = elliptic.utils.assert; +// compare and isBuffer taken from https://github.com/feross/buffer/blob/680e9e5e488f22aac27599a57dc844a6315928dd/index.js +// original notice: -function EdwardsCurve(conf) { - // NOTE: Important as we are creating point in Base.call() - this.twisted = (conf.a | 0) !== 1; - this.mOneA = this.twisted && (conf.a | 0) === -1; - this.extended = this.mOneA; +/*! + * The buffer module from node.js, for the browser. + * + * @author Feross Aboukhadijeh + * @license MIT + */ +function compare(a, b) { + if (a === b) { + return 0; + } - Base.call(this, 'edwards', conf); + var x = a.length; + var y = b.length; - this.a = new BN(conf.a, 16).umod(this.red.m); - this.a = this.a.toRed(this.red); - this.c = new BN(conf.c, 16).toRed(this.red); - this.c2 = this.c.redSqr(); - this.d = new BN(conf.d, 16).toRed(this.red); - this.dd = this.d.redAdd(this.d); + for (var i = 0, len = Math.min(x, y); i < len; ++i) { + if (a[i] !== b[i]) { + x = a[i]; + y = b[i]; + break; + } + } - assert(!this.twisted || this.c.fromRed().cmpn(1) === 0); - this.oneC = (conf.c | 0) === 1; + if (x < y) { + return -1; + } + if (y < x) { + return 1; + } + return 0; +} +function isBuffer(b) { + if (global.Buffer && typeof global.Buffer.isBuffer === 'function') { + return global.Buffer.isBuffer(b); + } + return !!(b != null && b._isBuffer); } -inherits(EdwardsCurve, Base); -module.exports = EdwardsCurve; -EdwardsCurve.prototype._mulA = function _mulA(num) { - if (this.mOneA) - return num.redNeg(); - else - return this.a.redMul(num); -}; +// based on node assert, original notice: -EdwardsCurve.prototype._mulC = function _mulC(num) { - if (this.oneC) - return num; - else - return this.c.redMul(num); -}; +// http://wiki.commonjs.org/wiki/Unit_Testing/1.0 +// +// THIS IS NOT TESTED NOR LIKELY TO WORK OUTSIDE V8! +// +// Originally from narwhal.js (http://narwhaljs.org) +// Copyright (c) 2009 Thomas Robinson <280north.com> +// +// Permission is hereby granted, free of charge, to any person obtaining a copy +// of this software and associated documentation files (the 'Software'), to +// deal in the Software without restriction, including without limitation the +// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or +// sell copies of the Software, and to permit persons to whom the Software is +// furnished to do so, subject to the following conditions: +// +// The above copyright notice and this permission notice shall be included in +// all copies or substantial portions of the Software. +// +// THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +// AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN +// ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION +// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. -// Just for compatibility with Short curve -EdwardsCurve.prototype.jpoint = function jpoint(x, y, z, t) { - return this.point(x, y, z, t); -}; +var util = require('util/'); +var hasOwn = Object.prototype.hasOwnProperty; +var pSlice = Array.prototype.slice; +var functionsHaveNames = (function () { + return function foo() {}.name === 'foo'; +}()); +function pToString (obj) { + return Object.prototype.toString.call(obj); +} +function isView(arrbuf) { + if (isBuffer(arrbuf)) { + return false; + } + if (typeof global.ArrayBuffer !== 'function') { + return false; + } + if (typeof ArrayBuffer.isView === 'function') { + return ArrayBuffer.isView(arrbuf); + } + if (!arrbuf) { + return false; + } + if (arrbuf instanceof DataView) { + return true; + } + if (arrbuf.buffer && arrbuf.buffer instanceof ArrayBuffer) { + return true; + } + return false; +} +// 1. The assert module provides functions that throw +// AssertionError's when particular conditions are not met. The +// assert module must conform to the following interface. -EdwardsCurve.prototype.pointFromX = function pointFromX(x, odd) { - x = new BN(x, 16); - if (!x.red) - x = x.toRed(this.red); +var assert = module.exports = ok; - var x2 = x.redSqr(); - var rhs = this.c2.redSub(this.a.redMul(x2)); - var lhs = this.one.redSub(this.c2.redMul(this.d).redMul(x2)); +// 2. The AssertionError is defined in assert. +// new assert.AssertionError({ message: message, +// actual: actual, +// expected: expected }) - var y2 = rhs.redMul(lhs.redInvm()); - var y = y2.redSqrt(); - if (y.redSqr().redSub(y2).cmp(this.zero) !== 0) - throw new Error('invalid point'); +var regex = /\s*function\s+([^\(\s]*)\s*/; +// based on https://github.com/ljharb/function.prototype.name/blob/adeeeec8bfcc6068b187d7d9fb3d5bb1d3a30899/implementation.js +function getName(func) { + if (!util.isFunction(func)) { + return; + } + if (functionsHaveNames) { + return func.name; + } + var str = func.toString(); + var match = str.match(regex); + return match && match[1]; +} +assert.AssertionError = function AssertionError(options) { + this.name = 'AssertionError'; + this.actual = options.actual; + this.expected = options.expected; + this.operator = options.operator; + if (options.message) { + this.message = options.message; + this.generatedMessage = false; + } else { + this.message = getMessage(this); + this.generatedMessage = true; + } + var stackStartFunction = options.stackStartFunction || fail; + if (Error.captureStackTrace) { + Error.captureStackTrace(this, stackStartFunction); + } else { + // non v8 browsers so we can have a stacktrace + var err = new Error(); + if (err.stack) { + var out = err.stack; - var isOdd = y.fromRed().isOdd(); - if (odd && !isOdd || !odd && isOdd) - y = y.redNeg(); + // try to strip useless frames + var fn_name = getName(stackStartFunction); + var idx = out.indexOf('\n' + fn_name); + if (idx >= 0) { + // once we have located the function frame + // we need to strip out everything before it (and its line) + var next_line = out.indexOf('\n', idx + 1); + out = out.substring(next_line + 1); + } - return this.point(x, y); + this.stack = out; + } + } }; -EdwardsCurve.prototype.pointFromY = function pointFromY(y, odd) { - y = new BN(y, 16); - if (!y.red) - y = y.toRed(this.red); - - // x^2 = (y^2 - c^2) / (c^2 d y^2 - a) - var y2 = y.redSqr(); - var lhs = y2.redSub(this.c2); - var rhs = y2.redMul(this.d).redMul(this.c2).redSub(this.a); - var x2 = lhs.redMul(rhs.redInvm()); +// assert.AssertionError instanceof Error +util.inherits(assert.AssertionError, Error); - if (x2.cmp(this.zero) === 0) { - if (odd) - throw new Error('invalid point'); - else - return this.point(this.zero, y); +function truncate(s, n) { + if (typeof s === 'string') { + return s.length < n ? s : s.slice(0, n); + } else { + return s; + } +} +function inspect(something) { + if (functionsHaveNames || !util.isFunction(something)) { + return util.inspect(something); } + var rawname = getName(something); + var name = rawname ? ': ' + rawname : ''; + return '[Function' + name + ']'; +} +function getMessage(self) { + return truncate(inspect(self.actual), 128) + ' ' + + self.operator + ' ' + + truncate(inspect(self.expected), 128); +} - var x = x2.redSqrt(); - if (x.redSqr().redSub(x2).cmp(this.zero) !== 0) - throw new Error('invalid point'); +// At present only the three keys mentioned above are used and +// understood by the spec. Implementations or sub modules can pass +// other keys to the AssertionError's constructor - they will be +// ignored. - if (x.fromRed().isOdd() !== odd) - x = x.redNeg(); +// 3. All of the following functions must throw an AssertionError +// when a corresponding condition is not met, with a message that +// may be undefined if not provided. All assertion methods provide +// both the actual and expected values to the assertion error for +// display purposes. - return this.point(x, y); -}; +function fail(actual, expected, message, operator, stackStartFunction) { + throw new assert.AssertionError({ + message: message, + actual: actual, + expected: expected, + operator: operator, + stackStartFunction: stackStartFunction + }); +} -EdwardsCurve.prototype.validate = function validate(point) { - if (point.isInfinity()) - return true; +// EXTENSION! allows for well behaved errors defined elsewhere. +assert.fail = fail; - // Curve: A * X^2 + Y^2 = C^2 * (1 + D * X^2 * Y^2) - point.normalize(); +// 4. Pure assertion tests whether a value is truthy, as determined +// by !!guard. +// assert.ok(guard, message_opt); +// This statement is equivalent to assert.equal(true, !!guard, +// message_opt);. To test strictly for the value true, use +// assert.strictEqual(true, guard, message_opt);. - var x2 = point.x.redSqr(); - var y2 = point.y.redSqr(); - var lhs = x2.redMul(this.a).redAdd(y2); - var rhs = this.c2.redMul(this.one.redAdd(this.d.redMul(x2).redMul(y2))); +function ok(value, message) { + if (!value) fail(value, true, message, '==', assert.ok); +} +assert.ok = ok; - return lhs.cmp(rhs) === 0; +// 5. The equality assertion tests shallow, coercive equality with +// ==. +// assert.equal(actual, expected, message_opt); + +assert.equal = function equal(actual, expected, message) { + if (actual != expected) fail(actual, expected, message, '==', assert.equal); }; -function Point(curve, x, y, z, t) { - Base.BasePoint.call(this, curve, 'projective'); - if (x === null && y === null && z === null) { - this.x = this.curve.zero; - this.y = this.curve.one; - this.z = this.curve.one; - this.t = this.curve.zero; - this.zOne = true; - } else { - this.x = new BN(x, 16); - this.y = new BN(y, 16); - this.z = z ? new BN(z, 16) : this.curve.one; - this.t = t && new BN(t, 16); - if (!this.x.red) - this.x = this.x.toRed(this.curve.red); - if (!this.y.red) - this.y = this.y.toRed(this.curve.red); - if (!this.z.red) - this.z = this.z.toRed(this.curve.red); - if (this.t && !this.t.red) - this.t = this.t.toRed(this.curve.red); - this.zOne = this.z === this.curve.one; +// 6. The non-equality assertion tests for whether two objects are not equal +// with != assert.notEqual(actual, expected, message_opt); - // Use extended coordinates - if (this.curve.extended && !this.t) { - this.t = this.x.redMul(this.y); - if (!this.zOne) - this.t = this.t.redMul(this.z.redInvm()); - } +assert.notEqual = function notEqual(actual, expected, message) { + if (actual == expected) { + fail(actual, expected, message, '!=', assert.notEqual); } -} -inherits(Point, Base.BasePoint); - -EdwardsCurve.prototype.pointFromJSON = function pointFromJSON(obj) { - return Point.fromJSON(this, obj); }; -EdwardsCurve.prototype.point = function point(x, y, z, t) { - return new Point(this, x, y, z, t); -}; +// 7. The equivalence assertion tests a deep equality relation. +// assert.deepEqual(actual, expected, message_opt); -Point.fromJSON = function fromJSON(curve, obj) { - return new Point(curve, obj[0], obj[1], obj[2]); +assert.deepEqual = function deepEqual(actual, expected, message) { + if (!_deepEqual(actual, expected, false)) { + fail(actual, expected, message, 'deepEqual', assert.deepEqual); + } }; -Point.prototype.inspect = function inspect() { - if (this.isInfinity()) - return ''; - return ''; +assert.deepStrictEqual = function deepStrictEqual(actual, expected, message) { + if (!_deepEqual(actual, expected, true)) { + fail(actual, expected, message, 'deepStrictEqual', assert.deepStrictEqual); + } }; -Point.prototype.isInfinity = function isInfinity() { - // XXX This code assumes that zero is always zero in red - return this.x.cmpn(0) === 0 && - (this.y.cmp(this.z) === 0 || - (this.zOne && this.y.cmp(this.curve.c) === 0)); -}; +function _deepEqual(actual, expected, strict, memos) { + // 7.1. All identical values are equivalent, as determined by ===. + if (actual === expected) { + return true; + } else if (isBuffer(actual) && isBuffer(expected)) { + return compare(actual, expected) === 0; -Point.prototype._extDbl = function _extDbl() { - // hyperelliptic.org/EFD/g1p/auto-twisted-extended-1.html - // #doubling-dbl-2008-hwcd - // 4M + 4S + // 7.2. If the expected value is a Date object, the actual value is + // equivalent if it is also a Date object that refers to the same time. + } else if (util.isDate(actual) && util.isDate(expected)) { + return actual.getTime() === expected.getTime(); - // A = X1^2 - var a = this.x.redSqr(); - // B = Y1^2 - var b = this.y.redSqr(); - // C = 2 * Z1^2 - var c = this.z.redSqr(); - c = c.redIAdd(c); - // D = a * A - var d = this.curve._mulA(a); - // E = (X1 + Y1)^2 - A - B - var e = this.x.redAdd(this.y).redSqr().redISub(a).redISub(b); - // G = D + B - var g = d.redAdd(b); - // F = G - C - var f = g.redSub(c); - // H = D - B - var h = d.redSub(b); - // X3 = E * F - var nx = e.redMul(f); - // Y3 = G * H - var ny = g.redMul(h); - // T3 = E * H - var nt = e.redMul(h); - // Z3 = F * G - var nz = f.redMul(g); - return this.curve.point(nx, ny, nz, nt); -}; + // 7.3 If the expected value is a RegExp object, the actual value is + // equivalent if it is also a RegExp object with the same source and + // properties (`global`, `multiline`, `lastIndex`, `ignoreCase`). + } else if (util.isRegExp(actual) && util.isRegExp(expected)) { + return actual.source === expected.source && + actual.global === expected.global && + actual.multiline === expected.multiline && + actual.lastIndex === expected.lastIndex && + actual.ignoreCase === expected.ignoreCase; -Point.prototype._projDbl = function _projDbl() { - // hyperelliptic.org/EFD/g1p/auto-twisted-projective.html - // #doubling-dbl-2008-bbjlp - // #doubling-dbl-2007-bl - // and others - // Generally 3M + 4S or 2M + 4S + // 7.4. Other pairs that do not both pass typeof value == 'object', + // equivalence is determined by ==. + } else if ((actual === null || typeof actual !== 'object') && + (expected === null || typeof expected !== 'object')) { + return strict ? actual === expected : actual == expected; - // B = (X1 + Y1)^2 - var b = this.x.redAdd(this.y).redSqr(); - // C = X1^2 - var c = this.x.redSqr(); - // D = Y1^2 - var d = this.y.redSqr(); + // If both values are instances of typed arrays, wrap their underlying + // ArrayBuffers in a Buffer each to increase performance + // This optimization requires the arrays to have the same type as checked by + // Object.prototype.toString (aka pToString). Never perform binary + // comparisons for Float*Arrays, though, since e.g. +0 === -0 but their + // bit patterns are not identical. + } else if (isView(actual) && isView(expected) && + pToString(actual) === pToString(expected) && + !(actual instanceof Float32Array || + actual instanceof Float64Array)) { + return compare(new Uint8Array(actual.buffer), + new Uint8Array(expected.buffer)) === 0; - var nx; - var ny; - var nz; - if (this.curve.twisted) { - // E = a * C - var e = this.curve._mulA(c); - // F = E + D - var f = e.redAdd(d); - if (this.zOne) { - // X3 = (B - C - D) * (F - 2) - nx = b.redSub(c).redSub(d).redMul(f.redSub(this.curve.two)); - // Y3 = F * (E - D) - ny = f.redMul(e.redSub(d)); - // Z3 = F^2 - 2 * F - nz = f.redSqr().redSub(f).redSub(f); - } else { - // H = Z1^2 - var h = this.z.redSqr(); - // J = F - 2 * H - var j = f.redSub(h).redISub(h); - // X3 = (B-C-D)*J - nx = b.redSub(c).redISub(d).redMul(j); - // Y3 = F * (E - D) - ny = f.redMul(e.redSub(d)); - // Z3 = F * J - nz = f.redMul(j); - } + // 7.5 For all other Object pairs, including Array objects, equivalence is + // determined by having the same number of owned properties (as verified + // with Object.prototype.hasOwnProperty.call), the same set of keys + // (although not necessarily the same order), equivalent values for every + // corresponding key, and an identical 'prototype' property. Note: this + // accounts for both named and indexed properties on Arrays. + } else if (isBuffer(actual) !== isBuffer(expected)) { + return false; } else { - // E = C + D - var e = c.redAdd(d); - // H = (c * Z1)^2 - var h = this.curve._mulC(this.z).redSqr(); - // J = E - 2 * H - var j = e.redSub(h).redSub(h); - // X3 = c * (B - E) * J - nx = this.curve._mulC(b.redISub(e)).redMul(j); - // Y3 = c * E * (C - D) - ny = this.curve._mulC(e).redMul(c.redISub(d)); - // Z3 = E * J - nz = e.redMul(j); - } - return this.curve.point(nx, ny, nz); -}; - -Point.prototype.dbl = function dbl() { - if (this.isInfinity()) - return this; - - // Double in extended coordinates - if (this.curve.extended) - return this._extDbl(); - else - return this._projDbl(); -}; - -Point.prototype._extAdd = function _extAdd(p) { - // hyperelliptic.org/EFD/g1p/auto-twisted-extended-1.html - // #addition-add-2008-hwcd-3 - // 8M + memos = memos || {actual: [], expected: []}; - // A = (Y1 - X1) * (Y2 - X2) - var a = this.y.redSub(this.x).redMul(p.y.redSub(p.x)); - // B = (Y1 + X1) * (Y2 + X2) - var b = this.y.redAdd(this.x).redMul(p.y.redAdd(p.x)); - // C = T1 * k * T2 - var c = this.t.redMul(this.curve.dd).redMul(p.t); - // D = Z1 * 2 * Z2 - var d = this.z.redMul(p.z.redAdd(p.z)); - // E = B - A - var e = b.redSub(a); - // F = D - C - var f = d.redSub(c); - // G = D + C - var g = d.redAdd(c); - // H = B + A - var h = b.redAdd(a); - // X3 = E * F - var nx = e.redMul(f); - // Y3 = G * H - var ny = g.redMul(h); - // T3 = E * H - var nt = e.redMul(h); - // Z3 = F * G - var nz = f.redMul(g); - return this.curve.point(nx, ny, nz, nt); -}; + var actualIndex = memos.actual.indexOf(actual); + if (actualIndex !== -1) { + if (actualIndex === memos.expected.indexOf(expected)) { + return true; + } + } -Point.prototype._projAdd = function _projAdd(p) { - // hyperelliptic.org/EFD/g1p/auto-twisted-projective.html - // #addition-add-2008-bbjlp - // #addition-add-2007-bl - // 10M + 1S + memos.actual.push(actual); + memos.expected.push(expected); - // A = Z1 * Z2 - var a = this.z.redMul(p.z); - // B = A^2 - var b = a.redSqr(); - // C = X1 * X2 - var c = this.x.redMul(p.x); - // D = Y1 * Y2 - var d = this.y.redMul(p.y); - // E = d * C * D - var e = this.curve.d.redMul(c).redMul(d); - // F = B - E - var f = b.redSub(e); - // G = B + E - var g = b.redAdd(e); - // X3 = A * F * ((X1 + Y1) * (X2 + Y2) - C - D) - var tmp = this.x.redAdd(this.y).redMul(p.x.redAdd(p.y)).redISub(c).redISub(d); - var nx = a.redMul(f).redMul(tmp); - var ny; - var nz; - if (this.curve.twisted) { - // Y3 = A * G * (D - a * C) - ny = a.redMul(g).redMul(d.redSub(this.curve._mulA(c))); - // Z3 = F * G - nz = f.redMul(g); - } else { - // Y3 = A * G * (D - C) - ny = a.redMul(g).redMul(d.redSub(c)); - // Z3 = c * F * G - nz = this.curve._mulC(f).redMul(g); + return objEquiv(actual, expected, strict, memos); } - return this.curve.point(nx, ny, nz); -}; - -Point.prototype.add = function add(p) { - if (this.isInfinity()) - return p; - if (p.isInfinity()) - return this; +} - if (this.curve.extended) - return this._extAdd(p); - else - return this._projAdd(p); -}; +function isArguments(object) { + return Object.prototype.toString.call(object) == '[object Arguments]'; +} -Point.prototype.mul = function mul(k) { - if (this._hasDoubles(k)) - return this.curve._fixedNafMul(this, k); - else - return this.curve._wnafMul(this, k); -}; +function objEquiv(a, b, strict, actualVisitedObjects) { + if (a === null || a === undefined || b === null || b === undefined) + return false; + // if one is a primitive, the other must be same + if (util.isPrimitive(a) || util.isPrimitive(b)) + return a === b; + if (strict && Object.getPrototypeOf(a) !== Object.getPrototypeOf(b)) + return false; + var aIsArgs = isArguments(a); + var bIsArgs = isArguments(b); + if ((aIsArgs && !bIsArgs) || (!aIsArgs && bIsArgs)) + return false; + if (aIsArgs) { + a = pSlice.call(a); + b = pSlice.call(b); + return _deepEqual(a, b, strict); + } + var ka = objectKeys(a); + var kb = objectKeys(b); + var key, i; + // having the same number of owned properties (keys incorporates + // hasOwnProperty) + if (ka.length !== kb.length) + return false; + //the same set of keys (although not necessarily the same order), + ka.sort(); + kb.sort(); + //~~~cheap key test + for (i = ka.length - 1; i >= 0; i--) { + if (ka[i] !== kb[i]) + return false; + } + //equivalent values for every corresponding key, and + //~~~possibly expensive deep test + for (i = ka.length - 1; i >= 0; i--) { + key = ka[i]; + if (!_deepEqual(a[key], b[key], strict, actualVisitedObjects)) + return false; + } + return true; +} -Point.prototype.mulAdd = function mulAdd(k1, p, k2) { - return this.curve._wnafMulAdd(1, [ this, p ], [ k1, k2 ], 2, false); -}; +// 8. The non-equivalence assertion tests for any deep inequality. +// assert.notDeepEqual(actual, expected, message_opt); -Point.prototype.jmulAdd = function jmulAdd(k1, p, k2) { - return this.curve._wnafMulAdd(1, [ this, p ], [ k1, k2 ], 2, true); +assert.notDeepEqual = function notDeepEqual(actual, expected, message) { + if (_deepEqual(actual, expected, false)) { + fail(actual, expected, message, 'notDeepEqual', assert.notDeepEqual); + } }; -Point.prototype.normalize = function normalize() { - if (this.zOne) - return this; +assert.notDeepStrictEqual = notDeepStrictEqual; +function notDeepStrictEqual(actual, expected, message) { + if (_deepEqual(actual, expected, true)) { + fail(actual, expected, message, 'notDeepStrictEqual', notDeepStrictEqual); + } +} - // Normalize coordinates - var zi = this.z.redInvm(); - this.x = this.x.redMul(zi); - this.y = this.y.redMul(zi); - if (this.t) - this.t = this.t.redMul(zi); - this.z = this.curve.one; - this.zOne = true; - return this; -}; -Point.prototype.neg = function neg() { - return this.curve.point(this.x.redNeg(), - this.y, - this.z, - this.t && this.t.redNeg()); -}; +// 9. The strict equality assertion tests strict equality, as determined by ===. +// assert.strictEqual(actual, expected, message_opt); -Point.prototype.getX = function getX() { - this.normalize(); - return this.x.fromRed(); +assert.strictEqual = function strictEqual(actual, expected, message) { + if (actual !== expected) { + fail(actual, expected, message, '===', assert.strictEqual); + } }; -Point.prototype.getY = function getY() { - this.normalize(); - return this.y.fromRed(); -}; +// 10. The strict non-equality assertion tests for strict inequality, as +// determined by !==. assert.notStrictEqual(actual, expected, message_opt); -Point.prototype.eq = function eq(other) { - return this === other || - this.getX().cmp(other.getX()) === 0 && - this.getY().cmp(other.getY()) === 0; +assert.notStrictEqual = function notStrictEqual(actual, expected, message) { + if (actual === expected) { + fail(actual, expected, message, '!==', assert.notStrictEqual); + } }; -Point.prototype.eqXToP = function eqXToP(x) { - var rx = x.toRed(this.curve.red).redMul(this.z); - if (this.x.cmp(rx) === 0) - return true; +function expectedException(actual, expected) { + if (!actual || !expected) { + return false; + } - var xc = x.clone(); - var t = this.curve.redN.redMul(this.z); - for (;;) { - xc.iadd(this.curve.n); - if (xc.cmp(this.curve.p) >= 0) - return false; + if (Object.prototype.toString.call(expected) == '[object RegExp]') { + return expected.test(actual); + } - rx.redIAdd(t); - if (this.x.cmp(rx) === 0) + try { + if (actual instanceof expected) { return true; + } + } catch (e) { + // Ignore. The instanceof check doesn't work for arrow functions. } -}; -// Compatibility with BaseCurve -Point.prototype.toP = Point.prototype.normalize; -Point.prototype.mixedAdd = Point.prototype.add; + if (Error.isPrototypeOf(expected)) { + return false; + } -},{"../../elliptic":71,"../curve":74,"bn.js":20,"inherits":104}],74:[function(require,module,exports){ -'use strict'; + return expected.call({}, actual) === true; +} -var curve = exports; +function _tryBlock(block) { + var error; + try { + block(); + } catch (e) { + error = e; + } + return error; +} -curve.base = require('./base'); -curve.short = require('./short'); -curve.mont = require('./mont'); -curve.edwards = require('./edwards'); +function _throws(shouldThrow, block, expected, message) { + var actual; -},{"./base":72,"./edwards":73,"./mont":75,"./short":76}],75:[function(require,module,exports){ -'use strict'; + if (typeof block !== 'function') { + throw new TypeError('"block" argument must be a function'); + } -var curve = require('../curve'); -var BN = require('bn.js'); -var inherits = require('inherits'); -var Base = curve.base; + if (typeof expected === 'string') { + message = expected; + expected = null; + } -var elliptic = require('../../elliptic'); -var utils = elliptic.utils; + actual = _tryBlock(block); -function MontCurve(conf) { - Base.call(this, 'mont', conf); + message = (expected && expected.name ? ' (' + expected.name + ').' : '.') + + (message ? ' ' + message : '.'); - this.a = new BN(conf.a, 16).toRed(this.red); - this.b = new BN(conf.b, 16).toRed(this.red); - this.i4 = new BN(4).toRed(this.red).redInvm(); - this.two = new BN(2).toRed(this.red); - this.a24 = this.i4.redMul(this.a.redAdd(this.two)); -} -inherits(MontCurve, Base); -module.exports = MontCurve; + if (shouldThrow && !actual) { + fail(actual, expected, 'Missing expected exception' + message); + } -MontCurve.prototype.validate = function validate(point) { - var x = point.normalize().x; - var x2 = x.redSqr(); - var rhs = x2.redMul(x).redAdd(x2.redMul(this.a)).redAdd(x); - var y = rhs.redSqrt(); + var userProvidedMessage = typeof message === 'string'; + var isUnwantedException = !shouldThrow && util.isError(actual); + var isUnexpectedException = !shouldThrow && actual && !expected; - return y.redSqr().cmp(rhs) === 0; -}; + if ((isUnwantedException && + userProvidedMessage && + expectedException(actual, expected)) || + isUnexpectedException) { + fail(actual, expected, 'Got unwanted exception' + message); + } -function Point(curve, x, z) { - Base.BasePoint.call(this, curve, 'projective'); - if (x === null && z === null) { - this.x = this.curve.one; - this.z = this.curve.zero; - } else { - this.x = new BN(x, 16); - this.z = new BN(z, 16); - if (!this.x.red) - this.x = this.x.toRed(this.curve.red); - if (!this.z.red) - this.z = this.z.toRed(this.curve.red); + if ((shouldThrow && actual && expected && + !expectedException(actual, expected)) || (!shouldThrow && actual)) { + throw actual; } } -inherits(Point, Base.BasePoint); -MontCurve.prototype.decodePoint = function decodePoint(bytes, enc) { - return this.point(utils.toArray(bytes, enc), 1); -}; +// 11. Expected to throw an error: +// assert.throws(block, Error_opt, message_opt); -MontCurve.prototype.point = function point(x, z) { - return new Point(this, x, z); +assert.throws = function(block, /*optional*/error, /*optional*/message) { + _throws(true, block, error, message); }; -MontCurve.prototype.pointFromJSON = function pointFromJSON(obj) { - return Point.fromJSON(this, obj); +// EXTENSION! This is annoying to write outside this module. +assert.doesNotThrow = function(block, /*optional*/error, /*optional*/message) { + _throws(false, block, error, message); }; -Point.prototype.precompute = function precompute() { - // No-op -}; +assert.ifError = function(err) { if (err) throw err; }; -Point.prototype._encode = function _encode() { - return this.getX().toArray('be', this.curve.p.byteLength()); +var objectKeys = Object.keys || function (obj) { + var keys = []; + for (var key in obj) { + if (hasOwn.call(obj, key)) keys.push(key); + } + return keys; }; -Point.fromJSON = function fromJSON(curve, obj) { - return new Point(curve, obj[0], obj[1] || curve.one); -}; +}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {}) +},{"util/":63}],62:[function(require,module,exports){ +module.exports = function isBuffer(arg) { + return arg && typeof arg === 'object' + && typeof arg.copy === 'function' + && typeof arg.fill === 'function' + && typeof arg.readUInt8 === 'function'; +} +},{}],63:[function(require,module,exports){ +(function (process,global){ +// Copyright Joyent, Inc. and other Node contributors. +// +// Permission is hereby granted, free of charge, to any person obtaining a +// copy of this software and associated documentation files (the +// "Software"), to deal in the Software without restriction, including +// without limitation the rights to use, copy, modify, merge, publish, +// distribute, sublicense, and/or sell copies of the Software, and to permit +// persons to whom the Software is furnished to do so, subject to the +// following conditions: +// +// The above copyright notice and this permission notice shall be included +// in all copies or substantial portions of the Software. +// +// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS +// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF +// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN +// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, +// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR +// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE +// USE OR OTHER DEALINGS IN THE SOFTWARE. -Point.prototype.inspect = function inspect() { - if (this.isInfinity()) - return ''; - return ''; -}; +var formatRegExp = /%[sdj%]/g; +exports.format = function(f) { + if (!isString(f)) { + var objects = []; + for (var i = 0; i < arguments.length; i++) { + objects.push(inspect(arguments[i])); + } + return objects.join(' '); + } -Point.prototype.isInfinity = function isInfinity() { - // XXX This code assumes that zero is always zero in red - return this.z.cmpn(0) === 0; + var i = 1; + var args = arguments; + var len = args.length; + var str = String(f).replace(formatRegExp, function(x) { + if (x === '%%') return '%'; + if (i >= len) return x; + switch (x) { + case '%s': return String(args[i++]); + case '%d': return Number(args[i++]); + case '%j': + try { + return JSON.stringify(args[i++]); + } catch (_) { + return '[Circular]'; + } + default: + return x; + } + }); + for (var x = args[i]; i < len; x = args[++i]) { + if (isNull(x) || !isObject(x)) { + str += ' ' + x; + } else { + str += ' ' + inspect(x); + } + } + return str; }; -Point.prototype.dbl = function dbl() { - // http://hyperelliptic.org/EFD/g1p/auto-montgom-xz.html#doubling-dbl-1987-m-3 - // 2M + 2S + 4A - // A = X1 + Z1 - var a = this.x.redAdd(this.z); - // AA = A^2 - var aa = a.redSqr(); - // B = X1 - Z1 - var b = this.x.redSub(this.z); - // BB = B^2 - var bb = b.redSqr(); - // C = AA - BB - var c = aa.redSub(bb); - // X3 = AA * BB - var nx = aa.redMul(bb); - // Z3 = C * (BB + A24 * C) - var nz = c.redMul(bb.redAdd(this.curve.a24.redMul(c))); - return this.curve.point(nx, nz); -}; +// Mark that a method should not be used. +// Returns a modified function which warns once by default. +// If --no-deprecation is set, then it is a no-op. +exports.deprecate = function(fn, msg) { + // Allow for deprecating things in the process of starting up. + if (isUndefined(global.process)) { + return function() { + return exports.deprecate(fn, msg).apply(this, arguments); + }; + } -Point.prototype.add = function add() { - throw new Error('Not supported on Montgomery curve'); + if (process.noDeprecation === true) { + return fn; + } + + var warned = false; + function deprecated() { + if (!warned) { + if (process.throwDeprecation) { + throw new Error(msg); + } else if (process.traceDeprecation) { + console.trace(msg); + } else { + console.error(msg); + } + warned = true; + } + return fn.apply(this, arguments); + } + + return deprecated; }; -Point.prototype.diffAdd = function diffAdd(p, diff) { - // http://hyperelliptic.org/EFD/g1p/auto-montgom-xz.html#diffadd-dadd-1987-m-3 - // 4M + 2S + 6A - // A = X2 + Z2 - var a = this.x.redAdd(this.z); - // B = X2 - Z2 - var b = this.x.redSub(this.z); - // C = X3 + Z3 - var c = p.x.redAdd(p.z); - // D = X3 - Z3 - var d = p.x.redSub(p.z); - // DA = D * A - var da = d.redMul(a); - // CB = C * B - var cb = c.redMul(b); - // X5 = Z1 * (DA + CB)^2 - var nx = diff.z.redMul(da.redAdd(cb).redSqr()); - // Z5 = X1 * (DA - CB)^2 - var nz = diff.x.redMul(da.redISub(cb).redSqr()); - return this.curve.point(nx, nz); -}; - -Point.prototype.mul = function mul(k) { - var t = k.clone(); - var a = this; // (N / 2) * Q + Q - var b = this.curve.point(null, null); // (N / 2) * Q - var c = this; // Q - - for (var bits = []; t.cmpn(0) !== 0; t.iushrn(1)) - bits.push(t.andln(1)); - - for (var i = bits.length - 1; i >= 0; i--) { - if (bits[i] === 0) { - // N * Q + Q = ((N / 2) * Q + Q)) + (N / 2) * Q - a = a.diffAdd(b, c); - // N * Q = 2 * ((N / 2) * Q + Q)) - b = b.dbl(); +var debugs = {}; +var debugEnviron; +exports.debuglog = function(set) { + if (isUndefined(debugEnviron)) + debugEnviron = process.env.NODE_DEBUG || ''; + set = set.toUpperCase(); + if (!debugs[set]) { + if (new RegExp('\\b' + set + '\\b', 'i').test(debugEnviron)) { + var pid = process.pid; + debugs[set] = function() { + var msg = exports.format.apply(exports, arguments); + console.error('%s %d: %s', set, pid, msg); + }; } else { - // N * Q = ((N / 2) * Q + Q) + ((N / 2) * Q) - b = a.diffAdd(b, c); - // N * Q + Q = 2 * ((N / 2) * Q + Q) - a = a.dbl(); + debugs[set] = function() {}; } } - return b; + return debugs[set]; }; -Point.prototype.mulAdd = function mulAdd() { - throw new Error('Not supported on Montgomery curve'); -}; -Point.prototype.jumlAdd = function jumlAdd() { - throw new Error('Not supported on Montgomery curve'); -}; +/** + * Echos the value of a value. Trys to print the value out + * in the best way possible given the different types. + * + * @param {Object} obj The object to print out. + * @param {Object} opts Optional options object that alters the output. + */ +/* legacy: obj, showHidden, depth, colors*/ +function inspect(obj, opts) { + // default options + var ctx = { + seen: [], + stylize: stylizeNoColor + }; + // legacy... + if (arguments.length >= 3) ctx.depth = arguments[2]; + if (arguments.length >= 4) ctx.colors = arguments[3]; + if (isBoolean(opts)) { + // legacy... + ctx.showHidden = opts; + } else if (opts) { + // got an "options" object + exports._extend(ctx, opts); + } + // set default options + if (isUndefined(ctx.showHidden)) ctx.showHidden = false; + if (isUndefined(ctx.depth)) ctx.depth = 2; + if (isUndefined(ctx.colors)) ctx.colors = false; + if (isUndefined(ctx.customInspect)) ctx.customInspect = true; + if (ctx.colors) ctx.stylize = stylizeWithColor; + return formatValue(ctx, obj, ctx.depth); +} +exports.inspect = inspect; -Point.prototype.eq = function eq(other) { - return this.getX().cmp(other.getX()) === 0; + +// http://en.wikipedia.org/wiki/ANSI_escape_code#graphics +inspect.colors = { + 'bold' : [1, 22], + 'italic' : [3, 23], + 'underline' : [4, 24], + 'inverse' : [7, 27], + 'white' : [37, 39], + 'grey' : [90, 39], + 'black' : [30, 39], + 'blue' : [34, 39], + 'cyan' : [36, 39], + 'green' : [32, 39], + 'magenta' : [35, 39], + 'red' : [31, 39], + 'yellow' : [33, 39] }; -Point.prototype.normalize = function normalize() { - this.x = this.x.redMul(this.z.redInvm()); - this.z = this.curve.one; - return this; +// Don't use 'blue' not visible on cmd.exe +inspect.styles = { + 'special': 'cyan', + 'number': 'yellow', + 'boolean': 'yellow', + 'undefined': 'grey', + 'null': 'bold', + 'string': 'green', + 'date': 'magenta', + // "name": intentionally not styling + 'regexp': 'red' }; -Point.prototype.getX = function getX() { - // Normalize coordinates - this.normalize(); - return this.x.fromRed(); -}; +function stylizeWithColor(str, styleType) { + var style = inspect.styles[styleType]; -},{"../../elliptic":71,"../curve":74,"bn.js":20,"inherits":104}],76:[function(require,module,exports){ -'use strict'; + if (style) { + return '\u001b[' + inspect.colors[style][0] + 'm' + str + + '\u001b[' + inspect.colors[style][1] + 'm'; + } else { + return str; + } +} -var curve = require('../curve'); -var elliptic = require('../../elliptic'); -var BN = require('bn.js'); -var inherits = require('inherits'); -var Base = curve.base; -var assert = elliptic.utils.assert; +function stylizeNoColor(str, styleType) { + return str; +} -function ShortCurve(conf) { - Base.call(this, 'short', conf); - this.a = new BN(conf.a, 16).toRed(this.red); - this.b = new BN(conf.b, 16).toRed(this.red); - this.tinv = this.two.redInvm(); +function arrayToHash(array) { + var hash = {}; - this.zeroA = this.a.fromRed().cmpn(0) === 0; - this.threeA = this.a.fromRed().sub(this.p).cmpn(-3) === 0; + array.forEach(function(val, idx) { + hash[val] = true; + }); - // If the curve is endomorphic, precalculate beta and lambda - this.endo = this._getEndomorphism(conf); - this._endoWnafT1 = new Array(4); - this._endoWnafT2 = new Array(4); + return hash; } -inherits(ShortCurve, Base); -module.exports = ShortCurve; -ShortCurve.prototype._getEndomorphism = function _getEndomorphism(conf) { - // No efficient endomorphism - if (!this.zeroA || !this.g || !this.n || this.p.modn(3) !== 1) - return; - // Compute beta and lambda, that lambda * P = (beta * Px; Py) - var beta; - var lambda; - if (conf.beta) { - beta = new BN(conf.beta, 16).toRed(this.red); - } else { - var betas = this._getEndoRoots(this.p); - // Choose the smallest beta - beta = betas[0].cmp(betas[1]) < 0 ? betas[0] : betas[1]; - beta = beta.toRed(this.red); - } - if (conf.lambda) { - lambda = new BN(conf.lambda, 16); - } else { - // Choose the lambda that is matching selected beta - var lambdas = this._getEndoRoots(this.n); - if (this.g.mul(lambdas[0]).x.cmp(this.g.x.redMul(beta)) === 0) { - lambda = lambdas[0]; - } else { - lambda = lambdas[1]; - assert(this.g.mul(lambda).x.cmp(this.g.x.redMul(beta)) === 0); +function formatValue(ctx, value, recurseTimes) { + // Provide a hook for user-specified inspect functions. + // Check that value is an object with an inspect function on it + if (ctx.customInspect && + value && + isFunction(value.inspect) && + // Filter out the util module, it's inspect function is special + value.inspect !== exports.inspect && + // Also filter out any prototype objects using the circular check. + !(value.constructor && value.constructor.prototype === value)) { + var ret = value.inspect(recurseTimes, ctx); + if (!isString(ret)) { + ret = formatValue(ctx, ret, recurseTimes); } + return ret; } - // Get basis vectors, used for balanced length-two representation - var basis; - if (conf.basis) { - basis = conf.basis.map(function(vec) { - return { - a: new BN(vec.a, 16), - b: new BN(vec.b, 16) - }; - }); - } else { - basis = this._getEndoBasis(lambda); + // Primitive types cannot have properties + var primitive = formatPrimitive(ctx, value); + if (primitive) { + return primitive; } - return { - beta: beta, - lambda: lambda, - basis: basis - }; -}; - -ShortCurve.prototype._getEndoRoots = function _getEndoRoots(num) { - // Find roots of for x^2 + x + 1 in F - // Root = (-1 +- Sqrt(-3)) / 2 - // - var red = num === this.p ? this.red : BN.mont(num); - var tinv = new BN(2).toRed(red).redInvm(); - var ntinv = tinv.redNeg(); - - var s = new BN(3).toRed(red).redNeg().redSqrt().redMul(tinv); - - var l1 = ntinv.redAdd(s).fromRed(); - var l2 = ntinv.redSub(s).fromRed(); - return [ l1, l2 ]; -}; - -ShortCurve.prototype._getEndoBasis = function _getEndoBasis(lambda) { - // aprxSqrt >= sqrt(this.n) - var aprxSqrt = this.n.ushrn(Math.floor(this.n.bitLength() / 2)); - - // 3.74 - // Run EGCD, until r(L + 1) < aprxSqrt - var u = lambda; - var v = this.n.clone(); - var x1 = new BN(1); - var y1 = new BN(0); - var x2 = new BN(0); - var y2 = new BN(1); + // Look up the keys of the object. + var keys = Object.keys(value); + var visibleKeys = arrayToHash(keys); - // NOTE: all vectors are roots of: a + b * lambda = 0 (mod n) - var a0; - var b0; - // First vector - var a1; - var b1; - // Second vector - var a2; - var b2; + if (ctx.showHidden) { + keys = Object.getOwnPropertyNames(value); + } - var prevR; - var i = 0; - var r; - var x; - while (u.cmpn(0) !== 0) { - var q = v.div(u); - r = v.sub(q.mul(u)); - x = x2.sub(q.mul(x1)); - var y = y2.sub(q.mul(y1)); + // IE doesn't make error fields non-enumerable + // http://msdn.microsoft.com/en-us/library/ie/dww52sbt(v=vs.94).aspx + if (isError(value) + && (keys.indexOf('message') >= 0 || keys.indexOf('description') >= 0)) { + return formatError(value); + } - if (!a1 && r.cmp(aprxSqrt) < 0) { - a0 = prevR.neg(); - b0 = x1; - a1 = r.neg(); - b1 = x; - } else if (a1 && ++i === 2) { - break; + // Some type of object without properties can be shortcutted. + if (keys.length === 0) { + if (isFunction(value)) { + var name = value.name ? ': ' + value.name : ''; + return ctx.stylize('[Function' + name + ']', 'special'); + } + if (isRegExp(value)) { + return ctx.stylize(RegExp.prototype.toString.call(value), 'regexp'); + } + if (isDate(value)) { + return ctx.stylize(Date.prototype.toString.call(value), 'date'); + } + if (isError(value)) { + return formatError(value); } - prevR = r; - - v = u; - u = r; - x2 = x1; - x1 = x; - y2 = y1; - y1 = y; } - a2 = r.neg(); - b2 = x; - var len1 = a1.sqr().add(b1.sqr()); - var len2 = a2.sqr().add(b2.sqr()); - if (len2.cmp(len1) >= 0) { - a2 = a0; - b2 = b0; + var base = '', array = false, braces = ['{', '}']; + + // Make Array say that they are Array + if (isArray(value)) { + array = true; + braces = ['[', ']']; } - // Normalize signs - if (a1.negative) { - a1 = a1.neg(); - b1 = b1.neg(); + // Make functions say that they are functions + if (isFunction(value)) { + var n = value.name ? ': ' + value.name : ''; + base = ' [Function' + n + ']'; } - if (a2.negative) { - a2 = a2.neg(); - b2 = b2.neg(); + + // Make RegExps say that they are RegExps + if (isRegExp(value)) { + base = ' ' + RegExp.prototype.toString.call(value); } - return [ - { a: a1, b: b1 }, - { a: a2, b: b2 } - ]; -}; + // Make dates with properties first say the date + if (isDate(value)) { + base = ' ' + Date.prototype.toUTCString.call(value); + } -ShortCurve.prototype._endoSplit = function _endoSplit(k) { - var basis = this.endo.basis; - var v1 = basis[0]; - var v2 = basis[1]; + // Make error with message first say the error + if (isError(value)) { + base = ' ' + formatError(value); + } - var c1 = v2.b.mul(k).divRound(this.n); - var c2 = v1.b.neg().mul(k).divRound(this.n); + if (keys.length === 0 && (!array || value.length == 0)) { + return braces[0] + base + braces[1]; + } - var p1 = c1.mul(v1.a); - var p2 = c2.mul(v2.a); - var q1 = c1.mul(v1.b); - var q2 = c2.mul(v2.b); + if (recurseTimes < 0) { + if (isRegExp(value)) { + return ctx.stylize(RegExp.prototype.toString.call(value), 'regexp'); + } else { + return ctx.stylize('[Object]', 'special'); + } + } - // Calculate answer - var k1 = k.sub(p1).sub(p2); - var k2 = q1.add(q2).neg(); - return { k1: k1, k2: k2 }; -}; + ctx.seen.push(value); -ShortCurve.prototype.pointFromX = function pointFromX(x, odd) { - x = new BN(x, 16); - if (!x.red) - x = x.toRed(this.red); + var output; + if (array) { + output = formatArray(ctx, value, recurseTimes, visibleKeys, keys); + } else { + output = keys.map(function(key) { + return formatProperty(ctx, value, recurseTimes, visibleKeys, key, array); + }); + } - var y2 = x.redSqr().redMul(x).redIAdd(x.redMul(this.a)).redIAdd(this.b); - var y = y2.redSqrt(); - if (y.redSqr().redSub(y2).cmp(this.zero) !== 0) - throw new Error('invalid point'); + ctx.seen.pop(); - // XXX Is there any way to tell if the number is odd without converting it - // to non-red form? - var isOdd = y.fromRed().isOdd(); - if (odd && !isOdd || !odd && isOdd) - y = y.redNeg(); + return reduceToSingleString(output, base, braces); +} - return this.point(x, y); -}; -ShortCurve.prototype.validate = function validate(point) { - if (point.inf) - return true; +function formatPrimitive(ctx, value) { + if (isUndefined(value)) + return ctx.stylize('undefined', 'undefined'); + if (isString(value)) { + var simple = '\'' + JSON.stringify(value).replace(/^"|"$/g, '') + .replace(/'/g, "\\'") + .replace(/\\"/g, '"') + '\''; + return ctx.stylize(simple, 'string'); + } + if (isNumber(value)) + return ctx.stylize('' + value, 'number'); + if (isBoolean(value)) + return ctx.stylize('' + value, 'boolean'); + // For some reason typeof null is "object", so special case here. + if (isNull(value)) + return ctx.stylize('null', 'null'); +} - var x = point.x; - var y = point.y; - var ax = this.a.redMul(x); - var rhs = x.redSqr().redMul(x).redIAdd(ax).redIAdd(this.b); - return y.redSqr().redISub(rhs).cmpn(0) === 0; -}; +function formatError(value) { + return '[' + Error.prototype.toString.call(value) + ']'; +} -ShortCurve.prototype._endoWnafMulAdd = - function _endoWnafMulAdd(points, coeffs, jacobianResult) { - var npoints = this._endoWnafT1; - var ncoeffs = this._endoWnafT2; - for (var i = 0; i < points.length; i++) { - var split = this._endoSplit(coeffs[i]); - var p = points[i]; - var beta = p._getBeta(); - if (split.k1.negative) { - split.k1.ineg(); - p = p.neg(true); - } - if (split.k2.negative) { - split.k2.ineg(); - beta = beta.neg(true); +function formatArray(ctx, value, recurseTimes, visibleKeys, keys) { + var output = []; + for (var i = 0, l = value.length; i < l; ++i) { + if (hasOwnProperty(value, String(i))) { + output.push(formatProperty(ctx, value, recurseTimes, visibleKeys, + String(i), true)); + } else { + output.push(''); } - - npoints[i * 2] = p; - npoints[i * 2 + 1] = beta; - ncoeffs[i * 2] = split.k1; - ncoeffs[i * 2 + 1] = split.k2; } - var res = this._wnafMulAdd(1, npoints, ncoeffs, i * 2, jacobianResult); + keys.forEach(function(key) { + if (!key.match(/^\d+$/)) { + output.push(formatProperty(ctx, value, recurseTimes, visibleKeys, + key, true)); + } + }); + return output; +} - // Clean-up references to points and coefficients - for (var j = 0; j < i * 2; j++) { - npoints[j] = null; - ncoeffs[j] = null; - } - return res; -}; -function Point(curve, x, y, isRed) { - Base.BasePoint.call(this, curve, 'affine'); - if (x === null && y === null) { - this.x = null; - this.y = null; - this.inf = true; +function formatProperty(ctx, value, recurseTimes, visibleKeys, key, array) { + var name, str, desc; + desc = Object.getOwnPropertyDescriptor(value, key) || { value: value[key] }; + if (desc.get) { + if (desc.set) { + str = ctx.stylize('[Getter/Setter]', 'special'); + } else { + str = ctx.stylize('[Getter]', 'special'); + } } else { - this.x = new BN(x, 16); - this.y = new BN(y, 16); - // Force redgomery representation when loading from JSON - if (isRed) { - this.x.forceRed(this.curve.red); - this.y.forceRed(this.curve.red); + if (desc.set) { + str = ctx.stylize('[Setter]', 'special'); } - if (!this.x.red) - this.x = this.x.toRed(this.curve.red); - if (!this.y.red) - this.y = this.y.toRed(this.curve.red); - this.inf = false; } -} -inherits(Point, Base.BasePoint); - -ShortCurve.prototype.point = function point(x, y, isRed) { - return new Point(this, x, y, isRed); -}; - -ShortCurve.prototype.pointFromJSON = function pointFromJSON(obj, red) { - return Point.fromJSON(this, obj, red); -}; - -Point.prototype._getBeta = function _getBeta() { - if (!this.curve.endo) - return; - - var pre = this.precomputed; - if (pre && pre.beta) - return pre.beta; - - var beta = this.curve.point(this.x.redMul(this.curve.endo.beta), this.y); - if (pre) { - var curve = this.curve; - var endoMul = function(p) { - return curve.point(p.x.redMul(curve.endo.beta), p.y); - }; - pre.beta = beta; - beta.precomputed = { - beta: null, - naf: pre.naf && { - wnd: pre.naf.wnd, - points: pre.naf.points.map(endoMul) - }, - doubles: pre.doubles && { - step: pre.doubles.step, - points: pre.doubles.points.map(endoMul) + if (!hasOwnProperty(visibleKeys, key)) { + name = '[' + key + ']'; + } + if (!str) { + if (ctx.seen.indexOf(desc.value) < 0) { + if (isNull(recurseTimes)) { + str = formatValue(ctx, desc.value, null); + } else { + str = formatValue(ctx, desc.value, recurseTimes - 1); } - }; + if (str.indexOf('\n') > -1) { + if (array) { + str = str.split('\n').map(function(line) { + return ' ' + line; + }).join('\n').substr(2); + } else { + str = '\n' + str.split('\n').map(function(line) { + return ' ' + line; + }).join('\n'); + } + } + } else { + str = ctx.stylize('[Circular]', 'special'); + } + } + if (isUndefined(name)) { + if (array && key.match(/^\d+$/)) { + return str; + } + name = JSON.stringify('' + key); + if (name.match(/^"([a-zA-Z_][a-zA-Z_0-9]*)"$/)) { + name = name.substr(1, name.length - 2); + name = ctx.stylize(name, 'name'); + } else { + name = name.replace(/'/g, "\\'") + .replace(/\\"/g, '"') + .replace(/(^"|"$)/g, "'"); + name = ctx.stylize(name, 'string'); + } } - return beta; -}; -Point.prototype.toJSON = function toJSON() { - if (!this.precomputed) - return [ this.x, this.y ]; + return name + ': ' + str; +} - return [ this.x, this.y, this.precomputed && { - doubles: this.precomputed.doubles && { - step: this.precomputed.doubles.step, - points: this.precomputed.doubles.points.slice(1) - }, - naf: this.precomputed.naf && { - wnd: this.precomputed.naf.wnd, - points: this.precomputed.naf.points.slice(1) - } - } ]; -}; -Point.fromJSON = function fromJSON(curve, obj, red) { - if (typeof obj === 'string') - obj = JSON.parse(obj); - var res = curve.point(obj[0], obj[1], red); - if (!obj[2]) - return res; +function reduceToSingleString(output, base, braces) { + var numLinesEst = 0; + var length = output.reduce(function(prev, cur) { + numLinesEst++; + if (cur.indexOf('\n') >= 0) numLinesEst++; + return prev + cur.replace(/\u001b\[\d\d?m/g, '').length + 1; + }, 0); - function obj2point(obj) { - return curve.point(obj[0], obj[1], red); + if (length > 60) { + return braces[0] + + (base === '' ? '' : base + '\n ') + + ' ' + + output.join(',\n ') + + ' ' + + braces[1]; } - var pre = obj[2]; - res.precomputed = { - beta: null, - doubles: pre.doubles && { - step: pre.doubles.step, - points: [ res ].concat(pre.doubles.points.map(obj2point)) - }, - naf: pre.naf && { - wnd: pre.naf.wnd, - points: [ res ].concat(pre.naf.points.map(obj2point)) - } - }; - return res; -}; + return braces[0] + base + ' ' + output.join(', ') + ' ' + braces[1]; +} -Point.prototype.inspect = function inspect() { - if (this.isInfinity()) - return ''; - return ''; -}; -Point.prototype.isInfinity = function isInfinity() { - return this.inf; -}; +// NOTE: These type checking functions intentionally don't use `instanceof` +// because it is fragile and can be easily faked with `Object.create()`. +function isArray(ar) { + return Array.isArray(ar); +} +exports.isArray = isArray; -Point.prototype.add = function add(p) { - // O + P = P - if (this.inf) - return p; +function isBoolean(arg) { + return typeof arg === 'boolean'; +} +exports.isBoolean = isBoolean; - // P + O = P - if (p.inf) - return this; +function isNull(arg) { + return arg === null; +} +exports.isNull = isNull; - // P + P = 2P - if (this.eq(p)) - return this.dbl(); +function isNullOrUndefined(arg) { + return arg == null; +} +exports.isNullOrUndefined = isNullOrUndefined; - // P + (-P) = O - if (this.neg().eq(p)) - return this.curve.point(null, null); +function isNumber(arg) { + return typeof arg === 'number'; +} +exports.isNumber = isNumber; - // P + Q = O - if (this.x.cmp(p.x) === 0) - return this.curve.point(null, null); +function isString(arg) { + return typeof arg === 'string'; +} +exports.isString = isString; - var c = this.y.redSub(p.y); - if (c.cmpn(0) !== 0) - c = c.redMul(this.x.redSub(p.x).redInvm()); - var nx = c.redSqr().redISub(this.x).redISub(p.x); - var ny = c.redMul(this.x.redSub(nx)).redISub(this.y); - return this.curve.point(nx, ny); -}; +function isSymbol(arg) { + return typeof arg === 'symbol'; +} +exports.isSymbol = isSymbol; -Point.prototype.dbl = function dbl() { - if (this.inf) - return this; +function isUndefined(arg) { + return arg === void 0; +} +exports.isUndefined = isUndefined; - // 2P = O - var ys1 = this.y.redAdd(this.y); - if (ys1.cmpn(0) === 0) - return this.curve.point(null, null); +function isRegExp(re) { + return isObject(re) && objectToString(re) === '[object RegExp]'; +} +exports.isRegExp = isRegExp; - var a = this.curve.a; +function isObject(arg) { + return typeof arg === 'object' && arg !== null; +} +exports.isObject = isObject; - var x2 = this.x.redSqr(); - var dyinv = ys1.redInvm(); - var c = x2.redAdd(x2).redIAdd(x2).redIAdd(a).redMul(dyinv); +function isDate(d) { + return isObject(d) && objectToString(d) === '[object Date]'; +} +exports.isDate = isDate; - var nx = c.redSqr().redISub(this.x.redAdd(this.x)); - var ny = c.redMul(this.x.redSub(nx)).redISub(this.y); - return this.curve.point(nx, ny); -}; +function isError(e) { + return isObject(e) && + (objectToString(e) === '[object Error]' || e instanceof Error); +} +exports.isError = isError; -Point.prototype.getX = function getX() { - return this.x.fromRed(); -}; +function isFunction(arg) { + return typeof arg === 'function'; +} +exports.isFunction = isFunction; -Point.prototype.getY = function getY() { - return this.y.fromRed(); -}; +function isPrimitive(arg) { + return arg === null || + typeof arg === 'boolean' || + typeof arg === 'number' || + typeof arg === 'string' || + typeof arg === 'symbol' || // ES6 symbol + typeof arg === 'undefined'; +} +exports.isPrimitive = isPrimitive; -Point.prototype.mul = function mul(k) { - k = new BN(k, 16); +exports.isBuffer = require('./support/isBuffer'); - if (this._hasDoubles(k)) - return this.curve._fixedNafMul(this, k); - else if (this.curve.endo) - return this.curve._endoWnafMulAdd([ this ], [ k ]); - else - return this.curve._wnafMul(this, k); -}; +function objectToString(o) { + return Object.prototype.toString.call(o); +} -Point.prototype.mulAdd = function mulAdd(k1, p2, k2) { - var points = [ this, p2 ]; - var coeffs = [ k1, k2 ]; - if (this.curve.endo) - return this.curve._endoWnafMulAdd(points, coeffs); - else - return this.curve._wnafMulAdd(1, points, coeffs, 2); -}; -Point.prototype.jmulAdd = function jmulAdd(k1, p2, k2) { - var points = [ this, p2 ]; - var coeffs = [ k1, k2 ]; - if (this.curve.endo) - return this.curve._endoWnafMulAdd(points, coeffs, true); - else - return this.curve._wnafMulAdd(1, points, coeffs, 2, true); -}; +function pad(n) { + return n < 10 ? '0' + n.toString(10) : n.toString(10); +} -Point.prototype.eq = function eq(p) { - return this === p || - this.inf === p.inf && - (this.inf || this.x.cmp(p.x) === 0 && this.y.cmp(p.y) === 0); -}; -Point.prototype.neg = function neg(_precompute) { - if (this.inf) - return this; +var months = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', + 'Oct', 'Nov', 'Dec']; - var res = this.curve.point(this.x, this.y.redNeg()); - if (_precompute && this.precomputed) { - var pre = this.precomputed; - var negate = function(p) { - return p.neg(); - }; - res.precomputed = { - naf: pre.naf && { - wnd: pre.naf.wnd, - points: pre.naf.points.map(negate) - }, - doubles: pre.doubles && { - step: pre.doubles.step, - points: pre.doubles.points.map(negate) - } - }; - } - return res; -}; +// 26 Feb 16:19:34 +function timestamp() { + var d = new Date(); + var time = [pad(d.getHours()), + pad(d.getMinutes()), + pad(d.getSeconds())].join(':'); + return [d.getDate(), months[d.getMonth()], time].join(' '); +} -Point.prototype.toJ = function toJ() { - if (this.inf) - return this.curve.jpoint(null, null, null); - var res = this.curve.jpoint(this.x, this.y, this.curve.one); - return res; +// log is just a thin wrapper to console.log that prepends a timestamp +exports.log = function() { + console.log('%s - %s', timestamp(), exports.format.apply(exports, arguments)); }; -function JPoint(curve, x, y, z) { - Base.BasePoint.call(this, curve, 'jacobian'); - if (x === null && y === null && z === null) { - this.x = this.curve.one; - this.y = this.curve.one; - this.z = new BN(0); - } else { - this.x = new BN(x, 16); - this.y = new BN(y, 16); - this.z = new BN(z, 16); - } - if (!this.x.red) - this.x = this.x.toRed(this.curve.red); - if (!this.y.red) - this.y = this.y.toRed(this.curve.red); - if (!this.z.red) - this.z = this.z.toRed(this.curve.red); - this.zOne = this.z === this.curve.one; -} -inherits(JPoint, Base.BasePoint); +/** + * Inherit the prototype methods from one constructor into another. + * + * The Function.prototype.inherits from lang.js rewritten as a standalone + * function (not on Function.prototype). NOTE: If this file is to be loaded + * during bootstrapping this function needs to be rewritten using some native + * functions as prototype setup using normal JavaScript does not work as + * expected during bootstrapping (see mirror.js in r114903). + * + * @param {function} ctor Constructor function which needs to inherit the + * prototype. + * @param {function} superCtor Constructor function to inherit prototype from. + */ +exports.inherits = require('inherits'); -ShortCurve.prototype.jpoint = function jpoint(x, y, z) { - return new JPoint(this, x, y, z); -}; +exports._extend = function(origin, add) { + // Don't do anything if add isn't an object + if (!add || !isObject(add)) return origin; -JPoint.prototype.toP = function toP() { - if (this.isInfinity()) - return this.curve.point(null, null); + var keys = Object.keys(add); + var i = keys.length; + while (i--) { + origin[keys[i]] = add[keys[i]]; + } + return origin; +}; - var zinv = this.z.redInvm(); - var zinv2 = zinv.redSqr(); - var ax = this.x.redMul(zinv2); - var ay = this.y.redMul(zinv2).redMul(zinv); +function hasOwnProperty(obj, prop) { + return Object.prototype.hasOwnProperty.call(obj, prop); +} - return this.curve.point(ax, ay); -}; +}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {}) +},{"./support/isBuffer":62,"_process":172,"inherits":153}],64:[function(require,module,exports){ +// base-x encoding / decoding +// Copyright (c) 2018 base-x contributors +// Copyright (c) 2014-2018 The Bitcoin Core developers (base58.cpp) +// Distributed under the MIT software license, see the accompanying +// file LICENSE or http://www.opensource.org/licenses/mit-license.php. -JPoint.prototype.neg = function neg() { - return this.curve.jpoint(this.x, this.y.redNeg(), this.z); -}; +const Buffer = require('safe-buffer').Buffer -JPoint.prototype.add = function add(p) { - // O + P = P - if (this.isInfinity()) - return p; +module.exports = function base (ALPHABET) { + if (ALPHABET.length >= 255) throw new TypeError('Alphabet too long') - // P + O = P - if (p.isInfinity()) - return this; + const BASE_MAP = new Uint8Array(256) + BASE_MAP.fill(255) - // 12M + 4S + 7A - var pz2 = p.z.redSqr(); - var z2 = this.z.redSqr(); - var u1 = this.x.redMul(pz2); - var u2 = p.x.redMul(z2); - var s1 = this.y.redMul(pz2.redMul(p.z)); - var s2 = p.y.redMul(z2.redMul(this.z)); + for (let i = 0; i < ALPHABET.length; i++) { + const x = ALPHABET.charAt(i) + const xc = x.charCodeAt(0) - var h = u1.redSub(u2); - var r = s1.redSub(s2); - if (h.cmpn(0) === 0) { - if (r.cmpn(0) !== 0) - return this.curve.jpoint(null, null, null); - else - return this.dbl(); + if (BASE_MAP[xc] !== 255) throw new TypeError(x + ' is ambiguous') + BASE_MAP[xc] = i } - var h2 = h.redSqr(); - var h3 = h2.redMul(h); - var v = u1.redMul(h2); - - var nx = r.redSqr().redIAdd(h3).redISub(v).redISub(v); - var ny = r.redMul(v.redISub(nx)).redISub(s1.redMul(h3)); - var nz = this.z.redMul(p.z).redMul(h); + const BASE = ALPHABET.length + const LEADER = ALPHABET.charAt(0) + const FACTOR = Math.log(BASE) / Math.log(256) // log(BASE) / log(256), rounded up + const iFACTOR = Math.log(256) / Math.log(BASE) // log(256) / log(BASE), rounded up - return this.curve.jpoint(nx, ny, nz); -}; + function encode (source) { + if (!Buffer.isBuffer(source)) throw new TypeError('Expected Buffer') + if (source.length === 0) return '' -JPoint.prototype.mixedAdd = function mixedAdd(p) { - // O + P = P - if (this.isInfinity()) - return p.toJ(); + // Skip & count leading zeroes. + let zeroes = 0 + let length = 0 + let pbegin = 0 + const pend = source.length - // P + O = P - if (p.isInfinity()) - return this; + while (pbegin !== pend && source[pbegin] === 0) { + pbegin++ + zeroes++ + } - // 8M + 3S + 7A - var z2 = this.z.redSqr(); - var u1 = this.x; - var u2 = p.x.redMul(z2); - var s1 = this.y; - var s2 = p.y.redMul(z2).redMul(this.z); + // Allocate enough space in big-endian base58 representation. + const size = ((pend - pbegin) * iFACTOR + 1) >>> 0 + const b58 = new Uint8Array(size) - var h = u1.redSub(u2); - var r = s1.redSub(s2); - if (h.cmpn(0) === 0) { - if (r.cmpn(0) !== 0) - return this.curve.jpoint(null, null, null); - else - return this.dbl(); - } + // Process the bytes. + while (pbegin !== pend) { + let carry = source[pbegin] - var h2 = h.redSqr(); - var h3 = h2.redMul(h); - var v = u1.redMul(h2); + // Apply "b58 = b58 * 256 + ch". + let i = 0 + for (let it = size - 1; (carry !== 0 || i < length) && (it !== -1); it--, i++) { + carry += (256 * b58[it]) >>> 0 + b58[it] = (carry % BASE) >>> 0 + carry = (carry / BASE) >>> 0 + } - var nx = r.redSqr().redIAdd(h3).redISub(v).redISub(v); - var ny = r.redMul(v.redISub(nx)).redISub(s1.redMul(h3)); - var nz = this.z.redMul(h); + if (carry !== 0) throw new Error('Non-zero carry') + length = i + pbegin++ + } - return this.curve.jpoint(nx, ny, nz); -}; + // Skip leading zeroes in base58 result. + let it = size - length + while (it !== size && b58[it] === 0) { + it++ + } -JPoint.prototype.dblp = function dblp(pow) { - if (pow === 0) - return this; - if (this.isInfinity()) - return this; - if (!pow) - return this.dbl(); + // Translate the result into a string. + let str = LEADER.repeat(zeroes) + for (; it < size; ++it) str += ALPHABET.charAt(b58[it]) - if (this.curve.zeroA || this.curve.threeA) { - var r = this; - for (var i = 0; i < pow; i++) - r = r.dbl(); - return r; + return str } - // 1M + 2S + 1A + N * (4S + 5M + 8A) - // N = 1 => 6M + 6S + 9A - var a = this.curve.a; - var tinv = this.curve.tinv; + function decodeUnsafe (source) { + if (typeof source !== 'string') throw new TypeError('Expected String') + if (source.length === 0) return Buffer.alloc(0) - var jx = this.x; - var jy = this.y; - var jz = this.z; - var jz4 = jz.redSqr().redSqr(); - - // Reuse results - var jyd = jy.redAdd(jy); - for (var i = 0; i < pow; i++) { - var jx2 = jx.redSqr(); - var jyd2 = jyd.redSqr(); - var jyd4 = jyd2.redSqr(); - var c = jx2.redAdd(jx2).redIAdd(jx2).redIAdd(a.redMul(jz4)); + let psz = 0 - var t1 = jx.redMul(jyd2); - var nx = c.redSqr().redISub(t1.redAdd(t1)); - var t2 = t1.redISub(nx); - var dny = c.redMul(t2); - dny = dny.redIAdd(dny).redISub(jyd4); - var nz = jyd.redMul(jz); - if (i + 1 < pow) - jz4 = jz4.redMul(jyd4); + // Skip leading spaces. + if (source[psz] === ' ') return - jx = nx; - jz = nz; - jyd = dny; - } + // Skip and count leading '1's. + let zeroes = 0 + let length = 0 + while (source[psz] === LEADER) { + zeroes++ + psz++ + } - return this.curve.jpoint(jx, jyd.redMul(tinv), jz); -}; + // Allocate enough space in big-endian base256 representation. + const size = (((source.length - psz) * FACTOR) + 1) >>> 0 // log(58) / log(256), rounded up. + const b256 = new Uint8Array(size) -JPoint.prototype.dbl = function dbl() { - if (this.isInfinity()) - return this; + // Process the characters. + while (source[psz]) { + // Decode character + let carry = BASE_MAP[source.charCodeAt(psz)] - if (this.curve.zeroA) - return this._zeroDbl(); - else if (this.curve.threeA) - return this._threeDbl(); - else - return this._dbl(); -}; + // Invalid character + if (carry === 255) return -JPoint.prototype._zeroDbl = function _zeroDbl() { - var nx; - var ny; - var nz; - // Z = 1 - if (this.zOne) { - // hyperelliptic.org/EFD/g1p/auto-shortw-jacobian-0.html - // #doubling-mdbl-2007-bl - // 1M + 5S + 14A + let i = 0 + for (let it = size - 1; (carry !== 0 || i < length) && (it !== -1); it--, i++) { + carry += (BASE * b256[it]) >>> 0 + b256[it] = (carry % 256) >>> 0 + carry = (carry / 256) >>> 0 + } - // XX = X1^2 - var xx = this.x.redSqr(); - // YY = Y1^2 - var yy = this.y.redSqr(); - // YYYY = YY^2 - var yyyy = yy.redSqr(); - // S = 2 * ((X1 + YY)^2 - XX - YYYY) - var s = this.x.redAdd(yy).redSqr().redISub(xx).redISub(yyyy); - s = s.redIAdd(s); - // M = 3 * XX + a; a = 0 - var m = xx.redAdd(xx).redIAdd(xx); - // T = M ^ 2 - 2*S - var t = m.redSqr().redISub(s).redISub(s); + if (carry !== 0) throw new Error('Non-zero carry') + length = i + psz++ + } - // 8 * YYYY - var yyyy8 = yyyy.redIAdd(yyyy); - yyyy8 = yyyy8.redIAdd(yyyy8); - yyyy8 = yyyy8.redIAdd(yyyy8); + // Skip trailing spaces. + if (source[psz] === ' ') return - // X3 = T - nx = t; - // Y3 = M * (S - T) - 8 * YYYY - ny = m.redMul(s.redISub(t)).redISub(yyyy8); - // Z3 = 2*Y1 - nz = this.y.redAdd(this.y); - } else { - // hyperelliptic.org/EFD/g1p/auto-shortw-jacobian-0.html - // #doubling-dbl-2009-l - // 2M + 5S + 13A + // Skip leading zeroes in b256. + let it = size - length + while (it !== size && b256[it] === 0) { + it++ + } - // A = X1^2 - var a = this.x.redSqr(); - // B = Y1^2 - var b = this.y.redSqr(); - // C = B^2 - var c = b.redSqr(); - // D = 2 * ((X1 + B)^2 - A - C) - var d = this.x.redAdd(b).redSqr().redISub(a).redISub(c); - d = d.redIAdd(d); - // E = 3 * A - var e = a.redAdd(a).redIAdd(a); - // F = E^2 - var f = e.redSqr(); + const vch = Buffer.allocUnsafe(zeroes + (size - it)) + vch.fill(0x00, 0, zeroes) - // 8 * C - var c8 = c.redIAdd(c); - c8 = c8.redIAdd(c8); - c8 = c8.redIAdd(c8); + let j = zeroes + while (it !== size) { + vch[j++] = b256[it++] + } - // X3 = F - 2 * D - nx = f.redISub(d).redISub(d); - // Y3 = E * (D - X3) - 8 * C - ny = e.redMul(d.redISub(nx)).redISub(c8); - // Z3 = 2 * Y1 * Z1 - nz = this.y.redMul(this.z); - nz = nz.redIAdd(nz); + return vch } - return this.curve.jpoint(nx, ny, nz); -}; - -JPoint.prototype._threeDbl = function _threeDbl() { - var nx; - var ny; - var nz; - // Z = 1 - if (this.zOne) { - // hyperelliptic.org/EFD/g1p/auto-shortw-jacobian-3.html - // #doubling-mdbl-2007-bl - // 1M + 5S + 15A + function decode (string) { + const buffer = decodeUnsafe(string) + if (buffer) return buffer - // XX = X1^2 - var xx = this.x.redSqr(); - // YY = Y1^2 - var yy = this.y.redSqr(); - // YYYY = YY^2 - var yyyy = yy.redSqr(); - // S = 2 * ((X1 + YY)^2 - XX - YYYY) - var s = this.x.redAdd(yy).redSqr().redISub(xx).redISub(yyyy); - s = s.redIAdd(s); - // M = 3 * XX + a - var m = xx.redAdd(xx).redIAdd(xx).redIAdd(this.curve.a); - // T = M^2 - 2 * S - var t = m.redSqr().redISub(s).redISub(s); - // X3 = T - nx = t; - // Y3 = M * (S - T) - 8 * YYYY - var yyyy8 = yyyy.redIAdd(yyyy); - yyyy8 = yyyy8.redIAdd(yyyy8); - yyyy8 = yyyy8.redIAdd(yyyy8); - ny = m.redMul(s.redISub(t)).redISub(yyyy8); - // Z3 = 2 * Y1 - nz = this.y.redAdd(this.y); - } else { - // hyperelliptic.org/EFD/g1p/auto-shortw-jacobian-3.html#doubling-dbl-2001-b - // 3M + 5S + throw new Error('Non-base' + BASE + ' character') + } - // delta = Z1^2 - var delta = this.z.redSqr(); - // gamma = Y1^2 - var gamma = this.y.redSqr(); - // beta = X1 * gamma - var beta = this.x.redMul(gamma); - // alpha = 3 * (X1 - delta) * (X1 + delta) - var alpha = this.x.redSub(delta).redMul(this.x.redAdd(delta)); - alpha = alpha.redAdd(alpha).redIAdd(alpha); - // X3 = alpha^2 - 8 * beta - var beta4 = beta.redIAdd(beta); - beta4 = beta4.redIAdd(beta4); - var beta8 = beta4.redAdd(beta4); - nx = alpha.redSqr().redISub(beta8); - // Z3 = (Y1 + Z1)^2 - gamma - delta - nz = this.y.redAdd(this.z).redSqr().redISub(gamma).redISub(delta); - // Y3 = alpha * (4 * beta - X3) - 8 * gamma^2 - var ggamma8 = gamma.redSqr(); - ggamma8 = ggamma8.redIAdd(ggamma8); - ggamma8 = ggamma8.redIAdd(ggamma8); - ggamma8 = ggamma8.redIAdd(ggamma8); - ny = alpha.redMul(beta4.redISub(nx)).redISub(ggamma8); + return { + encode: encode, + decodeUnsafe: decodeUnsafe, + decode: decode } +} - return this.curve.jpoint(nx, ny, nz); -}; +},{"safe-buffer":199}],65:[function(require,module,exports){ +'use strict' -JPoint.prototype._dbl = function _dbl() { - var a = this.curve.a; +exports.byteLength = byteLength +exports.toByteArray = toByteArray +exports.fromByteArray = fromByteArray - // 4M + 6S + 10A - var jx = this.x; - var jy = this.y; - var jz = this.z; - var jz4 = jz.redSqr().redSqr(); +var lookup = [] +var revLookup = [] +var Arr = typeof Uint8Array !== 'undefined' ? Uint8Array : Array - var jx2 = jx.redSqr(); - var jy2 = jy.redSqr(); +var code = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/' +for (var i = 0, len = code.length; i < len; ++i) { + lookup[i] = code[i] + revLookup[code.charCodeAt(i)] = i +} - var c = jx2.redAdd(jx2).redIAdd(jx2).redIAdd(a.redMul(jz4)); +// Support decoding URL-safe base64 strings, as Node.js does. +// See: https://en.wikipedia.org/wiki/Base64#URL_applications +revLookup['-'.charCodeAt(0)] = 62 +revLookup['_'.charCodeAt(0)] = 63 - var jxd4 = jx.redAdd(jx); - jxd4 = jxd4.redIAdd(jxd4); - var t1 = jxd4.redMul(jy2); - var nx = c.redSqr().redISub(t1.redAdd(t1)); - var t2 = t1.redISub(nx); +function getLens (b64) { + var len = b64.length - var jyd8 = jy2.redSqr(); - jyd8 = jyd8.redIAdd(jyd8); - jyd8 = jyd8.redIAdd(jyd8); - jyd8 = jyd8.redIAdd(jyd8); - var ny = c.redMul(t2).redISub(jyd8); - var nz = jy.redAdd(jy).redMul(jz); + if (len % 4 > 0) { + throw new Error('Invalid string. Length must be a multiple of 4') + } - return this.curve.jpoint(nx, ny, nz); -}; + // Trim off extra bytes after placeholder bytes are found + // See: https://github.com/beatgammit/base64-js/issues/42 + var validLen = b64.indexOf('=') + if (validLen === -1) validLen = len -JPoint.prototype.trpl = function trpl() { - if (!this.curve.zeroA) - return this.dbl().add(this); + var placeHoldersLen = validLen === len + ? 0 + : 4 - (validLen % 4) - // hyperelliptic.org/EFD/g1p/auto-shortw-jacobian-0.html#tripling-tpl-2007-bl - // 5M + 10S + ... + return [validLen, placeHoldersLen] +} - // XX = X1^2 - var xx = this.x.redSqr(); - // YY = Y1^2 - var yy = this.y.redSqr(); - // ZZ = Z1^2 - var zz = this.z.redSqr(); - // YYYY = YY^2 - var yyyy = yy.redSqr(); - // M = 3 * XX + a * ZZ2; a = 0 - var m = xx.redAdd(xx).redIAdd(xx); - // MM = M^2 - var mm = m.redSqr(); - // E = 6 * ((X1 + YY)^2 - XX - YYYY) - MM - var e = this.x.redAdd(yy).redSqr().redISub(xx).redISub(yyyy); - e = e.redIAdd(e); - e = e.redAdd(e).redIAdd(e); - e = e.redISub(mm); - // EE = E^2 - var ee = e.redSqr(); - // T = 16*YYYY - var t = yyyy.redIAdd(yyyy); - t = t.redIAdd(t); - t = t.redIAdd(t); - t = t.redIAdd(t); - // U = (M + E)^2 - MM - EE - T - var u = m.redIAdd(e).redSqr().redISub(mm).redISub(ee).redISub(t); - // X3 = 4 * (X1 * EE - 4 * YY * U) - var yyu4 = yy.redMul(u); - yyu4 = yyu4.redIAdd(yyu4); - yyu4 = yyu4.redIAdd(yyu4); - var nx = this.x.redMul(ee).redISub(yyu4); - nx = nx.redIAdd(nx); - nx = nx.redIAdd(nx); - // Y3 = 8 * Y1 * (U * (T - U) - E * EE) - var ny = this.y.redMul(u.redMul(t.redISub(u)).redISub(e.redMul(ee))); - ny = ny.redIAdd(ny); - ny = ny.redIAdd(ny); - ny = ny.redIAdd(ny); - // Z3 = (Z1 + E)^2 - ZZ - EE - var nz = this.z.redAdd(e).redSqr().redISub(zz).redISub(ee); +// base64 is 4/3 + up to two characters of the original data +function byteLength (b64) { + var lens = getLens(b64) + var validLen = lens[0] + var placeHoldersLen = lens[1] + return ((validLen + placeHoldersLen) * 3 / 4) - placeHoldersLen +} - return this.curve.jpoint(nx, ny, nz); -}; +function _byteLength (b64, validLen, placeHoldersLen) { + return ((validLen + placeHoldersLen) * 3 / 4) - placeHoldersLen +} -JPoint.prototype.mul = function mul(k, kbase) { - k = new BN(k, kbase); +function toByteArray (b64) { + var tmp + var lens = getLens(b64) + var validLen = lens[0] + var placeHoldersLen = lens[1] - return this.curve._wnafMul(this, k); -}; + var arr = new Arr(_byteLength(b64, validLen, placeHoldersLen)) -JPoint.prototype.eq = function eq(p) { - if (p.type === 'affine') - return this.eq(p.toJ()); + var curByte = 0 - if (this === p) - return true; + // if there are placeholders, only get up to the last complete 4 chars + var len = placeHoldersLen > 0 + ? validLen - 4 + : validLen - // x1 * z2^2 == x2 * z1^2 - var z2 = this.z.redSqr(); - var pz2 = p.z.redSqr(); - if (this.x.redMul(pz2).redISub(p.x.redMul(z2)).cmpn(0) !== 0) - return false; + for (var i = 0; i < len; i += 4) { + tmp = + (revLookup[b64.charCodeAt(i)] << 18) | + (revLookup[b64.charCodeAt(i + 1)] << 12) | + (revLookup[b64.charCodeAt(i + 2)] << 6) | + revLookup[b64.charCodeAt(i + 3)] + arr[curByte++] = (tmp >> 16) & 0xFF + arr[curByte++] = (tmp >> 8) & 0xFF + arr[curByte++] = tmp & 0xFF + } - // y1 * z2^3 == y2 * z1^3 - var z3 = z2.redMul(this.z); - var pz3 = pz2.redMul(p.z); - return this.y.redMul(pz3).redISub(p.y.redMul(z3)).cmpn(0) === 0; -}; + if (placeHoldersLen === 2) { + tmp = + (revLookup[b64.charCodeAt(i)] << 2) | + (revLookup[b64.charCodeAt(i + 1)] >> 4) + arr[curByte++] = tmp & 0xFF + } -JPoint.prototype.eqXToP = function eqXToP(x) { - var zs = this.z.redSqr(); - var rx = x.toRed(this.curve.red).redMul(zs); - if (this.x.cmp(rx) === 0) - return true; + if (placeHoldersLen === 1) { + tmp = + (revLookup[b64.charCodeAt(i)] << 10) | + (revLookup[b64.charCodeAt(i + 1)] << 4) | + (revLookup[b64.charCodeAt(i + 2)] >> 2) + arr[curByte++] = (tmp >> 8) & 0xFF + arr[curByte++] = tmp & 0xFF + } - var xc = x.clone(); - var t = this.curve.redN.redMul(zs); - for (;;) { - xc.iadd(this.curve.n); - if (xc.cmp(this.curve.p) >= 0) - return false; + return arr +} - rx.redIAdd(t); - if (this.x.cmp(rx) === 0) - return true; +function tripletToBase64 (num) { + return lookup[num >> 18 & 0x3F] + + lookup[num >> 12 & 0x3F] + + lookup[num >> 6 & 0x3F] + + lookup[num & 0x3F] +} + +function encodeChunk (uint8, start, end) { + var tmp + var output = [] + for (var i = start; i < end; i += 3) { + tmp = + ((uint8[i] << 16) & 0xFF0000) + + ((uint8[i + 1] << 8) & 0xFF00) + + (uint8[i + 2] & 0xFF) + output.push(tripletToBase64(tmp)) } -}; + return output.join('') +} -JPoint.prototype.inspect = function inspect() { - if (this.isInfinity()) - return ''; - return ''; -}; +function fromByteArray (uint8) { + var tmp + var len = uint8.length + var extraBytes = len % 3 // if we have 1 byte left, pad 2 bytes + var parts = [] + var maxChunkLength = 16383 // must be multiple of 3 -JPoint.prototype.isInfinity = function isInfinity() { - // XXX This code assumes that zero is always zero in red - return this.z.cmpn(0) === 0; -}; + // go through the array every three bytes, we'll deal with trailing stuff later + for (var i = 0, len2 = len - extraBytes; i < len2; i += maxChunkLength) { + parts.push(encodeChunk( + uint8, i, (i + maxChunkLength) > len2 ? len2 : (i + maxChunkLength) + )) + } -},{"../../elliptic":71,"../curve":74,"bn.js":20,"inherits":104}],77:[function(require,module,exports){ -'use strict'; + // pad the end with zeros, but make sure to not forget the extra bytes + if (extraBytes === 1) { + tmp = uint8[len - 1] + parts.push( + lookup[tmp >> 2] + + lookup[(tmp << 4) & 0x3F] + + '==' + ) + } else if (extraBytes === 2) { + tmp = (uint8[len - 2] << 8) + uint8[len - 1] + parts.push( + lookup[tmp >> 10] + + lookup[(tmp >> 4) & 0x3F] + + lookup[(tmp << 2) & 0x3F] + + '=' + ) + } -var curves = exports; + return parts.join('') +} -var hash = require('hash.js'); -var elliptic = require('../elliptic'); +},{}],66:[function(require,module,exports){ +(function (module, exports) { + 'use strict'; -var assert = elliptic.utils.assert; + // Utils + function assert (val, msg) { + if (!val) throw new Error(msg || 'Assertion failed'); + } -function PresetCurve(options) { - if (options.type === 'short') - this.curve = new elliptic.curve.short(options); - else if (options.type === 'edwards') - this.curve = new elliptic.curve.edwards(options); - else - this.curve = new elliptic.curve.mont(options); - this.g = this.curve.g; - this.n = this.curve.n; - this.hash = options.hash; + // Could use `inherits` module, but don't want to move from single file + // architecture yet. + function inherits (ctor, superCtor) { + ctor.super_ = superCtor; + var TempCtor = function () {}; + TempCtor.prototype = superCtor.prototype; + ctor.prototype = new TempCtor(); + ctor.prototype.constructor = ctor; + } - assert(this.g.validate(), 'Invalid curve'); - assert(this.g.mul(this.n).isInfinity(), 'Invalid curve, G*N != O'); -} -curves.PresetCurve = PresetCurve; + // BN -function defineCurve(name, options) { - Object.defineProperty(curves, name, { - configurable: true, - enumerable: true, - get: function() { - var curve = new PresetCurve(options); - Object.defineProperty(curves, name, { - configurable: true, - enumerable: true, - value: curve - }); - return curve; + function BN (number, base, endian) { + if (BN.isBN(number)) { + return number; } - }); -} -defineCurve('p192', { - type: 'short', - prime: 'p192', - p: 'ffffffff ffffffff ffffffff fffffffe ffffffff ffffffff', - a: 'ffffffff ffffffff ffffffff fffffffe ffffffff fffffffc', - b: '64210519 e59c80e7 0fa7e9ab 72243049 feb8deec c146b9b1', - n: 'ffffffff ffffffff ffffffff 99def836 146bc9b1 b4d22831', - hash: hash.sha256, - gRed: false, - g: [ - '188da80e b03090f6 7cbf20eb 43a18800 f4ff0afd 82ff1012', - '07192b95 ffc8da78 631011ed 6b24cdd5 73f977a1 1e794811' - ] -}); + this.negative = 0; + this.words = null; + this.length = 0; -defineCurve('p224', { - type: 'short', - prime: 'p224', - p: 'ffffffff ffffffff ffffffff ffffffff 00000000 00000000 00000001', - a: 'ffffffff ffffffff ffffffff fffffffe ffffffff ffffffff fffffffe', - b: 'b4050a85 0c04b3ab f5413256 5044b0b7 d7bfd8ba 270b3943 2355ffb4', - n: 'ffffffff ffffffff ffffffff ffff16a2 e0b8f03e 13dd2945 5c5c2a3d', - hash: hash.sha256, - gRed: false, - g: [ - 'b70e0cbd 6bb4bf7f 321390b9 4a03c1d3 56c21122 343280d6 115c1d21', - 'bd376388 b5f723fb 4c22dfe6 cd4375a0 5a074764 44d58199 85007e34' - ] -}); + // Reduction context + this.red = null; -defineCurve('p256', { - type: 'short', - prime: null, - p: 'ffffffff 00000001 00000000 00000000 00000000 ffffffff ffffffff ffffffff', - a: 'ffffffff 00000001 00000000 00000000 00000000 ffffffff ffffffff fffffffc', - b: '5ac635d8 aa3a93e7 b3ebbd55 769886bc 651d06b0 cc53b0f6 3bce3c3e 27d2604b', - n: 'ffffffff 00000000 ffffffff ffffffff bce6faad a7179e84 f3b9cac2 fc632551', - hash: hash.sha256, - gRed: false, - g: [ - '6b17d1f2 e12c4247 f8bce6e5 63a440f2 77037d81 2deb33a0 f4a13945 d898c296', - '4fe342e2 fe1a7f9b 8ee7eb4a 7c0f9e16 2bce3357 6b315ece cbb64068 37bf51f5' - ] -}); + if (number !== null) { + if (base === 'le' || base === 'be') { + endian = base; + base = 10; + } -defineCurve('p384', { - type: 'short', - prime: null, - p: 'ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ' + - 'fffffffe ffffffff 00000000 00000000 ffffffff', - a: 'ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ' + - 'fffffffe ffffffff 00000000 00000000 fffffffc', - b: 'b3312fa7 e23ee7e4 988e056b e3f82d19 181d9c6e fe814112 0314088f ' + - '5013875a c656398d 8a2ed19d 2a85c8ed d3ec2aef', - n: 'ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff c7634d81 ' + - 'f4372ddf 581a0db2 48b0a77a ecec196a ccc52973', - hash: hash.sha384, - gRed: false, - g: [ - 'aa87ca22 be8b0537 8eb1c71e f320ad74 6e1d3b62 8ba79b98 59f741e0 82542a38 ' + - '5502f25d bf55296c 3a545e38 72760ab7', - '3617de4a 96262c6f 5d9e98bf 9292dc29 f8f41dbd 289a147c e9da3113 b5f0b8c0 ' + - '0a60b1ce 1d7e819d 7a431d7c 90ea0e5f' - ] -}); + this._init(number || 0, base || 10, endian || 'be'); + } + } + if (typeof module === 'object') { + module.exports = BN; + } else { + exports.BN = BN; + } -defineCurve('p521', { - type: 'short', - prime: null, - p: '000001ff ffffffff ffffffff ffffffff ffffffff ffffffff ' + - 'ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ' + - 'ffffffff ffffffff ffffffff ffffffff ffffffff', - a: '000001ff ffffffff ffffffff ffffffff ffffffff ffffffff ' + - 'ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ' + - 'ffffffff ffffffff ffffffff ffffffff fffffffc', - b: '00000051 953eb961 8e1c9a1f 929a21a0 b68540ee a2da725b ' + - '99b315f3 b8b48991 8ef109e1 56193951 ec7e937b 1652c0bd ' + - '3bb1bf07 3573df88 3d2c34f1 ef451fd4 6b503f00', - n: '000001ff ffffffff ffffffff ffffffff ffffffff ffffffff ' + - 'ffffffff ffffffff fffffffa 51868783 bf2f966b 7fcc0148 ' + - 'f709a5d0 3bb5c9b8 899c47ae bb6fb71e 91386409', - hash: hash.sha512, - gRed: false, - g: [ - '000000c6 858e06b7 0404e9cd 9e3ecb66 2395b442 9c648139 ' + - '053fb521 f828af60 6b4d3dba a14b5e77 efe75928 fe1dc127 ' + - 'a2ffa8de 3348b3c1 856a429b f97e7e31 c2e5bd66', - '00000118 39296a78 9a3bc004 5c8a5fb4 2c7d1bd9 98f54449 ' + - '579b4468 17afbd17 273e662c 97ee7299 5ef42640 c550b901 ' + - '3fad0761 353c7086 a272c240 88be9476 9fd16650' - ] -}); + BN.BN = BN; + BN.wordSize = 26; -defineCurve('curve25519', { - type: 'mont', - prime: 'p25519', - p: '7fffffffffffffff ffffffffffffffff ffffffffffffffff ffffffffffffffed', - a: '76d06', - b: '1', - n: '1000000000000000 0000000000000000 14def9dea2f79cd6 5812631a5cf5d3ed', - hash: hash.sha256, - gRed: false, - g: [ - '9' - ] -}); + var Buffer; + try { + Buffer = require('buffer').Buffer; + } catch (e) { + } -defineCurve('ed25519', { - type: 'edwards', - prime: 'p25519', - p: '7fffffffffffffff ffffffffffffffff ffffffffffffffff ffffffffffffffed', - a: '-1', - c: '1', - // -121665 * (121666^(-1)) (mod P) - d: '52036cee2b6ffe73 8cc740797779e898 00700a4d4141d8ab 75eb4dca135978a3', - n: '1000000000000000 0000000000000000 14def9dea2f79cd6 5812631a5cf5d3ed', - hash: hash.sha256, - gRed: false, - g: [ - '216936d3cd6e53fec0a4e231fdd6dc5c692cc7609525a7b2c9562d608f25d51a', + BN.isBN = function isBN (num) { + if (num instanceof BN) { + return true; + } - // 4/5 - '6666666666666666666666666666666666666666666666666666666666666658' - ] -}); + return num !== null && typeof num === 'object' && + num.constructor.wordSize === BN.wordSize && Array.isArray(num.words); + }; -var pre; -try { - pre = require('./precomputed/secp256k1'); -} catch (e) { - pre = undefined; -} + BN.max = function max (left, right) { + if (left.cmp(right) > 0) return left; + return right; + }; -defineCurve('secp256k1', { - type: 'short', - prime: 'k256', - p: 'ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff fffffffe fffffc2f', - a: '0', - b: '7', - n: 'ffffffff ffffffff ffffffff fffffffe baaedce6 af48a03b bfd25e8c d0364141', - h: '1', - hash: hash.sha256, + BN.min = function min (left, right) { + if (left.cmp(right) < 0) return left; + return right; + }; - // Precomputed endomorphism - beta: '7ae96a2b657c07106e64479eac3434e99cf0497512f58995c1396c28719501ee', - lambda: '5363ad4cc05c30e0a5261c028812645a122e22ea20816678df02967c1b23bd72', - basis: [ - { - a: '3086d221a7d46bcde86c90e49284eb15', - b: '-e4437ed6010e88286f547fa90abfe4c3' - }, - { - a: '114ca50f7a8e2f3f657c1108d9d44cfd8', - b: '3086d221a7d46bcde86c90e49284eb15' + BN.prototype._init = function init (number, base, endian) { + if (typeof number === 'number') { + return this._initNumber(number, base, endian); } - ], - - gRed: false, - g: [ - '79be667ef9dcbbac55a06295ce870b07029bfcdb2dce28d959f2815b16f81798', - '483ada7726a3c4655da4fbfc0e1108a8fd17b448a68554199c47d08ffb10d4b8', - pre - ] -}); -},{"../elliptic":71,"./precomputed/secp256k1":84,"hash.js":90}],78:[function(require,module,exports){ -'use strict'; + if (typeof number === 'object') { + return this._initArray(number, base, endian); + } -var BN = require('bn.js'); -var HmacDRBG = require('hmac-drbg'); -var elliptic = require('../../elliptic'); -var utils = elliptic.utils; -var assert = utils.assert; + if (base === 'hex') { + base = 16; + } + assert(base === (base | 0) && base >= 2 && base <= 36); -var KeyPair = require('./key'); -var Signature = require('./signature'); + number = number.toString().replace(/\s+/g, ''); + var start = 0; + if (number[0] === '-') { + start++; + } -function EC(options) { - if (!(this instanceof EC)) - return new EC(options); + if (base === 16) { + this._parseHex(number, start); + } else { + this._parseBase(number, base, start); + } - // Shortcut `elliptic.ec(curve-name)` - if (typeof options === 'string') { - assert(elliptic.curves.hasOwnProperty(options), 'Unknown curve ' + options); + if (number[0] === '-') { + this.negative = 1; + } - options = elliptic.curves[options]; - } + this.strip(); - // Shortcut for `elliptic.ec(elliptic.curves.curveName)` - if (options instanceof elliptic.curves.PresetCurve) - options = { curve: options }; + if (endian !== 'le') return; - this.curve = options.curve.curve; - this.n = this.curve.n; - this.nh = this.n.ushrn(1); - this.g = this.curve.g; + this._initArray(this.toArray(), base, endian); + }; - // Point on curve - this.g = options.curve.g; - this.g.precompute(options.curve.n.bitLength() + 1); + BN.prototype._initNumber = function _initNumber (number, base, endian) { + if (number < 0) { + this.negative = 1; + number = -number; + } + if (number < 0x4000000) { + this.words = [ number & 0x3ffffff ]; + this.length = 1; + } else if (number < 0x10000000000000) { + this.words = [ + number & 0x3ffffff, + (number / 0x4000000) & 0x3ffffff + ]; + this.length = 2; + } else { + assert(number < 0x20000000000000); // 2 ^ 53 (unsafe) + this.words = [ + number & 0x3ffffff, + (number / 0x4000000) & 0x3ffffff, + 1 + ]; + this.length = 3; + } - // Hash for function for DRBG - this.hash = options.hash || options.curve.hash; -} -module.exports = EC; + if (endian !== 'le') return; -EC.prototype.keyPair = function keyPair(options) { - return new KeyPair(this, options); -}; + // Reverse the bytes + this._initArray(this.toArray(), base, endian); + }; -EC.prototype.keyFromPrivate = function keyFromPrivate(priv, enc) { - return KeyPair.fromPrivate(this, priv, enc); -}; + BN.prototype._initArray = function _initArray (number, base, endian) { + // Perhaps a Uint8Array + assert(typeof number.length === 'number'); + if (number.length <= 0) { + this.words = [ 0 ]; + this.length = 1; + return this; + } -EC.prototype.keyFromPublic = function keyFromPublic(pub, enc) { - return KeyPair.fromPublic(this, pub, enc); -}; + this.length = Math.ceil(number.length / 3); + this.words = new Array(this.length); + for (var i = 0; i < this.length; i++) { + this.words[i] = 0; + } -EC.prototype.genKeyPair = function genKeyPair(options) { - if (!options) - options = {}; + var j, w; + var off = 0; + if (endian === 'be') { + for (i = number.length - 1, j = 0; i >= 0; i -= 3) { + w = number[i] | (number[i - 1] << 8) | (number[i - 2] << 16); + this.words[j] |= (w << off) & 0x3ffffff; + this.words[j + 1] = (w >>> (26 - off)) & 0x3ffffff; + off += 24; + if (off >= 26) { + off -= 26; + j++; + } + } + } else if (endian === 'le') { + for (i = 0, j = 0; i < number.length; i += 3) { + w = number[i] | (number[i + 1] << 8) | (number[i + 2] << 16); + this.words[j] |= (w << off) & 0x3ffffff; + this.words[j + 1] = (w >>> (26 - off)) & 0x3ffffff; + off += 24; + if (off >= 26) { + off -= 26; + j++; + } + } + } + return this.strip(); + }; - // Instantiate Hmac_DRBG - var drbg = new HmacDRBG({ - hash: this.hash, - pers: options.pers, - persEnc: options.persEnc || 'utf8', - entropy: options.entropy || elliptic.rand(this.hash.hmacStrength), - entropyEnc: options.entropy && options.entropyEnc || 'utf8', - nonce: this.n.toArray() - }); + function parseHex (str, start, end) { + var r = 0; + var len = Math.min(str.length, end); + for (var i = start; i < len; i++) { + var c = str.charCodeAt(i) - 48; - var bytes = this.n.byteLength(); - var ns2 = this.n.sub(new BN(2)); - do { - var priv = new BN(drbg.generate(bytes)); - if (priv.cmp(ns2) > 0) - continue; + r <<= 4; - priv.iaddn(1); - return this.keyFromPrivate(priv); - } while (true); -}; + // 'a' - 'f' + if (c >= 49 && c <= 54) { + r |= c - 49 + 0xa; -EC.prototype._truncateToN = function truncateToN(msg, truncOnly) { - var delta = msg.byteLength() * 8 - this.n.bitLength(); - if (delta > 0) - msg = msg.ushrn(delta); - if (!truncOnly && msg.cmp(this.n) >= 0) - return msg.sub(this.n); - else - return msg; -}; + // 'A' - 'F' + } else if (c >= 17 && c <= 22) { + r |= c - 17 + 0xa; -EC.prototype.sign = function sign(msg, key, enc, options) { - if (typeof enc === 'object') { - options = enc; - enc = null; + // '0' - '9' + } else { + r |= c & 0xf; + } + } + return r; } - if (!options) - options = {}; - - key = this.keyFromPrivate(key, enc); - msg = this._truncateToN(new BN(msg, 16)); - - // Zero-extend key to provide enough entropy - var bytes = this.n.byteLength(); - var bkey = key.getPrivate().toArray('be', bytes); - // Zero-extend nonce to have the same byte size as N - var nonce = msg.toArray('be', bytes); + BN.prototype._parseHex = function _parseHex (number, start) { + // Create possibly bigger array to ensure that it fits the number + this.length = Math.ceil((number.length - start) / 6); + this.words = new Array(this.length); + for (var i = 0; i < this.length; i++) { + this.words[i] = 0; + } - // Instantiate Hmac_DRBG - var drbg = new HmacDRBG({ - hash: this.hash, - entropy: bkey, - nonce: nonce, - pers: options.pers, - persEnc: options.persEnc || 'utf8' - }); + var j, w; + // Scan 24-bit chunks and add them to the number + var off = 0; + for (i = number.length - 6, j = 0; i >= start; i -= 6) { + w = parseHex(number, i, i + 6); + this.words[j] |= (w << off) & 0x3ffffff; + // NOTE: `0x3fffff` is intentional here, 26bits max shift + 24bit hex limb + this.words[j + 1] |= w >>> (26 - off) & 0x3fffff; + off += 24; + if (off >= 26) { + off -= 26; + j++; + } + } + if (i + 6 !== start) { + w = parseHex(number, start, i + 6); + this.words[j] |= (w << off) & 0x3ffffff; + this.words[j + 1] |= w >>> (26 - off) & 0x3fffff; + } + this.strip(); + }; - // Number of bytes to generate - var ns1 = this.n.sub(new BN(1)); + function parseBase (str, start, end, mul) { + var r = 0; + var len = Math.min(str.length, end); + for (var i = start; i < len; i++) { + var c = str.charCodeAt(i) - 48; - for (var iter = 0; true; iter++) { - var k = options.k ? - options.k(iter) : - new BN(drbg.generate(this.n.byteLength())); - k = this._truncateToN(k, true); - if (k.cmpn(1) <= 0 || k.cmp(ns1) >= 0) - continue; + r *= mul; - var kp = this.g.mul(k); - if (kp.isInfinity()) - continue; + // 'a' + if (c >= 49) { + r += c - 49 + 0xa; - var kpX = kp.getX(); - var r = kpX.umod(this.n); - if (r.cmpn(0) === 0) - continue; + // 'A' + } else if (c >= 17) { + r += c - 17 + 0xa; - var s = k.invm(this.n).mul(r.mul(key.getPrivate()).iadd(msg)); - s = s.umod(this.n); - if (s.cmpn(0) === 0) - continue; + // '0' - '9' + } else { + r += c; + } + } + return r; + } - var recoveryParam = (kp.getY().isOdd() ? 1 : 0) | - (kpX.cmp(r) !== 0 ? 2 : 0); + BN.prototype._parseBase = function _parseBase (number, base, start) { + // Initialize as zero + this.words = [ 0 ]; + this.length = 1; - // Use complement of `s`, if it is > `n / 2` - if (options.canonical && s.cmp(this.nh) > 0) { - s = this.n.sub(s); - recoveryParam ^= 1; + // Find length of limb in base + for (var limbLen = 0, limbPow = 1; limbPow <= 0x3ffffff; limbPow *= base) { + limbLen++; } + limbLen--; + limbPow = (limbPow / base) | 0; - return new Signature({ r: r, s: s, recoveryParam: recoveryParam }); - } -}; + var total = number.length - start; + var mod = total % limbLen; + var end = Math.min(total, total - mod) + start; -EC.prototype.verify = function verify(msg, signature, key, enc) { - msg = this._truncateToN(new BN(msg, 16)); - key = this.keyFromPublic(key, enc); - signature = new Signature(signature, 'hex'); + var word = 0; + for (var i = start; i < end; i += limbLen) { + word = parseBase(number, i, i + limbLen, base); - // Perform primitive values validation - var r = signature.r; - var s = signature.s; - if (r.cmpn(1) < 0 || r.cmp(this.n) >= 0) - return false; - if (s.cmpn(1) < 0 || s.cmp(this.n) >= 0) - return false; + this.imuln(limbPow); + if (this.words[0] + word < 0x4000000) { + this.words[0] += word; + } else { + this._iaddn(word); + } + } - // Validate signature - var sinv = s.invm(this.n); - var u1 = sinv.mul(msg).umod(this.n); - var u2 = sinv.mul(r).umod(this.n); + if (mod !== 0) { + var pow = 1; + word = parseBase(number, i, number.length, base); - if (!this.curve._maxwellTrick) { - var p = this.g.mulAdd(u1, key.getPublic(), u2); - if (p.isInfinity()) - return false; + for (i = 0; i < mod; i++) { + pow *= base; + } - return p.getX().umod(this.n).cmp(r) === 0; - } - - // NOTE: Greg Maxwell's trick, inspired by: - // https://git.io/vad3K - - var p = this.g.jmulAdd(u1, key.getPublic(), u2); - if (p.isInfinity()) - return false; + this.imuln(pow); + if (this.words[0] + word < 0x4000000) { + this.words[0] += word; + } else { + this._iaddn(word); + } + } + }; - // Compare `p.x` of Jacobian point with `r`, - // this will do `p.x == r * p.z^2` instead of multiplying `p.x` by the - // inverse of `p.z^2` - return p.eqXToP(r); -}; + BN.prototype.copy = function copy (dest) { + dest.words = new Array(this.length); + for (var i = 0; i < this.length; i++) { + dest.words[i] = this.words[i]; + } + dest.length = this.length; + dest.negative = this.negative; + dest.red = this.red; + }; -EC.prototype.recoverPubKey = function(msg, signature, j, enc) { - assert((3 & j) === j, 'The recovery param is more than two bits'); - signature = new Signature(signature, enc); + BN.prototype.clone = function clone () { + var r = new BN(null); + this.copy(r); + return r; + }; - var n = this.n; - var e = new BN(msg); - var r = signature.r; - var s = signature.s; + BN.prototype._expand = function _expand (size) { + while (this.length < size) { + this.words[this.length++] = 0; + } + return this; + }; - // A set LSB signifies that the y-coordinate is odd - var isYOdd = j & 1; - var isSecondKey = j >> 1; - if (r.cmp(this.curve.p.umod(this.curve.n)) >= 0 && isSecondKey) - throw new Error('Unable to find sencond key candinate'); + // Remove leading `0` from `this` + BN.prototype.strip = function strip () { + while (this.length > 1 && this.words[this.length - 1] === 0) { + this.length--; + } + return this._normSign(); + }; - // 1.1. Let x = r + jn. - if (isSecondKey) - r = this.curve.pointFromX(r.add(this.curve.n), isYOdd); - else - r = this.curve.pointFromX(r, isYOdd); + BN.prototype._normSign = function _normSign () { + // -0 = 0 + if (this.length === 1 && this.words[0] === 0) { + this.negative = 0; + } + return this; + }; - var rInv = signature.r.invm(n); - var s1 = n.sub(e).mul(rInv).umod(n); - var s2 = s.mul(rInv).umod(n); + BN.prototype.inspect = function inspect () { + return (this.red ? ''; + }; - // 1.6.1 Compute Q = r^-1 (sR - eG) - // Q = r^-1 (sR + -eG) - return this.g.mulAdd(s1, r, s2); -}; + /* -EC.prototype.getKeyRecoveryParam = function(e, signature, Q, enc) { - signature = new Signature(signature, enc); - if (signature.recoveryParam !== null) - return signature.recoveryParam; + var zeros = []; + var groupSizes = []; + var groupBases = []; - for (var i = 0; i < 4; i++) { - var Qprime; - try { - Qprime = this.recoverPubKey(e, signature, i); - } catch (e) { - continue; + var s = ''; + var i = -1; + while (++i < BN.wordSize) { + zeros[i] = s; + s += '0'; + } + groupSizes[0] = 0; + groupSizes[1] = 0; + groupBases[0] = 0; + groupBases[1] = 0; + var base = 2 - 1; + while (++base < 36 + 1) { + var groupSize = 0; + var groupBase = 1; + while (groupBase < (1 << BN.wordSize) / base) { + groupBase *= base; + groupSize += 1; } - - if (Qprime.eq(Q)) - return i; + groupSizes[base] = groupSize; + groupBases[base] = groupBase; } - throw new Error('Unable to find valid recovery factor'); -}; -},{"../../elliptic":71,"./key":79,"./signature":80,"bn.js":20,"hmac-drbg":102}],79:[function(require,module,exports){ -'use strict'; + */ -var BN = require('bn.js'); -var elliptic = require('../../elliptic'); -var utils = elliptic.utils; -var assert = utils.assert; + var zeros = [ + '', + '0', + '00', + '000', + '0000', + '00000', + '000000', + '0000000', + '00000000', + '000000000', + '0000000000', + '00000000000', + '000000000000', + '0000000000000', + '00000000000000', + '000000000000000', + '0000000000000000', + '00000000000000000', + '000000000000000000', + '0000000000000000000', + '00000000000000000000', + '000000000000000000000', + '0000000000000000000000', + '00000000000000000000000', + '000000000000000000000000', + '0000000000000000000000000' + ]; -function KeyPair(ec, options) { - this.ec = ec; - this.priv = null; - this.pub = null; + var groupSizes = [ + 0, 0, + 25, 16, 12, 11, 10, 9, 8, + 8, 7, 7, 7, 7, 6, 6, + 6, 6, 6, 6, 6, 5, 5, + 5, 5, 5, 5, 5, 5, 5, + 5, 5, 5, 5, 5, 5, 5 + ]; - // KeyPair(ec, { priv: ..., pub: ... }) - if (options.priv) - this._importPrivate(options.priv, options.privEnc); - if (options.pub) - this._importPublic(options.pub, options.pubEnc); -} -module.exports = KeyPair; + var groupBases = [ + 0, 0, + 33554432, 43046721, 16777216, 48828125, 60466176, 40353607, 16777216, + 43046721, 10000000, 19487171, 35831808, 62748517, 7529536, 11390625, + 16777216, 24137569, 34012224, 47045881, 64000000, 4084101, 5153632, + 6436343, 7962624, 9765625, 11881376, 14348907, 17210368, 20511149, + 24300000, 28629151, 33554432, 39135393, 45435424, 52521875, 60466176 + ]; -KeyPair.fromPublic = function fromPublic(ec, pub, enc) { - if (pub instanceof KeyPair) - return pub; + BN.prototype.toString = function toString (base, padding) { + base = base || 10; + padding = padding | 0 || 1; - return new KeyPair(ec, { - pub: pub, - pubEnc: enc - }); -}; + var out; + if (base === 16 || base === 'hex') { + out = ''; + var off = 0; + var carry = 0; + for (var i = 0; i < this.length; i++) { + var w = this.words[i]; + var word = (((w << off) | carry) & 0xffffff).toString(16); + carry = (w >>> (24 - off)) & 0xffffff; + if (carry !== 0 || i !== this.length - 1) { + out = zeros[6 - word.length] + word + out; + } else { + out = word + out; + } + off += 2; + if (off >= 26) { + off -= 26; + i--; + } + } + if (carry !== 0) { + out = carry.toString(16) + out; + } + while (out.length % padding !== 0) { + out = '0' + out; + } + if (this.negative !== 0) { + out = '-' + out; + } + return out; + } -KeyPair.fromPrivate = function fromPrivate(ec, priv, enc) { - if (priv instanceof KeyPair) - return priv; + if (base === (base | 0) && base >= 2 && base <= 36) { + // var groupSize = Math.floor(BN.wordSize * Math.LN2 / Math.log(base)); + var groupSize = groupSizes[base]; + // var groupBase = Math.pow(base, groupSize); + var groupBase = groupBases[base]; + out = ''; + var c = this.clone(); + c.negative = 0; + while (!c.isZero()) { + var r = c.modn(groupBase).toString(base); + c = c.idivn(groupBase); - return new KeyPair(ec, { - priv: priv, - privEnc: enc - }); -}; + if (!c.isZero()) { + out = zeros[groupSize - r.length] + r + out; + } else { + out = r + out; + } + } + if (this.isZero()) { + out = '0' + out; + } + while (out.length % padding !== 0) { + out = '0' + out; + } + if (this.negative !== 0) { + out = '-' + out; + } + return out; + } -KeyPair.prototype.validate = function validate() { - var pub = this.getPublic(); + assert(false, 'Base should be between 2 and 36'); + }; - if (pub.isInfinity()) - return { result: false, reason: 'Invalid public key' }; - if (!pub.validate()) - return { result: false, reason: 'Public key is not a point' }; - if (!pub.mul(this.ec.curve.n).isInfinity()) - return { result: false, reason: 'Public key * N != O' }; + BN.prototype.toNumber = function toNumber () { + var ret = this.words[0]; + if (this.length === 2) { + ret += this.words[1] * 0x4000000; + } else if (this.length === 3 && this.words[2] === 0x01) { + // NOTE: at this stage it is known that the top bit is set + ret += 0x10000000000000 + (this.words[1] * 0x4000000); + } else if (this.length > 2) { + assert(false, 'Number can only safely store up to 53 bits'); + } + return (this.negative !== 0) ? -ret : ret; + }; - return { result: true, reason: null }; -}; + BN.prototype.toJSON = function toJSON () { + return this.toString(16); + }; -KeyPair.prototype.getPublic = function getPublic(compact, enc) { - // compact is optional argument - if (typeof compact === 'string') { - enc = compact; - compact = null; - } + BN.prototype.toBuffer = function toBuffer (endian, length) { + assert(typeof Buffer !== 'undefined'); + return this.toArrayLike(Buffer, endian, length); + }; - if (!this.pub) - this.pub = this.ec.g.mul(this.priv); + BN.prototype.toArray = function toArray (endian, length) { + return this.toArrayLike(Array, endian, length); + }; - if (!enc) - return this.pub; + BN.prototype.toArrayLike = function toArrayLike (ArrayType, endian, length) { + var byteLength = this.byteLength(); + var reqLength = length || Math.max(1, byteLength); + assert(byteLength <= reqLength, 'byte array longer than desired length'); + assert(reqLength > 0, 'Requested array length <= 0'); - return this.pub.encode(enc, compact); -}; + this.strip(); + var littleEndian = endian === 'le'; + var res = new ArrayType(reqLength); -KeyPair.prototype.getPrivate = function getPrivate(enc) { - if (enc === 'hex') - return this.priv.toString(16, 2); - else - return this.priv; -}; + var b, i; + var q = this.clone(); + if (!littleEndian) { + // Assume big-endian + for (i = 0; i < reqLength - byteLength; i++) { + res[i] = 0; + } -KeyPair.prototype._importPrivate = function _importPrivate(key, enc) { - this.priv = new BN(key, enc || 16); + for (i = 0; !q.isZero(); i++) { + b = q.andln(0xff); + q.iushrn(8); - // Ensure that the priv won't be bigger than n, otherwise we may fail - // in fixed multiplication method - this.priv = this.priv.umod(this.ec.curve.n); -}; + res[reqLength - i - 1] = b; + } + } else { + for (i = 0; !q.isZero(); i++) { + b = q.andln(0xff); + q.iushrn(8); -KeyPair.prototype._importPublic = function _importPublic(key, enc) { - if (key.x || key.y) { - // Montgomery points only have an `x` coordinate. - // Weierstrass/Edwards points on the other hand have both `x` and - // `y` coordinates. - if (this.ec.curve.type === 'mont') { - assert(key.x, 'Need x coordinate'); - } else if (this.ec.curve.type === 'short' || - this.ec.curve.type === 'edwards') { - assert(key.x && key.y, 'Need both x and y coordinate'); + res[i] = b; + } + + for (; i < reqLength; i++) { + res[i] = 0; + } } - this.pub = this.ec.curve.point(key.x, key.y); - return; + + return res; + }; + + if (Math.clz32) { + BN.prototype._countBits = function _countBits (w) { + return 32 - Math.clz32(w); + }; + } else { + BN.prototype._countBits = function _countBits (w) { + var t = w; + var r = 0; + if (t >= 0x1000) { + r += 13; + t >>>= 13; + } + if (t >= 0x40) { + r += 7; + t >>>= 7; + } + if (t >= 0x8) { + r += 4; + t >>>= 4; + } + if (t >= 0x02) { + r += 2; + t >>>= 2; + } + return r + t; + }; } - this.pub = this.ec.curve.decodePoint(key, enc); -}; -// ECDH -KeyPair.prototype.derive = function derive(pub) { - return pub.mul(this.priv).getX(); -}; + BN.prototype._zeroBits = function _zeroBits (w) { + // Short-cut + if (w === 0) return 26; -// ECDSA -KeyPair.prototype.sign = function sign(msg, enc, options) { - return this.ec.sign(msg, this, enc, options); -}; + var t = w; + var r = 0; + if ((t & 0x1fff) === 0) { + r += 13; + t >>>= 13; + } + if ((t & 0x7f) === 0) { + r += 7; + t >>>= 7; + } + if ((t & 0xf) === 0) { + r += 4; + t >>>= 4; + } + if ((t & 0x3) === 0) { + r += 2; + t >>>= 2; + } + if ((t & 0x1) === 0) { + r++; + } + return r; + }; -KeyPair.prototype.verify = function verify(msg, signature) { - return this.ec.verify(msg, signature, this); -}; + // Return number of used bits in a BN + BN.prototype.bitLength = function bitLength () { + var w = this.words[this.length - 1]; + var hi = this._countBits(w); + return (this.length - 1) * 26 + hi; + }; -KeyPair.prototype.inspect = function inspect() { - return ''; -}; + function toBitArray (num) { + var w = new Array(num.bitLength()); -},{"../../elliptic":71,"bn.js":20}],80:[function(require,module,exports){ -'use strict'; + for (var bit = 0; bit < w.length; bit++) { + var off = (bit / 26) | 0; + var wbit = bit % 26; -var BN = require('bn.js'); + w[bit] = (num.words[off] & (1 << wbit)) >>> wbit; + } -var elliptic = require('../../elliptic'); -var utils = elliptic.utils; -var assert = utils.assert; + return w; + } -function Signature(options, enc) { - if (options instanceof Signature) - return options; + // Number of trailing zero bits + BN.prototype.zeroBits = function zeroBits () { + if (this.isZero()) return 0; - if (this._importDER(options, enc)) - return; + var r = 0; + for (var i = 0; i < this.length; i++) { + var b = this._zeroBits(this.words[i]); + r += b; + if (b !== 26) break; + } + return r; + }; - assert(options.r && options.s, 'Signature without r or s'); - this.r = new BN(options.r, 16); - this.s = new BN(options.s, 16); - if (options.recoveryParam === undefined) - this.recoveryParam = null; - else - this.recoveryParam = options.recoveryParam; -} -module.exports = Signature; + BN.prototype.byteLength = function byteLength () { + return Math.ceil(this.bitLength() / 8); + }; -function Position() { - this.place = 0; -} + BN.prototype.toTwos = function toTwos (width) { + if (this.negative !== 0) { + return this.abs().inotn(width).iaddn(1); + } + return this.clone(); + }; -function getLength(buf, p) { - var initial = buf[p.place++]; - if (!(initial & 0x80)) { - return initial; - } - var octetLen = initial & 0xf; - var val = 0; - for (var i = 0, off = p.place; i < octetLen; i++, off++) { - val <<= 8; - val |= buf[off]; - } - p.place = off; - return val; -} + BN.prototype.fromTwos = function fromTwos (width) { + if (this.testn(width - 1)) { + return this.notn(width).iaddn(1).ineg(); + } + return this.clone(); + }; -function rmPadding(buf) { - var i = 0; - var len = buf.length - 1; - while (!buf[i] && !(buf[i + 1] & 0x80) && i < len) { - i++; - } - if (i === 0) { - return buf; - } - return buf.slice(i); -} - -Signature.prototype._importDER = function _importDER(data, enc) { - data = utils.toArray(data, enc); - var p = new Position(); - if (data[p.place++] !== 0x30) { - return false; - } - var len = getLength(data, p); - if ((len + p.place) !== data.length) { - return false; - } - if (data[p.place++] !== 0x02) { - return false; - } - var rlen = getLength(data, p); - var r = data.slice(p.place, rlen + p.place); - p.place += rlen; - if (data[p.place++] !== 0x02) { - return false; - } - var slen = getLength(data, p); - if (data.length !== slen + p.place) { - return false; - } - var s = data.slice(p.place, slen + p.place); - if (r[0] === 0 && (r[1] & 0x80)) { - r = r.slice(1); - } - if (s[0] === 0 && (s[1] & 0x80)) { - s = s.slice(1); - } - - this.r = new BN(r); - this.s = new BN(s); - this.recoveryParam = null; + BN.prototype.isNeg = function isNeg () { + return this.negative !== 0; + }; - return true; -}; + // Return negative clone of `this` + BN.prototype.neg = function neg () { + return this.clone().ineg(); + }; -function constructLength(arr, len) { - if (len < 0x80) { - arr.push(len); - return; - } - var octets = 1 + (Math.log(len) / Math.LN2 >>> 3); - arr.push(octets | 0x80); - while (--octets) { - arr.push((len >>> (octets << 3)) & 0xff); - } - arr.push(len); -} + BN.prototype.ineg = function ineg () { + if (!this.isZero()) { + this.negative ^= 1; + } -Signature.prototype.toDER = function toDER(enc) { - var r = this.r.toArray(); - var s = this.s.toArray(); + return this; + }; - // Pad values - if (r[0] & 0x80) - r = [ 0 ].concat(r); - // Pad values - if (s[0] & 0x80) - s = [ 0 ].concat(s); + // Or `num` with `this` in-place + BN.prototype.iuor = function iuor (num) { + while (this.length < num.length) { + this.words[this.length++] = 0; + } - r = rmPadding(r); - s = rmPadding(s); + for (var i = 0; i < num.length; i++) { + this.words[i] = this.words[i] | num.words[i]; + } - while (!s[0] && !(s[1] & 0x80)) { - s = s.slice(1); - } - var arr = [ 0x02 ]; - constructLength(arr, r.length); - arr = arr.concat(r); - arr.push(0x02); - constructLength(arr, s.length); - var backHalf = arr.concat(s); - var res = [ 0x30 ]; - constructLength(res, backHalf.length); - res = res.concat(backHalf); - return utils.encode(res, enc); -}; + return this.strip(); + }; -},{"../../elliptic":71,"bn.js":20}],81:[function(require,module,exports){ -'use strict'; + BN.prototype.ior = function ior (num) { + assert((this.negative | num.negative) === 0); + return this.iuor(num); + }; -var hash = require('hash.js'); -var elliptic = require('../../elliptic'); -var utils = elliptic.utils; -var assert = utils.assert; -var parseBytes = utils.parseBytes; -var KeyPair = require('./key'); -var Signature = require('./signature'); + // Or `num` with `this` + BN.prototype.or = function or (num) { + if (this.length > num.length) return this.clone().ior(num); + return num.clone().ior(this); + }; -function EDDSA(curve) { - assert(curve === 'ed25519', 'only tested with ed25519 so far'); + BN.prototype.uor = function uor (num) { + if (this.length > num.length) return this.clone().iuor(num); + return num.clone().iuor(this); + }; - if (!(this instanceof EDDSA)) - return new EDDSA(curve); + // And `num` with `this` in-place + BN.prototype.iuand = function iuand (num) { + // b = min-length(num, this) + var b; + if (this.length > num.length) { + b = num; + } else { + b = this; + } - var curve = elliptic.curves[curve].curve; - this.curve = curve; - this.g = curve.g; - this.g.precompute(curve.n.bitLength() + 1); + for (var i = 0; i < b.length; i++) { + this.words[i] = this.words[i] & num.words[i]; + } - this.pointClass = curve.point().constructor; - this.encodingLength = Math.ceil(curve.n.bitLength() / 8); - this.hash = hash.sha512; -} + this.length = b.length; -module.exports = EDDSA; + return this.strip(); + }; -/** -* @param {Array|String} message - message bytes -* @param {Array|String|KeyPair} secret - secret bytes or a keypair -* @returns {Signature} - signature -*/ -EDDSA.prototype.sign = function sign(message, secret) { - message = parseBytes(message); - var key = this.keyFromSecret(secret); - var r = this.hashInt(key.messagePrefix(), message); - var R = this.g.mul(r); - var Rencoded = this.encodePoint(R); - var s_ = this.hashInt(Rencoded, key.pubBytes(), message) - .mul(key.priv()); - var S = r.add(s_).umod(this.curve.n); - return this.makeSignature({ R: R, S: S, Rencoded: Rencoded }); -}; + BN.prototype.iand = function iand (num) { + assert((this.negative | num.negative) === 0); + return this.iuand(num); + }; -/** -* @param {Array} message - message bytes -* @param {Array|String|Signature} sig - sig bytes -* @param {Array|String|Point|KeyPair} pub - public key -* @returns {Boolean} - true if public key matches sig of message -*/ -EDDSA.prototype.verify = function verify(message, sig, pub) { - message = parseBytes(message); - sig = this.makeSignature(sig); - var key = this.keyFromPublic(pub); - var h = this.hashInt(sig.Rencoded(), key.pubBytes(), message); - var SG = this.g.mul(sig.S()); - var RplusAh = sig.R().add(key.pub().mul(h)); - return RplusAh.eq(SG); -}; + // And `num` with `this` + BN.prototype.and = function and (num) { + if (this.length > num.length) return this.clone().iand(num); + return num.clone().iand(this); + }; -EDDSA.prototype.hashInt = function hashInt() { - var hash = this.hash(); - for (var i = 0; i < arguments.length; i++) - hash.update(arguments[i]); - return utils.intFromLE(hash.digest()).umod(this.curve.n); -}; + BN.prototype.uand = function uand (num) { + if (this.length > num.length) return this.clone().iuand(num); + return num.clone().iuand(this); + }; -EDDSA.prototype.keyFromPublic = function keyFromPublic(pub) { - return KeyPair.fromPublic(this, pub); -}; + // Xor `num` with `this` in-place + BN.prototype.iuxor = function iuxor (num) { + // a.length > b.length + var a; + var b; + if (this.length > num.length) { + a = this; + b = num; + } else { + a = num; + b = this; + } -EDDSA.prototype.keyFromSecret = function keyFromSecret(secret) { - return KeyPair.fromSecret(this, secret); -}; + for (var i = 0; i < b.length; i++) { + this.words[i] = a.words[i] ^ b.words[i]; + } -EDDSA.prototype.makeSignature = function makeSignature(sig) { - if (sig instanceof Signature) - return sig; - return new Signature(this, sig); -}; + if (this !== a) { + for (; i < a.length; i++) { + this.words[i] = a.words[i]; + } + } -/** -* * https://tools.ietf.org/html/draft-josefsson-eddsa-ed25519-03#section-5.2 -* -* EDDSA defines methods for encoding and decoding points and integers. These are -* helper convenience methods, that pass along to utility functions implied -* parameters. -* -*/ -EDDSA.prototype.encodePoint = function encodePoint(point) { - var enc = point.getY().toArray('le', this.encodingLength); - enc[this.encodingLength - 1] |= point.getX().isOdd() ? 0x80 : 0; - return enc; -}; + this.length = a.length; -EDDSA.prototype.decodePoint = function decodePoint(bytes) { - bytes = utils.parseBytes(bytes); + return this.strip(); + }; - var lastIx = bytes.length - 1; - var normed = bytes.slice(0, lastIx).concat(bytes[lastIx] & ~0x80); - var xIsOdd = (bytes[lastIx] & 0x80) !== 0; + BN.prototype.ixor = function ixor (num) { + assert((this.negative | num.negative) === 0); + return this.iuxor(num); + }; - var y = utils.intFromLE(normed); - return this.curve.pointFromY(y, xIsOdd); -}; + // Xor `num` with `this` + BN.prototype.xor = function xor (num) { + if (this.length > num.length) return this.clone().ixor(num); + return num.clone().ixor(this); + }; -EDDSA.prototype.encodeInt = function encodeInt(num) { - return num.toArray('le', this.encodingLength); -}; + BN.prototype.uxor = function uxor (num) { + if (this.length > num.length) return this.clone().iuxor(num); + return num.clone().iuxor(this); + }; -EDDSA.prototype.decodeInt = function decodeInt(bytes) { - return utils.intFromLE(bytes); -}; + // Not ``this`` with ``width`` bitwidth + BN.prototype.inotn = function inotn (width) { + assert(typeof width === 'number' && width >= 0); -EDDSA.prototype.isPoint = function isPoint(val) { - return val instanceof this.pointClass; -}; + var bytesNeeded = Math.ceil(width / 26) | 0; + var bitsLeft = width % 26; -},{"../../elliptic":71,"./key":82,"./signature":83,"hash.js":90}],82:[function(require,module,exports){ -'use strict'; + // Extend the buffer with leading zeroes + this._expand(bytesNeeded); -var elliptic = require('../../elliptic'); -var utils = elliptic.utils; -var assert = utils.assert; -var parseBytes = utils.parseBytes; -var cachedProperty = utils.cachedProperty; + if (bitsLeft > 0) { + bytesNeeded--; + } -/** -* @param {EDDSA} eddsa - instance -* @param {Object} params - public/private key parameters -* -* @param {Array} [params.secret] - secret seed bytes -* @param {Point} [params.pub] - public key point (aka `A` in eddsa terms) -* @param {Array} [params.pub] - public key point encoded as bytes -* -*/ -function KeyPair(eddsa, params) { - this.eddsa = eddsa; - this._secret = parseBytes(params.secret); - if (eddsa.isPoint(params.pub)) - this._pub = params.pub; - else - this._pubBytes = parseBytes(params.pub); -} + // Handle complete words + for (var i = 0; i < bytesNeeded; i++) { + this.words[i] = ~this.words[i] & 0x3ffffff; + } -KeyPair.fromPublic = function fromPublic(eddsa, pub) { - if (pub instanceof KeyPair) - return pub; - return new KeyPair(eddsa, { pub: pub }); -}; + // Handle the residue + if (bitsLeft > 0) { + this.words[i] = ~this.words[i] & (0x3ffffff >> (26 - bitsLeft)); + } -KeyPair.fromSecret = function fromSecret(eddsa, secret) { - if (secret instanceof KeyPair) - return secret; - return new KeyPair(eddsa, { secret: secret }); -}; + // And remove leading zeroes + return this.strip(); + }; -KeyPair.prototype.secret = function secret() { - return this._secret; -}; + BN.prototype.notn = function notn (width) { + return this.clone().inotn(width); + }; -cachedProperty(KeyPair, 'pubBytes', function pubBytes() { - return this.eddsa.encodePoint(this.pub()); -}); + // Set `bit` of `this` + BN.prototype.setn = function setn (bit, val) { + assert(typeof bit === 'number' && bit >= 0); -cachedProperty(KeyPair, 'pub', function pub() { - if (this._pubBytes) - return this.eddsa.decodePoint(this._pubBytes); - return this.eddsa.g.mul(this.priv()); -}); + var off = (bit / 26) | 0; + var wbit = bit % 26; -cachedProperty(KeyPair, 'privBytes', function privBytes() { - var eddsa = this.eddsa; - var hash = this.hash(); - var lastIx = eddsa.encodingLength - 1; + this._expand(off + 1); - var a = hash.slice(0, eddsa.encodingLength); - a[0] &= 248; - a[lastIx] &= 127; - a[lastIx] |= 64; + if (val) { + this.words[off] = this.words[off] | (1 << wbit); + } else { + this.words[off] = this.words[off] & ~(1 << wbit); + } - return a; -}); + return this.strip(); + }; -cachedProperty(KeyPair, 'priv', function priv() { - return this.eddsa.decodeInt(this.privBytes()); -}); + // Add `num` to `this` in-place + BN.prototype.iadd = function iadd (num) { + var r; -cachedProperty(KeyPair, 'hash', function hash() { - return this.eddsa.hash().update(this.secret()).digest(); -}); + // negative + positive + if (this.negative !== 0 && num.negative === 0) { + this.negative = 0; + r = this.isub(num); + this.negative ^= 1; + return this._normSign(); -cachedProperty(KeyPair, 'messagePrefix', function messagePrefix() { - return this.hash().slice(this.eddsa.encodingLength); -}); + // positive + negative + } else if (this.negative === 0 && num.negative !== 0) { + num.negative = 0; + r = this.isub(num); + num.negative = 1; + return r._normSign(); + } -KeyPair.prototype.sign = function sign(message) { - assert(this._secret, 'KeyPair can only verify'); - return this.eddsa.sign(message, this); -}; + // a.length > b.length + var a, b; + if (this.length > num.length) { + a = this; + b = num; + } else { + a = num; + b = this; + } -KeyPair.prototype.verify = function verify(message, sig) { - return this.eddsa.verify(message, sig, this); -}; + var carry = 0; + for (var i = 0; i < b.length; i++) { + r = (a.words[i] | 0) + (b.words[i] | 0) + carry; + this.words[i] = r & 0x3ffffff; + carry = r >>> 26; + } + for (; carry !== 0 && i < a.length; i++) { + r = (a.words[i] | 0) + carry; + this.words[i] = r & 0x3ffffff; + carry = r >>> 26; + } -KeyPair.prototype.getSecret = function getSecret(enc) { - assert(this._secret, 'KeyPair is public only'); - return utils.encode(this.secret(), enc); -}; + this.length = a.length; + if (carry !== 0) { + this.words[this.length] = carry; + this.length++; + // Copy the rest of the words + } else if (a !== this) { + for (; i < a.length; i++) { + this.words[i] = a.words[i]; + } + } -KeyPair.prototype.getPublic = function getPublic(enc) { - return utils.encode(this.pubBytes(), enc); -}; + return this; + }; -module.exports = KeyPair; + // Add `num` to `this` + BN.prototype.add = function add (num) { + var res; + if (num.negative !== 0 && this.negative === 0) { + num.negative = 0; + res = this.sub(num); + num.negative ^= 1; + return res; + } else if (num.negative === 0 && this.negative !== 0) { + this.negative = 0; + res = num.sub(this); + this.negative = 1; + return res; + } -},{"../../elliptic":71}],83:[function(require,module,exports){ -'use strict'; + if (this.length > num.length) return this.clone().iadd(num); -var BN = require('bn.js'); -var elliptic = require('../../elliptic'); -var utils = elliptic.utils; -var assert = utils.assert; -var cachedProperty = utils.cachedProperty; -var parseBytes = utils.parseBytes; + return num.clone().iadd(this); + }; -/** -* @param {EDDSA} eddsa - eddsa instance -* @param {Array|Object} sig - -* @param {Array|Point} [sig.R] - R point as Point or bytes -* @param {Array|bn} [sig.S] - S scalar as bn or bytes -* @param {Array} [sig.Rencoded] - R point encoded -* @param {Array} [sig.Sencoded] - S scalar encoded -*/ -function Signature(eddsa, sig) { - this.eddsa = eddsa; + // Subtract `num` from `this` in-place + BN.prototype.isub = function isub (num) { + // this - (-num) = this + num + if (num.negative !== 0) { + num.negative = 0; + var r = this.iadd(num); + num.negative = 1; + return r._normSign(); - if (typeof sig !== 'object') - sig = parseBytes(sig); + // -this - num = -(this + num) + } else if (this.negative !== 0) { + this.negative = 0; + this.iadd(num); + this.negative = 1; + return this._normSign(); + } - if (Array.isArray(sig)) { - sig = { - R: sig.slice(0, eddsa.encodingLength), - S: sig.slice(eddsa.encodingLength) - }; - } + // At this point both numbers are positive + var cmp = this.cmp(num); - assert(sig.R && sig.S, 'Signature without R or S'); + // Optimization - zeroify + if (cmp === 0) { + this.negative = 0; + this.length = 1; + this.words[0] = 0; + return this; + } - if (eddsa.isPoint(sig.R)) - this._R = sig.R; - if (sig.S instanceof BN) - this._S = sig.S; + // a > b + var a, b; + if (cmp > 0) { + a = this; + b = num; + } else { + a = num; + b = this; + } - this._Rencoded = Array.isArray(sig.R) ? sig.R : sig.Rencoded; - this._Sencoded = Array.isArray(sig.S) ? sig.S : sig.Sencoded; -} + var carry = 0; + for (var i = 0; i < b.length; i++) { + r = (a.words[i] | 0) - (b.words[i] | 0) + carry; + carry = r >> 26; + this.words[i] = r & 0x3ffffff; + } + for (; carry !== 0 && i < a.length; i++) { + r = (a.words[i] | 0) + carry; + carry = r >> 26; + this.words[i] = r & 0x3ffffff; + } -cachedProperty(Signature, 'S', function S() { - return this.eddsa.decodeInt(this.Sencoded()); -}); + // Copy rest of the words + if (carry === 0 && i < a.length && a !== this) { + for (; i < a.length; i++) { + this.words[i] = a.words[i]; + } + } -cachedProperty(Signature, 'R', function R() { - return this.eddsa.decodePoint(this.Rencoded()); -}); + this.length = Math.max(this.length, i); -cachedProperty(Signature, 'Rencoded', function Rencoded() { - return this.eddsa.encodePoint(this.R()); -}); + if (a !== this) { + this.negative = 1; + } -cachedProperty(Signature, 'Sencoded', function Sencoded() { - return this.eddsa.encodeInt(this.S()); -}); + return this.strip(); + }; -Signature.prototype.toBytes = function toBytes() { - return this.Rencoded().concat(this.Sencoded()); -}; + // Subtract `num` from `this` + BN.prototype.sub = function sub (num) { + return this.clone().isub(num); + }; -Signature.prototype.toHex = function toHex() { - return utils.encode(this.toBytes(), 'hex').toUpperCase(); -}; + function smallMulTo (self, num, out) { + out.negative = num.negative ^ self.negative; + var len = (self.length + num.length) | 0; + out.length = len; + len = (len - 1) | 0; -module.exports = Signature; + // Peel one iteration (compiler can't do it, because of code complexity) + var a = self.words[0] | 0; + var b = num.words[0] | 0; + var r = a * b; -},{"../../elliptic":71,"bn.js":20}],84:[function(require,module,exports){ -module.exports = { - doubles: { - step: 4, - points: [ - [ - 'e60fce93b59e9ec53011aabc21c23e97b2a31369b87a5ae9c44ee89e2a6dec0a', - 'f7e3507399e595929db99f34f57937101296891e44d23f0be1f32cce69616821' - ], - [ - '8282263212c609d9ea2a6e3e172de238d8c39cabd5ac1ca10646e23fd5f51508', - '11f8a8098557dfe45e8256e830b60ace62d613ac2f7b17bed31b6eaff6e26caf' - ], - [ - '175e159f728b865a72f99cc6c6fc846de0b93833fd2222ed73fce5b551e5b739', - 'd3506e0d9e3c79eba4ef97a51ff71f5eacb5955add24345c6efa6ffee9fed695' - ], - [ - '363d90d447b00c9c99ceac05b6262ee053441c7e55552ffe526bad8f83ff4640', - '4e273adfc732221953b445397f3363145b9a89008199ecb62003c7f3bee9de9' - ], - [ - '8b4b5f165df3c2be8c6244b5b745638843e4a781a15bcd1b69f79a55dffdf80c', - '4aad0a6f68d308b4b3fbd7813ab0da04f9e336546162ee56b3eff0c65fd4fd36' - ], - [ - '723cbaa6e5db996d6bf771c00bd548c7b700dbffa6c0e77bcb6115925232fcda', - '96e867b5595cc498a921137488824d6e2660a0653779494801dc069d9eb39f5f' - ], - [ - 'eebfa4d493bebf98ba5feec812c2d3b50947961237a919839a533eca0e7dd7fa', - '5d9a8ca3970ef0f269ee7edaf178089d9ae4cdc3a711f712ddfd4fdae1de8999' - ], - [ - '100f44da696e71672791d0a09b7bde459f1215a29b3c03bfefd7835b39a48db0', - 'cdd9e13192a00b772ec8f3300c090666b7ff4a18ff5195ac0fbd5cd62bc65a09' - ], - [ - 'e1031be262c7ed1b1dc9227a4a04c017a77f8d4464f3b3852c8acde6e534fd2d', - '9d7061928940405e6bb6a4176597535af292dd419e1ced79a44f18f29456a00d' - ], - [ - 'feea6cae46d55b530ac2839f143bd7ec5cf8b266a41d6af52d5e688d9094696d', - 'e57c6b6c97dce1bab06e4e12bf3ecd5c981c8957cc41442d3155debf18090088' - ], - [ - 'da67a91d91049cdcb367be4be6ffca3cfeed657d808583de33fa978bc1ec6cb1', - '9bacaa35481642bc41f463f7ec9780e5dec7adc508f740a17e9ea8e27a68be1d' - ], - [ - '53904faa0b334cdda6e000935ef22151ec08d0f7bb11069f57545ccc1a37b7c0', - '5bc087d0bc80106d88c9eccac20d3c1c13999981e14434699dcb096b022771c8' - ], - [ - '8e7bcd0bd35983a7719cca7764ca906779b53a043a9b8bcaeff959f43ad86047', - '10b7770b2a3da4b3940310420ca9514579e88e2e47fd68b3ea10047e8460372a' - ], - [ - '385eed34c1cdff21e6d0818689b81bde71a7f4f18397e6690a841e1599c43862', - '283bebc3e8ea23f56701de19e9ebf4576b304eec2086dc8cc0458fe5542e5453' - ], - [ - '6f9d9b803ecf191637c73a4413dfa180fddf84a5947fbc9c606ed86c3fac3a7', - '7c80c68e603059ba69b8e2a30e45c4d47ea4dd2f5c281002d86890603a842160' - ], - [ - '3322d401243c4e2582a2147c104d6ecbf774d163db0f5e5313b7e0e742d0e6bd', - '56e70797e9664ef5bfb019bc4ddaf9b72805f63ea2873af624f3a2e96c28b2a0' - ], - [ - '85672c7d2de0b7da2bd1770d89665868741b3f9af7643397721d74d28134ab83', - '7c481b9b5b43b2eb6374049bfa62c2e5e77f17fcc5298f44c8e3094f790313a6' - ], - [ - '948bf809b1988a46b06c9f1919413b10f9226c60f668832ffd959af60c82a0a', - '53a562856dcb6646dc6b74c5d1c3418c6d4dff08c97cd2bed4cb7f88d8c8e589' - ], - [ - '6260ce7f461801c34f067ce0f02873a8f1b0e44dfc69752accecd819f38fd8e8', - 'bc2da82b6fa5b571a7f09049776a1ef7ecd292238051c198c1a84e95b2b4ae17' - ], - [ - 'e5037de0afc1d8d43d8348414bbf4103043ec8f575bfdc432953cc8d2037fa2d', - '4571534baa94d3b5f9f98d09fb990bddbd5f5b03ec481f10e0e5dc841d755bda' - ], - [ - 'e06372b0f4a207adf5ea905e8f1771b4e7e8dbd1c6a6c5b725866a0ae4fce725', - '7a908974bce18cfe12a27bb2ad5a488cd7484a7787104870b27034f94eee31dd' - ], - [ - '213c7a715cd5d45358d0bbf9dc0ce02204b10bdde2a3f58540ad6908d0559754', - '4b6dad0b5ae462507013ad06245ba190bb4850f5f36a7eeddff2c27534b458f2' - ], - [ - '4e7c272a7af4b34e8dbb9352a5419a87e2838c70adc62cddf0cc3a3b08fbd53c', - '17749c766c9d0b18e16fd09f6def681b530b9614bff7dd33e0b3941817dcaae6' - ], - [ - 'fea74e3dbe778b1b10f238ad61686aa5c76e3db2be43057632427e2840fb27b6', - '6e0568db9b0b13297cf674deccb6af93126b596b973f7b77701d3db7f23cb96f' - ], - [ - '76e64113f677cf0e10a2570d599968d31544e179b760432952c02a4417bdde39', - 'c90ddf8dee4e95cf577066d70681f0d35e2a33d2b56d2032b4b1752d1901ac01' - ], - [ - 'c738c56b03b2abe1e8281baa743f8f9a8f7cc643df26cbee3ab150242bcbb891', - '893fb578951ad2537f718f2eacbfbbbb82314eef7880cfe917e735d9699a84c3' - ], - [ - 'd895626548b65b81e264c7637c972877d1d72e5f3a925014372e9f6588f6c14b', - 'febfaa38f2bc7eae728ec60818c340eb03428d632bb067e179363ed75d7d991f' - ], - [ - 'b8da94032a957518eb0f6433571e8761ceffc73693e84edd49150a564f676e03', - '2804dfa44805a1e4d7c99cc9762808b092cc584d95ff3b511488e4e74efdf6e7' - ], - [ - 'e80fea14441fb33a7d8adab9475d7fab2019effb5156a792f1a11778e3c0df5d', - 'eed1de7f638e00771e89768ca3ca94472d155e80af322ea9fcb4291b6ac9ec78' - ], - [ - 'a301697bdfcd704313ba48e51d567543f2a182031efd6915ddc07bbcc4e16070', - '7370f91cfb67e4f5081809fa25d40f9b1735dbf7c0a11a130c0d1a041e177ea1' - ], - [ - '90ad85b389d6b936463f9d0512678de208cc330b11307fffab7ac63e3fb04ed4', - 'e507a3620a38261affdcbd9427222b839aefabe1582894d991d4d48cb6ef150' - ], - [ - '8f68b9d2f63b5f339239c1ad981f162ee88c5678723ea3351b7b444c9ec4c0da', - '662a9f2dba063986de1d90c2b6be215dbbea2cfe95510bfdf23cbf79501fff82' - ], - [ - 'e4f3fb0176af85d65ff99ff9198c36091f48e86503681e3e6686fd5053231e11', - '1e63633ad0ef4f1c1661a6d0ea02b7286cc7e74ec951d1c9822c38576feb73bc' - ], - [ - '8c00fa9b18ebf331eb961537a45a4266c7034f2f0d4e1d0716fb6eae20eae29e', - 'efa47267fea521a1a9dc343a3736c974c2fadafa81e36c54e7d2a4c66702414b' - ], - [ - 'e7a26ce69dd4829f3e10cec0a9e98ed3143d084f308b92c0997fddfc60cb3e41', - '2a758e300fa7984b471b006a1aafbb18d0a6b2c0420e83e20e8a9421cf2cfd51' - ], - [ - 'b6459e0ee3662ec8d23540c223bcbdc571cbcb967d79424f3cf29eb3de6b80ef', - '67c876d06f3e06de1dadf16e5661db3c4b3ae6d48e35b2ff30bf0b61a71ba45' - ], - [ - 'd68a80c8280bb840793234aa118f06231d6f1fc67e73c5a5deda0f5b496943e8', - 'db8ba9fff4b586d00c4b1f9177b0e28b5b0e7b8f7845295a294c84266b133120' - ], - [ - '324aed7df65c804252dc0270907a30b09612aeb973449cea4095980fc28d3d5d', - '648a365774b61f2ff130c0c35aec1f4f19213b0c7e332843967224af96ab7c84' - ], - [ - '4df9c14919cde61f6d51dfdbe5fee5dceec4143ba8d1ca888e8bd373fd054c96', - '35ec51092d8728050974c23a1d85d4b5d506cdc288490192ebac06cad10d5d' - ], - [ - '9c3919a84a474870faed8a9c1cc66021523489054d7f0308cbfc99c8ac1f98cd', - 'ddb84f0f4a4ddd57584f044bf260e641905326f76c64c8e6be7e5e03d4fc599d' - ], - [ - '6057170b1dd12fdf8de05f281d8e06bb91e1493a8b91d4cc5a21382120a959e5', - '9a1af0b26a6a4807add9a2daf71df262465152bc3ee24c65e899be932385a2a8' - ], - [ - 'a576df8e23a08411421439a4518da31880cef0fba7d4df12b1a6973eecb94266', - '40a6bf20e76640b2c92b97afe58cd82c432e10a7f514d9f3ee8be11ae1b28ec8' - ], - [ - '7778a78c28dec3e30a05fe9629de8c38bb30d1f5cf9a3a208f763889be58ad71', - '34626d9ab5a5b22ff7098e12f2ff580087b38411ff24ac563b513fc1fd9f43ac' - ], - [ - '928955ee637a84463729fd30e7afd2ed5f96274e5ad7e5cb09eda9c06d903ac', - 'c25621003d3f42a827b78a13093a95eeac3d26efa8a8d83fc5180e935bcd091f' - ], - [ - '85d0fef3ec6db109399064f3a0e3b2855645b4a907ad354527aae75163d82751', - '1f03648413a38c0be29d496e582cf5663e8751e96877331582c237a24eb1f962' - ], - [ - 'ff2b0dce97eece97c1c9b6041798b85dfdfb6d8882da20308f5404824526087e', - '493d13fef524ba188af4c4dc54d07936c7b7ed6fb90e2ceb2c951e01f0c29907' - ], - [ - '827fbbe4b1e880ea9ed2b2e6301b212b57f1ee148cd6dd28780e5e2cf856e241', - 'c60f9c923c727b0b71bef2c67d1d12687ff7a63186903166d605b68baec293ec' - ], - [ - 'eaa649f21f51bdbae7be4ae34ce6e5217a58fdce7f47f9aa7f3b58fa2120e2b3', - 'be3279ed5bbbb03ac69a80f89879aa5a01a6b965f13f7e59d47a5305ba5ad93d' - ], - [ - 'e4a42d43c5cf169d9391df6decf42ee541b6d8f0c9a137401e23632dda34d24f', - '4d9f92e716d1c73526fc99ccfb8ad34ce886eedfa8d8e4f13a7f7131deba9414' - ], - [ - '1ec80fef360cbdd954160fadab352b6b92b53576a88fea4947173b9d4300bf19', - 'aeefe93756b5340d2f3a4958a7abbf5e0146e77f6295a07b671cdc1cc107cefd' - ], - [ - '146a778c04670c2f91b00af4680dfa8bce3490717d58ba889ddb5928366642be', - 'b318e0ec3354028add669827f9d4b2870aaa971d2f7e5ed1d0b297483d83efd0' - ], - [ - 'fa50c0f61d22e5f07e3acebb1aa07b128d0012209a28b9776d76a8793180eef9', - '6b84c6922397eba9b72cd2872281a68a5e683293a57a213b38cd8d7d3f4f2811' - ], - [ - 'da1d61d0ca721a11b1a5bf6b7d88e8421a288ab5d5bba5220e53d32b5f067ec2', - '8157f55a7c99306c79c0766161c91e2966a73899d279b48a655fba0f1ad836f1' - ], - [ - 'a8e282ff0c9706907215ff98e8fd416615311de0446f1e062a73b0610d064e13', - '7f97355b8db81c09abfb7f3c5b2515888b679a3e50dd6bd6cef7c73111f4cc0c' - ], - [ - '174a53b9c9a285872d39e56e6913cab15d59b1fa512508c022f382de8319497c', - 'ccc9dc37abfc9c1657b4155f2c47f9e6646b3a1d8cb9854383da13ac079afa73' - ], - [ - '959396981943785c3d3e57edf5018cdbe039e730e4918b3d884fdff09475b7ba', - '2e7e552888c331dd8ba0386a4b9cd6849c653f64c8709385e9b8abf87524f2fd' - ], - [ - 'd2a63a50ae401e56d645a1153b109a8fcca0a43d561fba2dbb51340c9d82b151', - 'e82d86fb6443fcb7565aee58b2948220a70f750af484ca52d4142174dcf89405' - ], - [ - '64587e2335471eb890ee7896d7cfdc866bacbdbd3839317b3436f9b45617e073', - 'd99fcdd5bf6902e2ae96dd6447c299a185b90a39133aeab358299e5e9faf6589' - ], - [ - '8481bde0e4e4d885b3a546d3e549de042f0aa6cea250e7fd358d6c86dd45e458', - '38ee7b8cba5404dd84a25bf39cecb2ca900a79c42b262e556d64b1b59779057e' - ], - [ - '13464a57a78102aa62b6979ae817f4637ffcfed3c4b1ce30bcd6303f6caf666b', - '69be159004614580ef7e433453ccb0ca48f300a81d0942e13f495a907f6ecc27' - ], - [ - 'bc4a9df5b713fe2e9aef430bcc1dc97a0cd9ccede2f28588cada3a0d2d83f366', - 'd3a81ca6e785c06383937adf4b798caa6e8a9fbfa547b16d758d666581f33c1' - ], - [ - '8c28a97bf8298bc0d23d8c749452a32e694b65e30a9472a3954ab30fe5324caa', - '40a30463a3305193378fedf31f7cc0eb7ae784f0451cb9459e71dc73cbef9482' - ], - [ - '8ea9666139527a8c1dd94ce4f071fd23c8b350c5a4bb33748c4ba111faccae0', - '620efabbc8ee2782e24e7c0cfb95c5d735b783be9cf0f8e955af34a30e62b945' - ], - [ - 'dd3625faef5ba06074669716bbd3788d89bdde815959968092f76cc4eb9a9787', - '7a188fa3520e30d461da2501045731ca941461982883395937f68d00c644a573' - ], - [ - 'f710d79d9eb962297e4f6232b40e8f7feb2bc63814614d692c12de752408221e', - 'ea98e67232d3b3295d3b535532115ccac8612c721851617526ae47a9c77bfc82' - ] - ] - }, - naf: { - wnd: 7, - points: [ - [ - 'f9308a019258c31049344f85f89d5229b531c845836f99b08601f113bce036f9', - '388f7b0f632de8140fe337e62a37f3566500a99934c2231b6cb9fd7584b8e672' - ], - [ - '2f8bde4d1a07209355b4a7250a5c5128e88b84bddc619ab7cba8d569b240efe4', - 'd8ac222636e5e3d6d4dba9dda6c9c426f788271bab0d6840dca87d3aa6ac62d6' - ], - [ - '5cbdf0646e5db4eaa398f365f2ea7a0e3d419b7e0330e39ce92bddedcac4f9bc', - '6aebca40ba255960a3178d6d861a54dba813d0b813fde7b5a5082628087264da' - ], - [ - 'acd484e2f0c7f65309ad178a9f559abde09796974c57e714c35f110dfc27ccbe', - 'cc338921b0a7d9fd64380971763b61e9add888a4375f8e0f05cc262ac64f9c37' - ], - [ - '774ae7f858a9411e5ef4246b70c65aac5649980be5c17891bbec17895da008cb', - 'd984a032eb6b5e190243dd56d7b7b365372db1e2dff9d6a8301d74c9c953c61b' - ], - [ - 'f28773c2d975288bc7d1d205c3748651b075fbc6610e58cddeeddf8f19405aa8', - 'ab0902e8d880a89758212eb65cdaf473a1a06da521fa91f29b5cb52db03ed81' - ], - [ - 'd7924d4f7d43ea965a465ae3095ff41131e5946f3c85f79e44adbcf8e27e080e', - '581e2872a86c72a683842ec228cc6defea40af2bd896d3a5c504dc9ff6a26b58' - ], - [ - 'defdea4cdb677750a420fee807eacf21eb9898ae79b9768766e4faa04a2d4a34', - '4211ab0694635168e997b0ead2a93daeced1f4a04a95c0f6cfb199f69e56eb77' - ], - [ - '2b4ea0a797a443d293ef5cff444f4979f06acfebd7e86d277475656138385b6c', - '85e89bc037945d93b343083b5a1c86131a01f60c50269763b570c854e5c09b7a' - ], - [ - '352bbf4a4cdd12564f93fa332ce333301d9ad40271f8107181340aef25be59d5', - '321eb4075348f534d59c18259dda3e1f4a1b3b2e71b1039c67bd3d8bcf81998c' - ], - [ - '2fa2104d6b38d11b0230010559879124e42ab8dfeff5ff29dc9cdadd4ecacc3f', - '2de1068295dd865b64569335bd5dd80181d70ecfc882648423ba76b532b7d67' - ], - [ - '9248279b09b4d68dab21a9b066edda83263c3d84e09572e269ca0cd7f5453714', - '73016f7bf234aade5d1aa71bdea2b1ff3fc0de2a887912ffe54a32ce97cb3402' - ], - [ - 'daed4f2be3a8bf278e70132fb0beb7522f570e144bf615c07e996d443dee8729', - 'a69dce4a7d6c98e8d4a1aca87ef8d7003f83c230f3afa726ab40e52290be1c55' - ], - [ - 'c44d12c7065d812e8acf28d7cbb19f9011ecd9e9fdf281b0e6a3b5e87d22e7db', - '2119a460ce326cdc76c45926c982fdac0e106e861edf61c5a039063f0e0e6482' - ], - [ - '6a245bf6dc698504c89a20cfded60853152b695336c28063b61c65cbd269e6b4', - 'e022cf42c2bd4a708b3f5126f16a24ad8b33ba48d0423b6efd5e6348100d8a82' - ], - [ - '1697ffa6fd9de627c077e3d2fe541084ce13300b0bec1146f95ae57f0d0bd6a5', - 'b9c398f186806f5d27561506e4557433a2cf15009e498ae7adee9d63d01b2396' - ], - [ - '605bdb019981718b986d0f07e834cb0d9deb8360ffb7f61df982345ef27a7479', - '2972d2de4f8d20681a78d93ec96fe23c26bfae84fb14db43b01e1e9056b8c49' - ], - [ - '62d14dab4150bf497402fdc45a215e10dcb01c354959b10cfe31c7e9d87ff33d', - '80fc06bd8cc5b01098088a1950eed0db01aa132967ab472235f5642483b25eaf' - ], - [ - '80c60ad0040f27dade5b4b06c408e56b2c50e9f56b9b8b425e555c2f86308b6f', - '1c38303f1cc5c30f26e66bad7fe72f70a65eed4cbe7024eb1aa01f56430bd57a' - ], - [ - '7a9375ad6167ad54aa74c6348cc54d344cc5dc9487d847049d5eabb0fa03c8fb', - 'd0e3fa9eca8726909559e0d79269046bdc59ea10c70ce2b02d499ec224dc7f7' - ], - [ - 'd528ecd9b696b54c907a9ed045447a79bb408ec39b68df504bb51f459bc3ffc9', - 'eecf41253136e5f99966f21881fd656ebc4345405c520dbc063465b521409933' - ], - [ - '49370a4b5f43412ea25f514e8ecdad05266115e4a7ecb1387231808f8b45963', - '758f3f41afd6ed428b3081b0512fd62a54c3f3afbb5b6764b653052a12949c9a' - ], - [ - '77f230936ee88cbbd73df930d64702ef881d811e0e1498e2f1c13eb1fc345d74', - '958ef42a7886b6400a08266e9ba1b37896c95330d97077cbbe8eb3c7671c60d6' - ], - [ - 'f2dac991cc4ce4b9ea44887e5c7c0bce58c80074ab9d4dbaeb28531b7739f530', - 'e0dedc9b3b2f8dad4da1f32dec2531df9eb5fbeb0598e4fd1a117dba703a3c37' - ], - [ - '463b3d9f662621fb1b4be8fbbe2520125a216cdfc9dae3debcba4850c690d45b', - '5ed430d78c296c3543114306dd8622d7c622e27c970a1de31cb377b01af7307e' - ], - [ - 'f16f804244e46e2a09232d4aff3b59976b98fac14328a2d1a32496b49998f247', - 'cedabd9b82203f7e13d206fcdf4e33d92a6c53c26e5cce26d6579962c4e31df6' - ], - [ - 'caf754272dc84563b0352b7a14311af55d245315ace27c65369e15f7151d41d1', - 'cb474660ef35f5f2a41b643fa5e460575f4fa9b7962232a5c32f908318a04476' - ], - [ - '2600ca4b282cb986f85d0f1709979d8b44a09c07cb86d7c124497bc86f082120', - '4119b88753c15bd6a693b03fcddbb45d5ac6be74ab5f0ef44b0be9475a7e4b40' - ], - [ - '7635ca72d7e8432c338ec53cd12220bc01c48685e24f7dc8c602a7746998e435', - '91b649609489d613d1d5e590f78e6d74ecfc061d57048bad9e76f302c5b9c61' - ], - [ - '754e3239f325570cdbbf4a87deee8a66b7f2b33479d468fbc1a50743bf56cc18', - '673fb86e5bda30fb3cd0ed304ea49a023ee33d0197a695d0c5d98093c536683' - ], - [ - 'e3e6bd1071a1e96aff57859c82d570f0330800661d1c952f9fe2694691d9b9e8', - '59c9e0bba394e76f40c0aa58379a3cb6a5a2283993e90c4167002af4920e37f5' - ], - [ - '186b483d056a033826ae73d88f732985c4ccb1f32ba35f4b4cc47fdcf04aa6eb', - '3b952d32c67cf77e2e17446e204180ab21fb8090895138b4a4a797f86e80888b' - ], - [ - 'df9d70a6b9876ce544c98561f4be4f725442e6d2b737d9c91a8321724ce0963f', - '55eb2dafd84d6ccd5f862b785dc39d4ab157222720ef9da217b8c45cf2ba2417' - ], - [ - '5edd5cc23c51e87a497ca815d5dce0f8ab52554f849ed8995de64c5f34ce7143', - 'efae9c8dbc14130661e8cec030c89ad0c13c66c0d17a2905cdc706ab7399a868' - ], - [ - '290798c2b6476830da12fe02287e9e777aa3fba1c355b17a722d362f84614fba', - 'e38da76dcd440621988d00bcf79af25d5b29c094db2a23146d003afd41943e7a' - ], - [ - 'af3c423a95d9f5b3054754efa150ac39cd29552fe360257362dfdecef4053b45', - 'f98a3fd831eb2b749a93b0e6f35cfb40c8cd5aa667a15581bc2feded498fd9c6' - ], - [ - '766dbb24d134e745cccaa28c99bf274906bb66b26dcf98df8d2fed50d884249a', - '744b1152eacbe5e38dcc887980da38b897584a65fa06cedd2c924f97cbac5996' - ], - [ - '59dbf46f8c94759ba21277c33784f41645f7b44f6c596a58ce92e666191abe3e', - 'c534ad44175fbc300f4ea6ce648309a042ce739a7919798cd85e216c4a307f6e' - ], - [ - 'f13ada95103c4537305e691e74e9a4a8dd647e711a95e73cb62dc6018cfd87b8', - 'e13817b44ee14de663bf4bc808341f326949e21a6a75c2570778419bdaf5733d' - ], - [ - '7754b4fa0e8aced06d4167a2c59cca4cda1869c06ebadfb6488550015a88522c', - '30e93e864e669d82224b967c3020b8fa8d1e4e350b6cbcc537a48b57841163a2' - ], - [ - '948dcadf5990e048aa3874d46abef9d701858f95de8041d2a6828c99e2262519', - 'e491a42537f6e597d5d28a3224b1bc25df9154efbd2ef1d2cbba2cae5347d57e' - ], - [ - '7962414450c76c1689c7b48f8202ec37fb224cf5ac0bfa1570328a8a3d7c77ab', - '100b610ec4ffb4760d5c1fc133ef6f6b12507a051f04ac5760afa5b29db83437' - ], - [ - '3514087834964b54b15b160644d915485a16977225b8847bb0dd085137ec47ca', - 'ef0afbb2056205448e1652c48e8127fc6039e77c15c2378b7e7d15a0de293311' - ], - [ - 'd3cc30ad6b483e4bc79ce2c9dd8bc54993e947eb8df787b442943d3f7b527eaf', - '8b378a22d827278d89c5e9be8f9508ae3c2ad46290358630afb34db04eede0a4' - ], - [ - '1624d84780732860ce1c78fcbfefe08b2b29823db913f6493975ba0ff4847610', - '68651cf9b6da903e0914448c6cd9d4ca896878f5282be4c8cc06e2a404078575' - ], - [ - '733ce80da955a8a26902c95633e62a985192474b5af207da6df7b4fd5fc61cd4', - 'f5435a2bd2badf7d485a4d8b8db9fcce3e1ef8e0201e4578c54673bc1dc5ea1d' - ], - [ - '15d9441254945064cf1a1c33bbd3b49f8966c5092171e699ef258dfab81c045c', - 'd56eb30b69463e7234f5137b73b84177434800bacebfc685fc37bbe9efe4070d' - ], - [ - 'a1d0fcf2ec9de675b612136e5ce70d271c21417c9d2b8aaaac138599d0717940', - 'edd77f50bcb5a3cab2e90737309667f2641462a54070f3d519212d39c197a629' - ], - [ - 'e22fbe15c0af8ccc5780c0735f84dbe9a790badee8245c06c7ca37331cb36980', - 'a855babad5cd60c88b430a69f53a1a7a38289154964799be43d06d77d31da06' - ], - [ - '311091dd9860e8e20ee13473c1155f5f69635e394704eaa74009452246cfa9b3', - '66db656f87d1f04fffd1f04788c06830871ec5a64feee685bd80f0b1286d8374' - ], - [ - '34c1fd04d301be89b31c0442d3e6ac24883928b45a9340781867d4232ec2dbdf', - '9414685e97b1b5954bd46f730174136d57f1ceeb487443dc5321857ba73abee' - ], - [ - 'f219ea5d6b54701c1c14de5b557eb42a8d13f3abbcd08affcc2a5e6b049b8d63', - '4cb95957e83d40b0f73af4544cccf6b1f4b08d3c07b27fb8d8c2962a400766d1' - ], - [ - 'd7b8740f74a8fbaab1f683db8f45de26543a5490bca627087236912469a0b448', - 'fa77968128d9c92ee1010f337ad4717eff15db5ed3c049b3411e0315eaa4593b' - ], - [ - '32d31c222f8f6f0ef86f7c98d3a3335ead5bcd32abdd94289fe4d3091aa824bf', - '5f3032f5892156e39ccd3d7915b9e1da2e6dac9e6f26e961118d14b8462e1661' - ], - [ - '7461f371914ab32671045a155d9831ea8793d77cd59592c4340f86cbc18347b5', - '8ec0ba238b96bec0cbdddcae0aa442542eee1ff50c986ea6b39847b3cc092ff6' - ], - [ - 'ee079adb1df1860074356a25aa38206a6d716b2c3e67453d287698bad7b2b2d6', - '8dc2412aafe3be5c4c5f37e0ecc5f9f6a446989af04c4e25ebaac479ec1c8c1e' - ], - [ - '16ec93e447ec83f0467b18302ee620f7e65de331874c9dc72bfd8616ba9da6b5', - '5e4631150e62fb40d0e8c2a7ca5804a39d58186a50e497139626778e25b0674d' - ], - [ - 'eaa5f980c245f6f038978290afa70b6bd8855897f98b6aa485b96065d537bd99', - 'f65f5d3e292c2e0819a528391c994624d784869d7e6ea67fb18041024edc07dc' - ], - [ - '78c9407544ac132692ee1910a02439958ae04877151342ea96c4b6b35a49f51', - 'f3e0319169eb9b85d5404795539a5e68fa1fbd583c064d2462b675f194a3ddb4' - ], - [ - '494f4be219a1a77016dcd838431aea0001cdc8ae7a6fc688726578d9702857a5', - '42242a969283a5f339ba7f075e36ba2af925ce30d767ed6e55f4b031880d562c' - ], - [ - 'a598a8030da6d86c6bc7f2f5144ea549d28211ea58faa70ebf4c1e665c1fe9b5', - '204b5d6f84822c307e4b4a7140737aec23fc63b65b35f86a10026dbd2d864e6b' - ], - [ - 'c41916365abb2b5d09192f5f2dbeafec208f020f12570a184dbadc3e58595997', - '4f14351d0087efa49d245b328984989d5caf9450f34bfc0ed16e96b58fa9913' - ], - [ - '841d6063a586fa475a724604da03bc5b92a2e0d2e0a36acfe4c73a5514742881', - '73867f59c0659e81904f9a1c7543698e62562d6744c169ce7a36de01a8d6154' - ], - [ - '5e95bb399a6971d376026947f89bde2f282b33810928be4ded112ac4d70e20d5', - '39f23f366809085beebfc71181313775a99c9aed7d8ba38b161384c746012865' - ], - [ - '36e4641a53948fd476c39f8a99fd974e5ec07564b5315d8bf99471bca0ef2f66', - 'd2424b1b1abe4eb8164227b085c9aa9456ea13493fd563e06fd51cf5694c78fc' - ], - [ - '336581ea7bfbbb290c191a2f507a41cf5643842170e914faeab27c2c579f726', - 'ead12168595fe1be99252129b6e56b3391f7ab1410cd1e0ef3dcdcabd2fda224' - ], - [ - '8ab89816dadfd6b6a1f2634fcf00ec8403781025ed6890c4849742706bd43ede', - '6fdcef09f2f6d0a044e654aef624136f503d459c3e89845858a47a9129cdd24e' - ], - [ - '1e33f1a746c9c5778133344d9299fcaa20b0938e8acff2544bb40284b8c5fb94', - '60660257dd11b3aa9c8ed618d24edff2306d320f1d03010e33a7d2057f3b3b6' - ], - [ - '85b7c1dcb3cec1b7ee7f30ded79dd20a0ed1f4cc18cbcfcfa410361fd8f08f31', - '3d98a9cdd026dd43f39048f25a8847f4fcafad1895d7a633c6fed3c35e999511' - ], - [ - '29df9fbd8d9e46509275f4b125d6d45d7fbe9a3b878a7af872a2800661ac5f51', - 'b4c4fe99c775a606e2d8862179139ffda61dc861c019e55cd2876eb2a27d84b' - ], - [ - 'a0b1cae06b0a847a3fea6e671aaf8adfdfe58ca2f768105c8082b2e449fce252', - 'ae434102edde0958ec4b19d917a6a28e6b72da1834aff0e650f049503a296cf2' - ], - [ - '4e8ceafb9b3e9a136dc7ff67e840295b499dfb3b2133e4ba113f2e4c0e121e5', - 'cf2174118c8b6d7a4b48f6d534ce5c79422c086a63460502b827ce62a326683c' - ], - [ - 'd24a44e047e19b6f5afb81c7ca2f69080a5076689a010919f42725c2b789a33b', - '6fb8d5591b466f8fc63db50f1c0f1c69013f996887b8244d2cdec417afea8fa3' - ], - [ - 'ea01606a7a6c9cdd249fdfcfacb99584001edd28abbab77b5104e98e8e3b35d4', - '322af4908c7312b0cfbfe369f7a7b3cdb7d4494bc2823700cfd652188a3ea98d' - ], - [ - 'af8addbf2b661c8a6c6328655eb96651252007d8c5ea31be4ad196de8ce2131f', - '6749e67c029b85f52a034eafd096836b2520818680e26ac8f3dfbcdb71749700' - ], - [ - 'e3ae1974566ca06cc516d47e0fb165a674a3dabcfca15e722f0e3450f45889', - '2aeabe7e4531510116217f07bf4d07300de97e4874f81f533420a72eeb0bd6a4' - ], - [ - '591ee355313d99721cf6993ffed1e3e301993ff3ed258802075ea8ced397e246', - 'b0ea558a113c30bea60fc4775460c7901ff0b053d25ca2bdeee98f1a4be5d196' - ], - [ - '11396d55fda54c49f19aa97318d8da61fa8584e47b084945077cf03255b52984', - '998c74a8cd45ac01289d5833a7beb4744ff536b01b257be4c5767bea93ea57a4' - ], - [ - '3c5d2a1ba39c5a1790000738c9e0c40b8dcdfd5468754b6405540157e017aa7a', - 'b2284279995a34e2f9d4de7396fc18b80f9b8b9fdd270f6661f79ca4c81bd257' - ], - [ - 'cc8704b8a60a0defa3a99a7299f2e9c3fbc395afb04ac078425ef8a1793cc030', - 'bdd46039feed17881d1e0862db347f8cf395b74fc4bcdc4e940b74e3ac1f1b13' - ], - [ - 'c533e4f7ea8555aacd9777ac5cad29b97dd4defccc53ee7ea204119b2889b197', - '6f0a256bc5efdf429a2fb6242f1a43a2d9b925bb4a4b3a26bb8e0f45eb596096' - ], - [ - 'c14f8f2ccb27d6f109f6d08d03cc96a69ba8c34eec07bbcf566d48e33da6593', - 'c359d6923bb398f7fd4473e16fe1c28475b740dd098075e6c0e8649113dc3a38' - ], - [ - 'a6cbc3046bc6a450bac24789fa17115a4c9739ed75f8f21ce441f72e0b90e6ef', - '21ae7f4680e889bb130619e2c0f95a360ceb573c70603139862afd617fa9b9f' - ], - [ - '347d6d9a02c48927ebfb86c1359b1caf130a3c0267d11ce6344b39f99d43cc38', - '60ea7f61a353524d1c987f6ecec92f086d565ab687870cb12689ff1e31c74448' - ], - [ - 'da6545d2181db8d983f7dcb375ef5866d47c67b1bf31c8cf855ef7437b72656a', - '49b96715ab6878a79e78f07ce5680c5d6673051b4935bd897fea824b77dc208a' - ], - [ - 'c40747cc9d012cb1a13b8148309c6de7ec25d6945d657146b9d5994b8feb1111', - '5ca560753be2a12fc6de6caf2cb489565db936156b9514e1bb5e83037e0fa2d4' - ], - [ - '4e42c8ec82c99798ccf3a610be870e78338c7f713348bd34c8203ef4037f3502', - '7571d74ee5e0fb92a7a8b33a07783341a5492144cc54bcc40a94473693606437' - ], - [ - '3775ab7089bc6af823aba2e1af70b236d251cadb0c86743287522a1b3b0dedea', - 'be52d107bcfa09d8bcb9736a828cfa7fac8db17bf7a76a2c42ad961409018cf7' - ], - [ - 'cee31cbf7e34ec379d94fb814d3d775ad954595d1314ba8846959e3e82f74e26', - '8fd64a14c06b589c26b947ae2bcf6bfa0149ef0be14ed4d80f448a01c43b1c6d' - ], - [ - 'b4f9eaea09b6917619f6ea6a4eb5464efddb58fd45b1ebefcdc1a01d08b47986', - '39e5c9925b5a54b07433a4f18c61726f8bb131c012ca542eb24a8ac07200682a' - ], - [ - 'd4263dfc3d2df923a0179a48966d30ce84e2515afc3dccc1b77907792ebcc60e', - '62dfaf07a0f78feb30e30d6295853ce189e127760ad6cf7fae164e122a208d54' - ], - [ - '48457524820fa65a4f8d35eb6930857c0032acc0a4a2de422233eeda897612c4', - '25a748ab367979d98733c38a1fa1c2e7dc6cc07db2d60a9ae7a76aaa49bd0f77' - ], - [ - 'dfeeef1881101f2cb11644f3a2afdfc2045e19919152923f367a1767c11cceda', - 'ecfb7056cf1de042f9420bab396793c0c390bde74b4bbdff16a83ae09a9a7517' - ], - [ - '6d7ef6b17543f8373c573f44e1f389835d89bcbc6062ced36c82df83b8fae859', - 'cd450ec335438986dfefa10c57fea9bcc521a0959b2d80bbf74b190dca712d10' - ], - [ - 'e75605d59102a5a2684500d3b991f2e3f3c88b93225547035af25af66e04541f', - 'f5c54754a8f71ee540b9b48728473e314f729ac5308b06938360990e2bfad125' - ], - [ - 'eb98660f4c4dfaa06a2be453d5020bc99a0c2e60abe388457dd43fefb1ed620c', - '6cb9a8876d9cb8520609af3add26cd20a0a7cd8a9411131ce85f44100099223e' - ], - [ - '13e87b027d8514d35939f2e6892b19922154596941888336dc3563e3b8dba942', - 'fef5a3c68059a6dec5d624114bf1e91aac2b9da568d6abeb2570d55646b8adf1' - ], - [ - 'ee163026e9fd6fe017c38f06a5be6fc125424b371ce2708e7bf4491691e5764a', - '1acb250f255dd61c43d94ccc670d0f58f49ae3fa15b96623e5430da0ad6c62b2' - ], - [ - 'b268f5ef9ad51e4d78de3a750c2dc89b1e626d43505867999932e5db33af3d80', - '5f310d4b3c99b9ebb19f77d41c1dee018cf0d34fd4191614003e945a1216e423' - ], - [ - 'ff07f3118a9df035e9fad85eb6c7bfe42b02f01ca99ceea3bf7ffdba93c4750d', - '438136d603e858a3a5c440c38eccbaddc1d2942114e2eddd4740d098ced1f0d8' - ], - [ - '8d8b9855c7c052a34146fd20ffb658bea4b9f69e0d825ebec16e8c3ce2b526a1', - 'cdb559eedc2d79f926baf44fb84ea4d44bcf50fee51d7ceb30e2e7f463036758' - ], - [ - '52db0b5384dfbf05bfa9d472d7ae26dfe4b851ceca91b1eba54263180da32b63', - 'c3b997d050ee5d423ebaf66a6db9f57b3180c902875679de924b69d84a7b375' - ], - [ - 'e62f9490d3d51da6395efd24e80919cc7d0f29c3f3fa48c6fff543becbd43352', - '6d89ad7ba4876b0b22c2ca280c682862f342c8591f1daf5170e07bfd9ccafa7d' - ], - [ - '7f30ea2476b399b4957509c88f77d0191afa2ff5cb7b14fd6d8e7d65aaab1193', - 'ca5ef7d4b231c94c3b15389a5f6311e9daff7bb67b103e9880ef4bff637acaec' - ], - [ - '5098ff1e1d9f14fb46a210fada6c903fef0fb7b4a1dd1d9ac60a0361800b7a00', - '9731141d81fc8f8084d37c6e7542006b3ee1b40d60dfe5362a5b132fd17ddc0' - ], - [ - '32b78c7de9ee512a72895be6b9cbefa6e2f3c4ccce445c96b9f2c81e2778ad58', - 'ee1849f513df71e32efc3896ee28260c73bb80547ae2275ba497237794c8753c' - ], - [ - 'e2cb74fddc8e9fbcd076eef2a7c72b0ce37d50f08269dfc074b581550547a4f7', - 'd3aa2ed71c9dd2247a62df062736eb0baddea9e36122d2be8641abcb005cc4a4' - ], - [ - '8438447566d4d7bedadc299496ab357426009a35f235cb141be0d99cd10ae3a8', - 'c4e1020916980a4da5d01ac5e6ad330734ef0d7906631c4f2390426b2edd791f' - ], - [ - '4162d488b89402039b584c6fc6c308870587d9c46f660b878ab65c82c711d67e', - '67163e903236289f776f22c25fb8a3afc1732f2b84b4e95dbda47ae5a0852649' - ], - [ - '3fad3fa84caf0f34f0f89bfd2dcf54fc175d767aec3e50684f3ba4a4bf5f683d', - 'cd1bc7cb6cc407bb2f0ca647c718a730cf71872e7d0d2a53fa20efcdfe61826' - ], - [ - '674f2600a3007a00568c1a7ce05d0816c1fb84bf1370798f1c69532faeb1a86b', - '299d21f9413f33b3edf43b257004580b70db57da0b182259e09eecc69e0d38a5' - ], - [ - 'd32f4da54ade74abb81b815ad1fb3b263d82d6c692714bcff87d29bd5ee9f08f', - 'f9429e738b8e53b968e99016c059707782e14f4535359d582fc416910b3eea87' - ], - [ - '30e4e670435385556e593657135845d36fbb6931f72b08cb1ed954f1e3ce3ff6', - '462f9bce619898638499350113bbc9b10a878d35da70740dc695a559eb88db7b' - ], - [ - 'be2062003c51cc3004682904330e4dee7f3dcd10b01e580bf1971b04d4cad297', - '62188bc49d61e5428573d48a74e1c655b1c61090905682a0d5558ed72dccb9bc' - ], - [ - '93144423ace3451ed29e0fb9ac2af211cb6e84a601df5993c419859fff5df04a', - '7c10dfb164c3425f5c71a3f9d7992038f1065224f72bb9d1d902a6d13037b47c' - ], - [ - 'b015f8044f5fcbdcf21ca26d6c34fb8197829205c7b7d2a7cb66418c157b112c', - 'ab8c1e086d04e813744a655b2df8d5f83b3cdc6faa3088c1d3aea1454e3a1d5f' - ], - [ - 'd5e9e1da649d97d89e4868117a465a3a4f8a18de57a140d36b3f2af341a21b52', - '4cb04437f391ed73111a13cc1d4dd0db1693465c2240480d8955e8592f27447a' - ], - [ - 'd3ae41047dd7ca065dbf8ed77b992439983005cd72e16d6f996a5316d36966bb', - 'bd1aeb21ad22ebb22a10f0303417c6d964f8cdd7df0aca614b10dc14d125ac46' - ], - [ - '463e2763d885f958fc66cdd22800f0a487197d0a82e377b49f80af87c897b065', - 'bfefacdb0e5d0fd7df3a311a94de062b26b80c61fbc97508b79992671ef7ca7f' - ], - [ - '7985fdfd127c0567c6f53ec1bb63ec3158e597c40bfe747c83cddfc910641917', - '603c12daf3d9862ef2b25fe1de289aed24ed291e0ec6708703a5bd567f32ed03' - ], - [ - '74a1ad6b5f76e39db2dd249410eac7f99e74c59cb83d2d0ed5ff1543da7703e9', - 'cc6157ef18c9c63cd6193d83631bbea0093e0968942e8c33d5737fd790e0db08' - ], - [ - '30682a50703375f602d416664ba19b7fc9bab42c72747463a71d0896b22f6da3', - '553e04f6b018b4fa6c8f39e7f311d3176290d0e0f19ca73f17714d9977a22ff8' - ], - [ - '9e2158f0d7c0d5f26c3791efefa79597654e7a2b2464f52b1ee6c1347769ef57', - '712fcdd1b9053f09003a3481fa7762e9ffd7c8ef35a38509e2fbf2629008373' - ], - [ - '176e26989a43c9cfeba4029c202538c28172e566e3c4fce7322857f3be327d66', - 'ed8cc9d04b29eb877d270b4878dc43c19aefd31f4eee09ee7b47834c1fa4b1c3' - ], - [ - '75d46efea3771e6e68abb89a13ad747ecf1892393dfc4f1b7004788c50374da8', - '9852390a99507679fd0b86fd2b39a868d7efc22151346e1a3ca4726586a6bed8' - ], - [ - '809a20c67d64900ffb698c4c825f6d5f2310fb0451c869345b7319f645605721', - '9e994980d9917e22b76b061927fa04143d096ccc54963e6a5ebfa5f3f8e286c1' - ], - [ - '1b38903a43f7f114ed4500b4eac7083fdefece1cf29c63528d563446f972c180', - '4036edc931a60ae889353f77fd53de4a2708b26b6f5da72ad3394119daf408f9' - ] - ] - } -}; - -},{}],85:[function(require,module,exports){ -'use strict'; - -var utils = exports; -var BN = require('bn.js'); -var minAssert = require('minimalistic-assert'); -var minUtils = require('minimalistic-crypto-utils'); - -utils.assert = minAssert; -utils.toArray = minUtils.toArray; -utils.zero2 = minUtils.zero2; -utils.toHex = minUtils.toHex; -utils.encode = minUtils.encode; - -// Represent num in a w-NAF form -function getNAF(num, w) { - var naf = []; - var ws = 1 << (w + 1); - var k = num.clone(); - while (k.cmpn(1) >= 0) { - var z; - if (k.isOdd()) { - var mod = k.andln(ws - 1); - if (mod > (ws >> 1) - 1) - z = (ws >> 1) - mod; - else - z = mod; - k.isubn(z); - } else { - z = 0; - } - naf.push(z); - - // Optimization, shift by word if possible - var shift = (k.cmpn(0) !== 0 && k.andln(ws - 1) === 0) ? (w + 1) : 1; - for (var i = 1; i < shift; i++) - naf.push(0); - k.iushrn(shift); - } - - return naf; -} -utils.getNAF = getNAF; - -// Represent k1, k2 in a Joint Sparse Form -function getJSF(k1, k2) { - var jsf = [ - [], - [] - ]; - - k1 = k1.clone(); - k2 = k2.clone(); - var d1 = 0; - var d2 = 0; - while (k1.cmpn(-d1) > 0 || k2.cmpn(-d2) > 0) { + var lo = r & 0x3ffffff; + var carry = (r / 0x4000000) | 0; + out.words[0] = lo; - // First phase - var m14 = (k1.andln(3) + d1) & 3; - var m24 = (k2.andln(3) + d2) & 3; - if (m14 === 3) - m14 = -1; - if (m24 === 3) - m24 = -1; - var u1; - if ((m14 & 1) === 0) { - u1 = 0; - } else { - var m8 = (k1.andln(7) + d1) & 7; - if ((m8 === 3 || m8 === 5) && m24 === 2) - u1 = -m14; - else - u1 = m14; + for (var k = 1; k < len; k++) { + // Sum all words with the same `i + j = k` and accumulate `ncarry`, + // note that ncarry could be >= 0x3ffffff + var ncarry = carry >>> 26; + var rword = carry & 0x3ffffff; + var maxJ = Math.min(k, num.length - 1); + for (var j = Math.max(0, k - self.length + 1); j <= maxJ; j++) { + var i = (k - j) | 0; + a = self.words[i] | 0; + b = num.words[j] | 0; + r = a * b + rword; + ncarry += (r / 0x4000000) | 0; + rword = r & 0x3ffffff; + } + out.words[k] = rword | 0; + carry = ncarry | 0; } - jsf[0].push(u1); - - var u2; - if ((m24 & 1) === 0) { - u2 = 0; + if (carry !== 0) { + out.words[k] = carry | 0; } else { - var m8 = (k2.andln(7) + d2) & 7; - if ((m8 === 3 || m8 === 5) && m14 === 2) - u2 = -m24; - else - u2 = m24; + out.length--; } - jsf[1].push(u2); - // Second phase - if (2 * d1 === u1 + 1) - d1 = 1 - d1; - if (2 * d2 === u2 + 1) - d2 = 1 - d2; - k1.iushrn(1); - k2.iushrn(1); + return out.strip(); } - return jsf; -} -utils.getJSF = getJSF; - -function cachedProperty(obj, name, computer) { - var key = '_' + name; - obj.prototype[name] = function cachedProperty() { - return this[key] !== undefined ? this[key] : - this[key] = computer.call(this); - }; -} -utils.cachedProperty = cachedProperty; - -function parseBytes(bytes) { - return typeof bytes === 'string' ? utils.toArray(bytes, 'hex') : - bytes; -} -utils.parseBytes = parseBytes; - -function intFromLE(bytes) { - return new BN(bytes, 'hex', 'le'); -} -utils.intFromLE = intFromLE; - - -},{"bn.js":20,"minimalistic-assert":109,"minimalistic-crypto-utils":110}],86:[function(require,module,exports){ -module.exports={ - "_args": [ - [ - "elliptic@6.4.1", - "/Users/justin/repos/bitcore/packages/bitcore-build" - ] - ], - "_from": "elliptic@6.4.1", - "_id": "elliptic@6.4.1", - "_inBundle": false, - "_integrity": "sha512-BsXLz5sqX8OHcsh7CqBMztyXARmGQ3LWPtGjJi6DiJHq5C/qvi9P3OqgswKSDftbu8+IoI/QDTAm2fFnQ9SZSQ==", - "_location": "/elliptic", - "_phantomChildren": {}, - "_requested": { - "type": "version", - "registry": true, - "raw": "elliptic@6.4.1", - "name": "elliptic", - "escapedName": "elliptic", - "rawSpec": "6.4.1", - "saveSpec": null, - "fetchSpec": "6.4.1" - }, - "_requiredBy": [ - "/browserify-sign", - "/create-ecdh" - ], - "_resolved": "https://registry.npmjs.org/elliptic/-/elliptic-6.4.1.tgz", - "_spec": "6.4.1", - "_where": "/Users/justin/repos/bitcore/packages/bitcore-build", - "author": { - "name": "Fedor Indutny", - "email": "fedor@indutny.com" - }, - "bugs": { - "url": "https://github.com/indutny/elliptic/issues" - }, - "dependencies": { - "bn.js": "^4.4.0", - "brorand": "^1.0.1", - "hash.js": "^1.0.0", - "hmac-drbg": "^1.0.0", - "inherits": "^2.0.1", - "minimalistic-assert": "^1.0.0", - "minimalistic-crypto-utils": "^1.0.0" - }, - "description": "EC cryptography", - "devDependencies": { - "brfs": "^1.4.3", - "coveralls": "^2.11.3", - "grunt": "^0.4.5", - "grunt-browserify": "^5.0.0", - "grunt-cli": "^1.2.0", - "grunt-contrib-connect": "^1.0.0", - "grunt-contrib-copy": "^1.0.0", - "grunt-contrib-uglify": "^1.0.1", - "grunt-mocha-istanbul": "^3.0.1", - "grunt-saucelabs": "^8.6.2", - "istanbul": "^0.4.2", - "jscs": "^2.9.0", - "jshint": "^2.6.0", - "mocha": "^2.1.0" - }, - "files": [ - "lib" - ], - "homepage": "https://github.com/indutny/elliptic", - "keywords": [ - "EC", - "Elliptic", - "curve", - "Cryptography" - ], - "license": "MIT", - "main": "lib/elliptic.js", - "name": "elliptic", - "repository": { - "type": "git", - "url": "git+ssh://git@github.com/indutny/elliptic.git" - }, - "scripts": { - "jscs": "jscs benchmarks/*.js lib/*.js lib/**/*.js lib/**/**/*.js test/index.js", - "jshint": "jscs benchmarks/*.js lib/*.js lib/**/*.js lib/**/**/*.js test/index.js", - "lint": "npm run jscs && npm run jshint", - "test": "npm run lint && npm run unit", - "unit": "istanbul test _mocha --reporter=spec test/index.js", - "version": "grunt dist && git add dist/" - }, - "version": "6.4.1" -} - -},{}],87:[function(require,module,exports){ -// Copyright Joyent, Inc. and other Node contributors. -// -// Permission is hereby granted, free of charge, to any person obtaining a -// copy of this software and associated documentation files (the -// "Software"), to deal in the Software without restriction, including -// without limitation the rights to use, copy, modify, merge, publish, -// distribute, sublicense, and/or sell copies of the Software, and to permit -// persons to whom the Software is furnished to do so, subject to the -// following conditions: -// -// The above copyright notice and this permission notice shall be included -// in all copies or substantial portions of the Software. -// -// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS -// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF -// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN -// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, -// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR -// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE -// USE OR OTHER DEALINGS IN THE SOFTWARE. - -var objectCreate = Object.create || objectCreatePolyfill -var objectKeys = Object.keys || objectKeysPolyfill -var bind = Function.prototype.bind || functionBindPolyfill - -function EventEmitter() { - if (!this._events || !Object.prototype.hasOwnProperty.call(this, '_events')) { - this._events = objectCreate(null); - this._eventsCount = 0; - } - - this._maxListeners = this._maxListeners || undefined; -} -module.exports = EventEmitter; - -// Backwards-compat with node 0.10.x -EventEmitter.EventEmitter = EventEmitter; - -EventEmitter.prototype._events = undefined; -EventEmitter.prototype._maxListeners = undefined; - -// By default EventEmitters will print a warning if more than 10 listeners are -// added to it. This is a useful default which helps finding memory leaks. -var defaultMaxListeners = 10; - -var hasDefineProperty; -try { - var o = {}; - if (Object.defineProperty) Object.defineProperty(o, 'x', { value: 0 }); - hasDefineProperty = o.x === 0; -} catch (err) { hasDefineProperty = false } -if (hasDefineProperty) { - Object.defineProperty(EventEmitter, 'defaultMaxListeners', { - enumerable: true, - get: function() { - return defaultMaxListeners; - }, - set: function(arg) { - // check whether the input is a positive number (whose value is zero or - // greater and not a NaN). - if (typeof arg !== 'number' || arg < 0 || arg !== arg) - throw new TypeError('"defaultMaxListeners" must be a positive number'); - defaultMaxListeners = arg; - } - }); -} else { - EventEmitter.defaultMaxListeners = defaultMaxListeners; -} - -// Obviously not all Emitters should be limited to 10. This function allows -// that to be increased. Set to zero for unlimited. -EventEmitter.prototype.setMaxListeners = function setMaxListeners(n) { - if (typeof n !== 'number' || n < 0 || isNaN(n)) - throw new TypeError('"n" argument must be a positive number'); - this._maxListeners = n; - return this; -}; - -function $getMaxListeners(that) { - if (that._maxListeners === undefined) - return EventEmitter.defaultMaxListeners; - return that._maxListeners; -} - -EventEmitter.prototype.getMaxListeners = function getMaxListeners() { - return $getMaxListeners(this); -}; - -// These standalone emit* functions are used to optimize calling of event -// handlers for fast cases because emit() itself often has a variable number of -// arguments and can be deoptimized because of that. These functions always have -// the same number of arguments and thus do not get deoptimized, so the code -// inside them can execute faster. -function emitNone(handler, isFn, self) { - if (isFn) - handler.call(self); - else { - var len = handler.length; - var listeners = arrayClone(handler, len); - for (var i = 0; i < len; ++i) - listeners[i].call(self); - } -} -function emitOne(handler, isFn, self, arg1) { - if (isFn) - handler.call(self, arg1); - else { - var len = handler.length; - var listeners = arrayClone(handler, len); - for (var i = 0; i < len; ++i) - listeners[i].call(self, arg1); - } -} -function emitTwo(handler, isFn, self, arg1, arg2) { - if (isFn) - handler.call(self, arg1, arg2); - else { - var len = handler.length; - var listeners = arrayClone(handler, len); - for (var i = 0; i < len; ++i) - listeners[i].call(self, arg1, arg2); - } -} -function emitThree(handler, isFn, self, arg1, arg2, arg3) { - if (isFn) - handler.call(self, arg1, arg2, arg3); - else { - var len = handler.length; - var listeners = arrayClone(handler, len); - for (var i = 0; i < len; ++i) - listeners[i].call(self, arg1, arg2, arg3); - } -} - -function emitMany(handler, isFn, self, args) { - if (isFn) - handler.apply(self, args); - else { - var len = handler.length; - var listeners = arrayClone(handler, len); - for (var i = 0; i < len; ++i) - listeners[i].apply(self, args); - } -} - -EventEmitter.prototype.emit = function emit(type) { - var er, handler, len, args, i, events; - var doError = (type === 'error'); - - events = this._events; - if (events) - doError = (doError && events.error == null); - else if (!doError) - return false; - - // If there is no 'error' event listener then throw. - if (doError) { - if (arguments.length > 1) - er = arguments[1]; - if (er instanceof Error) { - throw er; // Unhandled 'error' event - } else { - // At least give some kind of context to the user - var err = new Error('Unhandled "error" event. (' + er + ')'); - err.context = er; - throw err; - } - return false; - } - - handler = events[type]; - - if (!handler) - return false; - - var isFn = typeof handler === 'function'; - len = arguments.length; - switch (len) { - // fast cases - case 1: - emitNone(handler, isFn, this); - break; - case 2: - emitOne(handler, isFn, this, arguments[1]); - break; - case 3: - emitTwo(handler, isFn, this, arguments[1], arguments[2]); - break; - case 4: - emitThree(handler, isFn, this, arguments[1], arguments[2], arguments[3]); - break; - // slower - default: - args = new Array(len - 1); - for (i = 1; i < len; i++) - args[i - 1] = arguments[i]; - emitMany(handler, isFn, this, args); - } - - return true; -}; - -function _addListener(target, type, listener, prepend) { - var m; - var events; - var existing; - - if (typeof listener !== 'function') - throw new TypeError('"listener" argument must be a function'); - - events = target._events; - if (!events) { - events = target._events = objectCreate(null); - target._eventsCount = 0; - } else { - // To avoid recursion in the case that type === "newListener"! Before - // adding it to the listeners, first emit "newListener". - if (events.newListener) { - target.emit('newListener', type, - listener.listener ? listener.listener : listener); - - // Re-assign `events` because a newListener handler could have caused the - // this._events to be assigned to a new object - events = target._events; - } - existing = events[type]; - } - - if (!existing) { - // Optimize the case of one listener. Don't need the extra array object. - existing = events[type] = listener; - ++target._eventsCount; - } else { - if (typeof existing === 'function') { - // Adding the second element, need to change to array. - existing = events[type] = - prepend ? [listener, existing] : [existing, listener]; - } else { - // If we've already got an array, just append. - if (prepend) { - existing.unshift(listener); - } else { - existing.push(listener); - } - } - - // Check for listener leak - if (!existing.warned) { - m = $getMaxListeners(target); - if (m && m > 0 && existing.length > m) { - existing.warned = true; - var w = new Error('Possible EventEmitter memory leak detected. ' + - existing.length + ' "' + String(type) + '" listeners ' + - 'added. Use emitter.setMaxListeners() to ' + - 'increase limit.'); - w.name = 'MaxListenersExceededWarning'; - w.emitter = target; - w.type = type; - w.count = existing.length; - if (typeof console === 'object' && console.warn) { - console.warn('%s: %s', w.name, w.message); - } - } - } - } - - return target; -} - -EventEmitter.prototype.addListener = function addListener(type, listener) { - return _addListener(this, type, listener, false); -}; - -EventEmitter.prototype.on = EventEmitter.prototype.addListener; - -EventEmitter.prototype.prependListener = - function prependListener(type, listener) { - return _addListener(this, type, listener, true); - }; - -function onceWrapper() { - if (!this.fired) { - this.target.removeListener(this.type, this.wrapFn); - this.fired = true; - switch (arguments.length) { - case 0: - return this.listener.call(this.target); - case 1: - return this.listener.call(this.target, arguments[0]); - case 2: - return this.listener.call(this.target, arguments[0], arguments[1]); - case 3: - return this.listener.call(this.target, arguments[0], arguments[1], - arguments[2]); - default: - var args = new Array(arguments.length); - for (var i = 0; i < args.length; ++i) - args[i] = arguments[i]; - this.listener.apply(this.target, args); - } - } -} - -function _onceWrap(target, type, listener) { - var state = { fired: false, wrapFn: undefined, target: target, type: type, listener: listener }; - var wrapped = bind.call(onceWrapper, state); - wrapped.listener = listener; - state.wrapFn = wrapped; - return wrapped; -} - -EventEmitter.prototype.once = function once(type, listener) { - if (typeof listener !== 'function') - throw new TypeError('"listener" argument must be a function'); - this.on(type, _onceWrap(this, type, listener)); - return this; -}; - -EventEmitter.prototype.prependOnceListener = - function prependOnceListener(type, listener) { - if (typeof listener !== 'function') - throw new TypeError('"listener" argument must be a function'); - this.prependListener(type, _onceWrap(this, type, listener)); - return this; - }; - -// Emits a 'removeListener' event if and only if the listener was removed. -EventEmitter.prototype.removeListener = - function removeListener(type, listener) { - var list, events, position, i, originalListener; - - if (typeof listener !== 'function') - throw new TypeError('"listener" argument must be a function'); - - events = this._events; - if (!events) - return this; - - list = events[type]; - if (!list) - return this; - - if (list === listener || list.listener === listener) { - if (--this._eventsCount === 0) - this._events = objectCreate(null); - else { - delete events[type]; - if (events.removeListener) - this.emit('removeListener', type, list.listener || listener); - } - } else if (typeof list !== 'function') { - position = -1; - - for (i = list.length - 1; i >= 0; i--) { - if (list[i] === listener || list[i].listener === listener) { - originalListener = list[i].listener; - position = i; - break; - } - } - - if (position < 0) - return this; - - if (position === 0) - list.shift(); - else - spliceOne(list, position); - - if (list.length === 1) - events[type] = list[0]; - - if (events.removeListener) - this.emit('removeListener', type, originalListener || listener); - } - - return this; - }; - -EventEmitter.prototype.removeAllListeners = - function removeAllListeners(type) { - var listeners, events, i; - - events = this._events; - if (!events) - return this; + // TODO(indutny): it may be reasonable to omit it for users who don't need + // to work with 256-bit numbers, otherwise it gives 20% improvement for 256-bit + // multiplication (like elliptic secp256k1). + var comb10MulTo = function comb10MulTo (self, num, out) { + var a = self.words; + var b = num.words; + var o = out.words; + var c = 0; + var lo; + var mid; + var hi; + var a0 = a[0] | 0; + var al0 = a0 & 0x1fff; + var ah0 = a0 >>> 13; + var a1 = a[1] | 0; + var al1 = a1 & 0x1fff; + var ah1 = a1 >>> 13; + var a2 = a[2] | 0; + var al2 = a2 & 0x1fff; + var ah2 = a2 >>> 13; + var a3 = a[3] | 0; + var al3 = a3 & 0x1fff; + var ah3 = a3 >>> 13; + var a4 = a[4] | 0; + var al4 = a4 & 0x1fff; + var ah4 = a4 >>> 13; + var a5 = a[5] | 0; + var al5 = a5 & 0x1fff; + var ah5 = a5 >>> 13; + var a6 = a[6] | 0; + var al6 = a6 & 0x1fff; + var ah6 = a6 >>> 13; + var a7 = a[7] | 0; + var al7 = a7 & 0x1fff; + var ah7 = a7 >>> 13; + var a8 = a[8] | 0; + var al8 = a8 & 0x1fff; + var ah8 = a8 >>> 13; + var a9 = a[9] | 0; + var al9 = a9 & 0x1fff; + var ah9 = a9 >>> 13; + var b0 = b[0] | 0; + var bl0 = b0 & 0x1fff; + var bh0 = b0 >>> 13; + var b1 = b[1] | 0; + var bl1 = b1 & 0x1fff; + var bh1 = b1 >>> 13; + var b2 = b[2] | 0; + var bl2 = b2 & 0x1fff; + var bh2 = b2 >>> 13; + var b3 = b[3] | 0; + var bl3 = b3 & 0x1fff; + var bh3 = b3 >>> 13; + var b4 = b[4] | 0; + var bl4 = b4 & 0x1fff; + var bh4 = b4 >>> 13; + var b5 = b[5] | 0; + var bl5 = b5 & 0x1fff; + var bh5 = b5 >>> 13; + var b6 = b[6] | 0; + var bl6 = b6 & 0x1fff; + var bh6 = b6 >>> 13; + var b7 = b[7] | 0; + var bl7 = b7 & 0x1fff; + var bh7 = b7 >>> 13; + var b8 = b[8] | 0; + var bl8 = b8 & 0x1fff; + var bh8 = b8 >>> 13; + var b9 = b[9] | 0; + var bl9 = b9 & 0x1fff; + var bh9 = b9 >>> 13; - // not listening for removeListener, no need to emit - if (!events.removeListener) { - if (arguments.length === 0) { - this._events = objectCreate(null); - this._eventsCount = 0; - } else if (events[type]) { - if (--this._eventsCount === 0) - this._events = objectCreate(null); - else - delete events[type]; - } - return this; - } + out.negative = self.negative ^ num.negative; + out.length = 19; + /* k = 0 */ + lo = Math.imul(al0, bl0); + mid = Math.imul(al0, bh0); + mid = (mid + Math.imul(ah0, bl0)) | 0; + hi = Math.imul(ah0, bh0); + var w0 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0; + c = (((hi + (mid >>> 13)) | 0) + (w0 >>> 26)) | 0; + w0 &= 0x3ffffff; + /* k = 1 */ + lo = Math.imul(al1, bl0); + mid = Math.imul(al1, bh0); + mid = (mid + Math.imul(ah1, bl0)) | 0; + hi = Math.imul(ah1, bh0); + lo = (lo + Math.imul(al0, bl1)) | 0; + mid = (mid + Math.imul(al0, bh1)) | 0; + mid = (mid + Math.imul(ah0, bl1)) | 0; + hi = (hi + Math.imul(ah0, bh1)) | 0; + var w1 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0; + c = (((hi + (mid >>> 13)) | 0) + (w1 >>> 26)) | 0; + w1 &= 0x3ffffff; + /* k = 2 */ + lo = Math.imul(al2, bl0); + mid = Math.imul(al2, bh0); + mid = (mid + Math.imul(ah2, bl0)) | 0; + hi = Math.imul(ah2, bh0); + lo = (lo + Math.imul(al1, bl1)) | 0; + mid = (mid + Math.imul(al1, bh1)) | 0; + mid = (mid + Math.imul(ah1, bl1)) | 0; + hi = (hi + Math.imul(ah1, bh1)) | 0; + lo = (lo + Math.imul(al0, bl2)) | 0; + mid = (mid + Math.imul(al0, bh2)) | 0; + mid = (mid + Math.imul(ah0, bl2)) | 0; + hi = (hi + Math.imul(ah0, bh2)) | 0; + var w2 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0; + c = (((hi + (mid >>> 13)) | 0) + (w2 >>> 26)) | 0; + w2 &= 0x3ffffff; + /* k = 3 */ + lo = Math.imul(al3, bl0); + mid = Math.imul(al3, bh0); + mid = (mid + Math.imul(ah3, bl0)) | 0; + hi = Math.imul(ah3, bh0); + lo = (lo + Math.imul(al2, bl1)) | 0; + mid = (mid + Math.imul(al2, bh1)) | 0; + mid = (mid + Math.imul(ah2, bl1)) | 0; + hi = (hi + Math.imul(ah2, bh1)) | 0; + lo = (lo + Math.imul(al1, bl2)) | 0; + mid = (mid + Math.imul(al1, bh2)) | 0; + mid = (mid + Math.imul(ah1, bl2)) | 0; + hi = (hi + Math.imul(ah1, bh2)) | 0; + lo = (lo + Math.imul(al0, bl3)) | 0; + mid = (mid + Math.imul(al0, bh3)) | 0; + mid = (mid + Math.imul(ah0, bl3)) | 0; + hi = (hi + Math.imul(ah0, bh3)) | 0; + var w3 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0; + c = (((hi + (mid >>> 13)) | 0) + (w3 >>> 26)) | 0; + w3 &= 0x3ffffff; + /* k = 4 */ + lo = Math.imul(al4, bl0); + mid = Math.imul(al4, bh0); + mid = (mid + Math.imul(ah4, bl0)) | 0; + hi = Math.imul(ah4, bh0); + lo = (lo + Math.imul(al3, bl1)) | 0; + mid = (mid + Math.imul(al3, bh1)) | 0; + mid = (mid + Math.imul(ah3, bl1)) | 0; + hi = (hi + Math.imul(ah3, bh1)) | 0; + lo = (lo + Math.imul(al2, bl2)) | 0; + mid = (mid + Math.imul(al2, bh2)) | 0; + mid = (mid + Math.imul(ah2, bl2)) | 0; + hi = (hi + Math.imul(ah2, bh2)) | 0; + lo = (lo + Math.imul(al1, bl3)) | 0; + mid = (mid + Math.imul(al1, bh3)) | 0; + mid = (mid + Math.imul(ah1, bl3)) | 0; + hi = (hi + Math.imul(ah1, bh3)) | 0; + lo = (lo + Math.imul(al0, bl4)) | 0; + mid = (mid + Math.imul(al0, bh4)) | 0; + mid = (mid + Math.imul(ah0, bl4)) | 0; + hi = (hi + Math.imul(ah0, bh4)) | 0; + var w4 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0; + c = (((hi + (mid >>> 13)) | 0) + (w4 >>> 26)) | 0; + w4 &= 0x3ffffff; + /* k = 5 */ + lo = Math.imul(al5, bl0); + mid = Math.imul(al5, bh0); + mid = (mid + Math.imul(ah5, bl0)) | 0; + hi = Math.imul(ah5, bh0); + lo = (lo + Math.imul(al4, bl1)) | 0; + mid = (mid + Math.imul(al4, bh1)) | 0; + mid = (mid + Math.imul(ah4, bl1)) | 0; + hi = (hi + Math.imul(ah4, bh1)) | 0; + lo = (lo + Math.imul(al3, bl2)) | 0; + mid = (mid + Math.imul(al3, bh2)) | 0; + mid = (mid + Math.imul(ah3, bl2)) | 0; + hi = (hi + Math.imul(ah3, bh2)) | 0; + lo = (lo + Math.imul(al2, bl3)) | 0; + mid = (mid + Math.imul(al2, bh3)) | 0; + mid = (mid + Math.imul(ah2, bl3)) | 0; + hi = (hi + Math.imul(ah2, bh3)) | 0; + lo = (lo + Math.imul(al1, bl4)) | 0; + mid = (mid + Math.imul(al1, bh4)) | 0; + mid = (mid + Math.imul(ah1, bl4)) | 0; + hi = (hi + Math.imul(ah1, bh4)) | 0; + lo = (lo + Math.imul(al0, bl5)) | 0; + mid = (mid + Math.imul(al0, bh5)) | 0; + mid = (mid + Math.imul(ah0, bl5)) | 0; + hi = (hi + Math.imul(ah0, bh5)) | 0; + var w5 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0; + c = (((hi + (mid >>> 13)) | 0) + (w5 >>> 26)) | 0; + w5 &= 0x3ffffff; + /* k = 6 */ + lo = Math.imul(al6, bl0); + mid = Math.imul(al6, bh0); + mid = (mid + Math.imul(ah6, bl0)) | 0; + hi = Math.imul(ah6, bh0); + lo = (lo + Math.imul(al5, bl1)) | 0; + mid = (mid + Math.imul(al5, bh1)) | 0; + mid = (mid + Math.imul(ah5, bl1)) | 0; + hi = (hi + Math.imul(ah5, bh1)) | 0; + lo = (lo + Math.imul(al4, bl2)) | 0; + mid = (mid + Math.imul(al4, bh2)) | 0; + mid = (mid + Math.imul(ah4, bl2)) | 0; + hi = (hi + Math.imul(ah4, bh2)) | 0; + lo = (lo + Math.imul(al3, bl3)) | 0; + mid = (mid + Math.imul(al3, bh3)) | 0; + mid = (mid + Math.imul(ah3, bl3)) | 0; + hi = (hi + Math.imul(ah3, bh3)) | 0; + lo = (lo + Math.imul(al2, bl4)) | 0; + mid = (mid + Math.imul(al2, bh4)) | 0; + mid = (mid + Math.imul(ah2, bl4)) | 0; + hi = (hi + Math.imul(ah2, bh4)) | 0; + lo = (lo + Math.imul(al1, bl5)) | 0; + mid = (mid + Math.imul(al1, bh5)) | 0; + mid = (mid + Math.imul(ah1, bl5)) | 0; + hi = (hi + Math.imul(ah1, bh5)) | 0; + lo = (lo + Math.imul(al0, bl6)) | 0; + mid = (mid + Math.imul(al0, bh6)) | 0; + mid = (mid + Math.imul(ah0, bl6)) | 0; + hi = (hi + Math.imul(ah0, bh6)) | 0; + var w6 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0; + c = (((hi + (mid >>> 13)) | 0) + (w6 >>> 26)) | 0; + w6 &= 0x3ffffff; + /* k = 7 */ + lo = Math.imul(al7, bl0); + mid = Math.imul(al7, bh0); + mid = (mid + Math.imul(ah7, bl0)) | 0; + hi = Math.imul(ah7, bh0); + lo = (lo + Math.imul(al6, bl1)) | 0; + mid = (mid + Math.imul(al6, bh1)) | 0; + mid = (mid + Math.imul(ah6, bl1)) | 0; + hi = (hi + Math.imul(ah6, bh1)) | 0; + lo = (lo + Math.imul(al5, bl2)) | 0; + mid = (mid + Math.imul(al5, bh2)) | 0; + mid = (mid + Math.imul(ah5, bl2)) | 0; + hi = (hi + Math.imul(ah5, bh2)) | 0; + lo = (lo + Math.imul(al4, bl3)) | 0; + mid = (mid + Math.imul(al4, bh3)) | 0; + mid = (mid + Math.imul(ah4, bl3)) | 0; + hi = (hi + Math.imul(ah4, bh3)) | 0; + lo = (lo + Math.imul(al3, bl4)) | 0; + mid = (mid + Math.imul(al3, bh4)) | 0; + mid = (mid + Math.imul(ah3, bl4)) | 0; + hi = (hi + Math.imul(ah3, bh4)) | 0; + lo = (lo + Math.imul(al2, bl5)) | 0; + mid = (mid + Math.imul(al2, bh5)) | 0; + mid = (mid + Math.imul(ah2, bl5)) | 0; + hi = (hi + Math.imul(ah2, bh5)) | 0; + lo = (lo + Math.imul(al1, bl6)) | 0; + mid = (mid + Math.imul(al1, bh6)) | 0; + mid = (mid + Math.imul(ah1, bl6)) | 0; + hi = (hi + Math.imul(ah1, bh6)) | 0; + lo = (lo + Math.imul(al0, bl7)) | 0; + mid = (mid + Math.imul(al0, bh7)) | 0; + mid = (mid + Math.imul(ah0, bl7)) | 0; + hi = (hi + Math.imul(ah0, bh7)) | 0; + var w7 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0; + c = (((hi + (mid >>> 13)) | 0) + (w7 >>> 26)) | 0; + w7 &= 0x3ffffff; + /* k = 8 */ + lo = Math.imul(al8, bl0); + mid = Math.imul(al8, bh0); + mid = (mid + Math.imul(ah8, bl0)) | 0; + hi = Math.imul(ah8, bh0); + lo = (lo + Math.imul(al7, bl1)) | 0; + mid = (mid + Math.imul(al7, bh1)) | 0; + mid = (mid + Math.imul(ah7, bl1)) | 0; + hi = (hi + Math.imul(ah7, bh1)) | 0; + lo = (lo + Math.imul(al6, bl2)) | 0; + mid = (mid + Math.imul(al6, bh2)) | 0; + mid = (mid + Math.imul(ah6, bl2)) | 0; + hi = (hi + Math.imul(ah6, bh2)) | 0; + lo = (lo + Math.imul(al5, bl3)) | 0; + mid = (mid + Math.imul(al5, bh3)) | 0; + mid = (mid + Math.imul(ah5, bl3)) | 0; + hi = (hi + Math.imul(ah5, bh3)) | 0; + lo = (lo + Math.imul(al4, bl4)) | 0; + mid = (mid + Math.imul(al4, bh4)) | 0; + mid = (mid + Math.imul(ah4, bl4)) | 0; + hi = (hi + Math.imul(ah4, bh4)) | 0; + lo = (lo + Math.imul(al3, bl5)) | 0; + mid = (mid + Math.imul(al3, bh5)) | 0; + mid = (mid + Math.imul(ah3, bl5)) | 0; + hi = (hi + Math.imul(ah3, bh5)) | 0; + lo = (lo + Math.imul(al2, bl6)) | 0; + mid = (mid + Math.imul(al2, bh6)) | 0; + mid = (mid + Math.imul(ah2, bl6)) | 0; + hi = (hi + Math.imul(ah2, bh6)) | 0; + lo = (lo + Math.imul(al1, bl7)) | 0; + mid = (mid + Math.imul(al1, bh7)) | 0; + mid = (mid + Math.imul(ah1, bl7)) | 0; + hi = (hi + Math.imul(ah1, bh7)) | 0; + lo = (lo + Math.imul(al0, bl8)) | 0; + mid = (mid + Math.imul(al0, bh8)) | 0; + mid = (mid + Math.imul(ah0, bl8)) | 0; + hi = (hi + Math.imul(ah0, bh8)) | 0; + var w8 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0; + c = (((hi + (mid >>> 13)) | 0) + (w8 >>> 26)) | 0; + w8 &= 0x3ffffff; + /* k = 9 */ + lo = Math.imul(al9, bl0); + mid = Math.imul(al9, bh0); + mid = (mid + Math.imul(ah9, bl0)) | 0; + hi = Math.imul(ah9, bh0); + lo = (lo + Math.imul(al8, bl1)) | 0; + mid = (mid + Math.imul(al8, bh1)) | 0; + mid = (mid + Math.imul(ah8, bl1)) | 0; + hi = (hi + Math.imul(ah8, bh1)) | 0; + lo = (lo + Math.imul(al7, bl2)) | 0; + mid = (mid + Math.imul(al7, bh2)) | 0; + mid = (mid + Math.imul(ah7, bl2)) | 0; + hi = (hi + Math.imul(ah7, bh2)) | 0; + lo = (lo + Math.imul(al6, bl3)) | 0; + mid = (mid + Math.imul(al6, bh3)) | 0; + mid = (mid + Math.imul(ah6, bl3)) | 0; + hi = (hi + Math.imul(ah6, bh3)) | 0; + lo = (lo + Math.imul(al5, bl4)) | 0; + mid = (mid + Math.imul(al5, bh4)) | 0; + mid = (mid + Math.imul(ah5, bl4)) | 0; + hi = (hi + Math.imul(ah5, bh4)) | 0; + lo = (lo + Math.imul(al4, bl5)) | 0; + mid = (mid + Math.imul(al4, bh5)) | 0; + mid = (mid + Math.imul(ah4, bl5)) | 0; + hi = (hi + Math.imul(ah4, bh5)) | 0; + lo = (lo + Math.imul(al3, bl6)) | 0; + mid = (mid + Math.imul(al3, bh6)) | 0; + mid = (mid + Math.imul(ah3, bl6)) | 0; + hi = (hi + Math.imul(ah3, bh6)) | 0; + lo = (lo + Math.imul(al2, bl7)) | 0; + mid = (mid + Math.imul(al2, bh7)) | 0; + mid = (mid + Math.imul(ah2, bl7)) | 0; + hi = (hi + Math.imul(ah2, bh7)) | 0; + lo = (lo + Math.imul(al1, bl8)) | 0; + mid = (mid + Math.imul(al1, bh8)) | 0; + mid = (mid + Math.imul(ah1, bl8)) | 0; + hi = (hi + Math.imul(ah1, bh8)) | 0; + lo = (lo + Math.imul(al0, bl9)) | 0; + mid = (mid + Math.imul(al0, bh9)) | 0; + mid = (mid + Math.imul(ah0, bl9)) | 0; + hi = (hi + Math.imul(ah0, bh9)) | 0; + var w9 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0; + c = (((hi + (mid >>> 13)) | 0) + (w9 >>> 26)) | 0; + w9 &= 0x3ffffff; + /* k = 10 */ + lo = Math.imul(al9, bl1); + mid = Math.imul(al9, bh1); + mid = (mid + Math.imul(ah9, bl1)) | 0; + hi = Math.imul(ah9, bh1); + lo = (lo + Math.imul(al8, bl2)) | 0; + mid = (mid + Math.imul(al8, bh2)) | 0; + mid = (mid + Math.imul(ah8, bl2)) | 0; + hi = (hi + Math.imul(ah8, bh2)) | 0; + lo = (lo + Math.imul(al7, bl3)) | 0; + mid = (mid + Math.imul(al7, bh3)) | 0; + mid = (mid + Math.imul(ah7, bl3)) | 0; + hi = (hi + Math.imul(ah7, bh3)) | 0; + lo = (lo + Math.imul(al6, bl4)) | 0; + mid = (mid + Math.imul(al6, bh4)) | 0; + mid = (mid + Math.imul(ah6, bl4)) | 0; + hi = (hi + Math.imul(ah6, bh4)) | 0; + lo = (lo + Math.imul(al5, bl5)) | 0; + mid = (mid + Math.imul(al5, bh5)) | 0; + mid = (mid + Math.imul(ah5, bl5)) | 0; + hi = (hi + Math.imul(ah5, bh5)) | 0; + lo = (lo + Math.imul(al4, bl6)) | 0; + mid = (mid + Math.imul(al4, bh6)) | 0; + mid = (mid + Math.imul(ah4, bl6)) | 0; + hi = (hi + Math.imul(ah4, bh6)) | 0; + lo = (lo + Math.imul(al3, bl7)) | 0; + mid = (mid + Math.imul(al3, bh7)) | 0; + mid = (mid + Math.imul(ah3, bl7)) | 0; + hi = (hi + Math.imul(ah3, bh7)) | 0; + lo = (lo + Math.imul(al2, bl8)) | 0; + mid = (mid + Math.imul(al2, bh8)) | 0; + mid = (mid + Math.imul(ah2, bl8)) | 0; + hi = (hi + Math.imul(ah2, bh8)) | 0; + lo = (lo + Math.imul(al1, bl9)) | 0; + mid = (mid + Math.imul(al1, bh9)) | 0; + mid = (mid + Math.imul(ah1, bl9)) | 0; + hi = (hi + Math.imul(ah1, bh9)) | 0; + var w10 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0; + c = (((hi + (mid >>> 13)) | 0) + (w10 >>> 26)) | 0; + w10 &= 0x3ffffff; + /* k = 11 */ + lo = Math.imul(al9, bl2); + mid = Math.imul(al9, bh2); + mid = (mid + Math.imul(ah9, bl2)) | 0; + hi = Math.imul(ah9, bh2); + lo = (lo + Math.imul(al8, bl3)) | 0; + mid = (mid + Math.imul(al8, bh3)) | 0; + mid = (mid + Math.imul(ah8, bl3)) | 0; + hi = (hi + Math.imul(ah8, bh3)) | 0; + lo = (lo + Math.imul(al7, bl4)) | 0; + mid = (mid + Math.imul(al7, bh4)) | 0; + mid = (mid + Math.imul(ah7, bl4)) | 0; + hi = (hi + Math.imul(ah7, bh4)) | 0; + lo = (lo + Math.imul(al6, bl5)) | 0; + mid = (mid + Math.imul(al6, bh5)) | 0; + mid = (mid + Math.imul(ah6, bl5)) | 0; + hi = (hi + Math.imul(ah6, bh5)) | 0; + lo = (lo + Math.imul(al5, bl6)) | 0; + mid = (mid + Math.imul(al5, bh6)) | 0; + mid = (mid + Math.imul(ah5, bl6)) | 0; + hi = (hi + Math.imul(ah5, bh6)) | 0; + lo = (lo + Math.imul(al4, bl7)) | 0; + mid = (mid + Math.imul(al4, bh7)) | 0; + mid = (mid + Math.imul(ah4, bl7)) | 0; + hi = (hi + Math.imul(ah4, bh7)) | 0; + lo = (lo + Math.imul(al3, bl8)) | 0; + mid = (mid + Math.imul(al3, bh8)) | 0; + mid = (mid + Math.imul(ah3, bl8)) | 0; + hi = (hi + Math.imul(ah3, bh8)) | 0; + lo = (lo + Math.imul(al2, bl9)) | 0; + mid = (mid + Math.imul(al2, bh9)) | 0; + mid = (mid + Math.imul(ah2, bl9)) | 0; + hi = (hi + Math.imul(ah2, bh9)) | 0; + var w11 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0; + c = (((hi + (mid >>> 13)) | 0) + (w11 >>> 26)) | 0; + w11 &= 0x3ffffff; + /* k = 12 */ + lo = Math.imul(al9, bl3); + mid = Math.imul(al9, bh3); + mid = (mid + Math.imul(ah9, bl3)) | 0; + hi = Math.imul(ah9, bh3); + lo = (lo + Math.imul(al8, bl4)) | 0; + mid = (mid + Math.imul(al8, bh4)) | 0; + mid = (mid + Math.imul(ah8, bl4)) | 0; + hi = (hi + Math.imul(ah8, bh4)) | 0; + lo = (lo + Math.imul(al7, bl5)) | 0; + mid = (mid + Math.imul(al7, bh5)) | 0; + mid = (mid + Math.imul(ah7, bl5)) | 0; + hi = (hi + Math.imul(ah7, bh5)) | 0; + lo = (lo + Math.imul(al6, bl6)) | 0; + mid = (mid + Math.imul(al6, bh6)) | 0; + mid = (mid + Math.imul(ah6, bl6)) | 0; + hi = (hi + Math.imul(ah6, bh6)) | 0; + lo = (lo + Math.imul(al5, bl7)) | 0; + mid = (mid + Math.imul(al5, bh7)) | 0; + mid = (mid + Math.imul(ah5, bl7)) | 0; + hi = (hi + Math.imul(ah5, bh7)) | 0; + lo = (lo + Math.imul(al4, bl8)) | 0; + mid = (mid + Math.imul(al4, bh8)) | 0; + mid = (mid + Math.imul(ah4, bl8)) | 0; + hi = (hi + Math.imul(ah4, bh8)) | 0; + lo = (lo + Math.imul(al3, bl9)) | 0; + mid = (mid + Math.imul(al3, bh9)) | 0; + mid = (mid + Math.imul(ah3, bl9)) | 0; + hi = (hi + Math.imul(ah3, bh9)) | 0; + var w12 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0; + c = (((hi + (mid >>> 13)) | 0) + (w12 >>> 26)) | 0; + w12 &= 0x3ffffff; + /* k = 13 */ + lo = Math.imul(al9, bl4); + mid = Math.imul(al9, bh4); + mid = (mid + Math.imul(ah9, bl4)) | 0; + hi = Math.imul(ah9, bh4); + lo = (lo + Math.imul(al8, bl5)) | 0; + mid = (mid + Math.imul(al8, bh5)) | 0; + mid = (mid + Math.imul(ah8, bl5)) | 0; + hi = (hi + Math.imul(ah8, bh5)) | 0; + lo = (lo + Math.imul(al7, bl6)) | 0; + mid = (mid + Math.imul(al7, bh6)) | 0; + mid = (mid + Math.imul(ah7, bl6)) | 0; + hi = (hi + Math.imul(ah7, bh6)) | 0; + lo = (lo + Math.imul(al6, bl7)) | 0; + mid = (mid + Math.imul(al6, bh7)) | 0; + mid = (mid + Math.imul(ah6, bl7)) | 0; + hi = (hi + Math.imul(ah6, bh7)) | 0; + lo = (lo + Math.imul(al5, bl8)) | 0; + mid = (mid + Math.imul(al5, bh8)) | 0; + mid = (mid + Math.imul(ah5, bl8)) | 0; + hi = (hi + Math.imul(ah5, bh8)) | 0; + lo = (lo + Math.imul(al4, bl9)) | 0; + mid = (mid + Math.imul(al4, bh9)) | 0; + mid = (mid + Math.imul(ah4, bl9)) | 0; + hi = (hi + Math.imul(ah4, bh9)) | 0; + var w13 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0; + c = (((hi + (mid >>> 13)) | 0) + (w13 >>> 26)) | 0; + w13 &= 0x3ffffff; + /* k = 14 */ + lo = Math.imul(al9, bl5); + mid = Math.imul(al9, bh5); + mid = (mid + Math.imul(ah9, bl5)) | 0; + hi = Math.imul(ah9, bh5); + lo = (lo + Math.imul(al8, bl6)) | 0; + mid = (mid + Math.imul(al8, bh6)) | 0; + mid = (mid + Math.imul(ah8, bl6)) | 0; + hi = (hi + Math.imul(ah8, bh6)) | 0; + lo = (lo + Math.imul(al7, bl7)) | 0; + mid = (mid + Math.imul(al7, bh7)) | 0; + mid = (mid + Math.imul(ah7, bl7)) | 0; + hi = (hi + Math.imul(ah7, bh7)) | 0; + lo = (lo + Math.imul(al6, bl8)) | 0; + mid = (mid + Math.imul(al6, bh8)) | 0; + mid = (mid + Math.imul(ah6, bl8)) | 0; + hi = (hi + Math.imul(ah6, bh8)) | 0; + lo = (lo + Math.imul(al5, bl9)) | 0; + mid = (mid + Math.imul(al5, bh9)) | 0; + mid = (mid + Math.imul(ah5, bl9)) | 0; + hi = (hi + Math.imul(ah5, bh9)) | 0; + var w14 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0; + c = (((hi + (mid >>> 13)) | 0) + (w14 >>> 26)) | 0; + w14 &= 0x3ffffff; + /* k = 15 */ + lo = Math.imul(al9, bl6); + mid = Math.imul(al9, bh6); + mid = (mid + Math.imul(ah9, bl6)) | 0; + hi = Math.imul(ah9, bh6); + lo = (lo + Math.imul(al8, bl7)) | 0; + mid = (mid + Math.imul(al8, bh7)) | 0; + mid = (mid + Math.imul(ah8, bl7)) | 0; + hi = (hi + Math.imul(ah8, bh7)) | 0; + lo = (lo + Math.imul(al7, bl8)) | 0; + mid = (mid + Math.imul(al7, bh8)) | 0; + mid = (mid + Math.imul(ah7, bl8)) | 0; + hi = (hi + Math.imul(ah7, bh8)) | 0; + lo = (lo + Math.imul(al6, bl9)) | 0; + mid = (mid + Math.imul(al6, bh9)) | 0; + mid = (mid + Math.imul(ah6, bl9)) | 0; + hi = (hi + Math.imul(ah6, bh9)) | 0; + var w15 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0; + c = (((hi + (mid >>> 13)) | 0) + (w15 >>> 26)) | 0; + w15 &= 0x3ffffff; + /* k = 16 */ + lo = Math.imul(al9, bl7); + mid = Math.imul(al9, bh7); + mid = (mid + Math.imul(ah9, bl7)) | 0; + hi = Math.imul(ah9, bh7); + lo = (lo + Math.imul(al8, bl8)) | 0; + mid = (mid + Math.imul(al8, bh8)) | 0; + mid = (mid + Math.imul(ah8, bl8)) | 0; + hi = (hi + Math.imul(ah8, bh8)) | 0; + lo = (lo + Math.imul(al7, bl9)) | 0; + mid = (mid + Math.imul(al7, bh9)) | 0; + mid = (mid + Math.imul(ah7, bl9)) | 0; + hi = (hi + Math.imul(ah7, bh9)) | 0; + var w16 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0; + c = (((hi + (mid >>> 13)) | 0) + (w16 >>> 26)) | 0; + w16 &= 0x3ffffff; + /* k = 17 */ + lo = Math.imul(al9, bl8); + mid = Math.imul(al9, bh8); + mid = (mid + Math.imul(ah9, bl8)) | 0; + hi = Math.imul(ah9, bh8); + lo = (lo + Math.imul(al8, bl9)) | 0; + mid = (mid + Math.imul(al8, bh9)) | 0; + mid = (mid + Math.imul(ah8, bl9)) | 0; + hi = (hi + Math.imul(ah8, bh9)) | 0; + var w17 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0; + c = (((hi + (mid >>> 13)) | 0) + (w17 >>> 26)) | 0; + w17 &= 0x3ffffff; + /* k = 18 */ + lo = Math.imul(al9, bl9); + mid = Math.imul(al9, bh9); + mid = (mid + Math.imul(ah9, bl9)) | 0; + hi = Math.imul(ah9, bh9); + var w18 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0; + c = (((hi + (mid >>> 13)) | 0) + (w18 >>> 26)) | 0; + w18 &= 0x3ffffff; + o[0] = w0; + o[1] = w1; + o[2] = w2; + o[3] = w3; + o[4] = w4; + o[5] = w5; + o[6] = w6; + o[7] = w7; + o[8] = w8; + o[9] = w9; + o[10] = w10; + o[11] = w11; + o[12] = w12; + o[13] = w13; + o[14] = w14; + o[15] = w15; + o[16] = w16; + o[17] = w17; + o[18] = w18; + if (c !== 0) { + o[19] = c; + out.length++; + } + return out; + }; - // emit removeListener for all listeners on all events - if (arguments.length === 0) { - var keys = objectKeys(events); - var key; - for (i = 0; i < keys.length; ++i) { - key = keys[i]; - if (key === 'removeListener') continue; - this.removeAllListeners(key); - } - this.removeAllListeners('removeListener'); - this._events = objectCreate(null); - this._eventsCount = 0; - return this; - } + // Polyfill comb + if (!Math.imul) { + comb10MulTo = smallMulTo; + } - listeners = events[type]; + function bigMulTo (self, num, out) { + out.negative = num.negative ^ self.negative; + out.length = self.length + num.length; - if (typeof listeners === 'function') { - this.removeListener(type, listeners); - } else if (listeners) { - // LIFO order - for (i = listeners.length - 1; i >= 0; i--) { - this.removeListener(type, listeners[i]); - } + var carry = 0; + var hncarry = 0; + for (var k = 0; k < out.length - 1; k++) { + // Sum all words with the same `i + j = k` and accumulate `ncarry`, + // note that ncarry could be >= 0x3ffffff + var ncarry = hncarry; + hncarry = 0; + var rword = carry & 0x3ffffff; + var maxJ = Math.min(k, num.length - 1); + for (var j = Math.max(0, k - self.length + 1); j <= maxJ; j++) { + var i = k - j; + var a = self.words[i] | 0; + var b = num.words[j] | 0; + var r = a * b; + + var lo = r & 0x3ffffff; + ncarry = (ncarry + ((r / 0x4000000) | 0)) | 0; + lo = (lo + rword) | 0; + rword = lo & 0x3ffffff; + ncarry = (ncarry + (lo >>> 26)) | 0; + + hncarry += ncarry >>> 26; + ncarry &= 0x3ffffff; } + out.words[k] = rword; + carry = ncarry; + ncarry = hncarry; + } + if (carry !== 0) { + out.words[k] = carry; + } else { + out.length--; + } - return this; - }; + return out.strip(); + } -function _listeners(target, type, unwrap) { - var events = target._events; + function jumboMulTo (self, num, out) { + var fftm = new FFTM(); + return fftm.mulp(self, num, out); + } - if (!events) - return []; + BN.prototype.mulTo = function mulTo (num, out) { + var res; + var len = this.length + num.length; + if (this.length === 10 && num.length === 10) { + res = comb10MulTo(this, num, out); + } else if (len < 63) { + res = smallMulTo(this, num, out); + } else if (len < 1024) { + res = bigMulTo(this, num, out); + } else { + res = jumboMulTo(this, num, out); + } - var evlistener = events[type]; - if (!evlistener) - return []; + return res; + }; - if (typeof evlistener === 'function') - return unwrap ? [evlistener.listener || evlistener] : [evlistener]; + // Cooley-Tukey algorithm for FFT + // slightly revisited to rely on looping instead of recursion - return unwrap ? unwrapListeners(evlistener) : arrayClone(evlistener, evlistener.length); -} + function FFTM (x, y) { + this.x = x; + this.y = y; + } -EventEmitter.prototype.listeners = function listeners(type) { - return _listeners(this, type, true); -}; + FFTM.prototype.makeRBT = function makeRBT (N) { + var t = new Array(N); + var l = BN.prototype._countBits(N) - 1; + for (var i = 0; i < N; i++) { + t[i] = this.revBin(i, l, N); + } -EventEmitter.prototype.rawListeners = function rawListeners(type) { - return _listeners(this, type, false); -}; + return t; + }; -EventEmitter.listenerCount = function(emitter, type) { - if (typeof emitter.listenerCount === 'function') { - return emitter.listenerCount(type); - } else { - return listenerCount.call(emitter, type); - } -}; + // Returns binary-reversed representation of `x` + FFTM.prototype.revBin = function revBin (x, l, N) { + if (x === 0 || x === N - 1) return x; -EventEmitter.prototype.listenerCount = listenerCount; -function listenerCount(type) { - var events = this._events; + var rb = 0; + for (var i = 0; i < l; i++) { + rb |= (x & 1) << (l - i - 1); + x >>= 1; + } - if (events) { - var evlistener = events[type]; + return rb; + }; - if (typeof evlistener === 'function') { - return 1; - } else if (evlistener) { - return evlistener.length; + // Performs "tweedling" phase, therefore 'emulating' + // behaviour of the recursive algorithm + FFTM.prototype.permute = function permute (rbt, rws, iws, rtws, itws, N) { + for (var i = 0; i < N; i++) { + rtws[i] = rws[rbt[i]]; + itws[i] = iws[rbt[i]]; } - } + }; - return 0; -} + FFTM.prototype.transform = function transform (rws, iws, rtws, itws, N, rbt) { + this.permute(rbt, rws, iws, rtws, itws, N); -EventEmitter.prototype.eventNames = function eventNames() { - return this._eventsCount > 0 ? Reflect.ownKeys(this._events) : []; -}; + for (var s = 1; s < N; s <<= 1) { + var l = s << 1; -// About 1.5x faster than the two-arg version of Array#splice(). -function spliceOne(list, index) { - for (var i = index, k = i + 1, n = list.length; k < n; i += 1, k += 1) - list[i] = list[k]; - list.pop(); -} + var rtwdf = Math.cos(2 * Math.PI / l); + var itwdf = Math.sin(2 * Math.PI / l); -function arrayClone(arr, n) { - var copy = new Array(n); - for (var i = 0; i < n; ++i) - copy[i] = arr[i]; - return copy; -} + for (var p = 0; p < N; p += l) { + var rtwdf_ = rtwdf; + var itwdf_ = itwdf; -function unwrapListeners(arr) { - var ret = new Array(arr.length); - for (var i = 0; i < ret.length; ++i) { - ret[i] = arr[i].listener || arr[i]; - } - return ret; -} + for (var j = 0; j < s; j++) { + var re = rtws[p + j]; + var ie = itws[p + j]; -function objectCreatePolyfill(proto) { - var F = function() {}; - F.prototype = proto; - return new F; -} -function objectKeysPolyfill(obj) { - var keys = []; - for (var k in obj) if (Object.prototype.hasOwnProperty.call(obj, k)) { - keys.push(k); - } - return k; -} -function functionBindPolyfill(context) { - var fn = this; - return function () { - return fn.apply(context, arguments); - }; -} + var ro = rtws[p + j + s]; + var io = itws[p + j + s]; -},{}],88:[function(require,module,exports){ -var Buffer = require('safe-buffer').Buffer -var MD5 = require('md5.js') + var rx = rtwdf_ * ro - itwdf_ * io; -/* eslint-disable camelcase */ -function EVP_BytesToKey (password, salt, keyBits, ivLen) { - if (!Buffer.isBuffer(password)) password = Buffer.from(password, 'binary') - if (salt) { - if (!Buffer.isBuffer(salt)) salt = Buffer.from(salt, 'binary') - if (salt.length !== 8) throw new RangeError('salt should be Buffer with 8 byte length') - } + io = rtwdf_ * io + itwdf_ * ro; + ro = rx; - var keyLen = keyBits / 8 - var key = Buffer.alloc(keyLen) - var iv = Buffer.alloc(ivLen || 0) - var tmp = Buffer.alloc(0) + rtws[p + j] = re + ro; + itws[p + j] = ie + io; - while (keyLen > 0 || ivLen > 0) { - var hash = new MD5() - hash.update(tmp) - hash.update(password) - if (salt) hash.update(salt) - tmp = hash.digest() + rtws[p + j + s] = re - ro; + itws[p + j + s] = ie - io; - var used = 0 + /* jshint maxdepth : false */ + if (j !== l) { + rx = rtwdf * rtwdf_ - itwdf * itwdf_; - if (keyLen > 0) { - var keyStart = key.length - keyLen - used = Math.min(keyLen, tmp.length) - tmp.copy(key, keyStart, 0, used) - keyLen -= used + itwdf_ = rtwdf * itwdf_ + itwdf * rtwdf_; + rtwdf_ = rx; + } + } + } } + }; - if (used < tmp.length && ivLen > 0) { - var ivStart = iv.length - ivLen - var length = Math.min(ivLen, tmp.length - used) - tmp.copy(iv, ivStart, used, used + length) - ivLen -= length + FFTM.prototype.guessLen13b = function guessLen13b (n, m) { + var N = Math.max(m, n) | 1; + var odd = N & 1; + var i = 0; + for (N = N / 2 | 0; N; N = N >>> 1) { + i++; } - } - tmp.fill(0) - return { key: key, iv: iv } -} + return 1 << i + 1 + odd; + }; -module.exports = EVP_BytesToKey + FFTM.prototype.conjugate = function conjugate (rws, iws, N) { + if (N <= 1) return; -},{"md5.js":107,"safe-buffer":148}],89:[function(require,module,exports){ -'use strict' -var Buffer = require('safe-buffer').Buffer -var Transform = require('stream').Transform -var inherits = require('inherits') + for (var i = 0; i < N / 2; i++) { + var t = rws[i]; -function throwIfNotStringOrBuffer (val, prefix) { - if (!Buffer.isBuffer(val) && typeof val !== 'string') { - throw new TypeError(prefix + ' must be a string or a buffer') - } -} + rws[i] = rws[N - i - 1]; + rws[N - i - 1] = t; -function HashBase (blockSize) { - Transform.call(this) + t = iws[i]; - this._block = Buffer.allocUnsafe(blockSize) - this._blockSize = blockSize - this._blockOffset = 0 - this._length = [0, 0, 0, 0] + iws[i] = -iws[N - i - 1]; + iws[N - i - 1] = -t; + } + }; - this._finalized = false -} + FFTM.prototype.normalize13b = function normalize13b (ws, N) { + var carry = 0; + for (var i = 0; i < N / 2; i++) { + var w = Math.round(ws[2 * i + 1] / N) * 0x2000 + + Math.round(ws[2 * i] / N) + + carry; -inherits(HashBase, Transform) + ws[i] = w & 0x3ffffff; -HashBase.prototype._transform = function (chunk, encoding, callback) { - var error = null - try { - this.update(chunk, encoding) - } catch (err) { - error = err - } + if (w < 0x4000000) { + carry = 0; + } else { + carry = w / 0x4000000 | 0; + } + } - callback(error) -} + return ws; + }; -HashBase.prototype._flush = function (callback) { - var error = null - try { - this.push(this.digest()) - } catch (err) { - error = err - } + FFTM.prototype.convert13b = function convert13b (ws, len, rws, N) { + var carry = 0; + for (var i = 0; i < len; i++) { + carry = carry + (ws[i] | 0); - callback(error) -} + rws[2 * i] = carry & 0x1fff; carry = carry >>> 13; + rws[2 * i + 1] = carry & 0x1fff; carry = carry >>> 13; + } -HashBase.prototype.update = function (data, encoding) { - throwIfNotStringOrBuffer(data, 'Data') - if (this._finalized) throw new Error('Digest already called') - if (!Buffer.isBuffer(data)) data = Buffer.from(data, encoding) + // Pad with zeroes + for (i = 2 * len; i < N; ++i) { + rws[i] = 0; + } - // consume data - var block = this._block - var offset = 0 - while (this._blockOffset + data.length - offset >= this._blockSize) { - for (var i = this._blockOffset; i < this._blockSize;) block[i++] = data[offset++] - this._update() - this._blockOffset = 0 - } - while (offset < data.length) block[this._blockOffset++] = data[offset++] + assert(carry === 0); + assert((carry & ~0x1fff) === 0); + }; - // update length - for (var j = 0, carry = data.length * 8; carry > 0; ++j) { - this._length[j] += carry - carry = (this._length[j] / 0x0100000000) | 0 - if (carry > 0) this._length[j] -= 0x0100000000 * carry - } + FFTM.prototype.stub = function stub (N) { + var ph = new Array(N); + for (var i = 0; i < N; i++) { + ph[i] = 0; + } - return this -} + return ph; + }; -HashBase.prototype._update = function () { - throw new Error('_update is not implemented') -} + FFTM.prototype.mulp = function mulp (x, y, out) { + var N = 2 * this.guessLen13b(x.length, y.length); -HashBase.prototype.digest = function (encoding) { - if (this._finalized) throw new Error('Digest already called') - this._finalized = true + var rbt = this.makeRBT(N); - var digest = this._digest() - if (encoding !== undefined) digest = digest.toString(encoding) + var _ = this.stub(N); - // reset state - this._block.fill(0) - this._blockOffset = 0 - for (var i = 0; i < 4; ++i) this._length[i] = 0 + var rws = new Array(N); + var rwst = new Array(N); + var iwst = new Array(N); - return digest -} + var nrws = new Array(N); + var nrwst = new Array(N); + var niwst = new Array(N); -HashBase.prototype._digest = function () { - throw new Error('_digest is not implemented') -} + var rmws = out.words; + rmws.length = N; -module.exports = HashBase + this.convert13b(x.words, x.length, rws, N); + this.convert13b(y.words, y.length, nrws, N); -},{"inherits":104,"safe-buffer":148,"stream":157}],90:[function(require,module,exports){ -var hash = exports; + this.transform(rws, _, rwst, iwst, N, rbt); + this.transform(nrws, _, nrwst, niwst, N, rbt); -hash.utils = require('./hash/utils'); -hash.common = require('./hash/common'); -hash.sha = require('./hash/sha'); -hash.ripemd = require('./hash/ripemd'); -hash.hmac = require('./hash/hmac'); + for (var i = 0; i < N; i++) { + var rx = rwst[i] * nrwst[i] - iwst[i] * niwst[i]; + iwst[i] = rwst[i] * niwst[i] + iwst[i] * nrwst[i]; + rwst[i] = rx; + } -// Proxy hash functions to the main object -hash.sha1 = hash.sha.sha1; -hash.sha256 = hash.sha.sha256; -hash.sha224 = hash.sha.sha224; -hash.sha384 = hash.sha.sha384; -hash.sha512 = hash.sha.sha512; -hash.ripemd160 = hash.ripemd.ripemd160; + this.conjugate(rwst, iwst, N); + this.transform(rwst, iwst, rmws, _, N, rbt); + this.conjugate(rmws, _, N); + this.normalize13b(rmws, N); -},{"./hash/common":91,"./hash/hmac":92,"./hash/ripemd":93,"./hash/sha":94,"./hash/utils":101}],91:[function(require,module,exports){ -'use strict'; + out.negative = x.negative ^ y.negative; + out.length = x.length + y.length; + return out.strip(); + }; -var utils = require('./utils'); -var assert = require('minimalistic-assert'); + // Multiply `this` by `num` + BN.prototype.mul = function mul (num) { + var out = new BN(null); + out.words = new Array(this.length + num.length); + return this.mulTo(num, out); + }; -function BlockHash() { - this.pending = null; - this.pendingTotal = 0; - this.blockSize = this.constructor.blockSize; - this.outSize = this.constructor.outSize; - this.hmacStrength = this.constructor.hmacStrength; - this.padLength = this.constructor.padLength / 8; - this.endian = 'big'; + // Multiply employing FFT + BN.prototype.mulf = function mulf (num) { + var out = new BN(null); + out.words = new Array(this.length + num.length); + return jumboMulTo(this, num, out); + }; - this._delta8 = this.blockSize / 8; - this._delta32 = this.blockSize / 32; -} -exports.BlockHash = BlockHash; + // In-place Multiplication + BN.prototype.imul = function imul (num) { + return this.clone().mulTo(num, this); + }; -BlockHash.prototype.update = function update(msg, enc) { - // Convert message to array, pad it, and join into 32bit blocks - msg = utils.toArray(msg, enc); - if (!this.pending) - this.pending = msg; - else - this.pending = this.pending.concat(msg); - this.pendingTotal += msg.length; + BN.prototype.imuln = function imuln (num) { + assert(typeof num === 'number'); + assert(num < 0x4000000); - // Enough data, try updating - if (this.pending.length >= this._delta8) { - msg = this.pending; + // Carry + var carry = 0; + for (var i = 0; i < this.length; i++) { + var w = (this.words[i] | 0) * num; + var lo = (w & 0x3ffffff) + (carry & 0x3ffffff); + carry >>= 26; + carry += (w / 0x4000000) | 0; + // NOTE: lo is 27bit maximum + carry += lo >>> 26; + this.words[i] = lo & 0x3ffffff; + } - // Process pending data in blocks - var r = msg.length % this._delta8; - this.pending = msg.slice(msg.length - r, msg.length); - if (this.pending.length === 0) - this.pending = null; + if (carry !== 0) { + this.words[i] = carry; + this.length++; + } - msg = utils.join32(msg, 0, msg.length - r, this.endian); - for (var i = 0; i < msg.length; i += this._delta32) - this._update(msg, i, i + this._delta32); - } + return this; + }; - return this; -}; + BN.prototype.muln = function muln (num) { + return this.clone().imuln(num); + }; -BlockHash.prototype.digest = function digest(enc) { - this.update(this._pad()); - assert(this.pending === null); + // `this` * `this` + BN.prototype.sqr = function sqr () { + return this.mul(this); + }; - return this._digest(enc); -}; + // `this` * `this` in-place + BN.prototype.isqr = function isqr () { + return this.imul(this.clone()); + }; -BlockHash.prototype._pad = function pad() { - var len = this.pendingTotal; - var bytes = this._delta8; - var k = bytes - ((len + this.padLength) % bytes); - var res = new Array(k + this.padLength); - res[0] = 0x80; - for (var i = 1; i < k; i++) - res[i] = 0; + // Math.pow(`this`, `num`) + BN.prototype.pow = function pow (num) { + var w = toBitArray(num); + if (w.length === 0) return new BN(1); - // Append length - len <<= 3; - if (this.endian === 'big') { - for (var t = 8; t < this.padLength; t++) - res[i++] = 0; + // Skip leading zeroes + var res = this; + for (var i = 0; i < w.length; i++, res = res.sqr()) { + if (w[i] !== 0) break; + } - res[i++] = 0; - res[i++] = 0; - res[i++] = 0; - res[i++] = 0; - res[i++] = (len >>> 24) & 0xff; - res[i++] = (len >>> 16) & 0xff; - res[i++] = (len >>> 8) & 0xff; - res[i++] = len & 0xff; - } else { - res[i++] = len & 0xff; - res[i++] = (len >>> 8) & 0xff; - res[i++] = (len >>> 16) & 0xff; - res[i++] = (len >>> 24) & 0xff; - res[i++] = 0; - res[i++] = 0; - res[i++] = 0; - res[i++] = 0; + if (++i < w.length) { + for (var q = res.sqr(); i < w.length; i++, q = q.sqr()) { + if (w[i] === 0) continue; - for (t = 8; t < this.padLength; t++) - res[i++] = 0; - } + res = res.mul(q); + } + } - return res; -}; + return res; + }; -},{"./utils":101,"minimalistic-assert":109}],92:[function(require,module,exports){ -'use strict'; + // Shift-left in-place + BN.prototype.iushln = function iushln (bits) { + assert(typeof bits === 'number' && bits >= 0); + var r = bits % 26; + var s = (bits - r) / 26; + var carryMask = (0x3ffffff >>> (26 - r)) << (26 - r); + var i; -var utils = require('./utils'); -var assert = require('minimalistic-assert'); + if (r !== 0) { + var carry = 0; -function Hmac(hash, key, enc) { - if (!(this instanceof Hmac)) - return new Hmac(hash, key, enc); - this.Hash = hash; - this.blockSize = hash.blockSize / 8; - this.outSize = hash.outSize / 8; - this.inner = null; - this.outer = null; + for (i = 0; i < this.length; i++) { + var newCarry = this.words[i] & carryMask; + var c = ((this.words[i] | 0) - newCarry) << r; + this.words[i] = c | carry; + carry = newCarry >>> (26 - r); + } - this._init(utils.toArray(key, enc)); -} -module.exports = Hmac; + if (carry) { + this.words[i] = carry; + this.length++; + } + } -Hmac.prototype._init = function init(key) { - // Shorten key, if needed - if (key.length > this.blockSize) - key = new this.Hash().update(key).digest(); - assert(key.length <= this.blockSize); + if (s !== 0) { + for (i = this.length - 1; i >= 0; i--) { + this.words[i + s] = this.words[i]; + } - // Add padding to key - for (var i = key.length; i < this.blockSize; i++) - key.push(0); + for (i = 0; i < s; i++) { + this.words[i] = 0; + } - for (i = 0; i < key.length; i++) - key[i] ^= 0x36; - this.inner = new this.Hash().update(key); + this.length += s; + } - // 0x36 ^ 0x5c = 0x6a - for (i = 0; i < key.length; i++) - key[i] ^= 0x6a; - this.outer = new this.Hash().update(key); -}; + return this.strip(); + }; -Hmac.prototype.update = function update(msg, enc) { - this.inner.update(msg, enc); - return this; -}; + BN.prototype.ishln = function ishln (bits) { + // TODO(indutny): implement me + assert(this.negative === 0); + return this.iushln(bits); + }; -Hmac.prototype.digest = function digest(enc) { - this.outer.update(this.inner.digest()); - return this.outer.digest(enc); -}; + // Shift-right in-place + // NOTE: `hint` is a lowest bit before trailing zeroes + // NOTE: if `extended` is present - it will be filled with destroyed bits + BN.prototype.iushrn = function iushrn (bits, hint, extended) { + assert(typeof bits === 'number' && bits >= 0); + var h; + if (hint) { + h = (hint - (hint % 26)) / 26; + } else { + h = 0; + } -},{"./utils":101,"minimalistic-assert":109}],93:[function(require,module,exports){ -'use strict'; + var r = bits % 26; + var s = Math.min((bits - r) / 26, this.length); + var mask = 0x3ffffff ^ ((0x3ffffff >>> r) << r); + var maskedWords = extended; -var utils = require('./utils'); -var common = require('./common'); + h -= s; + h = Math.max(0, h); -var rotl32 = utils.rotl32; -var sum32 = utils.sum32; -var sum32_3 = utils.sum32_3; -var sum32_4 = utils.sum32_4; -var BlockHash = common.BlockHash; + // Extended mode, copy masked part + if (maskedWords) { + for (var i = 0; i < s; i++) { + maskedWords.words[i] = this.words[i]; + } + maskedWords.length = s; + } -function RIPEMD160() { - if (!(this instanceof RIPEMD160)) - return new RIPEMD160(); + if (s === 0) { + // No-op, we should not move anything at all + } else if (this.length > s) { + this.length -= s; + for (i = 0; i < this.length; i++) { + this.words[i] = this.words[i + s]; + } + } else { + this.words[0] = 0; + this.length = 1; + } - BlockHash.call(this); + var carry = 0; + for (i = this.length - 1; i >= 0 && (carry !== 0 || i >= h); i--) { + var word = this.words[i] | 0; + this.words[i] = (carry << (26 - r)) | (word >>> r); + carry = word & mask; + } - this.h = [ 0x67452301, 0xefcdab89, 0x98badcfe, 0x10325476, 0xc3d2e1f0 ]; - this.endian = 'little'; -} -utils.inherits(RIPEMD160, BlockHash); -exports.ripemd160 = RIPEMD160; + // Push carried bits as a mask + if (maskedWords && carry !== 0) { + maskedWords.words[maskedWords.length++] = carry; + } -RIPEMD160.blockSize = 512; -RIPEMD160.outSize = 160; -RIPEMD160.hmacStrength = 192; -RIPEMD160.padLength = 64; + if (this.length === 0) { + this.words[0] = 0; + this.length = 1; + } -RIPEMD160.prototype._update = function update(msg, start) { - var A = this.h[0]; - var B = this.h[1]; - var C = this.h[2]; - var D = this.h[3]; - var E = this.h[4]; - var Ah = A; - var Bh = B; - var Ch = C; - var Dh = D; - var Eh = E; - for (var j = 0; j < 80; j++) { - var T = sum32( - rotl32( - sum32_4(A, f(j, B, C, D), msg[r[j] + start], K(j)), - s[j]), - E); - A = E; - E = D; - D = rotl32(C, 10); - C = B; - B = T; - T = sum32( - rotl32( - sum32_4(Ah, f(79 - j, Bh, Ch, Dh), msg[rh[j] + start], Kh(j)), - sh[j]), - Eh); - Ah = Eh; - Eh = Dh; - Dh = rotl32(Ch, 10); - Ch = Bh; - Bh = T; - } - T = sum32_3(this.h[1], C, Dh); - this.h[1] = sum32_3(this.h[2], D, Eh); - this.h[2] = sum32_3(this.h[3], E, Ah); - this.h[3] = sum32_3(this.h[4], A, Bh); - this.h[4] = sum32_3(this.h[0], B, Ch); - this.h[0] = T; -}; + return this.strip(); + }; -RIPEMD160.prototype._digest = function digest(enc) { - if (enc === 'hex') - return utils.toHex32(this.h, 'little'); - else - return utils.split32(this.h, 'little'); -}; + BN.prototype.ishrn = function ishrn (bits, hint, extended) { + // TODO(indutny): implement me + assert(this.negative === 0); + return this.iushrn(bits, hint, extended); + }; -function f(j, x, y, z) { - if (j <= 15) - return x ^ y ^ z; - else if (j <= 31) - return (x & y) | ((~x) & z); - else if (j <= 47) - return (x | (~y)) ^ z; - else if (j <= 63) - return (x & z) | (y & (~z)); - else - return x ^ (y | (~z)); -} + // Shift-left + BN.prototype.shln = function shln (bits) { + return this.clone().ishln(bits); + }; -function K(j) { - if (j <= 15) - return 0x00000000; - else if (j <= 31) - return 0x5a827999; - else if (j <= 47) - return 0x6ed9eba1; - else if (j <= 63) - return 0x8f1bbcdc; - else - return 0xa953fd4e; -} + BN.prototype.ushln = function ushln (bits) { + return this.clone().iushln(bits); + }; -function Kh(j) { - if (j <= 15) - return 0x50a28be6; - else if (j <= 31) - return 0x5c4dd124; - else if (j <= 47) - return 0x6d703ef3; - else if (j <= 63) - return 0x7a6d76e9; - else - return 0x00000000; -} + // Shift-right + BN.prototype.shrn = function shrn (bits) { + return this.clone().ishrn(bits); + }; -var r = [ - 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, - 7, 4, 13, 1, 10, 6, 15, 3, 12, 0, 9, 5, 2, 14, 11, 8, - 3, 10, 14, 4, 9, 15, 8, 1, 2, 7, 0, 6, 13, 11, 5, 12, - 1, 9, 11, 10, 0, 8, 12, 4, 13, 3, 7, 15, 14, 5, 6, 2, - 4, 0, 5, 9, 7, 12, 2, 10, 14, 1, 3, 8, 11, 6, 15, 13 -]; + BN.prototype.ushrn = function ushrn (bits) { + return this.clone().iushrn(bits); + }; -var rh = [ - 5, 14, 7, 0, 9, 2, 11, 4, 13, 6, 15, 8, 1, 10, 3, 12, - 6, 11, 3, 7, 0, 13, 5, 10, 14, 15, 8, 12, 4, 9, 1, 2, - 15, 5, 1, 3, 7, 14, 6, 9, 11, 8, 12, 2, 10, 0, 4, 13, - 8, 6, 4, 1, 3, 11, 15, 0, 5, 12, 2, 13, 9, 7, 10, 14, - 12, 15, 10, 4, 1, 5, 8, 7, 6, 2, 13, 14, 0, 3, 9, 11 -]; + // Test if n bit is set + BN.prototype.testn = function testn (bit) { + assert(typeof bit === 'number' && bit >= 0); + var r = bit % 26; + var s = (bit - r) / 26; + var q = 1 << r; -var s = [ - 11, 14, 15, 12, 5, 8, 7, 9, 11, 13, 14, 15, 6, 7, 9, 8, - 7, 6, 8, 13, 11, 9, 7, 15, 7, 12, 15, 9, 11, 7, 13, 12, - 11, 13, 6, 7, 14, 9, 13, 15, 14, 8, 13, 6, 5, 12, 7, 5, - 11, 12, 14, 15, 14, 15, 9, 8, 9, 14, 5, 6, 8, 6, 5, 12, - 9, 15, 5, 11, 6, 8, 13, 12, 5, 12, 13, 14, 11, 8, 5, 6 -]; + // Fast case: bit is much higher than all existing words + if (this.length <= s) return false; -var sh = [ - 8, 9, 9, 11, 13, 15, 15, 5, 7, 7, 8, 11, 14, 14, 12, 6, - 9, 13, 15, 7, 12, 8, 9, 11, 7, 7, 12, 7, 6, 15, 13, 11, - 9, 7, 15, 11, 8, 6, 6, 14, 12, 13, 5, 14, 13, 13, 7, 5, - 15, 5, 8, 11, 14, 14, 6, 14, 6, 9, 12, 9, 12, 5, 15, 8, - 8, 5, 12, 9, 12, 5, 14, 6, 8, 13, 6, 5, 15, 13, 11, 11 -]; + // Check bit and return + var w = this.words[s]; -},{"./common":91,"./utils":101}],94:[function(require,module,exports){ -'use strict'; + return !!(w & q); + }; -exports.sha1 = require('./sha/1'); -exports.sha224 = require('./sha/224'); -exports.sha256 = require('./sha/256'); -exports.sha384 = require('./sha/384'); -exports.sha512 = require('./sha/512'); + // Return only lowers bits of number (in-place) + BN.prototype.imaskn = function imaskn (bits) { + assert(typeof bits === 'number' && bits >= 0); + var r = bits % 26; + var s = (bits - r) / 26; -},{"./sha/1":95,"./sha/224":96,"./sha/256":97,"./sha/384":98,"./sha/512":99}],95:[function(require,module,exports){ -'use strict'; + assert(this.negative === 0, 'imaskn works only with positive numbers'); -var utils = require('../utils'); -var common = require('../common'); -var shaCommon = require('./common'); + if (this.length <= s) { + return this; + } -var rotl32 = utils.rotl32; -var sum32 = utils.sum32; -var sum32_5 = utils.sum32_5; -var ft_1 = shaCommon.ft_1; -var BlockHash = common.BlockHash; + if (r !== 0) { + s++; + } + this.length = Math.min(s, this.length); -var sha1_K = [ - 0x5A827999, 0x6ED9EBA1, - 0x8F1BBCDC, 0xCA62C1D6 -]; + if (r !== 0) { + var mask = 0x3ffffff ^ ((0x3ffffff >>> r) << r); + this.words[this.length - 1] &= mask; + } -function SHA1() { - if (!(this instanceof SHA1)) - return new SHA1(); + return this.strip(); + }; - BlockHash.call(this); - this.h = [ - 0x67452301, 0xefcdab89, 0x98badcfe, - 0x10325476, 0xc3d2e1f0 ]; - this.W = new Array(80); -} + // Return only lowers bits of number + BN.prototype.maskn = function maskn (bits) { + return this.clone().imaskn(bits); + }; -utils.inherits(SHA1, BlockHash); -module.exports = SHA1; + // Add plain number `num` to `this` + BN.prototype.iaddn = function iaddn (num) { + assert(typeof num === 'number'); + assert(num < 0x4000000); + if (num < 0) return this.isubn(-num); -SHA1.blockSize = 512; -SHA1.outSize = 160; -SHA1.hmacStrength = 80; -SHA1.padLength = 64; + // Possible sign change + if (this.negative !== 0) { + if (this.length === 1 && (this.words[0] | 0) < num) { + this.words[0] = num - (this.words[0] | 0); + this.negative = 0; + return this; + } -SHA1.prototype._update = function _update(msg, start) { - var W = this.W; + this.negative = 0; + this.isubn(num); + this.negative = 1; + return this; + } - for (var i = 0; i < 16; i++) - W[i] = msg[start + i]; + // Add without checks + return this._iaddn(num); + }; - for(; i < W.length; i++) - W[i] = rotl32(W[i - 3] ^ W[i - 8] ^ W[i - 14] ^ W[i - 16], 1); + BN.prototype._iaddn = function _iaddn (num) { + this.words[0] += num; - var a = this.h[0]; - var b = this.h[1]; - var c = this.h[2]; - var d = this.h[3]; - var e = this.h[4]; + // Carry + for (var i = 0; i < this.length && this.words[i] >= 0x4000000; i++) { + this.words[i] -= 0x4000000; + if (i === this.length - 1) { + this.words[i + 1] = 1; + } else { + this.words[i + 1]++; + } + } + this.length = Math.max(this.length, i + 1); - for (i = 0; i < W.length; i++) { - var s = ~~(i / 20); - var t = sum32_5(rotl32(a, 5), ft_1(s, b, c, d), e, W[i], sha1_K[s]); - e = d; - d = c; - c = rotl32(b, 30); - b = a; - a = t; - } + return this; + }; - this.h[0] = sum32(this.h[0], a); - this.h[1] = sum32(this.h[1], b); - this.h[2] = sum32(this.h[2], c); - this.h[3] = sum32(this.h[3], d); - this.h[4] = sum32(this.h[4], e); -}; + // Subtract plain number `num` from `this` + BN.prototype.isubn = function isubn (num) { + assert(typeof num === 'number'); + assert(num < 0x4000000); + if (num < 0) return this.iaddn(-num); -SHA1.prototype._digest = function digest(enc) { - if (enc === 'hex') - return utils.toHex32(this.h, 'big'); - else - return utils.split32(this.h, 'big'); -}; + if (this.negative !== 0) { + this.negative = 0; + this.iaddn(num); + this.negative = 1; + return this; + } -},{"../common":91,"../utils":101,"./common":100}],96:[function(require,module,exports){ -'use strict'; + this.words[0] -= num; -var utils = require('../utils'); -var SHA256 = require('./256'); + if (this.length === 1 && this.words[0] < 0) { + this.words[0] = -this.words[0]; + this.negative = 1; + } else { + // Carry + for (var i = 0; i < this.length && this.words[i] < 0; i++) { + this.words[i] += 0x4000000; + this.words[i + 1] -= 1; + } + } -function SHA224() { - if (!(this instanceof SHA224)) - return new SHA224(); + return this.strip(); + }; - SHA256.call(this); - this.h = [ - 0xc1059ed8, 0x367cd507, 0x3070dd17, 0xf70e5939, - 0xffc00b31, 0x68581511, 0x64f98fa7, 0xbefa4fa4 ]; -} -utils.inherits(SHA224, SHA256); -module.exports = SHA224; + BN.prototype.addn = function addn (num) { + return this.clone().iaddn(num); + }; -SHA224.blockSize = 512; -SHA224.outSize = 224; -SHA224.hmacStrength = 192; -SHA224.padLength = 64; + BN.prototype.subn = function subn (num) { + return this.clone().isubn(num); + }; -SHA224.prototype._digest = function digest(enc) { - // Just truncate output - if (enc === 'hex') - return utils.toHex32(this.h.slice(0, 7), 'big'); - else - return utils.split32(this.h.slice(0, 7), 'big'); -}; + BN.prototype.iabs = function iabs () { + this.negative = 0; + return this; + }; -},{"../utils":101,"./256":97}],97:[function(require,module,exports){ -'use strict'; + BN.prototype.abs = function abs () { + return this.clone().iabs(); + }; -var utils = require('../utils'); -var common = require('../common'); -var shaCommon = require('./common'); -var assert = require('minimalistic-assert'); + BN.prototype._ishlnsubmul = function _ishlnsubmul (num, mul, shift) { + var len = num.length + shift; + var i; -var sum32 = utils.sum32; -var sum32_4 = utils.sum32_4; -var sum32_5 = utils.sum32_5; -var ch32 = shaCommon.ch32; -var maj32 = shaCommon.maj32; -var s0_256 = shaCommon.s0_256; -var s1_256 = shaCommon.s1_256; -var g0_256 = shaCommon.g0_256; -var g1_256 = shaCommon.g1_256; + this._expand(len); -var BlockHash = common.BlockHash; + var w; + var carry = 0; + for (i = 0; i < num.length; i++) { + w = (this.words[i + shift] | 0) + carry; + var right = (num.words[i] | 0) * mul; + w -= right & 0x3ffffff; + carry = (w >> 26) - ((right / 0x4000000) | 0); + this.words[i + shift] = w & 0x3ffffff; + } + for (; i < this.length - shift; i++) { + w = (this.words[i + shift] | 0) + carry; + carry = w >> 26; + this.words[i + shift] = w & 0x3ffffff; + } -var sha256_K = [ - 0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5, - 0x3956c25b, 0x59f111f1, 0x923f82a4, 0xab1c5ed5, - 0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3, - 0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174, - 0xe49b69c1, 0xefbe4786, 0x0fc19dc6, 0x240ca1cc, - 0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da, - 0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7, - 0xc6e00bf3, 0xd5a79147, 0x06ca6351, 0x14292967, - 0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13, - 0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85, - 0xa2bfe8a1, 0xa81a664b, 0xc24b8b70, 0xc76c51a3, - 0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070, - 0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5, - 0x391c0cb3, 0x4ed8aa4a, 0x5b9cca4f, 0x682e6ff3, - 0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208, - 0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2 -]; + if (carry === 0) return this.strip(); -function SHA256() { - if (!(this instanceof SHA256)) - return new SHA256(); + // Subtraction overflow + assert(carry === -1); + carry = 0; + for (i = 0; i < this.length; i++) { + w = -(this.words[i] | 0) + carry; + carry = w >> 26; + this.words[i] = w & 0x3ffffff; + } + this.negative = 1; - BlockHash.call(this); - this.h = [ - 0x6a09e667, 0xbb67ae85, 0x3c6ef372, 0xa54ff53a, - 0x510e527f, 0x9b05688c, 0x1f83d9ab, 0x5be0cd19 - ]; - this.k = sha256_K; - this.W = new Array(64); -} -utils.inherits(SHA256, BlockHash); -module.exports = SHA256; + return this.strip(); + }; -SHA256.blockSize = 512; -SHA256.outSize = 256; -SHA256.hmacStrength = 192; -SHA256.padLength = 64; + BN.prototype._wordDiv = function _wordDiv (num, mode) { + var shift = this.length - num.length; -SHA256.prototype._update = function _update(msg, start) { - var W = this.W; + var a = this.clone(); + var b = num; - for (var i = 0; i < 16; i++) - W[i] = msg[start + i]; - for (; i < W.length; i++) - W[i] = sum32_4(g1_256(W[i - 2]), W[i - 7], g0_256(W[i - 15]), W[i - 16]); + // Normalize + var bhi = b.words[b.length - 1] | 0; + var bhiBits = this._countBits(bhi); + shift = 26 - bhiBits; + if (shift !== 0) { + b = b.ushln(shift); + a.iushln(shift); + bhi = b.words[b.length - 1] | 0; + } - var a = this.h[0]; - var b = this.h[1]; - var c = this.h[2]; - var d = this.h[3]; - var e = this.h[4]; - var f = this.h[5]; - var g = this.h[6]; - var h = this.h[7]; + // Initialize quotient + var m = a.length - b.length; + var q; - assert(this.k.length === W.length); - for (i = 0; i < W.length; i++) { - var T1 = sum32_5(h, s1_256(e), ch32(e, f, g), this.k[i], W[i]); - var T2 = sum32(s0_256(a), maj32(a, b, c)); - h = g; - g = f; - f = e; - e = sum32(d, T1); - d = c; - c = b; - b = a; - a = sum32(T1, T2); - } + if (mode !== 'mod') { + q = new BN(null); + q.length = m + 1; + q.words = new Array(q.length); + for (var i = 0; i < q.length; i++) { + q.words[i] = 0; + } + } - this.h[0] = sum32(this.h[0], a); - this.h[1] = sum32(this.h[1], b); - this.h[2] = sum32(this.h[2], c); - this.h[3] = sum32(this.h[3], d); - this.h[4] = sum32(this.h[4], e); - this.h[5] = sum32(this.h[5], f); - this.h[6] = sum32(this.h[6], g); - this.h[7] = sum32(this.h[7], h); -}; + var diff = a.clone()._ishlnsubmul(b, 1, m); + if (diff.negative === 0) { + a = diff; + if (q) { + q.words[m] = 1; + } + } -SHA256.prototype._digest = function digest(enc) { - if (enc === 'hex') - return utils.toHex32(this.h, 'big'); - else - return utils.split32(this.h, 'big'); -}; + for (var j = m - 1; j >= 0; j--) { + var qj = (a.words[b.length + j] | 0) * 0x4000000 + + (a.words[b.length + j - 1] | 0); -},{"../common":91,"../utils":101,"./common":100,"minimalistic-assert":109}],98:[function(require,module,exports){ -'use strict'; + // NOTE: (qj / bhi) is (0x3ffffff * 0x4000000 + 0x3ffffff) / 0x2000000 max + // (0x7ffffff) + qj = Math.min((qj / bhi) | 0, 0x3ffffff); -var utils = require('../utils'); + a._ishlnsubmul(b, qj, j); + while (a.negative !== 0) { + qj--; + a.negative = 0; + a._ishlnsubmul(b, 1, j); + if (!a.isZero()) { + a.negative ^= 1; + } + } + if (q) { + q.words[j] = qj; + } + } + if (q) { + q.strip(); + } + a.strip(); -var SHA512 = require('./512'); + // Denormalize + if (mode !== 'div' && shift !== 0) { + a.iushrn(shift); + } -function SHA384() { - if (!(this instanceof SHA384)) - return new SHA384(); + return { + div: q || null, + mod: a + }; + }; - SHA512.call(this); - this.h = [ - 0xcbbb9d5d, 0xc1059ed8, - 0x629a292a, 0x367cd507, - 0x9159015a, 0x3070dd17, - 0x152fecd8, 0xf70e5939, - 0x67332667, 0xffc00b31, - 0x8eb44a87, 0x68581511, - 0xdb0c2e0d, 0x64f98fa7, - 0x47b5481d, 0xbefa4fa4 ]; -} -utils.inherits(SHA384, SHA512); -module.exports = SHA384; + // NOTE: 1) `mode` can be set to `mod` to request mod only, + // to `div` to request div only, or be absent to + // request both div & mod + // 2) `positive` is true if unsigned mod is requested + BN.prototype.divmod = function divmod (num, mode, positive) { + assert(!num.isZero()); -SHA384.blockSize = 1024; -SHA384.outSize = 384; -SHA384.hmacStrength = 192; -SHA384.padLength = 128; + if (this.isZero()) { + return { + div: new BN(0), + mod: new BN(0) + }; + } -SHA384.prototype._digest = function digest(enc) { - if (enc === 'hex') - return utils.toHex32(this.h.slice(0, 12), 'big'); - else - return utils.split32(this.h.slice(0, 12), 'big'); -}; + var div, mod, res; + if (this.negative !== 0 && num.negative === 0) { + res = this.neg().divmod(num, mode); -},{"../utils":101,"./512":99}],99:[function(require,module,exports){ -'use strict'; + if (mode !== 'mod') { + div = res.div.neg(); + } -var utils = require('../utils'); -var common = require('../common'); -var assert = require('minimalistic-assert'); + if (mode !== 'div') { + mod = res.mod.neg(); + if (positive && mod.negative !== 0) { + mod.iadd(num); + } + } -var rotr64_hi = utils.rotr64_hi; -var rotr64_lo = utils.rotr64_lo; -var shr64_hi = utils.shr64_hi; -var shr64_lo = utils.shr64_lo; -var sum64 = utils.sum64; -var sum64_hi = utils.sum64_hi; -var sum64_lo = utils.sum64_lo; -var sum64_4_hi = utils.sum64_4_hi; -var sum64_4_lo = utils.sum64_4_lo; -var sum64_5_hi = utils.sum64_5_hi; -var sum64_5_lo = utils.sum64_5_lo; + return { + div: div, + mod: mod + }; + } -var BlockHash = common.BlockHash; + if (this.negative === 0 && num.negative !== 0) { + res = this.divmod(num.neg(), mode); -var sha512_K = [ - 0x428a2f98, 0xd728ae22, 0x71374491, 0x23ef65cd, - 0xb5c0fbcf, 0xec4d3b2f, 0xe9b5dba5, 0x8189dbbc, - 0x3956c25b, 0xf348b538, 0x59f111f1, 0xb605d019, - 0x923f82a4, 0xaf194f9b, 0xab1c5ed5, 0xda6d8118, - 0xd807aa98, 0xa3030242, 0x12835b01, 0x45706fbe, - 0x243185be, 0x4ee4b28c, 0x550c7dc3, 0xd5ffb4e2, - 0x72be5d74, 0xf27b896f, 0x80deb1fe, 0x3b1696b1, - 0x9bdc06a7, 0x25c71235, 0xc19bf174, 0xcf692694, - 0xe49b69c1, 0x9ef14ad2, 0xefbe4786, 0x384f25e3, - 0x0fc19dc6, 0x8b8cd5b5, 0x240ca1cc, 0x77ac9c65, - 0x2de92c6f, 0x592b0275, 0x4a7484aa, 0x6ea6e483, - 0x5cb0a9dc, 0xbd41fbd4, 0x76f988da, 0x831153b5, - 0x983e5152, 0xee66dfab, 0xa831c66d, 0x2db43210, - 0xb00327c8, 0x98fb213f, 0xbf597fc7, 0xbeef0ee4, - 0xc6e00bf3, 0x3da88fc2, 0xd5a79147, 0x930aa725, - 0x06ca6351, 0xe003826f, 0x14292967, 0x0a0e6e70, - 0x27b70a85, 0x46d22ffc, 0x2e1b2138, 0x5c26c926, - 0x4d2c6dfc, 0x5ac42aed, 0x53380d13, 0x9d95b3df, - 0x650a7354, 0x8baf63de, 0x766a0abb, 0x3c77b2a8, - 0x81c2c92e, 0x47edaee6, 0x92722c85, 0x1482353b, - 0xa2bfe8a1, 0x4cf10364, 0xa81a664b, 0xbc423001, - 0xc24b8b70, 0xd0f89791, 0xc76c51a3, 0x0654be30, - 0xd192e819, 0xd6ef5218, 0xd6990624, 0x5565a910, - 0xf40e3585, 0x5771202a, 0x106aa070, 0x32bbd1b8, - 0x19a4c116, 0xb8d2d0c8, 0x1e376c08, 0x5141ab53, - 0x2748774c, 0xdf8eeb99, 0x34b0bcb5, 0xe19b48a8, - 0x391c0cb3, 0xc5c95a63, 0x4ed8aa4a, 0xe3418acb, - 0x5b9cca4f, 0x7763e373, 0x682e6ff3, 0xd6b2b8a3, - 0x748f82ee, 0x5defb2fc, 0x78a5636f, 0x43172f60, - 0x84c87814, 0xa1f0ab72, 0x8cc70208, 0x1a6439ec, - 0x90befffa, 0x23631e28, 0xa4506ceb, 0xde82bde9, - 0xbef9a3f7, 0xb2c67915, 0xc67178f2, 0xe372532b, - 0xca273ece, 0xea26619c, 0xd186b8c7, 0x21c0c207, - 0xeada7dd6, 0xcde0eb1e, 0xf57d4f7f, 0xee6ed178, - 0x06f067aa, 0x72176fba, 0x0a637dc5, 0xa2c898a6, - 0x113f9804, 0xbef90dae, 0x1b710b35, 0x131c471b, - 0x28db77f5, 0x23047d84, 0x32caab7b, 0x40c72493, - 0x3c9ebe0a, 0x15c9bebc, 0x431d67c4, 0x9c100d4c, - 0x4cc5d4be, 0xcb3e42b6, 0x597f299c, 0xfc657e2a, - 0x5fcb6fab, 0x3ad6faec, 0x6c44198c, 0x4a475817 -]; + if (mode !== 'mod') { + div = res.div.neg(); + } -function SHA512() { - if (!(this instanceof SHA512)) - return new SHA512(); + return { + div: div, + mod: res.mod + }; + } - BlockHash.call(this); - this.h = [ - 0x6a09e667, 0xf3bcc908, - 0xbb67ae85, 0x84caa73b, - 0x3c6ef372, 0xfe94f82b, - 0xa54ff53a, 0x5f1d36f1, - 0x510e527f, 0xade682d1, - 0x9b05688c, 0x2b3e6c1f, - 0x1f83d9ab, 0xfb41bd6b, - 0x5be0cd19, 0x137e2179 ]; - this.k = sha512_K; - this.W = new Array(160); -} -utils.inherits(SHA512, BlockHash); -module.exports = SHA512; + if ((this.negative & num.negative) !== 0) { + res = this.neg().divmod(num.neg(), mode); -SHA512.blockSize = 1024; -SHA512.outSize = 512; -SHA512.hmacStrength = 192; -SHA512.padLength = 128; + if (mode !== 'div') { + mod = res.mod.neg(); + if (positive && mod.negative !== 0) { + mod.isub(num); + } + } -SHA512.prototype._prepareBlock = function _prepareBlock(msg, start) { - var W = this.W; + return { + div: res.div, + mod: mod + }; + } - // 32 x 32bit words - for (var i = 0; i < 32; i++) - W[i] = msg[start + i]; - for (; i < W.length; i += 2) { - var c0_hi = g1_512_hi(W[i - 4], W[i - 3]); // i - 2 - var c0_lo = g1_512_lo(W[i - 4], W[i - 3]); - var c1_hi = W[i - 14]; // i - 7 - var c1_lo = W[i - 13]; - var c2_hi = g0_512_hi(W[i - 30], W[i - 29]); // i - 15 - var c2_lo = g0_512_lo(W[i - 30], W[i - 29]); - var c3_hi = W[i - 32]; // i - 16 - var c3_lo = W[i - 31]; + // Both numbers are positive at this point - W[i] = sum64_4_hi( - c0_hi, c0_lo, - c1_hi, c1_lo, - c2_hi, c2_lo, - c3_hi, c3_lo); - W[i + 1] = sum64_4_lo( - c0_hi, c0_lo, - c1_hi, c1_lo, - c2_hi, c2_lo, - c3_hi, c3_lo); - } -}; + // Strip both numbers to approximate shift value + if (num.length > this.length || this.cmp(num) < 0) { + return { + div: new BN(0), + mod: this + }; + } -SHA512.prototype._update = function _update(msg, start) { - this._prepareBlock(msg, start); + // Very short reduction + if (num.length === 1) { + if (mode === 'div') { + return { + div: this.divn(num.words[0]), + mod: null + }; + } - var W = this.W; + if (mode === 'mod') { + return { + div: null, + mod: new BN(this.modn(num.words[0])) + }; + } - var ah = this.h[0]; - var al = this.h[1]; - var bh = this.h[2]; - var bl = this.h[3]; - var ch = this.h[4]; - var cl = this.h[5]; - var dh = this.h[6]; - var dl = this.h[7]; - var eh = this.h[8]; - var el = this.h[9]; - var fh = this.h[10]; - var fl = this.h[11]; - var gh = this.h[12]; - var gl = this.h[13]; - var hh = this.h[14]; - var hl = this.h[15]; + return { + div: this.divn(num.words[0]), + mod: new BN(this.modn(num.words[0])) + }; + } - assert(this.k.length === W.length); - for (var i = 0; i < W.length; i += 2) { - var c0_hi = hh; - var c0_lo = hl; - var c1_hi = s1_512_hi(eh, el); - var c1_lo = s1_512_lo(eh, el); - var c2_hi = ch64_hi(eh, el, fh, fl, gh, gl); - var c2_lo = ch64_lo(eh, el, fh, fl, gh, gl); - var c3_hi = this.k[i]; - var c3_lo = this.k[i + 1]; - var c4_hi = W[i]; - var c4_lo = W[i + 1]; + return this._wordDiv(num, mode); + }; - var T1_hi = sum64_5_hi( - c0_hi, c0_lo, - c1_hi, c1_lo, - c2_hi, c2_lo, - c3_hi, c3_lo, - c4_hi, c4_lo); - var T1_lo = sum64_5_lo( - c0_hi, c0_lo, - c1_hi, c1_lo, - c2_hi, c2_lo, - c3_hi, c3_lo, - c4_hi, c4_lo); + // Find `this` / `num` + BN.prototype.div = function div (num) { + return this.divmod(num, 'div', false).div; + }; - c0_hi = s0_512_hi(ah, al); - c0_lo = s0_512_lo(ah, al); - c1_hi = maj64_hi(ah, al, bh, bl, ch, cl); - c1_lo = maj64_lo(ah, al, bh, bl, ch, cl); + // Find `this` % `num` + BN.prototype.mod = function mod (num) { + return this.divmod(num, 'mod', false).mod; + }; - var T2_hi = sum64_hi(c0_hi, c0_lo, c1_hi, c1_lo); - var T2_lo = sum64_lo(c0_hi, c0_lo, c1_hi, c1_lo); + BN.prototype.umod = function umod (num) { + return this.divmod(num, 'mod', true).mod; + }; - hh = gh; - hl = gl; + // Find Round(`this` / `num`) + BN.prototype.divRound = function divRound (num) { + var dm = this.divmod(num); - gh = fh; - gl = fl; + // Fast case - exact division + if (dm.mod.isZero()) return dm.div; - fh = eh; - fl = el; + var mod = dm.div.negative !== 0 ? dm.mod.isub(num) : dm.mod; - eh = sum64_hi(dh, dl, T1_hi, T1_lo); - el = sum64_lo(dl, dl, T1_hi, T1_lo); + var half = num.ushrn(1); + var r2 = num.andln(1); + var cmp = mod.cmp(half); - dh = ch; - dl = cl; + // Round down + if (cmp < 0 || r2 === 1 && cmp === 0) return dm.div; - ch = bh; - cl = bl; + // Round up + return dm.div.negative !== 0 ? dm.div.isubn(1) : dm.div.iaddn(1); + }; - bh = ah; - bl = al; + BN.prototype.modn = function modn (num) { + assert(num <= 0x3ffffff); + var p = (1 << 26) % num; - ah = sum64_hi(T1_hi, T1_lo, T2_hi, T2_lo); - al = sum64_lo(T1_hi, T1_lo, T2_hi, T2_lo); - } + var acc = 0; + for (var i = this.length - 1; i >= 0; i--) { + acc = (p * acc + (this.words[i] | 0)) % num; + } - sum64(this.h, 0, ah, al); - sum64(this.h, 2, bh, bl); - sum64(this.h, 4, ch, cl); - sum64(this.h, 6, dh, dl); - sum64(this.h, 8, eh, el); - sum64(this.h, 10, fh, fl); - sum64(this.h, 12, gh, gl); - sum64(this.h, 14, hh, hl); -}; + return acc; + }; -SHA512.prototype._digest = function digest(enc) { - if (enc === 'hex') - return utils.toHex32(this.h, 'big'); - else - return utils.split32(this.h, 'big'); -}; + // In-place division by number + BN.prototype.idivn = function idivn (num) { + assert(num <= 0x3ffffff); -function ch64_hi(xh, xl, yh, yl, zh) { - var r = (xh & yh) ^ ((~xh) & zh); - if (r < 0) - r += 0x100000000; - return r; -} + var carry = 0; + for (var i = this.length - 1; i >= 0; i--) { + var w = (this.words[i] | 0) + carry * 0x4000000; + this.words[i] = (w / num) | 0; + carry = w % num; + } -function ch64_lo(xh, xl, yh, yl, zh, zl) { - var r = (xl & yl) ^ ((~xl) & zl); - if (r < 0) - r += 0x100000000; - return r; -} + return this.strip(); + }; -function maj64_hi(xh, xl, yh, yl, zh) { - var r = (xh & yh) ^ (xh & zh) ^ (yh & zh); - if (r < 0) - r += 0x100000000; - return r; -} + BN.prototype.divn = function divn (num) { + return this.clone().idivn(num); + }; -function maj64_lo(xh, xl, yh, yl, zh, zl) { - var r = (xl & yl) ^ (xl & zl) ^ (yl & zl); - if (r < 0) - r += 0x100000000; - return r; -} + BN.prototype.egcd = function egcd (p) { + assert(p.negative === 0); + assert(!p.isZero()); -function s0_512_hi(xh, xl) { - var c0_hi = rotr64_hi(xh, xl, 28); - var c1_hi = rotr64_hi(xl, xh, 2); // 34 - var c2_hi = rotr64_hi(xl, xh, 7); // 39 + var x = this; + var y = p.clone(); - var r = c0_hi ^ c1_hi ^ c2_hi; - if (r < 0) - r += 0x100000000; - return r; -} + if (x.negative !== 0) { + x = x.umod(p); + } else { + x = x.clone(); + } -function s0_512_lo(xh, xl) { - var c0_lo = rotr64_lo(xh, xl, 28); - var c1_lo = rotr64_lo(xl, xh, 2); // 34 - var c2_lo = rotr64_lo(xl, xh, 7); // 39 + // A * x + B * y = x + var A = new BN(1); + var B = new BN(0); - var r = c0_lo ^ c1_lo ^ c2_lo; - if (r < 0) - r += 0x100000000; - return r; -} + // C * x + D * y = y + var C = new BN(0); + var D = new BN(1); -function s1_512_hi(xh, xl) { - var c0_hi = rotr64_hi(xh, xl, 14); - var c1_hi = rotr64_hi(xh, xl, 18); - var c2_hi = rotr64_hi(xl, xh, 9); // 41 + var g = 0; - var r = c0_hi ^ c1_hi ^ c2_hi; - if (r < 0) - r += 0x100000000; - return r; -} + while (x.isEven() && y.isEven()) { + x.iushrn(1); + y.iushrn(1); + ++g; + } -function s1_512_lo(xh, xl) { - var c0_lo = rotr64_lo(xh, xl, 14); - var c1_lo = rotr64_lo(xh, xl, 18); - var c2_lo = rotr64_lo(xl, xh, 9); // 41 + var yp = y.clone(); + var xp = x.clone(); - var r = c0_lo ^ c1_lo ^ c2_lo; - if (r < 0) - r += 0x100000000; - return r; -} + while (!x.isZero()) { + for (var i = 0, im = 1; (x.words[0] & im) === 0 && i < 26; ++i, im <<= 1); + if (i > 0) { + x.iushrn(i); + while (i-- > 0) { + if (A.isOdd() || B.isOdd()) { + A.iadd(yp); + B.isub(xp); + } -function g0_512_hi(xh, xl) { - var c0_hi = rotr64_hi(xh, xl, 1); - var c1_hi = rotr64_hi(xh, xl, 8); - var c2_hi = shr64_hi(xh, xl, 7); + A.iushrn(1); + B.iushrn(1); + } + } - var r = c0_hi ^ c1_hi ^ c2_hi; - if (r < 0) - r += 0x100000000; - return r; -} + for (var j = 0, jm = 1; (y.words[0] & jm) === 0 && j < 26; ++j, jm <<= 1); + if (j > 0) { + y.iushrn(j); + while (j-- > 0) { + if (C.isOdd() || D.isOdd()) { + C.iadd(yp); + D.isub(xp); + } -function g0_512_lo(xh, xl) { - var c0_lo = rotr64_lo(xh, xl, 1); - var c1_lo = rotr64_lo(xh, xl, 8); - var c2_lo = shr64_lo(xh, xl, 7); + C.iushrn(1); + D.iushrn(1); + } + } - var r = c0_lo ^ c1_lo ^ c2_lo; - if (r < 0) - r += 0x100000000; - return r; -} + if (x.cmp(y) >= 0) { + x.isub(y); + A.isub(C); + B.isub(D); + } else { + y.isub(x); + C.isub(A); + D.isub(B); + } + } -function g1_512_hi(xh, xl) { - var c0_hi = rotr64_hi(xh, xl, 19); - var c1_hi = rotr64_hi(xl, xh, 29); // 61 - var c2_hi = shr64_hi(xh, xl, 6); + return { + a: C, + b: D, + gcd: y.iushln(g) + }; + }; - var r = c0_hi ^ c1_hi ^ c2_hi; - if (r < 0) - r += 0x100000000; - return r; -} + // This is reduced incarnation of the binary EEA + // above, designated to invert members of the + // _prime_ fields F(p) at a maximal speed + BN.prototype._invmp = function _invmp (p) { + assert(p.negative === 0); + assert(!p.isZero()); -function g1_512_lo(xh, xl) { - var c0_lo = rotr64_lo(xh, xl, 19); - var c1_lo = rotr64_lo(xl, xh, 29); // 61 - var c2_lo = shr64_lo(xh, xl, 6); + var a = this; + var b = p.clone(); - var r = c0_lo ^ c1_lo ^ c2_lo; - if (r < 0) - r += 0x100000000; - return r; -} + if (a.negative !== 0) { + a = a.umod(p); + } else { + a = a.clone(); + } -},{"../common":91,"../utils":101,"minimalistic-assert":109}],100:[function(require,module,exports){ -'use strict'; + var x1 = new BN(1); + var x2 = new BN(0); -var utils = require('../utils'); -var rotr32 = utils.rotr32; + var delta = b.clone(); -function ft_1(s, x, y, z) { - if (s === 0) - return ch32(x, y, z); - if (s === 1 || s === 3) - return p32(x, y, z); - if (s === 2) - return maj32(x, y, z); -} -exports.ft_1 = ft_1; + while (a.cmpn(1) > 0 && b.cmpn(1) > 0) { + for (var i = 0, im = 1; (a.words[0] & im) === 0 && i < 26; ++i, im <<= 1); + if (i > 0) { + a.iushrn(i); + while (i-- > 0) { + if (x1.isOdd()) { + x1.iadd(delta); + } -function ch32(x, y, z) { - return (x & y) ^ ((~x) & z); -} -exports.ch32 = ch32; + x1.iushrn(1); + } + } -function maj32(x, y, z) { - return (x & y) ^ (x & z) ^ (y & z); -} -exports.maj32 = maj32; + for (var j = 0, jm = 1; (b.words[0] & jm) === 0 && j < 26; ++j, jm <<= 1); + if (j > 0) { + b.iushrn(j); + while (j-- > 0) { + if (x2.isOdd()) { + x2.iadd(delta); + } -function p32(x, y, z) { - return x ^ y ^ z; -} -exports.p32 = p32; + x2.iushrn(1); + } + } -function s0_256(x) { - return rotr32(x, 2) ^ rotr32(x, 13) ^ rotr32(x, 22); -} -exports.s0_256 = s0_256; + if (a.cmp(b) >= 0) { + a.isub(b); + x1.isub(x2); + } else { + b.isub(a); + x2.isub(x1); + } + } -function s1_256(x) { - return rotr32(x, 6) ^ rotr32(x, 11) ^ rotr32(x, 25); -} -exports.s1_256 = s1_256; + var res; + if (a.cmpn(1) === 0) { + res = x1; + } else { + res = x2; + } -function g0_256(x) { - return rotr32(x, 7) ^ rotr32(x, 18) ^ (x >>> 3); -} -exports.g0_256 = g0_256; + if (res.cmpn(0) < 0) { + res.iadd(p); + } -function g1_256(x) { - return rotr32(x, 17) ^ rotr32(x, 19) ^ (x >>> 10); -} -exports.g1_256 = g1_256; + return res; + }; -},{"../utils":101}],101:[function(require,module,exports){ -'use strict'; + BN.prototype.gcd = function gcd (num) { + if (this.isZero()) return num.abs(); + if (num.isZero()) return this.abs(); -var assert = require('minimalistic-assert'); -var inherits = require('inherits'); + var a = this.clone(); + var b = num.clone(); + a.negative = 0; + b.negative = 0; -exports.inherits = inherits; + // Remove common factor of two + for (var shift = 0; a.isEven() && b.isEven(); shift++) { + a.iushrn(1); + b.iushrn(1); + } -function toArray(msg, enc) { - if (Array.isArray(msg)) - return msg.slice(); - if (!msg) - return []; - var res = []; - if (typeof msg === 'string') { - if (!enc) { - for (var i = 0; i < msg.length; i++) { - var c = msg.charCodeAt(i); - var hi = c >> 8; - var lo = c & 0xff; - if (hi) - res.push(hi, lo); - else - res.push(lo); + do { + while (a.isEven()) { + a.iushrn(1); + } + while (b.isEven()) { + b.iushrn(1); } - } else if (enc === 'hex') { - msg = msg.replace(/[^a-z0-9]+/ig, ''); - if (msg.length % 2 !== 0) - msg = '0' + msg; - for (i = 0; i < msg.length; i += 2) - res.push(parseInt(msg[i] + msg[i + 1], 16)); - } - } else { - for (i = 0; i < msg.length; i++) - res[i] = msg[i] | 0; - } - return res; -} -exports.toArray = toArray; -function toHex(msg) { - var res = ''; - for (var i = 0; i < msg.length; i++) - res += zero2(msg[i].toString(16)); - return res; -} -exports.toHex = toHex; + var r = a.cmp(b); + if (r < 0) { + // Swap `a` and `b` to make `a` always bigger than `b` + var t = a; + a = b; + b = t; + } else if (r === 0 || b.cmpn(1) === 0) { + break; + } -function htonl(w) { - var res = (w >>> 24) | - ((w >>> 8) & 0xff00) | - ((w << 8) & 0xff0000) | - ((w & 0xff) << 24); - return res >>> 0; -} -exports.htonl = htonl; + a.isub(b); + } while (true); -function toHex32(msg, endian) { - var res = ''; - for (var i = 0; i < msg.length; i++) { - var w = msg[i]; - if (endian === 'little') - w = htonl(w); - res += zero8(w.toString(16)); - } - return res; -} -exports.toHex32 = toHex32; + return b.iushln(shift); + }; -function zero2(word) { - if (word.length === 1) - return '0' + word; - else - return word; -} -exports.zero2 = zero2; + // Invert number in the field F(num) + BN.prototype.invm = function invm (num) { + return this.egcd(num).a.umod(num); + }; -function zero8(word) { - if (word.length === 7) - return '0' + word; - else if (word.length === 6) - return '00' + word; - else if (word.length === 5) - return '000' + word; - else if (word.length === 4) - return '0000' + word; - else if (word.length === 3) - return '00000' + word; - else if (word.length === 2) - return '000000' + word; - else if (word.length === 1) - return '0000000' + word; - else - return word; -} -exports.zero8 = zero8; + BN.prototype.isEven = function isEven () { + return (this.words[0] & 1) === 0; + }; -function join32(msg, start, end, endian) { - var len = end - start; - assert(len % 4 === 0); - var res = new Array(len / 4); - for (var i = 0, k = start; i < res.length; i++, k += 4) { - var w; - if (endian === 'big') - w = (msg[k] << 24) | (msg[k + 1] << 16) | (msg[k + 2] << 8) | msg[k + 3]; - else - w = (msg[k + 3] << 24) | (msg[k + 2] << 16) | (msg[k + 1] << 8) | msg[k]; - res[i] = w >>> 0; - } - return res; -} -exports.join32 = join32; + BN.prototype.isOdd = function isOdd () { + return (this.words[0] & 1) === 1; + }; -function split32(msg, endian) { - var res = new Array(msg.length * 4); - for (var i = 0, k = 0; i < msg.length; i++, k += 4) { - var m = msg[i]; - if (endian === 'big') { - res[k] = m >>> 24; - res[k + 1] = (m >>> 16) & 0xff; - res[k + 2] = (m >>> 8) & 0xff; - res[k + 3] = m & 0xff; - } else { - res[k + 3] = m >>> 24; - res[k + 2] = (m >>> 16) & 0xff; - res[k + 1] = (m >>> 8) & 0xff; - res[k] = m & 0xff; + // And first word and num + BN.prototype.andln = function andln (num) { + return this.words[0] & num; + }; + + // Increment at the bit position in-line + BN.prototype.bincn = function bincn (bit) { + assert(typeof bit === 'number'); + var r = bit % 26; + var s = (bit - r) / 26; + var q = 1 << r; + + // Fast case: bit is much higher than all existing words + if (this.length <= s) { + this._expand(s + 1); + this.words[s] |= q; + return this; } - } - return res; -} -exports.split32 = split32; -function rotr32(w, b) { - return (w >>> b) | (w << (32 - b)); -} -exports.rotr32 = rotr32; + // Add bit and propagate, if needed + var carry = q; + for (var i = s; carry !== 0 && i < this.length; i++) { + var w = this.words[i] | 0; + w += carry; + carry = w >>> 26; + w &= 0x3ffffff; + this.words[i] = w; + } + if (carry !== 0) { + this.words[i] = carry; + this.length++; + } + return this; + }; -function rotl32(w, b) { - return (w << b) | (w >>> (32 - b)); -} -exports.rotl32 = rotl32; + BN.prototype.isZero = function isZero () { + return this.length === 1 && this.words[0] === 0; + }; -function sum32(a, b) { - return (a + b) >>> 0; -} -exports.sum32 = sum32; + BN.prototype.cmpn = function cmpn (num) { + var negative = num < 0; -function sum32_3(a, b, c) { - return (a + b + c) >>> 0; -} -exports.sum32_3 = sum32_3; + if (this.negative !== 0 && !negative) return -1; + if (this.negative === 0 && negative) return 1; -function sum32_4(a, b, c, d) { - return (a + b + c + d) >>> 0; -} -exports.sum32_4 = sum32_4; + this.strip(); -function sum32_5(a, b, c, d, e) { - return (a + b + c + d + e) >>> 0; -} -exports.sum32_5 = sum32_5; + var res; + if (this.length > 1) { + res = 1; + } else { + if (negative) { + num = -num; + } -function sum64(buf, pos, ah, al) { - var bh = buf[pos]; - var bl = buf[pos + 1]; + assert(num <= 0x3ffffff, 'Number is too big'); - var lo = (al + bl) >>> 0; - var hi = (lo < al ? 1 : 0) + ah + bh; - buf[pos] = hi >>> 0; - buf[pos + 1] = lo; -} -exports.sum64 = sum64; - -function sum64_hi(ah, al, bh, bl) { - var lo = (al + bl) >>> 0; - var hi = (lo < al ? 1 : 0) + ah + bh; - return hi >>> 0; -} -exports.sum64_hi = sum64_hi; - -function sum64_lo(ah, al, bh, bl) { - var lo = al + bl; - return lo >>> 0; -} -exports.sum64_lo = sum64_lo; - -function sum64_4_hi(ah, al, bh, bl, ch, cl, dh, dl) { - var carry = 0; - var lo = al; - lo = (lo + bl) >>> 0; - carry += lo < al ? 1 : 0; - lo = (lo + cl) >>> 0; - carry += lo < cl ? 1 : 0; - lo = (lo + dl) >>> 0; - carry += lo < dl ? 1 : 0; + var w = this.words[0] | 0; + res = w === num ? 0 : w < num ? -1 : 1; + } + if (this.negative !== 0) return -res | 0; + return res; + }; - var hi = ah + bh + ch + dh + carry; - return hi >>> 0; -} -exports.sum64_4_hi = sum64_4_hi; + // Compare two numbers and return: + // 1 - if `this` > `num` + // 0 - if `this` == `num` + // -1 - if `this` < `num` + BN.prototype.cmp = function cmp (num) { + if (this.negative !== 0 && num.negative === 0) return -1; + if (this.negative === 0 && num.negative !== 0) return 1; -function sum64_4_lo(ah, al, bh, bl, ch, cl, dh, dl) { - var lo = al + bl + cl + dl; - return lo >>> 0; -} -exports.sum64_4_lo = sum64_4_lo; + var res = this.ucmp(num); + if (this.negative !== 0) return -res | 0; + return res; + }; -function sum64_5_hi(ah, al, bh, bl, ch, cl, dh, dl, eh, el) { - var carry = 0; - var lo = al; - lo = (lo + bl) >>> 0; - carry += lo < al ? 1 : 0; - lo = (lo + cl) >>> 0; - carry += lo < cl ? 1 : 0; - lo = (lo + dl) >>> 0; - carry += lo < dl ? 1 : 0; - lo = (lo + el) >>> 0; - carry += lo < el ? 1 : 0; + // Unsigned comparison + BN.prototype.ucmp = function ucmp (num) { + // At this point both numbers have the same sign + if (this.length > num.length) return 1; + if (this.length < num.length) return -1; - var hi = ah + bh + ch + dh + eh + carry; - return hi >>> 0; -} -exports.sum64_5_hi = sum64_5_hi; + var res = 0; + for (var i = this.length - 1; i >= 0; i--) { + var a = this.words[i] | 0; + var b = num.words[i] | 0; -function sum64_5_lo(ah, al, bh, bl, ch, cl, dh, dl, eh, el) { - var lo = al + bl + cl + dl + el; + if (a === b) continue; + if (a < b) { + res = -1; + } else if (a > b) { + res = 1; + } + break; + } + return res; + }; - return lo >>> 0; -} -exports.sum64_5_lo = sum64_5_lo; + BN.prototype.gtn = function gtn (num) { + return this.cmpn(num) === 1; + }; -function rotr64_hi(ah, al, num) { - var r = (al << (32 - num)) | (ah >>> num); - return r >>> 0; -} -exports.rotr64_hi = rotr64_hi; + BN.prototype.gt = function gt (num) { + return this.cmp(num) === 1; + }; -function rotr64_lo(ah, al, num) { - var r = (ah << (32 - num)) | (al >>> num); - return r >>> 0; -} -exports.rotr64_lo = rotr64_lo; + BN.prototype.gten = function gten (num) { + return this.cmpn(num) >= 0; + }; -function shr64_hi(ah, al, num) { - return ah >>> num; -} -exports.shr64_hi = shr64_hi; + BN.prototype.gte = function gte (num) { + return this.cmp(num) >= 0; + }; -function shr64_lo(ah, al, num) { - var r = (ah << (32 - num)) | (al >>> num); - return r >>> 0; -} -exports.shr64_lo = shr64_lo; + BN.prototype.ltn = function ltn (num) { + return this.cmpn(num) === -1; + }; -},{"inherits":104,"minimalistic-assert":109}],102:[function(require,module,exports){ -'use strict'; + BN.prototype.lt = function lt (num) { + return this.cmp(num) === -1; + }; -var hash = require('hash.js'); -var utils = require('minimalistic-crypto-utils'); -var assert = require('minimalistic-assert'); + BN.prototype.lten = function lten (num) { + return this.cmpn(num) <= 0; + }; -function HmacDRBG(options) { - if (!(this instanceof HmacDRBG)) - return new HmacDRBG(options); - this.hash = options.hash; - this.predResist = !!options.predResist; + BN.prototype.lte = function lte (num) { + return this.cmp(num) <= 0; + }; - this.outLen = this.hash.outSize; - this.minEntropy = options.minEntropy || this.hash.hmacStrength; + BN.prototype.eqn = function eqn (num) { + return this.cmpn(num) === 0; + }; - this._reseed = null; - this.reseedInterval = null; - this.K = null; - this.V = null; + BN.prototype.eq = function eq (num) { + return this.cmp(num) === 0; + }; - var entropy = utils.toArray(options.entropy, options.entropyEnc || 'hex'); - var nonce = utils.toArray(options.nonce, options.nonceEnc || 'hex'); - var pers = utils.toArray(options.pers, options.persEnc || 'hex'); - assert(entropy.length >= (this.minEntropy / 8), - 'Not enough entropy. Minimum is: ' + this.minEntropy + ' bits'); - this._init(entropy, nonce, pers); -} -module.exports = HmacDRBG; + // + // A reduce context, could be using montgomery or something better, depending + // on the `m` itself. + // + BN.red = function red (num) { + return new Red(num); + }; -HmacDRBG.prototype._init = function init(entropy, nonce, pers) { - var seed = entropy.concat(nonce).concat(pers); + BN.prototype.toRed = function toRed (ctx) { + assert(!this.red, 'Already a number in reduction context'); + assert(this.negative === 0, 'red works only with positives'); + return ctx.convertTo(this)._forceRed(ctx); + }; - this.K = new Array(this.outLen / 8); - this.V = new Array(this.outLen / 8); - for (var i = 0; i < this.V.length; i++) { - this.K[i] = 0x00; - this.V[i] = 0x01; - } + BN.prototype.fromRed = function fromRed () { + assert(this.red, 'fromRed works only with numbers in reduction context'); + return this.red.convertFrom(this); + }; - this._update(seed); - this._reseed = 1; - this.reseedInterval = 0x1000000000000; // 2^48 -}; + BN.prototype._forceRed = function _forceRed (ctx) { + this.red = ctx; + return this; + }; -HmacDRBG.prototype._hmac = function hmac() { - return new hash.hmac(this.hash, this.K); -}; + BN.prototype.forceRed = function forceRed (ctx) { + assert(!this.red, 'Already a number in reduction context'); + return this._forceRed(ctx); + }; -HmacDRBG.prototype._update = function update(seed) { - var kmac = this._hmac() - .update(this.V) - .update([ 0x00 ]); - if (seed) - kmac = kmac.update(seed); - this.K = kmac.digest(); - this.V = this._hmac().update(this.V).digest(); - if (!seed) - return; + BN.prototype.redAdd = function redAdd (num) { + assert(this.red, 'redAdd works only with red numbers'); + return this.red.add(this, num); + }; - this.K = this._hmac() - .update(this.V) - .update([ 0x01 ]) - .update(seed) - .digest(); - this.V = this._hmac().update(this.V).digest(); -}; + BN.prototype.redIAdd = function redIAdd (num) { + assert(this.red, 'redIAdd works only with red numbers'); + return this.red.iadd(this, num); + }; -HmacDRBG.prototype.reseed = function reseed(entropy, entropyEnc, add, addEnc) { - // Optional entropy enc - if (typeof entropyEnc !== 'string') { - addEnc = add; - add = entropyEnc; - entropyEnc = null; - } + BN.prototype.redSub = function redSub (num) { + assert(this.red, 'redSub works only with red numbers'); + return this.red.sub(this, num); + }; - entropy = utils.toArray(entropy, entropyEnc); - add = utils.toArray(add, addEnc); + BN.prototype.redISub = function redISub (num) { + assert(this.red, 'redISub works only with red numbers'); + return this.red.isub(this, num); + }; - assert(entropy.length >= (this.minEntropy / 8), - 'Not enough entropy. Minimum is: ' + this.minEntropy + ' bits'); + BN.prototype.redShl = function redShl (num) { + assert(this.red, 'redShl works only with red numbers'); + return this.red.shl(this, num); + }; - this._update(entropy.concat(add || [])); - this._reseed = 1; -}; + BN.prototype.redMul = function redMul (num) { + assert(this.red, 'redMul works only with red numbers'); + this.red._verify2(this, num); + return this.red.mul(this, num); + }; -HmacDRBG.prototype.generate = function generate(len, enc, add, addEnc) { - if (this._reseed > this.reseedInterval) - throw new Error('Reseed is required'); + BN.prototype.redIMul = function redIMul (num) { + assert(this.red, 'redMul works only with red numbers'); + this.red._verify2(this, num); + return this.red.imul(this, num); + }; - // Optional encoding - if (typeof enc !== 'string') { - addEnc = add; - add = enc; - enc = null; - } + BN.prototype.redSqr = function redSqr () { + assert(this.red, 'redSqr works only with red numbers'); + this.red._verify1(this); + return this.red.sqr(this); + }; - // Optional additional data - if (add) { - add = utils.toArray(add, addEnc || 'hex'); - this._update(add); - } + BN.prototype.redISqr = function redISqr () { + assert(this.red, 'redISqr works only with red numbers'); + this.red._verify1(this); + return this.red.isqr(this); + }; - var temp = []; - while (temp.length < len) { - this.V = this._hmac().update(this.V).digest(); - temp = temp.concat(this.V); - } + // Square root over p + BN.prototype.redSqrt = function redSqrt () { + assert(this.red, 'redSqrt works only with red numbers'); + this.red._verify1(this); + return this.red.sqrt(this); + }; - var res = temp.slice(0, len); - this._update(add); - this._reseed++; - return utils.encode(res, enc); -}; + BN.prototype.redInvm = function redInvm () { + assert(this.red, 'redInvm works only with red numbers'); + this.red._verify1(this); + return this.red.invm(this); + }; -},{"hash.js":90,"minimalistic-assert":109,"minimalistic-crypto-utils":110}],103:[function(require,module,exports){ -exports.read = function (buffer, offset, isLE, mLen, nBytes) { - var e, m - var eLen = (nBytes * 8) - mLen - 1 - var eMax = (1 << eLen) - 1 - var eBias = eMax >> 1 - var nBits = -7 - var i = isLE ? (nBytes - 1) : 0 - var d = isLE ? -1 : 1 - var s = buffer[offset + i] + // Return negative clone of `this` % `red modulo` + BN.prototype.redNeg = function redNeg () { + assert(this.red, 'redNeg works only with red numbers'); + this.red._verify1(this); + return this.red.neg(this); + }; - i += d + BN.prototype.redPow = function redPow (num) { + assert(this.red && !num.red, 'redPow(normalNum)'); + this.red._verify1(this); + return this.red.pow(this, num); + }; - e = s & ((1 << (-nBits)) - 1) - s >>= (-nBits) - nBits += eLen - for (; nBits > 0; e = (e * 256) + buffer[offset + i], i += d, nBits -= 8) {} + // Prime numbers with efficient reduction + var primes = { + k256: null, + p224: null, + p192: null, + p25519: null + }; - m = e & ((1 << (-nBits)) - 1) - e >>= (-nBits) - nBits += mLen - for (; nBits > 0; m = (m * 256) + buffer[offset + i], i += d, nBits -= 8) {} + // Pseudo-Mersenne prime + function MPrime (name, p) { + // P = 2 ^ N - K + this.name = name; + this.p = new BN(p, 16); + this.n = this.p.bitLength(); + this.k = new BN(1).iushln(this.n).isub(this.p); - if (e === 0) { - e = 1 - eBias - } else if (e === eMax) { - return m ? NaN : ((s ? -1 : 1) * Infinity) - } else { - m = m + Math.pow(2, mLen) - e = e - eBias + this.tmp = this._tmp(); } - return (s ? -1 : 1) * m * Math.pow(2, e - mLen) -} -exports.write = function (buffer, value, offset, isLE, mLen, nBytes) { - var e, m, c - var eLen = (nBytes * 8) - mLen - 1 - var eMax = (1 << eLen) - 1 - var eBias = eMax >> 1 - var rt = (mLen === 23 ? Math.pow(2, -24) - Math.pow(2, -77) : 0) - var i = isLE ? 0 : (nBytes - 1) - var d = isLE ? 1 : -1 - var s = value < 0 || (value === 0 && 1 / value < 0) ? 1 : 0 + MPrime.prototype._tmp = function _tmp () { + var tmp = new BN(null); + tmp.words = new Array(Math.ceil(this.n / 13)); + return tmp; + }; - value = Math.abs(value) + MPrime.prototype.ireduce = function ireduce (num) { + // Assumes that `num` is less than `P^2` + // num = HI * (2 ^ N - K) + HI * K + LO = HI * K + LO (mod P) + var r = num; + var rlen; - if (isNaN(value) || value === Infinity) { - m = isNaN(value) ? 1 : 0 - e = eMax - } else { - e = Math.floor(Math.log(value) / Math.LN2) - if (value * (c = Math.pow(2, -e)) < 1) { - e-- - c *= 2 - } - if (e + eBias >= 1) { - value += rt / c - } else { - value += rt * Math.pow(2, 1 - eBias) - } - if (value * c >= 2) { - e++ - c /= 2 - } + do { + this.split(r, this.tmp); + r = this.imulK(r); + r = r.iadd(this.tmp); + rlen = r.bitLength(); + } while (rlen > this.n); - if (e + eBias >= eMax) { - m = 0 - e = eMax - } else if (e + eBias >= 1) { - m = ((value * c) - 1) * Math.pow(2, mLen) - e = e + eBias + var cmp = rlen < this.n ? -1 : r.ucmp(this.p); + if (cmp === 0) { + r.words[0] = 0; + r.length = 1; + } else if (cmp > 0) { + r.isub(this.p); } else { - m = value * Math.pow(2, eBias - 1) * Math.pow(2, mLen) - e = 0 + r.strip(); } - } - for (; mLen >= 8; buffer[offset + i] = m & 0xff, i += d, m /= 256, mLen -= 8) {} - - e = (e << mLen) | m - eLen += mLen - for (; eLen > 0; buffer[offset + i] = e & 0xff, i += d, e /= 256, eLen -= 8) {} - - buffer[offset + i - d] |= s * 128 -} + return r; + }; -},{}],104:[function(require,module,exports){ -arguments[4][16][0].apply(exports,arguments) -},{"dup":16}],105:[function(require,module,exports){ -/*! - * Determine if an object is a Buffer - * - * @author Feross Aboukhadijeh - * @license MIT - */ + MPrime.prototype.split = function split (input, out) { + input.iushrn(this.n, 0, out); + }; -// The _isBuffer check is for Safari 5-7 support, because it's missing -// Object.prototype.constructor. Remove this eventually -module.exports = function (obj) { - return obj != null && (isBuffer(obj) || isSlowBuffer(obj) || !!obj._isBuffer) -} + MPrime.prototype.imulK = function imulK (num) { + return num.imul(this.k); + }; -function isBuffer (obj) { - return !!obj.constructor && typeof obj.constructor.isBuffer === 'function' && obj.constructor.isBuffer(obj) -} + function K256 () { + MPrime.call( + this, + 'k256', + 'ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff fffffffe fffffc2f'); + } + inherits(K256, MPrime); -// For Node v0.10 support. Remove this eventually. -function isSlowBuffer (obj) { - return typeof obj.readFloatLE === 'function' && typeof obj.slice === 'function' && isBuffer(obj.slice(0, 0)) -} + K256.prototype.split = function split (input, output) { + // 256 = 9 * 26 + 22 + var mask = 0x3fffff; -},{}],106:[function(require,module,exports){ -var toString = {}.toString; + var outLen = Math.min(input.length, 9); + for (var i = 0; i < outLen; i++) { + output.words[i] = input.words[i]; + } + output.length = outLen; -module.exports = Array.isArray || function (arr) { - return toString.call(arr) == '[object Array]'; -}; + if (input.length <= 9) { + input.words[0] = 0; + input.length = 1; + return; + } -},{}],107:[function(require,module,exports){ -'use strict' -var inherits = require('inherits') -var HashBase = require('hash-base') -var Buffer = require('safe-buffer').Buffer + // Shift by 9 limbs + var prev = input.words[9]; + output.words[output.length++] = prev & mask; -var ARRAY16 = new Array(16) + for (i = 10; i < input.length; i++) { + var next = input.words[i] | 0; + input.words[i - 10] = ((next & mask) << 4) | (prev >>> 22); + prev = next; + } + prev >>>= 22; + input.words[i - 10] = prev; + if (prev === 0 && input.length > 10) { + input.length -= 10; + } else { + input.length -= 9; + } + }; -function MD5 () { - HashBase.call(this, 64) + K256.prototype.imulK = function imulK (num) { + // K = 0x1000003d1 = [ 0x40, 0x3d1 ] + num.words[num.length] = 0; + num.words[num.length + 1] = 0; + num.length += 2; - // state - this._a = 0x67452301 - this._b = 0xefcdab89 - this._c = 0x98badcfe - this._d = 0x10325476 -} + // bounded at: 0x40 * 0x3ffffff + 0x3d0 = 0x100000390 + var lo = 0; + for (var i = 0; i < num.length; i++) { + var w = num.words[i] | 0; + lo += w * 0x3d1; + num.words[i] = lo & 0x3ffffff; + lo = w * 0x40 + ((lo / 0x4000000) | 0); + } -inherits(MD5, HashBase) + // Fast length reduction + if (num.words[num.length - 1] === 0) { + num.length--; + if (num.words[num.length - 1] === 0) { + num.length--; + } + } + return num; + }; -MD5.prototype._update = function () { - var M = ARRAY16 - for (var i = 0; i < 16; ++i) M[i] = this._block.readInt32LE(i * 4) + function P224 () { + MPrime.call( + this, + 'p224', + 'ffffffff ffffffff ffffffff ffffffff 00000000 00000000 00000001'); + } + inherits(P224, MPrime); - var a = this._a - var b = this._b - var c = this._c - var d = this._d + function P192 () { + MPrime.call( + this, + 'p192', + 'ffffffff ffffffff ffffffff fffffffe ffffffff ffffffff'); + } + inherits(P192, MPrime); - a = fnF(a, b, c, d, M[0], 0xd76aa478, 7) - d = fnF(d, a, b, c, M[1], 0xe8c7b756, 12) - c = fnF(c, d, a, b, M[2], 0x242070db, 17) - b = fnF(b, c, d, a, M[3], 0xc1bdceee, 22) - a = fnF(a, b, c, d, M[4], 0xf57c0faf, 7) - d = fnF(d, a, b, c, M[5], 0x4787c62a, 12) - c = fnF(c, d, a, b, M[6], 0xa8304613, 17) - b = fnF(b, c, d, a, M[7], 0xfd469501, 22) - a = fnF(a, b, c, d, M[8], 0x698098d8, 7) - d = fnF(d, a, b, c, M[9], 0x8b44f7af, 12) - c = fnF(c, d, a, b, M[10], 0xffff5bb1, 17) - b = fnF(b, c, d, a, M[11], 0x895cd7be, 22) - a = fnF(a, b, c, d, M[12], 0x6b901122, 7) - d = fnF(d, a, b, c, M[13], 0xfd987193, 12) - c = fnF(c, d, a, b, M[14], 0xa679438e, 17) - b = fnF(b, c, d, a, M[15], 0x49b40821, 22) + function P25519 () { + // 2 ^ 255 - 19 + MPrime.call( + this, + '25519', + '7fffffffffffffff ffffffffffffffff ffffffffffffffff ffffffffffffffed'); + } + inherits(P25519, MPrime); - a = fnG(a, b, c, d, M[1], 0xf61e2562, 5) - d = fnG(d, a, b, c, M[6], 0xc040b340, 9) - c = fnG(c, d, a, b, M[11], 0x265e5a51, 14) - b = fnG(b, c, d, a, M[0], 0xe9b6c7aa, 20) - a = fnG(a, b, c, d, M[5], 0xd62f105d, 5) - d = fnG(d, a, b, c, M[10], 0x02441453, 9) - c = fnG(c, d, a, b, M[15], 0xd8a1e681, 14) - b = fnG(b, c, d, a, M[4], 0xe7d3fbc8, 20) - a = fnG(a, b, c, d, M[9], 0x21e1cde6, 5) - d = fnG(d, a, b, c, M[14], 0xc33707d6, 9) - c = fnG(c, d, a, b, M[3], 0xf4d50d87, 14) - b = fnG(b, c, d, a, M[8], 0x455a14ed, 20) - a = fnG(a, b, c, d, M[13], 0xa9e3e905, 5) - d = fnG(d, a, b, c, M[2], 0xfcefa3f8, 9) - c = fnG(c, d, a, b, M[7], 0x676f02d9, 14) - b = fnG(b, c, d, a, M[12], 0x8d2a4c8a, 20) + P25519.prototype.imulK = function imulK (num) { + // K = 0x13 + var carry = 0; + for (var i = 0; i < num.length; i++) { + var hi = (num.words[i] | 0) * 0x13 + carry; + var lo = hi & 0x3ffffff; + hi >>>= 26; - a = fnH(a, b, c, d, M[5], 0xfffa3942, 4) - d = fnH(d, a, b, c, M[8], 0x8771f681, 11) - c = fnH(c, d, a, b, M[11], 0x6d9d6122, 16) - b = fnH(b, c, d, a, M[14], 0xfde5380c, 23) - a = fnH(a, b, c, d, M[1], 0xa4beea44, 4) - d = fnH(d, a, b, c, M[4], 0x4bdecfa9, 11) - c = fnH(c, d, a, b, M[7], 0xf6bb4b60, 16) - b = fnH(b, c, d, a, M[10], 0xbebfbc70, 23) - a = fnH(a, b, c, d, M[13], 0x289b7ec6, 4) - d = fnH(d, a, b, c, M[0], 0xeaa127fa, 11) - c = fnH(c, d, a, b, M[3], 0xd4ef3085, 16) - b = fnH(b, c, d, a, M[6], 0x04881d05, 23) - a = fnH(a, b, c, d, M[9], 0xd9d4d039, 4) - d = fnH(d, a, b, c, M[12], 0xe6db99e5, 11) - c = fnH(c, d, a, b, M[15], 0x1fa27cf8, 16) - b = fnH(b, c, d, a, M[2], 0xc4ac5665, 23) + num.words[i] = lo; + carry = hi; + } + if (carry !== 0) { + num.words[num.length++] = carry; + } + return num; + }; - a = fnI(a, b, c, d, M[0], 0xf4292244, 6) - d = fnI(d, a, b, c, M[7], 0x432aff97, 10) - c = fnI(c, d, a, b, M[14], 0xab9423a7, 15) - b = fnI(b, c, d, a, M[5], 0xfc93a039, 21) - a = fnI(a, b, c, d, M[12], 0x655b59c3, 6) - d = fnI(d, a, b, c, M[3], 0x8f0ccc92, 10) - c = fnI(c, d, a, b, M[10], 0xffeff47d, 15) - b = fnI(b, c, d, a, M[1], 0x85845dd1, 21) - a = fnI(a, b, c, d, M[8], 0x6fa87e4f, 6) - d = fnI(d, a, b, c, M[15], 0xfe2ce6e0, 10) - c = fnI(c, d, a, b, M[6], 0xa3014314, 15) - b = fnI(b, c, d, a, M[13], 0x4e0811a1, 21) - a = fnI(a, b, c, d, M[4], 0xf7537e82, 6) - d = fnI(d, a, b, c, M[11], 0xbd3af235, 10) - c = fnI(c, d, a, b, M[2], 0x2ad7d2bb, 15) - b = fnI(b, c, d, a, M[9], 0xeb86d391, 21) + // Exported mostly for testing purposes, use plain name instead + BN._prime = function prime (name) { + // Cached version of prime + if (primes[name]) return primes[name]; - this._a = (this._a + a) | 0 - this._b = (this._b + b) | 0 - this._c = (this._c + c) | 0 - this._d = (this._d + d) | 0 -} + var prime; + if (name === 'k256') { + prime = new K256(); + } else if (name === 'p224') { + prime = new P224(); + } else if (name === 'p192') { + prime = new P192(); + } else if (name === 'p25519') { + prime = new P25519(); + } else { + throw new Error('Unknown prime ' + name); + } + primes[name] = prime; -MD5.prototype._digest = function () { - // create padding and handle blocks - this._block[this._blockOffset++] = 0x80 - if (this._blockOffset > 56) { - this._block.fill(0, this._blockOffset, 64) - this._update() - this._blockOffset = 0 + return prime; + }; + + // + // Base reduction engine + // + function Red (m) { + if (typeof m === 'string') { + var prime = BN._prime(m); + this.m = prime.p; + this.prime = prime; + } else { + assert(m.gtn(1), 'modulus must be greater than 1'); + this.m = m; + this.prime = null; + } } - this._block.fill(0, this._blockOffset, 56) - this._block.writeUInt32LE(this._length[0], 56) - this._block.writeUInt32LE(this._length[1], 60) - this._update() + Red.prototype._verify1 = function _verify1 (a) { + assert(a.negative === 0, 'red works only with positives'); + assert(a.red, 'red works only with red numbers'); + }; - // produce result - var buffer = Buffer.allocUnsafe(16) - buffer.writeInt32LE(this._a, 0) - buffer.writeInt32LE(this._b, 4) - buffer.writeInt32LE(this._c, 8) - buffer.writeInt32LE(this._d, 12) - return buffer -} + Red.prototype._verify2 = function _verify2 (a, b) { + assert((a.negative | b.negative) === 0, 'red works only with positives'); + assert(a.red && a.red === b.red, + 'red works only with red numbers'); + }; -function rotl (x, n) { - return (x << n) | (x >>> (32 - n)) -} + Red.prototype.imod = function imod (a) { + if (this.prime) return this.prime.ireduce(a)._forceRed(this); + return a.umod(this.m)._forceRed(this); + }; -function fnF (a, b, c, d, m, k, s) { - return (rotl((a + ((b & c) | ((~b) & d)) + m + k) | 0, s) + b) | 0 -} + Red.prototype.neg = function neg (a) { + if (a.isZero()) { + return a.clone(); + } -function fnG (a, b, c, d, m, k, s) { - return (rotl((a + ((b & d) | (c & (~d))) + m + k) | 0, s) + b) | 0 -} + return this.m.sub(a)._forceRed(this); + }; -function fnH (a, b, c, d, m, k, s) { - return (rotl((a + (b ^ c ^ d) + m + k) | 0, s) + b) | 0 -} + Red.prototype.add = function add (a, b) { + this._verify2(a, b); -function fnI (a, b, c, d, m, k, s) { - return (rotl((a + ((c ^ (b | (~d)))) + m + k) | 0, s) + b) | 0 -} + var res = a.add(b); + if (res.cmp(this.m) >= 0) { + res.isub(this.m); + } + return res._forceRed(this); + }; -module.exports = MD5 + Red.prototype.iadd = function iadd (a, b) { + this._verify2(a, b); -},{"hash-base":89,"inherits":104,"safe-buffer":148}],108:[function(require,module,exports){ -var bn = require('bn.js'); -var brorand = require('brorand'); + var res = a.iadd(b); + if (res.cmp(this.m) >= 0) { + res.isub(this.m); + } + return res; + }; -function MillerRabin(rand) { - this.rand = rand || new brorand.Rand(); -} -module.exports = MillerRabin; + Red.prototype.sub = function sub (a, b) { + this._verify2(a, b); -MillerRabin.create = function create(rand) { - return new MillerRabin(rand); -}; + var res = a.sub(b); + if (res.cmpn(0) < 0) { + res.iadd(this.m); + } + return res._forceRed(this); + }; -MillerRabin.prototype._randbelow = function _randbelow(n) { - var len = n.bitLength(); - var min_bytes = Math.ceil(len / 8); + Red.prototype.isub = function isub (a, b) { + this._verify2(a, b); - // Generage random bytes until a number less than n is found. - // This ensures that 0..n-1 have an equal probability of being selected. - do - var a = new bn(this.rand.generate(min_bytes)); - while (a.cmp(n) >= 0); + var res = a.isub(b); + if (res.cmpn(0) < 0) { + res.iadd(this.m); + } + return res; + }; - return a; -}; + Red.prototype.shl = function shl (a, num) { + this._verify1(a); + return this.imod(a.ushln(num)); + }; -MillerRabin.prototype._randrange = function _randrange(start, stop) { - // Generate a random number greater than or equal to start and less than stop. - var size = stop.sub(start); - return start.add(this._randbelow(size)); -}; + Red.prototype.imul = function imul (a, b) { + this._verify2(a, b); + return this.imod(a.imul(b)); + }; -MillerRabin.prototype.test = function test(n, k, cb) { - var len = n.bitLength(); - var red = bn.mont(n); - var rone = new bn(1).toRed(red); + Red.prototype.mul = function mul (a, b) { + this._verify2(a, b); + return this.imod(a.mul(b)); + }; - if (!k) - k = Math.max(1, (len / 48) | 0); + Red.prototype.isqr = function isqr (a) { + return this.imul(a, a.clone()); + }; - // Find d and s, (n - 1) = (2 ^ s) * d; - var n1 = n.subn(1); - for (var s = 0; !n1.testn(s); s++) {} - var d = n.shrn(s); + Red.prototype.sqr = function sqr (a) { + return this.mul(a, a); + }; - var rn1 = n1.toRed(red); + Red.prototype.sqrt = function sqrt (a) { + if (a.isZero()) return a.clone(); - var prime = true; - for (; k > 0; k--) { - var a = this._randrange(new bn(2), n1); - if (cb) - cb(a); + var mod3 = this.m.andln(3); + assert(mod3 % 2 === 1); - var x = a.toRed(red).redPow(d); - if (x.cmp(rone) === 0 || x.cmp(rn1) === 0) - continue; + // Fast case + if (mod3 === 3) { + var pow = this.m.add(new BN(1)).iushrn(2); + return this.pow(a, pow); + } - for (var i = 1; i < s; i++) { - x = x.redSqr(); + // Tonelli-Shanks algorithm (Totally unoptimized and slow) + // + // Find Q and S, that Q * 2 ^ S = (P - 1) + var q = this.m.subn(1); + var s = 0; + while (!q.isZero() && q.andln(1) === 0) { + s++; + q.iushrn(1); + } + assert(!q.isZero()); - if (x.cmp(rone) === 0) - return false; - if (x.cmp(rn1) === 0) - break; + var one = new BN(1).toRed(this); + var nOne = one.redNeg(); + + // Find quadratic non-residue + // NOTE: Max is such because of generalized Riemann hypothesis. + var lpow = this.m.subn(1).iushrn(1); + var z = this.m.bitLength(); + z = new BN(2 * z * z).toRed(this); + + while (this.pow(z, lpow).cmp(nOne) !== 0) { + z.redIAdd(nOne); } - if (i === s) - return false; - } + var c = this.pow(z, q); + var r = this.pow(a, q.addn(1).iushrn(1)); + var t = this.pow(a, q); + var m = s; + while (t.cmp(one) !== 0) { + var tmp = t; + for (var i = 0; tmp.cmp(one) !== 0; i++) { + tmp = tmp.redSqr(); + } + assert(i < m); + var b = this.pow(c, new BN(1).iushln(m - i - 1)); - return prime; -}; + r = r.redMul(b); + c = b.redSqr(); + t = t.redMul(c); + m = i; + } -MillerRabin.prototype.getDivisor = function getDivisor(n, k) { - var len = n.bitLength(); - var red = bn.mont(n); - var rone = new bn(1).toRed(red); + return r; + }; - if (!k) - k = Math.max(1, (len / 48) | 0); + Red.prototype.invm = function invm (a) { + var inv = a._invmp(this.m); + if (inv.negative !== 0) { + inv.negative = 0; + return this.imod(inv).redNeg(); + } else { + return this.imod(inv); + } + }; - // Find d and s, (n - 1) = (2 ^ s) * d; - var n1 = n.subn(1); - for (var s = 0; !n1.testn(s); s++) {} - var d = n.shrn(s); + Red.prototype.pow = function pow (a, num) { + if (num.isZero()) return new BN(1).toRed(this); + if (num.cmpn(1) === 0) return a.clone(); - var rn1 = n1.toRed(red); + var windowSize = 4; + var wnd = new Array(1 << windowSize); + wnd[0] = new BN(1).toRed(this); + wnd[1] = a; + for (var i = 2; i < wnd.length; i++) { + wnd[i] = this.mul(wnd[i - 1], a); + } - for (; k > 0; k--) { - var a = this._randrange(new bn(2), n1); + var res = wnd[0]; + var current = 0; + var currentLen = 0; + var start = num.bitLength() % 26; + if (start === 0) { + start = 26; + } - var g = n.gcd(a); - if (g.cmpn(1) !== 0) - return g; + for (i = num.length - 1; i >= 0; i--) { + var word = num.words[i]; + for (var j = start - 1; j >= 0; j--) { + var bit = (word >> j) & 1; + if (res !== wnd[0]) { + res = this.sqr(res); + } - var x = a.toRed(red).redPow(d); - if (x.cmp(rone) === 0 || x.cmp(rn1) === 0) - continue; + if (bit === 0 && current === 0) { + currentLen = 0; + continue; + } - for (var i = 1; i < s; i++) { - x = x.redSqr(); + current <<= 1; + current |= bit; + currentLen++; + if (currentLen !== windowSize && (i !== 0 || j !== 0)) continue; - if (x.cmp(rone) === 0) - return x.fromRed().subn(1).gcd(n); - if (x.cmp(rn1) === 0) - break; + res = this.mul(res, wnd[current]); + currentLen = 0; + current = 0; + } + start = 26; } - if (i === s) { - x = x.redSqr(); - return x.fromRed().subn(1).gcd(n); - } - } + return res; + }; - return false; -}; + Red.prototype.convertTo = function convertTo (num) { + var r = num.umod(this.m); -},{"bn.js":20,"brorand":21}],109:[function(require,module,exports){ -module.exports = assert; + return r === num ? r.clone() : r; + }; -function assert(val, msg) { - if (!val) - throw new Error(msg || 'Assertion failed'); -} + Red.prototype.convertFrom = function convertFrom (num) { + var res = num.clone(); + res.red = null; + return res; + }; -assert.equal = function assertEqual(l, r, msg) { - if (l != r) - throw new Error(msg || ('Assertion failed: ' + l + ' != ' + r)); -}; + // + // Montgomery method engine + // -},{}],110:[function(require,module,exports){ -'use strict'; + BN.mont = function mont (num) { + return new Mont(num); + }; -var utils = exports; + function Mont (m) { + Red.call(this, m); -function toArray(msg, enc) { - if (Array.isArray(msg)) - return msg.slice(); - if (!msg) - return []; - var res = []; - if (typeof msg !== 'string') { - for (var i = 0; i < msg.length; i++) - res[i] = msg[i] | 0; - return res; - } - if (enc === 'hex') { - msg = msg.replace(/[^a-z0-9]+/ig, ''); - if (msg.length % 2 !== 0) - msg = '0' + msg; - for (var i = 0; i < msg.length; i += 2) - res.push(parseInt(msg[i] + msg[i + 1], 16)); - } else { - for (var i = 0; i < msg.length; i++) { - var c = msg.charCodeAt(i); - var hi = c >> 8; - var lo = c & 0xff; - if (hi) - res.push(hi, lo); - else - res.push(lo); + this.shift = this.m.bitLength(); + if (this.shift % 26 !== 0) { + this.shift += 26 - (this.shift % 26); } - } - return res; -} -utils.toArray = toArray; -function zero2(word) { - if (word.length === 1) - return '0' + word; - else - return word; -} -utils.zero2 = zero2; + this.r = new BN(1).iushln(this.shift); + this.r2 = this.imod(this.r.sqr()); + this.rinv = this.r._invmp(this.m); -function toHex(msg) { - var res = ''; - for (var i = 0; i < msg.length; i++) - res += zero2(msg[i].toString(16)); - return res; -} -utils.toHex = toHex; + this.minv = this.rinv.mul(this.r).isubn(1).div(this.m); + this.minv = this.minv.umod(this.r); + this.minv = this.r.sub(this.minv); + } + inherits(Mont, Red); -utils.encode = function encode(arr, enc) { - if (enc === 'hex') - return toHex(arr); - else - return arr; -}; + Mont.prototype.convertTo = function convertTo (num) { + return this.imod(num.ushln(this.shift)); + }; -},{}],111:[function(require,module,exports){ -module.exports={"2.16.840.1.101.3.4.1.1": "aes-128-ecb", -"2.16.840.1.101.3.4.1.2": "aes-128-cbc", -"2.16.840.1.101.3.4.1.3": "aes-128-ofb", -"2.16.840.1.101.3.4.1.4": "aes-128-cfb", -"2.16.840.1.101.3.4.1.21": "aes-192-ecb", -"2.16.840.1.101.3.4.1.22": "aes-192-cbc", -"2.16.840.1.101.3.4.1.23": "aes-192-ofb", -"2.16.840.1.101.3.4.1.24": "aes-192-cfb", -"2.16.840.1.101.3.4.1.41": "aes-256-ecb", -"2.16.840.1.101.3.4.1.42": "aes-256-cbc", -"2.16.840.1.101.3.4.1.43": "aes-256-ofb", -"2.16.840.1.101.3.4.1.44": "aes-256-cfb" -} -},{}],112:[function(require,module,exports){ -// from https://github.com/indutny/self-signed/blob/gh-pages/lib/asn1.js -// Fedor, you are amazing. -'use strict' + Mont.prototype.convertFrom = function convertFrom (num) { + var r = this.imod(num.mul(this.rinv)); + r.red = null; + return r; + }; -var asn1 = require('asn1.js') + Mont.prototype.imul = function imul (a, b) { + if (a.isZero() || b.isZero()) { + a.words[0] = 0; + a.length = 1; + return a; + } -exports.certificate = require('./certificate') + var t = a.imul(b); + var c = t.maskn(this.shift).mul(this.minv).imaskn(this.shift).mul(this.m); + var u = t.isub(c).iushrn(this.shift); + var res = u; -var RSAPrivateKey = asn1.define('RSAPrivateKey', function () { - this.seq().obj( - this.key('version').int(), - this.key('modulus').int(), - this.key('publicExponent').int(), - this.key('privateExponent').int(), - this.key('prime1').int(), - this.key('prime2').int(), - this.key('exponent1').int(), - this.key('exponent2').int(), - this.key('coefficient').int() - ) -}) -exports.RSAPrivateKey = RSAPrivateKey + if (u.cmp(this.m) >= 0) { + res = u.isub(this.m); + } else if (u.cmpn(0) < 0) { + res = u.iadd(this.m); + } -var RSAPublicKey = asn1.define('RSAPublicKey', function () { - this.seq().obj( - this.key('modulus').int(), - this.key('publicExponent').int() - ) -}) -exports.RSAPublicKey = RSAPublicKey + return res._forceRed(this); + }; -var PublicKey = asn1.define('SubjectPublicKeyInfo', function () { - this.seq().obj( - this.key('algorithm').use(AlgorithmIdentifier), - this.key('subjectPublicKey').bitstr() - ) -}) -exports.PublicKey = PublicKey + Mont.prototype.mul = function mul (a, b) { + if (a.isZero() || b.isZero()) return new BN(0)._forceRed(this); -var AlgorithmIdentifier = asn1.define('AlgorithmIdentifier', function () { - this.seq().obj( - this.key('algorithm').objid(), - this.key('none').null_().optional(), - this.key('curve').objid().optional(), - this.key('params').seq().obj( - this.key('p').int(), - this.key('q').int(), - this.key('g').int() - ).optional() - ) -}) + var t = a.mul(b); + var c = t.maskn(this.shift).mul(this.minv).imaskn(this.shift).mul(this.m); + var u = t.isub(c).iushrn(this.shift); + var res = u; + if (u.cmp(this.m) >= 0) { + res = u.isub(this.m); + } else if (u.cmpn(0) < 0) { + res = u.iadd(this.m); + } -var PrivateKeyInfo = asn1.define('PrivateKeyInfo', function () { - this.seq().obj( - this.key('version').int(), - this.key('algorithm').use(AlgorithmIdentifier), - this.key('subjectPrivateKey').octstr() - ) -}) -exports.PrivateKey = PrivateKeyInfo -var EncryptedPrivateKeyInfo = asn1.define('EncryptedPrivateKeyInfo', function () { - this.seq().obj( - this.key('algorithm').seq().obj( - this.key('id').objid(), - this.key('decrypt').seq().obj( - this.key('kde').seq().obj( - this.key('id').objid(), - this.key('kdeparams').seq().obj( - this.key('salt').octstr(), - this.key('iters').int() - ) - ), - this.key('cipher').seq().obj( - this.key('algo').objid(), - this.key('iv').octstr() - ) - ) - ), - this.key('subjectPrivateKey').octstr() - ) -}) + return res._forceRed(this); + }; -exports.EncryptedPrivateKey = EncryptedPrivateKeyInfo + Mont.prototype.invm = function invm (a) { + // (AR)^-1 * R^2 = (A^-1 * R^-1) * R^2 = A^-1 * R + var res = this.imod(a._invmp(this.m).mul(this.r2)); + return res._forceRed(this); + }; +})(typeof module === 'undefined' || module, this); -var DSAPrivateKey = asn1.define('DSAPrivateKey', function () { - this.seq().obj( - this.key('version').int(), - this.key('p').int(), - this.key('q').int(), - this.key('g').int(), - this.key('pub_key').int(), - this.key('priv_key').int() - ) -}) -exports.DSAPrivateKey = DSAPrivateKey +},{"buffer":68}],67:[function(require,module,exports){ +var r; -exports.DSAparam = asn1.define('DSAparam', function () { - this.int() -}) +module.exports = function rand(len) { + if (!r) + r = new Rand(null); -var ECPrivateKey = asn1.define('ECPrivateKey', function () { - this.seq().obj( - this.key('version').int(), - this.key('privateKey').octstr(), - this.key('parameters').optional().explicit(0).use(ECParameters), - this.key('publicKey').optional().explicit(1).bitstr() - ) -}) -exports.ECPrivateKey = ECPrivateKey + return r.generate(len); +}; -var ECParameters = asn1.define('ECParameters', function () { - this.choice({ - namedCurve: this.objid() - }) -}) +function Rand(rand) { + this.rand = rand; +} +module.exports.Rand = Rand; -exports.signature = asn1.define('signature', function () { - this.seq().obj( - this.key('r').int(), - this.key('s').int() - ) -}) +Rand.prototype.generate = function generate(len) { + return this._rand(len); +}; -},{"./certificate":113,"asn1.js":1}],113:[function(require,module,exports){ -// from https://github.com/Rantanen/node-dtls/blob/25a7dc861bda38cfeac93a723500eea4f0ac2e86/Certificate.js -// thanks to @Rantanen +// Emulate crypto API using randy +Rand.prototype._rand = function _rand(n) { + if (this.rand.getBytes) + return this.rand.getBytes(n); -'use strict' + var res = new Uint8Array(n); + for (var i = 0; i < res.length; i++) + res[i] = this.rand.getByte(); + return res; +}; -var asn = require('asn1.js') +if (typeof self === 'object') { + if (self.crypto && self.crypto.getRandomValues) { + // Modern browsers + Rand.prototype._rand = function _rand(n) { + var arr = new Uint8Array(n); + self.crypto.getRandomValues(arr); + return arr; + }; + } else if (self.msCrypto && self.msCrypto.getRandomValues) { + // IE + Rand.prototype._rand = function _rand(n) { + var arr = new Uint8Array(n); + self.msCrypto.getRandomValues(arr); + return arr; + }; -var Time = asn.define('Time', function () { - this.choice({ - utcTime: this.utctime(), - generalTime: this.gentime() - }) -}) + // Safari's WebWorkers do not have `crypto` + } else if (typeof window === 'object') { + // Old junk + Rand.prototype._rand = function() { + throw new Error('Not implemented yet'); + }; + } +} else { + // Node.js or Web worker with no crypto support + try { + var crypto = require('crypto'); + if (typeof crypto.randomBytes !== 'function') + throw new Error('Not supported'); -var AttributeTypeValue = asn.define('AttributeTypeValue', function () { - this.seq().obj( - this.key('type').objid(), - this.key('value').any() - ) -}) + Rand.prototype._rand = function _rand(n) { + return crypto.randomBytes(n); + }; + } catch (e) { + } +} -var AlgorithmIdentifier = asn.define('AlgorithmIdentifier', function () { - this.seq().obj( - this.key('algorithm').objid(), - this.key('parameters').optional() - ) -}) +},{"crypto":68}],68:[function(require,module,exports){ -var SubjectPublicKeyInfo = asn.define('SubjectPublicKeyInfo', function () { - this.seq().obj( - this.key('algorithm').use(AlgorithmIdentifier), - this.key('subjectPublicKey').bitstr() - ) -}) +},{}],69:[function(require,module,exports){ +// based on the aes implimentation in triple sec +// https://github.com/keybase/triplesec +// which is in turn based on the one from crypto-js +// https://code.google.com/p/crypto-js/ -var RelativeDistinguishedName = asn.define('RelativeDistinguishedName', function () { - this.setof(AttributeTypeValue) -}) +var Buffer = require('safe-buffer').Buffer -var RDNSequence = asn.define('RDNSequence', function () { - this.seqof(RelativeDistinguishedName) -}) +function asUInt32Array (buf) { + if (!Buffer.isBuffer(buf)) buf = Buffer.from(buf) -var Name = asn.define('Name', function () { - this.choice({ - rdnSequence: this.use(RDNSequence) - }) -}) + var len = (buf.length / 4) | 0 + var out = new Array(len) -var Validity = asn.define('Validity', function () { - this.seq().obj( - this.key('notBefore').use(Time), - this.key('notAfter').use(Time) - ) -}) + for (var i = 0; i < len; i++) { + out[i] = buf.readUInt32BE(i * 4) + } -var Extension = asn.define('Extension', function () { - this.seq().obj( - this.key('extnID').objid(), - this.key('critical').bool().def(false), - this.key('extnValue').octstr() - ) -}) + return out +} -var TBSCertificate = asn.define('TBSCertificate', function () { - this.seq().obj( - this.key('version').explicit(0).int(), - this.key('serialNumber').int(), - this.key('signature').use(AlgorithmIdentifier), - this.key('issuer').use(Name), - this.key('validity').use(Validity), - this.key('subject').use(Name), - this.key('subjectPublicKeyInfo').use(SubjectPublicKeyInfo), - this.key('issuerUniqueID').implicit(1).bitstr().optional(), - this.key('subjectUniqueID').implicit(2).bitstr().optional(), - this.key('extensions').explicit(3).seqof(Extension).optional() - ) -}) +function scrubVec (v) { + for (var i = 0; i < v.length; v++) { + v[i] = 0 + } +} -var X509Certificate = asn.define('X509Certificate', function () { - this.seq().obj( - this.key('tbsCertificate').use(TBSCertificate), - this.key('signatureAlgorithm').use(AlgorithmIdentifier), - this.key('signatureValue').bitstr() - ) -}) +function cryptBlock (M, keySchedule, SUB_MIX, SBOX, nRounds) { + var SUB_MIX0 = SUB_MIX[0] + var SUB_MIX1 = SUB_MIX[1] + var SUB_MIX2 = SUB_MIX[2] + var SUB_MIX3 = SUB_MIX[3] -module.exports = X509Certificate + var s0 = M[0] ^ keySchedule[0] + var s1 = M[1] ^ keySchedule[1] + var s2 = M[2] ^ keySchedule[2] + var s3 = M[3] ^ keySchedule[3] + var t0, t1, t2, t3 + var ksRow = 4 -},{"asn1.js":1}],114:[function(require,module,exports){ -(function (Buffer){ -// adapted from https://github.com/apatil/pemstrip -var findProc = /Proc-Type: 4,ENCRYPTED[\n\r]+DEK-Info: AES-((?:128)|(?:192)|(?:256))-CBC,([0-9A-H]+)[\n\r]+([0-9A-z\n\r\+\/\=]+)[\n\r]+/m -var startRegex = /^-----BEGIN ((?:.* KEY)|CERTIFICATE)-----/m -var fullRegex = /^-----BEGIN ((?:.* KEY)|CERTIFICATE)-----([0-9A-z\n\r\+\/\=]+)-----END \1-----$/m -var evp = require('evp_bytestokey') -var ciphers = require('browserify-aes') -module.exports = function (okey, password) { - var key = okey.toString() - var match = key.match(findProc) - var decrypted - if (!match) { - var match2 = key.match(fullRegex) - decrypted = new Buffer(match2[2].replace(/[\r\n]/g, ''), 'base64') - } else { - var suite = 'aes' + match[1] - var iv = new Buffer(match[2], 'hex') - var cipherText = new Buffer(match[3].replace(/[\r\n]/g, ''), 'base64') - var cipherKey = evp(password, iv.slice(0, 8), parseInt(match[1], 10)).key - var out = [] - var cipher = ciphers.createDecipheriv(suite, cipherKey, iv) - out.push(cipher.update(cipherText)) - out.push(cipher.final()) - decrypted = Buffer.concat(out) + for (var round = 1; round < nRounds; round++) { + t0 = SUB_MIX0[s0 >>> 24] ^ SUB_MIX1[(s1 >>> 16) & 0xff] ^ SUB_MIX2[(s2 >>> 8) & 0xff] ^ SUB_MIX3[s3 & 0xff] ^ keySchedule[ksRow++] + t1 = SUB_MIX0[s1 >>> 24] ^ SUB_MIX1[(s2 >>> 16) & 0xff] ^ SUB_MIX2[(s3 >>> 8) & 0xff] ^ SUB_MIX3[s0 & 0xff] ^ keySchedule[ksRow++] + t2 = SUB_MIX0[s2 >>> 24] ^ SUB_MIX1[(s3 >>> 16) & 0xff] ^ SUB_MIX2[(s0 >>> 8) & 0xff] ^ SUB_MIX3[s1 & 0xff] ^ keySchedule[ksRow++] + t3 = SUB_MIX0[s3 >>> 24] ^ SUB_MIX1[(s0 >>> 16) & 0xff] ^ SUB_MIX2[(s1 >>> 8) & 0xff] ^ SUB_MIX3[s2 & 0xff] ^ keySchedule[ksRow++] + s0 = t0 + s1 = t1 + s2 = t2 + s3 = t3 } - var tag = key.match(startRegex)[1] + + t0 = ((SBOX[s0 >>> 24] << 24) | (SBOX[(s1 >>> 16) & 0xff] << 16) | (SBOX[(s2 >>> 8) & 0xff] << 8) | SBOX[s3 & 0xff]) ^ keySchedule[ksRow++] + t1 = ((SBOX[s1 >>> 24] << 24) | (SBOX[(s2 >>> 16) & 0xff] << 16) | (SBOX[(s3 >>> 8) & 0xff] << 8) | SBOX[s0 & 0xff]) ^ keySchedule[ksRow++] + t2 = ((SBOX[s2 >>> 24] << 24) | (SBOX[(s3 >>> 16) & 0xff] << 16) | (SBOX[(s0 >>> 8) & 0xff] << 8) | SBOX[s1 & 0xff]) ^ keySchedule[ksRow++] + t3 = ((SBOX[s3 >>> 24] << 24) | (SBOX[(s0 >>> 16) & 0xff] << 16) | (SBOX[(s1 >>> 8) & 0xff] << 8) | SBOX[s2 & 0xff]) ^ keySchedule[ksRow++] + t0 = t0 >>> 0 + t1 = t1 >>> 0 + t2 = t2 >>> 0 + t3 = t3 >>> 0 + + return [t0, t1, t2, t3] +} + +// AES constants +var RCON = [0x00, 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36] +var G = (function () { + // Compute double table + var d = new Array(256) + for (var j = 0; j < 256; j++) { + if (j < 128) { + d[j] = j << 1 + } else { + d[j] = (j << 1) ^ 0x11b + } + } + + var SBOX = [] + var INV_SBOX = [] + var SUB_MIX = [[], [], [], []] + var INV_SUB_MIX = [[], [], [], []] + + // Walk GF(2^8) + var x = 0 + var xi = 0 + for (var i = 0; i < 256; ++i) { + // Compute sbox + var sx = xi ^ (xi << 1) ^ (xi << 2) ^ (xi << 3) ^ (xi << 4) + sx = (sx >>> 8) ^ (sx & 0xff) ^ 0x63 + SBOX[x] = sx + INV_SBOX[sx] = x + + // Compute multiplication + var x2 = d[x] + var x4 = d[x2] + var x8 = d[x4] + + // Compute sub bytes, mix columns tables + var t = (d[sx] * 0x101) ^ (sx * 0x1010100) + SUB_MIX[0][x] = (t << 24) | (t >>> 8) + SUB_MIX[1][x] = (t << 16) | (t >>> 16) + SUB_MIX[2][x] = (t << 8) | (t >>> 24) + SUB_MIX[3][x] = t + + // Compute inv sub bytes, inv mix columns tables + t = (x8 * 0x1010101) ^ (x4 * 0x10001) ^ (x2 * 0x101) ^ (x * 0x1010100) + INV_SUB_MIX[0][sx] = (t << 24) | (t >>> 8) + INV_SUB_MIX[1][sx] = (t << 16) | (t >>> 16) + INV_SUB_MIX[2][sx] = (t << 8) | (t >>> 24) + INV_SUB_MIX[3][sx] = t + + if (x === 0) { + x = xi = 1 + } else { + x = x2 ^ d[d[d[x8 ^ x2]]] + xi ^= d[d[xi]] + } + } + return { - tag: tag, - data: decrypted + SBOX: SBOX, + INV_SBOX: INV_SBOX, + SUB_MIX: SUB_MIX, + INV_SUB_MIX: INV_SUB_MIX } +})() + +function AES (key) { + this._key = asUInt32Array(key) + this._reset() } -}).call(this,require("buffer").Buffer) -},{"browserify-aes":25,"buffer":52,"evp_bytestokey":88}],115:[function(require,module,exports){ -(function (Buffer){ -var asn1 = require('./asn1') -var aesid = require('./aesid.json') -var fixProc = require('./fixProc') -var ciphers = require('browserify-aes') -var compat = require('pbkdf2') -module.exports = parseKeys +AES.blockSize = 4 * 4 +AES.keySize = 256 / 8 +AES.prototype.blockSize = AES.blockSize +AES.prototype.keySize = AES.keySize +AES.prototype._reset = function () { + var keyWords = this._key + var keySize = keyWords.length + var nRounds = keySize + 6 + var ksRows = (nRounds + 1) * 4 -function parseKeys (buffer) { - var password - if (typeof buffer === 'object' && !Buffer.isBuffer(buffer)) { - password = buffer.passphrase - buffer = buffer.key - } - if (typeof buffer === 'string') { - buffer = new Buffer(buffer) + var keySchedule = [] + for (var k = 0; k < keySize; k++) { + keySchedule[k] = keyWords[k] } - var stripped = fixProc(buffer, password) + for (k = keySize; k < ksRows; k++) { + var t = keySchedule[k - 1] - var type = stripped.tag - var data = stripped.data - var subtype, ndata - switch (type) { - case 'CERTIFICATE': - ndata = asn1.certificate.decode(data, 'der').tbsCertificate.subjectPublicKeyInfo - // falls through - case 'PUBLIC KEY': - if (!ndata) { - ndata = asn1.PublicKey.decode(data, 'der') - } - subtype = ndata.algorithm.algorithm.join('.') - switch (subtype) { - case '1.2.840.113549.1.1.1': - return asn1.RSAPublicKey.decode(ndata.subjectPublicKey.data, 'der') - case '1.2.840.10045.2.1': - ndata.subjectPrivateKey = ndata.subjectPublicKey - return { - type: 'ec', - data: ndata - } - case '1.2.840.10040.4.1': - ndata.algorithm.params.pub_key = asn1.DSAparam.decode(ndata.subjectPublicKey.data, 'der') - return { - type: 'dsa', - data: ndata.algorithm.params - } - default: throw new Error('unknown key id ' + subtype) - } - throw new Error('unknown key type ' + type) - case 'ENCRYPTED PRIVATE KEY': - data = asn1.EncryptedPrivateKey.decode(data, 'der') - data = decrypt(data, password) - // falls through - case 'PRIVATE KEY': - ndata = asn1.PrivateKey.decode(data, 'der') - subtype = ndata.algorithm.algorithm.join('.') - switch (subtype) { - case '1.2.840.113549.1.1.1': - return asn1.RSAPrivateKey.decode(ndata.subjectPrivateKey, 'der') - case '1.2.840.10045.2.1': - return { - curve: ndata.algorithm.curve, - privateKey: asn1.ECPrivateKey.decode(ndata.subjectPrivateKey, 'der').privateKey - } - case '1.2.840.10040.4.1': - ndata.algorithm.params.priv_key = asn1.DSAparam.decode(ndata.subjectPrivateKey, 'der') - return { - type: 'dsa', - params: ndata.algorithm.params - } - default: throw new Error('unknown key id ' + subtype) - } - throw new Error('unknown key type ' + type) - case 'RSA PUBLIC KEY': - return asn1.RSAPublicKey.decode(data, 'der') - case 'RSA PRIVATE KEY': - return asn1.RSAPrivateKey.decode(data, 'der') - case 'DSA PRIVATE KEY': - return { - type: 'dsa', - params: asn1.DSAPrivateKey.decode(data, 'der') - } - case 'EC PRIVATE KEY': - data = asn1.ECPrivateKey.decode(data, 'der') - return { - curve: data.parameters.value, - privateKey: data.privateKey - } - default: throw new Error('unknown key type ' + type) - } -} -parseKeys.signature = asn1.signature -function decrypt (data, password) { - var salt = data.algorithm.decrypt.kde.kdeparams.salt - var iters = parseInt(data.algorithm.decrypt.kde.kdeparams.iters.toString(), 10) - var algo = aesid[data.algorithm.decrypt.cipher.algo.join('.')] - var iv = data.algorithm.decrypt.cipher.iv - var cipherText = data.subjectPrivateKey - var keylen = parseInt(algo.split('-')[1], 10) / 8 - var key = compat.pbkdf2Sync(password, salt, iters, keylen) - var cipher = ciphers.createDecipheriv(algo, key, iv) - var out = [] - out.push(cipher.update(cipherText)) - out.push(cipher.final()) - return Buffer.concat(out) -} - -}).call(this,require("buffer").Buffer) -},{"./aesid.json":111,"./asn1":112,"./fixProc":114,"browserify-aes":25,"buffer":52,"pbkdf2":116}],116:[function(require,module,exports){ -exports.pbkdf2 = require('./lib/async') -exports.pbkdf2Sync = require('./lib/sync') + if (k % keySize === 0) { + t = (t << 8) | (t >>> 24) + t = + (G.SBOX[t >>> 24] << 24) | + (G.SBOX[(t >>> 16) & 0xff] << 16) | + (G.SBOX[(t >>> 8) & 0xff] << 8) | + (G.SBOX[t & 0xff]) -},{"./lib/async":117,"./lib/sync":120}],117:[function(require,module,exports){ -(function (process,global){ -var checkParameters = require('./precondition') -var defaultEncoding = require('./default-encoding') -var sync = require('./sync') -var Buffer = require('safe-buffer').Buffer + t ^= RCON[(k / keySize) | 0] << 24 + } else if (keySize > 6 && k % keySize === 4) { + t = + (G.SBOX[t >>> 24] << 24) | + (G.SBOX[(t >>> 16) & 0xff] << 16) | + (G.SBOX[(t >>> 8) & 0xff] << 8) | + (G.SBOX[t & 0xff]) + } -var ZERO_BUF -var subtle = global.crypto && global.crypto.subtle -var toBrowser = { - 'sha': 'SHA-1', - 'sha-1': 'SHA-1', - 'sha1': 'SHA-1', - 'sha256': 'SHA-256', - 'sha-256': 'SHA-256', - 'sha384': 'SHA-384', - 'sha-384': 'SHA-384', - 'sha-512': 'SHA-512', - 'sha512': 'SHA-512' -} -var checks = [] -function checkNative (algo) { - if (global.process && !global.process.browser) { - return Promise.resolve(false) - } - if (!subtle || !subtle.importKey || !subtle.deriveBits) { - return Promise.resolve(false) + keySchedule[k] = keySchedule[k - keySize] ^ t } - if (checks[algo] !== undefined) { - return checks[algo] + + var invKeySchedule = [] + for (var ik = 0; ik < ksRows; ik++) { + var ksR = ksRows - ik + var tt = keySchedule[ksR - (ik % 4 ? 0 : 4)] + + if (ik < 4 || ksR <= 4) { + invKeySchedule[ik] = tt + } else { + invKeySchedule[ik] = + G.INV_SUB_MIX[0][G.SBOX[tt >>> 24]] ^ + G.INV_SUB_MIX[1][G.SBOX[(tt >>> 16) & 0xff]] ^ + G.INV_SUB_MIX[2][G.SBOX[(tt >>> 8) & 0xff]] ^ + G.INV_SUB_MIX[3][G.SBOX[tt & 0xff]] + } } - ZERO_BUF = ZERO_BUF || Buffer.alloc(8) - var prom = browserPbkdf2(ZERO_BUF, ZERO_BUF, 10, 128, algo) - .then(function () { - return true - }).catch(function () { - return false - }) - checks[algo] = prom - return prom -} -function browserPbkdf2 (password, salt, iterations, length, algo) { - return subtle.importKey( - 'raw', password, {name: 'PBKDF2'}, false, ['deriveBits'] - ).then(function (key) { - return subtle.deriveBits({ - name: 'PBKDF2', - salt: salt, - iterations: iterations, - hash: { - name: algo - } - }, key, length << 3) - }).then(function (res) { - return Buffer.from(res) - }) + this._nRounds = nRounds + this._keySchedule = keySchedule + this._invKeySchedule = invKeySchedule } -function resolvePromise (promise, callback) { - promise.then(function (out) { - process.nextTick(function () { - callback(null, out) - }) - }, function (e) { - process.nextTick(function () { - callback(e) - }) - }) +AES.prototype.encryptBlockRaw = function (M) { + M = asUInt32Array(M) + return cryptBlock(M, this._keySchedule, G.SUB_MIX, G.SBOX, this._nRounds) } -module.exports = function (password, salt, iterations, keylen, digest, callback) { - if (typeof digest === 'function') { - callback = digest - digest = undefined - } - digest = digest || 'sha1' - var algo = toBrowser[digest.toLowerCase()] - - if (!algo || typeof global.Promise !== 'function') { - return process.nextTick(function () { - var out - try { - out = sync(password, salt, iterations, keylen, digest) - } catch (e) { - return callback(e) - } - callback(null, out) - }) - } +AES.prototype.encryptBlock = function (M) { + var out = this.encryptBlockRaw(M) + var buf = Buffer.allocUnsafe(16) + buf.writeUInt32BE(out[0], 0) + buf.writeUInt32BE(out[1], 4) + buf.writeUInt32BE(out[2], 8) + buf.writeUInt32BE(out[3], 12) + return buf +} - checkParameters(password, salt, iterations, keylen) - if (typeof callback !== 'function') throw new Error('No callback provided to pbkdf2') - if (!Buffer.isBuffer(password)) password = Buffer.from(password, defaultEncoding) - if (!Buffer.isBuffer(salt)) salt = Buffer.from(salt, defaultEncoding) +AES.prototype.decryptBlock = function (M) { + M = asUInt32Array(M) - resolvePromise(checkNative(algo).then(function (resp) { - if (resp) return browserPbkdf2(password, salt, iterations, keylen, algo) + // swap + var m1 = M[1] + M[1] = M[3] + M[3] = m1 - return sync(password, salt, iterations, keylen, digest) - }), callback) + var out = cryptBlock(M, this._invKeySchedule, G.INV_SUB_MIX, G.INV_SBOX, this._nRounds) + var buf = Buffer.allocUnsafe(16) + buf.writeUInt32BE(out[0], 0) + buf.writeUInt32BE(out[3], 4) + buf.writeUInt32BE(out[2], 8) + buf.writeUInt32BE(out[1], 12) + return buf } -}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {}) -},{"./default-encoding":118,"./precondition":119,"./sync":120,"_process":122,"safe-buffer":148}],118:[function(require,module,exports){ -(function (process){ -var defaultEncoding -/* istanbul ignore next */ -if (process.browser) { - defaultEncoding = 'utf-8' -} else { - var pVersionMajor = parseInt(process.version.split('.')[0].slice(1), 10) - - defaultEncoding = pVersionMajor >= 6 ? 'utf-8' : 'binary' +AES.prototype.scrub = function () { + scrubVec(this._keySchedule) + scrubVec(this._invKeySchedule) + scrubVec(this._key) } -module.exports = defaultEncoding -}).call(this,require('_process')) -},{"_process":122}],119:[function(require,module,exports){ -(function (Buffer){ -var MAX_ALLOC = Math.pow(2, 30) - 1 // default in iojs +module.exports.AES = AES -function checkBuffer (buf, name) { - if (typeof buf !== 'string' && !Buffer.isBuffer(buf)) { - throw new TypeError(name + ' must be a buffer or string') - } -} +},{"safe-buffer":199}],70:[function(require,module,exports){ +var aes = require('./aes') +var Buffer = require('safe-buffer').Buffer +var Transform = require('cipher-base') +var inherits = require('inherits') +var GHASH = require('./ghash') +var xor = require('buffer-xor') +var incr32 = require('./incr32') -module.exports = function (password, salt, iterations, keylen) { - checkBuffer(password, 'Password') - checkBuffer(salt, 'Salt') +function xorTest (a, b) { + var out = 0 + if (a.length !== b.length) out++ - if (typeof iterations !== 'number') { - throw new TypeError('Iterations not a number') + var len = Math.min(a.length, b.length) + for (var i = 0; i < len; ++i) { + out += (a[i] ^ b[i]) } - if (iterations < 0) { - throw new TypeError('Bad iterations') - } + return out +} - if (typeof keylen !== 'number') { - throw new TypeError('Key length not a number') +function calcIv (self, iv, ck) { + if (iv.length === 12) { + self._finID = Buffer.concat([iv, Buffer.from([0, 0, 0, 1])]) + return Buffer.concat([iv, Buffer.from([0, 0, 0, 2])]) } - - if (keylen < 0 || keylen > MAX_ALLOC || keylen !== keylen) { /* eslint no-self-compare: 0 */ - throw new TypeError('Bad key length') + var ghash = new GHASH(ck) + var len = iv.length + var toPad = len % 16 + ghash.update(iv) + if (toPad) { + toPad = 16 - toPad + ghash.update(Buffer.alloc(toPad, 0)) } + ghash.update(Buffer.alloc(8, 0)) + var ivBits = len * 8 + var tail = Buffer.alloc(8) + tail.writeUIntBE(ivBits, 0, 8) + ghash.update(tail) + self._finID = ghash.state + var out = Buffer.from(self._finID) + incr32(out) + return out } +function StreamCipher (mode, key, iv, decrypt) { + Transform.call(this) -}).call(this,{"isBuffer":require("../../is-buffer/index.js")}) -},{"../../is-buffer/index.js":105}],120:[function(require,module,exports){ -var md5 = require('create-hash/md5') -var RIPEMD160 = require('ripemd160') -var sha = require('sha.js') + var h = Buffer.alloc(4, 0) -var checkParameters = require('./precondition') -var defaultEncoding = require('./default-encoding') -var Buffer = require('safe-buffer').Buffer -var ZEROS = Buffer.alloc(128) -var sizes = { - md5: 16, - sha1: 20, - sha224: 28, - sha256: 32, - sha384: 48, - sha512: 64, - rmd160: 20, - ripemd160: 20 + this._cipher = new aes.AES(key) + var ck = this._cipher.encryptBlock(h) + this._ghash = new GHASH(ck) + iv = calcIv(this, iv, ck) + + this._prev = Buffer.from(iv) + this._cache = Buffer.allocUnsafe(0) + this._secCache = Buffer.allocUnsafe(0) + this._decrypt = decrypt + this._alen = 0 + this._len = 0 + this._mode = mode + + this._authTag = null + this._called = false } -function Hmac (alg, key, saltLen) { - var hash = getDigest(alg) - var blocksize = (alg === 'sha512' || alg === 'sha384') ? 128 : 64 +inherits(StreamCipher, Transform) - if (key.length > blocksize) { - key = hash(key) - } else if (key.length < blocksize) { - key = Buffer.concat([key, ZEROS], blocksize) +StreamCipher.prototype._update = function (chunk) { + if (!this._called && this._alen) { + var rump = 16 - (this._alen % 16) + if (rump < 16) { + rump = Buffer.alloc(rump, 0) + this._ghash.update(rump) + } } - var ipad = Buffer.allocUnsafe(blocksize + sizes[alg]) - var opad = Buffer.allocUnsafe(blocksize + sizes[alg]) - for (var i = 0; i < blocksize; i++) { - ipad[i] = key[i] ^ 0x36 - opad[i] = key[i] ^ 0x5C + this._called = true + var out = this._mode.encrypt(this, chunk) + if (this._decrypt) { + this._ghash.update(chunk) + } else { + this._ghash.update(out) } + this._len += chunk.length + return out +} - var ipad1 = Buffer.allocUnsafe(blocksize + saltLen + 4) - ipad.copy(ipad1, 0, 0, blocksize) - this.ipad1 = ipad1 - this.ipad2 = ipad - this.opad = opad - this.alg = alg - this.blocksize = blocksize - this.hash = hash - this.size = sizes[alg] +StreamCipher.prototype._final = function () { + if (this._decrypt && !this._authTag) throw new Error('Unsupported state or unable to authenticate data') + + var tag = xor(this._ghash.final(this._alen * 8, this._len * 8), this._cipher.encryptBlock(this._finID)) + if (this._decrypt && xorTest(tag, this._authTag)) throw new Error('Unsupported state or unable to authenticate data') + + this._authTag = tag + this._cipher.scrub() } -Hmac.prototype.run = function (data, ipad) { - data.copy(ipad, this.blocksize) - var h = this.hash(ipad) - h.copy(this.opad, this.blocksize) - return this.hash(this.opad) +StreamCipher.prototype.getAuthTag = function getAuthTag () { + if (this._decrypt || !Buffer.isBuffer(this._authTag)) throw new Error('Attempting to get auth tag in unsupported state') + + return this._authTag } -function getDigest (alg) { - function shaFunc (data) { - return sha(alg).update(data).digest() - } - function rmd160Func (data) { - return new RIPEMD160().update(data).digest() - } +StreamCipher.prototype.setAuthTag = function setAuthTag (tag) { + if (!this._decrypt) throw new Error('Attempting to set auth tag in unsupported state') - if (alg === 'rmd160' || alg === 'ripemd160') return rmd160Func - if (alg === 'md5') return md5 - return shaFunc + this._authTag = tag } -function pbkdf2 (password, salt, iterations, keylen, digest) { - checkParameters(password, salt, iterations, keylen) +StreamCipher.prototype.setAAD = function setAAD (buf) { + if (this._called) throw new Error('Attempting to set AAD in unsupported state') - if (!Buffer.isBuffer(password)) password = Buffer.from(password, defaultEncoding) - if (!Buffer.isBuffer(salt)) salt = Buffer.from(salt, defaultEncoding) + this._ghash.update(buf) + this._alen += buf.length +} - digest = digest || 'sha1' +module.exports = StreamCipher - var hmac = new Hmac(digest, password, salt.length) +},{"./aes":69,"./ghash":74,"./incr32":75,"buffer-xor":99,"cipher-base":101,"inherits":153,"safe-buffer":199}],71:[function(require,module,exports){ +var ciphers = require('./encrypter') +var deciphers = require('./decrypter') +var modes = require('./modes/list.json') - var DK = Buffer.allocUnsafe(keylen) - var block1 = Buffer.allocUnsafe(salt.length + 4) - salt.copy(block1, 0, 0, salt.length) +function getCiphers () { + return Object.keys(modes) +} - var destPos = 0 - var hLen = sizes[digest] - var l = Math.ceil(keylen / hLen) +exports.createCipher = exports.Cipher = ciphers.createCipher +exports.createCipheriv = exports.Cipheriv = ciphers.createCipheriv +exports.createDecipher = exports.Decipher = deciphers.createDecipher +exports.createDecipheriv = exports.Decipheriv = deciphers.createDecipheriv +exports.listCiphers = exports.getCiphers = getCiphers - for (var i = 1; i <= l; i++) { - block1.writeUInt32BE(i, salt.length) +},{"./decrypter":72,"./encrypter":73,"./modes/list.json":83}],72:[function(require,module,exports){ +var AuthCipher = require('./authCipher') +var Buffer = require('safe-buffer').Buffer +var MODES = require('./modes') +var StreamCipher = require('./streamCipher') +var Transform = require('cipher-base') +var aes = require('./aes') +var ebtk = require('evp_bytestokey') +var inherits = require('inherits') - var T = hmac.run(block1, hmac.ipad1) - var U = T +function Decipher (mode, key, iv) { + Transform.call(this) - for (var j = 1; j < iterations; j++) { - U = hmac.run(U, hmac.ipad2) - for (var k = 0; k < hLen; k++) T[k] ^= U[k] - } + this._cache = new Splitter() + this._last = void 0 + this._cipher = new aes.AES(key) + this._prev = Buffer.from(iv) + this._mode = mode + this._autopadding = true +} - T.copy(DK, destPos) - destPos += hLen +inherits(Decipher, Transform) + +Decipher.prototype._update = function (data) { + this._cache.add(data) + var chunk + var thing + var out = [] + while ((chunk = this._cache.get(this._autopadding))) { + thing = this._mode.decrypt(this, chunk) + out.push(thing) } + return Buffer.concat(out) +} - return DK +Decipher.prototype._final = function () { + var chunk = this._cache.flush() + if (this._autopadding) { + return unpad(this._mode.decrypt(this, chunk)) + } else if (chunk) { + throw new Error('data not multiple of block length') + } } -module.exports = pbkdf2 +Decipher.prototype.setAutoPadding = function (setTo) { + this._autopadding = !!setTo + return this +} -},{"./default-encoding":118,"./precondition":119,"create-hash/md5":57,"ripemd160":147,"safe-buffer":148,"sha.js":150}],121:[function(require,module,exports){ -(function (process){ -'use strict'; +function Splitter () { + this.cache = Buffer.allocUnsafe(0) +} -if (!process.version || - process.version.indexOf('v0.') === 0 || - process.version.indexOf('v1.') === 0 && process.version.indexOf('v1.8.') !== 0) { - module.exports = { nextTick: nextTick }; -} else { - module.exports = process +Splitter.prototype.add = function (data) { + this.cache = Buffer.concat([this.cache, data]) } -function nextTick(fn, arg1, arg2, arg3) { - if (typeof fn !== 'function') { - throw new TypeError('"callback" argument must be a function'); +Splitter.prototype.get = function (autoPadding) { + var out + if (autoPadding) { + if (this.cache.length > 16) { + out = this.cache.slice(0, 16) + this.cache = this.cache.slice(16) + return out + } + } else { + if (this.cache.length >= 16) { + out = this.cache.slice(0, 16) + this.cache = this.cache.slice(16) + return out + } } - var len = arguments.length; - var args, i; - switch (len) { - case 0: - case 1: - return process.nextTick(fn); - case 2: - return process.nextTick(function afterTickOne() { - fn.call(null, arg1); - }); - case 3: - return process.nextTick(function afterTickTwo() { - fn.call(null, arg1, arg2); - }); - case 4: - return process.nextTick(function afterTickThree() { - fn.call(null, arg1, arg2, arg3); - }); - default: - args = new Array(len - 1); - i = 0; - while (i < args.length) { - args[i++] = arguments[i]; + + return null +} + +Splitter.prototype.flush = function () { + if (this.cache.length) return this.cache +} + +function unpad (last) { + var padded = last[15] + if (padded < 1 || padded > 16) { + throw new Error('unable to decrypt data') + } + var i = -1 + while (++i < padded) { + if (last[(i + (16 - padded))] !== padded) { + throw new Error('unable to decrypt data') } - return process.nextTick(function afterTick() { - fn.apply(null, args); - }); } + if (padded === 16) return + + return last.slice(0, 16 - padded) } +function createDecipheriv (suite, password, iv) { + var config = MODES[suite.toLowerCase()] + if (!config) throw new TypeError('invalid suite type') -}).call(this,require('_process')) -},{"_process":122}],122:[function(require,module,exports){ -// shim for using process in browser -var process = module.exports = {}; + if (typeof iv === 'string') iv = Buffer.from(iv) + if (config.mode !== 'GCM' && iv.length !== config.iv) throw new TypeError('invalid iv length ' + iv.length) -// cached from whatever global is present so that test runners that stub it -// don't break things. But we need to wrap it in a try catch in case it is -// wrapped in strict mode code which doesn't define any globals. It's inside a -// function because try/catches deoptimize in certain engines. + if (typeof password === 'string') password = Buffer.from(password) + if (password.length !== config.key / 8) throw new TypeError('invalid key length ' + password.length) -var cachedSetTimeout; -var cachedClearTimeout; + if (config.type === 'stream') { + return new StreamCipher(config.module, password, iv, true) + } else if (config.type === 'auth') { + return new AuthCipher(config.module, password, iv, true) + } -function defaultSetTimout() { - throw new Error('setTimeout has not been defined'); + return new Decipher(config.module, password, iv) } -function defaultClearTimeout () { - throw new Error('clearTimeout has not been defined'); + +function createDecipher (suite, password) { + var config = MODES[suite.toLowerCase()] + if (!config) throw new TypeError('invalid suite type') + + var keys = ebtk(password, false, config.key, config.iv) + return createDecipheriv(suite, keys.key, keys.iv) } -(function () { - try { - if (typeof setTimeout === 'function') { - cachedSetTimeout = setTimeout; - } else { - cachedSetTimeout = defaultSetTimout; - } - } catch (e) { - cachedSetTimeout = defaultSetTimout; - } - try { - if (typeof clearTimeout === 'function') { - cachedClearTimeout = clearTimeout; - } else { - cachedClearTimeout = defaultClearTimeout; - } - } catch (e) { - cachedClearTimeout = defaultClearTimeout; - } -} ()) -function runTimeout(fun) { - if (cachedSetTimeout === setTimeout) { - //normal enviroments in sane situations - return setTimeout(fun, 0); - } - // if setTimeout wasn't available but was latter defined - if ((cachedSetTimeout === defaultSetTimout || !cachedSetTimeout) && setTimeout) { - cachedSetTimeout = setTimeout; - return setTimeout(fun, 0); - } - try { - // when when somebody has screwed with setTimeout but no I.E. maddness - return cachedSetTimeout(fun, 0); - } catch(e){ - try { - // When we are in I.E. but the script has been evaled so I.E. doesn't trust the global object when called normally - return cachedSetTimeout.call(null, fun, 0); - } catch(e){ - // same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error - return cachedSetTimeout.call(this, fun, 0); - } - } +exports.createDecipher = createDecipher +exports.createDecipheriv = createDecipheriv + +},{"./aes":69,"./authCipher":70,"./modes":82,"./streamCipher":85,"cipher-base":101,"evp_bytestokey":136,"inherits":153,"safe-buffer":199}],73:[function(require,module,exports){ +var MODES = require('./modes') +var AuthCipher = require('./authCipher') +var Buffer = require('safe-buffer').Buffer +var StreamCipher = require('./streamCipher') +var Transform = require('cipher-base') +var aes = require('./aes') +var ebtk = require('evp_bytestokey') +var inherits = require('inherits') + +function Cipher (mode, key, iv) { + Transform.call(this) + this._cache = new Splitter() + this._cipher = new aes.AES(key) + this._prev = Buffer.from(iv) + this._mode = mode + this._autopadding = true } -function runClearTimeout(marker) { - if (cachedClearTimeout === clearTimeout) { - //normal enviroments in sane situations - return clearTimeout(marker); - } - // if clearTimeout wasn't available but was latter defined - if ((cachedClearTimeout === defaultClearTimeout || !cachedClearTimeout) && clearTimeout) { - cachedClearTimeout = clearTimeout; - return clearTimeout(marker); - } - try { - // when when somebody has screwed with setTimeout but no I.E. maddness - return cachedClearTimeout(marker); - } catch (e){ - try { - // When we are in I.E. but the script has been evaled so I.E. doesn't trust the global object when called normally - return cachedClearTimeout.call(null, marker); - } catch (e){ - // same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error. - // Some versions of I.E. have different rules for clearTimeout vs setTimeout - return cachedClearTimeout.call(this, marker); - } - } +inherits(Cipher, Transform) + +Cipher.prototype._update = function (data) { + this._cache.add(data) + var chunk + var thing + var out = [] + while ((chunk = this._cache.get())) { + thing = this._mode.encrypt(this, chunk) + out.push(thing) + } + return Buffer.concat(out) } -var queue = []; -var draining = false; -var currentQueue; -var queueIndex = -1; -function cleanUpNextTick() { - if (!draining || !currentQueue) { - return; - } - draining = false; - if (currentQueue.length) { - queue = currentQueue.concat(queue); - } else { - queueIndex = -1; - } - if (queue.length) { - drainQueue(); - } +var PADDING = Buffer.alloc(16, 0x10) + +Cipher.prototype._final = function () { + var chunk = this._cache.flush() + if (this._autopadding) { + chunk = this._mode.encrypt(this, chunk) + this._cipher.scrub() + return chunk + } + + if (!chunk.equals(PADDING)) { + this._cipher.scrub() + throw new Error('data not multiple of block length') + } } -function drainQueue() { - if (draining) { - return; - } - var timeout = runTimeout(cleanUpNextTick); - draining = true; +Cipher.prototype.setAutoPadding = function (setTo) { + this._autopadding = !!setTo + return this +} - var len = queue.length; - while(len) { - currentQueue = queue; - queue = []; - while (++queueIndex < len) { - if (currentQueue) { - currentQueue[queueIndex].run(); - } - } - queueIndex = -1; - len = queue.length; - } - currentQueue = null; - draining = false; - runClearTimeout(timeout); +function Splitter () { + this.cache = Buffer.allocUnsafe(0) } -process.nextTick = function (fun) { - var args = new Array(arguments.length - 1); - if (arguments.length > 1) { - for (var i = 1; i < arguments.length; i++) { - args[i - 1] = arguments[i]; - } - } - queue.push(new Item(fun, args)); - if (queue.length === 1 && !draining) { - runTimeout(drainQueue); - } -}; +Splitter.prototype.add = function (data) { + this.cache = Buffer.concat([this.cache, data]) +} -// v8 likes predictible objects -function Item(fun, array) { - this.fun = fun; - this.array = array; +Splitter.prototype.get = function () { + if (this.cache.length > 15) { + var out = this.cache.slice(0, 16) + this.cache = this.cache.slice(16) + return out + } + return null } -Item.prototype.run = function () { - this.fun.apply(null, this.array); -}; -process.title = 'browser'; -process.browser = true; -process.env = {}; -process.argv = []; -process.version = ''; // empty string to avoid regexp issues -process.versions = {}; -function noop() {} +Splitter.prototype.flush = function () { + var len = 16 - this.cache.length + var padBuff = Buffer.allocUnsafe(len) -process.on = noop; -process.addListener = noop; -process.once = noop; -process.off = noop; -process.removeListener = noop; -process.removeAllListeners = noop; -process.emit = noop; -process.prependListener = noop; -process.prependOnceListener = noop; + var i = -1 + while (++i < len) { + padBuff.writeUInt8(len, i) + } -process.listeners = function (name) { return [] } + return Buffer.concat([this.cache, padBuff]) +} -process.binding = function (name) { - throw new Error('process.binding is not supported'); -}; +function createCipheriv (suite, password, iv) { + var config = MODES[suite.toLowerCase()] + if (!config) throw new TypeError('invalid suite type') -process.cwd = function () { return '/' }; -process.chdir = function (dir) { - throw new Error('process.chdir is not supported'); -}; -process.umask = function() { return 0; }; + if (typeof password === 'string') password = Buffer.from(password) + if (password.length !== config.key / 8) throw new TypeError('invalid key length ' + password.length) -},{}],123:[function(require,module,exports){ -exports.publicEncrypt = require('./publicEncrypt') -exports.privateDecrypt = require('./privateDecrypt') + if (typeof iv === 'string') iv = Buffer.from(iv) + if (config.mode !== 'GCM' && iv.length !== config.iv) throw new TypeError('invalid iv length ' + iv.length) -exports.privateEncrypt = function privateEncrypt (key, buf) { - return exports.publicEncrypt(key, buf, true) + if (config.type === 'stream') { + return new StreamCipher(config.module, password, iv) + } else if (config.type === 'auth') { + return new AuthCipher(config.module, password, iv) + } + + return new Cipher(config.module, password, iv) } -exports.publicDecrypt = function publicDecrypt (key, buf) { - return exports.privateDecrypt(key, buf, true) +function createCipher (suite, password) { + var config = MODES[suite.toLowerCase()] + if (!config) throw new TypeError('invalid suite type') + + var keys = ebtk(password, false, config.key, config.iv) + return createCipheriv(suite, keys.key, keys.iv) } -},{"./privateDecrypt":125,"./publicEncrypt":126}],124:[function(require,module,exports){ -var createHash = require('create-hash') +exports.createCipheriv = createCipheriv +exports.createCipher = createCipher + +},{"./aes":69,"./authCipher":70,"./modes":82,"./streamCipher":85,"cipher-base":101,"evp_bytestokey":136,"inherits":153,"safe-buffer":199}],74:[function(require,module,exports){ var Buffer = require('safe-buffer').Buffer +var ZEROES = Buffer.alloc(16, 0) -module.exports = function (seed, len) { - var t = Buffer.alloc(0) - var i = 0 - var c - while (t.length < len) { - c = i2ops(i++) - t = Buffer.concat([t, createHash('sha1').update(seed).update(c).digest()]) - } - return t.slice(0, len) +function toArray (buf) { + return [ + buf.readUInt32BE(0), + buf.readUInt32BE(4), + buf.readUInt32BE(8), + buf.readUInt32BE(12) + ] } -function i2ops (c) { - var out = Buffer.allocUnsafe(4) - out.writeUInt32BE(c, 0) - return out +function fromArray (out) { + var buf = Buffer.allocUnsafe(16) + buf.writeUInt32BE(out[0] >>> 0, 0) + buf.writeUInt32BE(out[1] >>> 0, 4) + buf.writeUInt32BE(out[2] >>> 0, 8) + buf.writeUInt32BE(out[3] >>> 0, 12) + return buf } -},{"create-hash":56,"safe-buffer":148}],125:[function(require,module,exports){ -var parseKeys = require('parse-asn1') -var mgf = require('./mgf') -var xor = require('./xor') -var BN = require('bn.js') -var crt = require('browserify-rsa') -var createHash = require('create-hash') -var withPublic = require('./withPublic') -var Buffer = require('safe-buffer').Buffer +function GHASH (key) { + this.h = key + this.state = Buffer.alloc(16, 0) + this.cache = Buffer.allocUnsafe(0) +} -module.exports = function privateDecrypt (privateKey, enc, reverse) { - var padding - if (privateKey.padding) { - padding = privateKey.padding - } else if (reverse) { - padding = 1 - } else { - padding = 4 +// from http://bitwiseshiftleft.github.io/sjcl/doc/symbols/src/core_gcm.js.html +// by Juho Vähä-Herttua +GHASH.prototype.ghash = function (block) { + var i = -1 + while (++i < block.length) { + this.state[i] ^= block[i] } + this._multiply() +} - var key = parseKeys(privateKey) - var k = key.modulus.byteLength() - if (enc.length > k || new BN(enc).cmp(key.modulus) >= 0) { - throw new Error('decryption error') - } - var msg - if (reverse) { - msg = withPublic(new BN(enc), key) - } else { - msg = crt(enc, key) - } - var zBuffer = Buffer.alloc(k - msg.length) - msg = Buffer.concat([zBuffer, msg], k) - if (padding === 4) { - return oaep(key, msg) - } else if (padding === 1) { - return pkcs1(key, msg, reverse) - } else if (padding === 3) { - return msg - } else { - throw new Error('unknown padding') +GHASH.prototype._multiply = function () { + var Vi = toArray(this.h) + var Zi = [0, 0, 0, 0] + var j, xi, lsbVi + var i = -1 + while (++i < 128) { + xi = (this.state[~~(i / 8)] & (1 << (7 - (i % 8)))) !== 0 + if (xi) { + // Z_i+1 = Z_i ^ V_i + Zi[0] ^= Vi[0] + Zi[1] ^= Vi[1] + Zi[2] ^= Vi[2] + Zi[3] ^= Vi[3] + } + + // Store the value of LSB(V_i) + lsbVi = (Vi[3] & 1) !== 0 + + // V_i+1 = V_i >> 1 + for (j = 3; j > 0; j--) { + Vi[j] = (Vi[j] >>> 1) | ((Vi[j - 1] & 1) << 31) + } + Vi[0] = Vi[0] >>> 1 + + // If LSB(V_i) is 1, V_i+1 = (V_i >> 1) ^ R + if (lsbVi) { + Vi[0] = Vi[0] ^ (0xe1 << 24) + } } + this.state = fromArray(Zi) } -function oaep (key, msg) { - var k = key.modulus.byteLength() - var iHash = createHash('sha1').update(Buffer.alloc(0)).digest() - var hLen = iHash.length - if (msg[0] !== 0) { - throw new Error('decryption error') - } - var maskedSeed = msg.slice(1, hLen + 1) - var maskedDb = msg.slice(hLen + 1) - var seed = xor(maskedSeed, mgf(maskedDb, hLen)) - var db = xor(maskedDb, mgf(seed, k - hLen - 1)) - if (compare(iHash, db.slice(0, hLen))) { - throw new Error('decryption error') - } - var i = hLen - while (db[i] === 0) { - i++ - } - if (db[i++] !== 1) { - throw new Error('decryption error') +GHASH.prototype.update = function (buf) { + this.cache = Buffer.concat([this.cache, buf]) + var chunk + while (this.cache.length >= 16) { + chunk = this.cache.slice(0, 16) + this.cache = this.cache.slice(16) + this.ghash(chunk) } - return db.slice(i) } -function pkcs1 (key, msg, reverse) { - var p1 = msg.slice(0, 2) - var i = 2 - var status = 0 - while (msg[i++] !== 0) { - if (i >= msg.length) { - status++ - break - } +GHASH.prototype.final = function (abl, bl) { + if (this.cache.length) { + this.ghash(Buffer.concat([this.cache, ZEROES], 16)) } - var ps = msg.slice(2, i - 1) - if ((p1.toString('hex') !== '0002' && !reverse) || (p1.toString('hex') !== '0001' && reverse)) { - status++ - } - if (ps.length < 8) { - status++ - } - if (status) { - throw new Error('decryption error') - } - return msg.slice(i) + this.ghash(fromArray([0, abl, 0, bl])) + return this.state } -function compare (a, b) { - a = Buffer.from(a) - b = Buffer.from(b) - var dif = 0 - var len = a.length - if (a.length !== b.length) { - dif++ - len = Math.min(a.length, b.length) - } - var i = -1 - while (++i < len) { - dif += (a[i] ^ b[i]) + +module.exports = GHASH + +},{"safe-buffer":199}],75:[function(require,module,exports){ +function incr32 (iv) { + var len = iv.length + var item + while (len--) { + item = iv.readUInt8(len) + if (item === 255) { + iv.writeUInt8(0, len) + } else { + item++ + iv.writeUInt8(item, len) + break + } } - return dif } +module.exports = incr32 -},{"./mgf":124,"./withPublic":127,"./xor":128,"bn.js":20,"browserify-rsa":43,"create-hash":56,"parse-asn1":115,"safe-buffer":148}],126:[function(require,module,exports){ -var parseKeys = require('parse-asn1') -var randomBytes = require('randombytes') -var createHash = require('create-hash') -var mgf = require('./mgf') -var xor = require('./xor') -var BN = require('bn.js') -var withPublic = require('./withPublic') -var crt = require('browserify-rsa') -var Buffer = require('safe-buffer').Buffer +},{}],76:[function(require,module,exports){ +var xor = require('buffer-xor') -module.exports = function publicEncrypt (publicKey, msg, reverse) { - var padding - if (publicKey.padding) { - padding = publicKey.padding - } else if (reverse) { - padding = 1 - } else { - padding = 4 - } - var key = parseKeys(publicKey) - var paddedMsg - if (padding === 4) { - paddedMsg = oaep(key, msg) - } else if (padding === 1) { - paddedMsg = pkcs1(key, msg, reverse) - } else if (padding === 3) { - paddedMsg = new BN(msg) - if (paddedMsg.cmp(key.modulus) >= 0) { - throw new Error('data too long for modulus') - } - } else { - throw new Error('unknown padding') - } - if (reverse) { - return crt(paddedMsg, key) - } else { - return withPublic(paddedMsg, key) - } -} +exports.encrypt = function (self, block) { + var data = xor(block, self._prev) -function oaep (key, msg) { - var k = key.modulus.byteLength() - var mLen = msg.length - var iHash = createHash('sha1').update(Buffer.alloc(0)).digest() - var hLen = iHash.length - var hLen2 = 2 * hLen - if (mLen > k - hLen2 - 2) { - throw new Error('message too long') - } - var ps = Buffer.alloc(k - mLen - hLen2 - 2) - var dblen = k - hLen - 1 - var seed = randomBytes(hLen) - var maskedDb = xor(Buffer.concat([iHash, ps, Buffer.alloc(1, 1), msg], dblen), mgf(seed, dblen)) - var maskedSeed = xor(seed, mgf(maskedDb, hLen)) - return new BN(Buffer.concat([Buffer.alloc(1), maskedSeed, maskedDb], k)) -} -function pkcs1 (key, msg, reverse) { - var mLen = msg.length - var k = key.modulus.byteLength() - if (mLen > k - 11) { - throw new Error('message too long') - } - var ps - if (reverse) { - ps = Buffer.alloc(k - mLen - 3, 0xff) - } else { - ps = nonZero(k - mLen - 3) - } - return new BN(Buffer.concat([Buffer.from([0, reverse ? 1 : 2]), ps, Buffer.alloc(1), msg], k)) -} -function nonZero (len) { - var out = Buffer.allocUnsafe(len) - var i = 0 - var cache = randomBytes(len * 2) - var cur = 0 - var num - while (i < len) { - if (cur === cache.length) { - cache = randomBytes(len * 2) - cur = 0 - } - num = cache[cur++] - if (num) { - out[i++] = num - } - } - return out + self._prev = self._cipher.encryptBlock(data) + return self._prev } -},{"./mgf":124,"./withPublic":127,"./xor":128,"bn.js":20,"browserify-rsa":43,"create-hash":56,"parse-asn1":115,"randombytes":132,"safe-buffer":148}],127:[function(require,module,exports){ -var BN = require('bn.js') -var Buffer = require('safe-buffer').Buffer - -function withPublic (paddedMsg, key) { - return Buffer.from(paddedMsg - .toRed(BN.mont(key.modulus)) - .redPow(new BN(key.publicExponent)) - .fromRed() - .toArray()) -} +exports.decrypt = function (self, block) { + var pad = self._prev -module.exports = withPublic + self._prev = block + var out = self._cipher.decryptBlock(block) -},{"bn.js":20,"safe-buffer":148}],128:[function(require,module,exports){ -module.exports = function xor (a, b) { - var len = a.length - var i = -1 - while (++i < len) { - a[i] ^= b[i] - } - return a + return xor(out, pad) } -},{}],129:[function(require,module,exports){ -// Copyright Joyent, Inc. and other Node contributors. -// -// Permission is hereby granted, free of charge, to any person obtaining a -// copy of this software and associated documentation files (the -// "Software"), to deal in the Software without restriction, including -// without limitation the rights to use, copy, modify, merge, publish, -// distribute, sublicense, and/or sell copies of the Software, and to permit -// persons to whom the Software is furnished to do so, subject to the -// following conditions: -// -// The above copyright notice and this permission notice shall be included -// in all copies or substantial portions of the Software. -// -// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS -// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF -// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN -// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, -// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR -// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE -// USE OR OTHER DEALINGS IN THE SOFTWARE. - -'use strict'; +},{"buffer-xor":99}],77:[function(require,module,exports){ +var Buffer = require('safe-buffer').Buffer +var xor = require('buffer-xor') -// If obj.hasOwnProperty has been overridden, then calling -// obj.hasOwnProperty(prop) will break. -// See: https://github.com/joyent/node/issues/1707 -function hasOwnProperty(obj, prop) { - return Object.prototype.hasOwnProperty.call(obj, prop); +function encryptStart (self, data, decrypt) { + var len = data.length + var out = xor(data, self._cache) + self._cache = self._cache.slice(len) + self._prev = Buffer.concat([self._prev, decrypt ? data : out]) + return out } -module.exports = function(qs, sep, eq, options) { - sep = sep || '&'; - eq = eq || '='; - var obj = {}; - - if (typeof qs !== 'string' || qs.length === 0) { - return obj; - } - - var regexp = /\+/g; - qs = qs.split(sep); - - var maxKeys = 1000; - if (options && typeof options.maxKeys === 'number') { - maxKeys = options.maxKeys; - } - - var len = qs.length; - // maxKeys <= 0 means that we should not limit keys count - if (maxKeys > 0 && len > maxKeys) { - len = maxKeys; - } - - for (var i = 0; i < len; ++i) { - var x = qs[i].replace(regexp, '%20'), - idx = x.indexOf(eq), - kstr, vstr, k, v; +exports.encrypt = function (self, data, decrypt) { + var out = Buffer.allocUnsafe(0) + var len - if (idx >= 0) { - kstr = x.substr(0, idx); - vstr = x.substr(idx + 1); - } else { - kstr = x; - vstr = ''; + while (data.length) { + if (self._cache.length === 0) { + self._cache = self._cipher.encryptBlock(self._prev) + self._prev = Buffer.allocUnsafe(0) } - k = decodeURIComponent(kstr); - v = decodeURIComponent(vstr); - - if (!hasOwnProperty(obj, k)) { - obj[k] = v; - } else if (isArray(obj[k])) { - obj[k].push(v); + if (self._cache.length <= data.length) { + len = self._cache.length + out = Buffer.concat([out, encryptStart(self, data.slice(0, len), decrypt)]) + data = data.slice(len) } else { - obj[k] = [obj[k], v]; + out = Buffer.concat([out, encryptStart(self, data, decrypt)]) + break } } - return obj; -}; - -var isArray = Array.isArray || function (xs) { - return Object.prototype.toString.call(xs) === '[object Array]'; -}; - -},{}],130:[function(require,module,exports){ -// Copyright Joyent, Inc. and other Node contributors. -// -// Permission is hereby granted, free of charge, to any person obtaining a -// copy of this software and associated documentation files (the -// "Software"), to deal in the Software without restriction, including -// without limitation the rights to use, copy, modify, merge, publish, -// distribute, sublicense, and/or sell copies of the Software, and to permit -// persons to whom the Software is furnished to do so, subject to the -// following conditions: -// -// The above copyright notice and this permission notice shall be included -// in all copies or substantial portions of the Software. -// -// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS -// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF -// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN -// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, -// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR -// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE -// USE OR OTHER DEALINGS IN THE SOFTWARE. - -'use strict'; - -var stringifyPrimitive = function(v) { - switch (typeof v) { - case 'string': - return v; - - case 'boolean': - return v ? 'true' : 'false'; - - case 'number': - return isFinite(v) ? v : ''; + return out +} - default: - return ''; - } -}; +},{"buffer-xor":99,"safe-buffer":199}],78:[function(require,module,exports){ +var Buffer = require('safe-buffer').Buffer -module.exports = function(obj, sep, eq, name) { - sep = sep || '&'; - eq = eq || '='; - if (obj === null) { - obj = undefined; +function encryptByte (self, byteParam, decrypt) { + var pad + var i = -1 + var len = 8 + var out = 0 + var bit, value + while (++i < len) { + pad = self._cipher.encryptBlock(self._prev) + bit = (byteParam & (1 << (7 - i))) ? 0x80 : 0 + value = pad[0] ^ bit + out += ((value & 0x80) >> (i % 8)) + self._prev = shiftIn(self._prev, decrypt ? bit : value) } + return out +} - if (typeof obj === 'object') { - return map(objectKeys(obj), function(k) { - var ks = encodeURIComponent(stringifyPrimitive(k)) + eq; - if (isArray(obj[k])) { - return map(obj[k], function(v) { - return ks + encodeURIComponent(stringifyPrimitive(v)); - }).join(sep); - } else { - return ks + encodeURIComponent(stringifyPrimitive(obj[k])); - } - }).join(sep); +function shiftIn (buffer, value) { + var len = buffer.length + var i = -1 + var out = Buffer.allocUnsafe(buffer.length) + buffer = Buffer.concat([buffer, Buffer.from([value])]) + while (++i < len) { + out[i] = buffer[i] << 1 | buffer[i + 1] >> (7) } - if (!name) return ''; - return encodeURIComponent(stringifyPrimitive(name)) + eq + - encodeURIComponent(stringifyPrimitive(obj)); -}; - -var isArray = Array.isArray || function (xs) { - return Object.prototype.toString.call(xs) === '[object Array]'; -}; - -function map (xs, f) { - if (xs.map) return xs.map(f); - var res = []; - for (var i = 0; i < xs.length; i++) { - res.push(f(xs[i], i)); - } - return res; + return out } -var objectKeys = Object.keys || function (obj) { - var res = []; - for (var key in obj) { - if (Object.prototype.hasOwnProperty.call(obj, key)) res.push(key); - } - return res; -}; - -},{}],131:[function(require,module,exports){ -'use strict'; - -exports.decode = exports.parse = require('./decode'); -exports.encode = exports.stringify = require('./encode'); +exports.encrypt = function (self, chunk, decrypt) { + var len = chunk.length + var out = Buffer.allocUnsafe(len) + var i = -1 -},{"./decode":129,"./encode":130}],132:[function(require,module,exports){ -(function (process,global){ -'use strict' + while (++i < len) { + out[i] = encryptByte(self, chunk[i], decrypt) + } -function oldBrowser () { - throw new Error('Secure random number generation is not supported by this browser.\nUse Chrome, Firefox or Internet Explorer 11') + return out } +},{"safe-buffer":199}],79:[function(require,module,exports){ var Buffer = require('safe-buffer').Buffer -var crypto = global.crypto || global.msCrypto -if (crypto && crypto.getRandomValues) { - module.exports = randomBytes -} else { - module.exports = oldBrowser -} +function encryptByte (self, byteParam, decrypt) { + var pad = self._cipher.encryptBlock(self._prev) + var out = pad[0] ^ byteParam -function randomBytes (size, cb) { - // phantomjs needs to throw - if (size > 65536) throw new Error('requested too many random bytes') - // in case browserify isn't using the Uint8Array version - var rawBytes = new global.Uint8Array(size) + self._prev = Buffer.concat([ + self._prev.slice(1), + Buffer.from([decrypt ? byteParam : out]) + ]) - // This will not work in older browsers. - // See https://developer.mozilla.org/en-US/docs/Web/API/window.crypto.getRandomValues - if (size > 0) { // getRandomValues fails on IE if size == 0 - crypto.getRandomValues(rawBytes) - } + return out +} - // XXX: phantomjs doesn't like a buffer being passed here - var bytes = Buffer.from(rawBytes.buffer) +exports.encrypt = function (self, chunk, decrypt) { + var len = chunk.length + var out = Buffer.allocUnsafe(len) + var i = -1 - if (typeof cb === 'function') { - return process.nextTick(function () { - cb(null, bytes) - }) + while (++i < len) { + out[i] = encryptByte(self, chunk[i], decrypt) } - return bytes + return out } -}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {}) -},{"_process":122,"safe-buffer":148}],133:[function(require,module,exports){ -(function (process,global){ -'use strict' +},{"safe-buffer":199}],80:[function(require,module,exports){ +var xor = require('buffer-xor') +var Buffer = require('safe-buffer').Buffer +var incr32 = require('../incr32') -function oldBrowser () { - throw new Error('secure random number generation not supported by this browser\nuse chrome, FireFox or Internet Explorer 11') +function getBlock (self) { + var out = self._cipher.encryptBlockRaw(self._prev) + incr32(self._prev) + return out } -var safeBuffer = require('safe-buffer') -var randombytes = require('randombytes') -var Buffer = safeBuffer.Buffer -var kBufferMaxLength = safeBuffer.kMaxLength -var crypto = global.crypto || global.msCrypto -var kMaxUint32 = Math.pow(2, 32) - 1 -function assertOffset (offset, length) { - if (typeof offset !== 'number' || offset !== offset) { // eslint-disable-line no-self-compare - throw new TypeError('offset must be a number') - } - - if (offset > kMaxUint32 || offset < 0) { - throw new TypeError('offset must be a uint32') - } - if (offset > kBufferMaxLength || offset > length) { - throw new RangeError('offset out of range') +var blockSize = 16 +exports.encrypt = function (self, chunk) { + var chunkNum = Math.ceil(chunk.length / blockSize) + var start = self._cache.length + self._cache = Buffer.concat([ + self._cache, + Buffer.allocUnsafe(chunkNum * blockSize) + ]) + for (var i = 0; i < chunkNum; i++) { + var out = getBlock(self) + var offset = start + i * blockSize + self._cache.writeUInt32BE(out[0], offset + 0) + self._cache.writeUInt32BE(out[1], offset + 4) + self._cache.writeUInt32BE(out[2], offset + 8) + self._cache.writeUInt32BE(out[3], offset + 12) } + var pad = self._cache.slice(0, chunk.length) + self._cache = self._cache.slice(chunk.length) + return xor(chunk, pad) } -function assertSize (size, offset, length) { - if (typeof size !== 'number' || size !== size) { // eslint-disable-line no-self-compare - throw new TypeError('size must be a number') - } - - if (size > kMaxUint32 || size < 0) { - throw new TypeError('size must be a uint32') - } - - if (size + offset > length || size > kBufferMaxLength) { - throw new RangeError('buffer too small') - } -} -if ((crypto && crypto.getRandomValues) || !process.browser) { - exports.randomFill = randomFill - exports.randomFillSync = randomFillSync -} else { - exports.randomFill = oldBrowser - exports.randomFillSync = oldBrowser +},{"../incr32":75,"buffer-xor":99,"safe-buffer":199}],81:[function(require,module,exports){ +exports.encrypt = function (self, block) { + return self._cipher.encryptBlock(block) } -function randomFill (buf, offset, size, cb) { - if (!Buffer.isBuffer(buf) && !(buf instanceof global.Uint8Array)) { - throw new TypeError('"buf" argument must be a Buffer or Uint8Array') - } - if (typeof offset === 'function') { - cb = offset - offset = 0 - size = buf.length - } else if (typeof size === 'function') { - cb = size - size = buf.length - offset - } else if (typeof cb !== 'function') { - throw new TypeError('"cb" argument must be a function') - } - assertOffset(offset, buf.length) - assertSize(size, offset, buf.length) - return actualFill(buf, offset, size, cb) +exports.decrypt = function (self, block) { + return self._cipher.decryptBlock(block) } -function actualFill (buf, offset, size, cb) { - if (process.browser) { - var ourBuf = buf.buffer - var uint = new Uint8Array(ourBuf, offset, size) - crypto.getRandomValues(uint) - if (cb) { - process.nextTick(function () { - cb(null, buf) - }) - return - } - return buf - } - if (cb) { - randombytes(size, function (err, bytes) { - if (err) { - return cb(err) - } - bytes.copy(buf, offset) - cb(null, buf) - }) - return - } - var bytes = randombytes(size) - bytes.copy(buf, offset) - return buf +},{}],82:[function(require,module,exports){ +var modeModules = { + ECB: require('./ecb'), + CBC: require('./cbc'), + CFB: require('./cfb'), + CFB8: require('./cfb8'), + CFB1: require('./cfb1'), + OFB: require('./ofb'), + CTR: require('./ctr'), + GCM: require('./ctr') } -function randomFillSync (buf, offset, size) { - if (typeof offset === 'undefined') { - offset = 0 - } - if (!Buffer.isBuffer(buf) && !(buf instanceof global.Uint8Array)) { - throw new TypeError('"buf" argument must be a Buffer or Uint8Array') - } - - assertOffset(offset, buf.length) - - if (size === undefined) size = buf.length - offset - assertSize(size, offset, buf.length) +var modes = require('./list.json') - return actualFill(buf, offset, size) +for (var key in modes) { + modes[key].module = modeModules[modes[key].mode] } -}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {}) -},{"_process":122,"randombytes":132,"safe-buffer":148}],134:[function(require,module,exports){ -module.exports = require('./lib/_stream_duplex.js'); +module.exports = modes -},{"./lib/_stream_duplex.js":135}],135:[function(require,module,exports){ -// Copyright Joyent, Inc. and other Node contributors. -// -// Permission is hereby granted, free of charge, to any person obtaining a -// copy of this software and associated documentation files (the -// "Software"), to deal in the Software without restriction, including -// without limitation the rights to use, copy, modify, merge, publish, -// distribute, sublicense, and/or sell copies of the Software, and to permit -// persons to whom the Software is furnished to do so, subject to the -// following conditions: -// -// The above copyright notice and this permission notice shall be included -// in all copies or substantial portions of the Software. -// -// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS -// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF -// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN -// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, -// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR -// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE -// USE OR OTHER DEALINGS IN THE SOFTWARE. - -// a duplex stream is just a stream that is both readable and writable. -// Since JS doesn't have multiple prototypal inheritance, this class -// prototypally inherits from Readable, and then parasitically from -// Writable. - -'use strict'; - -/**/ - -var pna = require('process-nextick-args'); -/**/ - -/**/ -var objectKeys = Object.keys || function (obj) { - var keys = []; - for (var key in obj) { - keys.push(key); - }return keys; -}; -/**/ - -module.exports = Duplex; - -/**/ -var util = require('core-util-is'); -util.inherits = require('inherits'); -/**/ - -var Readable = require('./_stream_readable'); -var Writable = require('./_stream_writable'); - -util.inherits(Duplex, Readable); - -{ - // avoid scope creep, the keys array can then be collected - var keys = objectKeys(Writable.prototype); - for (var v = 0; v < keys.length; v++) { - var method = keys[v]; - if (!Duplex.prototype[method]) Duplex.prototype[method] = Writable.prototype[method]; +},{"./cbc":76,"./cfb":77,"./cfb1":78,"./cfb8":79,"./ctr":80,"./ecb":81,"./list.json":83,"./ofb":84}],83:[function(require,module,exports){ +module.exports={ + "aes-128-ecb": { + "cipher": "AES", + "key": 128, + "iv": 0, + "mode": "ECB", + "type": "block" + }, + "aes-192-ecb": { + "cipher": "AES", + "key": 192, + "iv": 0, + "mode": "ECB", + "type": "block" + }, + "aes-256-ecb": { + "cipher": "AES", + "key": 256, + "iv": 0, + "mode": "ECB", + "type": "block" + }, + "aes-128-cbc": { + "cipher": "AES", + "key": 128, + "iv": 16, + "mode": "CBC", + "type": "block" + }, + "aes-192-cbc": { + "cipher": "AES", + "key": 192, + "iv": 16, + "mode": "CBC", + "type": "block" + }, + "aes-256-cbc": { + "cipher": "AES", + "key": 256, + "iv": 16, + "mode": "CBC", + "type": "block" + }, + "aes128": { + "cipher": "AES", + "key": 128, + "iv": 16, + "mode": "CBC", + "type": "block" + }, + "aes192": { + "cipher": "AES", + "key": 192, + "iv": 16, + "mode": "CBC", + "type": "block" + }, + "aes256": { + "cipher": "AES", + "key": 256, + "iv": 16, + "mode": "CBC", + "type": "block" + }, + "aes-128-cfb": { + "cipher": "AES", + "key": 128, + "iv": 16, + "mode": "CFB", + "type": "stream" + }, + "aes-192-cfb": { + "cipher": "AES", + "key": 192, + "iv": 16, + "mode": "CFB", + "type": "stream" + }, + "aes-256-cfb": { + "cipher": "AES", + "key": 256, + "iv": 16, + "mode": "CFB", + "type": "stream" + }, + "aes-128-cfb8": { + "cipher": "AES", + "key": 128, + "iv": 16, + "mode": "CFB8", + "type": "stream" + }, + "aes-192-cfb8": { + "cipher": "AES", + "key": 192, + "iv": 16, + "mode": "CFB8", + "type": "stream" + }, + "aes-256-cfb8": { + "cipher": "AES", + "key": 256, + "iv": 16, + "mode": "CFB8", + "type": "stream" + }, + "aes-128-cfb1": { + "cipher": "AES", + "key": 128, + "iv": 16, + "mode": "CFB1", + "type": "stream" + }, + "aes-192-cfb1": { + "cipher": "AES", + "key": 192, + "iv": 16, + "mode": "CFB1", + "type": "stream" + }, + "aes-256-cfb1": { + "cipher": "AES", + "key": 256, + "iv": 16, + "mode": "CFB1", + "type": "stream" + }, + "aes-128-ofb": { + "cipher": "AES", + "key": 128, + "iv": 16, + "mode": "OFB", + "type": "stream" + }, + "aes-192-ofb": { + "cipher": "AES", + "key": 192, + "iv": 16, + "mode": "OFB", + "type": "stream" + }, + "aes-256-ofb": { + "cipher": "AES", + "key": 256, + "iv": 16, + "mode": "OFB", + "type": "stream" + }, + "aes-128-ctr": { + "cipher": "AES", + "key": 128, + "iv": 16, + "mode": "CTR", + "type": "stream" + }, + "aes-192-ctr": { + "cipher": "AES", + "key": 192, + "iv": 16, + "mode": "CTR", + "type": "stream" + }, + "aes-256-ctr": { + "cipher": "AES", + "key": 256, + "iv": 16, + "mode": "CTR", + "type": "stream" + }, + "aes-128-gcm": { + "cipher": "AES", + "key": 128, + "iv": 12, + "mode": "GCM", + "type": "auth" + }, + "aes-192-gcm": { + "cipher": "AES", + "key": 192, + "iv": 12, + "mode": "GCM", + "type": "auth" + }, + "aes-256-gcm": { + "cipher": "AES", + "key": 256, + "iv": 12, + "mode": "GCM", + "type": "auth" } } -function Duplex(options) { - if (!(this instanceof Duplex)) return new Duplex(options); - - Readable.call(this, options); - Writable.call(this, options); - - if (options && options.readable === false) this.readable = false; - - if (options && options.writable === false) this.writable = false; - - this.allowHalfOpen = true; - if (options && options.allowHalfOpen === false) this.allowHalfOpen = false; +},{}],84:[function(require,module,exports){ +(function (Buffer){ +var xor = require('buffer-xor') - this.once('end', onend); +function getBlock (self) { + self._prev = self._cipher.encryptBlock(self._prev) + return self._prev } -Object.defineProperty(Duplex.prototype, 'writableHighWaterMark', { - // making it explicit this property is not enumerable - // because otherwise some prototype manipulation in - // userland will fail - enumerable: false, - get: function () { - return this._writableState.highWaterMark; +exports.encrypt = function (self, chunk) { + while (self._cache.length < chunk.length) { + self._cache = Buffer.concat([self._cache, getBlock(self)]) } -}); - -// the no-half-open enforcer -function onend() { - // if we allow half-open state, or if the writable side ended, - // then we're ok. - if (this.allowHalfOpen || this._writableState.ended) return; - - // no more data can be written. - // But allow more writes to happen in this tick. - pna.nextTick(onEndNT, this); -} -function onEndNT(self) { - self.end(); + var pad = self._cache.slice(0, chunk.length) + self._cache = self._cache.slice(chunk.length) + return xor(chunk, pad) } -Object.defineProperty(Duplex.prototype, 'destroyed', { - get: function () { - if (this._readableState === undefined || this._writableState === undefined) { - return false; - } - return this._readableState.destroyed && this._writableState.destroyed; - }, - set: function (value) { - // we ignore the value if the stream - // has not been initialized yet - if (this._readableState === undefined || this._writableState === undefined) { - return; - } - - // backward compatibility, the user is explicitly - // managing destroyed - this._readableState.destroyed = value; - this._writableState.destroyed = value; - } -}); - -Duplex.prototype._destroy = function (err, cb) { - this.push(null); - this.end(); - - pna.nextTick(cb, err); -}; -},{"./_stream_readable":137,"./_stream_writable":139,"core-util-is":54,"inherits":104,"process-nextick-args":121}],136:[function(require,module,exports){ -// Copyright Joyent, Inc. and other Node contributors. -// -// Permission is hereby granted, free of charge, to any person obtaining a -// copy of this software and associated documentation files (the -// "Software"), to deal in the Software without restriction, including -// without limitation the rights to use, copy, modify, merge, publish, -// distribute, sublicense, and/or sell copies of the Software, and to permit -// persons to whom the Software is furnished to do so, subject to the -// following conditions: -// -// The above copyright notice and this permission notice shall be included -// in all copies or substantial portions of the Software. -// -// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS -// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF -// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN -// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, -// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR -// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE -// USE OR OTHER DEALINGS IN THE SOFTWARE. - -// a passthrough stream. -// basically just the most minimal sort of Transform stream. -// Every written chunk gets output as-is. - -'use strict'; - -module.exports = PassThrough; - -var Transform = require('./_stream_transform'); - -/**/ -var util = require('core-util-is'); -util.inherits = require('inherits'); -/**/ - -util.inherits(PassThrough, Transform); +}).call(this,require("buffer").Buffer) +},{"buffer":100,"buffer-xor":99}],85:[function(require,module,exports){ +var aes = require('./aes') +var Buffer = require('safe-buffer').Buffer +var Transform = require('cipher-base') +var inherits = require('inherits') -function PassThrough(options) { - if (!(this instanceof PassThrough)) return new PassThrough(options); +function StreamCipher (mode, key, iv, decrypt) { + Transform.call(this) - Transform.call(this, options); + this._cipher = new aes.AES(key) + this._prev = Buffer.from(iv) + this._cache = Buffer.allocUnsafe(0) + this._secCache = Buffer.allocUnsafe(0) + this._decrypt = decrypt + this._mode = mode } -PassThrough.prototype._transform = function (chunk, encoding, cb) { - cb(null, chunk); -}; -},{"./_stream_transform":138,"core-util-is":54,"inherits":104}],137:[function(require,module,exports){ -(function (process,global){ -// Copyright Joyent, Inc. and other Node contributors. -// -// Permission is hereby granted, free of charge, to any person obtaining a -// copy of this software and associated documentation files (the -// "Software"), to deal in the Software without restriction, including -// without limitation the rights to use, copy, modify, merge, publish, -// distribute, sublicense, and/or sell copies of the Software, and to permit -// persons to whom the Software is furnished to do so, subject to the -// following conditions: -// -// The above copyright notice and this permission notice shall be included -// in all copies or substantial portions of the Software. -// -// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS -// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF -// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN -// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, -// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR -// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE -// USE OR OTHER DEALINGS IN THE SOFTWARE. - -'use strict'; - -/**/ - -var pna = require('process-nextick-args'); -/**/ - -module.exports = Readable; - -/**/ -var isArray = require('isarray'); -/**/ +inherits(StreamCipher, Transform) -/**/ -var Duplex; -/**/ +StreamCipher.prototype._update = function (chunk) { + return this._mode.encrypt(this, chunk, this._decrypt) +} -Readable.ReadableState = ReadableState; +StreamCipher.prototype._final = function () { + this._cipher.scrub() +} -/**/ -var EE = require('events').EventEmitter; +module.exports = StreamCipher -var EElistenerCount = function (emitter, type) { - return emitter.listeners(type).length; -}; -/**/ +},{"./aes":69,"cipher-base":101,"inherits":153,"safe-buffer":199}],86:[function(require,module,exports){ +var DES = require('browserify-des') +var aes = require('browserify-aes/browser') +var aesModes = require('browserify-aes/modes') +var desModes = require('browserify-des/modes') +var ebtk = require('evp_bytestokey') -/**/ -var Stream = require('./internal/streams/stream'); -/**/ +function createCipher (suite, password) { + suite = suite.toLowerCase() -/**/ + var keyLen, ivLen + if (aesModes[suite]) { + keyLen = aesModes[suite].key + ivLen = aesModes[suite].iv + } else if (desModes[suite]) { + keyLen = desModes[suite].key * 8 + ivLen = desModes[suite].iv + } else { + throw new TypeError('invalid suite type') + } -var Buffer = require('safe-buffer').Buffer; -var OurUint8Array = global.Uint8Array || function () {}; -function _uint8ArrayToBuffer(chunk) { - return Buffer.from(chunk); -} -function _isUint8Array(obj) { - return Buffer.isBuffer(obj) || obj instanceof OurUint8Array; + var keys = ebtk(password, false, keyLen, ivLen) + return createCipheriv(suite, keys.key, keys.iv) } -/**/ +function createDecipher (suite, password) { + suite = suite.toLowerCase() -/**/ -var util = require('core-util-is'); -util.inherits = require('inherits'); -/**/ + var keyLen, ivLen + if (aesModes[suite]) { + keyLen = aesModes[suite].key + ivLen = aesModes[suite].iv + } else if (desModes[suite]) { + keyLen = desModes[suite].key * 8 + ivLen = desModes[suite].iv + } else { + throw new TypeError('invalid suite type') + } -/**/ -var debugUtil = require('util'); -var debug = void 0; -if (debugUtil && debugUtil.debuglog) { - debug = debugUtil.debuglog('stream'); -} else { - debug = function () {}; + var keys = ebtk(password, false, keyLen, ivLen) + return createDecipheriv(suite, keys.key, keys.iv) } -/**/ -var BufferList = require('./internal/streams/BufferList'); -var destroyImpl = require('./internal/streams/destroy'); -var StringDecoder; +function createCipheriv (suite, key, iv) { + suite = suite.toLowerCase() + if (aesModes[suite]) return aes.createCipheriv(suite, key, iv) + if (desModes[suite]) return new DES({ key: key, iv: iv, mode: suite }) -util.inherits(Readable, Stream); + throw new TypeError('invalid suite type') +} -var kProxyEvents = ['error', 'close', 'destroy', 'pause', 'resume']; +function createDecipheriv (suite, key, iv) { + suite = suite.toLowerCase() + if (aesModes[suite]) return aes.createDecipheriv(suite, key, iv) + if (desModes[suite]) return new DES({ key: key, iv: iv, mode: suite, decrypt: true }) -function prependListener(emitter, event, fn) { - // Sadly this is not cacheable as some libraries bundle their own - // event emitter implementation with them. - if (typeof emitter.prependListener === 'function') return emitter.prependListener(event, fn); + throw new TypeError('invalid suite type') +} - // This is a hack to make sure that our error handler is attached before any - // userland ones. NEVER DO THIS. This is here only because this code needs - // to continue to work with older versions of Node.js that do not include - // the prependListener() method. The goal is to eventually remove this hack. - if (!emitter._events || !emitter._events[event]) emitter.on(event, fn);else if (isArray(emitter._events[event])) emitter._events[event].unshift(fn);else emitter._events[event] = [fn, emitter._events[event]]; +function getCiphers () { + return Object.keys(desModes).concat(aes.getCiphers()) } -function ReadableState(options, stream) { - Duplex = Duplex || require('./_stream_duplex'); +exports.createCipher = exports.Cipher = createCipher +exports.createCipheriv = exports.Cipheriv = createCipheriv +exports.createDecipher = exports.Decipher = createDecipher +exports.createDecipheriv = exports.Decipheriv = createDecipheriv +exports.listCiphers = exports.getCiphers = getCiphers - options = options || {}; +},{"browserify-aes/browser":71,"browserify-aes/modes":82,"browserify-des":87,"browserify-des/modes":88,"evp_bytestokey":136}],87:[function(require,module,exports){ +var CipherBase = require('cipher-base') +var des = require('des.js') +var inherits = require('inherits') +var Buffer = require('safe-buffer').Buffer - // Duplex streams are both readable and writable, but share - // the same options object. - // However, some cases require setting options to different - // values for the readable and the writable sides of the duplex stream. - // These options can be provided separately as readableXXX and writableXXX. - var isDuplex = stream instanceof Duplex; - - // object stream flag. Used to make read(n) ignore n and to - // make all the buffer merging and length checks go away - this.objectMode = !!options.objectMode; - - if (isDuplex) this.objectMode = this.objectMode || !!options.readableObjectMode; - - // the point at which it stops calling _read() to fill the buffer - // Note: 0 is a valid value, means "don't call _read preemptively ever" - var hwm = options.highWaterMark; - var readableHwm = options.readableHighWaterMark; - var defaultHwm = this.objectMode ? 16 : 16 * 1024; - - if (hwm || hwm === 0) this.highWaterMark = hwm;else if (isDuplex && (readableHwm || readableHwm === 0)) this.highWaterMark = readableHwm;else this.highWaterMark = defaultHwm; - - // cast to ints. - this.highWaterMark = Math.floor(this.highWaterMark); - - // A linked list is used to store data chunks instead of an array because the - // linked list can remove elements from the beginning faster than - // array.shift() - this.buffer = new BufferList(); - this.length = 0; - this.pipes = null; - this.pipesCount = 0; - this.flowing = null; - this.ended = false; - this.endEmitted = false; - this.reading = false; - - // a flag to be able to tell if the event 'readable'/'data' is emitted - // immediately, or on a later tick. We set this to true at first, because - // any actions that shouldn't happen until "later" should generally also - // not happen before the first read call. - this.sync = true; - - // whenever we return null, then we set a flag to say - // that we're awaiting a 'readable' event emission. - this.needReadable = false; - this.emittedReadable = false; - this.readableListening = false; - this.resumeScheduled = false; - - // has it been destroyed - this.destroyed = false; +var modes = { + 'des-ede3-cbc': des.CBC.instantiate(des.EDE), + 'des-ede3': des.EDE, + 'des-ede-cbc': des.CBC.instantiate(des.EDE), + 'des-ede': des.EDE, + 'des-cbc': des.CBC.instantiate(des.DES), + 'des-ecb': des.DES +} +modes.des = modes['des-cbc'] +modes.des3 = modes['des-ede3-cbc'] +module.exports = DES +inherits(DES, CipherBase) +function DES (opts) { + CipherBase.call(this) + var modeName = opts.mode.toLowerCase() + var mode = modes[modeName] + var type + if (opts.decrypt) { + type = 'decrypt' + } else { + type = 'encrypt' + } + var key = opts.key + if (!Buffer.isBuffer(key)) { + key = Buffer.from(key) + } + if (modeName === 'des-ede' || modeName === 'des-ede-cbc') { + key = Buffer.concat([key, key.slice(0, 8)]) + } + var iv = opts.iv + if (!Buffer.isBuffer(iv)) { + iv = Buffer.from(iv) + } + this._des = mode.create({ + key: key, + iv: iv, + type: type + }) +} +DES.prototype._update = function (data) { + return Buffer.from(this._des.update(data)) +} +DES.prototype._final = function () { + return Buffer.from(this._des.final()) +} - // Crypto is kind of old and crusty. Historically, its default string - // encoding is 'binary' so we have to make this configurable. - // Everything else in the universe uses 'utf8', though. - this.defaultEncoding = options.defaultEncoding || 'utf8'; +},{"cipher-base":101,"des.js":109,"inherits":153,"safe-buffer":199}],88:[function(require,module,exports){ +exports['des-ecb'] = { + key: 8, + iv: 0 +} +exports['des-cbc'] = exports.des = { + key: 8, + iv: 8 +} +exports['des-ede3-cbc'] = exports.des3 = { + key: 24, + iv: 8 +} +exports['des-ede3'] = { + key: 24, + iv: 0 +} +exports['des-ede-cbc'] = { + key: 16, + iv: 8 +} +exports['des-ede'] = { + key: 16, + iv: 0 +} - // the number of writers that are awaiting a drain event in .pipe()s - this.awaitDrain = 0; +},{}],89:[function(require,module,exports){ +(function (Buffer){ +var bn = require('bn.js'); +var randomBytes = require('randombytes'); +module.exports = crt; +function blind(priv) { + var r = getr(priv); + var blinder = r.toRed(bn.mont(priv.modulus)) + .redPow(new bn(priv.publicExponent)).fromRed(); + return { + blinder: blinder, + unblinder:r.invm(priv.modulus) + }; +} +function crt(msg, priv) { + var blinds = blind(priv); + var len = priv.modulus.byteLength(); + var mod = bn.mont(priv.modulus); + var blinded = new bn(msg).mul(blinds.blinder).umod(priv.modulus); + var c1 = blinded.toRed(bn.mont(priv.prime1)); + var c2 = blinded.toRed(bn.mont(priv.prime2)); + var qinv = priv.coefficient; + var p = priv.prime1; + var q = priv.prime2; + var m1 = c1.redPow(priv.exponent1); + var m2 = c2.redPow(priv.exponent2); + m1 = m1.fromRed(); + m2 = m2.fromRed(); + var h = m1.isub(m2).imul(qinv).umod(p); + h.imul(q); + m2.iadd(h); + return new Buffer(m2.imul(blinds.unblinder).umod(priv.modulus).toArray(false, len)); +} +crt.getr = getr; +function getr(priv) { + var len = priv.modulus.byteLength(); + var r = new bn(randomBytes(len)); + while (r.cmp(priv.modulus) >= 0 || !r.umod(priv.prime1) || !r.umod(priv.prime2)) { + r = new bn(randomBytes(len)); + } + return r; +} - // if true, a maybeReadMore has been scheduled - this.readingMore = false; +}).call(this,require("buffer").Buffer) +},{"bn.js":66,"buffer":100,"randombytes":182}],90:[function(require,module,exports){ +module.exports = require('./browser/algorithms.json') - this.decoder = null; - this.encoding = null; - if (options.encoding) { - if (!StringDecoder) StringDecoder = require('string_decoder/').StringDecoder; - this.decoder = new StringDecoder(options.encoding); - this.encoding = options.encoding; +},{"./browser/algorithms.json":91}],91:[function(require,module,exports){ +module.exports={ + "sha224WithRSAEncryption": { + "sign": "rsa", + "hash": "sha224", + "id": "302d300d06096086480165030402040500041c" + }, + "RSA-SHA224": { + "sign": "ecdsa/rsa", + "hash": "sha224", + "id": "302d300d06096086480165030402040500041c" + }, + "sha256WithRSAEncryption": { + "sign": "rsa", + "hash": "sha256", + "id": "3031300d060960864801650304020105000420" + }, + "RSA-SHA256": { + "sign": "ecdsa/rsa", + "hash": "sha256", + "id": "3031300d060960864801650304020105000420" + }, + "sha384WithRSAEncryption": { + "sign": "rsa", + "hash": "sha384", + "id": "3041300d060960864801650304020205000430" + }, + "RSA-SHA384": { + "sign": "ecdsa/rsa", + "hash": "sha384", + "id": "3041300d060960864801650304020205000430" + }, + "sha512WithRSAEncryption": { + "sign": "rsa", + "hash": "sha512", + "id": "3051300d060960864801650304020305000440" + }, + "RSA-SHA512": { + "sign": "ecdsa/rsa", + "hash": "sha512", + "id": "3051300d060960864801650304020305000440" + }, + "RSA-SHA1": { + "sign": "rsa", + "hash": "sha1", + "id": "3021300906052b0e03021a05000414" + }, + "ecdsa-with-SHA1": { + "sign": "ecdsa", + "hash": "sha1", + "id": "" + }, + "sha256": { + "sign": "ecdsa", + "hash": "sha256", + "id": "" + }, + "sha224": { + "sign": "ecdsa", + "hash": "sha224", + "id": "" + }, + "sha384": { + "sign": "ecdsa", + "hash": "sha384", + "id": "" + }, + "sha512": { + "sign": "ecdsa", + "hash": "sha512", + "id": "" + }, + "DSA-SHA": { + "sign": "dsa", + "hash": "sha1", + "id": "" + }, + "DSA-SHA1": { + "sign": "dsa", + "hash": "sha1", + "id": "" + }, + "DSA": { + "sign": "dsa", + "hash": "sha1", + "id": "" + }, + "DSA-WITH-SHA224": { + "sign": "dsa", + "hash": "sha224", + "id": "" + }, + "DSA-SHA224": { + "sign": "dsa", + "hash": "sha224", + "id": "" + }, + "DSA-WITH-SHA256": { + "sign": "dsa", + "hash": "sha256", + "id": "" + }, + "DSA-SHA256": { + "sign": "dsa", + "hash": "sha256", + "id": "" + }, + "DSA-WITH-SHA384": { + "sign": "dsa", + "hash": "sha384", + "id": "" + }, + "DSA-SHA384": { + "sign": "dsa", + "hash": "sha384", + "id": "" + }, + "DSA-WITH-SHA512": { + "sign": "dsa", + "hash": "sha512", + "id": "" + }, + "DSA-SHA512": { + "sign": "dsa", + "hash": "sha512", + "id": "" + }, + "DSA-RIPEMD160": { + "sign": "dsa", + "hash": "rmd160", + "id": "" + }, + "ripemd160WithRSA": { + "sign": "rsa", + "hash": "rmd160", + "id": "3021300906052b2403020105000414" + }, + "RSA-RIPEMD160": { + "sign": "rsa", + "hash": "rmd160", + "id": "3021300906052b2403020105000414" + }, + "md5WithRSAEncryption": { + "sign": "rsa", + "hash": "md5", + "id": "3020300c06082a864886f70d020505000410" + }, + "RSA-MD5": { + "sign": "rsa", + "hash": "md5", + "id": "3020300c06082a864886f70d020505000410" } } -function Readable(options) { - Duplex = Duplex || require('./_stream_duplex'); +},{}],92:[function(require,module,exports){ +module.exports={ + "1.3.132.0.10": "secp256k1", + "1.3.132.0.33": "p224", + "1.2.840.10045.3.1.1": "p192", + "1.2.840.10045.3.1.7": "p256", + "1.3.132.0.34": "p384", + "1.3.132.0.35": "p521" +} - if (!(this instanceof Readable)) return new Readable(options); +},{}],93:[function(require,module,exports){ +(function (Buffer){ +var createHash = require('create-hash') +var stream = require('stream') +var inherits = require('inherits') +var sign = require('./sign') +var verify = require('./verify') - this._readableState = new ReadableState(options, this); +var algorithms = require('./algorithms.json') +Object.keys(algorithms).forEach(function (key) { + algorithms[key].id = new Buffer(algorithms[key].id, 'hex') + algorithms[key.toLowerCase()] = algorithms[key] +}) - // legacy - this.readable = true; +function Sign (algorithm) { + stream.Writable.call(this) - if (options) { - if (typeof options.read === 'function') this._read = options.read; + var data = algorithms[algorithm] + if (!data) throw new Error('Unknown message digest') - if (typeof options.destroy === 'function') this._destroy = options.destroy; - } + this._hashType = data.hash + this._hash = createHash(data.hash) + this._tag = data.id + this._signType = data.sign +} +inherits(Sign, stream.Writable) - Stream.call(this); +Sign.prototype._write = function _write (data, _, done) { + this._hash.update(data) + done() } -Object.defineProperty(Readable.prototype, 'destroyed', { - get: function () { - if (this._readableState === undefined) { - return false; - } - return this._readableState.destroyed; - }, - set: function (value) { - // we ignore the value if the stream - // has not been initialized yet - if (!this._readableState) { - return; - } +Sign.prototype.update = function update (data, enc) { + if (typeof data === 'string') data = new Buffer(data, enc) - // backward compatibility, the user is explicitly - // managing destroyed - this._readableState.destroyed = value; - } -}); + this._hash.update(data) + return this +} -Readable.prototype.destroy = destroyImpl.destroy; -Readable.prototype._undestroy = destroyImpl.undestroy; -Readable.prototype._destroy = function (err, cb) { - this.push(null); - cb(err); -}; +Sign.prototype.sign = function signMethod (key, enc) { + this.end() + var hash = this._hash.digest() + var sig = sign(hash, key, this._hashType, this._signType, this._tag) -// Manually shove something into the read() buffer. -// This returns true if the highWaterMark has not been hit yet, -// similar to how Writable.write() returns true if you should -// write() some more. -Readable.prototype.push = function (chunk, encoding) { - var state = this._readableState; - var skipChunkCheck; + return enc ? sig.toString(enc) : sig +} - if (!state.objectMode) { - if (typeof chunk === 'string') { - encoding = encoding || state.defaultEncoding; - if (encoding !== state.encoding) { - chunk = Buffer.from(chunk, encoding); - encoding = ''; - } - skipChunkCheck = true; - } - } else { - skipChunkCheck = true; - } +function Verify (algorithm) { + stream.Writable.call(this) - return readableAddChunk(this, chunk, encoding, false, skipChunkCheck); -}; + var data = algorithms[algorithm] + if (!data) throw new Error('Unknown message digest') -// Unshift should *always* be something directly out of read() -Readable.prototype.unshift = function (chunk) { - return readableAddChunk(this, chunk, null, true, false); -}; + this._hash = createHash(data.hash) + this._tag = data.id + this._signType = data.sign +} +inherits(Verify, stream.Writable) -function readableAddChunk(stream, chunk, encoding, addToFront, skipChunkCheck) { - var state = stream._readableState; - if (chunk === null) { - state.reading = false; - onEofChunk(stream, state); - } else { - var er; - if (!skipChunkCheck) er = chunkInvalid(state, chunk); - if (er) { - stream.emit('error', er); - } else if (state.objectMode || chunk && chunk.length > 0) { - if (typeof chunk !== 'string' && !state.objectMode && Object.getPrototypeOf(chunk) !== Buffer.prototype) { - chunk = _uint8ArrayToBuffer(chunk); - } +Verify.prototype._write = function _write (data, _, done) { + this._hash.update(data) + done() +} - if (addToFront) { - if (state.endEmitted) stream.emit('error', new Error('stream.unshift() after end event'));else addChunk(stream, state, chunk, true); - } else if (state.ended) { - stream.emit('error', new Error('stream.push() after EOF')); - } else { - state.reading = false; - if (state.decoder && !encoding) { - chunk = state.decoder.write(chunk); - if (state.objectMode || chunk.length !== 0) addChunk(stream, state, chunk, false);else maybeReadMore(stream, state); - } else { - addChunk(stream, state, chunk, false); - } - } - } else if (!addToFront) { - state.reading = false; - } - } +Verify.prototype.update = function update (data, enc) { + if (typeof data === 'string') data = new Buffer(data, enc) - return needMoreData(state); + this._hash.update(data) + return this } -function addChunk(stream, state, chunk, addToFront) { - if (state.flowing && state.length === 0 && !state.sync) { - stream.emit('data', chunk); - stream.read(0); - } else { - // update the buffer info. - state.length += state.objectMode ? 1 : chunk.length; - if (addToFront) state.buffer.unshift(chunk);else state.buffer.push(chunk); +Verify.prototype.verify = function verifyMethod (key, sig, enc) { + if (typeof sig === 'string') sig = new Buffer(sig, enc) - if (state.needReadable) emitReadable(stream); - } - maybeReadMore(stream, state); + this.end() + var hash = this._hash.digest() + return verify(sig, hash, key, this._signType, this._tag) } -function chunkInvalid(state, chunk) { - var er; - if (!_isUint8Array(chunk) && typeof chunk !== 'string' && chunk !== undefined && !state.objectMode) { - er = new TypeError('Invalid non-string/buffer chunk'); - } - return er; +function createSign (algorithm) { + return new Sign(algorithm) } -// if it's past the high water mark, we can push in some more. -// Also, if we have no data yet, we can stand some -// more bytes. This is to work around cases where hwm=0, -// such as the repl. Also, if the push() triggered a -// readable event, and the user called read(largeNumber) such that -// needReadable was set, then we ought to push more, so that another -// 'readable' event will be triggered. -function needMoreData(state) { - return !state.ended && (state.needReadable || state.length < state.highWaterMark || state.length === 0); +function createVerify (algorithm) { + return new Verify(algorithm) } -Readable.prototype.isPaused = function () { - return this._readableState.flowing === false; -}; +module.exports = { + Sign: createSign, + Verify: createVerify, + createSign: createSign, + createVerify: createVerify +} -// backwards compatibility. -Readable.prototype.setEncoding = function (enc) { - if (!StringDecoder) StringDecoder = require('string_decoder/').StringDecoder; - this._readableState.decoder = new StringDecoder(enc); - this._readableState.encoding = enc; - return this; -}; +}).call(this,require("buffer").Buffer) +},{"./algorithms.json":91,"./sign":94,"./verify":95,"buffer":100,"create-hash":104,"inherits":153,"stream":208}],94:[function(require,module,exports){ +(function (Buffer){ +// much of this based on https://github.com/indutny/self-signed/blob/gh-pages/lib/rsa.js +var createHmac = require('create-hmac') +var crt = require('browserify-rsa') +var EC = require('elliptic').ec +var BN = require('bn.js') +var parseKeys = require('parse-asn1') +var curves = require('./curves.json') -// Don't raise the hwm > 8MB -var MAX_HWM = 0x800000; -function computeNewHighWaterMark(n) { - if (n >= MAX_HWM) { - n = MAX_HWM; +function sign (hash, key, hashType, signType, tag) { + var priv = parseKeys(key) + if (priv.curve) { + // rsa keys can be interpreted as ecdsa ones in openssl + if (signType !== 'ecdsa' && signType !== 'ecdsa/rsa') throw new Error('wrong private key type') + return ecSign(hash, priv) + } else if (priv.type === 'dsa') { + if (signType !== 'dsa') throw new Error('wrong private key type') + return dsaSign(hash, priv, hashType) } else { - // Get the next highest power of 2 to prevent increasing hwm excessively in - // tiny amounts - n--; - n |= n >>> 1; - n |= n >>> 2; - n |= n >>> 4; - n |= n >>> 8; - n |= n >>> 16; - n++; + if (signType !== 'rsa' && signType !== 'ecdsa/rsa') throw new Error('wrong private key type') } - return n; -} + hash = Buffer.concat([tag, hash]) + var len = priv.modulus.byteLength() + var pad = [ 0, 1 ] + while (hash.length + pad.length + 1 < len) pad.push(0xff) + pad.push(0x00) + var i = -1 + while (++i < hash.length) pad.push(hash[i]) -// This function is designed to be inlinable, so please take care when making -// changes to the function body. -function howMuchToRead(n, state) { - if (n <= 0 || state.length === 0 && state.ended) return 0; - if (state.objectMode) return 1; - if (n !== n) { - // Only flow one buffer at a time - if (state.flowing && state.length) return state.buffer.head.data.length;else return state.length; - } - // If we're asking for more than the current hwm, then raise the hwm. - if (n > state.highWaterMark) state.highWaterMark = computeNewHighWaterMark(n); - if (n <= state.length) return n; - // Don't have enough - if (!state.ended) { - state.needReadable = true; - return 0; - } - return state.length; + var out = crt(pad, priv) + return out } -// you can override either this method, or the async _read(n) below. -Readable.prototype.read = function (n) { - debug('read', n); - n = parseInt(n, 10); - var state = this._readableState; - var nOrig = n; - - if (n !== 0) state.emittedReadable = false; +function ecSign (hash, priv) { + var curveId = curves[priv.curve.join('.')] + if (!curveId) throw new Error('unknown curve ' + priv.curve.join('.')) - // if we're doing read(0) to trigger a readable event, but we - // already have a bunch of data in the buffer, then just trigger - // the 'readable' event and move on. - if (n === 0 && state.needReadable && (state.length >= state.highWaterMark || state.ended)) { - debug('read: emitReadable', state.length, state.ended); - if (state.length === 0 && state.ended) endReadable(this);else emitReadable(this); - return null; - } + var curve = new EC(curveId) + var key = curve.keyFromPrivate(priv.privateKey) + var out = key.sign(hash) - n = howMuchToRead(n, state); + return new Buffer(out.toDER()) +} - // if we've ended, and we're now clear, then finish it up. - if (n === 0 && state.ended) { - if (state.length === 0) endReadable(this); - return null; +function dsaSign (hash, priv, algo) { + var x = priv.params.priv_key + var p = priv.params.p + var q = priv.params.q + var g = priv.params.g + var r = new BN(0) + var k + var H = bits2int(hash, q).mod(q) + var s = false + var kv = getKey(x, q, hash, algo) + while (s === false) { + k = makeKey(q, kv, algo) + r = makeR(g, k, p, q) + s = k.invm(q).imul(H.add(x.mul(r))).mod(q) + if (s.cmpn(0) === 0) { + s = false + r = new BN(0) + } } + return toDER(r, s) +} - // All the actual chunk generation logic needs to be - // *below* the call to _read. The reason is that in certain - // synthetic stream cases, such as passthrough streams, _read - // may be a completely synchronous operation which may change - // the state of the read buffer, providing enough data when - // before there was *not* enough. - // - // So, the steps are: - // 1. Figure out what the state of things will be after we do - // a read from the buffer. - // - // 2. If that resulting state will trigger a _read, then call _read. - // Note that this may be asynchronous, or synchronous. Yes, it is - // deeply ugly to write APIs this way, but that still doesn't mean - // that the Readable class should behave improperly, as streams are - // designed to be sync/async agnostic. - // Take note if the _read call is sync or async (ie, if the read call - // has returned yet), so that we know whether or not it's safe to emit - // 'readable' etc. - // - // 3. Actually pull the requested chunks out of the buffer and return. +function toDER (r, s) { + r = r.toArray() + s = s.toArray() - // if we need a readable event, then we need to do some reading. - var doRead = state.needReadable; - debug('need readable', doRead); + // Pad values + if (r[0] & 0x80) r = [ 0 ].concat(r) + if (s[0] & 0x80) s = [ 0 ].concat(s) - // if we currently have less than the highWaterMark, then also read some - if (state.length === 0 || state.length - n < state.highWaterMark) { - doRead = true; - debug('length less than watermark', doRead); - } + var total = r.length + s.length + 4 + var res = [ 0x30, total, 0x02, r.length ] + res = res.concat(r, [ 0x02, s.length ], s) + return new Buffer(res) +} - // however, if we've ended, then there's no point, and if we're already - // reading, then it's unnecessary. - if (state.ended || state.reading) { - doRead = false; - debug('reading or ended', doRead); - } else if (doRead) { - debug('do read'); - state.reading = true; - state.sync = true; - // if the length is currently zero, then we *need* a readable event. - if (state.length === 0) state.needReadable = true; - // call internal read method - this._read(state.highWaterMark); - state.sync = false; - // If _read pushed data synchronously, then `reading` will be false, - // and we need to re-evaluate how much data we can return to the user. - if (!state.reading) n = howMuchToRead(nOrig, state); +function getKey (x, q, hash, algo) { + x = new Buffer(x.toArray()) + if (x.length < q.byteLength()) { + var zeros = new Buffer(q.byteLength() - x.length) + zeros.fill(0) + x = Buffer.concat([ zeros, x ]) } + var hlen = hash.length + var hbits = bits2octets(hash, q) + var v = new Buffer(hlen) + v.fill(1) + var k = new Buffer(hlen) + k.fill(0) + k = createHmac(algo, k).update(v).update(new Buffer([ 0 ])).update(x).update(hbits).digest() + v = createHmac(algo, k).update(v).digest() + k = createHmac(algo, k).update(v).update(new Buffer([ 1 ])).update(x).update(hbits).digest() + v = createHmac(algo, k).update(v).digest() + return { k: k, v: v } +} - var ret; - if (n > 0) ret = fromList(n, state);else ret = null; +function bits2int (obits, q) { + var bits = new BN(obits) + var shift = (obits.length << 3) - q.bitLength() + if (shift > 0) bits.ishrn(shift) + return bits +} - if (ret === null) { - state.needReadable = true; - n = 0; - } else { - state.length -= n; +function bits2octets (bits, q) { + bits = bits2int(bits, q) + bits = bits.mod(q) + var out = new Buffer(bits.toArray()) + if (out.length < q.byteLength()) { + var zeros = new Buffer(q.byteLength() - out.length) + zeros.fill(0) + out = Buffer.concat([ zeros, out ]) } + return out +} - if (state.length === 0) { - // If we have nothing in the buffer, then we want to know - // as soon as we *do* get something into the buffer. - if (!state.ended) state.needReadable = true; +function makeKey (q, kv, algo) { + var t + var k - // If we tried to read() past the EOF, then emit end on the next tick. - if (nOrig !== n && state.ended) endReadable(this); - } + do { + t = new Buffer(0) - if (ret !== null) this.emit('data', ret); + while (t.length * 8 < q.bitLength()) { + kv.v = createHmac(algo, kv.k).update(kv.v).digest() + t = Buffer.concat([ t, kv.v ]) + } - return ret; -}; + k = bits2int(t, q) + kv.k = createHmac(algo, kv.k).update(kv.v).update(new Buffer([ 0 ])).digest() + kv.v = createHmac(algo, kv.k).update(kv.v).digest() + } while (k.cmp(q) !== -1) -function onEofChunk(stream, state) { - if (state.ended) return; - if (state.decoder) { - var chunk = state.decoder.end(); - if (chunk && chunk.length) { - state.buffer.push(chunk); - state.length += state.objectMode ? 1 : chunk.length; - } - } - state.ended = true; + return k +} - // emit 'readable' now to make sure it gets picked up. - emitReadable(stream); +function makeR (g, k, p, q) { + return g.toRed(BN.mont(p)).redPow(k).fromRed().mod(q) } -// Don't emit readable right away in sync mode, because this can trigger -// another read() call => stack overflow. This way, it might trigger -// a nextTick recursion warning, but that's not so bad. -function emitReadable(stream) { - var state = stream._readableState; - state.needReadable = false; - if (!state.emittedReadable) { - debug('emitReadable', state.flowing); - state.emittedReadable = true; - if (state.sync) pna.nextTick(emitReadable_, stream);else emitReadable_(stream); +module.exports = sign +module.exports.getKey = getKey +module.exports.makeKey = makeKey + +}).call(this,require("buffer").Buffer) +},{"./curves.json":92,"bn.js":66,"browserify-rsa":89,"buffer":100,"create-hmac":106,"elliptic":119,"parse-asn1":165}],95:[function(require,module,exports){ +(function (Buffer){ +// much of this based on https://github.com/indutny/self-signed/blob/gh-pages/lib/rsa.js +var BN = require('bn.js') +var EC = require('elliptic').ec +var parseKeys = require('parse-asn1') +var curves = require('./curves.json') + +function verify (sig, hash, key, signType, tag) { + var pub = parseKeys(key) + if (pub.type === 'ec') { + // rsa keys can be interpreted as ecdsa ones in openssl + if (signType !== 'ecdsa' && signType !== 'ecdsa/rsa') throw new Error('wrong public key type') + return ecVerify(sig, hash, pub) + } else if (pub.type === 'dsa') { + if (signType !== 'dsa') throw new Error('wrong public key type') + return dsaVerify(sig, hash, pub) + } else { + if (signType !== 'rsa' && signType !== 'ecdsa/rsa') throw new Error('wrong public key type') + } + hash = Buffer.concat([tag, hash]) + var len = pub.modulus.byteLength() + var pad = [ 1 ] + var padNum = 0 + while (hash.length + pad.length + 2 < len) { + pad.push(0xff) + padNum++ } + pad.push(0x00) + var i = -1 + while (++i < hash.length) { + pad.push(hash[i]) + } + pad = new Buffer(pad) + var red = BN.mont(pub.modulus) + sig = new BN(sig).toRed(red) + + sig = sig.redPow(new BN(pub.publicExponent)) + sig = new Buffer(sig.fromRed().toArray()) + var out = padNum < 8 ? 1 : 0 + len = Math.min(sig.length, pad.length) + if (sig.length !== pad.length) out = 1 + + i = -1 + while (++i < len) out |= sig[i] ^ pad[i] + return out === 0 } -function emitReadable_(stream) { - debug('emit readable'); - stream.emit('readable'); - flow(stream); +function ecVerify (sig, hash, pub) { + var curveId = curves[pub.data.algorithm.curve.join('.')] + if (!curveId) throw new Error('unknown curve ' + pub.data.algorithm.curve.join('.')) + + var curve = new EC(curveId) + var pubkey = pub.data.subjectPrivateKey.data + + return curve.verify(hash, sig, pubkey) } -// at this point, the user has presumably seen the 'readable' event, -// and called read() to consume some data. that may have triggered -// in turn another _read(n) call, in which case reading = true if -// it's in progress. -// However, if we're not ended, or reading, and the length < hwm, -// then go ahead and try to read some more preemptively. -function maybeReadMore(stream, state) { - if (!state.readingMore) { - state.readingMore = true; - pna.nextTick(maybeReadMore_, stream, state); - } +function dsaVerify (sig, hash, pub) { + var p = pub.data.p + var q = pub.data.q + var g = pub.data.g + var y = pub.data.pub_key + var unpacked = parseKeys.signature.decode(sig, 'der') + var s = unpacked.s + var r = unpacked.r + checkValue(s, q) + checkValue(r, q) + var montp = BN.mont(p) + var w = s.invm(q) + var v = g.toRed(montp) + .redPow(new BN(hash).mul(w).mod(q)) + .fromRed() + .mul(y.toRed(montp).redPow(r.mul(w).mod(q)).fromRed()) + .mod(p) + .mod(q) + return v.cmp(r) === 0 } -function maybeReadMore_(stream, state) { - var len = state.length; - while (!state.reading && !state.flowing && !state.ended && state.length < state.highWaterMark) { - debug('maybeReadMore read 0'); - stream.read(0); - if (len === state.length) - // didn't get any data, stop spinning. - break;else len = state.length; - } - state.readingMore = false; +function checkValue (b, q) { + if (b.cmpn(0) <= 0) throw new Error('invalid sig') + if (b.cmp(q) >= q) throw new Error('invalid sig') } -// abstract method. to be overridden in specific implementation classes. -// call cb(er, data) where data is <= n in length. -// for virtual (non-string, non-buffer) streams, "length" is somewhat -// arbitrary, and perhaps not very meaningful. -Readable.prototype._read = function (n) { - this.emit('error', new Error('_read() is not implemented')); -}; +module.exports = verify -Readable.prototype.pipe = function (dest, pipeOpts) { - var src = this; - var state = this._readableState; +}).call(this,require("buffer").Buffer) +},{"./curves.json":92,"bn.js":66,"buffer":100,"elliptic":119,"parse-asn1":165}],96:[function(require,module,exports){ +(function (global){ +/*! https://mths.be/punycode v1.4.1 by @mathias */ +;(function(root) { - switch (state.pipesCount) { - case 0: - state.pipes = dest; - break; - case 1: - state.pipes = [state.pipes, dest]; - break; - default: - state.pipes.push(dest); - break; - } - state.pipesCount += 1; - debug('pipe count=%d opts=%j', state.pipesCount, pipeOpts); + /** Detect free variables */ + var freeExports = typeof exports == 'object' && exports && + !exports.nodeType && exports; + var freeModule = typeof module == 'object' && module && + !module.nodeType && module; + var freeGlobal = typeof global == 'object' && global; + if ( + freeGlobal.global === freeGlobal || + freeGlobal.window === freeGlobal || + freeGlobal.self === freeGlobal + ) { + root = freeGlobal; + } - var doEnd = (!pipeOpts || pipeOpts.end !== false) && dest !== process.stdout && dest !== process.stderr; + /** + * The `punycode` object. + * @name punycode + * @type Object + */ + var punycode, - var endFn = doEnd ? onend : unpipe; - if (state.endEmitted) pna.nextTick(endFn);else src.once('end', endFn); + /** Highest positive signed 32-bit float value */ + maxInt = 2147483647, // aka. 0x7FFFFFFF or 2^31-1 - dest.on('unpipe', onunpipe); - function onunpipe(readable, unpipeInfo) { - debug('onunpipe'); - if (readable === src) { - if (unpipeInfo && unpipeInfo.hasUnpiped === false) { - unpipeInfo.hasUnpiped = true; - cleanup(); - } - } - } + /** Bootstring parameters */ + base = 36, + tMin = 1, + tMax = 26, + skew = 38, + damp = 700, + initialBias = 72, + initialN = 128, // 0x80 + delimiter = '-', // '\x2D' - function onend() { - debug('onend'); - dest.end(); - } + /** Regular expressions */ + regexPunycode = /^xn--/, + regexNonASCII = /[^\x20-\x7E]/, // unprintable ASCII chars + non-ASCII chars + regexSeparators = /[\x2E\u3002\uFF0E\uFF61]/g, // RFC 3490 separators - // when the dest drains, it reduces the awaitDrain counter - // on the source. This would be more elegant with a .once() - // handler in flow(), but adding and removing repeatedly is - // too slow. - var ondrain = pipeOnDrain(src); - dest.on('drain', ondrain); + /** Error messages */ + errors = { + 'overflow': 'Overflow: input needs wider integers to process', + 'not-basic': 'Illegal input >= 0x80 (not a basic code point)', + 'invalid-input': 'Invalid input' + }, - var cleanedUp = false; - function cleanup() { - debug('cleanup'); - // cleanup event handlers once the pipe is broken - dest.removeListener('close', onclose); - dest.removeListener('finish', onfinish); - dest.removeListener('drain', ondrain); - dest.removeListener('error', onerror); - dest.removeListener('unpipe', onunpipe); - src.removeListener('end', onend); - src.removeListener('end', unpipe); - src.removeListener('data', ondata); + /** Convenience shortcuts */ + baseMinusTMin = base - tMin, + floor = Math.floor, + stringFromCharCode = String.fromCharCode, - cleanedUp = true; + /** Temporary variable */ + key; - // if the reader is waiting for a drain event from this - // specific writer, then it would cause it to never start - // flowing again. - // So, if this is awaiting a drain, then we just call it now. - // If we don't know, then assume that we are waiting for one. - if (state.awaitDrain && (!dest._writableState || dest._writableState.needDrain)) ondrain(); - } + /*--------------------------------------------------------------------------*/ - // If the user pushes more data while we're writing to dest then we'll end up - // in ondata again. However, we only want to increase awaitDrain once because - // dest will only emit one 'drain' event for the multiple writes. - // => Introduce a guard on increasing awaitDrain. - var increasedAwaitDrain = false; - src.on('data', ondata); - function ondata(chunk) { - debug('ondata'); - increasedAwaitDrain = false; - var ret = dest.write(chunk); - if (false === ret && !increasedAwaitDrain) { - // If the user unpiped during `dest.write()`, it is possible - // to get stuck in a permanently paused state if that write - // also returned false. - // => Check whether `dest` is still a piping destination. - if ((state.pipesCount === 1 && state.pipes === dest || state.pipesCount > 1 && indexOf(state.pipes, dest) !== -1) && !cleanedUp) { - debug('false write response, pause', src._readableState.awaitDrain); - src._readableState.awaitDrain++; - increasedAwaitDrain = true; - } - src.pause(); - } - } - - // if the dest has an error, then stop piping into it. - // however, don't suppress the throwing behavior for this. - function onerror(er) { - debug('onerror', er); - unpipe(); - dest.removeListener('error', onerror); - if (EElistenerCount(dest, 'error') === 0) dest.emit('error', er); - } + /** + * A generic error utility function. + * @private + * @param {String} type The error type. + * @returns {Error} Throws a `RangeError` with the applicable error message. + */ + function error(type) { + throw new RangeError(errors[type]); + } - // Make sure our error handler is attached before userland ones. - prependListener(dest, 'error', onerror); + /** + * A generic `Array#map` utility function. + * @private + * @param {Array} array The array to iterate over. + * @param {Function} callback The function that gets called for every array + * item. + * @returns {Array} A new array of values returned by the callback function. + */ + function map(array, fn) { + var length = array.length; + var result = []; + while (length--) { + result[length] = fn(array[length]); + } + return result; + } - // Both close and finish should trigger unpipe, but only once. - function onclose() { - dest.removeListener('finish', onfinish); - unpipe(); - } - dest.once('close', onclose); - function onfinish() { - debug('onfinish'); - dest.removeListener('close', onclose); - unpipe(); - } - dest.once('finish', onfinish); + /** + * A simple `Array#map`-like wrapper to work with domain name strings or email + * addresses. + * @private + * @param {String} domain The domain name or email address. + * @param {Function} callback The function that gets called for every + * character. + * @returns {Array} A new string of characters returned by the callback + * function. + */ + function mapDomain(string, fn) { + var parts = string.split('@'); + var result = ''; + if (parts.length > 1) { + // In email addresses, only the domain name should be punycoded. Leave + // the local part (i.e. everything up to `@`) intact. + result = parts[0] + '@'; + string = parts[1]; + } + // Avoid `split(regex)` for IE8 compatibility. See #17. + string = string.replace(regexSeparators, '\x2E'); + var labels = string.split('.'); + var encoded = map(labels, fn).join('.'); + return result + encoded; + } - function unpipe() { - debug('unpipe'); - src.unpipe(dest); - } + /** + * Creates an array containing the numeric code points of each Unicode + * character in the string. While JavaScript uses UCS-2 internally, + * this function will convert a pair of surrogate halves (each of which + * UCS-2 exposes as separate characters) into a single code point, + * matching UTF-16. + * @see `punycode.ucs2.encode` + * @see + * @memberOf punycode.ucs2 + * @name decode + * @param {String} string The Unicode input string (UCS-2). + * @returns {Array} The new array of code points. + */ + function ucs2decode(string) { + var output = [], + counter = 0, + length = string.length, + value, + extra; + while (counter < length) { + value = string.charCodeAt(counter++); + if (value >= 0xD800 && value <= 0xDBFF && counter < length) { + // high surrogate, and there is a next character + extra = string.charCodeAt(counter++); + if ((extra & 0xFC00) == 0xDC00) { // low surrogate + output.push(((value & 0x3FF) << 10) + (extra & 0x3FF) + 0x10000); + } else { + // unmatched surrogate; only append this code unit, in case the next + // code unit is the high surrogate of a surrogate pair + output.push(value); + counter--; + } + } else { + output.push(value); + } + } + return output; + } - // tell the dest that it's being piped to - dest.emit('pipe', src); + /** + * Creates a string based on an array of numeric code points. + * @see `punycode.ucs2.decode` + * @memberOf punycode.ucs2 + * @name encode + * @param {Array} codePoints The array of numeric code points. + * @returns {String} The new Unicode string (UCS-2). + */ + function ucs2encode(array) { + return map(array, function(value) { + var output = ''; + if (value > 0xFFFF) { + value -= 0x10000; + output += stringFromCharCode(value >>> 10 & 0x3FF | 0xD800); + value = 0xDC00 | value & 0x3FF; + } + output += stringFromCharCode(value); + return output; + }).join(''); + } - // start the flow if it hasn't been started already. - if (!state.flowing) { - debug('pipe resume'); - src.resume(); - } + /** + * Converts a basic code point into a digit/integer. + * @see `digitToBasic()` + * @private + * @param {Number} codePoint The basic numeric code point value. + * @returns {Number} The numeric value of a basic code point (for use in + * representing integers) in the range `0` to `base - 1`, or `base` if + * the code point does not represent a value. + */ + function basicToDigit(codePoint) { + if (codePoint - 48 < 10) { + return codePoint - 22; + } + if (codePoint - 65 < 26) { + return codePoint - 65; + } + if (codePoint - 97 < 26) { + return codePoint - 97; + } + return base; + } - return dest; -}; + /** + * Converts a digit/integer into a basic code point. + * @see `basicToDigit()` + * @private + * @param {Number} digit The numeric value of a basic code point. + * @returns {Number} The basic code point whose value (when used for + * representing integers) is `digit`, which needs to be in the range + * `0` to `base - 1`. If `flag` is non-zero, the uppercase form is + * used; else, the lowercase form is used. The behavior is undefined + * if `flag` is non-zero and `digit` has no uppercase form. + */ + function digitToBasic(digit, flag) { + // 0..25 map to ASCII a..z or A..Z + // 26..35 map to ASCII 0..9 + return digit + 22 + 75 * (digit < 26) - ((flag != 0) << 5); + } -function pipeOnDrain(src) { - return function () { - var state = src._readableState; - debug('pipeOnDrain', state.awaitDrain); - if (state.awaitDrain) state.awaitDrain--; - if (state.awaitDrain === 0 && EElistenerCount(src, 'data')) { - state.flowing = true; - flow(src); - } - }; -} + /** + * Bias adaptation function as per section 3.4 of RFC 3492. + * https://tools.ietf.org/html/rfc3492#section-3.4 + * @private + */ + function adapt(delta, numPoints, firstTime) { + var k = 0; + delta = firstTime ? floor(delta / damp) : delta >> 1; + delta += floor(delta / numPoints); + for (/* no initialization */; delta > baseMinusTMin * tMax >> 1; k += base) { + delta = floor(delta / baseMinusTMin); + } + return floor(k + (baseMinusTMin + 1) * delta / (delta + skew)); + } -Readable.prototype.unpipe = function (dest) { - var state = this._readableState; - var unpipeInfo = { hasUnpiped: false }; + /** + * Converts a Punycode string of ASCII-only symbols to a string of Unicode + * symbols. + * @memberOf punycode + * @param {String} input The Punycode string of ASCII-only symbols. + * @returns {String} The resulting string of Unicode symbols. + */ + function decode(input) { + // Don't use UCS-2 + var output = [], + inputLength = input.length, + out, + i = 0, + n = initialN, + bias = initialBias, + basic, + j, + index, + oldi, + w, + k, + digit, + t, + /** Cached calculation results */ + baseMinusT; - // if we're not piping anywhere, then do nothing. - if (state.pipesCount === 0) return this; + // Handle the basic code points: let `basic` be the number of input code + // points before the last delimiter, or `0` if there is none, then copy + // the first basic code points to the output. - // just one destination. most common case. - if (state.pipesCount === 1) { - // passed in one, but it's not the right one. - if (dest && dest !== state.pipes) return this; + basic = input.lastIndexOf(delimiter); + if (basic < 0) { + basic = 0; + } - if (!dest) dest = state.pipes; + for (j = 0; j < basic; ++j) { + // if it's not a basic code point + if (input.charCodeAt(j) >= 0x80) { + error('not-basic'); + } + output.push(input.charCodeAt(j)); + } - // got a match. - state.pipes = null; - state.pipesCount = 0; - state.flowing = false; - if (dest) dest.emit('unpipe', this, unpipeInfo); - return this; - } + // Main decoding loop: start just after the last delimiter if any basic code + // points were copied; start at the beginning otherwise. - // slow case. multiple pipe destinations. + for (index = basic > 0 ? basic + 1 : 0; index < inputLength; /* no final expression */) { - if (!dest) { - // remove all. - var dests = state.pipes; - var len = state.pipesCount; - state.pipes = null; - state.pipesCount = 0; - state.flowing = false; + // `index` is the index of the next character to be consumed. + // Decode a generalized variable-length integer into `delta`, + // which gets added to `i`. The overflow checking is easier + // if we increase `i` as we go, then subtract off its starting + // value at the end to obtain `delta`. + for (oldi = i, w = 1, k = base; /* no condition */; k += base) { - for (var i = 0; i < len; i++) { - dests[i].emit('unpipe', this, unpipeInfo); - }return this; - } + if (index >= inputLength) { + error('invalid-input'); + } - // try to find the right one. - var index = indexOf(state.pipes, dest); - if (index === -1) return this; + digit = basicToDigit(input.charCodeAt(index++)); - state.pipes.splice(index, 1); - state.pipesCount -= 1; - if (state.pipesCount === 1) state.pipes = state.pipes[0]; + if (digit >= base || digit > floor((maxInt - i) / w)) { + error('overflow'); + } - dest.emit('unpipe', this, unpipeInfo); + i += digit * w; + t = k <= bias ? tMin : (k >= bias + tMax ? tMax : k - bias); - return this; -}; + if (digit < t) { + break; + } -// set up data events if they are asked for -// Ensure readable listeners eventually get something -Readable.prototype.on = function (ev, fn) { - var res = Stream.prototype.on.call(this, ev, fn); + baseMinusT = base - t; + if (w > floor(maxInt / baseMinusT)) { + error('overflow'); + } - if (ev === 'data') { - // Start flowing on next tick if stream isn't explicitly paused - if (this._readableState.flowing !== false) this.resume(); - } else if (ev === 'readable') { - var state = this._readableState; - if (!state.endEmitted && !state.readableListening) { - state.readableListening = state.needReadable = true; - state.emittedReadable = false; - if (!state.reading) { - pna.nextTick(nReadingNextTick, this); - } else if (state.length) { - emitReadable(this); - } - } - } + w *= baseMinusT; - return res; -}; -Readable.prototype.addListener = Readable.prototype.on; + } -function nReadingNextTick(self) { - debug('readable nexttick read 0'); - self.read(0); -} + out = output.length + 1; + bias = adapt(i - oldi, out, oldi == 0); -// pause() and resume() are remnants of the legacy readable stream API -// If the user uses them, then switch into old mode. -Readable.prototype.resume = function () { - var state = this._readableState; - if (!state.flowing) { - debug('resume'); - state.flowing = true; - resume(this, state); - } - return this; -}; + // `i` was supposed to wrap around from `out` to `0`, + // incrementing `n` each time, so we'll fix that now: + if (floor(i / out) > maxInt - n) { + error('overflow'); + } -function resume(stream, state) { - if (!state.resumeScheduled) { - state.resumeScheduled = true; - pna.nextTick(resume_, stream, state); - } -} + n += floor(i / out); + i %= out; -function resume_(stream, state) { - if (!state.reading) { - debug('resume read 0'); - stream.read(0); - } + // Insert `n` at position `i` of the output + output.splice(i++, 0, n); - state.resumeScheduled = false; - state.awaitDrain = 0; - stream.emit('resume'); - flow(stream); - if (state.flowing && !state.reading) stream.read(0); -} + } -Readable.prototype.pause = function () { - debug('call pause flowing=%j', this._readableState.flowing); - if (false !== this._readableState.flowing) { - debug('pause'); - this._readableState.flowing = false; - this.emit('pause'); - } - return this; -}; + return ucs2encode(output); + } -function flow(stream) { - var state = stream._readableState; - debug('flow', state.flowing); - while (state.flowing && stream.read() !== null) {} -} + /** + * Converts a string of Unicode symbols (e.g. a domain name label) to a + * Punycode string of ASCII-only symbols. + * @memberOf punycode + * @param {String} input The string of Unicode symbols. + * @returns {String} The resulting Punycode string of ASCII-only symbols. + */ + function encode(input) { + var n, + delta, + handledCPCount, + basicLength, + bias, + j, + m, + q, + k, + t, + currentValue, + output = [], + /** `inputLength` will hold the number of code points in `input`. */ + inputLength, + /** Cached calculation results */ + handledCPCountPlusOne, + baseMinusT, + qMinusT; -// wrap an old-style stream as the async data source. -// This is *not* part of the readable stream interface. -// It is an ugly unfortunate mess of history. -Readable.prototype.wrap = function (stream) { - var _this = this; + // Convert the input in UCS-2 to Unicode + input = ucs2decode(input); - var state = this._readableState; - var paused = false; + // Cache the length + inputLength = input.length; - stream.on('end', function () { - debug('wrapped end'); - if (state.decoder && !state.ended) { - var chunk = state.decoder.end(); - if (chunk && chunk.length) _this.push(chunk); - } + // Initialize the state + n = initialN; + delta = 0; + bias = initialBias; - _this.push(null); - }); + // Handle the basic code points + for (j = 0; j < inputLength; ++j) { + currentValue = input[j]; + if (currentValue < 0x80) { + output.push(stringFromCharCode(currentValue)); + } + } - stream.on('data', function (chunk) { - debug('wrapped data'); - if (state.decoder) chunk = state.decoder.write(chunk); + handledCPCount = basicLength = output.length; - // don't skip over falsy values in objectMode - if (state.objectMode && (chunk === null || chunk === undefined)) return;else if (!state.objectMode && (!chunk || !chunk.length)) return; + // `handledCPCount` is the number of code points that have been handled; + // `basicLength` is the number of basic code points. - var ret = _this.push(chunk); - if (!ret) { - paused = true; - stream.pause(); - } - }); + // Finish the basic string - if it is not empty - with a delimiter + if (basicLength) { + output.push(delimiter); + } - // proxy all the other methods. - // important when wrapping filters and duplexes. - for (var i in stream) { - if (this[i] === undefined && typeof stream[i] === 'function') { - this[i] = function (method) { - return function () { - return stream[method].apply(stream, arguments); - }; - }(i); - } - } + // Main encoding loop: + while (handledCPCount < inputLength) { - // proxy certain important events. - for (var n = 0; n < kProxyEvents.length; n++) { - stream.on(kProxyEvents[n], this.emit.bind(this, kProxyEvents[n])); - } + // All non-basic code points < n have been handled already. Find the next + // larger one: + for (m = maxInt, j = 0; j < inputLength; ++j) { + currentValue = input[j]; + if (currentValue >= n && currentValue < m) { + m = currentValue; + } + } - // when we try to consume some more bytes, simply unpause the - // underlying stream. - this._read = function (n) { - debug('wrapped _read', n); - if (paused) { - paused = false; - stream.resume(); - } - }; + // Increase `delta` enough to advance the decoder's state to , + // but guard against overflow + handledCPCountPlusOne = handledCPCount + 1; + if (m - n > floor((maxInt - delta) / handledCPCountPlusOne)) { + error('overflow'); + } - return this; -}; - -Object.defineProperty(Readable.prototype, 'readableHighWaterMark', { - // making it explicit this property is not enumerable - // because otherwise some prototype manipulation in - // userland will fail - enumerable: false, - get: function () { - return this._readableState.highWaterMark; - } -}); - -// exposed for testing purposes only. -Readable._fromList = fromList; - -// Pluck off n bytes from an array of buffers. -// Length is the combined lengths of all the buffers in the list. -// This function is designed to be inlinable, so please take care when making -// changes to the function body. -function fromList(n, state) { - // nothing buffered - if (state.length === 0) return null; + delta += (m - n) * handledCPCountPlusOne; + n = m; - var ret; - if (state.objectMode) ret = state.buffer.shift();else if (!n || n >= state.length) { - // read it all, truncate the list - if (state.decoder) ret = state.buffer.join('');else if (state.buffer.length === 1) ret = state.buffer.head.data;else ret = state.buffer.concat(state.length); - state.buffer.clear(); - } else { - // read part of list - ret = fromListPartial(n, state.buffer, state.decoder); - } + for (j = 0; j < inputLength; ++j) { + currentValue = input[j]; - return ret; -} + if (currentValue < n && ++delta > maxInt) { + error('overflow'); + } -// Extracts only enough buffered data to satisfy the amount requested. -// This function is designed to be inlinable, so please take care when making -// changes to the function body. -function fromListPartial(n, list, hasStrings) { - var ret; - if (n < list.head.data.length) { - // slice is the same for buffers and strings - ret = list.head.data.slice(0, n); - list.head.data = list.head.data.slice(n); - } else if (n === list.head.data.length) { - // first chunk is a perfect match - ret = list.shift(); - } else { - // result spans more than one buffer - ret = hasStrings ? copyFromBufferString(n, list) : copyFromBuffer(n, list); - } - return ret; -} + if (currentValue == n) { + // Represent delta as a generalized variable-length integer + for (q = delta, k = base; /* no condition */; k += base) { + t = k <= bias ? tMin : (k >= bias + tMax ? tMax : k - bias); + if (q < t) { + break; + } + qMinusT = q - t; + baseMinusT = base - t; + output.push( + stringFromCharCode(digitToBasic(t + qMinusT % baseMinusT, 0)) + ); + q = floor(qMinusT / baseMinusT); + } -// Copies a specified amount of characters from the list of buffered data -// chunks. -// This function is designed to be inlinable, so please take care when making -// changes to the function body. -function copyFromBufferString(n, list) { - var p = list.head; - var c = 1; - var ret = p.data; - n -= ret.length; - while (p = p.next) { - var str = p.data; - var nb = n > str.length ? str.length : n; - if (nb === str.length) ret += str;else ret += str.slice(0, n); - n -= nb; - if (n === 0) { - if (nb === str.length) { - ++c; - if (p.next) list.head = p.next;else list.head = list.tail = null; - } else { - list.head = p; - p.data = str.slice(nb); - } - break; - } - ++c; - } - list.length -= c; - return ret; -} + output.push(stringFromCharCode(digitToBasic(q, 0))); + bias = adapt(delta, handledCPCountPlusOne, handledCPCount == basicLength); + delta = 0; + ++handledCPCount; + } + } -// Copies a specified amount of bytes from the list of buffered data chunks. -// This function is designed to be inlinable, so please take care when making -// changes to the function body. -function copyFromBuffer(n, list) { - var ret = Buffer.allocUnsafe(n); - var p = list.head; - var c = 1; - p.data.copy(ret); - n -= p.data.length; - while (p = p.next) { - var buf = p.data; - var nb = n > buf.length ? buf.length : n; - buf.copy(ret, ret.length - n, 0, nb); - n -= nb; - if (n === 0) { - if (nb === buf.length) { - ++c; - if (p.next) list.head = p.next;else list.head = list.tail = null; - } else { - list.head = p; - p.data = buf.slice(nb); - } - break; - } - ++c; - } - list.length -= c; - return ret; -} + ++delta; + ++n; -function endReadable(stream) { - var state = stream._readableState; + } + return output.join(''); + } - // If we get here before consuming all the bytes, then that is a - // bug in node. Should never happen. - if (state.length > 0) throw new Error('"endReadable()" called on non-empty stream'); + /** + * Converts a Punycode string representing a domain name or an email address + * to Unicode. Only the Punycoded parts of the input will be converted, i.e. + * it doesn't matter if you call it on a string that has already been + * converted to Unicode. + * @memberOf punycode + * @param {String} input The Punycoded domain name or email address to + * convert to Unicode. + * @returns {String} The Unicode representation of the given Punycode + * string. + */ + function toUnicode(input) { + return mapDomain(input, function(string) { + return regexPunycode.test(string) + ? decode(string.slice(4).toLowerCase()) + : string; + }); + } - if (!state.endEmitted) { - state.ended = true; - pna.nextTick(endReadableNT, state, stream); - } -} + /** + * Converts a Unicode string representing a domain name or an email address to + * Punycode. Only the non-ASCII parts of the domain name will be converted, + * i.e. it doesn't matter if you call it with a domain that's already in + * ASCII. + * @memberOf punycode + * @param {String} input The domain name or email address to convert, as a + * Unicode string. + * @returns {String} The Punycode representation of the given domain name or + * email address. + */ + function toASCII(input) { + return mapDomain(input, function(string) { + return regexNonASCII.test(string) + ? 'xn--' + encode(string) + : string; + }); + } -function endReadableNT(state, stream) { - // Check that we didn't get one last unshift. - if (!state.endEmitted && state.length === 0) { - state.endEmitted = true; - stream.readable = false; - stream.emit('end'); - } -} + /*--------------------------------------------------------------------------*/ -function indexOf(xs, x) { - for (var i = 0, l = xs.length; i < l; i++) { - if (xs[i] === x) return i; - } - return -1; -} -}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {}) -},{"./_stream_duplex":135,"./internal/streams/BufferList":140,"./internal/streams/destroy":141,"./internal/streams/stream":142,"_process":122,"core-util-is":54,"events":87,"inherits":104,"isarray":106,"process-nextick-args":121,"safe-buffer":148,"string_decoder/":158,"util":22}],138:[function(require,module,exports){ -// Copyright Joyent, Inc. and other Node contributors. -// -// Permission is hereby granted, free of charge, to any person obtaining a -// copy of this software and associated documentation files (the -// "Software"), to deal in the Software without restriction, including -// without limitation the rights to use, copy, modify, merge, publish, -// distribute, sublicense, and/or sell copies of the Software, and to permit -// persons to whom the Software is furnished to do so, subject to the -// following conditions: -// -// The above copyright notice and this permission notice shall be included -// in all copies or substantial portions of the Software. -// -// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS -// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF -// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN -// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, -// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR -// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE -// USE OR OTHER DEALINGS IN THE SOFTWARE. + /** Define the public API */ + punycode = { + /** + * A string representing the current Punycode.js version number. + * @memberOf punycode + * @type String + */ + 'version': '1.4.1', + /** + * An object of methods to convert from JavaScript's internal character + * representation (UCS-2) to Unicode code points, and back. + * @see + * @memberOf punycode + * @type Object + */ + 'ucs2': { + 'decode': ucs2decode, + 'encode': ucs2encode + }, + 'decode': decode, + 'encode': encode, + 'toASCII': toASCII, + 'toUnicode': toUnicode + }; -// a transform stream is a readable/writable stream where you do -// something with the data. Sometimes it's called a "filter", -// but that's not a great name for it, since that implies a thing where -// some bits pass through, and others are simply ignored. (That would -// be a valid example of a transform, of course.) -// -// While the output is causally related to the input, it's not a -// necessarily symmetric or synchronous transformation. For example, -// a zlib stream might take multiple plain-text writes(), and then -// emit a single compressed chunk some time in the future. -// -// Here's how this works: -// -// The Transform stream has all the aspects of the readable and writable -// stream classes. When you write(chunk), that calls _write(chunk,cb) -// internally, and returns false if there's a lot of pending writes -// buffered up. When you call read(), that calls _read(n) until -// there's enough pending readable data buffered up. -// -// In a transform stream, the written data is placed in a buffer. When -// _read(n) is called, it transforms the queued up data, calling the -// buffered _write cb's as it consumes chunks. If consuming a single -// written chunk would result in multiple output chunks, then the first -// outputted bit calls the readcb, and subsequent chunks just go into -// the read buffer, and will cause it to emit 'readable' if necessary. -// -// This way, back-pressure is actually determined by the reading side, -// since _read has to be called to start processing a new chunk. However, -// a pathological inflate type of transform can cause excessive buffering -// here. For example, imagine a stream where every byte of input is -// interpreted as an integer from 0-255, and then results in that many -// bytes of output. Writing the 4 bytes {ff,ff,ff,ff} would result in -// 1kb of data being output. In this case, you could write a very small -// amount of input, and end up with a very large amount of output. In -// such a pathological inflating mechanism, there'd be no way to tell -// the system to stop doing the transform. A single 4MB write could -// cause the system to run out of memory. -// -// However, even in such a pathological case, only a single written chunk -// would be consumed, and then the rest would wait (un-transformed) until -// the results of the previous transformed chunk were consumed. + /** Expose `punycode` */ + // Some AMD build optimizers, like r.js, check for specific condition patterns + // like the following: + if ( + typeof define == 'function' && + typeof define.amd == 'object' && + define.amd + ) { + define('punycode', function() { + return punycode; + }); + } else if (freeExports && freeModule) { + if (module.exports == freeExports) { + // in Node.js, io.js, or RingoJS v0.8.0+ + freeModule.exports = punycode; + } else { + // in Narwhal or RingoJS v0.7.0- + for (key in punycode) { + punycode.hasOwnProperty(key) && (freeExports[key] = punycode[key]); + } + } + } else { + // in Rhino or a web browser + root.punycode = punycode; + } -'use strict'; +}(this)); -module.exports = Transform; +}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {}) +},{}],97:[function(require,module,exports){ +var basex = require('base-x') +var ALPHABET = '123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz' -var Duplex = require('./_stream_duplex'); +module.exports = basex(ALPHABET) -/**/ -var util = require('core-util-is'); -util.inherits = require('inherits'); -/**/ +},{"base-x":64}],98:[function(require,module,exports){ +module.exports = function(a, b) { + if (typeof a.compare === 'function') return a.compare(b) + if (a === b) return 0 -util.inherits(Transform, Duplex); + var x = a.length + var y = b.length -function afterTransform(er, data) { - var ts = this._transformState; - ts.transforming = false; + var i = 0 + var len = Math.min(x, y) + while (i < len) { + if (a[i] !== b[i]) break - var cb = ts.writecb; + ++i + } - if (!cb) { - return this.emit('error', new Error('write callback called multiple times')); + if (i !== len) { + x = a[i] + y = b[i] } - ts.writechunk = null; - ts.writecb = null; + if (x < y) return -1 + if (y < x) return 1 + return 0 +} - if (data != null) // single equals check for both `null` and `undefined` - this.push(data); - cb(er); +},{}],99:[function(require,module,exports){ +(function (Buffer){ +module.exports = function xor (a, b) { + var length = Math.min(a.length, b.length) + var buffer = new Buffer(length) - var rs = this._readableState; - rs.reading = false; - if (rs.needReadable || rs.length < rs.highWaterMark) { - this._read(rs.highWaterMark); + for (var i = 0; i < length; ++i) { + buffer[i] = a[i] ^ b[i] } -} -function Transform(options) { - if (!(this instanceof Transform)) return new Transform(options); + return buffer +} - Duplex.call(this, options); +}).call(this,require("buffer").Buffer) +},{"buffer":100}],100:[function(require,module,exports){ +(function (Buffer){ +/*! + * The buffer module from node.js, for the browser. + * + * @author Feross Aboukhadijeh + * @license MIT + */ +/* eslint-disable no-proto */ - this._transformState = { - afterTransform: afterTransform.bind(this), - needTransform: false, - transforming: false, - writecb: null, - writechunk: null, - writeencoding: null - }; +'use strict' - // start out asking for a readable event once data is transformed. - this._readableState.needReadable = true; +var base64 = require('base64-js') +var ieee754 = require('ieee754') - // we have implemented the _read method, and done the other things - // that Readable wants before the first _read call, so unset the - // sync guard flag. - this._readableState.sync = false; +exports.Buffer = Buffer +exports.SlowBuffer = SlowBuffer +exports.INSPECT_MAX_BYTES = 50 - if (options) { - if (typeof options.transform === 'function') this._transform = options.transform; +var K_MAX_LENGTH = 0x7fffffff +exports.kMaxLength = K_MAX_LENGTH - if (typeof options.flush === 'function') this._flush = options.flush; - } +/** + * If `Buffer.TYPED_ARRAY_SUPPORT`: + * === true Use Uint8Array implementation (fastest) + * === false Print warning and recommend using `buffer` v4.x which has an Object + * implementation (most compatible, even IE6) + * + * Browsers that support typed arrays are IE 10+, Firefox 4+, Chrome 7+, Safari 5.1+, + * Opera 11.6+, iOS 4.2+. + * + * We report that the browser does not support typed arrays if the are not subclassable + * using __proto__. Firefox 4-29 lacks support for adding new properties to `Uint8Array` + * (See: https://bugzilla.mozilla.org/show_bug.cgi?id=695438). IE 10 lacks support + * for __proto__ and has a buggy typed array implementation. + */ +Buffer.TYPED_ARRAY_SUPPORT = typedArraySupport() - // When the writable side finishes, then flush out anything remaining. - this.on('prefinish', prefinish); +if (!Buffer.TYPED_ARRAY_SUPPORT && typeof console !== 'undefined' && + typeof console.error === 'function') { + console.error( + 'This browser lacks typed array (Uint8Array) support which is required by ' + + '`buffer` v5.x. Use `buffer` v4.x if you require old browser support.' + ) } -function prefinish() { - var _this = this; - - if (typeof this._flush === 'function') { - this._flush(function (er, data) { - done(_this, er, data); - }); - } else { - done(this, null, null); +function typedArraySupport () { + // Can typed array instances can be augmented? + try { + var arr = new Uint8Array(1) + arr.__proto__ = { __proto__: Uint8Array.prototype, foo: function () { return 42 } } + return arr.foo() === 42 + } catch (e) { + return false } } -Transform.prototype.push = function (chunk, encoding) { - this._transformState.needTransform = false; - return Duplex.prototype.push.call(this, chunk, encoding); -}; - -// This is the part where you do stuff! -// override this function in implementation classes. -// 'chunk' is an input chunk. -// -// Call `push(newChunk)` to pass along transformed output -// to the readable side. You may call 'push' zero or more times. -// -// Call `cb(err)` when you are done with this chunk. If you pass -// an error, then that'll put the hurt on the whole operation. If you -// never call cb(), then you'll never get another chunk. -Transform.prototype._transform = function (chunk, encoding, cb) { - throw new Error('_transform() is not implemented'); -}; - -Transform.prototype._write = function (chunk, encoding, cb) { - var ts = this._transformState; - ts.writecb = cb; - ts.writechunk = chunk; - ts.writeencoding = encoding; - if (!ts.transforming) { - var rs = this._readableState; - if (ts.needTransform || rs.needReadable || rs.length < rs.highWaterMark) this._read(rs.highWaterMark); +Object.defineProperty(Buffer.prototype, 'parent', { + enumerable: true, + get: function () { + if (!Buffer.isBuffer(this)) return undefined + return this.buffer } -}; - -// Doesn't matter what the args are here. -// _transform does all the work. -// That we got here means that the readable side wants more data. -Transform.prototype._read = function (n) { - var ts = this._transformState; +}) - if (ts.writechunk !== null && ts.writecb && !ts.transforming) { - ts.transforming = true; - this._transform(ts.writechunk, ts.writeencoding, ts.afterTransform); - } else { - // mark that we need a transform, so that any data that comes in - // will get processed, now that we've asked for it. - ts.needTransform = true; +Object.defineProperty(Buffer.prototype, 'offset', { + enumerable: true, + get: function () { + if (!Buffer.isBuffer(this)) return undefined + return this.byteOffset } -}; +}) -Transform.prototype._destroy = function (err, cb) { - var _this2 = this; +function createBuffer (length) { + if (length > K_MAX_LENGTH) { + throw new RangeError('The value "' + length + '" is invalid for option "size"') + } + // Return an augmented `Uint8Array` instance + var buf = new Uint8Array(length) + buf.__proto__ = Buffer.prototype + return buf +} - Duplex.prototype._destroy.call(this, err, function (err2) { - cb(err2); - _this2.emit('close'); - }); -}; - -function done(stream, er, data) { - if (er) return stream.emit('error', er); - - if (data != null) // single equals check for both `null` and `undefined` - stream.push(data); - - // if there's nothing in the write buffer, then that means - // that nothing more will ever be provided - if (stream._writableState.length) throw new Error('Calling transform done when ws.length != 0'); - - if (stream._transformState.transforming) throw new Error('Calling transform done when still transforming'); +/** + * The Buffer constructor returns instances of `Uint8Array` that have their + * prototype changed to `Buffer.prototype`. Furthermore, `Buffer` is a subclass of + * `Uint8Array`, so the returned instances will have all the node `Buffer` methods + * and the `Uint8Array` methods. Square bracket notation works as expected -- it + * returns a single octet. + * + * The `Uint8Array` prototype remains unmodified. + */ - return stream.push(null); +function Buffer (arg, encodingOrOffset, length) { + // Common case. + if (typeof arg === 'number') { + if (typeof encodingOrOffset === 'string') { + throw new TypeError( + 'The "string" argument must be of type string. Received type number' + ) + } + return allocUnsafe(arg) + } + return from(arg, encodingOrOffset, length) } -},{"./_stream_duplex":135,"core-util-is":54,"inherits":104}],139:[function(require,module,exports){ -(function (process,global,setImmediate){ -// Copyright Joyent, Inc. and other Node contributors. -// -// Permission is hereby granted, free of charge, to any person obtaining a -// copy of this software and associated documentation files (the -// "Software"), to deal in the Software without restriction, including -// without limitation the rights to use, copy, modify, merge, publish, -// distribute, sublicense, and/or sell copies of the Software, and to permit -// persons to whom the Software is furnished to do so, subject to the -// following conditions: -// -// The above copyright notice and this permission notice shall be included -// in all copies or substantial portions of the Software. -// -// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS -// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF -// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN -// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, -// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR -// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE -// USE OR OTHER DEALINGS IN THE SOFTWARE. - -// A bit simpler than readable streams. -// Implement an async ._write(chunk, encoding, cb), and it'll handle all -// the drain event emission and buffering. - -'use strict'; - -/**/ - -var pna = require('process-nextick-args'); -/**/ - -module.exports = Writable; -/* */ -function WriteReq(chunk, encoding, cb) { - this.chunk = chunk; - this.encoding = encoding; - this.callback = cb; - this.next = null; +// Fix subarray() in ES2016. See: https://github.com/feross/buffer/pull/97 +if (typeof Symbol !== 'undefined' && Symbol.species != null && + Buffer[Symbol.species] === Buffer) { + Object.defineProperty(Buffer, Symbol.species, { + value: null, + configurable: true, + enumerable: false, + writable: false + }) } -// It seems a linked list but it is not -// there will be only 2 of these for each stream -function CorkedRequest(state) { - var _this = this; +Buffer.poolSize = 8192 // not used by this implementation - this.next = null; - this.entry = null; - this.finish = function () { - onCorkedFinish(_this, state); - }; -} -/* */ +function from (value, encodingOrOffset, length) { + if (typeof value === 'string') { + return fromString(value, encodingOrOffset) + } -/**/ -var asyncWrite = !process.browser && ['v0.10', 'v0.9.'].indexOf(process.version.slice(0, 5)) > -1 ? setImmediate : pna.nextTick; -/**/ + if (ArrayBuffer.isView(value)) { + return fromArrayLike(value) + } -/**/ -var Duplex; -/**/ + if (value == null) { + throw TypeError( + 'The first argument must be one of type string, Buffer, ArrayBuffer, Array, ' + + 'or Array-like Object. Received type ' + (typeof value) + ) + } -Writable.WritableState = WritableState; + if (isInstance(value, ArrayBuffer) || + (value && isInstance(value.buffer, ArrayBuffer))) { + return fromArrayBuffer(value, encodingOrOffset, length) + } -/**/ -var util = require('core-util-is'); -util.inherits = require('inherits'); -/**/ + if (typeof value === 'number') { + throw new TypeError( + 'The "value" argument must not be of type number. Received type number' + ) + } -/**/ -var internalUtil = { - deprecate: require('util-deprecate') -}; -/**/ + var valueOf = value.valueOf && value.valueOf() + if (valueOf != null && valueOf !== value) { + return Buffer.from(valueOf, encodingOrOffset, length) + } -/**/ -var Stream = require('./internal/streams/stream'); -/**/ + var b = fromObject(value) + if (b) return b -/**/ + if (typeof Symbol !== 'undefined' && Symbol.toPrimitive != null && + typeof value[Symbol.toPrimitive] === 'function') { + return Buffer.from( + value[Symbol.toPrimitive]('string'), encodingOrOffset, length + ) + } -var Buffer = require('safe-buffer').Buffer; -var OurUint8Array = global.Uint8Array || function () {}; -function _uint8ArrayToBuffer(chunk) { - return Buffer.from(chunk); + throw new TypeError( + 'The first argument must be one of type string, Buffer, ArrayBuffer, Array, ' + + 'or Array-like Object. Received type ' + (typeof value) + ) } -function _isUint8Array(obj) { - return Buffer.isBuffer(obj) || obj instanceof OurUint8Array; + +/** + * Functionally equivalent to Buffer(arg, encoding) but throws a TypeError + * if value is a number. + * Buffer.from(str[, encoding]) + * Buffer.from(array) + * Buffer.from(buffer) + * Buffer.from(arrayBuffer[, byteOffset[, length]]) + **/ +Buffer.from = function (value, encodingOrOffset, length) { + return from(value, encodingOrOffset, length) } -/**/ +// Note: Change prototype *after* Buffer.from is defined to workaround Chrome bug: +// https://github.com/feross/buffer/pull/148 +Buffer.prototype.__proto__ = Uint8Array.prototype +Buffer.__proto__ = Uint8Array -var destroyImpl = require('./internal/streams/destroy'); +function assertSize (size) { + if (typeof size !== 'number') { + throw new TypeError('"size" argument must be of type number') + } else if (size < 0) { + throw new RangeError('The value "' + size + '" is invalid for option "size"') + } +} -util.inherits(Writable, Stream); +function alloc (size, fill, encoding) { + assertSize(size) + if (size <= 0) { + return createBuffer(size) + } + if (fill !== undefined) { + // Only pay attention to encoding if it's a string. This + // prevents accidentally sending in a number that would + // be interpretted as a start offset. + return typeof encoding === 'string' + ? createBuffer(size).fill(fill, encoding) + : createBuffer(size).fill(fill) + } + return createBuffer(size) +} -function nop() {} +/** + * Creates a new filled Buffer instance. + * alloc(size[, fill[, encoding]]) + **/ +Buffer.alloc = function (size, fill, encoding) { + return alloc(size, fill, encoding) +} -function WritableState(options, stream) { - Duplex = Duplex || require('./_stream_duplex'); +function allocUnsafe (size) { + assertSize(size) + return createBuffer(size < 0 ? 0 : checked(size) | 0) +} - options = options || {}; +/** + * Equivalent to Buffer(num), by default creates a non-zero-filled Buffer instance. + * */ +Buffer.allocUnsafe = function (size) { + return allocUnsafe(size) +} +/** + * Equivalent to SlowBuffer(num), by default creates a non-zero-filled Buffer instance. + */ +Buffer.allocUnsafeSlow = function (size) { + return allocUnsafe(size) +} - // Duplex streams are both readable and writable, but share - // the same options object. - // However, some cases require setting options to different - // values for the readable and the writable sides of the duplex stream. - // These options can be provided separately as readableXXX and writableXXX. - var isDuplex = stream instanceof Duplex; +function fromString (string, encoding) { + if (typeof encoding !== 'string' || encoding === '') { + encoding = 'utf8' + } - // object stream flag to indicate whether or not this stream - // contains buffers or objects. - this.objectMode = !!options.objectMode; + if (!Buffer.isEncoding(encoding)) { + throw new TypeError('Unknown encoding: ' + encoding) + } - if (isDuplex) this.objectMode = this.objectMode || !!options.writableObjectMode; + var length = byteLength(string, encoding) | 0 + var buf = createBuffer(length) - // the point at which write() starts returning false - // Note: 0 is a valid value, means that we always return false if - // the entire buffer is not flushed immediately on write() - var hwm = options.highWaterMark; - var writableHwm = options.writableHighWaterMark; - var defaultHwm = this.objectMode ? 16 : 16 * 1024; + var actual = buf.write(string, encoding) - if (hwm || hwm === 0) this.highWaterMark = hwm;else if (isDuplex && (writableHwm || writableHwm === 0)) this.highWaterMark = writableHwm;else this.highWaterMark = defaultHwm; + if (actual !== length) { + // Writing a hex string, for example, that contains invalid characters will + // cause everything after the first invalid character to be ignored. (e.g. + // 'abxxcd' will be treated as 'ab') + buf = buf.slice(0, actual) + } - // cast to ints. - this.highWaterMark = Math.floor(this.highWaterMark); + return buf +} - // if _final has been called - this.finalCalled = false; +function fromArrayLike (array) { + var length = array.length < 0 ? 0 : checked(array.length) | 0 + var buf = createBuffer(length) + for (var i = 0; i < length; i += 1) { + buf[i] = array[i] & 255 + } + return buf +} - // drain event flag. - this.needDrain = false; - // at the start of calling end() - this.ending = false; - // when end() has been called, and returned - this.ended = false; - // when 'finish' is emitted - this.finished = false; +function fromArrayBuffer (array, byteOffset, length) { + if (byteOffset < 0 || array.byteLength < byteOffset) { + throw new RangeError('"offset" is outside of buffer bounds') + } - // has it been destroyed - this.destroyed = false; + if (array.byteLength < byteOffset + (length || 0)) { + throw new RangeError('"length" is outside of buffer bounds') + } - // should we decode strings into buffers before passing to _write? - // this is here so that some node-core streams can optimize string - // handling at a lower level. - var noDecode = options.decodeStrings === false; - this.decodeStrings = !noDecode; + var buf + if (byteOffset === undefined && length === undefined) { + buf = new Uint8Array(array) + } else if (length === undefined) { + buf = new Uint8Array(array, byteOffset) + } else { + buf = new Uint8Array(array, byteOffset, length) + } - // Crypto is kind of old and crusty. Historically, its default string - // encoding is 'binary' so we have to make this configurable. - // Everything else in the universe uses 'utf8', though. - this.defaultEncoding = options.defaultEncoding || 'utf8'; + // Return an augmented `Uint8Array` instance + buf.__proto__ = Buffer.prototype + return buf +} - // not an actual buffer we keep track of, but a measurement - // of how much we're waiting to get pushed to some underlying - // socket or file. - this.length = 0; +function fromObject (obj) { + if (Buffer.isBuffer(obj)) { + var len = checked(obj.length) | 0 + var buf = createBuffer(len) - // a flag to see when we're in the middle of a write. - this.writing = false; + if (buf.length === 0) { + return buf + } - // when true all writes will be buffered until .uncork() call - this.corked = 0; + obj.copy(buf, 0, 0, len) + return buf + } - // a flag to be able to tell if the onwrite cb is called immediately, - // or on a later tick. We set this to true at first, because any - // actions that shouldn't happen until "later" should generally also - // not happen before the first write call. - this.sync = true; + if (obj.length !== undefined) { + if (typeof obj.length !== 'number' || numberIsNaN(obj.length)) { + return createBuffer(0) + } + return fromArrayLike(obj) + } - // a flag to know if we're processing previously buffered items, which - // may call the _write() callback in the same tick, so that we don't - // end up in an overlapped onwrite situation. - this.bufferProcessing = false; + if (obj.type === 'Buffer' && Array.isArray(obj.data)) { + return fromArrayLike(obj.data) + } +} - // the callback that's passed to _write(chunk,cb) - this.onwrite = function (er) { - onwrite(stream, er); - }; +function checked (length) { + // Note: cannot use `length < K_MAX_LENGTH` here because that fails when + // length is NaN (which is otherwise coerced to zero.) + if (length >= K_MAX_LENGTH) { + throw new RangeError('Attempt to allocate Buffer larger than maximum ' + + 'size: 0x' + K_MAX_LENGTH.toString(16) + ' bytes') + } + return length | 0 +} - // the callback that the user supplies to write(chunk,encoding,cb) - this.writecb = null; +function SlowBuffer (length) { + if (+length != length) { // eslint-disable-line eqeqeq + length = 0 + } + return Buffer.alloc(+length) +} - // the amount that is being written when _write is called. - this.writelen = 0; +Buffer.isBuffer = function isBuffer (b) { + return b != null && b._isBuffer === true && + b !== Buffer.prototype // so Buffer.isBuffer(Buffer.prototype) will be false +} - this.bufferedRequest = null; - this.lastBufferedRequest = null; +Buffer.compare = function compare (a, b) { + if (isInstance(a, Uint8Array)) a = Buffer.from(a, a.offset, a.byteLength) + if (isInstance(b, Uint8Array)) b = Buffer.from(b, b.offset, b.byteLength) + if (!Buffer.isBuffer(a) || !Buffer.isBuffer(b)) { + throw new TypeError( + 'The "buf1", "buf2" arguments must be one of type Buffer or Uint8Array' + ) + } - // number of pending user-supplied write callbacks - // this must be 0 before 'finish' can be emitted - this.pendingcb = 0; + if (a === b) return 0 - // emit prefinish if the only thing we're waiting for is _write cbs - // This is relevant for synchronous Transform streams - this.prefinished = false; + var x = a.length + var y = b.length - // True if the error was already emitted and should not be thrown again - this.errorEmitted = false; + for (var i = 0, len = Math.min(x, y); i < len; ++i) { + if (a[i] !== b[i]) { + x = a[i] + y = b[i] + break + } + } - // count buffered requests - this.bufferedRequestCount = 0; + if (x < y) return -1 + if (y < x) return 1 + return 0 +} - // allocate the first CorkedRequest, there is always - // one allocated and free to use, and we maintain at most two - this.corkedRequestsFree = new CorkedRequest(this); +Buffer.isEncoding = function isEncoding (encoding) { + switch (String(encoding).toLowerCase()) { + case 'hex': + case 'utf8': + case 'utf-8': + case 'ascii': + case 'latin1': + case 'binary': + case 'base64': + case 'ucs2': + case 'ucs-2': + case 'utf16le': + case 'utf-16le': + return true + default: + return false + } } -WritableState.prototype.getBuffer = function getBuffer() { - var current = this.bufferedRequest; - var out = []; - while (current) { - out.push(current); - current = current.next; +Buffer.concat = function concat (list, length) { + if (!Array.isArray(list)) { + throw new TypeError('"list" argument must be an Array of Buffers') } - return out; -}; -(function () { - try { - Object.defineProperty(WritableState.prototype, 'buffer', { - get: internalUtil.deprecate(function () { - return this.getBuffer(); - }, '_writableState.buffer is deprecated. Use _writableState.getBuffer ' + 'instead.', 'DEP0003') - }); - } catch (_) {} -})(); + if (list.length === 0) { + return Buffer.alloc(0) + } -// Test _writableState for inheritance to account for Duplex streams, -// whose prototype chain only points to Readable. -var realHasInstance; -if (typeof Symbol === 'function' && Symbol.hasInstance && typeof Function.prototype[Symbol.hasInstance] === 'function') { - realHasInstance = Function.prototype[Symbol.hasInstance]; - Object.defineProperty(Writable, Symbol.hasInstance, { - value: function (object) { - if (realHasInstance.call(this, object)) return true; - if (this !== Writable) return false; + var i + if (length === undefined) { + length = 0 + for (i = 0; i < list.length; ++i) { + length += list[i].length + } + } - return object && object._writableState instanceof WritableState; + var buffer = Buffer.allocUnsafe(length) + var pos = 0 + for (i = 0; i < list.length; ++i) { + var buf = list[i] + if (isInstance(buf, Uint8Array)) { + buf = Buffer.from(buf) } - }); -} else { - realHasInstance = function (object) { - return object instanceof this; - }; + if (!Buffer.isBuffer(buf)) { + throw new TypeError('"list" argument must be an Array of Buffers') + } + buf.copy(buffer, pos) + pos += buf.length + } + return buffer } -function Writable(options) { - Duplex = Duplex || require('./_stream_duplex'); +function byteLength (string, encoding) { + if (Buffer.isBuffer(string)) { + return string.length + } + if (ArrayBuffer.isView(string) || isInstance(string, ArrayBuffer)) { + return string.byteLength + } + if (typeof string !== 'string') { + throw new TypeError( + 'The "string" argument must be one of type string, Buffer, or ArrayBuffer. ' + + 'Received type ' + typeof string + ) + } - // Writable ctor is applied to Duplexes, too. - // `realHasInstance` is necessary because using plain `instanceof` - // would return false, as no `_writableState` property is attached. + var len = string.length + var mustMatch = (arguments.length > 2 && arguments[2] === true) + if (!mustMatch && len === 0) return 0 - // Trying to use the custom `instanceof` for Writable here will also break the - // Node.js LazyTransform implementation, which has a non-trivial getter for - // `_writableState` that would lead to infinite recursion. - if (!realHasInstance.call(Writable, this) && !(this instanceof Duplex)) { - return new Writable(options); + // Use a for loop to avoid recursion + var loweredCase = false + for (;;) { + switch (encoding) { + case 'ascii': + case 'latin1': + case 'binary': + return len + case 'utf8': + case 'utf-8': + return utf8ToBytes(string).length + case 'ucs2': + case 'ucs-2': + case 'utf16le': + case 'utf-16le': + return len * 2 + case 'hex': + return len >>> 1 + case 'base64': + return base64ToBytes(string).length + default: + if (loweredCase) { + return mustMatch ? -1 : utf8ToBytes(string).length // assume utf8 + } + encoding = ('' + encoding).toLowerCase() + loweredCase = true + } } +} +Buffer.byteLength = byteLength - this._writableState = new WritableState(options, this); +function slowToString (encoding, start, end) { + var loweredCase = false - // legacy. - this.writable = true; + // No need to verify that "this.length <= MAX_UINT32" since it's a read-only + // property of a typed array. - if (options) { - if (typeof options.write === 'function') this._write = options.write; + // This behaves neither like String nor Uint8Array in that we set start/end + // to their upper/lower bounds if the value passed is out of range. + // undefined is handled specially as per ECMA-262 6th Edition, + // Section 13.3.3.7 Runtime Semantics: KeyedBindingInitialization. + if (start === undefined || start < 0) { + start = 0 + } + // Return early if start > this.length. Done here to prevent potential uint32 + // coercion fail below. + if (start > this.length) { + return '' + } - if (typeof options.writev === 'function') this._writev = options.writev; + if (end === undefined || end > this.length) { + end = this.length + } - if (typeof options.destroy === 'function') this._destroy = options.destroy; + if (end <= 0) { + return '' + } - if (typeof options.final === 'function') this._final = options.final; + // Force coersion to uint32. This will also coerce falsey/NaN values to 0. + end >>>= 0 + start >>>= 0 + + if (end <= start) { + return '' } - Stream.call(this); -} + if (!encoding) encoding = 'utf8' -// Otherwise people can pipe Writable streams, which is just wrong. -Writable.prototype.pipe = function () { - this.emit('error', new Error('Cannot pipe, not readable')); -}; + while (true) { + switch (encoding) { + case 'hex': + return hexSlice(this, start, end) -function writeAfterEnd(stream, cb) { - var er = new Error('write after end'); - // TODO: defer error events consistently everywhere, not just the cb - stream.emit('error', er); - pna.nextTick(cb, er); -} + case 'utf8': + case 'utf-8': + return utf8Slice(this, start, end) -// Checks that a user-supplied chunk is valid, especially for the particular -// mode the stream is in. Currently this means that `null` is never accepted -// and undefined/non-string values are only allowed in object mode. -function validChunk(stream, state, chunk, cb) { - var valid = true; - var er = false; + case 'ascii': + return asciiSlice(this, start, end) - if (chunk === null) { - er = new TypeError('May not write null values to stream'); - } else if (typeof chunk !== 'string' && chunk !== undefined && !state.objectMode) { - er = new TypeError('Invalid non-string/buffer chunk'); - } - if (er) { - stream.emit('error', er); - pna.nextTick(cb, er); - valid = false; - } - return valid; -} + case 'latin1': + case 'binary': + return latin1Slice(this, start, end) -Writable.prototype.write = function (chunk, encoding, cb) { - var state = this._writableState; - var ret = false; - var isBuf = !state.objectMode && _isUint8Array(chunk); + case 'base64': + return base64Slice(this, start, end) - if (isBuf && !Buffer.isBuffer(chunk)) { - chunk = _uint8ArrayToBuffer(chunk); - } + case 'ucs2': + case 'ucs-2': + case 'utf16le': + case 'utf-16le': + return utf16leSlice(this, start, end) - if (typeof encoding === 'function') { - cb = encoding; - encoding = null; + default: + if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding) + encoding = (encoding + '').toLowerCase() + loweredCase = true + } } +} - if (isBuf) encoding = 'buffer';else if (!encoding) encoding = state.defaultEncoding; +// This property is used by `Buffer.isBuffer` (and the `is-buffer` npm package) +// to detect a Buffer instance. It's not possible to use `instanceof Buffer` +// reliably in a browserify context because there could be multiple different +// copies of the 'buffer' package in use. This method works even for Buffer +// instances that were created from another copy of the `buffer` package. +// See: https://github.com/feross/buffer/issues/154 +Buffer.prototype._isBuffer = true - if (typeof cb !== 'function') cb = nop; +function swap (b, n, m) { + var i = b[n] + b[n] = b[m] + b[m] = i +} - if (state.ended) writeAfterEnd(this, cb);else if (isBuf || validChunk(this, state, chunk, cb)) { - state.pendingcb++; - ret = writeOrBuffer(this, state, isBuf, chunk, encoding, cb); +Buffer.prototype.swap16 = function swap16 () { + var len = this.length + if (len % 2 !== 0) { + throw new RangeError('Buffer size must be a multiple of 16-bits') + } + for (var i = 0; i < len; i += 2) { + swap(this, i, i + 1) } + return this +} - return ret; -}; +Buffer.prototype.swap32 = function swap32 () { + var len = this.length + if (len % 4 !== 0) { + throw new RangeError('Buffer size must be a multiple of 32-bits') + } + for (var i = 0; i < len; i += 4) { + swap(this, i, i + 3) + swap(this, i + 1, i + 2) + } + return this +} -Writable.prototype.cork = function () { - var state = this._writableState; +Buffer.prototype.swap64 = function swap64 () { + var len = this.length + if (len % 8 !== 0) { + throw new RangeError('Buffer size must be a multiple of 64-bits') + } + for (var i = 0; i < len; i += 8) { + swap(this, i, i + 7) + swap(this, i + 1, i + 6) + swap(this, i + 2, i + 5) + swap(this, i + 3, i + 4) + } + return this +} - state.corked++; -}; +Buffer.prototype.toString = function toString () { + var length = this.length + if (length === 0) return '' + if (arguments.length === 0) return utf8Slice(this, 0, length) + return slowToString.apply(this, arguments) +} -Writable.prototype.uncork = function () { - var state = this._writableState; +Buffer.prototype.toLocaleString = Buffer.prototype.toString - if (state.corked) { - state.corked--; +Buffer.prototype.equals = function equals (b) { + if (!Buffer.isBuffer(b)) throw new TypeError('Argument must be a Buffer') + if (this === b) return true + return Buffer.compare(this, b) === 0 +} - if (!state.writing && !state.corked && !state.finished && !state.bufferProcessing && state.bufferedRequest) clearBuffer(this, state); - } -}; +Buffer.prototype.inspect = function inspect () { + var str = '' + var max = exports.INSPECT_MAX_BYTES + str = this.toString('hex', 0, max).replace(/(.{2})/g, '$1 ').trim() + if (this.length > max) str += ' ... ' + return '' +} -Writable.prototype.setDefaultEncoding = function setDefaultEncoding(encoding) { - // node::ParseEncoding() requires lower case. - if (typeof encoding === 'string') encoding = encoding.toLowerCase(); - if (!(['hex', 'utf8', 'utf-8', 'ascii', 'binary', 'base64', 'ucs2', 'ucs-2', 'utf16le', 'utf-16le', 'raw'].indexOf((encoding + '').toLowerCase()) > -1)) throw new TypeError('Unknown encoding: ' + encoding); - this._writableState.defaultEncoding = encoding; - return this; -}; +Buffer.prototype.compare = function compare (target, start, end, thisStart, thisEnd) { + if (isInstance(target, Uint8Array)) { + target = Buffer.from(target, target.offset, target.byteLength) + } + if (!Buffer.isBuffer(target)) { + throw new TypeError( + 'The "target" argument must be one of type Buffer or Uint8Array. ' + + 'Received type ' + (typeof target) + ) + } -function decodeChunk(state, chunk, encoding) { - if (!state.objectMode && state.decodeStrings !== false && typeof chunk === 'string') { - chunk = Buffer.from(chunk, encoding); + if (start === undefined) { + start = 0 + } + if (end === undefined) { + end = target ? target.length : 0 + } + if (thisStart === undefined) { + thisStart = 0 + } + if (thisEnd === undefined) { + thisEnd = this.length } - return chunk; -} -Object.defineProperty(Writable.prototype, 'writableHighWaterMark', { - // making it explicit this property is not enumerable - // because otherwise some prototype manipulation in - // userland will fail - enumerable: false, - get: function () { - return this._writableState.highWaterMark; + if (start < 0 || end > target.length || thisStart < 0 || thisEnd > this.length) { + throw new RangeError('out of range index') } -}); -// if we're already writing something, then just put this -// in the queue, and wait our turn. Otherwise, call _write -// If we return false, then we need a drain event, so set that flag. -function writeOrBuffer(stream, state, isBuf, chunk, encoding, cb) { - if (!isBuf) { - var newChunk = decodeChunk(state, chunk, encoding); - if (chunk !== newChunk) { - isBuf = true; - encoding = 'buffer'; - chunk = newChunk; - } + if (thisStart >= thisEnd && start >= end) { + return 0 + } + if (thisStart >= thisEnd) { + return -1 + } + if (start >= end) { + return 1 } - var len = state.objectMode ? 1 : chunk.length; - state.length += len; + start >>>= 0 + end >>>= 0 + thisStart >>>= 0 + thisEnd >>>= 0 - var ret = state.length < state.highWaterMark; - // we must ensure that previous needDrain will not be reset to false. - if (!ret) state.needDrain = true; + if (this === target) return 0 - if (state.writing || state.corked) { - var last = state.lastBufferedRequest; - state.lastBufferedRequest = { - chunk: chunk, - encoding: encoding, - isBuf: isBuf, - callback: cb, - next: null - }; - if (last) { - last.next = state.lastBufferedRequest; - } else { - state.bufferedRequest = state.lastBufferedRequest; + var x = thisEnd - thisStart + var y = end - start + var len = Math.min(x, y) + + var thisCopy = this.slice(thisStart, thisEnd) + var targetCopy = target.slice(start, end) + + for (var i = 0; i < len; ++i) { + if (thisCopy[i] !== targetCopy[i]) { + x = thisCopy[i] + y = targetCopy[i] + break } - state.bufferedRequestCount += 1; - } else { - doWrite(stream, state, false, len, chunk, encoding, cb); } - return ret; + if (x < y) return -1 + if (y < x) return 1 + return 0 } -function doWrite(stream, state, writev, len, chunk, encoding, cb) { - state.writelen = len; - state.writecb = cb; - state.writing = true; - state.sync = true; - if (writev) stream._writev(chunk, state.onwrite);else stream._write(chunk, encoding, state.onwrite); - state.sync = false; -} +// Finds either the first index of `val` in `buffer` at offset >= `byteOffset`, +// OR the last index of `val` in `buffer` at offset <= `byteOffset`. +// +// Arguments: +// - buffer - a Buffer to search +// - val - a string, Buffer, or number +// - byteOffset - an index into `buffer`; will be clamped to an int32 +// - encoding - an optional encoding, relevant is val is a string +// - dir - true for indexOf, false for lastIndexOf +function bidirectionalIndexOf (buffer, val, byteOffset, encoding, dir) { + // Empty buffer means no match + if (buffer.length === 0) return -1 -function onwriteError(stream, state, sync, er, cb) { - --state.pendingcb; + // Normalize byteOffset + if (typeof byteOffset === 'string') { + encoding = byteOffset + byteOffset = 0 + } else if (byteOffset > 0x7fffffff) { + byteOffset = 0x7fffffff + } else if (byteOffset < -0x80000000) { + byteOffset = -0x80000000 + } + byteOffset = +byteOffset // Coerce to Number. + if (numberIsNaN(byteOffset)) { + // byteOffset: it it's undefined, null, NaN, "foo", etc, search whole buffer + byteOffset = dir ? 0 : (buffer.length - 1) + } - if (sync) { - // defer the callback if we are being called synchronously - // to avoid piling up things on the stack - pna.nextTick(cb, er); - // this can emit finish, and it will always happen - // after error - pna.nextTick(finishMaybe, stream, state); - stream._writableState.errorEmitted = true; - stream.emit('error', er); - } else { - // the caller expect this to happen before if - // it is async - cb(er); - stream._writableState.errorEmitted = true; - stream.emit('error', er); - // this can emit finish, but finish must - // always follow error - finishMaybe(stream, state); + // Normalize byteOffset: negative offsets start from the end of the buffer + if (byteOffset < 0) byteOffset = buffer.length + byteOffset + if (byteOffset >= buffer.length) { + if (dir) return -1 + else byteOffset = buffer.length - 1 + } else if (byteOffset < 0) { + if (dir) byteOffset = 0 + else return -1 } -} -function onwriteStateUpdate(state) { - state.writing = false; - state.writecb = null; - state.length -= state.writelen; - state.writelen = 0; -} + // Normalize val + if (typeof val === 'string') { + val = Buffer.from(val, encoding) + } -function onwrite(stream, er) { - var state = stream._writableState; - var sync = state.sync; - var cb = state.writecb; + // Finally, search either indexOf (if dir is true) or lastIndexOf + if (Buffer.isBuffer(val)) { + // Special case: looking for empty string/buffer always fails + if (val.length === 0) { + return -1 + } + return arrayIndexOf(buffer, val, byteOffset, encoding, dir) + } else if (typeof val === 'number') { + val = val & 0xFF // Search for a byte value [0-255] + if (typeof Uint8Array.prototype.indexOf === 'function') { + if (dir) { + return Uint8Array.prototype.indexOf.call(buffer, val, byteOffset) + } else { + return Uint8Array.prototype.lastIndexOf.call(buffer, val, byteOffset) + } + } + return arrayIndexOf(buffer, [ val ], byteOffset, encoding, dir) + } - onwriteStateUpdate(state); + throw new TypeError('val must be string, number or Buffer') +} - if (er) onwriteError(stream, state, sync, er, cb);else { - // Check if we're actually ready to finish, but don't emit yet - var finished = needFinish(state); +function arrayIndexOf (arr, val, byteOffset, encoding, dir) { + var indexSize = 1 + var arrLength = arr.length + var valLength = val.length - if (!finished && !state.corked && !state.bufferProcessing && state.bufferedRequest) { - clearBuffer(stream, state); + if (encoding !== undefined) { + encoding = String(encoding).toLowerCase() + if (encoding === 'ucs2' || encoding === 'ucs-2' || + encoding === 'utf16le' || encoding === 'utf-16le') { + if (arr.length < 2 || val.length < 2) { + return -1 + } + indexSize = 2 + arrLength /= 2 + valLength /= 2 + byteOffset /= 2 } + } - if (sync) { - /**/ - asyncWrite(afterWrite, stream, state, finished, cb); - /**/ + function read (buf, i) { + if (indexSize === 1) { + return buf[i] } else { - afterWrite(stream, state, finished, cb); + return buf.readUInt16BE(i * indexSize) } } -} -function afterWrite(stream, state, finished, cb) { - if (!finished) onwriteDrain(stream, state); - state.pendingcb--; - cb(); - finishMaybe(stream, state); + var i + if (dir) { + var foundIndex = -1 + for (i = byteOffset; i < arrLength; i++) { + if (read(arr, i) === read(val, foundIndex === -1 ? 0 : i - foundIndex)) { + if (foundIndex === -1) foundIndex = i + if (i - foundIndex + 1 === valLength) return foundIndex * indexSize + } else { + if (foundIndex !== -1) i -= i - foundIndex + foundIndex = -1 + } + } + } else { + if (byteOffset + valLength > arrLength) byteOffset = arrLength - valLength + for (i = byteOffset; i >= 0; i--) { + var found = true + for (var j = 0; j < valLength; j++) { + if (read(arr, i + j) !== read(val, j)) { + found = false + break + } + } + if (found) return i + } + } + + return -1 } -// Must force callback to be called on nextTick, so that we don't -// emit 'drain' before the write() consumer gets the 'false' return -// value, and has a chance to attach a 'drain' listener. -function onwriteDrain(stream, state) { - if (state.length === 0 && state.needDrain) { - state.needDrain = false; - stream.emit('drain'); - } +Buffer.prototype.includes = function includes (val, byteOffset, encoding) { + return this.indexOf(val, byteOffset, encoding) !== -1 } -// if there's something in the buffer waiting, then process it -function clearBuffer(stream, state) { - state.bufferProcessing = true; - var entry = state.bufferedRequest; +Buffer.prototype.indexOf = function indexOf (val, byteOffset, encoding) { + return bidirectionalIndexOf(this, val, byteOffset, encoding, true) +} - if (stream._writev && entry && entry.next) { - // Fast case, write everything using _writev() - var l = state.bufferedRequestCount; - var buffer = new Array(l); - var holder = state.corkedRequestsFree; - holder.entry = entry; +Buffer.prototype.lastIndexOf = function lastIndexOf (val, byteOffset, encoding) { + return bidirectionalIndexOf(this, val, byteOffset, encoding, false) +} - var count = 0; - var allBuffers = true; - while (entry) { - buffer[count] = entry; - if (!entry.isBuf) allBuffers = false; - entry = entry.next; - count += 1; - } - buffer.allBuffers = allBuffers; - - doWrite(stream, state, true, state.length, buffer, '', holder.finish); - - // doWrite is almost always async, defer these to save a bit of time - // as the hot path ends with doWrite - state.pendingcb++; - state.lastBufferedRequest = null; - if (holder.next) { - state.corkedRequestsFree = holder.next; - holder.next = null; - } else { - state.corkedRequestsFree = new CorkedRequest(state); - } - state.bufferedRequestCount = 0; +function hexWrite (buf, string, offset, length) { + offset = Number(offset) || 0 + var remaining = buf.length - offset + if (!length) { + length = remaining } else { - // Slow case, write chunks one-by-one - while (entry) { - var chunk = entry.chunk; - var encoding = entry.encoding; - var cb = entry.callback; - var len = state.objectMode ? 1 : chunk.length; - - doWrite(stream, state, false, len, chunk, encoding, cb); - entry = entry.next; - state.bufferedRequestCount--; - // if we didn't call the onwrite immediately, then - // it means that we need to wait until it does. - // also, that means that the chunk and cb are currently - // being processed, so move the buffer counter past them. - if (state.writing) { - break; - } + length = Number(length) + if (length > remaining) { + length = remaining } + } - if (entry === null) state.lastBufferedRequest = null; + var strLen = string.length + + if (length > strLen / 2) { + length = strLen / 2 + } + for (var i = 0; i < length; ++i) { + var parsed = parseInt(string.substr(i * 2, 2), 16) + if (numberIsNaN(parsed)) return i + buf[offset + i] = parsed } + return i +} - state.bufferedRequest = entry; - state.bufferProcessing = false; +function utf8Write (buf, string, offset, length) { + return blitBuffer(utf8ToBytes(string, buf.length - offset), buf, offset, length) } -Writable.prototype._write = function (chunk, encoding, cb) { - cb(new Error('_write() is not implemented')); -}; +function asciiWrite (buf, string, offset, length) { + return blitBuffer(asciiToBytes(string), buf, offset, length) +} -Writable.prototype._writev = null; +function latin1Write (buf, string, offset, length) { + return asciiWrite(buf, string, offset, length) +} -Writable.prototype.end = function (chunk, encoding, cb) { - var state = this._writableState; +function base64Write (buf, string, offset, length) { + return blitBuffer(base64ToBytes(string), buf, offset, length) +} - if (typeof chunk === 'function') { - cb = chunk; - chunk = null; - encoding = null; - } else if (typeof encoding === 'function') { - cb = encoding; - encoding = null; +function ucs2Write (buf, string, offset, length) { + return blitBuffer(utf16leToBytes(string, buf.length - offset), buf, offset, length) +} + +Buffer.prototype.write = function write (string, offset, length, encoding) { + // Buffer#write(string) + if (offset === undefined) { + encoding = 'utf8' + length = this.length + offset = 0 + // Buffer#write(string, encoding) + } else if (length === undefined && typeof offset === 'string') { + encoding = offset + length = this.length + offset = 0 + // Buffer#write(string, offset[, length][, encoding]) + } else if (isFinite(offset)) { + offset = offset >>> 0 + if (isFinite(length)) { + length = length >>> 0 + if (encoding === undefined) encoding = 'utf8' + } else { + encoding = length + length = undefined + } + } else { + throw new Error( + 'Buffer.write(string, encoding, offset[, length]) is no longer supported' + ) } - if (chunk !== null && chunk !== undefined) this.write(chunk, encoding); + var remaining = this.length - offset + if (length === undefined || length > remaining) length = remaining - // .end() fully uncorks - if (state.corked) { - state.corked = 1; - this.uncork(); + if ((string.length > 0 && (length < 0 || offset < 0)) || offset > this.length) { + throw new RangeError('Attempt to write outside buffer bounds') } - // ignore unnecessary end() calls. - if (!state.ending && !state.finished) endWritable(this, state, cb); -}; + if (!encoding) encoding = 'utf8' -function needFinish(state) { - return state.ending && state.length === 0 && state.bufferedRequest === null && !state.finished && !state.writing; -} -function callFinal(stream, state) { - stream._final(function (err) { - state.pendingcb--; - if (err) { - stream.emit('error', err); - } - state.prefinished = true; - stream.emit('prefinish'); - finishMaybe(stream, state); - }); -} -function prefinish(stream, state) { - if (!state.prefinished && !state.finalCalled) { - if (typeof stream._final === 'function') { - state.pendingcb++; - state.finalCalled = true; - pna.nextTick(callFinal, stream, state); - } else { - state.prefinished = true; - stream.emit('prefinish'); - } - } -} + var loweredCase = false + for (;;) { + switch (encoding) { + case 'hex': + return hexWrite(this, string, offset, length) -function finishMaybe(stream, state) { - var need = needFinish(state); - if (need) { - prefinish(stream, state); - if (state.pendingcb === 0) { - state.finished = true; - stream.emit('finish'); + case 'utf8': + case 'utf-8': + return utf8Write(this, string, offset, length) + + case 'ascii': + return asciiWrite(this, string, offset, length) + + case 'latin1': + case 'binary': + return latin1Write(this, string, offset, length) + + case 'base64': + // Warning: maxLength not taken into account in base64Write + return base64Write(this, string, offset, length) + + case 'ucs2': + case 'ucs-2': + case 'utf16le': + case 'utf-16le': + return ucs2Write(this, string, offset, length) + + default: + if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding) + encoding = ('' + encoding).toLowerCase() + loweredCase = true } } - return need; } -function endWritable(stream, state, cb) { - state.ending = true; - finishMaybe(stream, state); - if (cb) { - if (state.finished) pna.nextTick(cb);else stream.once('finish', cb); +Buffer.prototype.toJSON = function toJSON () { + return { + type: 'Buffer', + data: Array.prototype.slice.call(this._arr || this, 0) } - state.ended = true; - stream.writable = false; } -function onCorkedFinish(corkReq, state, err) { - var entry = corkReq.entry; - corkReq.entry = null; - while (entry) { - var cb = entry.callback; - state.pendingcb--; - cb(err); - entry = entry.next; - } - if (state.corkedRequestsFree) { - state.corkedRequestsFree.next = corkReq; +function base64Slice (buf, start, end) { + if (start === 0 && end === buf.length) { + return base64.fromByteArray(buf) } else { - state.corkedRequestsFree = corkReq; + return base64.fromByteArray(buf.slice(start, end)) } } -Object.defineProperty(Writable.prototype, 'destroyed', { - get: function () { - if (this._writableState === undefined) { - return false; +function utf8Slice (buf, start, end) { + end = Math.min(buf.length, end) + var res = [] + + var i = start + while (i < end) { + var firstByte = buf[i] + var codePoint = null + var bytesPerSequence = (firstByte > 0xEF) ? 4 + : (firstByte > 0xDF) ? 3 + : (firstByte > 0xBF) ? 2 + : 1 + + if (i + bytesPerSequence <= end) { + var secondByte, thirdByte, fourthByte, tempCodePoint + + switch (bytesPerSequence) { + case 1: + if (firstByte < 0x80) { + codePoint = firstByte + } + break + case 2: + secondByte = buf[i + 1] + if ((secondByte & 0xC0) === 0x80) { + tempCodePoint = (firstByte & 0x1F) << 0x6 | (secondByte & 0x3F) + if (tempCodePoint > 0x7F) { + codePoint = tempCodePoint + } + } + break + case 3: + secondByte = buf[i + 1] + thirdByte = buf[i + 2] + if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80) { + tempCodePoint = (firstByte & 0xF) << 0xC | (secondByte & 0x3F) << 0x6 | (thirdByte & 0x3F) + if (tempCodePoint > 0x7FF && (tempCodePoint < 0xD800 || tempCodePoint > 0xDFFF)) { + codePoint = tempCodePoint + } + } + break + case 4: + secondByte = buf[i + 1] + thirdByte = buf[i + 2] + fourthByte = buf[i + 3] + if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80 && (fourthByte & 0xC0) === 0x80) { + tempCodePoint = (firstByte & 0xF) << 0x12 | (secondByte & 0x3F) << 0xC | (thirdByte & 0x3F) << 0x6 | (fourthByte & 0x3F) + if (tempCodePoint > 0xFFFF && tempCodePoint < 0x110000) { + codePoint = tempCodePoint + } + } + } } - return this._writableState.destroyed; - }, - set: function (value) { - // we ignore the value if the stream - // has not been initialized yet - if (!this._writableState) { - return; + + if (codePoint === null) { + // we did not generate a valid codePoint so insert a + // replacement char (U+FFFD) and advance only 1 byte + codePoint = 0xFFFD + bytesPerSequence = 1 + } else if (codePoint > 0xFFFF) { + // encode to utf16 (surrogate pair dance) + codePoint -= 0x10000 + res.push(codePoint >>> 10 & 0x3FF | 0xD800) + codePoint = 0xDC00 | codePoint & 0x3FF } - // backward compatibility, the user is explicitly - // managing destroyed - this._writableState.destroyed = value; + res.push(codePoint) + i += bytesPerSequence } -}); -Writable.prototype.destroy = destroyImpl.destroy; -Writable.prototype._undestroy = destroyImpl.undestroy; -Writable.prototype._destroy = function (err, cb) { - this.end(); - cb(err); -}; -}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {},require("timers").setImmediate) -},{"./_stream_duplex":135,"./internal/streams/destroy":141,"./internal/streams/stream":142,"_process":122,"core-util-is":54,"inherits":104,"process-nextick-args":121,"safe-buffer":148,"timers":159,"util-deprecate":162}],140:[function(require,module,exports){ -'use strict'; + return decodeCodePointsArray(res) +} -function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } } +// Based on http://stackoverflow.com/a/22747272/680742, the browser with +// the lowest limit is Chrome, with 0x10000 args. +// We go 1 magnitude less, for safety +var MAX_ARGUMENTS_LENGTH = 0x1000 -var Buffer = require('safe-buffer').Buffer; -var util = require('util'); +function decodeCodePointsArray (codePoints) { + var len = codePoints.length + if (len <= MAX_ARGUMENTS_LENGTH) { + return String.fromCharCode.apply(String, codePoints) // avoid extra slice() + } -function copyBuffer(src, target, offset) { - src.copy(target, offset); + // Decode in chunks to avoid "call stack size exceeded". + var res = '' + var i = 0 + while (i < len) { + res += String.fromCharCode.apply( + String, + codePoints.slice(i, i += MAX_ARGUMENTS_LENGTH) + ) + } + return res } -module.exports = function () { - function BufferList() { - _classCallCheck(this, BufferList); +function asciiSlice (buf, start, end) { + var ret = '' + end = Math.min(buf.length, end) - this.head = null; - this.tail = null; - this.length = 0; + for (var i = start; i < end; ++i) { + ret += String.fromCharCode(buf[i] & 0x7F) } + return ret +} - BufferList.prototype.push = function push(v) { - var entry = { data: v, next: null }; - if (this.length > 0) this.tail.next = entry;else this.head = entry; - this.tail = entry; - ++this.length; - }; +function latin1Slice (buf, start, end) { + var ret = '' + end = Math.min(buf.length, end) - BufferList.prototype.unshift = function unshift(v) { - var entry = { data: v, next: this.head }; - if (this.length === 0) this.tail = entry; - this.head = entry; - ++this.length; - }; + for (var i = start; i < end; ++i) { + ret += String.fromCharCode(buf[i]) + } + return ret +} - BufferList.prototype.shift = function shift() { - if (this.length === 0) return; - var ret = this.head.data; - if (this.length === 1) this.head = this.tail = null;else this.head = this.head.next; - --this.length; - return ret; - }; +function hexSlice (buf, start, end) { + var len = buf.length - BufferList.prototype.clear = function clear() { - this.head = this.tail = null; - this.length = 0; - }; + if (!start || start < 0) start = 0 + if (!end || end < 0 || end > len) end = len - BufferList.prototype.join = function join(s) { - if (this.length === 0) return ''; - var p = this.head; - var ret = '' + p.data; - while (p = p.next) { - ret += s + p.data; - }return ret; - }; + var out = '' + for (var i = start; i < end; ++i) { + out += toHex(buf[i]) + } + return out +} - BufferList.prototype.concat = function concat(n) { - if (this.length === 0) return Buffer.alloc(0); - if (this.length === 1) return this.head.data; - var ret = Buffer.allocUnsafe(n >>> 0); - var p = this.head; - var i = 0; - while (p) { - copyBuffer(p.data, ret, i); - i += p.data.length; - p = p.next; - } - return ret; - }; +function utf16leSlice (buf, start, end) { + var bytes = buf.slice(start, end) + var res = '' + for (var i = 0; i < bytes.length; i += 2) { + res += String.fromCharCode(bytes[i] + (bytes[i + 1] * 256)) + } + return res +} - return BufferList; -}(); +Buffer.prototype.slice = function slice (start, end) { + var len = this.length + start = ~~start + end = end === undefined ? len : ~~end -if (util && util.inspect && util.inspect.custom) { - module.exports.prototype[util.inspect.custom] = function () { - var obj = util.inspect({ length: this.length }); - return this.constructor.name + ' ' + obj; - }; -} -},{"safe-buffer":148,"util":22}],141:[function(require,module,exports){ -'use strict'; + if (start < 0) { + start += len + if (start < 0) start = 0 + } else if (start > len) { + start = len + } -/**/ + if (end < 0) { + end += len + if (end < 0) end = 0 + } else if (end > len) { + end = len + } -var pna = require('process-nextick-args'); -/**/ + if (end < start) end = start -// undocumented cb() API, needed for core, not for public API -function destroy(err, cb) { - var _this = this; + var newBuf = this.subarray(start, end) + // Return an augmented `Uint8Array` instance + newBuf.__proto__ = Buffer.prototype + return newBuf +} - var readableDestroyed = this._readableState && this._readableState.destroyed; - var writableDestroyed = this._writableState && this._writableState.destroyed; +/* + * Need to make sure that buffer isn't trying to write out of bounds. + */ +function checkOffset (offset, ext, length) { + if ((offset % 1) !== 0 || offset < 0) throw new RangeError('offset is not uint') + if (offset + ext > length) throw new RangeError('Trying to access beyond buffer length') +} - if (readableDestroyed || writableDestroyed) { - if (cb) { - cb(err); - } else if (err && (!this._writableState || !this._writableState.errorEmitted)) { - pna.nextTick(emitErrorNT, this, err); - } - return this; +Buffer.prototype.readUIntLE = function readUIntLE (offset, byteLength, noAssert) { + offset = offset >>> 0 + byteLength = byteLength >>> 0 + if (!noAssert) checkOffset(offset, byteLength, this.length) + + var val = this[offset] + var mul = 1 + var i = 0 + while (++i < byteLength && (mul *= 0x100)) { + val += this[offset + i] * mul } - // we set destroyed to true before firing error callbacks in order - // to make it re-entrance safe in case destroy() is called within callbacks + return val +} - if (this._readableState) { - this._readableState.destroyed = true; +Buffer.prototype.readUIntBE = function readUIntBE (offset, byteLength, noAssert) { + offset = offset >>> 0 + byteLength = byteLength >>> 0 + if (!noAssert) { + checkOffset(offset, byteLength, this.length) } - // if this is a duplex stream mark the writable part as destroyed as well - if (this._writableState) { - this._writableState.destroyed = true; + var val = this[offset + --byteLength] + var mul = 1 + while (byteLength > 0 && (mul *= 0x100)) { + val += this[offset + --byteLength] * mul } - this._destroy(err || null, function (err) { - if (!cb && err) { - pna.nextTick(emitErrorNT, _this, err); - if (_this._writableState) { - _this._writableState.errorEmitted = true; - } - } else if (cb) { - cb(err); - } - }); + return val +} - return this; +Buffer.prototype.readUInt8 = function readUInt8 (offset, noAssert) { + offset = offset >>> 0 + if (!noAssert) checkOffset(offset, 1, this.length) + return this[offset] } -function undestroy() { - if (this._readableState) { - this._readableState.destroyed = false; - this._readableState.reading = false; - this._readableState.ended = false; - this._readableState.endEmitted = false; - } - - if (this._writableState) { - this._writableState.destroyed = false; - this._writableState.ended = false; - this._writableState.ending = false; - this._writableState.finished = false; - this._writableState.errorEmitted = false; - } +Buffer.prototype.readUInt16LE = function readUInt16LE (offset, noAssert) { + offset = offset >>> 0 + if (!noAssert) checkOffset(offset, 2, this.length) + return this[offset] | (this[offset + 1] << 8) } -function emitErrorNT(self, err) { - self.emit('error', err); +Buffer.prototype.readUInt16BE = function readUInt16BE (offset, noAssert) { + offset = offset >>> 0 + if (!noAssert) checkOffset(offset, 2, this.length) + return (this[offset] << 8) | this[offset + 1] } -module.exports = { - destroy: destroy, - undestroy: undestroy -}; -},{"process-nextick-args":121}],142:[function(require,module,exports){ -module.exports = require('events').EventEmitter; - -},{"events":87}],143:[function(require,module,exports){ -module.exports = require('./readable').PassThrough - -},{"./readable":144}],144:[function(require,module,exports){ -exports = module.exports = require('./lib/_stream_readable.js'); -exports.Stream = exports; -exports.Readable = exports; -exports.Writable = require('./lib/_stream_writable.js'); -exports.Duplex = require('./lib/_stream_duplex.js'); -exports.Transform = require('./lib/_stream_transform.js'); -exports.PassThrough = require('./lib/_stream_passthrough.js'); - -},{"./lib/_stream_duplex.js":135,"./lib/_stream_passthrough.js":136,"./lib/_stream_readable.js":137,"./lib/_stream_transform.js":138,"./lib/_stream_writable.js":139}],145:[function(require,module,exports){ -module.exports = require('./readable').Transform - -},{"./readable":144}],146:[function(require,module,exports){ -module.exports = require('./lib/_stream_writable.js'); - -},{"./lib/_stream_writable.js":139}],147:[function(require,module,exports){ -'use strict' -var Buffer = require('buffer').Buffer -var inherits = require('inherits') -var HashBase = require('hash-base') - -var ARRAY16 = new Array(16) +Buffer.prototype.readUInt32LE = function readUInt32LE (offset, noAssert) { + offset = offset >>> 0 + if (!noAssert) checkOffset(offset, 4, this.length) -var zl = [ - 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, - 7, 4, 13, 1, 10, 6, 15, 3, 12, 0, 9, 5, 2, 14, 11, 8, - 3, 10, 14, 4, 9, 15, 8, 1, 2, 7, 0, 6, 13, 11, 5, 12, - 1, 9, 11, 10, 0, 8, 12, 4, 13, 3, 7, 15, 14, 5, 6, 2, - 4, 0, 5, 9, 7, 12, 2, 10, 14, 1, 3, 8, 11, 6, 15, 13 -] + return ((this[offset]) | + (this[offset + 1] << 8) | + (this[offset + 2] << 16)) + + (this[offset + 3] * 0x1000000) +} -var zr = [ - 5, 14, 7, 0, 9, 2, 11, 4, 13, 6, 15, 8, 1, 10, 3, 12, - 6, 11, 3, 7, 0, 13, 5, 10, 14, 15, 8, 12, 4, 9, 1, 2, - 15, 5, 1, 3, 7, 14, 6, 9, 11, 8, 12, 2, 10, 0, 4, 13, - 8, 6, 4, 1, 3, 11, 15, 0, 5, 12, 2, 13, 9, 7, 10, 14, - 12, 15, 10, 4, 1, 5, 8, 7, 6, 2, 13, 14, 0, 3, 9, 11 -] +Buffer.prototype.readUInt32BE = function readUInt32BE (offset, noAssert) { + offset = offset >>> 0 + if (!noAssert) checkOffset(offset, 4, this.length) -var sl = [ - 11, 14, 15, 12, 5, 8, 7, 9, 11, 13, 14, 15, 6, 7, 9, 8, - 7, 6, 8, 13, 11, 9, 7, 15, 7, 12, 15, 9, 11, 7, 13, 12, - 11, 13, 6, 7, 14, 9, 13, 15, 14, 8, 13, 6, 5, 12, 7, 5, - 11, 12, 14, 15, 14, 15, 9, 8, 9, 14, 5, 6, 8, 6, 5, 12, - 9, 15, 5, 11, 6, 8, 13, 12, 5, 12, 13, 14, 11, 8, 5, 6 -] + return (this[offset] * 0x1000000) + + ((this[offset + 1] << 16) | + (this[offset + 2] << 8) | + this[offset + 3]) +} -var sr = [ - 8, 9, 9, 11, 13, 15, 15, 5, 7, 7, 8, 11, 14, 14, 12, 6, - 9, 13, 15, 7, 12, 8, 9, 11, 7, 7, 12, 7, 6, 15, 13, 11, - 9, 7, 15, 11, 8, 6, 6, 14, 12, 13, 5, 14, 13, 13, 7, 5, - 15, 5, 8, 11, 14, 14, 6, 14, 6, 9, 12, 9, 12, 5, 15, 8, - 8, 5, 12, 9, 12, 5, 14, 6, 8, 13, 6, 5, 15, 13, 11, 11 -] +Buffer.prototype.readIntLE = function readIntLE (offset, byteLength, noAssert) { + offset = offset >>> 0 + byteLength = byteLength >>> 0 + if (!noAssert) checkOffset(offset, byteLength, this.length) -var hl = [0x00000000, 0x5a827999, 0x6ed9eba1, 0x8f1bbcdc, 0xa953fd4e] -var hr = [0x50a28be6, 0x5c4dd124, 0x6d703ef3, 0x7a6d76e9, 0x00000000] + var val = this[offset] + var mul = 1 + var i = 0 + while (++i < byteLength && (mul *= 0x100)) { + val += this[offset + i] * mul + } + mul *= 0x80 -function RIPEMD160 () { - HashBase.call(this, 64) + if (val >= mul) val -= Math.pow(2, 8 * byteLength) - // state - this._a = 0x67452301 - this._b = 0xefcdab89 - this._c = 0x98badcfe - this._d = 0x10325476 - this._e = 0xc3d2e1f0 + return val } -inherits(RIPEMD160, HashBase) - -RIPEMD160.prototype._update = function () { - var words = ARRAY16 - for (var j = 0; j < 16; ++j) words[j] = this._block.readInt32LE(j * 4) - - var al = this._a | 0 - var bl = this._b | 0 - var cl = this._c | 0 - var dl = this._d | 0 - var el = this._e | 0 +Buffer.prototype.readIntBE = function readIntBE (offset, byteLength, noAssert) { + offset = offset >>> 0 + byteLength = byteLength >>> 0 + if (!noAssert) checkOffset(offset, byteLength, this.length) - var ar = this._a | 0 - var br = this._b | 0 - var cr = this._c | 0 - var dr = this._d | 0 - var er = this._e | 0 + var i = byteLength + var mul = 1 + var val = this[offset + --i] + while (i > 0 && (mul *= 0x100)) { + val += this[offset + --i] * mul + } + mul *= 0x80 - // computation - for (var i = 0; i < 80; i += 1) { - var tl - var tr - if (i < 16) { - tl = fn1(al, bl, cl, dl, el, words[zl[i]], hl[0], sl[i]) - tr = fn5(ar, br, cr, dr, er, words[zr[i]], hr[0], sr[i]) - } else if (i < 32) { - tl = fn2(al, bl, cl, dl, el, words[zl[i]], hl[1], sl[i]) - tr = fn4(ar, br, cr, dr, er, words[zr[i]], hr[1], sr[i]) - } else if (i < 48) { - tl = fn3(al, bl, cl, dl, el, words[zl[i]], hl[2], sl[i]) - tr = fn3(ar, br, cr, dr, er, words[zr[i]], hr[2], sr[i]) - } else if (i < 64) { - tl = fn4(al, bl, cl, dl, el, words[zl[i]], hl[3], sl[i]) - tr = fn2(ar, br, cr, dr, er, words[zr[i]], hr[3], sr[i]) - } else { // if (i<80) { - tl = fn5(al, bl, cl, dl, el, words[zl[i]], hl[4], sl[i]) - tr = fn1(ar, br, cr, dr, er, words[zr[i]], hr[4], sr[i]) - } + if (val >= mul) val -= Math.pow(2, 8 * byteLength) - al = el - el = dl - dl = rotl(cl, 10) - cl = bl - bl = tl + return val +} - ar = er - er = dr - dr = rotl(cr, 10) - cr = br - br = tr - } +Buffer.prototype.readInt8 = function readInt8 (offset, noAssert) { + offset = offset >>> 0 + if (!noAssert) checkOffset(offset, 1, this.length) + if (!(this[offset] & 0x80)) return (this[offset]) + return ((0xff - this[offset] + 1) * -1) +} - // update state - var t = (this._b + cl + dr) | 0 - this._b = (this._c + dl + er) | 0 - this._c = (this._d + el + ar) | 0 - this._d = (this._e + al + br) | 0 - this._e = (this._a + bl + cr) | 0 - this._a = t +Buffer.prototype.readInt16LE = function readInt16LE (offset, noAssert) { + offset = offset >>> 0 + if (!noAssert) checkOffset(offset, 2, this.length) + var val = this[offset] | (this[offset + 1] << 8) + return (val & 0x8000) ? val | 0xFFFF0000 : val } -RIPEMD160.prototype._digest = function () { - // create padding and handle blocks - this._block[this._blockOffset++] = 0x80 - if (this._blockOffset > 56) { - this._block.fill(0, this._blockOffset, 64) - this._update() - this._blockOffset = 0 - } +Buffer.prototype.readInt16BE = function readInt16BE (offset, noAssert) { + offset = offset >>> 0 + if (!noAssert) checkOffset(offset, 2, this.length) + var val = this[offset + 1] | (this[offset] << 8) + return (val & 0x8000) ? val | 0xFFFF0000 : val +} - this._block.fill(0, this._blockOffset, 56) - this._block.writeUInt32LE(this._length[0], 56) - this._block.writeUInt32LE(this._length[1], 60) - this._update() +Buffer.prototype.readInt32LE = function readInt32LE (offset, noAssert) { + offset = offset >>> 0 + if (!noAssert) checkOffset(offset, 4, this.length) - // produce result - var buffer = Buffer.alloc ? Buffer.alloc(20) : new Buffer(20) - buffer.writeInt32LE(this._a, 0) - buffer.writeInt32LE(this._b, 4) - buffer.writeInt32LE(this._c, 8) - buffer.writeInt32LE(this._d, 12) - buffer.writeInt32LE(this._e, 16) - return buffer + return (this[offset]) | + (this[offset + 1] << 8) | + (this[offset + 2] << 16) | + (this[offset + 3] << 24) } -function rotl (x, n) { - return (x << n) | (x >>> (32 - n)) -} +Buffer.prototype.readInt32BE = function readInt32BE (offset, noAssert) { + offset = offset >>> 0 + if (!noAssert) checkOffset(offset, 4, this.length) -function fn1 (a, b, c, d, e, m, k, s) { - return (rotl((a + (b ^ c ^ d) + m + k) | 0, s) + e) | 0 + return (this[offset] << 24) | + (this[offset + 1] << 16) | + (this[offset + 2] << 8) | + (this[offset + 3]) } -function fn2 (a, b, c, d, e, m, k, s) { - return (rotl((a + ((b & c) | ((~b) & d)) + m + k) | 0, s) + e) | 0 +Buffer.prototype.readFloatLE = function readFloatLE (offset, noAssert) { + offset = offset >>> 0 + if (!noAssert) checkOffset(offset, 4, this.length) + return ieee754.read(this, offset, true, 23, 4) } -function fn3 (a, b, c, d, e, m, k, s) { - return (rotl((a + ((b | (~c)) ^ d) + m + k) | 0, s) + e) | 0 +Buffer.prototype.readFloatBE = function readFloatBE (offset, noAssert) { + offset = offset >>> 0 + if (!noAssert) checkOffset(offset, 4, this.length) + return ieee754.read(this, offset, false, 23, 4) } -function fn4 (a, b, c, d, e, m, k, s) { - return (rotl((a + ((b & d) | (c & (~d))) + m + k) | 0, s) + e) | 0 +Buffer.prototype.readDoubleLE = function readDoubleLE (offset, noAssert) { + offset = offset >>> 0 + if (!noAssert) checkOffset(offset, 8, this.length) + return ieee754.read(this, offset, true, 52, 8) } -function fn5 (a, b, c, d, e, m, k, s) { - return (rotl((a + (b ^ (c | (~d))) + m + k) | 0, s) + e) | 0 +Buffer.prototype.readDoubleBE = function readDoubleBE (offset, noAssert) { + offset = offset >>> 0 + if (!noAssert) checkOffset(offset, 8, this.length) + return ieee754.read(this, offset, false, 52, 8) } -module.exports = RIPEMD160 +function checkInt (buf, value, offset, ext, max, min) { + if (!Buffer.isBuffer(buf)) throw new TypeError('"buffer" argument must be a Buffer instance') + if (value > max || value < min) throw new RangeError('"value" argument is out of bounds') + if (offset + ext > buf.length) throw new RangeError('Index out of range') +} -},{"buffer":52,"hash-base":89,"inherits":104}],148:[function(require,module,exports){ -/* eslint-disable node/no-deprecated-api */ -var buffer = require('buffer') -var Buffer = buffer.Buffer +Buffer.prototype.writeUIntLE = function writeUIntLE (value, offset, byteLength, noAssert) { + value = +value + offset = offset >>> 0 + byteLength = byteLength >>> 0 + if (!noAssert) { + var maxBytes = Math.pow(2, 8 * byteLength) - 1 + checkInt(this, value, offset, byteLength, maxBytes, 0) + } -// alternative to using Object.keys for old browsers -function copyProps (src, dst) { - for (var key in src) { - dst[key] = src[key] + var mul = 1 + var i = 0 + this[offset] = value & 0xFF + while (++i < byteLength && (mul *= 0x100)) { + this[offset + i] = (value / mul) & 0xFF } -} -if (Buffer.from && Buffer.alloc && Buffer.allocUnsafe && Buffer.allocUnsafeSlow) { - module.exports = buffer -} else { - // Copy properties from require('buffer') - copyProps(buffer, exports) - exports.Buffer = SafeBuffer -} -function SafeBuffer (arg, encodingOrOffset, length) { - return Buffer(arg, encodingOrOffset, length) + return offset + byteLength } -// Copy static methods from Buffer -copyProps(Buffer, SafeBuffer) - -SafeBuffer.from = function (arg, encodingOrOffset, length) { - if (typeof arg === 'number') { - throw new TypeError('Argument must not be a number') +Buffer.prototype.writeUIntBE = function writeUIntBE (value, offset, byteLength, noAssert) { + value = +value + offset = offset >>> 0 + byteLength = byteLength >>> 0 + if (!noAssert) { + var maxBytes = Math.pow(2, 8 * byteLength) - 1 + checkInt(this, value, offset, byteLength, maxBytes, 0) } - return Buffer(arg, encodingOrOffset, length) -} -SafeBuffer.alloc = function (size, fill, encoding) { - if (typeof size !== 'number') { - throw new TypeError('Argument must be a number') - } - var buf = Buffer(size) - if (fill !== undefined) { - if (typeof encoding === 'string') { - buf.fill(fill, encoding) - } else { - buf.fill(fill) - } - } else { - buf.fill(0) + var i = byteLength - 1 + var mul = 1 + this[offset + i] = value & 0xFF + while (--i >= 0 && (mul *= 0x100)) { + this[offset + i] = (value / mul) & 0xFF } - return buf -} -SafeBuffer.allocUnsafe = function (size) { - if (typeof size !== 'number') { - throw new TypeError('Argument must be a number') - } - return Buffer(size) + return offset + byteLength } -SafeBuffer.allocUnsafeSlow = function (size) { - if (typeof size !== 'number') { - throw new TypeError('Argument must be a number') - } - return buffer.SlowBuffer(size) +Buffer.prototype.writeUInt8 = function writeUInt8 (value, offset, noAssert) { + value = +value + offset = offset >>> 0 + if (!noAssert) checkInt(this, value, offset, 1, 0xff, 0) + this[offset] = (value & 0xff) + return offset + 1 } -},{"buffer":52}],149:[function(require,module,exports){ -var Buffer = require('safe-buffer').Buffer - -// prototype class for hash functions -function Hash (blockSize, finalSize) { - this._block = Buffer.alloc(blockSize) - this._finalSize = finalSize - this._blockSize = blockSize - this._len = 0 +Buffer.prototype.writeUInt16LE = function writeUInt16LE (value, offset, noAssert) { + value = +value + offset = offset >>> 0 + if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0) + this[offset] = (value & 0xff) + this[offset + 1] = (value >>> 8) + return offset + 2 } -Hash.prototype.update = function (data, enc) { - if (typeof data === 'string') { - enc = enc || 'utf8' - data = Buffer.from(data, enc) - } +Buffer.prototype.writeUInt16BE = function writeUInt16BE (value, offset, noAssert) { + value = +value + offset = offset >>> 0 + if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0) + this[offset] = (value >>> 8) + this[offset + 1] = (value & 0xff) + return offset + 2 +} - var block = this._block - var blockSize = this._blockSize - var length = data.length - var accum = this._len +Buffer.prototype.writeUInt32LE = function writeUInt32LE (value, offset, noAssert) { + value = +value + offset = offset >>> 0 + if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0) + this[offset + 3] = (value >>> 24) + this[offset + 2] = (value >>> 16) + this[offset + 1] = (value >>> 8) + this[offset] = (value & 0xff) + return offset + 4 +} - for (var offset = 0; offset < length;) { - var assigned = accum % blockSize - var remainder = Math.min(length - offset, blockSize - assigned) +Buffer.prototype.writeUInt32BE = function writeUInt32BE (value, offset, noAssert) { + value = +value + offset = offset >>> 0 + if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0) + this[offset] = (value >>> 24) + this[offset + 1] = (value >>> 16) + this[offset + 2] = (value >>> 8) + this[offset + 3] = (value & 0xff) + return offset + 4 +} - for (var i = 0; i < remainder; i++) { - block[assigned + i] = data[offset + i] - } +Buffer.prototype.writeIntLE = function writeIntLE (value, offset, byteLength, noAssert) { + value = +value + offset = offset >>> 0 + if (!noAssert) { + var limit = Math.pow(2, (8 * byteLength) - 1) - accum += remainder - offset += remainder + checkInt(this, value, offset, byteLength, limit - 1, -limit) + } - if ((accum % blockSize) === 0) { - this._update(block) + var i = 0 + var mul = 1 + var sub = 0 + this[offset] = value & 0xFF + while (++i < byteLength && (mul *= 0x100)) { + if (value < 0 && sub === 0 && this[offset + i - 1] !== 0) { + sub = 1 } + this[offset + i] = ((value / mul) >> 0) - sub & 0xFF } - this._len += length - return this + return offset + byteLength } -Hash.prototype.digest = function (enc) { - var rem = this._len % this._blockSize - - this._block[rem] = 0x80 - - // zero (rem + 1) trailing bits, where (rem + 1) is the smallest - // non-negative solution to the equation (length + 1 + (rem + 1)) === finalSize mod blockSize - this._block.fill(0, rem + 1) +Buffer.prototype.writeIntBE = function writeIntBE (value, offset, byteLength, noAssert) { + value = +value + offset = offset >>> 0 + if (!noAssert) { + var limit = Math.pow(2, (8 * byteLength) - 1) - if (rem >= this._finalSize) { - this._update(this._block) - this._block.fill(0) + checkInt(this, value, offset, byteLength, limit - 1, -limit) } - var bits = this._len * 8 - - // uint32 - if (bits <= 0xffffffff) { - this._block.writeUInt32BE(bits, this._blockSize - 4) - - // uint64 - } else { - var lowBits = (bits & 0xffffffff) >>> 0 - var highBits = (bits - lowBits) / 0x100000000 - - this._block.writeUInt32BE(highBits, this._blockSize - 8) - this._block.writeUInt32BE(lowBits, this._blockSize - 4) + var i = byteLength - 1 + var mul = 1 + var sub = 0 + this[offset + i] = value & 0xFF + while (--i >= 0 && (mul *= 0x100)) { + if (value < 0 && sub === 0 && this[offset + i + 1] !== 0) { + sub = 1 + } + this[offset + i] = ((value / mul) >> 0) - sub & 0xFF } - this._update(this._block) - var hash = this._hash() - - return enc ? hash.toString(enc) : hash + return offset + byteLength } -Hash.prototype._update = function () { - throw new Error('_update must be implemented by subclass') +Buffer.prototype.writeInt8 = function writeInt8 (value, offset, noAssert) { + value = +value + offset = offset >>> 0 + if (!noAssert) checkInt(this, value, offset, 1, 0x7f, -0x80) + if (value < 0) value = 0xff + value + 1 + this[offset] = (value & 0xff) + return offset + 1 } -module.exports = Hash - -},{"safe-buffer":148}],150:[function(require,module,exports){ -var exports = module.exports = function SHA (algorithm) { - algorithm = algorithm.toLowerCase() - - var Algorithm = exports[algorithm] - if (!Algorithm) throw new Error(algorithm + ' is not supported (we accept pull requests)') +Buffer.prototype.writeInt16LE = function writeInt16LE (value, offset, noAssert) { + value = +value + offset = offset >>> 0 + if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000) + this[offset] = (value & 0xff) + this[offset + 1] = (value >>> 8) + return offset + 2 +} - return new Algorithm() +Buffer.prototype.writeInt16BE = function writeInt16BE (value, offset, noAssert) { + value = +value + offset = offset >>> 0 + if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000) + this[offset] = (value >>> 8) + this[offset + 1] = (value & 0xff) + return offset + 2 } -exports.sha = require('./sha') -exports.sha1 = require('./sha1') -exports.sha224 = require('./sha224') -exports.sha256 = require('./sha256') -exports.sha384 = require('./sha384') -exports.sha512 = require('./sha512') - -},{"./sha":151,"./sha1":152,"./sha224":153,"./sha256":154,"./sha384":155,"./sha512":156}],151:[function(require,module,exports){ -/* - * A JavaScript implementation of the Secure Hash Algorithm, SHA-0, as defined - * in FIPS PUB 180-1 - * This source code is derived from sha1.js of the same repository. - * The difference between SHA-0 and SHA-1 is just a bitwise rotate left - * operation was added. - */ - -var inherits = require('inherits') -var Hash = require('./hash') -var Buffer = require('safe-buffer').Buffer - -var K = [ - 0x5a827999, 0x6ed9eba1, 0x8f1bbcdc | 0, 0xca62c1d6 | 0 -] - -var W = new Array(80) - -function Sha () { - this.init() - this._w = W - - Hash.call(this, 64, 56) +Buffer.prototype.writeInt32LE = function writeInt32LE (value, offset, noAssert) { + value = +value + offset = offset >>> 0 + if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000) + this[offset] = (value & 0xff) + this[offset + 1] = (value >>> 8) + this[offset + 2] = (value >>> 16) + this[offset + 3] = (value >>> 24) + return offset + 4 } -inherits(Sha, Hash) +Buffer.prototype.writeInt32BE = function writeInt32BE (value, offset, noAssert) { + value = +value + offset = offset >>> 0 + if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000) + if (value < 0) value = 0xffffffff + value + 1 + this[offset] = (value >>> 24) + this[offset + 1] = (value >>> 16) + this[offset + 2] = (value >>> 8) + this[offset + 3] = (value & 0xff) + return offset + 4 +} -Sha.prototype.init = function () { - this._a = 0x67452301 - this._b = 0xefcdab89 - this._c = 0x98badcfe - this._d = 0x10325476 - this._e = 0xc3d2e1f0 +function checkIEEE754 (buf, value, offset, ext, max, min) { + if (offset + ext > buf.length) throw new RangeError('Index out of range') + if (offset < 0) throw new RangeError('Index out of range') +} - return this +function writeFloat (buf, value, offset, littleEndian, noAssert) { + value = +value + offset = offset >>> 0 + if (!noAssert) { + checkIEEE754(buf, value, offset, 4, 3.4028234663852886e+38, -3.4028234663852886e+38) + } + ieee754.write(buf, value, offset, littleEndian, 23, 4) + return offset + 4 } -function rotl5 (num) { - return (num << 5) | (num >>> 27) +Buffer.prototype.writeFloatLE = function writeFloatLE (value, offset, noAssert) { + return writeFloat(this, value, offset, true, noAssert) } -function rotl30 (num) { - return (num << 30) | (num >>> 2) +Buffer.prototype.writeFloatBE = function writeFloatBE (value, offset, noAssert) { + return writeFloat(this, value, offset, false, noAssert) } -function ft (s, b, c, d) { - if (s === 0) return (b & c) | ((~b) & d) - if (s === 2) return (b & c) | (b & d) | (c & d) - return b ^ c ^ d +function writeDouble (buf, value, offset, littleEndian, noAssert) { + value = +value + offset = offset >>> 0 + if (!noAssert) { + checkIEEE754(buf, value, offset, 8, 1.7976931348623157E+308, -1.7976931348623157E+308) + } + ieee754.write(buf, value, offset, littleEndian, 52, 8) + return offset + 8 } -Sha.prototype._update = function (M) { - var W = this._w +Buffer.prototype.writeDoubleLE = function writeDoubleLE (value, offset, noAssert) { + return writeDouble(this, value, offset, true, noAssert) +} - var a = this._a | 0 - var b = this._b | 0 - var c = this._c | 0 - var d = this._d | 0 - var e = this._e | 0 +Buffer.prototype.writeDoubleBE = function writeDoubleBE (value, offset, noAssert) { + return writeDouble(this, value, offset, false, noAssert) +} - for (var i = 0; i < 16; ++i) W[i] = M.readInt32BE(i * 4) - for (; i < 80; ++i) W[i] = W[i - 3] ^ W[i - 8] ^ W[i - 14] ^ W[i - 16] +// copy(targetBuffer, targetStart=0, sourceStart=0, sourceEnd=buffer.length) +Buffer.prototype.copy = function copy (target, targetStart, start, end) { + if (!Buffer.isBuffer(target)) throw new TypeError('argument should be a Buffer') + if (!start) start = 0 + if (!end && end !== 0) end = this.length + if (targetStart >= target.length) targetStart = target.length + if (!targetStart) targetStart = 0 + if (end > 0 && end < start) end = start - for (var j = 0; j < 80; ++j) { - var s = ~~(j / 20) - var t = (rotl5(a) + ft(s, b, c, d) + e + W[j] + K[s]) | 0 + // Copy 0 bytes; we're done + if (end === start) return 0 + if (target.length === 0 || this.length === 0) return 0 - e = d - d = c - c = rotl30(b) - b = a - a = t + // Fatal error conditions + if (targetStart < 0) { + throw new RangeError('targetStart out of bounds') } + if (start < 0 || start >= this.length) throw new RangeError('Index out of range') + if (end < 0) throw new RangeError('sourceEnd out of bounds') - this._a = (a + this._a) | 0 - this._b = (b + this._b) | 0 - this._c = (c + this._c) | 0 - this._d = (d + this._d) | 0 - this._e = (e + this._e) | 0 -} + // Are we oob? + if (end > this.length) end = this.length + if (target.length - targetStart < end - start) { + end = target.length - targetStart + start + } -Sha.prototype._hash = function () { - var H = Buffer.allocUnsafe(20) + var len = end - start - H.writeInt32BE(this._a | 0, 0) - H.writeInt32BE(this._b | 0, 4) - H.writeInt32BE(this._c | 0, 8) - H.writeInt32BE(this._d | 0, 12) - H.writeInt32BE(this._e | 0, 16) + if (this === target && typeof Uint8Array.prototype.copyWithin === 'function') { + // Use built-in when available, missing from IE11 + this.copyWithin(targetStart, start, end) + } else if (this === target && start < targetStart && targetStart < end) { + // descending copy from end + for (var i = len - 1; i >= 0; --i) { + target[i + targetStart] = this[i + start] + } + } else { + Uint8Array.prototype.set.call( + target, + this.subarray(start, end), + targetStart + ) + } - return H + return len } -module.exports = Sha +// Usage: +// buffer.fill(number[, offset[, end]]) +// buffer.fill(buffer[, offset[, end]]) +// buffer.fill(string[, offset[, end]][, encoding]) +Buffer.prototype.fill = function fill (val, start, end, encoding) { + // Handle string cases: + if (typeof val === 'string') { + if (typeof start === 'string') { + encoding = start + start = 0 + end = this.length + } else if (typeof end === 'string') { + encoding = end + end = this.length + } + if (encoding !== undefined && typeof encoding !== 'string') { + throw new TypeError('encoding must be a string') + } + if (typeof encoding === 'string' && !Buffer.isEncoding(encoding)) { + throw new TypeError('Unknown encoding: ' + encoding) + } + if (val.length === 1) { + var code = val.charCodeAt(0) + if ((encoding === 'utf8' && code < 128) || + encoding === 'latin1') { + // Fast path: If `val` fits into a single byte, use that numeric value. + val = code + } + } + } else if (typeof val === 'number') { + val = val & 255 + } -},{"./hash":149,"inherits":104,"safe-buffer":148}],152:[function(require,module,exports){ -/* - * A JavaScript implementation of the Secure Hash Algorithm, SHA-1, as defined - * in FIPS PUB 180-1 - * Version 2.1a Copyright Paul Johnston 2000 - 2002. - * Other contributors: Greg Holt, Andrew Kepert, Ydnar, Lostinet - * Distributed under the BSD License - * See http://pajhome.org.uk/crypt/md5 for details. - */ + // Invalid ranges are not set to a default, so can range check early. + if (start < 0 || this.length < start || this.length < end) { + throw new RangeError('Out of range index') + } -var inherits = require('inherits') -var Hash = require('./hash') -var Buffer = require('safe-buffer').Buffer + if (end <= start) { + return this + } -var K = [ - 0x5a827999, 0x6ed9eba1, 0x8f1bbcdc | 0, 0xca62c1d6 | 0 -] + start = start >>> 0 + end = end === undefined ? this.length : end >>> 0 -var W = new Array(80) + if (!val) val = 0 -function Sha1 () { - this.init() - this._w = W + var i + if (typeof val === 'number') { + for (i = start; i < end; ++i) { + this[i] = val + } + } else { + var bytes = Buffer.isBuffer(val) + ? val + : Buffer.from(val, encoding) + var len = bytes.length + if (len === 0) { + throw new TypeError('The value "' + val + + '" is invalid for argument "value"') + } + for (i = 0; i < end - start; ++i) { + this[i + start] = bytes[i % len] + } + } - Hash.call(this, 64, 56) + return this } -inherits(Sha1, Hash) +// HELPER FUNCTIONS +// ================ -Sha1.prototype.init = function () { - this._a = 0x67452301 - this._b = 0xefcdab89 - this._c = 0x98badcfe - this._d = 0x10325476 - this._e = 0xc3d2e1f0 +var INVALID_BASE64_RE = /[^+/0-9A-Za-z-_]/g - return this +function base64clean (str) { + // Node takes equal signs as end of the Base64 encoding + str = str.split('=')[0] + // Node strips out invalid characters like \n and \t from the string, base64-js does not + str = str.trim().replace(INVALID_BASE64_RE, '') + // Node converts strings with length < 2 to '' + if (str.length < 2) return '' + // Node allows for non-padded base64 strings (missing trailing ===), base64-js does not + while (str.length % 4 !== 0) { + str = str + '=' + } + return str } -function rotl1 (num) { - return (num << 1) | (num >>> 31) +function toHex (n) { + if (n < 16) return '0' + n.toString(16) + return n.toString(16) } -function rotl5 (num) { - return (num << 5) | (num >>> 27) -} +function utf8ToBytes (string, units) { + units = units || Infinity + var codePoint + var length = string.length + var leadSurrogate = null + var bytes = [] -function rotl30 (num) { - return (num << 30) | (num >>> 2) -} + for (var i = 0; i < length; ++i) { + codePoint = string.charCodeAt(i) -function ft (s, b, c, d) { - if (s === 0) return (b & c) | ((~b) & d) - if (s === 2) return (b & c) | (b & d) | (c & d) - return b ^ c ^ d -} + // is surrogate component + if (codePoint > 0xD7FF && codePoint < 0xE000) { + // last char was a lead + if (!leadSurrogate) { + // no lead yet + if (codePoint > 0xDBFF) { + // unexpected trail + if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD) + continue + } else if (i + 1 === length) { + // unpaired lead + if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD) + continue + } -Sha1.prototype._update = function (M) { - var W = this._w + // valid lead + leadSurrogate = codePoint - var a = this._a | 0 - var b = this._b | 0 - var c = this._c | 0 - var d = this._d | 0 - var e = this._e | 0 + continue + } - for (var i = 0; i < 16; ++i) W[i] = M.readInt32BE(i * 4) - for (; i < 80; ++i) W[i] = rotl1(W[i - 3] ^ W[i - 8] ^ W[i - 14] ^ W[i - 16]) + // 2 leads in a row + if (codePoint < 0xDC00) { + if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD) + leadSurrogate = codePoint + continue + } - for (var j = 0; j < 80; ++j) { - var s = ~~(j / 20) - var t = (rotl5(a) + ft(s, b, c, d) + e + W[j] + K[s]) | 0 + // valid surrogate pair + codePoint = (leadSurrogate - 0xD800 << 10 | codePoint - 0xDC00) + 0x10000 + } else if (leadSurrogate) { + // valid bmp char, but last char was a lead + if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD) + } - e = d - d = c - c = rotl30(b) - b = a - a = t + leadSurrogate = null + + // encode utf8 + if (codePoint < 0x80) { + if ((units -= 1) < 0) break + bytes.push(codePoint) + } else if (codePoint < 0x800) { + if ((units -= 2) < 0) break + bytes.push( + codePoint >> 0x6 | 0xC0, + codePoint & 0x3F | 0x80 + ) + } else if (codePoint < 0x10000) { + if ((units -= 3) < 0) break + bytes.push( + codePoint >> 0xC | 0xE0, + codePoint >> 0x6 & 0x3F | 0x80, + codePoint & 0x3F | 0x80 + ) + } else if (codePoint < 0x110000) { + if ((units -= 4) < 0) break + bytes.push( + codePoint >> 0x12 | 0xF0, + codePoint >> 0xC & 0x3F | 0x80, + codePoint >> 0x6 & 0x3F | 0x80, + codePoint & 0x3F | 0x80 + ) + } else { + throw new Error('Invalid code point') + } } - this._a = (a + this._a) | 0 - this._b = (b + this._b) | 0 - this._c = (c + this._c) | 0 - this._d = (d + this._d) | 0 - this._e = (e + this._e) | 0 + return bytes } -Sha1.prototype._hash = function () { - var H = Buffer.allocUnsafe(20) - - H.writeInt32BE(this._a | 0, 0) - H.writeInt32BE(this._b | 0, 4) - H.writeInt32BE(this._c | 0, 8) - H.writeInt32BE(this._d | 0, 12) - H.writeInt32BE(this._e | 0, 16) - - return H +function asciiToBytes (str) { + var byteArray = [] + for (var i = 0; i < str.length; ++i) { + // Node's code seems to be doing this and not & 0x7F.. + byteArray.push(str.charCodeAt(i) & 0xFF) + } + return byteArray } -module.exports = Sha1 - -},{"./hash":149,"inherits":104,"safe-buffer":148}],153:[function(require,module,exports){ -/** - * A JavaScript implementation of the Secure Hash Algorithm, SHA-256, as defined - * in FIPS 180-2 - * Version 2.2-beta Copyright Angel Marin, Paul Johnston 2000 - 2009. - * Other contributors: Greg Holt, Andrew Kepert, Ydnar, Lostinet - * - */ - -var inherits = require('inherits') -var Sha256 = require('./sha256') -var Hash = require('./hash') -var Buffer = require('safe-buffer').Buffer +function utf16leToBytes (str, units) { + var c, hi, lo + var byteArray = [] + for (var i = 0; i < str.length; ++i) { + if ((units -= 2) < 0) break -var W = new Array(64) + c = str.charCodeAt(i) + hi = c >> 8 + lo = c % 256 + byteArray.push(lo) + byteArray.push(hi) + } -function Sha224 () { - this.init() + return byteArray +} - this._w = W // new Array(64) +function base64ToBytes (str) { + return base64.toByteArray(base64clean(str)) +} - Hash.call(this, 64, 56) +function blitBuffer (src, dst, offset, length) { + for (var i = 0; i < length; ++i) { + if ((i + offset >= dst.length) || (i >= src.length)) break + dst[i + offset] = src[i] + } + return i } -inherits(Sha224, Sha256) +// ArrayBuffer or Uint8Array objects from other contexts (i.e. iframes) do not pass +// the `instanceof` check but they should be treated as of that type. +// See: https://github.com/feross/buffer/issues/166 +function isInstance (obj, type) { + return obj instanceof type || + (obj != null && obj.constructor != null && obj.constructor.name != null && + obj.constructor.name === type.name) +} +function numberIsNaN (obj) { + // For IE11 support + return obj !== obj // eslint-disable-line no-self-compare +} -Sha224.prototype.init = function () { - this._a = 0xc1059ed8 - this._b = 0x367cd507 - this._c = 0x3070dd17 - this._d = 0xf70e5939 - this._e = 0xffc00b31 - this._f = 0x68581511 - this._g = 0x64f98fa7 - this._h = 0xbefa4fa4 +}).call(this,require("buffer").Buffer) +},{"base64-js":65,"buffer":100,"ieee754":152}],101:[function(require,module,exports){ +var Buffer = require('safe-buffer').Buffer +var Transform = require('stream').Transform +var StringDecoder = require('string_decoder').StringDecoder +var inherits = require('inherits') - return this +function CipherBase (hashMode) { + Transform.call(this) + this.hashMode = typeof hashMode === 'string' + if (this.hashMode) { + this[hashMode] = this._finalOrDigest + } else { + this.final = this._finalOrDigest + } + if (this._final) { + this.__final = this._final + this._final = null + } + this._decoder = null + this._encoding = null } +inherits(CipherBase, Transform) -Sha224.prototype._hash = function () { - var H = Buffer.allocUnsafe(28) +CipherBase.prototype.update = function (data, inputEnc, outputEnc) { + if (typeof data === 'string') { + data = Buffer.from(data, inputEnc) + } - H.writeInt32BE(this._a, 0) - H.writeInt32BE(this._b, 4) - H.writeInt32BE(this._c, 8) - H.writeInt32BE(this._d, 12) - H.writeInt32BE(this._e, 16) - H.writeInt32BE(this._f, 20) - H.writeInt32BE(this._g, 24) + var outData = this._update(data) + if (this.hashMode) return this - return H + if (outputEnc) { + outData = this._toString(outData, outputEnc) + } + + return outData } -module.exports = Sha224 +CipherBase.prototype.setAutoPadding = function () {} +CipherBase.prototype.getAuthTag = function () { + throw new Error('trying to get auth tag in unsupported state') +} -},{"./hash":149,"./sha256":154,"inherits":104,"safe-buffer":148}],154:[function(require,module,exports){ -/** - * A JavaScript implementation of the Secure Hash Algorithm, SHA-256, as defined - * in FIPS 180-2 - * Version 2.2-beta Copyright Angel Marin, Paul Johnston 2000 - 2009. - * Other contributors: Greg Holt, Andrew Kepert, Ydnar, Lostinet - * - */ +CipherBase.prototype.setAuthTag = function () { + throw new Error('trying to set auth tag in unsupported state') +} -var inherits = require('inherits') -var Hash = require('./hash') -var Buffer = require('safe-buffer').Buffer +CipherBase.prototype.setAAD = function () { + throw new Error('trying to set aad in unsupported state') +} -var K = [ - 0x428A2F98, 0x71374491, 0xB5C0FBCF, 0xE9B5DBA5, - 0x3956C25B, 0x59F111F1, 0x923F82A4, 0xAB1C5ED5, - 0xD807AA98, 0x12835B01, 0x243185BE, 0x550C7DC3, - 0x72BE5D74, 0x80DEB1FE, 0x9BDC06A7, 0xC19BF174, - 0xE49B69C1, 0xEFBE4786, 0x0FC19DC6, 0x240CA1CC, - 0x2DE92C6F, 0x4A7484AA, 0x5CB0A9DC, 0x76F988DA, - 0x983E5152, 0xA831C66D, 0xB00327C8, 0xBF597FC7, - 0xC6E00BF3, 0xD5A79147, 0x06CA6351, 0x14292967, - 0x27B70A85, 0x2E1B2138, 0x4D2C6DFC, 0x53380D13, - 0x650A7354, 0x766A0ABB, 0x81C2C92E, 0x92722C85, - 0xA2BFE8A1, 0xA81A664B, 0xC24B8B70, 0xC76C51A3, - 0xD192E819, 0xD6990624, 0xF40E3585, 0x106AA070, - 0x19A4C116, 0x1E376C08, 0x2748774C, 0x34B0BCB5, - 0x391C0CB3, 0x4ED8AA4A, 0x5B9CCA4F, 0x682E6FF3, - 0x748F82EE, 0x78A5636F, 0x84C87814, 0x8CC70208, - 0x90BEFFFA, 0xA4506CEB, 0xBEF9A3F7, 0xC67178F2 -] +CipherBase.prototype._transform = function (data, _, next) { + var err + try { + if (this.hashMode) { + this._update(data) + } else { + this.push(this._update(data)) + } + } catch (e) { + err = e + } finally { + next(err) + } +} +CipherBase.prototype._flush = function (done) { + var err + try { + this.push(this.__final()) + } catch (e) { + err = e + } -var W = new Array(64) + done(err) +} +CipherBase.prototype._finalOrDigest = function (outputEnc) { + var outData = this.__final() || Buffer.alloc(0) + if (outputEnc) { + outData = this._toString(outData, outputEnc, true) + } + return outData +} -function Sha256 () { - this.init() +CipherBase.prototype._toString = function (value, enc, fin) { + if (!this._decoder) { + this._decoder = new StringDecoder(enc) + this._encoding = enc + } - this._w = W // new Array(64) + if (this._encoding !== enc) throw new Error('can\'t switch encodings') - Hash.call(this, 64, 56) + var out = this._decoder.write(value) + if (fin) { + out += this._decoder.end() + } + + return out } -inherits(Sha256, Hash) +module.exports = CipherBase -Sha256.prototype.init = function () { - this._a = 0x6a09e667 - this._b = 0xbb67ae85 - this._c = 0x3c6ef372 - this._d = 0xa54ff53a - this._e = 0x510e527f - this._f = 0x9b05688c - this._g = 0x1f83d9ab - this._h = 0x5be0cd19 +},{"inherits":153,"safe-buffer":199,"stream":208,"string_decoder":209}],102:[function(require,module,exports){ +(function (Buffer){ +// Copyright Joyent, Inc. and other Node contributors. +// +// Permission is hereby granted, free of charge, to any person obtaining a +// copy of this software and associated documentation files (the +// "Software"), to deal in the Software without restriction, including +// without limitation the rights to use, copy, modify, merge, publish, +// distribute, sublicense, and/or sell copies of the Software, and to permit +// persons to whom the Software is furnished to do so, subject to the +// following conditions: +// +// The above copyright notice and this permission notice shall be included +// in all copies or substantial portions of the Software. +// +// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS +// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF +// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN +// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, +// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR +// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE +// USE OR OTHER DEALINGS IN THE SOFTWARE. - return this +// NOTE: These type checking functions intentionally don't use `instanceof` +// because it is fragile and can be easily faked with `Object.create()`. + +function isArray(arg) { + if (Array.isArray) { + return Array.isArray(arg); + } + return objectToString(arg) === '[object Array]'; } +exports.isArray = isArray; -function ch (x, y, z) { - return z ^ (x & (y ^ z)) +function isBoolean(arg) { + return typeof arg === 'boolean'; } +exports.isBoolean = isBoolean; -function maj (x, y, z) { - return (x & y) | (z & (x | y)) +function isNull(arg) { + return arg === null; } +exports.isNull = isNull; -function sigma0 (x) { - return (x >>> 2 | x << 30) ^ (x >>> 13 | x << 19) ^ (x >>> 22 | x << 10) +function isNullOrUndefined(arg) { + return arg == null; } +exports.isNullOrUndefined = isNullOrUndefined; -function sigma1 (x) { - return (x >>> 6 | x << 26) ^ (x >>> 11 | x << 21) ^ (x >>> 25 | x << 7) +function isNumber(arg) { + return typeof arg === 'number'; } +exports.isNumber = isNumber; -function gamma0 (x) { - return (x >>> 7 | x << 25) ^ (x >>> 18 | x << 14) ^ (x >>> 3) +function isString(arg) { + return typeof arg === 'string'; } +exports.isString = isString; -function gamma1 (x) { - return (x >>> 17 | x << 15) ^ (x >>> 19 | x << 13) ^ (x >>> 10) +function isSymbol(arg) { + return typeof arg === 'symbol'; } +exports.isSymbol = isSymbol; -Sha256.prototype._update = function (M) { - var W = this._w +function isUndefined(arg) { + return arg === void 0; +} +exports.isUndefined = isUndefined; - var a = this._a | 0 - var b = this._b | 0 - var c = this._c | 0 - var d = this._d | 0 - var e = this._e | 0 - var f = this._f | 0 - var g = this._g | 0 - var h = this._h | 0 +function isRegExp(re) { + return objectToString(re) === '[object RegExp]'; +} +exports.isRegExp = isRegExp; - for (var i = 0; i < 16; ++i) W[i] = M.readInt32BE(i * 4) - for (; i < 64; ++i) W[i] = (gamma1(W[i - 2]) + W[i - 7] + gamma0(W[i - 15]) + W[i - 16]) | 0 +function isObject(arg) { + return typeof arg === 'object' && arg !== null; +} +exports.isObject = isObject; - for (var j = 0; j < 64; ++j) { - var T1 = (h + sigma1(e) + ch(e, f, g) + K[j] + W[j]) | 0 - var T2 = (sigma0(a) + maj(a, b, c)) | 0 +function isDate(d) { + return objectToString(d) === '[object Date]'; +} +exports.isDate = isDate; - h = g - g = f - f = e - e = (d + T1) | 0 - d = c - c = b - b = a - a = (T1 + T2) | 0 - } +function isError(e) { + return (objectToString(e) === '[object Error]' || e instanceof Error); +} +exports.isError = isError; - this._a = (a + this._a) | 0 - this._b = (b + this._b) | 0 - this._c = (c + this._c) | 0 - this._d = (d + this._d) | 0 - this._e = (e + this._e) | 0 - this._f = (f + this._f) | 0 - this._g = (g + this._g) | 0 - this._h = (h + this._h) | 0 +function isFunction(arg) { + return typeof arg === 'function'; } +exports.isFunction = isFunction; -Sha256.prototype._hash = function () { - var H = Buffer.allocUnsafe(32) +function isPrimitive(arg) { + return arg === null || + typeof arg === 'boolean' || + typeof arg === 'number' || + typeof arg === 'string' || + typeof arg === 'symbol' || // ES6 symbol + typeof arg === 'undefined'; +} +exports.isPrimitive = isPrimitive; - H.writeInt32BE(this._a, 0) - H.writeInt32BE(this._b, 4) - H.writeInt32BE(this._c, 8) - H.writeInt32BE(this._d, 12) - H.writeInt32BE(this._e, 16) - H.writeInt32BE(this._f, 20) - H.writeInt32BE(this._g, 24) - H.writeInt32BE(this._h, 28) +exports.isBuffer = Buffer.isBuffer; - return H +function objectToString(o) { + return Object.prototype.toString.call(o); } -module.exports = Sha256 +}).call(this,{"isBuffer":require("../../is-buffer/index.js")}) +},{"../../is-buffer/index.js":154}],103:[function(require,module,exports){ +(function (Buffer){ +var elliptic = require('elliptic') +var BN = require('bn.js') -},{"./hash":149,"inherits":104,"safe-buffer":148}],155:[function(require,module,exports){ -var inherits = require('inherits') -var SHA512 = require('./sha512') -var Hash = require('./hash') -var Buffer = require('safe-buffer').Buffer +module.exports = function createECDH (curve) { + return new ECDH(curve) +} -var W = new Array(160) +var aliases = { + secp256k1: { + name: 'secp256k1', + byteLength: 32 + }, + secp224r1: { + name: 'p224', + byteLength: 28 + }, + prime256v1: { + name: 'p256', + byteLength: 32 + }, + prime192v1: { + name: 'p192', + byteLength: 24 + }, + ed25519: { + name: 'ed25519', + byteLength: 32 + }, + secp384r1: { + name: 'p384', + byteLength: 48 + }, + secp521r1: { + name: 'p521', + byteLength: 66 + } +} -function Sha384 () { - this.init() - this._w = W +aliases.p224 = aliases.secp224r1 +aliases.p256 = aliases.secp256r1 = aliases.prime256v1 +aliases.p192 = aliases.secp192r1 = aliases.prime192v1 +aliases.p384 = aliases.secp384r1 +aliases.p521 = aliases.secp521r1 - Hash.call(this, 128, 112) +function ECDH (curve) { + this.curveType = aliases[curve] + if (!this.curveType) { + this.curveType = { + name: curve + } + } + this.curve = new elliptic.ec(this.curveType.name) // eslint-disable-line new-cap + this.keys = void 0 } -inherits(Sha384, SHA512) - -Sha384.prototype.init = function () { - this._ah = 0xcbbb9d5d - this._bh = 0x629a292a - this._ch = 0x9159015a - this._dh = 0x152fecd8 - this._eh = 0x67332667 - this._fh = 0x8eb44a87 - this._gh = 0xdb0c2e0d - this._hh = 0x47b5481d +ECDH.prototype.generateKeys = function (enc, format) { + this.keys = this.curve.genKeyPair() + return this.getPublicKey(enc, format) +} - this._al = 0xc1059ed8 - this._bl = 0x367cd507 - this._cl = 0x3070dd17 - this._dl = 0xf70e5939 - this._el = 0xffc00b31 - this._fl = 0x68581511 - this._gl = 0x64f98fa7 - this._hl = 0xbefa4fa4 +ECDH.prototype.computeSecret = function (other, inenc, enc) { + inenc = inenc || 'utf8' + if (!Buffer.isBuffer(other)) { + other = new Buffer(other, inenc) + } + var otherPub = this.curve.keyFromPublic(other).getPublic() + var out = otherPub.mul(this.keys.getPrivate()).getX() + return formatReturnValue(out, enc, this.curveType.byteLength) +} - return this +ECDH.prototype.getPublicKey = function (enc, format) { + var key = this.keys.getPublic(format === 'compressed', true) + if (format === 'hybrid') { + if (key[key.length - 1] % 2) { + key[0] = 7 + } else { + key[0] = 6 + } + } + return formatReturnValue(key, enc) } -Sha384.prototype._hash = function () { - var H = Buffer.allocUnsafe(48) +ECDH.prototype.getPrivateKey = function (enc) { + return formatReturnValue(this.keys.getPrivate(), enc) +} - function writeInt64BE (h, l, offset) { - H.writeInt32BE(h, offset) - H.writeInt32BE(l, offset + 4) +ECDH.prototype.setPublicKey = function (pub, enc) { + enc = enc || 'utf8' + if (!Buffer.isBuffer(pub)) { + pub = new Buffer(pub, enc) } + this.keys._importPublic(pub) + return this +} - writeInt64BE(this._ah, this._al, 0) - writeInt64BE(this._bh, this._bl, 8) - writeInt64BE(this._ch, this._cl, 16) - writeInt64BE(this._dh, this._dl, 24) - writeInt64BE(this._eh, this._el, 32) - writeInt64BE(this._fh, this._fl, 40) +ECDH.prototype.setPrivateKey = function (priv, enc) { + enc = enc || 'utf8' + if (!Buffer.isBuffer(priv)) { + priv = new Buffer(priv, enc) + } - return H + var _priv = new BN(priv) + _priv = _priv.toString(16) + this.keys = this.curve.genKeyPair() + this.keys._importPrivate(_priv) + return this } -module.exports = Sha384 +function formatReturnValue (bn, enc, len) { + if (!Array.isArray(bn)) { + bn = bn.toArray() + } + var buf = new Buffer(bn) + if (len && buf.length < len) { + var zeros = new Buffer(len - buf.length) + zeros.fill(0) + buf = Buffer.concat([zeros, buf]) + } + if (!enc) { + return buf + } else { + return buf.toString(enc) + } +} -},{"./hash":149,"./sha512":156,"inherits":104,"safe-buffer":148}],156:[function(require,module,exports){ +}).call(this,require("buffer").Buffer) +},{"bn.js":66,"buffer":100,"elliptic":119}],104:[function(require,module,exports){ +'use strict' var inherits = require('inherits') -var Hash = require('./hash') -var Buffer = require('safe-buffer').Buffer - -var K = [ - 0x428a2f98, 0xd728ae22, 0x71374491, 0x23ef65cd, - 0xb5c0fbcf, 0xec4d3b2f, 0xe9b5dba5, 0x8189dbbc, - 0x3956c25b, 0xf348b538, 0x59f111f1, 0xb605d019, - 0x923f82a4, 0xaf194f9b, 0xab1c5ed5, 0xda6d8118, - 0xd807aa98, 0xa3030242, 0x12835b01, 0x45706fbe, - 0x243185be, 0x4ee4b28c, 0x550c7dc3, 0xd5ffb4e2, - 0x72be5d74, 0xf27b896f, 0x80deb1fe, 0x3b1696b1, - 0x9bdc06a7, 0x25c71235, 0xc19bf174, 0xcf692694, - 0xe49b69c1, 0x9ef14ad2, 0xefbe4786, 0x384f25e3, - 0x0fc19dc6, 0x8b8cd5b5, 0x240ca1cc, 0x77ac9c65, - 0x2de92c6f, 0x592b0275, 0x4a7484aa, 0x6ea6e483, - 0x5cb0a9dc, 0xbd41fbd4, 0x76f988da, 0x831153b5, - 0x983e5152, 0xee66dfab, 0xa831c66d, 0x2db43210, - 0xb00327c8, 0x98fb213f, 0xbf597fc7, 0xbeef0ee4, - 0xc6e00bf3, 0x3da88fc2, 0xd5a79147, 0x930aa725, - 0x06ca6351, 0xe003826f, 0x14292967, 0x0a0e6e70, - 0x27b70a85, 0x46d22ffc, 0x2e1b2138, 0x5c26c926, - 0x4d2c6dfc, 0x5ac42aed, 0x53380d13, 0x9d95b3df, - 0x650a7354, 0x8baf63de, 0x766a0abb, 0x3c77b2a8, - 0x81c2c92e, 0x47edaee6, 0x92722c85, 0x1482353b, - 0xa2bfe8a1, 0x4cf10364, 0xa81a664b, 0xbc423001, - 0xc24b8b70, 0xd0f89791, 0xc76c51a3, 0x0654be30, - 0xd192e819, 0xd6ef5218, 0xd6990624, 0x5565a910, - 0xf40e3585, 0x5771202a, 0x106aa070, 0x32bbd1b8, - 0x19a4c116, 0xb8d2d0c8, 0x1e376c08, 0x5141ab53, - 0x2748774c, 0xdf8eeb99, 0x34b0bcb5, 0xe19b48a8, - 0x391c0cb3, 0xc5c95a63, 0x4ed8aa4a, 0xe3418acb, - 0x5b9cca4f, 0x7763e373, 0x682e6ff3, 0xd6b2b8a3, - 0x748f82ee, 0x5defb2fc, 0x78a5636f, 0x43172f60, - 0x84c87814, 0xa1f0ab72, 0x8cc70208, 0x1a6439ec, - 0x90befffa, 0x23631e28, 0xa4506ceb, 0xde82bde9, - 0xbef9a3f7, 0xb2c67915, 0xc67178f2, 0xe372532b, - 0xca273ece, 0xea26619c, 0xd186b8c7, 0x21c0c207, - 0xeada7dd6, 0xcde0eb1e, 0xf57d4f7f, 0xee6ed178, - 0x06f067aa, 0x72176fba, 0x0a637dc5, 0xa2c898a6, - 0x113f9804, 0xbef90dae, 0x1b710b35, 0x131c471b, - 0x28db77f5, 0x23047d84, 0x32caab7b, 0x40c72493, - 0x3c9ebe0a, 0x15c9bebc, 0x431d67c4, 0x9c100d4c, - 0x4cc5d4be, 0xcb3e42b6, 0x597f299c, 0xfc657e2a, - 0x5fcb6fab, 0x3ad6faec, 0x6c44198c, 0x4a475817 -] - -var W = new Array(160) +var MD5 = require('md5.js') +var RIPEMD160 = require('ripemd160') +var sha = require('sha.js') +var Base = require('cipher-base') -function Sha512 () { - this.init() - this._w = W +function Hash (hash) { + Base.call(this, 'digest') - Hash.call(this, 128, 112) + this._hash = hash } -inherits(Sha512, Hash) - -Sha512.prototype.init = function () { - this._ah = 0x6a09e667 - this._bh = 0xbb67ae85 - this._ch = 0x3c6ef372 - this._dh = 0xa54ff53a - this._eh = 0x510e527f - this._fh = 0x9b05688c - this._gh = 0x1f83d9ab - this._hh = 0x5be0cd19 - - this._al = 0xf3bcc908 - this._bl = 0x84caa73b - this._cl = 0xfe94f82b - this._dl = 0x5f1d36f1 - this._el = 0xade682d1 - this._fl = 0x2b3e6c1f - this._gl = 0xfb41bd6b - this._hl = 0x137e2179 +inherits(Hash, Base) - return this +Hash.prototype._update = function (data) { + this._hash.update(data) } -function Ch (x, y, z) { - return z ^ (x & (y ^ z)) +Hash.prototype._final = function () { + return this._hash.digest() } -function maj (x, y, z) { - return (x & y) | (z & (x | y)) -} +module.exports = function createHash (alg) { + alg = alg.toLowerCase() + if (alg === 'md5') return new MD5() + if (alg === 'rmd160' || alg === 'ripemd160') return new RIPEMD160() -function sigma0 (x, xl) { - return (x >>> 28 | xl << 4) ^ (xl >>> 2 | x << 30) ^ (xl >>> 7 | x << 25) + return new Hash(sha(alg)) } -function sigma1 (x, xl) { - return (x >>> 14 | xl << 18) ^ (x >>> 18 | xl << 14) ^ (xl >>> 9 | x << 23) -} +},{"cipher-base":101,"inherits":153,"md5.js":157,"ripemd160":198,"sha.js":201}],105:[function(require,module,exports){ +var MD5 = require('md5.js') -function Gamma0 (x, xl) { - return (x >>> 1 | xl << 31) ^ (x >>> 8 | xl << 24) ^ (x >>> 7) +module.exports = function (buffer) { + return new MD5().update(buffer).digest() } -function Gamma0l (x, xl) { - return (x >>> 1 | xl << 31) ^ (x >>> 8 | xl << 24) ^ (x >>> 7 | xl << 25) -} +},{"md5.js":157}],106:[function(require,module,exports){ +'use strict' +var inherits = require('inherits') +var Legacy = require('./legacy') +var Base = require('cipher-base') +var Buffer = require('safe-buffer').Buffer +var md5 = require('create-hash/md5') +var RIPEMD160 = require('ripemd160') -function Gamma1 (x, xl) { - return (x >>> 19 | xl << 13) ^ (xl >>> 29 | x << 3) ^ (x >>> 6) -} +var sha = require('sha.js') -function Gamma1l (x, xl) { - return (x >>> 19 | xl << 13) ^ (xl >>> 29 | x << 3) ^ (x >>> 6 | xl << 26) -} +var ZEROS = Buffer.alloc(128) -function getCarry (a, b) { - return (a >>> 0) < (b >>> 0) ? 1 : 0 -} +function Hmac (alg, key) { + Base.call(this, 'digest') + if (typeof key === 'string') { + key = Buffer.from(key) + } -Sha512.prototype._update = function (M) { - var W = this._w + var blocksize = (alg === 'sha512' || alg === 'sha384') ? 128 : 64 - var ah = this._ah | 0 - var bh = this._bh | 0 - var ch = this._ch | 0 - var dh = this._dh | 0 - var eh = this._eh | 0 - var fh = this._fh | 0 - var gh = this._gh | 0 - var hh = this._hh | 0 + this._alg = alg + this._key = key + if (key.length > blocksize) { + var hash = alg === 'rmd160' ? new RIPEMD160() : sha(alg) + key = hash.update(key).digest() + } else if (key.length < blocksize) { + key = Buffer.concat([key, ZEROS], blocksize) + } - var al = this._al | 0 - var bl = this._bl | 0 - var cl = this._cl | 0 - var dl = this._dl | 0 - var el = this._el | 0 - var fl = this._fl | 0 - var gl = this._gl | 0 - var hl = this._hl | 0 + var ipad = this._ipad = Buffer.allocUnsafe(blocksize) + var opad = this._opad = Buffer.allocUnsafe(blocksize) - for (var i = 0; i < 32; i += 2) { - W[i] = M.readInt32BE(i * 4) - W[i + 1] = M.readInt32BE(i * 4 + 4) + for (var i = 0; i < blocksize; i++) { + ipad[i] = key[i] ^ 0x36 + opad[i] = key[i] ^ 0x5C } - for (; i < 160; i += 2) { - var xh = W[i - 15 * 2] - var xl = W[i - 15 * 2 + 1] - var gamma0 = Gamma0(xh, xl) - var gamma0l = Gamma0l(xl, xh) - - xh = W[i - 2 * 2] - xl = W[i - 2 * 2 + 1] - var gamma1 = Gamma1(xh, xl) - var gamma1l = Gamma1l(xl, xh) + this._hash = alg === 'rmd160' ? new RIPEMD160() : sha(alg) + this._hash.update(ipad) +} - // W[i] = gamma0 + W[i - 7] + gamma1 + W[i - 16] - var Wi7h = W[i - 7 * 2] - var Wi7l = W[i - 7 * 2 + 1] +inherits(Hmac, Base) - var Wi16h = W[i - 16 * 2] - var Wi16l = W[i - 16 * 2 + 1] +Hmac.prototype._update = function (data) { + this._hash.update(data) +} - var Wil = (gamma0l + Wi7l) | 0 - var Wih = (gamma0 + Wi7h + getCarry(Wil, gamma0l)) | 0 - Wil = (Wil + gamma1l) | 0 - Wih = (Wih + gamma1 + getCarry(Wil, gamma1l)) | 0 - Wil = (Wil + Wi16l) | 0 - Wih = (Wih + Wi16h + getCarry(Wil, Wi16l)) | 0 +Hmac.prototype._final = function () { + var h = this._hash.digest() + var hash = this._alg === 'rmd160' ? new RIPEMD160() : sha(this._alg) + return hash.update(this._opad).update(h).digest() +} - W[i] = Wih - W[i + 1] = Wil +module.exports = function createHmac (alg, key) { + alg = alg.toLowerCase() + if (alg === 'rmd160' || alg === 'ripemd160') { + return new Hmac('rmd160', key) } + if (alg === 'md5') { + return new Legacy(md5, key) + } + return new Hmac(alg, key) +} - for (var j = 0; j < 160; j += 2) { - Wih = W[j] - Wil = W[j + 1] +},{"./legacy":107,"cipher-base":101,"create-hash/md5":105,"inherits":153,"ripemd160":198,"safe-buffer":199,"sha.js":201}],107:[function(require,module,exports){ +'use strict' +var inherits = require('inherits') +var Buffer = require('safe-buffer').Buffer - var majh = maj(ah, bh, ch) - var majl = maj(al, bl, cl) +var Base = require('cipher-base') - var sigma0h = sigma0(ah, al) - var sigma0l = sigma0(al, ah) - var sigma1h = sigma1(eh, el) - var sigma1l = sigma1(el, eh) +var ZEROS = Buffer.alloc(128) +var blocksize = 64 - // t1 = h + sigma1 + ch + K[j] + W[j] - var Kih = K[j] - var Kil = K[j + 1] +function Hmac (alg, key) { + Base.call(this, 'digest') + if (typeof key === 'string') { + key = Buffer.from(key) + } - var chh = Ch(eh, fh, gh) - var chl = Ch(el, fl, gl) + this._alg = alg + this._key = key - var t1l = (hl + sigma1l) | 0 - var t1h = (hh + sigma1h + getCarry(t1l, hl)) | 0 - t1l = (t1l + chl) | 0 - t1h = (t1h + chh + getCarry(t1l, chl)) | 0 - t1l = (t1l + Kil) | 0 - t1h = (t1h + Kih + getCarry(t1l, Kil)) | 0 - t1l = (t1l + Wil) | 0 - t1h = (t1h + Wih + getCarry(t1l, Wil)) | 0 + if (key.length > blocksize) { + key = alg(key) + } else if (key.length < blocksize) { + key = Buffer.concat([key, ZEROS], blocksize) + } - // t2 = sigma0 + maj - var t2l = (sigma0l + majl) | 0 - var t2h = (sigma0h + majh + getCarry(t2l, sigma0l)) | 0 + var ipad = this._ipad = Buffer.allocUnsafe(blocksize) + var opad = this._opad = Buffer.allocUnsafe(blocksize) - hh = gh - hl = gl - gh = fh - gl = fl - fh = eh - fl = el - el = (dl + t1l) | 0 - eh = (dh + t1h + getCarry(el, dl)) | 0 - dh = ch - dl = cl - ch = bh - cl = bl - bh = ah - bl = al - al = (t1l + t2l) | 0 - ah = (t1h + t2h + getCarry(al, t1l)) | 0 + for (var i = 0; i < blocksize; i++) { + ipad[i] = key[i] ^ 0x36 + opad[i] = key[i] ^ 0x5C } - this._al = (this._al + al) | 0 - this._bl = (this._bl + bl) | 0 - this._cl = (this._cl + cl) | 0 - this._dl = (this._dl + dl) | 0 - this._el = (this._el + el) | 0 - this._fl = (this._fl + fl) | 0 - this._gl = (this._gl + gl) | 0 - this._hl = (this._hl + hl) | 0 + this._hash = [ipad] +} - this._ah = (this._ah + ah + getCarry(this._al, al)) | 0 - this._bh = (this._bh + bh + getCarry(this._bl, bl)) | 0 - this._ch = (this._ch + ch + getCarry(this._cl, cl)) | 0 - this._dh = (this._dh + dh + getCarry(this._dl, dl)) | 0 - this._eh = (this._eh + eh + getCarry(this._el, el)) | 0 - this._fh = (this._fh + fh + getCarry(this._fl, fl)) | 0 - this._gh = (this._gh + gh + getCarry(this._gl, gl)) | 0 - this._hh = (this._hh + hh + getCarry(this._hl, hl)) | 0 +inherits(Hmac, Base) + +Hmac.prototype._update = function (data) { + this._hash.push(data) } -Sha512.prototype._hash = function () { - var H = Buffer.allocUnsafe(64) +Hmac.prototype._final = function () { + var h = this._alg(Buffer.concat(this._hash)) + return this._alg(Buffer.concat([this._opad, h])) +} +module.exports = Hmac - function writeInt64BE (h, l, offset) { - H.writeInt32BE(h, offset) - H.writeInt32BE(l, offset + 4) - } +},{"cipher-base":101,"inherits":153,"safe-buffer":199}],108:[function(require,module,exports){ +'use strict' - writeInt64BE(this._ah, this._al, 0) - writeInt64BE(this._bh, this._bl, 8) - writeInt64BE(this._ch, this._cl, 16) - writeInt64BE(this._dh, this._dl, 24) - writeInt64BE(this._eh, this._el, 32) - writeInt64BE(this._fh, this._fl, 40) - writeInt64BE(this._gh, this._gl, 48) - writeInt64BE(this._hh, this._hl, 56) +exports.randomBytes = exports.rng = exports.pseudoRandomBytes = exports.prng = require('randombytes') +exports.createHash = exports.Hash = require('create-hash') +exports.createHmac = exports.Hmac = require('create-hmac') - return H +var algos = require('browserify-sign/algos') +var algoKeys = Object.keys(algos) +var hashes = ['sha1', 'sha224', 'sha256', 'sha384', 'sha512', 'md5', 'rmd160'].concat(algoKeys) +exports.getHashes = function () { + return hashes } -module.exports = Sha512 +var p = require('pbkdf2') +exports.pbkdf2 = p.pbkdf2 +exports.pbkdf2Sync = p.pbkdf2Sync -},{"./hash":149,"inherits":104,"safe-buffer":148}],157:[function(require,module,exports){ -// Copyright Joyent, Inc. and other Node contributors. -// -// Permission is hereby granted, free of charge, to any person obtaining a -// copy of this software and associated documentation files (the -// "Software"), to deal in the Software without restriction, including -// without limitation the rights to use, copy, modify, merge, publish, -// distribute, sublicense, and/or sell copies of the Software, and to permit -// persons to whom the Software is furnished to do so, subject to the -// following conditions: -// -// The above copyright notice and this permission notice shall be included -// in all copies or substantial portions of the Software. -// -// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS -// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF -// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN -// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, -// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR -// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE -// USE OR OTHER DEALINGS IN THE SOFTWARE. +var aes = require('browserify-cipher') -module.exports = Stream; +exports.Cipher = aes.Cipher +exports.createCipher = aes.createCipher +exports.Cipheriv = aes.Cipheriv +exports.createCipheriv = aes.createCipheriv +exports.Decipher = aes.Decipher +exports.createDecipher = aes.createDecipher +exports.Decipheriv = aes.Decipheriv +exports.createDecipheriv = aes.createDecipheriv +exports.getCiphers = aes.getCiphers +exports.listCiphers = aes.listCiphers -var EE = require('events').EventEmitter; -var inherits = require('inherits'); +var dh = require('diffie-hellman') -inherits(Stream, EE); -Stream.Readable = require('readable-stream/readable.js'); -Stream.Writable = require('readable-stream/writable.js'); -Stream.Duplex = require('readable-stream/duplex.js'); -Stream.Transform = require('readable-stream/transform.js'); -Stream.PassThrough = require('readable-stream/passthrough.js'); +exports.DiffieHellmanGroup = dh.DiffieHellmanGroup +exports.createDiffieHellmanGroup = dh.createDiffieHellmanGroup +exports.getDiffieHellman = dh.getDiffieHellman +exports.createDiffieHellman = dh.createDiffieHellman +exports.DiffieHellman = dh.DiffieHellman -// Backwards-compat with node 0.4.x -Stream.Stream = Stream; +var sign = require('browserify-sign') +exports.createSign = sign.createSign +exports.Sign = sign.Sign +exports.createVerify = sign.createVerify +exports.Verify = sign.Verify +exports.createECDH = require('create-ecdh') -// old-style streams. Note that the pipe method (the only relevant -// part of this class) is overridden in the Readable class. +var publicEncrypt = require('public-encrypt') -function Stream() { - EE.call(this); -} +exports.publicEncrypt = publicEncrypt.publicEncrypt +exports.privateEncrypt = publicEncrypt.privateEncrypt +exports.publicDecrypt = publicEncrypt.publicDecrypt +exports.privateDecrypt = publicEncrypt.privateDecrypt -Stream.prototype.pipe = function(dest, options) { - var source = this; +// the least I can do is make error messages for the rest of the node.js/crypto api. +// ;[ +// 'createCredentials' +// ].forEach(function (name) { +// exports[name] = function () { +// throw new Error([ +// 'sorry, ' + name + ' is not implemented yet', +// 'we accept pull requests', +// 'https://github.com/crypto-browserify/crypto-browserify' +// ].join('\n')) +// } +// }) - function ondata(chunk) { - if (dest.writable) { - if (false === dest.write(chunk) && source.pause) { - source.pause(); - } - } - } +var rf = require('randomfill') - source.on('data', ondata); +exports.randomFill = rf.randomFill +exports.randomFillSync = rf.randomFillSync - function ondrain() { - if (source.readable && source.resume) { - source.resume(); - } - } +exports.createCredentials = function () { + throw new Error([ + 'sorry, createCredentials is not implemented yet', + 'we accept pull requests', + 'https://github.com/crypto-browserify/crypto-browserify' + ].join('\n')) +} - dest.on('drain', ondrain); +exports.constants = { + 'DH_CHECK_P_NOT_SAFE_PRIME': 2, + 'DH_CHECK_P_NOT_PRIME': 1, + 'DH_UNABLE_TO_CHECK_GENERATOR': 4, + 'DH_NOT_SUITABLE_GENERATOR': 8, + 'NPN_ENABLED': 1, + 'ALPN_ENABLED': 1, + 'RSA_PKCS1_PADDING': 1, + 'RSA_SSLV23_PADDING': 2, + 'RSA_NO_PADDING': 3, + 'RSA_PKCS1_OAEP_PADDING': 4, + 'RSA_X931_PADDING': 5, + 'RSA_PKCS1_PSS_PADDING': 6, + 'POINT_CONVERSION_COMPRESSED': 2, + 'POINT_CONVERSION_UNCOMPRESSED': 4, + 'POINT_CONVERSION_HYBRID': 6 +} - // If the 'end' option is not supplied, dest.end() will be called when - // source gets the 'end' or 'close' events. Only dest.end() once. - if (!dest._isStdio && (!options || options.end !== false)) { - source.on('end', onend); - source.on('close', onclose); - } +},{"browserify-cipher":86,"browserify-sign":93,"browserify-sign/algos":90,"create-ecdh":103,"create-hash":104,"create-hmac":106,"diffie-hellman":115,"pbkdf2":166,"public-encrypt":173,"randombytes":182,"randomfill":183}],109:[function(require,module,exports){ +'use strict'; - var didOnEnd = false; - function onend() { - if (didOnEnd) return; - didOnEnd = true; +exports.utils = require('./des/utils'); +exports.Cipher = require('./des/cipher'); +exports.DES = require('./des/des'); +exports.CBC = require('./des/cbc'); +exports.EDE = require('./des/ede'); - dest.end(); - } +},{"./des/cbc":110,"./des/cipher":111,"./des/des":112,"./des/ede":113,"./des/utils":114}],110:[function(require,module,exports){ +'use strict'; +var assert = require('minimalistic-assert'); +var inherits = require('inherits'); - function onclose() { - if (didOnEnd) return; - didOnEnd = true; +var proto = {}; - if (typeof dest.destroy === 'function') dest.destroy(); +function CBCState(iv) { + assert.equal(iv.length, 8, 'Invalid IV length'); + + this.iv = new Array(8); + for (var i = 0; i < this.iv.length; i++) + this.iv[i] = iv[i]; +} + +function instantiate(Base) { + function CBC(options) { + Base.call(this, options); + this._cbcInit(); } + inherits(CBC, Base); - // don't leave dangling pipes when there are errors. - function onerror(er) { - cleanup(); - if (EE.listenerCount(this, 'error') === 0) { - throw er; // Unhandled stream error in pipe. - } + var keys = Object.keys(proto); + for (var i = 0; i < keys.length; i++) { + var key = keys[i]; + CBC.prototype[key] = proto[key]; } - source.on('error', onerror); - dest.on('error', onerror); + CBC.create = function create(options) { + return new CBC(options); + }; - // remove all the event listeners that were added. - function cleanup() { - source.removeListener('data', ondata); - dest.removeListener('drain', ondrain); + return CBC; +} - source.removeListener('end', onend); - source.removeListener('close', onclose); +exports.instantiate = instantiate; - source.removeListener('error', onerror); - dest.removeListener('error', onerror); +proto._cbcInit = function _cbcInit() { + var state = new CBCState(this.options.iv); + this._cbcState = state; +}; - source.removeListener('end', cleanup); - source.removeListener('close', cleanup); +proto._update = function _update(inp, inOff, out, outOff) { + var state = this._cbcState; + var superProto = this.constructor.super_.prototype; - dest.removeListener('close', cleanup); - } + var iv = state.iv; + if (this.type === 'encrypt') { + for (var i = 0; i < this.blockSize; i++) + iv[i] ^= inp[inOff + i]; - source.on('end', cleanup); - source.on('close', cleanup); + superProto._update.call(this, iv, 0, out, outOff); - dest.on('close', cleanup); + for (var i = 0; i < this.blockSize; i++) + iv[i] = out[outOff + i]; + } else { + superProto._update.call(this, inp, inOff, out, outOff); - dest.emit('pipe', source); + for (var i = 0; i < this.blockSize; i++) + out[outOff + i] ^= iv[i]; - // Allow for unix-like usage: A.pipe(B).pipe(C) - return dest; + for (var i = 0; i < this.blockSize; i++) + iv[i] = inp[inOff + i]; + } }; -},{"events":87,"inherits":104,"readable-stream/duplex.js":134,"readable-stream/passthrough.js":143,"readable-stream/readable.js":144,"readable-stream/transform.js":145,"readable-stream/writable.js":146}],158:[function(require,module,exports){ -// Copyright Joyent, Inc. and other Node contributors. -// -// Permission is hereby granted, free of charge, to any person obtaining a -// copy of this software and associated documentation files (the -// "Software"), to deal in the Software without restriction, including -// without limitation the rights to use, copy, modify, merge, publish, -// distribute, sublicense, and/or sell copies of the Software, and to permit -// persons to whom the Software is furnished to do so, subject to the -// following conditions: -// -// The above copyright notice and this permission notice shall be included -// in all copies or substantial portions of the Software. -// -// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS -// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF -// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN -// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, -// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR -// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE -// USE OR OTHER DEALINGS IN THE SOFTWARE. - +},{"inherits":153,"minimalistic-assert":159}],111:[function(require,module,exports){ 'use strict'; -/**/ +var assert = require('minimalistic-assert'); -var Buffer = require('safe-buffer').Buffer; -/**/ +function Cipher(options) { + this.options = options; -var isEncoding = Buffer.isEncoding || function (encoding) { - encoding = '' + encoding; - switch (encoding && encoding.toLowerCase()) { - case 'hex':case 'utf8':case 'utf-8':case 'ascii':case 'binary':case 'base64':case 'ucs2':case 'ucs-2':case 'utf16le':case 'utf-16le':case 'raw': - return true; - default: - return false; - } + this.type = this.options.type; + this.blockSize = 8; + this._init(); + + this.buffer = new Array(this.blockSize); + this.bufferOff = 0; +} +module.exports = Cipher; + +Cipher.prototype._init = function _init() { + // Might be overrided }; -function _normalizeEncoding(enc) { - if (!enc) return 'utf8'; - var retried; - while (true) { - switch (enc) { - case 'utf8': - case 'utf-8': - return 'utf8'; - case 'ucs2': - case 'ucs-2': - case 'utf16le': - case 'utf-16le': - return 'utf16le'; - case 'latin1': - case 'binary': - return 'latin1'; - case 'base64': - case 'ascii': - case 'hex': - return enc; - default: - if (retried) return; // undefined - enc = ('' + enc).toLowerCase(); - retried = true; - } - } +Cipher.prototype.update = function update(data) { + if (data.length === 0) + return []; + + if (this.type === 'decrypt') + return this._updateDecrypt(data); + else + return this._updateEncrypt(data); }; -// Do not cache `Buffer.isEncoding` when checking encoding names as some -// modules monkey-patch it to support additional encodings -function normalizeEncoding(enc) { - var nenc = _normalizeEncoding(enc); - if (typeof nenc !== 'string' && (Buffer.isEncoding === isEncoding || !isEncoding(enc))) throw new Error('Unknown encoding: ' + enc); - return nenc || enc; -} +Cipher.prototype._buffer = function _buffer(data, off) { + // Append data to buffer + var min = Math.min(this.buffer.length - this.bufferOff, data.length - off); + for (var i = 0; i < min; i++) + this.buffer[this.bufferOff + i] = data[off + i]; + this.bufferOff += min; -// StringDecoder provides an interface for efficiently splitting a series of -// buffers into a series of JS strings without breaking apart multi-byte -// characters. -exports.StringDecoder = StringDecoder; -function StringDecoder(encoding) { - this.encoding = normalizeEncoding(encoding); - var nb; - switch (this.encoding) { - case 'utf16le': - this.text = utf16Text; - this.end = utf16End; - nb = 4; - break; - case 'utf8': - this.fillLast = utf8FillLast; - nb = 4; - break; - case 'base64': - this.text = base64Text; - this.end = base64End; - nb = 3; - break; - default: - this.write = simpleWrite; - this.end = simpleEnd; - return; - } - this.lastNeed = 0; - this.lastTotal = 0; - this.lastChar = Buffer.allocUnsafe(nb); -} - -StringDecoder.prototype.write = function (buf) { - if (buf.length === 0) return ''; - var r; - var i; - if (this.lastNeed) { - r = this.fillLast(buf); - if (r === undefined) return ''; - i = this.lastNeed; - this.lastNeed = 0; - } else { - i = 0; - } - if (i < buf.length) return r ? r + this.text(buf, i) : this.text(buf, i); - return r || ''; + // Shift next + return min; }; -StringDecoder.prototype.end = utf8End; - -// Returns only complete characters in a Buffer -StringDecoder.prototype.text = utf8Text; - -// Attempts to complete a partial non-UTF-8 character using bytes from a Buffer -StringDecoder.prototype.fillLast = function (buf) { - if (this.lastNeed <= buf.length) { - buf.copy(this.lastChar, this.lastTotal - this.lastNeed, 0, this.lastNeed); - return this.lastChar.toString(this.encoding, 0, this.lastTotal); - } - buf.copy(this.lastChar, this.lastTotal - this.lastNeed, 0, buf.length); - this.lastNeed -= buf.length; +Cipher.prototype._flushBuffer = function _flushBuffer(out, off) { + this._update(this.buffer, 0, out, off); + this.bufferOff = 0; + return this.blockSize; }; -// Checks the type of a UTF-8 byte, whether it's ASCII, a leading byte, or a -// continuation byte. If an invalid byte is detected, -2 is returned. -function utf8CheckByte(byte) { - if (byte <= 0x7F) return 0;else if (byte >> 5 === 0x06) return 2;else if (byte >> 4 === 0x0E) return 3;else if (byte >> 3 === 0x1E) return 4; - return byte >> 6 === 0x02 ? -1 : -2; -} +Cipher.prototype._updateEncrypt = function _updateEncrypt(data) { + var inputOff = 0; + var outputOff = 0; -// Checks at most 3 bytes at the end of a Buffer in order to detect an -// incomplete multi-byte UTF-8 character. The total number of bytes (2, 3, or 4) -// needed to complete the UTF-8 character (if applicable) are returned. -function utf8CheckIncomplete(self, buf, i) { - var j = buf.length - 1; - if (j < i) return 0; - var nb = utf8CheckByte(buf[j]); - if (nb >= 0) { - if (nb > 0) self.lastNeed = nb - 1; - return nb; - } - if (--j < i || nb === -2) return 0; - nb = utf8CheckByte(buf[j]); - if (nb >= 0) { - if (nb > 0) self.lastNeed = nb - 2; - return nb; - } - if (--j < i || nb === -2) return 0; - nb = utf8CheckByte(buf[j]); - if (nb >= 0) { - if (nb > 0) { - if (nb === 2) nb = 0;else self.lastNeed = nb - 3; - } - return nb; - } - return 0; -} + var count = ((this.bufferOff + data.length) / this.blockSize) | 0; + var out = new Array(count * this.blockSize); -// Validates as many continuation bytes for a multi-byte UTF-8 character as -// needed or are available. If we see a non-continuation byte where we expect -// one, we "replace" the validated continuation bytes we've seen so far with -// a single UTF-8 replacement character ('\ufffd'), to match v8's UTF-8 decoding -// behavior. The continuation byte check is included three times in the case -// where all of the continuation bytes for a character exist in the same buffer. -// It is also done this way as a slight performance increase instead of using a -// loop. -function utf8CheckExtraBytes(self, buf, p) { - if ((buf[0] & 0xC0) !== 0x80) { - self.lastNeed = 0; - return '\ufffd'; - } - if (self.lastNeed > 1 && buf.length > 1) { - if ((buf[1] & 0xC0) !== 0x80) { - self.lastNeed = 1; - return '\ufffd'; - } - if (self.lastNeed > 2 && buf.length > 2) { - if ((buf[2] & 0xC0) !== 0x80) { - self.lastNeed = 2; - return '\ufffd'; - } - } + if (this.bufferOff !== 0) { + inputOff += this._buffer(data, inputOff); + + if (this.bufferOff === this.buffer.length) + outputOff += this._flushBuffer(out, outputOff); } -} -// Attempts to complete a multi-byte UTF-8 character using bytes from a Buffer. -function utf8FillLast(buf) { - var p = this.lastTotal - this.lastNeed; - var r = utf8CheckExtraBytes(this, buf, p); - if (r !== undefined) return r; - if (this.lastNeed <= buf.length) { - buf.copy(this.lastChar, p, 0, this.lastNeed); - return this.lastChar.toString(this.encoding, 0, this.lastTotal); + // Write blocks + var max = data.length - ((data.length - inputOff) % this.blockSize); + for (; inputOff < max; inputOff += this.blockSize) { + this._update(data, inputOff, out, outputOff); + outputOff += this.blockSize; } - buf.copy(this.lastChar, p, 0, buf.length); - this.lastNeed -= buf.length; -} -// Returns all complete UTF-8 characters in a Buffer. If the Buffer ended on a -// partial character, the character's bytes are buffered until the required -// number of bytes are available. -function utf8Text(buf, i) { - var total = utf8CheckIncomplete(this, buf, i); - if (!this.lastNeed) return buf.toString('utf8', i); - this.lastTotal = total; - var end = buf.length - (total - this.lastNeed); - buf.copy(this.lastChar, 0, end); - return buf.toString('utf8', i, end); -} + // Queue rest + for (; inputOff < data.length; inputOff++, this.bufferOff++) + this.buffer[this.bufferOff] = data[inputOff]; -// For UTF-8, a replacement character is added when ending on a partial -// character. -function utf8End(buf) { - var r = buf && buf.length ? this.write(buf) : ''; - if (this.lastNeed) return r + '\ufffd'; - return r; -} + return out; +}; -// UTF-16LE typically needs two bytes per character, but even if we have an even -// number of bytes available, we need to check if we end on a leading/high -// surrogate. In that case, we need to wait for the next two bytes in order to -// decode the last character properly. -function utf16Text(buf, i) { - if ((buf.length - i) % 2 === 0) { - var r = buf.toString('utf16le', i); - if (r) { - var c = r.charCodeAt(r.length - 1); - if (c >= 0xD800 && c <= 0xDBFF) { - this.lastNeed = 2; - this.lastTotal = 4; - this.lastChar[0] = buf[buf.length - 2]; - this.lastChar[1] = buf[buf.length - 1]; - return r.slice(0, -1); - } - } - return r; - } - this.lastNeed = 1; - this.lastTotal = 2; - this.lastChar[0] = buf[buf.length - 1]; - return buf.toString('utf16le', i, buf.length - 1); -} +Cipher.prototype._updateDecrypt = function _updateDecrypt(data) { + var inputOff = 0; + var outputOff = 0; -// For UTF-16LE we do not explicitly append special replacement characters if we -// end on a partial character, we simply let v8 handle that. -function utf16End(buf) { - var r = buf && buf.length ? this.write(buf) : ''; - if (this.lastNeed) { - var end = this.lastTotal - this.lastNeed; - return r + this.lastChar.toString('utf16le', 0, end); - } - return r; -} + var count = Math.ceil((this.bufferOff + data.length) / this.blockSize) - 1; + var out = new Array(count * this.blockSize); -function base64Text(buf, i) { - var n = (buf.length - i) % 3; - if (n === 0) return buf.toString('base64', i); - this.lastNeed = 3 - n; - this.lastTotal = 3; - if (n === 1) { - this.lastChar[0] = buf[buf.length - 1]; - } else { - this.lastChar[0] = buf[buf.length - 2]; - this.lastChar[1] = buf[buf.length - 1]; + // TODO(indutny): optimize it, this is far from optimal + for (; count > 0; count--) { + inputOff += this._buffer(data, inputOff); + outputOff += this._flushBuffer(out, outputOff); } - return buf.toString('base64', i, buf.length - n); -} -function base64End(buf) { - var r = buf && buf.length ? this.write(buf) : ''; - if (this.lastNeed) return r + this.lastChar.toString('base64', 0, 3 - this.lastNeed); - return r; -} + // Buffer rest of the input + inputOff += this._buffer(data, inputOff); -// Pass bytes on through for single-byte encodings (e.g. ascii, latin1, hex) -function simpleWrite(buf) { - return buf.toString(this.encoding); -} + return out; +}; -function simpleEnd(buf) { - return buf && buf.length ? this.write(buf) : ''; -} -},{"safe-buffer":148}],159:[function(require,module,exports){ -(function (setImmediate,clearImmediate){ -var nextTick = require('process/browser.js').nextTick; -var apply = Function.prototype.apply; -var slice = Array.prototype.slice; -var immediateIds = {}; -var nextImmediateId = 0; +Cipher.prototype.final = function final(buffer) { + var first; + if (buffer) + first = this.update(buffer); -// DOM APIs, for completeness + var last; + if (this.type === 'encrypt') + last = this._finalEncrypt(); + else + last = this._finalDecrypt(); -exports.setTimeout = function() { - return new Timeout(apply.call(setTimeout, window, arguments), clearTimeout); -}; -exports.setInterval = function() { - return new Timeout(apply.call(setInterval, window, arguments), clearInterval); + if (first) + return first.concat(last); + else + return last; }; -exports.clearTimeout = -exports.clearInterval = function(timeout) { timeout.close(); }; -function Timeout(id, clearFn) { - this._id = id; - this._clearFn = clearFn; -} -Timeout.prototype.unref = Timeout.prototype.ref = function() {}; -Timeout.prototype.close = function() { - this._clearFn.call(window, this._id); -}; +Cipher.prototype._pad = function _pad(buffer, off) { + if (off === 0) + return false; -// Does not start the time, just sets up the members needed. -exports.enroll = function(item, msecs) { - clearTimeout(item._idleTimeoutId); - item._idleTimeout = msecs; -}; + while (off < buffer.length) + buffer[off++] = 0; -exports.unenroll = function(item) { - clearTimeout(item._idleTimeoutId); - item._idleTimeout = -1; + return true; }; -exports._unrefActive = exports.active = function(item) { - clearTimeout(item._idleTimeoutId); +Cipher.prototype._finalEncrypt = function _finalEncrypt() { + if (!this._pad(this.buffer, this.bufferOff)) + return []; - var msecs = item._idleTimeout; - if (msecs >= 0) { - item._idleTimeoutId = setTimeout(function onTimeout() { - if (item._onTimeout) - item._onTimeout(); - }, msecs); - } + var out = new Array(this.blockSize); + this._update(this.buffer, 0, out, 0); + return out; }; -// That's not how node.js implements it but the exposed api is the same. -exports.setImmediate = typeof setImmediate === "function" ? setImmediate : function(fn) { - var id = nextImmediateId++; - var args = arguments.length < 2 ? false : slice.call(arguments, 1); - - immediateIds[id] = true; - - nextTick(function onNextTick() { - if (immediateIds[id]) { - // fn.call() is faster so we optimize for the common use-case - // @see http://jsperf.com/call-apply-segu - if (args) { - fn.apply(null, args); - } else { - fn.call(null); - } - // Prevent ids from leaking - exports.clearImmediate(id); - } - }); - - return id; +Cipher.prototype._unpad = function _unpad(buffer) { + return buffer; }; -exports.clearImmediate = typeof clearImmediate === "function" ? clearImmediate : function(id) { - delete immediateIds[id]; +Cipher.prototype._finalDecrypt = function _finalDecrypt() { + assert.equal(this.bufferOff, this.blockSize, 'Not enough data to decrypt'); + var out = new Array(this.blockSize); + this._flushBuffer(out, 0); + + return this._unpad(out); }; -}).call(this,require("timers").setImmediate,require("timers").clearImmediate) -},{"process/browser.js":122,"timers":159}],160:[function(require,module,exports){ -// Copyright Joyent, Inc. and other Node contributors. -// -// Permission is hereby granted, free of charge, to any person obtaining a -// copy of this software and associated documentation files (the -// "Software"), to deal in the Software without restriction, including -// without limitation the rights to use, copy, modify, merge, publish, -// distribute, sublicense, and/or sell copies of the Software, and to permit -// persons to whom the Software is furnished to do so, subject to the -// following conditions: -// -// The above copyright notice and this permission notice shall be included -// in all copies or substantial portions of the Software. -// -// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS -// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF -// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN -// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, -// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR -// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE -// USE OR OTHER DEALINGS IN THE SOFTWARE. +},{"minimalistic-assert":159}],112:[function(require,module,exports){ 'use strict'; -var punycode = require('punycode'); -var util = require('./util'); - -exports.parse = urlParse; -exports.resolve = urlResolve; -exports.resolveObject = urlResolveObject; -exports.format = urlFormat; +var assert = require('minimalistic-assert'); +var inherits = require('inherits'); -exports.Url = Url; +var des = require('../des'); +var utils = des.utils; +var Cipher = des.Cipher; -function Url() { - this.protocol = null; - this.slashes = null; - this.auth = null; - this.host = null; - this.port = null; - this.hostname = null; - this.hash = null; - this.search = null; - this.query = null; - this.pathname = null; - this.path = null; - this.href = null; +function DESState() { + this.tmp = new Array(2); + this.keys = null; } -// Reference: RFC 3986, RFC 1808, RFC 2396 +function DES(options) { + Cipher.call(this, options); -// define these here so at least they only have to be -// compiled once on the first module load. -var protocolPattern = /^([a-z0-9.+-]+:)/i, - portPattern = /:[0-9]*$/, + var state = new DESState(); + this._desState = state; - // Special case for a simple path URL - simplePathPattern = /^(\/\/?(?!\/)[^\?\s]*)(\?[^\s]*)?$/, + this.deriveKeys(state, options.key); +} +inherits(DES, Cipher); +module.exports = DES; - // RFC 2396: characters reserved for delimiting URLs. - // We actually just auto-escape these. - delims = ['<', '>', '"', '`', ' ', '\r', '\n', '\t'], +DES.create = function create(options) { + return new DES(options); +}; - // RFC 2396: characters not allowed for various reasons. - unwise = ['{', '}', '|', '\\', '^', '`'].concat(delims), +var shiftTable = [ + 1, 1, 2, 2, 2, 2, 2, 2, + 1, 2, 2, 2, 2, 2, 2, 1 +]; - // Allowed by RFCs, but cause of XSS attacks. Always escape these. - autoEscape = ['\''].concat(unwise), - // Characters that are never ever allowed in a hostname. - // Note that any invalid chars are also handled, but these - // are the ones that are *expected* to be seen, so we fast-path - // them. - nonHostChars = ['%', '/', '?', ';', '#'].concat(autoEscape), - hostEndingChars = ['/', '?', '#'], - hostnameMaxLen = 255, - hostnamePartPattern = /^[+a-z0-9A-Z_-]{0,63}$/, - hostnamePartStart = /^([+a-z0-9A-Z_-]{0,63})(.*)$/, - // protocols that can allow "unsafe" and "unwise" chars. - unsafeProtocol = { - 'javascript': true, - 'javascript:': true - }, - // protocols that never have a hostname. - hostlessProtocol = { - 'javascript': true, - 'javascript:': true - }, - // protocols that always contain a // bit. - slashedProtocol = { - 'http': true, - 'https': true, - 'ftp': true, - 'gopher': true, - 'file': true, - 'http:': true, - 'https:': true, - 'ftp:': true, - 'gopher:': true, - 'file:': true - }, - querystring = require('querystring'); +DES.prototype.deriveKeys = function deriveKeys(state, key) { + state.keys = new Array(16 * 2); -function urlParse(url, parseQueryString, slashesDenoteHost) { - if (url && util.isObject(url) && url instanceof Url) return url; + assert.equal(key.length, this.blockSize, 'Invalid key length'); - var u = new Url; - u.parse(url, parseQueryString, slashesDenoteHost); - return u; -} + var kL = utils.readUInt32BE(key, 0); + var kR = utils.readUInt32BE(key, 4); -Url.prototype.parse = function(url, parseQueryString, slashesDenoteHost) { - if (!util.isString(url)) { - throw new TypeError("Parameter 'url' must be a string, not " + typeof url); + utils.pc1(kL, kR, state.tmp, 0); + kL = state.tmp[0]; + kR = state.tmp[1]; + for (var i = 0; i < state.keys.length; i += 2) { + var shift = shiftTable[i >>> 1]; + kL = utils.r28shl(kL, shift); + kR = utils.r28shl(kR, shift); + utils.pc2(kL, kR, state.keys, i); } +}; - // Copy chrome, IE, opera backslash-handling behavior. - // Back slashes before the query string get converted to forward slashes - // See: https://code.google.com/p/chromium/issues/detail?id=25916 - var queryIndex = url.indexOf('?'), - splitter = - (queryIndex !== -1 && queryIndex < url.indexOf('#')) ? '?' : '#', - uSplit = url.split(splitter), - slashRegex = /\\/g; - uSplit[0] = uSplit[0].replace(slashRegex, '/'); - url = uSplit.join(splitter); +DES.prototype._update = function _update(inp, inOff, out, outOff) { + var state = this._desState; - var rest = url; + var l = utils.readUInt32BE(inp, inOff); + var r = utils.readUInt32BE(inp, inOff + 4); - // trim before proceeding. - // This is to support parse stuff like " http://foo.com \n" - rest = rest.trim(); + // Initial Permutation + utils.ip(l, r, state.tmp, 0); + l = state.tmp[0]; + r = state.tmp[1]; - if (!slashesDenoteHost && url.split('#').length === 1) { - // Try fast path regexp - var simplePath = simplePathPattern.exec(rest); - if (simplePath) { - this.path = rest; - this.href = rest; - this.pathname = simplePath[1]; - if (simplePath[2]) { - this.search = simplePath[2]; - if (parseQueryString) { - this.query = querystring.parse(this.search.substr(1)); - } else { - this.query = this.search.substr(1); - } - } else if (parseQueryString) { - this.search = ''; - this.query = {}; - } - return this; - } - } + if (this.type === 'encrypt') + this._encrypt(state, l, r, state.tmp, 0); + else + this._decrypt(state, l, r, state.tmp, 0); - var proto = protocolPattern.exec(rest); - if (proto) { - proto = proto[0]; - var lowerProto = proto.toLowerCase(); - this.protocol = lowerProto; - rest = rest.substr(proto.length); - } - - // figure out if it's got a host - // user@server is *always* interpreted as a hostname, and url - // resolution will treat //foo/bar as host=foo,path=bar because that's - // how the browser resolves relative URLs. - if (slashesDenoteHost || proto || rest.match(/^\/\/[^@\/]+@[^@\/]+/)) { - var slashes = rest.substr(0, 2) === '//'; - if (slashes && !(proto && hostlessProtocol[proto])) { - rest = rest.substr(2); - this.slashes = true; - } - } + l = state.tmp[0]; + r = state.tmp[1]; - if (!hostlessProtocol[proto] && - (slashes || (proto && !slashedProtocol[proto]))) { + utils.writeUInt32BE(out, l, outOff); + utils.writeUInt32BE(out, r, outOff + 4); +}; - // there's a hostname. - // the first instance of /, ?, ;, or # ends the host. - // - // If there is an @ in the hostname, then non-host chars *are* allowed - // to the left of the last @ sign, unless some host-ending character - // comes *before* the @-sign. - // URLs are obnoxious. - // - // ex: - // http://a@b@c/ => user:a@b host:c - // http://a@b?@c => user:a host:c path:/?@c +DES.prototype._pad = function _pad(buffer, off) { + var value = buffer.length - off; + for (var i = off; i < buffer.length; i++) + buffer[i] = value; - // v0.12 TODO(isaacs): This is not quite how Chrome does things. - // Review our test case against browsers more comprehensively. + return true; +}; - // find the first instance of any hostEndingChars - var hostEnd = -1; - for (var i = 0; i < hostEndingChars.length; i++) { - var hec = rest.indexOf(hostEndingChars[i]); - if (hec !== -1 && (hostEnd === -1 || hec < hostEnd)) - hostEnd = hec; - } +DES.prototype._unpad = function _unpad(buffer) { + var pad = buffer[buffer.length - 1]; + for (var i = buffer.length - pad; i < buffer.length; i++) + assert.equal(buffer[i], pad); - // at this point, either we have an explicit point where the - // auth portion cannot go past, or the last @ char is the decider. - var auth, atSign; - if (hostEnd === -1) { - // atSign can be anywhere. - atSign = rest.lastIndexOf('@'); - } else { - // atSign must be in auth portion. - // http://a@b/c@d => host:b auth:a path:/c@d - atSign = rest.lastIndexOf('@', hostEnd); - } + return buffer.slice(0, buffer.length - pad); +}; - // Now we have a portion which is definitely the auth. - // Pull that off. - if (atSign !== -1) { - auth = rest.slice(0, atSign); - rest = rest.slice(atSign + 1); - this.auth = decodeURIComponent(auth); - } +DES.prototype._encrypt = function _encrypt(state, lStart, rStart, out, off) { + var l = lStart; + var r = rStart; - // the host is the remaining to the left of the first non-host char - hostEnd = -1; - for (var i = 0; i < nonHostChars.length; i++) { - var hec = rest.indexOf(nonHostChars[i]); - if (hec !== -1 && (hostEnd === -1 || hec < hostEnd)) - hostEnd = hec; - } - // if we still have not hit it, then the entire thing is a host. - if (hostEnd === -1) - hostEnd = rest.length; + // Apply f() x16 times + for (var i = 0; i < state.keys.length; i += 2) { + var keyL = state.keys[i]; + var keyR = state.keys[i + 1]; - this.host = rest.slice(0, hostEnd); - rest = rest.slice(hostEnd); + // f(r, k) + utils.expand(r, state.tmp, 0); - // pull out port. - this.parseHost(); + keyL ^= state.tmp[0]; + keyR ^= state.tmp[1]; + var s = utils.substitute(keyL, keyR); + var f = utils.permute(s); - // we've indicated that there is a hostname, - // so even if it's empty, it has to be present. - this.hostname = this.hostname || ''; + var t = r; + r = (l ^ f) >>> 0; + l = t; + } - // if hostname begins with [ and ends with ] - // assume that it's an IPv6 address. - var ipv6Hostname = this.hostname[0] === '[' && - this.hostname[this.hostname.length - 1] === ']'; + // Reverse Initial Permutation + utils.rip(r, l, out, off); +}; - // validate a little. - if (!ipv6Hostname) { - var hostparts = this.hostname.split(/\./); - for (var i = 0, l = hostparts.length; i < l; i++) { - var part = hostparts[i]; - if (!part) continue; - if (!part.match(hostnamePartPattern)) { - var newpart = ''; - for (var j = 0, k = part.length; j < k; j++) { - if (part.charCodeAt(j) > 127) { - // we replace non-ASCII char with a temporary placeholder - // we need this to make sure size of hostname is not - // broken by replacing non-ASCII by nothing - newpart += 'x'; - } else { - newpart += part[j]; - } - } - // we test again with ASCII char only - if (!newpart.match(hostnamePartPattern)) { - var validParts = hostparts.slice(0, i); - var notHost = hostparts.slice(i + 1); - var bit = part.match(hostnamePartStart); - if (bit) { - validParts.push(bit[1]); - notHost.unshift(bit[2]); - } - if (notHost.length) { - rest = '/' + notHost.join('.') + rest; - } - this.hostname = validParts.join('.'); - break; - } - } - } - } +DES.prototype._decrypt = function _decrypt(state, lStart, rStart, out, off) { + var l = rStart; + var r = lStart; - if (this.hostname.length > hostnameMaxLen) { - this.hostname = ''; - } else { - // hostnames are always lower case. - this.hostname = this.hostname.toLowerCase(); - } + // Apply f() x16 times + for (var i = state.keys.length - 2; i >= 0; i -= 2) { + var keyL = state.keys[i]; + var keyR = state.keys[i + 1]; - if (!ipv6Hostname) { - // IDNA Support: Returns a punycoded representation of "domain". - // It only converts parts of the domain name that - // have non-ASCII characters, i.e. it doesn't matter if - // you call it with a domain that already is ASCII-only. - this.hostname = punycode.toASCII(this.hostname); - } + // f(r, k) + utils.expand(l, state.tmp, 0); - var p = this.port ? ':' + this.port : ''; - var h = this.hostname || ''; - this.host = h + p; - this.href += this.host; + keyL ^= state.tmp[0]; + keyR ^= state.tmp[1]; + var s = utils.substitute(keyL, keyR); + var f = utils.permute(s); - // strip [ and ] from the hostname - // the host field still retains them, though - if (ipv6Hostname) { - this.hostname = this.hostname.substr(1, this.hostname.length - 2); - if (rest[0] !== '/') { - rest = '/' + rest; - } - } + var t = l; + l = (r ^ f) >>> 0; + r = t; } - // now rest is set to the post-host stuff. - // chop off any delim chars. - if (!unsafeProtocol[lowerProto]) { - - // First, make 100% sure that any "autoEscape" chars get - // escaped, even if encodeURIComponent doesn't think they - // need to be. - for (var i = 0, l = autoEscape.length; i < l; i++) { - var ae = autoEscape[i]; - if (rest.indexOf(ae) === -1) - continue; - var esc = encodeURIComponent(ae); - if (esc === ae) { - esc = escape(ae); - } - rest = rest.split(ae).join(esc); - } - } + // Reverse Initial Permutation + utils.rip(l, r, out, off); +}; +},{"../des":109,"inherits":153,"minimalistic-assert":159}],113:[function(require,module,exports){ +'use strict'; - // chop off from the tail first. - var hash = rest.indexOf('#'); - if (hash !== -1) { - // got a fragment string. - this.hash = rest.substr(hash); - rest = rest.slice(0, hash); - } - var qm = rest.indexOf('?'); - if (qm !== -1) { - this.search = rest.substr(qm); - this.query = rest.substr(qm + 1); - if (parseQueryString) { - this.query = querystring.parse(this.query); - } - rest = rest.slice(0, qm); - } else if (parseQueryString) { - // no query string, but parseQueryString still requested - this.search = ''; - this.query = {}; - } - if (rest) this.pathname = rest; - if (slashedProtocol[lowerProto] && - this.hostname && !this.pathname) { - this.pathname = '/'; - } +var assert = require('minimalistic-assert'); +var inherits = require('inherits'); - //to support http.request - if (this.pathname || this.search) { - var p = this.pathname || ''; - var s = this.search || ''; - this.path = p + s; - } +var des = require('../des'); +var Cipher = des.Cipher; +var DES = des.DES; - // finally, reconstruct the href based on what has been validated. - this.href = this.format(); - return this; -}; +function EDEState(type, key) { + assert.equal(key.length, 24, 'Invalid key length'); -// format a parsed object into a url string -function urlFormat(obj) { - // ensure it's an object, and not a string url. - // If it's an obj, this is a no-op. - // this way, you can call url_format() on strings - // to clean up potentially wonky urls. - if (util.isString(obj)) obj = urlParse(obj); - if (!(obj instanceof Url)) return Url.prototype.format.call(obj); - return obj.format(); -} + var k1 = key.slice(0, 8); + var k2 = key.slice(8, 16); + var k3 = key.slice(16, 24); -Url.prototype.format = function() { - var auth = this.auth || ''; - if (auth) { - auth = encodeURIComponent(auth); - auth = auth.replace(/%3A/i, ':'); - auth += '@'; + if (type === 'encrypt') { + this.ciphers = [ + DES.create({ type: 'encrypt', key: k1 }), + DES.create({ type: 'decrypt', key: k2 }), + DES.create({ type: 'encrypt', key: k3 }) + ]; + } else { + this.ciphers = [ + DES.create({ type: 'decrypt', key: k3 }), + DES.create({ type: 'encrypt', key: k2 }), + DES.create({ type: 'decrypt', key: k1 }) + ]; } +} - var protocol = this.protocol || '', - pathname = this.pathname || '', - hash = this.hash || '', - host = false, - query = ''; +function EDE(options) { + Cipher.call(this, options); - if (this.host) { - host = auth + this.host; - } else if (this.hostname) { - host = auth + (this.hostname.indexOf(':') === -1 ? - this.hostname : - '[' + this.hostname + ']'); - if (this.port) { - host += ':' + this.port; - } - } + var state = new EDEState(this.type, this.options.key); + this._edeState = state; +} +inherits(EDE, Cipher); - if (this.query && - util.isObject(this.query) && - Object.keys(this.query).length) { - query = querystring.stringify(this.query); - } +module.exports = EDE; - var search = this.search || (query && ('?' + query)) || ''; +EDE.create = function create(options) { + return new EDE(options); +}; - if (protocol && protocol.substr(-1) !== ':') protocol += ':'; +EDE.prototype._update = function _update(inp, inOff, out, outOff) { + var state = this._edeState; - // only the slashedProtocols get the //. Not mailto:, xmpp:, etc. - // unless they had them to begin with. - if (this.slashes || - (!protocol || slashedProtocol[protocol]) && host !== false) { - host = '//' + (host || ''); - if (pathname && pathname.charAt(0) !== '/') pathname = '/' + pathname; - } else if (!host) { - host = ''; - } + state.ciphers[0]._update(inp, inOff, out, outOff); + state.ciphers[1]._update(out, outOff, out, outOff); + state.ciphers[2]._update(out, outOff, out, outOff); +}; - if (hash && hash.charAt(0) !== '#') hash = '#' + hash; - if (search && search.charAt(0) !== '?') search = '?' + search; +EDE.prototype._pad = DES.prototype._pad; +EDE.prototype._unpad = DES.prototype._unpad; - pathname = pathname.replace(/[?#]/g, function(match) { - return encodeURIComponent(match); - }); - search = search.replace('#', '%23'); +},{"../des":109,"inherits":153,"minimalistic-assert":159}],114:[function(require,module,exports){ +'use strict'; - return protocol + host + pathname + search + hash; +exports.readUInt32BE = function readUInt32BE(bytes, off) { + var res = (bytes[0 + off] << 24) | + (bytes[1 + off] << 16) | + (bytes[2 + off] << 8) | + bytes[3 + off]; + return res >>> 0; }; -function urlResolve(source, relative) { - return urlParse(source, false, true).resolve(relative); -} - -Url.prototype.resolve = function(relative) { - return this.resolveObject(urlParse(relative, false, true)).format(); +exports.writeUInt32BE = function writeUInt32BE(bytes, value, off) { + bytes[0 + off] = value >>> 24; + bytes[1 + off] = (value >>> 16) & 0xff; + bytes[2 + off] = (value >>> 8) & 0xff; + bytes[3 + off] = value & 0xff; }; -function urlResolveObject(source, relative) { - if (!source) return relative; - return urlParse(source, false, true).resolveObject(relative); -} +exports.ip = function ip(inL, inR, out, off) { + var outL = 0; + var outR = 0; -Url.prototype.resolveObject = function(relative) { - if (util.isString(relative)) { - var rel = new Url(); - rel.parse(relative, false, true); - relative = rel; + for (var i = 6; i >= 0; i -= 2) { + for (var j = 0; j <= 24; j += 8) { + outL <<= 1; + outL |= (inR >>> (j + i)) & 1; + } + for (var j = 0; j <= 24; j += 8) { + outL <<= 1; + outL |= (inL >>> (j + i)) & 1; + } } - var result = new Url(); - var tkeys = Object.keys(this); - for (var tk = 0; tk < tkeys.length; tk++) { - var tkey = tkeys[tk]; - result[tkey] = this[tkey]; + for (var i = 6; i >= 0; i -= 2) { + for (var j = 1; j <= 25; j += 8) { + outR <<= 1; + outR |= (inR >>> (j + i)) & 1; + } + for (var j = 1; j <= 25; j += 8) { + outR <<= 1; + outR |= (inL >>> (j + i)) & 1; + } } - // hash is always overridden, no matter what. - // even href="" will remove it. - result.hash = relative.hash; + out[off + 0] = outL >>> 0; + out[off + 1] = outR >>> 0; +}; - // if the relative url is empty, then there's nothing left to do here. - if (relative.href === '') { - result.href = result.format(); - return result; - } +exports.rip = function rip(inL, inR, out, off) { + var outL = 0; + var outR = 0; - // hrefs like //foo/bar always cut to the protocol. - if (relative.slashes && !relative.protocol) { - // take everything except the protocol from relative - var rkeys = Object.keys(relative); - for (var rk = 0; rk < rkeys.length; rk++) { - var rkey = rkeys[rk]; - if (rkey !== 'protocol') - result[rkey] = relative[rkey]; + for (var i = 0; i < 4; i++) { + for (var j = 24; j >= 0; j -= 8) { + outL <<= 1; + outL |= (inR >>> (j + i)) & 1; + outL <<= 1; + outL |= (inL >>> (j + i)) & 1; } - - //urlParse appends trailing / to urls like http://www.example.com - if (slashedProtocol[result.protocol] && - result.hostname && !result.pathname) { - result.path = result.pathname = '/'; + } + for (var i = 4; i < 8; i++) { + for (var j = 24; j >= 0; j -= 8) { + outR <<= 1; + outR |= (inR >>> (j + i)) & 1; + outR <<= 1; + outR |= (inL >>> (j + i)) & 1; } - - result.href = result.format(); - return result; } - if (relative.protocol && relative.protocol !== result.protocol) { - // if it's a known url protocol, then changing - // the protocol does weird things - // first, if it's not file:, then we MUST have a host, - // and if there was a path - // to begin with, then we MUST have a path. - // if it is file:, then the host is dropped, - // because that's known to be hostless. - // anything else is assumed to be absolute. - if (!slashedProtocol[relative.protocol]) { - var keys = Object.keys(relative); - for (var v = 0; v < keys.length; v++) { - var k = keys[v]; - result[k] = relative[k]; - } - result.href = result.format(); - return result; - } + out[off + 0] = outL >>> 0; + out[off + 1] = outR >>> 0; +}; - result.protocol = relative.protocol; - if (!relative.host && !hostlessProtocol[relative.protocol]) { - var relPath = (relative.pathname || '').split('/'); - while (relPath.length && !(relative.host = relPath.shift())); - if (!relative.host) relative.host = ''; - if (!relative.hostname) relative.hostname = ''; - if (relPath[0] !== '') relPath.unshift(''); - if (relPath.length < 2) relPath.unshift(''); - result.pathname = relPath.join('/'); - } else { - result.pathname = relative.pathname; +exports.pc1 = function pc1(inL, inR, out, off) { + var outL = 0; + var outR = 0; + + // 7, 15, 23, 31, 39, 47, 55, 63 + // 6, 14, 22, 30, 39, 47, 55, 63 + // 5, 13, 21, 29, 39, 47, 55, 63 + // 4, 12, 20, 28 + for (var i = 7; i >= 5; i--) { + for (var j = 0; j <= 24; j += 8) { + outL <<= 1; + outL |= (inR >> (j + i)) & 1; } - result.search = relative.search; - result.query = relative.query; - result.host = relative.host || ''; - result.auth = relative.auth; - result.hostname = relative.hostname || relative.host; - result.port = relative.port; - // to support http.request - if (result.pathname || result.search) { - var p = result.pathname || ''; - var s = result.search || ''; - result.path = p + s; + for (var j = 0; j <= 24; j += 8) { + outL <<= 1; + outL |= (inL >> (j + i)) & 1; } - result.slashes = result.slashes || relative.slashes; - result.href = result.format(); - return result; + } + for (var j = 0; j <= 24; j += 8) { + outL <<= 1; + outL |= (inR >> (j + i)) & 1; } - var isSourceAbs = (result.pathname && result.pathname.charAt(0) === '/'), - isRelAbs = ( - relative.host || - relative.pathname && relative.pathname.charAt(0) === '/' - ), - mustEndAbs = (isRelAbs || isSourceAbs || - (result.host && relative.pathname)), - removeAllDots = mustEndAbs, - srcPath = result.pathname && result.pathname.split('/') || [], - relPath = relative.pathname && relative.pathname.split('/') || [], - psychotic = result.protocol && !slashedProtocol[result.protocol]; - - // if the url is a non-slashed url, then relative - // links like ../.. should be able - // to crawl up to the hostname, as well. This is strange. - // result.protocol has already been set by now. - // Later on, put the first path part into the host field. - if (psychotic) { - result.hostname = ''; - result.port = null; - if (result.host) { - if (srcPath[0] === '') srcPath[0] = result.host; - else srcPath.unshift(result.host); + // 1, 9, 17, 25, 33, 41, 49, 57 + // 2, 10, 18, 26, 34, 42, 50, 58 + // 3, 11, 19, 27, 35, 43, 51, 59 + // 36, 44, 52, 60 + for (var i = 1; i <= 3; i++) { + for (var j = 0; j <= 24; j += 8) { + outR <<= 1; + outR |= (inR >> (j + i)) & 1; } - result.host = ''; - if (relative.protocol) { - relative.hostname = null; - relative.port = null; - if (relative.host) { - if (relPath[0] === '') relPath[0] = relative.host; - else relPath.unshift(relative.host); - } - relative.host = null; + for (var j = 0; j <= 24; j += 8) { + outR <<= 1; + outR |= (inL >> (j + i)) & 1; } - mustEndAbs = mustEndAbs && (relPath[0] === '' || srcPath[0] === ''); } - - if (isRelAbs) { - // it's absolute. - result.host = (relative.host || relative.host === '') ? - relative.host : result.host; - result.hostname = (relative.hostname || relative.hostname === '') ? - relative.hostname : result.hostname; - result.search = relative.search; - result.query = relative.query; - srcPath = relPath; - // fall through to the dot-handling below. - } else if (relPath.length) { - // it's relative - // throw away the existing file, and take the new path instead. - if (!srcPath) srcPath = []; - srcPath.pop(); - srcPath = srcPath.concat(relPath); - result.search = relative.search; - result.query = relative.query; - } else if (!util.isNullOrUndefined(relative.search)) { - // just pull out the search. - // like href='?foo'. - // Put this after the other two cases because it simplifies the booleans - if (psychotic) { - result.hostname = result.host = srcPath.shift(); - //occationaly the auth can get stuck only in host - //this especially happens in cases like - //url.resolveObject('mailto:local1@domain1', 'local2@domain2') - var authInHost = result.host && result.host.indexOf('@') > 0 ? - result.host.split('@') : false; - if (authInHost) { - result.auth = authInHost.shift(); - result.host = result.hostname = authInHost.shift(); - } - } - result.search = relative.search; - result.query = relative.query; - //to support http.request - if (!util.isNull(result.pathname) || !util.isNull(result.search)) { - result.path = (result.pathname ? result.pathname : '') + - (result.search ? result.search : ''); - } - result.href = result.format(); - return result; + for (var j = 0; j <= 24; j += 8) { + outR <<= 1; + outR |= (inL >> (j + i)) & 1; } - if (!srcPath.length) { - // no path at all. easy. - // we've already handled the other stuff above. - result.pathname = null; - //to support http.request - if (result.search) { - result.path = '/' + result.search; - } else { - result.path = null; - } - result.href = result.format(); - return result; - } + out[off + 0] = outL >>> 0; + out[off + 1] = outR >>> 0; +}; - // if a url ENDs in . or .., then it must get a trailing slash. - // however, if it ends in anything else non-slashy, - // then it must NOT get a trailing slash. - var last = srcPath.slice(-1)[0]; - var hasTrailingSlash = ( - (result.host || relative.host || srcPath.length > 1) && - (last === '.' || last === '..') || last === ''); +exports.r28shl = function r28shl(num, shift) { + return ((num << shift) & 0xfffffff) | (num >>> (28 - shift)); +}; - // strip single dots, resolve double dots to parent dir - // if the path tries to go above the root, `up` ends up > 0 - var up = 0; - for (var i = srcPath.length; i >= 0; i--) { - last = srcPath[i]; - if (last === '.') { - srcPath.splice(i, 1); - } else if (last === '..') { - srcPath.splice(i, 1); - up++; - } else if (up) { - srcPath.splice(i, 1); - up--; - } - } +var pc2table = [ + // inL => outL + 14, 11, 17, 4, 27, 23, 25, 0, + 13, 22, 7, 18, 5, 9, 16, 24, + 2, 20, 12, 21, 1, 8, 15, 26, - // if the path is allowed to go above the root, restore leading ..s - if (!mustEndAbs && !removeAllDots) { - for (; up--; up) { - srcPath.unshift('..'); - } - } + // inR => outR + 15, 4, 25, 19, 9, 1, 26, 16, + 5, 11, 23, 8, 12, 7, 17, 0, + 22, 3, 10, 14, 6, 20, 27, 24 +]; - if (mustEndAbs && srcPath[0] !== '' && - (!srcPath[0] || srcPath[0].charAt(0) !== '/')) { - srcPath.unshift(''); - } +exports.pc2 = function pc2(inL, inR, out, off) { + var outL = 0; + var outR = 0; - if (hasTrailingSlash && (srcPath.join('/').substr(-1) !== '/')) { - srcPath.push(''); + var len = pc2table.length >>> 1; + for (var i = 0; i < len; i++) { + outL <<= 1; + outL |= (inL >>> pc2table[i]) & 0x1; } - - var isAbsolute = srcPath[0] === '' || - (srcPath[0] && srcPath[0].charAt(0) === '/'); - - // put the host back - if (psychotic) { - result.hostname = result.host = isAbsolute ? '' : - srcPath.length ? srcPath.shift() : ''; - //occationaly the auth can get stuck only in host - //this especially happens in cases like - //url.resolveObject('mailto:local1@domain1', 'local2@domain2') - var authInHost = result.host && result.host.indexOf('@') > 0 ? - result.host.split('@') : false; - if (authInHost) { - result.auth = authInHost.shift(); - result.host = result.hostname = authInHost.shift(); - } + for (var i = len; i < pc2table.length; i++) { + outR <<= 1; + outR |= (inR >>> pc2table[i]) & 0x1; } - mustEndAbs = mustEndAbs || (result.host && srcPath.length); + out[off + 0] = outL >>> 0; + out[off + 1] = outR >>> 0; +}; - if (mustEndAbs && !isAbsolute) { - srcPath.unshift(''); - } +exports.expand = function expand(r, out, off) { + var outL = 0; + var outR = 0; - if (!srcPath.length) { - result.pathname = null; - result.path = null; - } else { - result.pathname = srcPath.join('/'); + outL = ((r & 1) << 5) | (r >>> 27); + for (var i = 23; i >= 15; i -= 4) { + outL <<= 6; + outL |= (r >>> i) & 0x3f; } - - //to support request.http - if (!util.isNull(result.pathname) || !util.isNull(result.search)) { - result.path = (result.pathname ? result.pathname : '') + - (result.search ? result.search : ''); + for (var i = 11; i >= 3; i -= 4) { + outR |= (r >>> i) & 0x3f; + outR <<= 6; } - result.auth = relative.auth || result.auth; - result.slashes = result.slashes || relative.slashes; - result.href = result.format(); - return result; -}; + outR |= ((r & 0x1f) << 1) | (r >>> 31); -Url.prototype.parseHost = function() { - var host = this.host; - var port = portPattern.exec(host); - if (port) { - port = port[0]; - if (port !== ':') { - this.port = port.substr(1); - } - host = host.substr(0, host.length - port.length); - } - if (host) this.hostname = host; + out[off + 0] = outL >>> 0; + out[off + 1] = outR >>> 0; }; -},{"./util":161,"punycode":50,"querystring":131}],161:[function(require,module,exports){ -'use strict'; - -module.exports = { - isString: function(arg) { - return typeof(arg) === 'string'; - }, - isObject: function(arg) { - return typeof(arg) === 'object' && arg !== null; - }, - isNull: function(arg) { - return arg === null; - }, - isNullOrUndefined: function(arg) { - return arg == null; - } -}; +var sTable = [ + 14, 0, 4, 15, 13, 7, 1, 4, 2, 14, 15, 2, 11, 13, 8, 1, + 3, 10, 10, 6, 6, 12, 12, 11, 5, 9, 9, 5, 0, 3, 7, 8, + 4, 15, 1, 12, 14, 8, 8, 2, 13, 4, 6, 9, 2, 1, 11, 7, + 15, 5, 12, 11, 9, 3, 7, 14, 3, 10, 10, 0, 5, 6, 0, 13, -},{}],162:[function(require,module,exports){ -(function (global){ + 15, 3, 1, 13, 8, 4, 14, 7, 6, 15, 11, 2, 3, 8, 4, 14, + 9, 12, 7, 0, 2, 1, 13, 10, 12, 6, 0, 9, 5, 11, 10, 5, + 0, 13, 14, 8, 7, 10, 11, 1, 10, 3, 4, 15, 13, 4, 1, 2, + 5, 11, 8, 6, 12, 7, 6, 12, 9, 0, 3, 5, 2, 14, 15, 9, -/** - * Module exports. - */ + 10, 13, 0, 7, 9, 0, 14, 9, 6, 3, 3, 4, 15, 6, 5, 10, + 1, 2, 13, 8, 12, 5, 7, 14, 11, 12, 4, 11, 2, 15, 8, 1, + 13, 1, 6, 10, 4, 13, 9, 0, 8, 6, 15, 9, 3, 8, 0, 7, + 11, 4, 1, 15, 2, 14, 12, 3, 5, 11, 10, 5, 14, 2, 7, 12, -module.exports = deprecate; + 7, 13, 13, 8, 14, 11, 3, 5, 0, 6, 6, 15, 9, 0, 10, 3, + 1, 4, 2, 7, 8, 2, 5, 12, 11, 1, 12, 10, 4, 14, 15, 9, + 10, 3, 6, 15, 9, 0, 0, 6, 12, 10, 11, 1, 7, 13, 13, 8, + 15, 9, 1, 4, 3, 5, 14, 11, 5, 12, 2, 7, 8, 2, 4, 14, -/** - * Mark that a method should not be used. - * Returns a modified function which warns once by default. - * - * If `localStorage.noDeprecation = true` is set, then it is a no-op. - * - * If `localStorage.throwDeprecation = true` is set, then deprecated functions - * will throw an Error when invoked. - * - * If `localStorage.traceDeprecation = true` is set, then deprecated functions - * will invoke `console.trace()` instead of `console.error()`. - * - * @param {Function} fn - the function to deprecate - * @param {String} msg - the string to print to the console when `fn` is invoked - * @returns {Function} a new "deprecated" version of `fn` - * @api public - */ + 2, 14, 12, 11, 4, 2, 1, 12, 7, 4, 10, 7, 11, 13, 6, 1, + 8, 5, 5, 0, 3, 15, 15, 10, 13, 3, 0, 9, 14, 8, 9, 6, + 4, 11, 2, 8, 1, 12, 11, 7, 10, 1, 13, 14, 7, 2, 8, 13, + 15, 6, 9, 15, 12, 0, 5, 9, 6, 10, 3, 4, 0, 5, 14, 3, -function deprecate (fn, msg) { - if (config('noDeprecation')) { - return fn; - } + 12, 10, 1, 15, 10, 4, 15, 2, 9, 7, 2, 12, 6, 9, 8, 5, + 0, 6, 13, 1, 3, 13, 4, 14, 14, 0, 7, 11, 5, 3, 11, 8, + 9, 4, 14, 3, 15, 2, 5, 12, 2, 9, 8, 5, 12, 15, 3, 10, + 7, 11, 0, 14, 4, 1, 10, 7, 1, 6, 13, 0, 11, 8, 6, 13, - var warned = false; - function deprecated() { - if (!warned) { - if (config('throwDeprecation')) { - throw new Error(msg); - } else if (config('traceDeprecation')) { - console.trace(msg); - } else { - console.warn(msg); - } - warned = true; - } - return fn.apply(this, arguments); - } + 4, 13, 11, 0, 2, 11, 14, 7, 15, 4, 0, 9, 8, 1, 13, 10, + 3, 14, 12, 3, 9, 5, 7, 12, 5, 2, 10, 15, 6, 8, 1, 6, + 1, 6, 4, 11, 11, 13, 13, 8, 12, 1, 3, 4, 7, 10, 14, 7, + 10, 9, 15, 5, 6, 0, 8, 15, 0, 14, 5, 2, 9, 3, 2, 12, - return deprecated; -} + 13, 1, 2, 15, 8, 13, 4, 8, 6, 10, 15, 3, 11, 7, 1, 4, + 10, 12, 9, 5, 3, 6, 14, 11, 5, 0, 0, 14, 12, 9, 7, 2, + 7, 2, 11, 1, 4, 14, 1, 7, 9, 4, 12, 10, 14, 8, 2, 13, + 0, 15, 6, 12, 10, 9, 13, 0, 15, 3, 3, 5, 5, 6, 8, 11 +]; -/** - * Checks `localStorage` for boolean values for the given `name`. - * - * @param {String} name - * @returns {Boolean} - * @api private - */ +exports.substitute = function substitute(inL, inR) { + var out = 0; + for (var i = 0; i < 4; i++) { + var b = (inL >>> (18 - i * 6)) & 0x3f; + var sb = sTable[i * 0x40 + b]; -function config (name) { - // accessing global.localStorage can trigger a DOMException in sandboxed iframes - try { - if (!global.localStorage) return false; - } catch (_) { - return false; + out <<= 4; + out |= sb; } - var val = global.localStorage[name]; - if (null == val) return false; - return String(val).toLowerCase() === 'true'; -} - -}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {}) -},{}],163:[function(require,module,exports){ -var indexOf = function (xs, item) { - if (xs.indexOf) return xs.indexOf(item); - else for (var i = 0; i < xs.length; i++) { - if (xs[i] === item) return i; - } - return -1; -}; -var Object_keys = function (obj) { - if (Object.keys) return Object.keys(obj) - else { - var res = []; - for (var key in obj) res.push(key) - return res; - } -}; + for (var i = 0; i < 4; i++) { + var b = (inR >>> (18 - i * 6)) & 0x3f; + var sb = sTable[4 * 0x40 + i * 0x40 + b]; -var forEach = function (xs, fn) { - if (xs.forEach) return xs.forEach(fn) - else for (var i = 0; i < xs.length; i++) { - fn(xs[i], i, xs); - } + out <<= 4; + out |= sb; + } + return out >>> 0; }; -var defineProp = (function() { - try { - Object.defineProperty({}, '_', {}); - return function(obj, name, value) { - Object.defineProperty(obj, name, { - writable: true, - enumerable: false, - configurable: true, - value: value - }) - }; - } catch(e) { - return function(obj, name, value) { - obj[name] = value; - }; - } -}()); +var permuteTable = [ + 16, 25, 12, 11, 3, 20, 4, 15, 31, 17, 9, 6, 27, 14, 1, 22, + 30, 24, 8, 18, 0, 5, 29, 23, 13, 19, 2, 26, 10, 21, 28, 7 +]; -var globals = ['Array', 'Boolean', 'Date', 'Error', 'EvalError', 'Function', -'Infinity', 'JSON', 'Math', 'NaN', 'Number', 'Object', 'RangeError', -'ReferenceError', 'RegExp', 'String', 'SyntaxError', 'TypeError', 'URIError', -'decodeURI', 'decodeURIComponent', 'encodeURI', 'encodeURIComponent', 'escape', -'eval', 'isFinite', 'isNaN', 'parseFloat', 'parseInt', 'undefined', 'unescape']; +exports.permute = function permute(num) { + var out = 0; + for (var i = 0; i < permuteTable.length; i++) { + out <<= 1; + out |= (num >>> permuteTable[i]) & 0x1; + } + return out >>> 0; +}; -function Context() {} -Context.prototype = {}; +exports.padSplit = function padSplit(num, size, group) { + var str = num.toString(2); + while (str.length < size) + str = '0' + str; -var Script = exports.Script = function NodeScript (code) { - if (!(this instanceof Script)) return new Script(code); - this.code = code; + var out = []; + for (var i = 0; i < size; i += group) + out.push(str.slice(i, i + group)); + return out.join(' '); }; -Script.prototype.runInContext = function (context) { - if (!(context instanceof Context)) { - throw new TypeError("needs a 'context' argument."); - } - - var iframe = document.createElement('iframe'); - if (!iframe.style) iframe.style = {}; - iframe.style.display = 'none'; - - document.body.appendChild(iframe); - - var win = iframe.contentWindow; - var wEval = win.eval, wExecScript = win.execScript; +},{}],115:[function(require,module,exports){ +(function (Buffer){ +var generatePrime = require('./lib/generatePrime') +var primes = require('./lib/primes.json') - if (!wEval && wExecScript) { - // win.eval() magically appears when this is called in IE: - wExecScript.call(win, 'null'); - wEval = win.eval; - } - - forEach(Object_keys(context), function (key) { - win[key] = context[key]; - }); - forEach(globals, function (key) { - if (context[key]) { - win[key] = context[key]; - } - }); - - var winKeys = Object_keys(win); +var DH = require('./lib/dh') - var res = wEval.call(win, this.code); - - forEach(Object_keys(win), function (key) { - // Avoid copying circular objects like `top` and `window` by only - // updating existing context properties or new properties in the `win` - // that was only introduced after the eval. - if (key in context || indexOf(winKeys, key) === -1) { - context[key] = win[key]; - } - }); +function getDiffieHellman (mod) { + var prime = new Buffer(primes[mod].prime, 'hex') + var gen = new Buffer(primes[mod].gen, 'hex') - forEach(globals, function (key) { - if (!(key in context)) { - defineProp(context, key, win[key]); - } - }); - - document.body.removeChild(iframe); - - return res; -}; + return new DH(prime, gen) +} -Script.prototype.runInThisContext = function () { - return eval(this.code); // maybe... -}; +var ENCODINGS = { + 'binary': true, 'hex': true, 'base64': true +} -Script.prototype.runInNewContext = function (context) { - var ctx = Script.createContext(context); - var res = this.runInContext(ctx); +function createDiffieHellman (prime, enc, generator, genc) { + if (Buffer.isBuffer(enc) || ENCODINGS[enc] === undefined) { + return createDiffieHellman(prime, 'binary', enc, generator) + } - if (context) { - forEach(Object_keys(ctx), function (key) { - context[key] = ctx[key]; - }); - } + enc = enc || 'binary' + genc = genc || 'binary' + generator = generator || new Buffer([2]) - return res; -}; + if (!Buffer.isBuffer(generator)) { + generator = new Buffer(generator, genc) + } -forEach(Object_keys(Script.prototype), function (name) { - exports[name] = Script[name] = function (code) { - var s = Script(code); - return s[name].apply(s, [].slice.call(arguments, 1)); - }; -}); + if (typeof prime === 'number') { + return new DH(generatePrime(prime, generator), generator, true) + } -exports.isContext = function (context) { - return context instanceof Context; -}; + if (!Buffer.isBuffer(prime)) { + prime = new Buffer(prime, enc) + } -exports.createScript = function (code) { - return exports.Script(code); -}; + return new DH(prime, generator, true) +} -exports.createContext = Script.createContext = function (context) { - var copy = new Context(); - if(typeof context === 'object') { - forEach(Object_keys(context), function (key) { - copy[key] = context[key]; - }); - } - return copy; -}; +exports.DiffieHellmanGroup = exports.createDiffieHellmanGroup = exports.getDiffieHellman = getDiffieHellman +exports.createDiffieHellman = exports.DiffieHellman = createDiffieHellman -},{}],164:[function(require,module,exports){ +}).call(this,require("buffer").Buffer) +},{"./lib/dh":116,"./lib/generatePrime":117,"./lib/primes.json":118,"buffer":100}],116:[function(require,module,exports){ (function (Buffer){ -'use strict'; - -var _ = require('lodash'); -var $ = require('./util/preconditions'); -var errors = require('./errors'); -var Base58Check = require('./encoding/base58check'); -var Networks = require('./networks'); -var Hash = require('./crypto/hash'); -var JSUtil = require('./util/js'); -var PublicKey = require('./publickey'); - -/** - * Instantiate an address from an address String or Buffer, a public key or script hash Buffer, - * or an instance of {@link PublicKey} or {@link Script}. - * - * This is an immutable class, and if the first parameter provided to this constructor is an - * `Address` instance, the same argument will be returned. - * - * An address has two key properties: `network` and `type`. The type is either - * `Address.PayToPublicKeyHash` (value is the `'pubkeyhash'` string) - * or `Address.PayToScriptHash` (the string `'scripthash'`). The network is an instance of {@link Network}. - * You can quickly check whether an address is of a given kind by using the methods - * `isPayToPublicKeyHash` and `isPayToScriptHash` - * - * @example - * ```javascript - * // validate that an input field is valid - * var error = Address.getValidationError(input, 'testnet'); - * if (!error) { - * var address = Address(input, 'testnet'); - * } else { - * // invalid network or checksum (typo?) - * var message = error.messsage; - * } - * - * // get an address from a public key - * var address = Address(publicKey, 'testnet').toString(); - * ``` - * - * @param {*} data - The encoded data in various formats - * @param {Network|String|number=} network - The network: 'livenet' or 'testnet' - * @param {string=} type - The type of address: 'script' or 'pubkey' - * @returns {Address} A new valid and frozen instance of an Address - * @constructor - */ -function Address(data, network, type) { - /* jshint maxcomplexity: 12 */ - /* jshint maxstatements: 20 */ +var BN = require('bn.js'); +var MillerRabin = require('miller-rabin'); +var millerRabin = new MillerRabin(); +var TWENTYFOUR = new BN(24); +var ELEVEN = new BN(11); +var TEN = new BN(10); +var THREE = new BN(3); +var SEVEN = new BN(7); +var primes = require('./generatePrime'); +var randomBytes = require('randombytes'); +module.exports = DH; - if (!(this instanceof Address)) { - return new Address(data, network, type); +function setPublicKey(pub, enc) { + enc = enc || 'utf8'; + if (!Buffer.isBuffer(pub)) { + pub = new Buffer(pub, enc); } + this._pub = new BN(pub); + return this; +} - if (_.isArray(data) && _.isNumber(network)) { - return Address.createMultisig(data, network, type); +function setPrivateKey(priv, enc) { + enc = enc || 'utf8'; + if (!Buffer.isBuffer(priv)) { + priv = new Buffer(priv, enc); } + this._priv = new BN(priv); + return this; +} - if (data instanceof Address) { - // Immutable instance - return data; +var primeCache = {}; +function checkPrime(prime, generator) { + var gen = generator.toString('hex'); + var hex = [gen, prime.toString(16)].join('_'); + if (hex in primeCache) { + return primeCache[hex]; } + var error = 0; - $.checkArgument(data, 'First argument is required, please include address data.', 'guide/address.html'); + if (prime.isEven() || + !primes.simpleSieve || + !primes.fermatTest(prime) || + !millerRabin.test(prime)) { + //not a prime so +1 + error += 1; - if (network && !Networks.get(network)) { - throw new TypeError('Second argument must be "livenet" or "testnet".'); + if (gen === '02' || gen === '05') { + // we'd be able to check the generator + // it would fail so +8 + error += 8; + } else { + //we wouldn't be able to test the generator + // so +4 + error += 4; + } + primeCache[hex] = error; + return error; } - - if (type && (type !== Address.PayToPublicKeyHash && type !== Address.PayToScriptHash)) { - throw new TypeError('Third argument must be "pubkeyhash" or "scripthash".'); + if (!millerRabin.test(prime.shrn(1))) { + //not a safe prime + error += 2; } - - var info = this._classifyArguments(data, network, type); - - // set defaults if not set - info.network = info.network || Networks.get(network) || Networks.defaultNetwork; - info.type = info.type || type || Address.PayToPublicKeyHash; - - JSUtil.defineImmutable(this, { - hashBuffer: info.hashBuffer, - network: info.network, - type: info.type - }); - - return this; + var rem; + switch (gen) { + case '02': + if (prime.mod(TWENTYFOUR).cmp(ELEVEN)) { + // unsuidable generator + error += 8; + } + break; + case '05': + rem = prime.mod(TEN); + if (rem.cmp(THREE) && rem.cmp(SEVEN)) { + // prime mod 10 needs to equal 3 or 7 + error += 8; + } + break; + default: + error += 4; + } + primeCache[hex] = error; + return error; } -/** - * Internal function used to split different kinds of arguments of the constructor - * @param {*} data - The encoded data in various formats - * @param {Network|String|number=} network - The network: 'livenet' or 'testnet' - * @param {string=} type - The type of address: 'script' or 'pubkey' - * @returns {Object} An "info" object with "type", "network", and "hashBuffer" - */ -Address.prototype._classifyArguments = function(data, network, type) { - /* jshint maxcomplexity: 10 */ - // transform and validate input data - if ((data instanceof Buffer || data instanceof Uint8Array) && data.length === 20) { - return Address._transformHash(data); - } else if ((data instanceof Buffer || data instanceof Uint8Array) && data.length === 21) { - return Address._transformBuffer(data, network, type); - } else if (data instanceof PublicKey) { - return Address._transformPublicKey(data); - } else if (data instanceof Script) { - return Address._transformScript(data, network); - } else if (typeof(data) === 'string') { - return Address._transformString(data, network, type); - } else if (_.isObject(data)) { - return Address._transformObject(data); +function DH(prime, generator, malleable) { + this.setGenerator(generator); + this.__prime = new BN(prime); + this._prime = BN.mont(this.__prime); + this._primeLen = prime.length; + this._pub = undefined; + this._priv = undefined; + this._primeCode = undefined; + if (malleable) { + this.setPublicKey = setPublicKey; + this.setPrivateKey = setPrivateKey; } else { - throw new TypeError('First argument is an unrecognized data format.'); + this._primeCode = 8; } -}; - -/** @static */ -Address.PayToPublicKeyHash = 'pubkeyhash'; -/** @static */ -Address.PayToScriptHash = 'scripthash'; - -/** - * @param {Buffer} hash - An instance of a hash Buffer - * @returns {Object} An object with keys: hashBuffer - * @private - */ -Address._transformHash = function(hash) { - var info = {}; - if (!(hash instanceof Buffer) && !(hash instanceof Uint8Array)) { - throw new TypeError('Address supplied is not a buffer.'); +} +Object.defineProperty(DH.prototype, 'verifyError', { + enumerable: true, + get: function () { + if (typeof this._primeCode !== 'number') { + this._primeCode = checkPrime(this.__prime, this.__gen); + } + return this._primeCode; } - if (hash.length !== 20) { - throw new TypeError('Address hashbuffers must be exactly 20 bytes.'); +}); +DH.prototype.generateKeys = function () { + if (!this._priv) { + this._priv = new BN(randomBytes(this._primeLen)); } - info.hashBuffer = hash; - return info; + this._pub = this._gen.toRed(this._prime).redPow(this._priv).fromRed(); + return this.getPublicKey(); }; -/** - * Deserializes an address serialized through `Address#toObject()` - * @param {Object} data - * @param {string} data.hash - the hash that this address encodes - * @param {string} data.type - either 'pubkeyhash' or 'scripthash' - * @param {Network=} data.network - the name of the network associated - * @return {Address} - */ -Address._transformObject = function(data) { - $.checkArgument(data.hash || data.hashBuffer, 'Must provide a `hash` or `hashBuffer` property'); - $.checkArgument(data.type, 'Must provide a `type` property'); - return { - hashBuffer: data.hash ? Buffer.from(data.hash, 'hex') : data.hashBuffer, - network: Networks.get(data.network) || Networks.defaultNetwork, - type: data.type - }; +DH.prototype.computeSecret = function (other) { + other = new BN(other); + other = other.toRed(this._prime); + var secret = other.redPow(this._priv).fromRed(); + var out = new Buffer(secret.toArray()); + var prime = this.getPrime(); + if (out.length < prime.length) { + var front = new Buffer(prime.length - out.length); + front.fill(0); + out = Buffer.concat([front, out]); + } + return out; }; -/** - * Internal function to discover the network and type based on the first data byte - * - * @param {Buffer} buffer - An instance of a hex encoded address Buffer - * @returns {Object} An object with keys: network and type - * @private - */ -Address._classifyFromVersion = function(buffer) { - var version = {}; +DH.prototype.getPublicKey = function getPublicKey(enc) { + return formatReturnValue(this._pub, enc); +}; - var pubkeyhashNetwork = Networks.get(buffer[0], 'pubkeyhash'); - var scripthashNetwork = Networks.get(buffer[0], 'scripthash'); +DH.prototype.getPrivateKey = function getPrivateKey(enc) { + return formatReturnValue(this._priv, enc); +}; - if (pubkeyhashNetwork) { - version.network = pubkeyhashNetwork; - version.type = Address.PayToPublicKeyHash; - } else if (scripthashNetwork) { - version.network = scripthashNetwork; - version.type = Address.PayToScriptHash; - } +DH.prototype.getPrime = function (enc) { + return formatReturnValue(this.__prime, enc); +}; - return version; +DH.prototype.getGenerator = function (enc) { + return formatReturnValue(this._gen, enc); }; -/** - * Internal function to transform a bitcoin address buffer - * - * @param {Buffer} buffer - An instance of a hex encoded address Buffer - * @param {string=} network - The network: 'livenet' or 'testnet' - * @param {string=} type - The type: 'pubkeyhash' or 'scripthash' - * @returns {Object} An object with keys: hashBuffer, network and type - * @private - */ -Address._transformBuffer = function(buffer, network, type) { - /* jshint maxcomplexity: 9 */ - var info = {}; - if (!(buffer instanceof Buffer) && !(buffer instanceof Uint8Array)) { - throw new TypeError('Address supplied is not a buffer.'); +DH.prototype.setGenerator = function (gen, enc) { + enc = enc || 'utf8'; + if (!Buffer.isBuffer(gen)) { + gen = new Buffer(gen, enc); } - if (buffer.length !== 1 + 20) { - throw new TypeError('Address buffers must be exactly 21 bytes.'); + this.__gen = gen; + this._gen = new BN(gen); + return this; +}; + +function formatReturnValue(bn, enc) { + var buf = new Buffer(bn.toArray()); + if (!enc) { + return buf; + } else { + return buf.toString(enc); } +} - var networkObj = Networks.get(network); - var bufferVersion = Address._classifyFromVersion(buffer); +}).call(this,require("buffer").Buffer) +},{"./generatePrime":117,"bn.js":66,"buffer":100,"miller-rabin":158,"randombytes":182}],117:[function(require,module,exports){ +var randomBytes = require('randombytes'); +module.exports = findPrime; +findPrime.simpleSieve = simpleSieve; +findPrime.fermatTest = fermatTest; +var BN = require('bn.js'); +var TWENTYFOUR = new BN(24); +var MillerRabin = require('miller-rabin'); +var millerRabin = new MillerRabin(); +var ONE = new BN(1); +var TWO = new BN(2); +var FIVE = new BN(5); +var SIXTEEN = new BN(16); +var EIGHT = new BN(8); +var TEN = new BN(10); +var THREE = new BN(3); +var SEVEN = new BN(7); +var ELEVEN = new BN(11); +var FOUR = new BN(4); +var TWELVE = new BN(12); +var primes = null; - if (network && !networkObj) { - throw new TypeError('Unknown network'); - } +function _getPrimes() { + if (primes !== null) + return primes; - if (!bufferVersion.network || (networkObj && networkObj !== bufferVersion.network)) { - throw new TypeError('Address has mismatched network type.'); - } + var limit = 0x100000; + var res = []; + res[0] = 2; + for (var i = 1, k = 3; k < limit; k += 2) { + var sqrt = Math.ceil(Math.sqrt(k)); + for (var j = 0; j < i && res[j] <= sqrt; j++) + if (k % res[j] === 0) + break; - if (!bufferVersion.type || (type && type !== bufferVersion.type)) { - throw new TypeError('Address has mismatched type.'); + if (i !== j && res[j] <= sqrt) + continue; + + res[i++] = k; } + primes = res; + return res; +} - info.hashBuffer = buffer.slice(1); - info.network = bufferVersion.network; - info.type = bufferVersion.type; - return info; -}; +function simpleSieve(p) { + var primes = _getPrimes(); -/** - * Internal function to transform a {@link PublicKey} - * - * @param {PublicKey} pubkey - An instance of PublicKey - * @returns {Object} An object with keys: hashBuffer, type - * @private - */ -Address._transformPublicKey = function(pubkey) { - var info = {}; - if (!(pubkey instanceof PublicKey)) { - throw new TypeError('Address must be an instance of PublicKey.'); - } - info.hashBuffer = Hash.sha256ripemd160(pubkey.toBuffer()); - info.type = Address.PayToPublicKeyHash; - return info; -}; + for (var i = 0; i < primes.length; i++) + if (p.modn(primes[i]) === 0) { + if (p.cmpn(primes[i]) === 0) { + return true; + } else { + return false; + } + } -/** - * Internal function to transform a {@link Script} into a `info` object. - * - * @param {Script} script - An instance of Script - * @returns {Object} An object with keys: hashBuffer, type - * @private - */ -Address._transformScript = function(script, network) { - $.checkArgument(script instanceof Script, 'script must be a Script instance'); - var info = script.getAddressInfo(network); - if (!info) { - throw new errors.Script.CantDeriveAddress(script); - } - return info; -}; + return true; +} -/** - * Creates a P2SH address from a set of public keys and a threshold. - * - * The addresses will be sorted lexicographically, as that is the trend in bitcoin. - * To create an address from unsorted public keys, use the {@link Script#buildMultisigOut} - * interface. - * - * @param {Array} publicKeys - a set of public keys to create an address - * @param {number} threshold - the number of signatures needed to release the funds - * @param {String|Network} network - either a Network instance, 'livenet', or 'testnet' - * @param {boolean=} nestedWitness - if the address uses a nested p2sh witness - * @return {Address} - */ -Address.createMultisig = function(publicKeys, threshold, network, nestedWitness) { - network = network || publicKeys[0].network || Networks.defaultNetwork; - var redeemScript = Script.buildMultisigOut(publicKeys, threshold); - if (nestedWitness) { - return Address.payingTo(Script.buildWitnessMultisigOutFromScript(redeemScript), network); +function fermatTest(p) { + var red = BN.mont(p); + return TWO.toRed(red).redPow(p.subn(1)).fromRed().cmpn(1) === 0; +} + +function findPrime(bits, gen) { + if (bits < 16) { + // this is what openssl does + if (gen === 2 || gen === 5) { + return new BN([0x8c, 0x7b]); + } else { + return new BN([0x8c, 0x27]); + } } - return Address.payingTo(redeemScript, network); -}; + gen = new BN(gen); -/** - * Internal function to transform a bitcoin address string - * - * @param {string} data - * @param {String|Network=} network - either a Network instance, 'livenet', or 'testnet' - * @param {string=} type - The type: 'pubkeyhash' or 'scripthash' - * @returns {Object} An object with keys: hashBuffer, network and type - * @private - */ -Address._transformString = function(data, network, type) { - if (typeof(data) !== 'string') { - throw new TypeError('data parameter supplied is not a string.'); + var num, n2; + + while (true) { + num = new BN(randomBytes(Math.ceil(bits / 8))); + while (num.bitLength() > bits) { + num.ishrn(1); + } + if (num.isEven()) { + num.iadd(ONE); + } + if (!num.testn(1)) { + num.iadd(TWO); + } + if (!gen.cmp(TWO)) { + while (num.mod(TWENTYFOUR).cmp(ELEVEN)) { + num.iadd(FOUR); + } + } else if (!gen.cmp(FIVE)) { + while (num.mod(TEN).cmp(THREE)) { + num.iadd(FOUR); + } + } + n2 = num.shrn(1); + if (simpleSieve(n2) && simpleSieve(num) && + fermatTest(n2) && fermatTest(num) && + millerRabin.test(n2) && millerRabin.test(num)) { + return num; + } } - data = data.trim(); - var addressBuffer = Base58Check.decode(data); - var info = Address._transformBuffer(addressBuffer, network, type); - return info; -}; -/** - * Instantiate an address from a PublicKey instance - * - * @param {PublicKey} data - * @param {String|Network} network - either a Network instance, 'livenet', or 'testnet' - * @returns {Address} A new valid and frozen instance of an Address - */ -Address.fromPublicKey = function(data, network) { - var info = Address._transformPublicKey(data); - network = network || Networks.defaultNetwork; - return new Address(info.hashBuffer, network, info.type); -}; +} -/** - * Instantiate an address from a ripemd160 public key hash - * - * @param {Buffer} hash - An instance of buffer of the hash - * @param {String|Network} network - either a Network instance, 'livenet', or 'testnet' - * @returns {Address} A new valid and frozen instance of an Address - */ -Address.fromPublicKeyHash = function(hash, network) { - var info = Address._transformHash(hash); - return new Address(info.hashBuffer, network, Address.PayToPublicKeyHash); -}; +},{"bn.js":66,"miller-rabin":158,"randombytes":182}],118:[function(require,module,exports){ +module.exports={ + "modp1": { + "gen": "02", + "prime": "ffffffffffffffffc90fdaa22168c234c4c6628b80dc1cd129024e088a67cc74020bbea63b139b22514a08798e3404ddef9519b3cd3a431b302b0a6df25f14374fe1356d6d51c245e485b576625e7ec6f44c42e9a63a3620ffffffffffffffff" + }, + "modp2": { + "gen": "02", + "prime": "ffffffffffffffffc90fdaa22168c234c4c6628b80dc1cd129024e088a67cc74020bbea63b139b22514a08798e3404ddef9519b3cd3a431b302b0a6df25f14374fe1356d6d51c245e485b576625e7ec6f44c42e9a637ed6b0bff5cb6f406b7edee386bfb5a899fa5ae9f24117c4b1fe649286651ece65381ffffffffffffffff" + }, + "modp5": { + "gen": "02", + "prime": "ffffffffffffffffc90fdaa22168c234c4c6628b80dc1cd129024e088a67cc74020bbea63b139b22514a08798e3404ddef9519b3cd3a431b302b0a6df25f14374fe1356d6d51c245e485b576625e7ec6f44c42e9a637ed6b0bff5cb6f406b7edee386bfb5a899fa5ae9f24117c4b1fe649286651ece45b3dc2007cb8a163bf0598da48361c55d39a69163fa8fd24cf5f83655d23dca3ad961c62f356208552bb9ed529077096966d670c354e4abc9804f1746c08ca237327ffffffffffffffff" + }, + "modp14": { + "gen": "02", + "prime": "ffffffffffffffffc90fdaa22168c234c4c6628b80dc1cd129024e088a67cc74020bbea63b139b22514a08798e3404ddef9519b3cd3a431b302b0a6df25f14374fe1356d6d51c245e485b576625e7ec6f44c42e9a637ed6b0bff5cb6f406b7edee386bfb5a899fa5ae9f24117c4b1fe649286651ece45b3dc2007cb8a163bf0598da48361c55d39a69163fa8fd24cf5f83655d23dca3ad961c62f356208552bb9ed529077096966d670c354e4abc9804f1746c08ca18217c32905e462e36ce3be39e772c180e86039b2783a2ec07a28fb5c55df06f4c52c9de2bcbf6955817183995497cea956ae515d2261898fa051015728e5a8aacaa68ffffffffffffffff" + }, + "modp15": { + "gen": "02", + "prime": "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" + }, + "modp16": { + "gen": "02", + "prime": "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" + }, + "modp17": { + "gen": "02", + "prime": "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" + }, + "modp18": { + "gen": "02", + "prime": "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" + } +} +},{}],119:[function(require,module,exports){ +'use strict'; -/** - * Instantiate an address from a ripemd160 script hash - * - * @param {Buffer} hash - An instance of buffer of the hash - * @param {String|Network} network - either a Network instance, 'livenet', or 'testnet' - * @returns {Address} A new valid and frozen instance of an Address - */ -Address.fromScriptHash = function(hash, network) { - $.checkArgument(hash, 'hash parameter is required'); - var info = Address._transformHash(hash); - return new Address(info.hashBuffer, network, Address.PayToScriptHash); -}; +var elliptic = exports; -/** - * Builds a p2sh address paying to script. This will hash the script and - * use that to create the address. - * If you want to extract an address associated with a script instead, - * see {{Address#fromScript}} - * - * @param {Script} script - An instance of Script - * @param {String|Network} network - either a Network instance, 'livenet', or 'testnet' - * @returns {Address} A new valid and frozen instance of an Address - */ -Address.payingTo = function(script, network) { - $.checkArgument(script, 'script is required'); - $.checkArgument(script instanceof Script, 'script must be instance of Script'); - return Address.fromScriptHash(Hash.sha256ripemd160(script.toBuffer()), network); -}; +elliptic.version = require('../package.json').version; +elliptic.utils = require('./elliptic/utils'); +elliptic.rand = require('brorand'); +elliptic.curve = require('./elliptic/curve'); +elliptic.curves = require('./elliptic/curves'); -/** - * Extract address from a Script. The script must be of one - * of the following types: p2pkh input, p2pkh output, p2sh input - * or p2sh output. - * This will analyze the script and extract address information from it. - * If you want to transform any script to a p2sh Address paying - * to that script's hash instead, use {{Address#payingTo}} - * - * @param {Script} script - An instance of Script - * @param {String|Network} network - either a Network instance, 'livenet', or 'testnet' - * @returns {Address} A new valid and frozen instance of an Address - */ -Address.fromScript = function(script, network) { - $.checkArgument(script instanceof Script, 'script must be a Script instance'); - var info = Address._transformScript(script, network); - return new Address(info.hashBuffer, network, info.type); -}; +// Protocols +elliptic.ec = require('./elliptic/ec'); +elliptic.eddsa = require('./elliptic/eddsa'); -/** - * Instantiate an address from a buffer of the address - * - * @param {Buffer} buffer - An instance of buffer of the address - * @param {String|Network=} network - either a Network instance, 'livenet', or 'testnet' - * @param {string=} type - The type of address: 'script' or 'pubkey' - * @returns {Address} A new valid and frozen instance of an Address - */ -Address.fromBuffer = function(buffer, network, type) { - var info = Address._transformBuffer(buffer, network, type); - return new Address(info.hashBuffer, info.network, info.type); -}; +},{"../package.json":134,"./elliptic/curve":122,"./elliptic/curves":125,"./elliptic/ec":126,"./elliptic/eddsa":129,"./elliptic/utils":133,"brorand":67}],120:[function(require,module,exports){ +'use strict'; -/** - * Instantiate an address from an address string - * - * @param {string} str - An string of the bitcoin address - * @param {String|Network=} network - either a Network instance, 'livenet', or 'testnet' - * @param {string=} type - The type of address: 'script' or 'pubkey' - * @returns {Address} A new valid and frozen instance of an Address - */ -Address.fromString = function(str, network, type) { - var info = Address._transformString(str, network, type); - return new Address(info.hashBuffer, info.network, info.type); -}; +var BN = require('bn.js'); +var elliptic = require('../../elliptic'); +var utils = elliptic.utils; +var getNAF = utils.getNAF; +var getJSF = utils.getJSF; +var assert = utils.assert; -/** - * Instantiate an address from an Object - * - * @param {string} json - An JSON string or Object with keys: hash, network and type - * @returns {Address} A new valid instance of an Address - */ -Address.fromObject = function fromObject(obj) { - $.checkState( - JSUtil.isHexa(obj.hash), - 'Unexpected hash property, "' + obj.hash + '", expected to be hex.' - ); - var hashBuffer = Buffer.from(obj.hash, 'hex'); - return new Address(hashBuffer, obj.network, obj.type); -}; +function BaseCurve(type, conf) { + this.type = type; + this.p = new BN(conf.p, 16); -/** - * Will return a validation error if exists - * - * @example - * ```javascript - * // a network mismatch error - * var error = Address.getValidationError('15vkcKf7gB23wLAnZLmbVuMiiVDc1Nm4a2', 'testnet'); - * ``` - * - * @param {string} data - The encoded data - * @param {String|Network} network - either a Network instance, 'livenet', or 'testnet' - * @param {string} type - The type of address: 'script' or 'pubkey' - * @returns {null|Error} The corresponding error message - */ -Address.getValidationError = function(data, network, type) { - var error; - try { - /* jshint nonew: false */ - new Address(data, network, type); - } catch (e) { - error = e; - } - return error; -}; + // Use Montgomery, when there is no fast reduction for the prime + this.red = conf.prime ? BN.red(conf.prime) : BN.mont(this.p); -/** - * Will return a boolean if an address is valid - * - * @example - * ```javascript - * assert(Address.isValid('15vkcKf7gB23wLAnZLmbVuMiiVDc1Nm4a2', 'livenet')); - * ``` - * - * @param {string} data - The encoded data - * @param {String|Network} network - either a Network instance, 'livenet', or 'testnet' - * @param {string} type - The type of address: 'script' or 'pubkey' - * @returns {boolean} The corresponding error message - */ -Address.isValid = function(data, network, type) { - return !Address.getValidationError(data, network, type); -}; + // Useful for many curves + this.zero = new BN(0).toRed(this.red); + this.one = new BN(1).toRed(this.red); + this.two = new BN(2).toRed(this.red); -/** - * Returns true if an address is of pay to public key hash type - * @return boolean - */ -Address.prototype.isPayToPublicKeyHash = function() { - return this.type === Address.PayToPublicKeyHash; -}; + // Curve configuration, optional + this.n = conf.n && new BN(conf.n, 16); + this.g = conf.g && this.pointFromJSON(conf.g, conf.gRed); -/** - * Returns true if an address is of pay to script hash type - * @return boolean - */ -Address.prototype.isPayToScriptHash = function() { - return this.type === Address.PayToScriptHash; -}; + // Temporary arrays + this._wnafT1 = new Array(4); + this._wnafT2 = new Array(4); + this._wnafT3 = new Array(4); + this._wnafT4 = new Array(4); -/** - * Will return a buffer representation of the address - * - * @returns {Buffer} Bitcoin address buffer - */ -Address.prototype.toBuffer = function() { - var version = Buffer.from([this.network[this.type]]); - return Buffer.concat([version, this.hashBuffer]); -}; + // Generalized Greg Maxwell's trick + var adjustCount = this.n && this.p.div(this.n); + if (!adjustCount || adjustCount.cmpn(100) > 0) { + this.redN = null; + } else { + this._maxwellTrick = true; + this.redN = this.n.toRed(this.red); + } +} +module.exports = BaseCurve; -/** - * @returns {Object} A plain object with the address information - */ -Address.prototype.toObject = Address.prototype.toJSON = function toObject() { - return { - hash: this.hashBuffer.toString('hex'), - type: this.type, - network: this.network.toString() - }; +BaseCurve.prototype.point = function point() { + throw new Error('Not implemented'); }; -/** - * Will return a the string representation of the address - * - * @returns {string} Bitcoin address - */ -Address.prototype.toString = function() { - return Base58Check.encode(this.toBuffer()); +BaseCurve.prototype.validate = function validate() { + throw new Error('Not implemented'); }; -/** - * Will return a string formatted for the console - * - * @returns {string} Bitcoin address - */ -Address.prototype.inspect = function() { - return ''; -}; +BaseCurve.prototype._fixedNafMul = function _fixedNafMul(p, k) { + assert(p.precomputed); + var doubles = p._getDoubles(); -module.exports = Address; + var naf = getNAF(k, 1); + var I = (1 << (doubles.step + 1)) - (doubles.step % 2 === 0 ? 2 : 1); + I /= 3; -var Script = require('./script'); + // Translate into more windowed form + var repr = []; + for (var j = 0; j < naf.length; j += doubles.step) { + var nafW = 0; + for (var k = j + doubles.step - 1; k >= j; k--) + nafW = (nafW << 1) + naf[k]; + repr.push(nafW); + } -}).call(this,require("buffer").Buffer) -},{"./crypto/hash":171,"./encoding/base58check":176,"./errors":180,"./networks":184,"./publickey":187,"./script":188,"./util/js":207,"./util/preconditions":208,"buffer":52,"lodash":245}],165:[function(require,module,exports){ -(function (Buffer){ -'use strict'; + var a = this.jpoint(null, null, null); + var b = this.jpoint(null, null, null); + for (var i = I; i > 0; i--) { + for (var j = 0; j < repr.length; j++) { + var nafW = repr[j]; + if (nafW === i) + b = b.mixedAdd(doubles.points[j]); + else if (nafW === -i) + b = b.mixedAdd(doubles.points[j].neg()); + } + a = a.add(b); + } + return a.toP(); +}; -var _ = require('lodash'); -var BlockHeader = require('./blockheader'); -var BN = require('../crypto/bn'); -var BufferUtil = require('../util/buffer'); -var BufferReader = require('../encoding/bufferreader'); -var BufferWriter = require('../encoding/bufferwriter'); -var Hash = require('../crypto/hash'); -var Transaction = require('../transaction'); -var $ = require('../util/preconditions'); +BaseCurve.prototype._wnafMul = function _wnafMul(p, k) { + var w = 4; -/** - * Instantiate a Block from a Buffer, JSON object, or Object with - * the properties of the Block - * - * @param {*} - A Buffer, JSON string, or Object - * @returns {Block} - * @constructor - */ -function Block(arg) { - if (!(this instanceof Block)) { - return new Block(arg); - } - _.extend(this, Block._from(arg)); - return this; -} + // Precompute window + var nafPoints = p._getNAFPoints(w); + w = nafPoints.wnd; + var wnd = nafPoints.points; -// https://github.com/bitcoin/bitcoin/blob/b5fa132329f0377d787a4a21c1686609c2bfaece/src/primitives/block.h#L14 -Block.MAX_BLOCK_SIZE = 1000000; + // Get NAF form + var naf = getNAF(k, w); -/** - * @param {*} - A Buffer, JSON string or Object - * @returns {Object} - An object representing block data - * @throws {TypeError} - If the argument was not recognized - * @private - */ -Block._from = function _from(arg) { - var info = {}; - if (BufferUtil.isBuffer(arg)) { - info = Block._fromBufferReader(BufferReader(arg)); - } else if (_.isObject(arg)) { - info = Block._fromObject(arg); - } else { - throw new TypeError('Unrecognized argument for Block'); - } - return info; -}; + // Add `this`*(N+1) for every w-NAF index + var acc = this.jpoint(null, null, null); + for (var i = naf.length - 1; i >= 0; i--) { + // Count zeroes + for (var k = 0; i >= 0 && naf[i] === 0; i--) + k++; + if (i >= 0) + k++; + acc = acc.dblp(k); -/** - * @param {Object} - A plain JavaScript object - * @returns {Object} - An object representing block data - * @private - */ -Block._fromObject = function _fromObject(data) { - var transactions = []; - data.transactions.forEach(function(tx) { - if (tx instanceof Transaction) { - transactions.push(tx); + if (i < 0) + break; + var z = naf[i]; + assert(z !== 0); + if (p.type === 'affine') { + // J +- P + if (z > 0) + acc = acc.mixedAdd(wnd[(z - 1) >> 1]); + else + acc = acc.mixedAdd(wnd[(-z - 1) >> 1].neg()); } else { - transactions.push(Transaction().fromObject(tx)); + // J +- J + if (z > 0) + acc = acc.add(wnd[(z - 1) >> 1]); + else + acc = acc.add(wnd[(-z - 1) >> 1].neg()); } - }); - var info = { - header: BlockHeader.fromObject(data.header), - transactions: transactions - }; - return info; + } + return p.type === 'affine' ? acc.toP() : acc; }; -/** - * @param {Object} - A plain JavaScript object - * @returns {Block} - An instance of block - */ -Block.fromObject = function fromObject(obj) { - var info = Block._fromObject(obj); - return new Block(info); -}; +BaseCurve.prototype._wnafMulAdd = function _wnafMulAdd(defW, + points, + coeffs, + len, + jacobianResult) { + var wndWidth = this._wnafT1; + var wnd = this._wnafT2; + var naf = this._wnafT3; -/** - * @param {BufferReader} - Block data - * @returns {Object} - An object representing the block data - * @private - */ -Block._fromBufferReader = function _fromBufferReader(br) { - var info = {}; - $.checkState(!br.finished(), 'No block data received'); - info.header = BlockHeader.fromBufferReader(br); - var transactions = br.readVarintNum(); - info.transactions = []; - for (var i = 0; i < transactions; i++) { - info.transactions.push(Transaction().fromBufferReader(br)); + // Fill all arrays + var max = 0; + for (var i = 0; i < len; i++) { + var p = points[i]; + var nafPoints = p._getNAFPoints(defW); + wndWidth[i] = nafPoints.wnd; + wnd[i] = nafPoints.points; } - return info; -}; -/** - * @param {BufferReader} - A buffer reader of the block - * @returns {Block} - An instance of block - */ -Block.fromBufferReader = function fromBufferReader(br) { - $.checkArgument(br, 'br is required'); - var info = Block._fromBufferReader(br); - return new Block(info); -}; + // Comb small window NAFs + for (var i = len - 1; i >= 1; i -= 2) { + var a = i - 1; + var b = i; + if (wndWidth[a] !== 1 || wndWidth[b] !== 1) { + naf[a] = getNAF(coeffs[a], wndWidth[a]); + naf[b] = getNAF(coeffs[b], wndWidth[b]); + max = Math.max(naf[a].length, max); + max = Math.max(naf[b].length, max); + continue; + } -/** - * @param {Buffer} - A buffer of the block - * @returns {Block} - An instance of block - */ -Block.fromBuffer = function fromBuffer(buf) { - return Block.fromBufferReader(new BufferReader(buf)); -}; + var comb = [ + points[a], /* 1 */ + null, /* 3 */ + null, /* 5 */ + points[b] /* 7 */ + ]; -/** - * @param {string} - str - A hex encoded string of the block - * @returns {Block} - A hex encoded string of the block - */ -Block.fromString = function fromString(str) { - var buf = Buffer.from(str, 'hex'); - return Block.fromBuffer(buf); -}; + // Try to avoid Projective points, if possible + if (points[a].y.cmp(points[b].y) === 0) { + comb[1] = points[a].add(points[b]); + comb[2] = points[a].toJ().mixedAdd(points[b].neg()); + } else if (points[a].y.cmp(points[b].y.redNeg()) === 0) { + comb[1] = points[a].toJ().mixedAdd(points[b]); + comb[2] = points[a].add(points[b].neg()); + } else { + comb[1] = points[a].toJ().mixedAdd(points[b]); + comb[2] = points[a].toJ().mixedAdd(points[b].neg()); + } -/** - * @param {Binary} - Raw block binary data or buffer - * @returns {Block} - An instance of block - */ -Block.fromRawBlock = function fromRawBlock(data) { - if (!BufferUtil.isBuffer(data)) { - data = Buffer.from(data, 'binary'); + var index = [ + -3, /* -1 -1 */ + -1, /* -1 0 */ + -5, /* -1 1 */ + -7, /* 0 -1 */ + 0, /* 0 0 */ + 7, /* 0 1 */ + 5, /* 1 -1 */ + 1, /* 1 0 */ + 3 /* 1 1 */ + ]; + + var jsf = getJSF(coeffs[a], coeffs[b]); + max = Math.max(jsf[0].length, max); + naf[a] = new Array(max); + naf[b] = new Array(max); + for (var j = 0; j < max; j++) { + var ja = jsf[0][j] | 0; + var jb = jsf[1][j] | 0; + + naf[a][j] = index[(ja + 1) * 3 + (jb + 1)]; + naf[b][j] = 0; + wnd[a] = comb; + } } - var br = BufferReader(data); - br.pos = Block.Values.START_OF_BLOCK; - var info = Block._fromBufferReader(br); - return new Block(info); -}; -/** - * @returns {Object} - A plain object with the block properties - */ -Block.prototype.toObject = Block.prototype.toJSON = function toObject() { - var transactions = []; - this.transactions.forEach(function(tx) { - transactions.push(tx.toObject()); - }); - return { - header: this.header.toObject(), - transactions: transactions - }; -}; + var acc = this.jpoint(null, null, null); + var tmp = this._wnafT4; + for (var i = max; i >= 0; i--) { + var k = 0; -/** - * @returns {Buffer} - A buffer of the block - */ -Block.prototype.toBuffer = function toBuffer() { - return this.toBufferWriter().concat(); -}; + while (i >= 0) { + var zero = true; + for (var j = 0; j < len; j++) { + tmp[j] = naf[j][i] | 0; + if (tmp[j] !== 0) + zero = false; + } + if (!zero) + break; + k++; + i--; + } + if (i >= 0) + k++; + acc = acc.dblp(k); + if (i < 0) + break; -/** - * @returns {string} - A hex encoded string of the block - */ -Block.prototype.toString = function toString() { - return this.toBuffer().toString('hex'); -}; + for (var j = 0; j < len; j++) { + var z = tmp[j]; + var p; + if (z === 0) + continue; + else if (z > 0) + p = wnd[j][(z - 1) >> 1]; + else if (z < 0) + p = wnd[j][(-z - 1) >> 1].neg(); -/** - * @param {BufferWriter} - An existing instance of BufferWriter - * @returns {BufferWriter} - An instance of BufferWriter representation of the Block - */ -Block.prototype.toBufferWriter = function toBufferWriter(bw) { - if (!bw) { - bw = new BufferWriter(); - } - bw.write(this.header.toBuffer()); - bw.writeVarintNum(this.transactions.length); - for (var i = 0; i < this.transactions.length; i++) { - this.transactions[i].toBufferWriter(bw); + if (p.type === 'affine') + acc = acc.mixedAdd(p); + else + acc = acc.add(p); + } } - return bw; -}; + // Zeroify references + for (var i = 0; i < len; i++) + wnd[i] = null; -/** - * Will iterate through each transaction and return an array of hashes - * @returns {Array} - An array with transaction hashes - */ -Block.prototype.getTransactionHashes = function getTransactionHashes() { - var hashes = []; - if (this.transactions.length === 0) { - return [Block.Values.NULL_HASH]; - } - for (var t = 0; t < this.transactions.length; t++) { - hashes.push(this.transactions[t]._getHash()); - } - return hashes; + if (jacobianResult) + return acc; + else + return acc.toP(); }; -/** - * Will build a merkle tree of all the transactions, ultimately arriving at - * a single point, the merkle root. - * @link https://en.bitcoin.it/wiki/Protocol_specification#Merkle_Trees - * @returns {Array} - An array with each level of the tree after the other. - */ -Block.prototype.getMerkleTree = function getMerkleTree() { - - var tree = this.getTransactionHashes(); - - var j = 0; - for (var size = this.transactions.length; size > 1; size = Math.floor((size + 1) / 2)) { - for (var i = 0; i < size; i += 2) { - var i2 = Math.min(i + 1, size - 1); - var buf = Buffer.concat([tree[j + i], tree[j + i2]]); - tree.push(Hash.sha256sha256(buf)); - } - j += size; - } +function BasePoint(curve, type) { + this.curve = curve; + this.type = type; + this.precomputed = null; +} +BaseCurve.BasePoint = BasePoint; - return tree; +BasePoint.prototype.eq = function eq(/*other*/) { + throw new Error('Not implemented'); }; -/** - * Calculates the merkleRoot from the transactions. - * @returns {Buffer} - A buffer of the merkle root hash - */ -Block.prototype.getMerkleRoot = function getMerkleRoot() { - var tree = this.getMerkleTree(); - return tree[tree.length - 1]; +BasePoint.prototype.validate = function validate() { + return this.curve.validate(this); }; -/** - * Verifies that the transactions in the block match the header merkle root - * @returns {Boolean} - If the merkle roots match - */ -Block.prototype.validMerkleRoot = function validMerkleRoot() { +BaseCurve.prototype.decodePoint = function decodePoint(bytes, enc) { + bytes = utils.toArray(bytes, enc); - var h = new BN(this.header.merkleRoot.toString('hex'), 'hex'); - var c = new BN(this.getMerkleRoot().toString('hex'), 'hex'); + var len = this.p.byteLength(); - if (h.cmp(c) !== 0) { - return false; - } + // uncompressed, hybrid-odd, hybrid-even + if ((bytes[0] === 0x04 || bytes[0] === 0x06 || bytes[0] === 0x07) && + bytes.length - 1 === 2 * len) { + if (bytes[0] === 0x06) + assert(bytes[bytes.length - 1] % 2 === 0); + else if (bytes[0] === 0x07) + assert(bytes[bytes.length - 1] % 2 === 1); - return true; -}; + var res = this.point(bytes.slice(1, 1 + len), + bytes.slice(1 + len, 1 + 2 * len)); -/** - * @returns {Buffer} - The little endian hash buffer of the header - */ -Block.prototype._getHash = function() { - return this.header._getHash(); + return res; + } else if ((bytes[0] === 0x02 || bytes[0] === 0x03) && + bytes.length - 1 === len) { + return this.pointFromX(bytes.slice(1, 1 + len), bytes[0] === 0x03); + } + throw new Error('Unknown point format'); }; -var idProperty = { - configurable: false, - enumerable: true, - /** - * @returns {string} - The big endian hash buffer of the header - */ - get: function() { - if (!this._id) { - this._id = this.header.id; - } - return this._id; - }, - set: _.noop +BasePoint.prototype.encodeCompressed = function encodeCompressed(enc) { + return this.encode(enc, true); }; -Object.defineProperty(Block.prototype, 'id', idProperty); -Object.defineProperty(Block.prototype, 'hash', idProperty); -/** - * @returns {string} - A string formatted for the console - */ -Block.prototype.inspect = function inspect() { - return ''; -}; +BasePoint.prototype._encode = function _encode(compact) { + var len = this.curve.p.byteLength(); + var x = this.getX().toArray('be', len); -Block.Values = { - START_OF_BLOCK: 8, // Start of block in raw block data - NULL_HASH: Buffer.from('0000000000000000000000000000000000000000000000000000000000000000', 'hex') + if (compact) + return [ this.getY().isEven() ? 0x02 : 0x03 ].concat(x); + + return [ 0x04 ].concat(x, this.getY().toArray('be', len)) ; }; -module.exports = Block; +BasePoint.prototype.encode = function encode(enc, compact) { + return utils.encode(this._encode(compact), enc); +}; -}).call(this,require("buffer").Buffer) -},{"../crypto/bn":169,"../crypto/hash":171,"../encoding/bufferreader":177,"../encoding/bufferwriter":178,"../transaction":191,"../util/buffer":206,"../util/preconditions":208,"./blockheader":166,"buffer":52,"lodash":245}],166:[function(require,module,exports){ -(function (Buffer){ -'use strict'; +BasePoint.prototype.precompute = function precompute(power) { + if (this.precomputed) + return this; -var _ = require('lodash'); -var BN = require('../crypto/bn'); -var BufferUtil = require('../util/buffer'); -var BufferReader = require('../encoding/bufferreader'); -var BufferWriter = require('../encoding/bufferwriter'); -var Hash = require('../crypto/hash'); -var JSUtil = require('../util/js'); -var $ = require('../util/preconditions'); + var precomputed = { + doubles: null, + naf: null, + beta: null + }; + precomputed.naf = this._getNAFPoints(8); + precomputed.doubles = this._getDoubles(4, power); + precomputed.beta = this._getBeta(); + this.precomputed = precomputed; -var GENESIS_BITS = 0x1d00ffff; + return this; +}; -/** - * Instantiate a BlockHeader from a Buffer, JSON object, or Object with - * the properties of the BlockHeader - * - * @param {*} - A Buffer, JSON string, or Object - * @returns {BlockHeader} - An instance of block header - * @constructor - */ -var BlockHeader = function BlockHeader(arg) { - if (!(this instanceof BlockHeader)) { - return new BlockHeader(arg); - } - var info = BlockHeader._from(arg); - this.version = info.version; - this.prevHash = info.prevHash; - this.merkleRoot = info.merkleRoot; - this.time = info.time; - this.timestamp = info.time; - this.bits = info.bits; - this.nonce = info.nonce; +BasePoint.prototype._hasDoubles = function _hasDoubles(k) { + if (!this.precomputed) + return false; - if (info.hash) { - $.checkState( - this.hash === info.hash, - 'Argument object hash property does not match block hash.' - ); - } + var doubles = this.precomputed.doubles; + if (!doubles) + return false; - return this; + return doubles.points.length >= Math.ceil((k.bitLength() + 1) / doubles.step); }; -/** - * @param {*} - A Buffer, JSON string or Object - * @returns {Object} - An object representing block header data - * @throws {TypeError} - If the argument was not recognized - * @private - */ -BlockHeader._from = function _from(arg) { - var info = {}; - if (BufferUtil.isBuffer(arg)) { - info = BlockHeader._fromBufferReader(BufferReader(arg)); - } else if (_.isObject(arg)) { - info = BlockHeader._fromObject(arg); - } else { - throw new TypeError('Unrecognized argument for BlockHeader'); - } - return info; -}; +BasePoint.prototype._getDoubles = function _getDoubles(step, power) { + if (this.precomputed && this.precomputed.doubles) + return this.precomputed.doubles; -/** - * @param {Object} - A JSON string - * @returns {Object} - An object representing block header data - * @private - */ -BlockHeader._fromObject = function _fromObject(data) { - $.checkArgument(data, 'data is required'); - var prevHash = data.prevHash; - var merkleRoot = data.merkleRoot; - if (_.isString(data.prevHash)) { - prevHash = BufferUtil.reverse(Buffer.from(data.prevHash, 'hex')); - } - if (_.isString(data.merkleRoot)) { - merkleRoot = BufferUtil.reverse(Buffer.from(data.merkleRoot, 'hex')); + var doubles = [ this ]; + var acc = this; + for (var i = 0; i < power; i += step) { + for (var j = 0; j < step; j++) + acc = acc.dbl(); + doubles.push(acc); } - var info = { - hash: data.hash, - version: data.version, - prevHash: prevHash, - merkleRoot: merkleRoot, - time: data.time, - timestamp: data.time, - bits: data.bits, - nonce: data.nonce + return { + step: step, + points: doubles }; - return info; }; -/** - * @param {Object} - A plain JavaScript object - * @returns {BlockHeader} - An instance of block header - */ -BlockHeader.fromObject = function fromObject(obj) { - var info = BlockHeader._fromObject(obj); - return new BlockHeader(info); -}; +BasePoint.prototype._getNAFPoints = function _getNAFPoints(wnd) { + if (this.precomputed && this.precomputed.naf) + return this.precomputed.naf; -/** - * @param {Binary} - Raw block binary data or buffer - * @returns {BlockHeader} - An instance of block header - */ -BlockHeader.fromRawBlock = function fromRawBlock(data) { - if (!BufferUtil.isBuffer(data)) { - data = Buffer.from(data, 'binary'); - } - var br = BufferReader(data); - br.pos = BlockHeader.Constants.START_OF_HEADER; - var info = BlockHeader._fromBufferReader(br); - return new BlockHeader(info); + var res = [ this ]; + var max = (1 << wnd) - 1; + var dbl = max === 1 ? null : this.dbl(); + for (var i = 1; i < max; i++) + res[i] = res[i - 1].add(dbl); + return { + wnd: wnd, + points: res + }; }; -/** - * @param {Buffer} - A buffer of the block header - * @returns {BlockHeader} - An instance of block header - */ -BlockHeader.fromBuffer = function fromBuffer(buf) { - var info = BlockHeader._fromBufferReader(BufferReader(buf)); - return new BlockHeader(info); +BasePoint.prototype._getBeta = function _getBeta() { + return null; }; -/** - * @param {string} - A hex encoded buffer of the block header - * @returns {BlockHeader} - An instance of block header - */ -BlockHeader.fromString = function fromString(str) { - var buf = Buffer.from(str, 'hex'); - return BlockHeader.fromBuffer(buf); +BasePoint.prototype.dblp = function dblp(k) { + var r = this; + for (var i = 0; i < k; i++) + r = r.dbl(); + return r; }; -/** - * @param {BufferReader} - A BufferReader of the block header - * @returns {Object} - An object representing block header data - * @private - */ -BlockHeader._fromBufferReader = function _fromBufferReader(br) { - var info = {}; - info.version = br.readInt32LE(); - info.prevHash = br.read(32); - info.merkleRoot = br.read(32); - info.time = br.readUInt32LE(); - info.bits = br.readUInt32LE(); - info.nonce = br.readUInt32LE(); - return info; -}; +},{"../../elliptic":119,"bn.js":66}],121:[function(require,module,exports){ +'use strict'; -/** - * @param {BufferReader} - A BufferReader of the block header - * @returns {BlockHeader} - An instance of block header - */ -BlockHeader.fromBufferReader = function fromBufferReader(br) { - var info = BlockHeader._fromBufferReader(br); - return new BlockHeader(info); -}; +var curve = require('../curve'); +var elliptic = require('../../elliptic'); +var BN = require('bn.js'); +var inherits = require('inherits'); +var Base = curve.base; -/** - * @returns {Object} - A plain object of the BlockHeader - */ -BlockHeader.prototype.toObject = BlockHeader.prototype.toJSON = function toObject() { - return { - hash: this.hash, - version: this.version, - prevHash: BufferUtil.reverse(this.prevHash).toString('hex'), - merkleRoot: BufferUtil.reverse(this.merkleRoot).toString('hex'), - time: this.time, - bits: this.bits, - nonce: this.nonce - }; -}; +var assert = elliptic.utils.assert; -/** - * @returns {Buffer} - A Buffer of the BlockHeader - */ -BlockHeader.prototype.toBuffer = function toBuffer() { - return this.toBufferWriter().concat(); +function EdwardsCurve(conf) { + // NOTE: Important as we are creating point in Base.call() + this.twisted = (conf.a | 0) !== 1; + this.mOneA = this.twisted && (conf.a | 0) === -1; + this.extended = this.mOneA; + + Base.call(this, 'edwards', conf); + + this.a = new BN(conf.a, 16).umod(this.red.m); + this.a = this.a.toRed(this.red); + this.c = new BN(conf.c, 16).toRed(this.red); + this.c2 = this.c.redSqr(); + this.d = new BN(conf.d, 16).toRed(this.red); + this.dd = this.d.redAdd(this.d); + + assert(!this.twisted || this.c.fromRed().cmpn(1) === 0); + this.oneC = (conf.c | 0) === 1; +} +inherits(EdwardsCurve, Base); +module.exports = EdwardsCurve; + +EdwardsCurve.prototype._mulA = function _mulA(num) { + if (this.mOneA) + return num.redNeg(); + else + return this.a.redMul(num); }; -/** - * @returns {string} - A hex encoded string of the BlockHeader - */ -BlockHeader.prototype.toString = function toString() { - return this.toBuffer().toString('hex'); +EdwardsCurve.prototype._mulC = function _mulC(num) { + if (this.oneC) + return num; + else + return this.c.redMul(num); }; -/** - * @param {BufferWriter} - An existing instance BufferWriter - * @returns {BufferWriter} - An instance of BufferWriter representation of the BlockHeader - */ -BlockHeader.prototype.toBufferWriter = function toBufferWriter(bw) { - if (!bw) { - bw = new BufferWriter(); - } - bw.writeInt32LE(this.version); - bw.write(this.prevHash); - bw.write(this.merkleRoot); - bw.writeUInt32LE(this.time); - bw.writeUInt32LE(this.bits); - bw.writeUInt32LE(this.nonce); - return bw; +// Just for compatibility with Short curve +EdwardsCurve.prototype.jpoint = function jpoint(x, y, z, t) { + return this.point(x, y, z, t); }; -/** - * Returns the target difficulty for this block - * @param {Number} bits - * @returns {BN} An instance of BN with the decoded difficulty bits - */ -BlockHeader.prototype.getTargetDifficulty = function getTargetDifficulty(bits) { - bits = bits || this.bits; +EdwardsCurve.prototype.pointFromX = function pointFromX(x, odd) { + x = new BN(x, 16); + if (!x.red) + x = x.toRed(this.red); - var target = new BN(bits & 0xffffff); - var mov = 8 * ((bits >>> 24) - 3); - while (mov-- > 0) { - target = target.mul(new BN(2)); - } - return target; -}; + var x2 = x.redSqr(); + var rhs = this.c2.redSub(this.a.redMul(x2)); + var lhs = this.one.redSub(this.c2.redMul(this.d).redMul(x2)); -/** - * @link https://en.bitcoin.it/wiki/Difficulty - * @return {Number} - */ -BlockHeader.prototype.getDifficulty = function getDifficulty() { - var difficulty1TargetBN = this.getTargetDifficulty(GENESIS_BITS).mul(new BN(Math.pow(10, 8))); - var currentTargetBN = this.getTargetDifficulty(); + var y2 = rhs.redMul(lhs.redInvm()); + var y = y2.redSqrt(); + if (y.redSqr().redSub(y2).cmp(this.zero) !== 0) + throw new Error('invalid point'); - var difficultyString = difficulty1TargetBN.div(currentTargetBN).toString(10); - var decimalPos = difficultyString.length - 8; - difficultyString = difficultyString.slice(0, decimalPos) + '.' + difficultyString.slice(decimalPos); + var isOdd = y.fromRed().isOdd(); + if (odd && !isOdd || !odd && isOdd) + y = y.redNeg(); - return parseFloat(difficultyString); + return this.point(x, y); }; -/** - * @returns {Buffer} - The little endian hash buffer of the header - */ -BlockHeader.prototype._getHash = function hash() { - var buf = this.toBuffer(); - return Hash.sha256sha256(buf); -}; +EdwardsCurve.prototype.pointFromY = function pointFromY(y, odd) { + y = new BN(y, 16); + if (!y.red) + y = y.toRed(this.red); -var idProperty = { - configurable: false, - enumerable: true, - /** - * @returns {string} - The big endian hash buffer of the header - */ - get: function() { - if (!this._id) { - this._id = BufferReader(this._getHash()).readReverse().toString('hex'); - } - return this._id; - }, - set: _.noop -}; -Object.defineProperty(BlockHeader.prototype, 'id', idProperty); -Object.defineProperty(BlockHeader.prototype, 'hash', idProperty); + // x^2 = (y^2 - 1) / (d y^2 + 1) + var y2 = y.redSqr(); + var lhs = y2.redSub(this.one); + var rhs = y2.redMul(this.d).redAdd(this.one); + var x2 = lhs.redMul(rhs.redInvm()); -/** - * @returns {Boolean} - If timestamp is not too far in the future - */ -BlockHeader.prototype.validTimestamp = function validTimestamp() { - var currentTime = Math.round(new Date().getTime() / 1000); - if (this.time > currentTime + BlockHeader.Constants.MAX_TIME_OFFSET) { - return false; + if (x2.cmp(this.zero) === 0) { + if (odd) + throw new Error('invalid point'); + else + return this.point(this.zero, y); } - return true; -}; -/** - * @returns {Boolean} - If the proof-of-work hash satisfies the target difficulty - */ -BlockHeader.prototype.validProofOfWork = function validProofOfWork() { - var pow = new BN(this.id, 'hex'); - var target = this.getTargetDifficulty(); - - if (pow.cmp(target) > 0) { - return false; - } - return true; -}; + var x = x2.redSqrt(); + if (x.redSqr().redSub(x2).cmp(this.zero) !== 0) + throw new Error('invalid point'); -/** - * @returns {string} - A string formatted for the console - */ -BlockHeader.prototype.inspect = function inspect() { - return ''; -}; + if (x.isOdd() !== odd) + x = x.redNeg(); -BlockHeader.Constants = { - START_OF_HEADER: 8, // Start buffer position in raw block data - MAX_TIME_OFFSET: 2 * 60 * 60, // The max a timestamp can be in the future - LARGEST_HASH: new BN('10000000000000000000000000000000000000000000000000000000000000000', 'hex') + return this.point(x, y); }; -module.exports = BlockHeader; - -}).call(this,require("buffer").Buffer) -},{"../crypto/bn":169,"../crypto/hash":171,"../encoding/bufferreader":177,"../encoding/bufferwriter":178,"../util/buffer":206,"../util/js":207,"../util/preconditions":208,"buffer":52,"lodash":245}],167:[function(require,module,exports){ -module.exports = require('./block'); - -module.exports.BlockHeader = require('./blockheader'); -module.exports.MerkleBlock = require('./merkleblock'); +EdwardsCurve.prototype.validate = function validate(point) { + if (point.isInfinity()) + return true; -},{"./block":165,"./blockheader":166,"./merkleblock":168}],168:[function(require,module,exports){ -(function (Buffer){ -'use strict'; + // Curve: A * X^2 + Y^2 = C^2 * (1 + D * X^2 * Y^2) + point.normalize(); -var _ = require('lodash'); -var BlockHeader = require('./blockheader'); -var BufferUtil = require('../util/buffer'); -var BufferReader = require('../encoding/bufferreader'); -var BufferWriter = require('../encoding/bufferwriter'); -var Hash = require('../crypto/hash'); -var JSUtil = require('../util/js'); -var Transaction = require('../transaction'); -var errors = require('../errors'); -var $ = require('../util/preconditions'); + var x2 = point.x.redSqr(); + var y2 = point.y.redSqr(); + var lhs = x2.redMul(this.a).redAdd(y2); + var rhs = this.c2.redMul(this.one.redAdd(this.d.redMul(x2).redMul(y2))); -/** - * Instantiate a MerkleBlock from a Buffer, JSON object, or Object with - * the properties of the Block - * - * @param {*} - A Buffer, JSON string, or Object representing a MerkleBlock - * @returns {MerkleBlock} - * @constructor - */ -function MerkleBlock(arg) { - /* jshint maxstatements: 18 */ + return lhs.cmp(rhs) === 0; +}; - if (!(this instanceof MerkleBlock)) { - return new MerkleBlock(arg); - } +function Point(curve, x, y, z, t) { + Base.BasePoint.call(this, curve, 'projective'); + if (x === null && y === null && z === null) { + this.x = this.curve.zero; + this.y = this.curve.one; + this.z = this.curve.one; + this.t = this.curve.zero; + this.zOne = true; + } else { + this.x = new BN(x, 16); + this.y = new BN(y, 16); + this.z = z ? new BN(z, 16) : this.curve.one; + this.t = t && new BN(t, 16); + if (!this.x.red) + this.x = this.x.toRed(this.curve.red); + if (!this.y.red) + this.y = this.y.toRed(this.curve.red); + if (!this.z.red) + this.z = this.z.toRed(this.curve.red); + if (this.t && !this.t.red) + this.t = this.t.toRed(this.curve.red); + this.zOne = this.z === this.curve.one; - var info = {}; - if (BufferUtil.isBuffer(arg)) { - info = MerkleBlock._fromBufferReader(BufferReader(arg)); - } else if (_.isObject(arg)) { - var header; - if(arg.header instanceof BlockHeader) { - header = arg.header; - } else { - header = BlockHeader.fromObject(arg.header); + // Use extended coordinates + if (this.curve.extended && !this.t) { + this.t = this.x.redMul(this.y); + if (!this.zOne) + this.t = this.t.redMul(this.z.redInvm()); } - info = { - /** - * @name MerkleBlock#header - * @type {BlockHeader} - */ - header: header, - /** - * @name MerkleBlock#numTransactions - * @type {Number} - */ - numTransactions: arg.numTransactions, - /** - * @name MerkleBlock#hashes - * @type {String[]} - */ - hashes: arg.hashes, - /** - * @name MerkleBlock#flags - * @type {Number[]} - */ - flags: arg.flags - }; - } else { - throw new TypeError('Unrecognized argument for MerkleBlock'); } - _.extend(this,info); - this._flagBitsUsed = 0; - this._hashesUsed = 0; - - return this; } +inherits(Point, Base.BasePoint); -/** - * @param {Buffer} - MerkleBlock data in a Buffer object - * @returns {MerkleBlock} - A MerkleBlock object - */ -MerkleBlock.fromBuffer = function fromBuffer(buf) { - return MerkleBlock.fromBufferReader(BufferReader(buf)); +EdwardsCurve.prototype.pointFromJSON = function pointFromJSON(obj) { + return Point.fromJSON(this, obj); }; -/** - * @param {BufferReader} - MerkleBlock data in a BufferReader object - * @returns {MerkleBlock} - A MerkleBlock object - */ -MerkleBlock.fromBufferReader = function fromBufferReader(br) { - return new MerkleBlock(MerkleBlock._fromBufferReader(br)); +EdwardsCurve.prototype.point = function point(x, y, z, t) { + return new Point(this, x, y, z, t); }; -/** - * @returns {Buffer} - A buffer of the block - */ -MerkleBlock.prototype.toBuffer = function toBuffer() { - return this.toBufferWriter().concat(); +Point.fromJSON = function fromJSON(curve, obj) { + return new Point(curve, obj[0], obj[1], obj[2]); }; -/** - * @param {BufferWriter} - An existing instance of BufferWriter - * @returns {BufferWriter} - An instance of BufferWriter representation of the MerkleBlock - */ -MerkleBlock.prototype.toBufferWriter = function toBufferWriter(bw) { - if (!bw) { - bw = new BufferWriter(); - } - bw.write(this.header.toBuffer()); - bw.writeUInt32LE(this.numTransactions); - bw.writeVarintNum(this.hashes.length); - for (var i = 0; i < this.hashes.length; i++) { - bw.write(Buffer.from(this.hashes[i], 'hex')); - } - bw.writeVarintNum(this.flags.length); - for (i = 0; i < this.flags.length; i++) { - bw.writeUInt8(this.flags[i]); - } - return bw; +Point.prototype.inspect = function inspect() { + if (this.isInfinity()) + return ''; + return ''; }; -/** - * @returns {Object} - A plain object with the MerkleBlock properties - */ -MerkleBlock.prototype.toObject = MerkleBlock.prototype.toJSON = function toObject() { - return { - header: this.header.toObject(), - numTransactions: this.numTransactions, - hashes: this.hashes, - flags: this.flags - }; +Point.prototype.isInfinity = function isInfinity() { + // XXX This code assumes that zero is always zero in red + return this.x.cmpn(0) === 0 && + this.y.cmp(this.z) === 0; }; -/** - * Verify that the MerkleBlock is valid - * @returns {Boolean} - True/False whether this MerkleBlock is Valid - */ -MerkleBlock.prototype.validMerkleTree = function validMerkleTree() { - $.checkState(_.isArray(this.flags), 'MerkleBlock flags is not an array'); - $.checkState(_.isArray(this.hashes), 'MerkleBlock hashes is not an array'); - - // Can't have more hashes than numTransactions - if(this.hashes.length > this.numTransactions) { - return false; - } - - // Can't have more flag bits than num hashes - if(this.flags.length * 8 < this.hashes.length) { - return false; - } +Point.prototype._extDbl = function _extDbl() { + // hyperelliptic.org/EFD/g1p/auto-twisted-extended-1.html + // #doubling-dbl-2008-hwcd + // 4M + 4S - var height = this._calcTreeHeight(); - var opts = { hashesUsed: 0, flagBitsUsed: 0 }; - var root = this._traverseMerkleTree(height, 0, opts); - if(opts.hashesUsed !== this.hashes.length) { - return false; - } - return BufferUtil.equals(root, this.header.merkleRoot); + // A = X1^2 + var a = this.x.redSqr(); + // B = Y1^2 + var b = this.y.redSqr(); + // C = 2 * Z1^2 + var c = this.z.redSqr(); + c = c.redIAdd(c); + // D = a * A + var d = this.curve._mulA(a); + // E = (X1 + Y1)^2 - A - B + var e = this.x.redAdd(this.y).redSqr().redISub(a).redISub(b); + // G = D + B + var g = d.redAdd(b); + // F = G - C + var f = g.redSub(c); + // H = D - B + var h = d.redSub(b); + // X3 = E * F + var nx = e.redMul(f); + // Y3 = G * H + var ny = g.redMul(h); + // T3 = E * H + var nt = e.redMul(h); + // Z3 = F * G + var nz = f.redMul(g); + return this.curve.point(nx, ny, nz, nt); }; -/** - * Return a list of all the txs hash that match the filter - * @returns {Array} - txs hash that match the filter - */ -MerkleBlock.prototype.filterdTxsHash = function filterdTxsHash() { - $.checkState(_.isArray(this.flags), 'MerkleBlock flags is not an array'); - $.checkState(_.isArray(this.hashes), 'MerkleBlock hashes is not an array'); +Point.prototype._projDbl = function _projDbl() { + // hyperelliptic.org/EFD/g1p/auto-twisted-projective.html + // #doubling-dbl-2008-bbjlp + // #doubling-dbl-2007-bl + // and others + // Generally 3M + 4S or 2M + 4S - // Can't have more hashes than numTransactions - if(this.hashes.length > this.numTransactions) { - throw new errors.MerkleBlock.InvalidMerkleTree(); - } + // B = (X1 + Y1)^2 + var b = this.x.redAdd(this.y).redSqr(); + // C = X1^2 + var c = this.x.redSqr(); + // D = Y1^2 + var d = this.y.redSqr(); - // Can't have more flag bits than num hashes - if(this.flags.length * 8 < this.hashes.length) { - throw new errors.MerkleBlock.InvalidMerkleTree(); + var nx; + var ny; + var nz; + if (this.curve.twisted) { + // E = a * C + var e = this.curve._mulA(c); + // F = E + D + var f = e.redAdd(d); + if (this.zOne) { + // X3 = (B - C - D) * (F - 2) + nx = b.redSub(c).redSub(d).redMul(f.redSub(this.curve.two)); + // Y3 = F * (E - D) + ny = f.redMul(e.redSub(d)); + // Z3 = F^2 - 2 * F + nz = f.redSqr().redSub(f).redSub(f); + } else { + // H = Z1^2 + var h = this.z.redSqr(); + // J = F - 2 * H + var j = f.redSub(h).redISub(h); + // X3 = (B-C-D)*J + nx = b.redSub(c).redISub(d).redMul(j); + // Y3 = F * (E - D) + ny = f.redMul(e.redSub(d)); + // Z3 = F * J + nz = f.redMul(j); + } + } else { + // E = C + D + var e = c.redAdd(d); + // H = (c * Z1)^2 + var h = this.curve._mulC(this.c.redMul(this.z)).redSqr(); + // J = E - 2 * H + var j = e.redSub(h).redSub(h); + // X3 = c * (B - E) * J + nx = this.curve._mulC(b.redISub(e)).redMul(j); + // Y3 = c * E * (C - D) + ny = this.curve._mulC(e).redMul(c.redISub(d)); + // Z3 = E * J + nz = e.redMul(j); } + return this.curve.point(nx, ny, nz); +}; - // If there is only one hash the filter do not match any txs in the block - if(this.hashes.length === 1) { - return []; - }; +Point.prototype.dbl = function dbl() { + if (this.isInfinity()) + return this; - var height = this._calcTreeHeight(); - var opts = { hashesUsed: 0, flagBitsUsed: 0 }; - var txs = this._traverseMerkleTree(height, 0, opts, true); - if(opts.hashesUsed !== this.hashes.length) { - throw new errors.MerkleBlock.InvalidMerkleTree(); - } - return txs; + // Double in extended coordinates + if (this.curve.extended) + return this._extDbl(); + else + return this._projDbl(); }; -/** - * Traverse a the tree in this MerkleBlock, validating it along the way - * Modeled after Bitcoin Core merkleblock.cpp TraverseAndExtract() - * @param {Number} - depth - Current height - * @param {Number} - pos - Current position in the tree - * @param {Object} - opts - Object with values that need to be mutated throughout the traversal - * @param {Boolean} - checkForTxs - if true return opts.txs else return the Merkle Hash - * @param {Number} - opts.flagBitsUsed - Number of flag bits used, should start at 0 - * @param {Number} - opts.hashesUsed - Number of hashes used, should start at 0 - * @param {Array} - opts.txs - Will finish populated by transactions found during traversal that match the filter - * @returns {Buffer|null} - Buffer containing the Merkle Hash for that height - * @returns {Array} - transactions found during traversal that match the filter - * @private - */ -MerkleBlock.prototype._traverseMerkleTree = function traverseMerkleTree(depth, pos, opts, checkForTxs) { - /* jshint maxcomplexity: 12*/ - /* jshint maxstatements: 20 */ +Point.prototype._extAdd = function _extAdd(p) { + // hyperelliptic.org/EFD/g1p/auto-twisted-extended-1.html + // #addition-add-2008-hwcd-3 + // 8M - opts = opts || {}; - opts.txs = opts.txs || []; - opts.flagBitsUsed = opts.flagBitsUsed || 0; - opts.hashesUsed = opts.hashesUsed || 0; - var checkForTxs = checkForTxs || false; + // A = (Y1 - X1) * (Y2 - X2) + var a = this.y.redSub(this.x).redMul(p.y.redSub(p.x)); + // B = (Y1 + X1) * (Y2 + X2) + var b = this.y.redAdd(this.x).redMul(p.y.redAdd(p.x)); + // C = T1 * k * T2 + var c = this.t.redMul(this.curve.dd).redMul(p.t); + // D = Z1 * 2 * Z2 + var d = this.z.redMul(p.z.redAdd(p.z)); + // E = B - A + var e = b.redSub(a); + // F = D - C + var f = d.redSub(c); + // G = D + C + var g = d.redAdd(c); + // H = B + A + var h = b.redAdd(a); + // X3 = E * F + var nx = e.redMul(f); + // Y3 = G * H + var ny = g.redMul(h); + // T3 = E * H + var nt = e.redMul(h); + // Z3 = F * G + var nz = f.redMul(g); + return this.curve.point(nx, ny, nz, nt); +}; - if(opts.flagBitsUsed > this.flags.length * 8) { - return null; - } - var isParentOfMatch = (this.flags[opts.flagBitsUsed >> 3] >>> (opts.flagBitsUsed++ & 7)) & 1; - if(depth === 0 || !isParentOfMatch) { - if(opts.hashesUsed >= this.hashes.length) { - return null; - } - var hash = this.hashes[opts.hashesUsed++]; - if(depth === 0 && isParentOfMatch) { - opts.txs.push(hash); - } - return Buffer.from(hash, 'hex'); +Point.prototype._projAdd = function _projAdd(p) { + // hyperelliptic.org/EFD/g1p/auto-twisted-projective.html + // #addition-add-2008-bbjlp + // #addition-add-2007-bl + // 10M + 1S + + // A = Z1 * Z2 + var a = this.z.redMul(p.z); + // B = A^2 + var b = a.redSqr(); + // C = X1 * X2 + var c = this.x.redMul(p.x); + // D = Y1 * Y2 + var d = this.y.redMul(p.y); + // E = d * C * D + var e = this.curve.d.redMul(c).redMul(d); + // F = B - E + var f = b.redSub(e); + // G = B + E + var g = b.redAdd(e); + // X3 = A * F * ((X1 + Y1) * (X2 + Y2) - C - D) + var tmp = this.x.redAdd(this.y).redMul(p.x.redAdd(p.y)).redISub(c).redISub(d); + var nx = a.redMul(f).redMul(tmp); + var ny; + var nz; + if (this.curve.twisted) { + // Y3 = A * G * (D - a * C) + ny = a.redMul(g).redMul(d.redSub(this.curve._mulA(c))); + // Z3 = F * G + nz = f.redMul(g); } else { - var left = this._traverseMerkleTree(depth-1, pos*2, opts); - var right = left; - if(pos*2+1 < this._calcTreeWidth(depth-1)) { - right = this._traverseMerkleTree(depth-1, pos*2+1, opts); - } - if (checkForTxs){ - return opts.txs; - } else { - return Hash.sha256sha256(new Buffer.concat([left, right])); - }; + // Y3 = A * G * (D - C) + ny = a.redMul(g).redMul(d.redSub(c)); + // Z3 = c * F * G + nz = this.curve._mulC(f).redMul(g); } + return this.curve.point(nx, ny, nz); }; -/** Calculates the width of a merkle tree at a given height. - * Modeled after Bitcoin Core merkleblock.h CalcTreeWidth() - * @param {Number} - Height at which we want the tree width - * @returns {Number} - Width of the tree at a given height - * @private - */ -MerkleBlock.prototype._calcTreeWidth = function calcTreeWidth(height) { - return (this.numTransactions + (1 << height) - 1) >> height; +Point.prototype.add = function add(p) { + if (this.isInfinity()) + return p; + if (p.isInfinity()) + return this; + + if (this.curve.extended) + return this._extAdd(p); + else + return this._projAdd(p); }; -/** Calculates the height of the merkle tree in this MerkleBlock - * @param {Number} - Height at which we want the tree width - * @returns {Number} - Height of the merkle tree in this MerkleBlock - * @private - */ -MerkleBlock.prototype._calcTreeHeight = function calcTreeHeight() { - var height = 0; - while (this._calcTreeWidth(height) > 1) { - height++; - } - return height; -}; - -/** - * @param {Transaction|String} - Transaction or Transaction ID Hash - * @returns {Boolean} - return true/false if this MerkleBlock has the TX or not - * @private - */ -MerkleBlock.prototype.hasTransaction = function hasTransaction(tx) { - $.checkArgument(!_.isUndefined(tx), 'tx cannot be undefined'); - $.checkArgument(tx instanceof Transaction || typeof tx === 'string', - 'Invalid tx given, tx must be a "string" or "Transaction"'); - - var hash = tx; - if(tx instanceof Transaction) { - // We need to reverse the id hash for the lookup - hash = BufferUtil.reverse(Buffer.from(tx.id, 'hex')).toString('hex'); - } - - var txs = []; - var height = this._calcTreeHeight(); - this._traverseMerkleTree(height, 0, { txs: txs }); - return txs.indexOf(hash) !== -1; +Point.prototype.mul = function mul(k) { + if (this._hasDoubles(k)) + return this.curve._fixedNafMul(this, k); + else + return this.curve._wnafMul(this, k); }; -/** - * @param {Buffer} - MerkleBlock data - * @returns {Object} - An Object representing merkleblock data - * @private - */ -MerkleBlock._fromBufferReader = function _fromBufferReader(br) { - $.checkState(!br.finished(), 'No merkleblock data received'); - var info = {}; - info.header = BlockHeader.fromBufferReader(br); - info.numTransactions = br.readUInt32LE(); - var numHashes = br.readVarintNum(); - info.hashes = []; - for (var i = 0; i < numHashes; i++) { - info.hashes.push(br.read(32).toString('hex')); - } - var numFlags = br.readVarintNum(); - info.flags = []; - for (i = 0; i < numFlags; i++) { - info.flags.push(br.readUInt8()); - } - return info; +Point.prototype.mulAdd = function mulAdd(k1, p, k2) { + return this.curve._wnafMulAdd(1, [ this, p ], [ k1, k2 ], 2, false); }; -/** - * @param {Object} - A plain JavaScript object - * @returns {Block} - An instance of block - */ -MerkleBlock.fromObject = function fromObject(obj) { - return new MerkleBlock(obj); +Point.prototype.jmulAdd = function jmulAdd(k1, p, k2) { + return this.curve._wnafMulAdd(1, [ this, p ], [ k1, k2 ], 2, true); }; -module.exports = MerkleBlock; - -}).call(this,require("buffer").Buffer) -},{"../crypto/hash":171,"../encoding/bufferreader":177,"../encoding/bufferwriter":178,"../errors":180,"../transaction":191,"../util/buffer":206,"../util/js":207,"../util/preconditions":208,"./blockheader":166,"buffer":52,"lodash":245}],169:[function(require,module,exports){ -(function (Buffer){ -'use strict'; - -var BN = require('bn.js'); -var $ = require('../util/preconditions'); -var _ = require('lodash'); +Point.prototype.normalize = function normalize() { + if (this.zOne) + return this; -var reversebuf = function(buf) { - var buf2 = Buffer.alloc(buf.length); - for (var i = 0; i < buf.length; i++) { - buf2[i] = buf[buf.length - 1 - i]; - } - return buf2; + // Normalize coordinates + var zi = this.z.redInvm(); + this.x = this.x.redMul(zi); + this.y = this.y.redMul(zi); + if (this.t) + this.t = this.t.redMul(zi); + this.z = this.curve.one; + this.zOne = true; + return this; }; -BN.Zero = new BN(0); -BN.One = new BN(1); -BN.Minus1 = new BN(-1); +Point.prototype.neg = function neg() { + return this.curve.point(this.x.redNeg(), + this.y, + this.z, + this.t && this.t.redNeg()); +}; -BN.fromNumber = function(n) { - $.checkArgument(_.isNumber(n)); - return new BN(n); +Point.prototype.getX = function getX() { + this.normalize(); + return this.x.fromRed(); }; -BN.fromString = function(str, base) { - $.checkArgument(_.isString(str)); - return new BN(str, base); +Point.prototype.getY = function getY() { + this.normalize(); + return this.y.fromRed(); }; -BN.fromBuffer = function(buf, opts) { - if (typeof opts !== 'undefined' && opts.endian === 'little') { - buf = reversebuf(buf); - } - var hex = buf.toString('hex'); - var bn = new BN(hex, 16); - return bn; +Point.prototype.eq = function eq(other) { + return this === other || + this.getX().cmp(other.getX()) === 0 && + this.getY().cmp(other.getY()) === 0; }; -/** - * Instantiate a BigNumber from a "signed magnitude buffer" - * (a buffer where the most significant bit represents the sign (0 = positive, -1 = negative)) - */ -BN.fromSM = function(buf, opts) { - var ret; - if (buf.length === 0) { - return BN.fromBuffer(Buffer.from([0])); - } +Point.prototype.eqXToP = function eqXToP(x) { + var rx = x.toRed(this.curve.red).redMul(this.z); + if (this.x.cmp(rx) === 0) + return true; - var endian = 'big'; - if (opts) { - endian = opts.endian; - } - if (endian === 'little') { - buf = reversebuf(buf); - } + var xc = x.clone(); + var t = this.curve.redN.redMul(this.z); + for (;;) { + xc.iadd(this.curve.n); + if (xc.cmp(this.curve.p) >= 0) + return false; - if (buf[0] & 0x80) { - buf[0] = buf[0] & 0x7f; - ret = BN.fromBuffer(buf); - ret.neg().copy(ret); - } else { - ret = BN.fromBuffer(buf); + rx.redIAdd(t); + if (this.x.cmp(rx) === 0) + return true; } - return ret; + return false; }; +// Compatibility with BaseCurve +Point.prototype.toP = Point.prototype.normalize; +Point.prototype.mixedAdd = Point.prototype.add; -BN.prototype.toNumber = function() { - return parseInt(this.toString(10), 10); -}; +},{"../../elliptic":119,"../curve":122,"bn.js":66,"inherits":153}],122:[function(require,module,exports){ +'use strict'; -BN.prototype.toBuffer = function(opts) { - var buf, hex; - if (opts && opts.size) { - hex = this.toString(16, 2); - var natlen = hex.length / 2; - buf = Buffer.from(hex, 'hex'); +var curve = exports; - if (natlen === opts.size) { - buf = buf; - } else if (natlen > opts.size) { - buf = BN.trim(buf, natlen); - } else if (natlen < opts.size) { - buf = BN.pad(buf, natlen, opts.size); - } - } else { - hex = this.toString(16, 2); - buf = Buffer.from(hex, 'hex'); - } +curve.base = require('./base'); +curve.short = require('./short'); +curve.mont = require('./mont'); +curve.edwards = require('./edwards'); - if (typeof opts !== 'undefined' && opts.endian === 'little') { - buf = reversebuf(buf); - } +},{"./base":120,"./edwards":121,"./mont":123,"./short":124}],123:[function(require,module,exports){ +'use strict'; - return buf; +var curve = require('../curve'); +var BN = require('bn.js'); +var inherits = require('inherits'); +var Base = curve.base; + +var elliptic = require('../../elliptic'); +var utils = elliptic.utils; + +function MontCurve(conf) { + Base.call(this, 'mont', conf); + + this.a = new BN(conf.a, 16).toRed(this.red); + this.b = new BN(conf.b, 16).toRed(this.red); + this.i4 = new BN(4).toRed(this.red).redInvm(); + this.two = new BN(2).toRed(this.red); + this.a24 = this.i4.redMul(this.a.redAdd(this.two)); +} +inherits(MontCurve, Base); +module.exports = MontCurve; + +MontCurve.prototype.validate = function validate(point) { + var x = point.normalize().x; + var x2 = x.redSqr(); + var rhs = x2.redMul(x).redAdd(x2.redMul(this.a)).redAdd(x); + var y = rhs.redSqrt(); + + return y.redSqr().cmp(rhs) === 0; }; -BN.prototype.toSMBigEndian = function() { - var buf; - if (this.cmp(BN.Zero) === -1) { - buf = this.neg().toBuffer(); - if (buf[0] & 0x80) { - buf = Buffer.concat([Buffer.from([0x80]), buf]); - } else { - buf[0] = buf[0] | 0x80; - } +function Point(curve, x, z) { + Base.BasePoint.call(this, curve, 'projective'); + if (x === null && z === null) { + this.x = this.curve.one; + this.z = this.curve.zero; } else { - buf = this.toBuffer(); - if (buf[0] & 0x80) { - buf = Buffer.concat([Buffer.from([0x00]), buf]); - } + this.x = new BN(x, 16); + this.z = new BN(z, 16); + if (!this.x.red) + this.x = this.x.toRed(this.curve.red); + if (!this.z.red) + this.z = this.z.toRed(this.curve.red); } +} +inherits(Point, Base.BasePoint); - if (buf.length === 1 & buf[0] === 0) { - buf = Buffer.from([]); - } - return buf; +MontCurve.prototype.decodePoint = function decodePoint(bytes, enc) { + return this.point(utils.toArray(bytes, enc), 1); }; -BN.prototype.toSM = function(opts) { - var endian = opts ? opts.endian : 'big'; - var buf = this.toSMBigEndian(); - - if (endian === 'little') { - buf = reversebuf(buf); - } - return buf; +MontCurve.prototype.point = function point(x, z) { + return new Point(this, x, z); }; -/** - * Create a BN from a "ScriptNum": - * This is analogous to the constructor for CScriptNum in bitcoind. Many ops in - * bitcoind's script interpreter use CScriptNum, which is not really a proper - * bignum. Instead, an error is thrown if trying to input a number bigger than - * 4 bytes. We copy that behavior here. A third argument, `size`, is provided to - * extend the hard limit of 4 bytes, as some usages require more than 4 bytes. - */ -BN.fromScriptNumBuffer = function(buf, fRequireMinimal, size) { - var nMaxNumSize = size || 4; - $.checkArgument(buf.length <= nMaxNumSize, new Error('script number overflow')); - if (fRequireMinimal && buf.length > 0) { - // Check that the number is encoded with the minimum possible - // number of bytes. - // - // If the most-significant-byte - excluding the sign bit - is zero - // then we're not minimal. Note how this test also rejects the - // negative-zero encoding, 0x80. - if ((buf[buf.length - 1] & 0x7f) === 0) { - // One exception: if there's more than one byte and the most - // significant bit of the second-most-significant-byte is set - // it would conflict with the sign bit. An example of this case - // is +-255, which encode to 0xff00 and 0xff80 respectively. - // (big-endian). - if (buf.length <= 1 || (buf[buf.length - 2] & 0x80) === 0) { - throw new Error('non-minimally encoded script number'); - } - } - } - return BN.fromSM(buf, { - endian: 'little' - }); +MontCurve.prototype.pointFromJSON = function pointFromJSON(obj) { + return Point.fromJSON(this, obj); }; -/** - * The corollary to the above, with the notable exception that we do not throw - * an error if the output is larger than four bytes. (Which can happen if - * performing a numerical operation that results in an overflow to more than 4 - * bytes). - */ -BN.prototype.toScriptNumBuffer = function() { - return this.toSM({ - endian: 'little' - }); +Point.prototype.precompute = function precompute() { + // No-op }; -BN.trim = function(buf, natlen) { - return buf.slice(natlen - buf.length, buf.length); +Point.prototype._encode = function _encode() { + return this.getX().toArray('be', this.curve.p.byteLength()); }; -BN.pad = function(buf, natlen, size) { - var rbuf = Buffer.alloc(size); - for (var i = 0; i < buf.length; i++) { - rbuf[rbuf.length - 1 - i] = buf[buf.length - 1 - i]; - } - for (i = 0; i < size - natlen; i++) { - rbuf[i] = 0; - } - return rbuf; +Point.fromJSON = function fromJSON(curve, obj) { + return new Point(curve, obj[0], obj[1] || curve.one); }; -module.exports = BN; +Point.prototype.inspect = function inspect() { + if (this.isInfinity()) + return ''; + return ''; +}; -}).call(this,require("buffer").Buffer) -},{"../util/preconditions":208,"bn.js":210,"buffer":52,"lodash":245}],170:[function(require,module,exports){ -(function (Buffer){ -'use strict'; +Point.prototype.isInfinity = function isInfinity() { + // XXX This code assumes that zero is always zero in red + return this.z.cmpn(0) === 0; +}; -var BN = require('./bn'); -var Point = require('./point'); -var Signature = require('./signature'); -var PublicKey = require('../publickey'); -var Random = require('./random'); -var Hash = require('./hash'); -var BufferUtil = require('../util/buffer'); -var _ = require('lodash'); -var $ = require('../util/preconditions'); +Point.prototype.dbl = function dbl() { + // http://hyperelliptic.org/EFD/g1p/auto-montgom-xz.html#doubling-dbl-1987-m-3 + // 2M + 2S + 4A -var ECDSA = function ECDSA(obj) { - if (!(this instanceof ECDSA)) { - return new ECDSA(obj); - } - if (obj) { - this.set(obj); - } + // A = X1 + Z1 + var a = this.x.redAdd(this.z); + // AA = A^2 + var aa = a.redSqr(); + // B = X1 - Z1 + var b = this.x.redSub(this.z); + // BB = B^2 + var bb = b.redSqr(); + // C = AA - BB + var c = aa.redSub(bb); + // X3 = AA * BB + var nx = aa.redMul(bb); + // Z3 = C * (BB + A24 * C) + var nz = c.redMul(bb.redAdd(this.curve.a24.redMul(c))); + return this.curve.point(nx, nz); }; -/* jshint maxcomplexity: 9 */ -ECDSA.prototype.set = function(obj) { - this.hashbuf = obj.hashbuf || this.hashbuf; - this.endian = obj.endian || this.endian; //the endianness of hashbuf - this.privkey = obj.privkey || this.privkey; - this.pubkey = obj.pubkey || (this.privkey ? this.privkey.publicKey : this.pubkey); - this.sig = obj.sig || this.sig; - this.k = obj.k || this.k; - this.verified = obj.verified || this.verified; - return this; +Point.prototype.add = function add() { + throw new Error('Not supported on Montgomery curve'); }; -ECDSA.prototype.privkey2pubkey = function() { - this.pubkey = this.privkey.toPublicKey(); +Point.prototype.diffAdd = function diffAdd(p, diff) { + // http://hyperelliptic.org/EFD/g1p/auto-montgom-xz.html#diffadd-dadd-1987-m-3 + // 4M + 2S + 6A + + // A = X2 + Z2 + var a = this.x.redAdd(this.z); + // B = X2 - Z2 + var b = this.x.redSub(this.z); + // C = X3 + Z3 + var c = p.x.redAdd(p.z); + // D = X3 - Z3 + var d = p.x.redSub(p.z); + // DA = D * A + var da = d.redMul(a); + // CB = C * B + var cb = c.redMul(b); + // X5 = Z1 * (DA + CB)^2 + var nx = diff.z.redMul(da.redAdd(cb).redSqr()); + // Z5 = X1 * (DA - CB)^2 + var nz = diff.x.redMul(da.redISub(cb).redSqr()); + return this.curve.point(nx, nz); }; -ECDSA.prototype.calci = function() { - for (var i = 0; i < 4; i++) { - this.sig.i = i; - var Qprime; - try { - Qprime = this.toPublicKey(); - } catch (e) { - console.error(e); - continue; - } +Point.prototype.mul = function mul(k) { + var t = k.clone(); + var a = this; // (N / 2) * Q + Q + var b = this.curve.point(null, null); // (N / 2) * Q + var c = this; // Q - if (Qprime.point.eq(this.pubkey.point)) { - this.sig.compressed = this.pubkey.compressed; - return this; + for (var bits = []; t.cmpn(0) !== 0; t.iushrn(1)) + bits.push(t.andln(1)); + + for (var i = bits.length - 1; i >= 0; i--) { + if (bits[i] === 0) { + // N * Q + Q = ((N / 2) * Q + Q)) + (N / 2) * Q + a = a.diffAdd(b, c); + // N * Q = 2 * ((N / 2) * Q + Q)) + b = b.dbl(); + } else { + // N * Q = ((N / 2) * Q + Q) + ((N / 2) * Q) + b = a.diffAdd(b, c); + // N * Q + Q = 2 * ((N / 2) * Q + Q) + a = a.dbl(); } } - - this.sig.i = undefined; - throw new Error('Unable to find valid recovery factor'); + return b; }; -ECDSA.fromString = function(str) { - var obj = JSON.parse(str); - return new ECDSA(obj); +Point.prototype.mulAdd = function mulAdd() { + throw new Error('Not supported on Montgomery curve'); }; -ECDSA.prototype.randomK = function() { - var N = Point.getN(); - var k; - do { - k = BN.fromBuffer(Random.getRandomBuffer(32)); - } while (!(k.lt(N) && k.gt(BN.Zero))); - this.k = k; - return this; +Point.prototype.jumlAdd = function jumlAdd() { + throw new Error('Not supported on Montgomery curve'); }; +Point.prototype.eq = function eq(other) { + return this.getX().cmp(other.getX()) === 0; +}; -// https://tools.ietf.org/html/rfc6979#section-3.2 -ECDSA.prototype.deterministicK = function(badrs) { - /* jshint maxstatements: 25 */ - // if r or s were invalid when this function was used in signing, - // we do not want to actually compute r, s here for efficiency, so, - // we can increment badrs. explained at end of RFC 6979 section 3.2 - if (_.isUndefined(badrs)) { - badrs = 0; - } - var v = Buffer.alloc(32); - v.fill(0x01); - var k = Buffer.alloc(32); - k.fill(0x00); - var x = this.privkey.bn.toBuffer({ - size: 32 - }); - var hashbuf = this.endian === 'little' ? BufferUtil.reverse(this.hashbuf) : this.hashbuf - k = Hash.sha256hmac(Buffer.concat([v, Buffer.from([0x00]), x, hashbuf]), k); - v = Hash.sha256hmac(v, k); - k = Hash.sha256hmac(Buffer.concat([v, Buffer.from([0x01]), x, hashbuf]), k); - v = Hash.sha256hmac(v, k); - v = Hash.sha256hmac(v, k); - var T = BN.fromBuffer(v); - var N = Point.getN(); +Point.prototype.normalize = function normalize() { + this.x = this.x.redMul(this.z.redInvm()); + this.z = this.curve.one; + return this; +}; - // also explained in 3.2, we must ensure T is in the proper range (0, N) - for (var i = 0; i < badrs || !(T.lt(N) && T.gt(BN.Zero)); i++) { - k = Hash.sha256hmac(Buffer.concat([v, Buffer.from([0x00])]), k); - v = Hash.sha256hmac(v, k); - v = Hash.sha256hmac(v, k); - T = BN.fromBuffer(v); - } +Point.prototype.getX = function getX() { + // Normalize coordinates + this.normalize(); - this.k = T; - return this; + return this.x.fromRed(); }; -// Information about public key recovery: -// https://bitcointalk.org/index.php?topic=6430.0 -// http://stackoverflow.com/questions/19665491/how-do-i-get-an-ecdsa-public-key-from-just-a-bitcoin-signature-sec1-4-1-6-k -ECDSA.prototype.toPublicKey = function() { - /* jshint maxstatements: 25 */ - var i = this.sig.i; - $.checkArgument(i === 0 || i === 1 || i === 2 || i === 3, new Error('i must be equal to 0, 1, 2, or 3')); +},{"../../elliptic":119,"../curve":122,"bn.js":66,"inherits":153}],124:[function(require,module,exports){ +'use strict'; - var e = BN.fromBuffer(this.hashbuf); - var r = this.sig.r; - var s = this.sig.s; +var curve = require('../curve'); +var elliptic = require('../../elliptic'); +var BN = require('bn.js'); +var inherits = require('inherits'); +var Base = curve.base; - // A set LSB signifies that the y-coordinate is odd - var isYOdd = i & 1; +var assert = elliptic.utils.assert; - // The more significant bit specifies whether we should use the - // first or second candidate key. - var isSecondKey = i >> 1; +function ShortCurve(conf) { + Base.call(this, 'short', conf); - var n = Point.getN(); - var G = Point.getG(); + this.a = new BN(conf.a, 16).toRed(this.red); + this.b = new BN(conf.b, 16).toRed(this.red); + this.tinv = this.two.redInvm(); - // 1.1 Let x = r + jn - var x = isSecondKey ? r.add(n) : r; - var R = Point.fromX(isYOdd, x); + this.zeroA = this.a.fromRed().cmpn(0) === 0; + this.threeA = this.a.fromRed().sub(this.p).cmpn(-3) === 0; - // 1.4 Check that nR is at infinity - var nR = R.mul(n); + // If the curve is endomorphic, precalculate beta and lambda + this.endo = this._getEndomorphism(conf); + this._endoWnafT1 = new Array(4); + this._endoWnafT2 = new Array(4); +} +inherits(ShortCurve, Base); +module.exports = ShortCurve; - if (!nR.isInfinity()) { - throw new Error('nR is not a valid curve point'); +ShortCurve.prototype._getEndomorphism = function _getEndomorphism(conf) { + // No efficient endomorphism + if (!this.zeroA || !this.g || !this.n || this.p.modn(3) !== 1) + return; + + // Compute beta and lambda, that lambda * P = (beta * Px; Py) + var beta; + var lambda; + if (conf.beta) { + beta = new BN(conf.beta, 16).toRed(this.red); + } else { + var betas = this._getEndoRoots(this.p); + // Choose the smallest beta + beta = betas[0].cmp(betas[1]) < 0 ? betas[0] : betas[1]; + beta = beta.toRed(this.red); + } + if (conf.lambda) { + lambda = new BN(conf.lambda, 16); + } else { + // Choose the lambda that is matching selected beta + var lambdas = this._getEndoRoots(this.n); + if (this.g.mul(lambdas[0]).x.cmp(this.g.x.redMul(beta)) === 0) { + lambda = lambdas[0]; + } else { + lambda = lambdas[1]; + assert(this.g.mul(lambda).x.cmp(this.g.x.redMul(beta)) === 0); + } } - // Compute -e from e - var eNeg = e.neg().umod(n); + // Get basis vectors, used for balanced length-two representation + var basis; + if (conf.basis) { + basis = conf.basis.map(function(vec) { + return { + a: new BN(vec.a, 16), + b: new BN(vec.b, 16) + }; + }); + } else { + basis = this._getEndoBasis(lambda); + } - // 1.6.1 Compute Q = r^-1 (sR - eG) - // Q = r^-1 (sR + -eG) - var rInv = r.invm(n); + return { + beta: beta, + lambda: lambda, + basis: basis + }; +}; - //var Q = R.multiplyTwo(s, G, eNeg).mul(rInv); - var Q = R.mul(s).add(G.mul(eNeg)).mul(rInv); +ShortCurve.prototype._getEndoRoots = function _getEndoRoots(num) { + // Find roots of for x^2 + x + 1 in F + // Root = (-1 +- Sqrt(-3)) / 2 + // + var red = num === this.p ? this.red : BN.mont(num); + var tinv = new BN(2).toRed(red).redInvm(); + var ntinv = tinv.redNeg(); - var pubkey = PublicKey.fromPoint(Q, this.sig.compressed); + var s = new BN(3).toRed(red).redNeg().redSqrt().redMul(tinv); - return pubkey; + var l1 = ntinv.redAdd(s).fromRed(); + var l2 = ntinv.redSub(s).fromRed(); + return [ l1, l2 ]; }; -ECDSA.prototype.sigError = function() { - /* jshint maxstatements: 25 */ - if (!BufferUtil.isBuffer(this.hashbuf) || this.hashbuf.length !== 32) { - return 'hashbuf must be a 32 byte buffer'; - } +ShortCurve.prototype._getEndoBasis = function _getEndoBasis(lambda) { + // aprxSqrt >= sqrt(this.n) + var aprxSqrt = this.n.ushrn(Math.floor(this.n.bitLength() / 2)); - var r = this.sig.r; - var s = this.sig.s; - if (!(r.gt(BN.Zero) && r.lt(Point.getN())) || !(s.gt(BN.Zero) && s.lt(Point.getN()))) { - return 'r and s not in range'; - } + // 3.74 + // Run EGCD, until r(L + 1) < aprxSqrt + var u = lambda; + var v = this.n.clone(); + var x1 = new BN(1); + var y1 = new BN(0); + var x2 = new BN(0); + var y2 = new BN(1); - var e = BN.fromBuffer(this.hashbuf, this.endian ? { - endian: this.endian - } : undefined); - var n = Point.getN(); - var sinv = s.invm(n); - var u1 = sinv.mul(e).umod(n); - var u2 = sinv.mul(r).umod(n); + // NOTE: all vectors are roots of: a + b * lambda = 0 (mod n) + var a0; + var b0; + // First vector + var a1; + var b1; + // Second vector + var a2; + var b2; - var p = Point.getG().mulAdd(u1, this.pubkey.point, u2); - if (p.isInfinity()) { - return 'p is infinity'; + var prevR; + var i = 0; + var r; + var x; + while (u.cmpn(0) !== 0) { + var q = v.div(u); + r = v.sub(q.mul(u)); + x = x2.sub(q.mul(x1)); + var y = y2.sub(q.mul(y1)); + + if (!a1 && r.cmp(aprxSqrt) < 0) { + a0 = prevR.neg(); + b0 = x1; + a1 = r.neg(); + b1 = x; + } else if (a1 && ++i === 2) { + break; + } + prevR = r; + + v = u; + u = r; + x2 = x1; + x1 = x; + y2 = y1; + y1 = y; } + a2 = r.neg(); + b2 = x; - if (p.getX().umod(n).cmp(r) !== 0) { - return 'Invalid signature'; - } else { - return false; + var len1 = a1.sqr().add(b1.sqr()); + var len2 = a2.sqr().add(b2.sqr()); + if (len2.cmp(len1) >= 0) { + a2 = a0; + b2 = b0; } -}; -ECDSA.toLowS = function(s) { - //enforce low s - //see BIP 62, "low S values in signatures" - if (s.gt(BN.fromBuffer(Buffer.from('7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0', 'hex')))) { - s = Point.getN().sub(s); + // Normalize signs + if (a1.negative) { + a1 = a1.neg(); + b1 = b1.neg(); } - return s; + if (a2.negative) { + a2 = a2.neg(); + b2 = b2.neg(); + } + + return [ + { a: a1, b: b1 }, + { a: a2, b: b2 } + ]; }; -ECDSA.prototype._findSignature = function(d, e) { - var N = Point.getN(); - var G = Point.getG(); - // try different values of k until r, s are valid - var badrs = 0; - var k, Q, r, s; - do { - if (!this.k || badrs > 0) { - this.deterministicK(badrs); - } - badrs++; - k = this.k; - Q = G.mul(k); - r = Q.x.umod(N); - s = k.invm(N).mul(e.add(d.mul(r))).umod(N); - } while (r.cmp(BN.Zero) <= 0 || s.cmp(BN.Zero) <= 0); +ShortCurve.prototype._endoSplit = function _endoSplit(k) { + var basis = this.endo.basis; + var v1 = basis[0]; + var v2 = basis[1]; - s = ECDSA.toLowS(s); - return { - s: s, - r: r - }; + var c1 = v2.b.mul(k).divRound(this.n); + var c2 = v1.b.neg().mul(k).divRound(this.n); -}; + var p1 = c1.mul(v1.a); + var p2 = c2.mul(v2.a); + var q1 = c1.mul(v1.b); + var q2 = c2.mul(v2.b); -ECDSA.prototype.sign = function() { - var hashbuf = this.hashbuf; - var privkey = this.privkey; - var d = privkey.bn; + // Calculate answer + var k1 = k.sub(p1).sub(p2); + var k2 = q1.add(q2).neg(); + return { k1: k1, k2: k2 }; +}; - $.checkState(hashbuf && privkey && d, new Error('invalid parameters')); - $.checkState(BufferUtil.isBuffer(hashbuf) && hashbuf.length === 32, new Error('hashbuf must be a 32 byte buffer')); +ShortCurve.prototype.pointFromX = function pointFromX(x, odd) { + x = new BN(x, 16); + if (!x.red) + x = x.toRed(this.red); - var e = BN.fromBuffer(hashbuf, this.endian ? { - endian: this.endian - } : undefined); + var y2 = x.redSqr().redMul(x).redIAdd(x.redMul(this.a)).redIAdd(this.b); + var y = y2.redSqrt(); + if (y.redSqr().redSub(y2).cmp(this.zero) !== 0) + throw new Error('invalid point'); - var obj = this._findSignature(d, e); - obj.compressed = this.pubkey.compressed; + // XXX Is there any way to tell if the number is odd without converting it + // to non-red form? + var isOdd = y.fromRed().isOdd(); + if (odd && !isOdd || !odd && isOdd) + y = y.redNeg(); - this.sig = new Signature(obj); - return this; + return this.point(x, y); }; -ECDSA.prototype.signRandomK = function() { - this.randomK(); - return this.sign(); +ShortCurve.prototype.validate = function validate(point) { + if (point.inf) + return true; + + var x = point.x; + var y = point.y; + + var ax = this.a.redMul(x); + var rhs = x.redSqr().redMul(x).redIAdd(ax).redIAdd(this.b); + return y.redSqr().redISub(rhs).cmpn(0) === 0; }; -ECDSA.prototype.toString = function() { - var obj = {}; - if (this.hashbuf) { - obj.hashbuf = this.hashbuf.toString('hex'); - } - if (this.privkey) { - obj.privkey = this.privkey.toString(); - } - if (this.pubkey) { - obj.pubkey = this.pubkey.toString(); - } - if (this.sig) { - obj.sig = this.sig.toString(); +ShortCurve.prototype._endoWnafMulAdd = + function _endoWnafMulAdd(points, coeffs, jacobianResult) { + var npoints = this._endoWnafT1; + var ncoeffs = this._endoWnafT2; + for (var i = 0; i < points.length; i++) { + var split = this._endoSplit(coeffs[i]); + var p = points[i]; + var beta = p._getBeta(); + + if (split.k1.negative) { + split.k1.ineg(); + p = p.neg(true); + } + if (split.k2.negative) { + split.k2.ineg(); + beta = beta.neg(true); + } + + npoints[i * 2] = p; + npoints[i * 2 + 1] = beta; + ncoeffs[i * 2] = split.k1; + ncoeffs[i * 2 + 1] = split.k2; } - if (this.k) { - obj.k = this.k.toString(); + var res = this._wnafMulAdd(1, npoints, ncoeffs, i * 2, jacobianResult); + + // Clean-up references to points and coefficients + for (var j = 0; j < i * 2; j++) { + npoints[j] = null; + ncoeffs[j] = null; } - return JSON.stringify(obj); + return res; }; -ECDSA.prototype.verify = function() { - if (!this.sigError()) { - this.verified = true; +function Point(curve, x, y, isRed) { + Base.BasePoint.call(this, curve, 'affine'); + if (x === null && y === null) { + this.x = null; + this.y = null; + this.inf = true; } else { - this.verified = false; + this.x = new BN(x, 16); + this.y = new BN(y, 16); + // Force redgomery representation when loading from JSON + if (isRed) { + this.x.forceRed(this.curve.red); + this.y.forceRed(this.curve.red); + } + if (!this.x.red) + this.x = this.x.toRed(this.curve.red); + if (!this.y.red) + this.y = this.y.toRed(this.curve.red); + this.inf = false; } - return this; -}; +} +inherits(Point, Base.BasePoint); -ECDSA.sign = function(hashbuf, privkey, endian) { - return ECDSA().set({ - hashbuf: hashbuf, - endian: endian, - privkey: privkey - }).sign().sig; +ShortCurve.prototype.point = function point(x, y, isRed) { + return new Point(this, x, y, isRed); }; -ECDSA.verify = function(hashbuf, sig, pubkey, endian) { - return ECDSA().set({ - hashbuf: hashbuf, - endian: endian, - sig: sig, - pubkey: pubkey - }).verify().verified; +ShortCurve.prototype.pointFromJSON = function pointFromJSON(obj, red) { + return Point.fromJSON(this, obj, red); }; -module.exports = ECDSA; - -}).call(this,require("buffer").Buffer) -},{"../publickey":187,"../util/buffer":206,"../util/preconditions":208,"./bn":169,"./hash":171,"./point":172,"./random":173,"./signature":174,"buffer":52,"lodash":245}],171:[function(require,module,exports){ -(function (Buffer){ -'use strict'; - -var crypto = require('crypto'); -var BufferUtil = require('../util/buffer'); -var $ = require('../util/preconditions'); +Point.prototype._getBeta = function _getBeta() { + if (!this.curve.endo) + return; -var Hash = module.exports; + var pre = this.precomputed; + if (pre && pre.beta) + return pre.beta; -Hash.sha1 = function(buf) { - $.checkArgument(BufferUtil.isBuffer(buf)); - return crypto.createHash('sha1').update(buf).digest(); + var beta = this.curve.point(this.x.redMul(this.curve.endo.beta), this.y); + if (pre) { + var curve = this.curve; + var endoMul = function(p) { + return curve.point(p.x.redMul(curve.endo.beta), p.y); + }; + pre.beta = beta; + beta.precomputed = { + beta: null, + naf: pre.naf && { + wnd: pre.naf.wnd, + points: pre.naf.points.map(endoMul) + }, + doubles: pre.doubles && { + step: pre.doubles.step, + points: pre.doubles.points.map(endoMul) + } + }; + } + return beta; }; -Hash.sha1.blocksize = 512; +Point.prototype.toJSON = function toJSON() { + if (!this.precomputed) + return [ this.x, this.y ]; -Hash.sha256 = function(buf) { - $.checkArgument(BufferUtil.isBuffer(buf)); - return crypto.createHash('sha256').update(buf).digest(); + return [ this.x, this.y, this.precomputed && { + doubles: this.precomputed.doubles && { + step: this.precomputed.doubles.step, + points: this.precomputed.doubles.points.slice(1) + }, + naf: this.precomputed.naf && { + wnd: this.precomputed.naf.wnd, + points: this.precomputed.naf.points.slice(1) + } + } ]; }; -Hash.sha256.blocksize = 512; +Point.fromJSON = function fromJSON(curve, obj, red) { + if (typeof obj === 'string') + obj = JSON.parse(obj); + var res = curve.point(obj[0], obj[1], red); + if (!obj[2]) + return res; -Hash.sha256sha256 = function(buf) { - $.checkArgument(BufferUtil.isBuffer(buf)); - return Hash.sha256(Hash.sha256(buf)); -}; + function obj2point(obj) { + return curve.point(obj[0], obj[1], red); + } -Hash.ripemd160 = function(buf) { - $.checkArgument(BufferUtil.isBuffer(buf)); - return crypto.createHash('ripemd160').update(buf).digest(); + var pre = obj[2]; + res.precomputed = { + beta: null, + doubles: pre.doubles && { + step: pre.doubles.step, + points: [ res ].concat(pre.doubles.points.map(obj2point)) + }, + naf: pre.naf && { + wnd: pre.naf.wnd, + points: [ res ].concat(pre.naf.points.map(obj2point)) + } + }; + return res; }; -Hash.sha256ripemd160 = function(buf) { - $.checkArgument(BufferUtil.isBuffer(buf)); - return Hash.ripemd160(Hash.sha256(buf)); +Point.prototype.inspect = function inspect() { + if (this.isInfinity()) + return ''; + return ''; }; -Hash.sha512 = function(buf) { - $.checkArgument(BufferUtil.isBuffer(buf)); - return crypto.createHash('sha512').update(buf).digest(); +Point.prototype.isInfinity = function isInfinity() { + return this.inf; }; -Hash.sha512.blocksize = 1024; +Point.prototype.add = function add(p) { + // O + P = P + if (this.inf) + return p; -Hash.hmac = function(hashf, data, key) { - //http://en.wikipedia.org/wiki/Hash-based_message_authentication_code - //http://tools.ietf.org/html/rfc4868#section-2 - $.checkArgument(BufferUtil.isBuffer(data)); - $.checkArgument(BufferUtil.isBuffer(key)); - $.checkArgument(hashf.blocksize); + // P + O = P + if (p.inf) + return this; - var blocksize = hashf.blocksize / 8; + // P + P = 2P + if (this.eq(p)) + return this.dbl(); - if (key.length > blocksize) { - key = hashf(key); - } else if (key < blocksize) { - var fill = Buffer.alloc(blocksize); - fill.fill(0); - key.copy(fill); - key = fill; - } + // P + (-P) = O + if (this.neg().eq(p)) + return this.curve.point(null, null); - var o_key = Buffer.alloc(blocksize); - o_key.fill(0x5c); + // P + Q = O + if (this.x.cmp(p.x) === 0) + return this.curve.point(null, null); - var i_key = Buffer.alloc(blocksize); - i_key.fill(0x36); + var c = this.y.redSub(p.y); + if (c.cmpn(0) !== 0) + c = c.redMul(this.x.redSub(p.x).redInvm()); + var nx = c.redSqr().redISub(this.x).redISub(p.x); + var ny = c.redMul(this.x.redSub(nx)).redISub(this.y); + return this.curve.point(nx, ny); +}; - var o_key_pad = Buffer.alloc(blocksize); - var i_key_pad = Buffer.alloc(blocksize); - for (var i = 0; i < blocksize; i++) { - o_key_pad[i] = o_key[i] ^ key[i]; - i_key_pad[i] = i_key[i] ^ key[i]; - } - - return hashf(Buffer.concat([o_key_pad, hashf(Buffer.concat([i_key_pad, data]))])); -}; - -Hash.sha256hmac = function(data, key) { - return Hash.hmac(Hash.sha256, data, key); -}; - -Hash.sha512hmac = function(data, key) { - return Hash.hmac(Hash.sha512, data, key); -}; - -}).call(this,require("buffer").Buffer) -},{"../util/buffer":206,"../util/preconditions":208,"buffer":52,"crypto":60}],172:[function(require,module,exports){ -(function (Buffer){ -'use strict'; - -var BN = require('./bn'); -var BufferUtil = require('../util/buffer'); +Point.prototype.dbl = function dbl() { + if (this.inf) + return this; -var EC = require('elliptic').ec; -var ec = new EC('secp256k1'); -var ecPoint = ec.curve.point.bind(ec.curve); -var ecPointFromX = ec.curve.pointFromX.bind(ec.curve); + // 2P = O + var ys1 = this.y.redAdd(this.y); + if (ys1.cmpn(0) === 0) + return this.curve.point(null, null); -/** - * - * Instantiate a valid secp256k1 Point from the X and Y coordinates. - * - * @param {BN|String} x - The X coordinate - * @param {BN|String} y - The Y coordinate - * @link https://github.com/indutny/elliptic - * @augments elliptic.curve.point - * @throws {Error} A validation error if exists - * @returns {Point} An instance of Point - * @constructor - */ -var Point = function Point(x, y, isRed) { - try { - var point = ecPoint(x, y, isRed); - } catch (e) { - throw new Error('Invalid Point'); - } - point.validate(); - return point; -}; + var a = this.curve.a; -Point.prototype = Object.getPrototypeOf(ec.curve.point()); + var x2 = this.x.redSqr(); + var dyinv = ys1.redInvm(); + var c = x2.redAdd(x2).redIAdd(x2).redIAdd(a).redMul(dyinv); -/** - * - * Instantiate a valid secp256k1 Point from only the X coordinate - * - * @param {boolean} odd - If the Y coordinate is odd - * @param {BN|String} x - The X coordinate - * @throws {Error} A validation error if exists - * @returns {Point} An instance of Point - */ -Point.fromX = function fromX(odd, x){ - try { - var point = ecPointFromX(x, odd); - } catch (e) { - throw new Error('Invalid X'); - } - point.validate(); - return point; + var nx = c.redSqr().redISub(this.x.redAdd(this.x)); + var ny = c.redMul(this.x.redSub(nx)).redISub(this.y); + return this.curve.point(nx, ny); }; -/** - * - * Will return a secp256k1 ECDSA base point. - * - * @link https://en.bitcoin.it/wiki/Secp256k1 - * @returns {Point} An instance of the base point. - */ -Point.getG = function getG() { - return ec.curve.g; +Point.prototype.getX = function getX() { + return this.x.fromRed(); }; -/** - * - * Will return the max of range of valid private keys as governed by the secp256k1 ECDSA standard. - * - * @link https://en.bitcoin.it/wiki/Private_key#Range_of_valid_ECDSA_private_keys - * @returns {BN} A BN instance of the number of points on the curve - */ -Point.getN = function getN() { - return new BN(ec.curve.n.toArray()); +Point.prototype.getY = function getY() { + return this.y.fromRed(); }; -Point.prototype._getX = Point.prototype.getX; +Point.prototype.mul = function mul(k) { + k = new BN(k, 16); -/** - * - * Will return the X coordinate of the Point - * - * @returns {BN} A BN instance of the X coordinate - */ -Point.prototype.getX = function getX() { - return new BN(this._getX().toArray()); + if (this._hasDoubles(k)) + return this.curve._fixedNafMul(this, k); + else if (this.curve.endo) + return this.curve._endoWnafMulAdd([ this ], [ k ]); + else + return this.curve._wnafMul(this, k); }; -Point.prototype._getY = Point.prototype.getY; - -/** - * - * Will return the Y coordinate of the Point - * - * @returns {BN} A BN instance of the Y coordinate - */ -Point.prototype.getY = function getY() { - return new BN(this._getY().toArray()); +Point.prototype.mulAdd = function mulAdd(k1, p2, k2) { + var points = [ this, p2 ]; + var coeffs = [ k1, k2 ]; + if (this.curve.endo) + return this.curve._endoWnafMulAdd(points, coeffs); + else + return this.curve._wnafMulAdd(1, points, coeffs, 2); }; -/** - * - * Will determine if the point is valid - * - * @link https://www.iacr.org/archive/pkc2003/25670211/25670211.pdf - * @param {Point} An instance of Point - * @throws {Error} A validation error if exists - * @returns {Point} An instance of the same Point - */ -Point.prototype.validate = function validate() { - - if (this.isInfinity()){ - throw new Error('Point cannot be equal to Infinity'); - } - - var p2; - try { - p2 = ecPointFromX(this.getX(), this.getY().isOdd()); - } catch (e) { - throw new Error('Point does not lie on the curve'); - } +Point.prototype.jmulAdd = function jmulAdd(k1, p2, k2) { + var points = [ this, p2 ]; + var coeffs = [ k1, k2 ]; + if (this.curve.endo) + return this.curve._endoWnafMulAdd(points, coeffs, true); + else + return this.curve._wnafMulAdd(1, points, coeffs, 2, true); +}; - if (p2.y.cmp(this.y) !== 0) { - throw new Error('Invalid y value for curve.'); - } +Point.prototype.eq = function eq(p) { + return this === p || + this.inf === p.inf && + (this.inf || this.x.cmp(p.x) === 0 && this.y.cmp(p.y) === 0); +}; +Point.prototype.neg = function neg(_precompute) { + if (this.inf) + return this; - //todo: needs test case - if (!(this.mul(Point.getN()).isInfinity())) { - throw new Error('Point times N must be infinity'); + var res = this.curve.point(this.x, this.y.redNeg()); + if (_precompute && this.precomputed) { + var pre = this.precomputed; + var negate = function(p) { + return p.neg(); + }; + res.precomputed = { + naf: pre.naf && { + wnd: pre.naf.wnd, + points: pre.naf.points.map(negate) + }, + doubles: pre.doubles && { + step: pre.doubles.step, + points: pre.doubles.points.map(negate) + } + }; } + return res; +}; - return this; +Point.prototype.toJ = function toJ() { + if (this.inf) + return this.curve.jpoint(null, null, null); + var res = this.curve.jpoint(this.x, this.y, this.curve.one); + return res; }; -Point.pointToCompressed = function pointToCompressed(point) { - var xbuf = point.getX().toBuffer({size: 32}); - var ybuf = point.getY().toBuffer({size: 32}); - - var prefix; - var odd = ybuf[ybuf.length - 1] % 2; - if (odd) { - prefix = Buffer.from([0x03]); +function JPoint(curve, x, y, z) { + Base.BasePoint.call(this, curve, 'jacobian'); + if (x === null && y === null && z === null) { + this.x = this.curve.one; + this.y = this.curve.one; + this.z = new BN(0); } else { - prefix = Buffer.from([0x02]); + this.x = new BN(x, 16); + this.y = new BN(y, 16); + this.z = new BN(z, 16); } - return BufferUtil.concat([prefix, xbuf]); -}; + if (!this.x.red) + this.x = this.x.toRed(this.curve.red); + if (!this.y.red) + this.y = this.y.toRed(this.curve.red); + if (!this.z.red) + this.z = this.z.toRed(this.curve.red); -module.exports = Point; + this.zOne = this.z === this.curve.one; +} +inherits(JPoint, Base.BasePoint); -}).call(this,require("buffer").Buffer) -},{"../util/buffer":206,"./bn":169,"buffer":52,"elliptic":214}],173:[function(require,module,exports){ -(function (process,Buffer){ -'use strict'; +ShortCurve.prototype.jpoint = function jpoint(x, y, z) { + return new JPoint(this, x, y, z); +}; -function Random() { -} +JPoint.prototype.toP = function toP() { + if (this.isInfinity()) + return this.curve.point(null, null); -/* secure random bytes that sometimes throws an error due to lack of entropy */ -Random.getRandomBuffer = function(size) { - if (process.browser) - return Random.getRandomBufferBrowser(size); - else - return Random.getRandomBufferNode(size); + var zinv = this.z.redInvm(); + var zinv2 = zinv.redSqr(); + var ax = this.x.redMul(zinv2); + var ay = this.y.redMul(zinv2).redMul(zinv); + + return this.curve.point(ax, ay); }; -Random.getRandomBufferNode = function(size) { - var crypto = require('crypto'); - return crypto.randomBytes(size); +JPoint.prototype.neg = function neg() { + return this.curve.jpoint(this.x, this.y.redNeg(), this.z); }; -Random.getRandomBufferBrowser = function(size) { - if (!window.crypto && !window.msCrypto) - throw new Error('window.crypto not available'); +JPoint.prototype.add = function add(p) { + // O + P = P + if (this.isInfinity()) + return p; - if (window.crypto && window.crypto.getRandomValues) - var crypto = window.crypto; - else if (window.msCrypto && window.msCrypto.getRandomValues) //internet explorer - var crypto = window.msCrypto; - else - throw new Error('window.crypto.getRandomValues not available'); + // P + O = P + if (p.isInfinity()) + return this; - var bbuf = new Uint8Array(size); - crypto.getRandomValues(bbuf); - var buf = Buffer.from(bbuf); + // 12M + 4S + 7A + var pz2 = p.z.redSqr(); + var z2 = this.z.redSqr(); + var u1 = this.x.redMul(pz2); + var u2 = p.x.redMul(z2); + var s1 = this.y.redMul(pz2.redMul(p.z)); + var s2 = p.y.redMul(z2.redMul(this.z)); - return buf; -}; + var h = u1.redSub(u2); + var r = s1.redSub(s2); + if (h.cmpn(0) === 0) { + if (r.cmpn(0) !== 0) + return this.curve.jpoint(null, null, null); + else + return this.dbl(); + } -/* insecure random bytes, but it never fails */ -Random.getPseudoRandomBuffer = function(size) { - var b32 = 0x100000000; - var b = Buffer.alloc(size); - var r; + var h2 = h.redSqr(); + var h3 = h2.redMul(h); + var v = u1.redMul(h2); - for (var i = 0; i <= size; i++) { - var j = Math.floor(i / 4); - var k = i - j * 4; - if (k === 0) { - r = Math.random() * b32; - b[i] = r & 0xff; - } else { - b[i] = (r = r >>> 8) & 0xff; - } - } + var nx = r.redSqr().redIAdd(h3).redISub(v).redISub(v); + var ny = r.redMul(v.redISub(nx)).redISub(s1.redMul(h3)); + var nz = this.z.redMul(p.z).redMul(h); - return b; + return this.curve.jpoint(nx, ny, nz); }; -module.exports = Random; +JPoint.prototype.mixedAdd = function mixedAdd(p) { + // O + P = P + if (this.isInfinity()) + return p.toJ(); -}).call(this,require('_process'),require("buffer").Buffer) -},{"_process":122,"buffer":52,"crypto":60}],174:[function(require,module,exports){ -(function (Buffer){ -'use strict'; + // P + O = P + if (p.isInfinity()) + return this; -var BN = require('./bn'); -var _ = require('lodash'); -var $ = require('../util/preconditions'); -var BufferUtil = require('../util/buffer'); -var JSUtil = require('../util/js'); + // 8M + 3S + 7A + var z2 = this.z.redSqr(); + var u1 = this.x; + var u2 = p.x.redMul(z2); + var s1 = this.y; + var s2 = p.y.redMul(z2).redMul(this.z); -var Signature = function Signature(r, s) { - if (!(this instanceof Signature)) { - return new Signature(r, s); - } - if (r instanceof BN) { - this.set({ - r: r, - s: s - }); - } else if (r) { - var obj = r; - this.set(obj); + var h = u1.redSub(u2); + var r = s1.redSub(s2); + if (h.cmpn(0) === 0) { + if (r.cmpn(0) !== 0) + return this.curve.jpoint(null, null, null); + else + return this.dbl(); } -}; -/* jshint maxcomplexity: 7 */ -Signature.prototype.set = function(obj) { - this.r = obj.r || this.r || undefined; - this.s = obj.s || this.s || undefined; + var h2 = h.redSqr(); + var h3 = h2.redMul(h); + var v = u1.redMul(h2); - this.i = typeof obj.i !== 'undefined' ? obj.i : this.i; //public key recovery parameter in range [0, 3] - this.compressed = typeof obj.compressed !== 'undefined' ? - obj.compressed : this.compressed; //whether the recovered pubkey is compressed - this.nhashtype = obj.nhashtype || this.nhashtype || undefined; - return this; -}; + var nx = r.redSqr().redIAdd(h3).redISub(v).redISub(v); + var ny = r.redMul(v.redISub(nx)).redISub(s1.redMul(h3)); + var nz = this.z.redMul(h); -Signature.fromCompact = function(buf) { - $.checkArgument(BufferUtil.isBuffer(buf), 'Argument is expected to be a Buffer'); + return this.curve.jpoint(nx, ny, nz); +}; - var sig = new Signature(); +JPoint.prototype.dblp = function dblp(pow) { + if (pow === 0) + return this; + if (this.isInfinity()) + return this; + if (!pow) + return this.dbl(); - var compressed = true; - var i = buf.slice(0, 1)[0] - 27 - 4; - if (i < 0) { - compressed = false; - i = i + 4; + if (this.curve.zeroA || this.curve.threeA) { + var r = this; + for (var i = 0; i < pow; i++) + r = r.dbl(); + return r; } - var b2 = buf.slice(1, 33); - var b3 = buf.slice(33, 65); - - $.checkArgument(i === 0 || i === 1 || i === 2 || i === 3, new Error('i must be 0, 1, 2, or 3')); - $.checkArgument(b2.length === 32, new Error('r must be 32 bytes')); - $.checkArgument(b3.length === 32, new Error('s must be 32 bytes')); + // 1M + 2S + 1A + N * (4S + 5M + 8A) + // N = 1 => 6M + 6S + 9A + var a = this.curve.a; + var tinv = this.curve.tinv; - sig.compressed = compressed; - sig.i = i; - sig.r = BN.fromBuffer(b2); - sig.s = BN.fromBuffer(b3); + var jx = this.x; + var jy = this.y; + var jz = this.z; + var jz4 = jz.redSqr().redSqr(); - return sig; -}; + // Reuse results + var jyd = jy.redAdd(jy); + for (var i = 0; i < pow; i++) { + var jx2 = jx.redSqr(); + var jyd2 = jyd.redSqr(); + var jyd4 = jyd2.redSqr(); + var c = jx2.redAdd(jx2).redIAdd(jx2).redIAdd(a.redMul(jz4)); -Signature.fromDER = Signature.fromBuffer = function(buf, strict) { - var obj = Signature.parseDER(buf, strict); - var sig = new Signature(); + var t1 = jx.redMul(jyd2); + var nx = c.redSqr().redISub(t1.redAdd(t1)); + var t2 = t1.redISub(nx); + var dny = c.redMul(t2); + dny = dny.redIAdd(dny).redISub(jyd4); + var nz = jyd.redMul(jz); + if (i + 1 < pow) + jz4 = jz4.redMul(jyd4); - sig.r = obj.r; - sig.s = obj.s; + jx = nx; + jz = nz; + jyd = dny; + } - return sig; + return this.curve.jpoint(jx, jyd.redMul(tinv), jz); }; -// The format used in a tx -Signature.fromTxFormat = function(buf) { - var nhashtype = buf.readUInt8(buf.length - 1); - var derbuf = buf.slice(0, buf.length - 1); - var sig = new Signature.fromDER(derbuf, false); - sig.nhashtype = nhashtype; - return sig; -}; +JPoint.prototype.dbl = function dbl() { + if (this.isInfinity()) + return this; -Signature.fromString = function(str) { - var buf = Buffer.from(str, 'hex'); - return Signature.fromDER(buf); + if (this.curve.zeroA) + return this._zeroDbl(); + else if (this.curve.threeA) + return this._threeDbl(); + else + return this._dbl(); }; +JPoint.prototype._zeroDbl = function _zeroDbl() { + var nx; + var ny; + var nz; + // Z = 1 + if (this.zOne) { + // hyperelliptic.org/EFD/g1p/auto-shortw-jacobian-0.html + // #doubling-mdbl-2007-bl + // 1M + 5S + 14A -/** - * In order to mimic the non-strict DER encoding of OpenSSL, set strict = false. - */ -Signature.parseDER = function(buf, strict) { - $.checkArgument(BufferUtil.isBuffer(buf), new Error('DER formatted signature should be a buffer')); - if (_.isUndefined(strict)) { - strict = true; - } - - var header = buf[0]; - $.checkArgument(header === 0x30, new Error('Header byte should be 0x30')); + // XX = X1^2 + var xx = this.x.redSqr(); + // YY = Y1^2 + var yy = this.y.redSqr(); + // YYYY = YY^2 + var yyyy = yy.redSqr(); + // S = 2 * ((X1 + YY)^2 - XX - YYYY) + var s = this.x.redAdd(yy).redSqr().redISub(xx).redISub(yyyy); + s = s.redIAdd(s); + // M = 3 * XX + a; a = 0 + var m = xx.redAdd(xx).redIAdd(xx); + // T = M ^ 2 - 2*S + var t = m.redSqr().redISub(s).redISub(s); - var length = buf[1]; - var buflength = buf.slice(2).length; - $.checkArgument(!strict || length === buflength, new Error('Length byte should length of what follows')); + // 8 * YYYY + var yyyy8 = yyyy.redIAdd(yyyy); + yyyy8 = yyyy8.redIAdd(yyyy8); + yyyy8 = yyyy8.redIAdd(yyyy8); - length = length < buflength ? length : buflength; + // X3 = T + nx = t; + // Y3 = M * (S - T) - 8 * YYYY + ny = m.redMul(s.redISub(t)).redISub(yyyy8); + // Z3 = 2*Y1 + nz = this.y.redAdd(this.y); + } else { + // hyperelliptic.org/EFD/g1p/auto-shortw-jacobian-0.html + // #doubling-dbl-2009-l + // 2M + 5S + 13A - var rheader = buf[2 + 0]; - $.checkArgument(rheader === 0x02, new Error('Integer byte for r should be 0x02')); - - var rlength = buf[2 + 1]; - var rbuf = buf.slice(2 + 2, 2 + 2 + rlength); - var r = BN.fromBuffer(rbuf); - var rneg = buf[2 + 1 + 1] === 0x00 ? true : false; - $.checkArgument(rlength === rbuf.length, new Error('Length of r incorrect')); - - var sheader = buf[2 + 2 + rlength + 0]; - $.checkArgument(sheader === 0x02, new Error('Integer byte for s should be 0x02')); - - var slength = buf[2 + 2 + rlength + 1]; - var sbuf = buf.slice(2 + 2 + rlength + 2, 2 + 2 + rlength + 2 + slength); - var s = BN.fromBuffer(sbuf); - var sneg = buf[2 + 2 + rlength + 2 + 2] === 0x00 ? true : false; - $.checkArgument(slength === sbuf.length, new Error('Length of s incorrect')); + // A = X1^2 + var a = this.x.redSqr(); + // B = Y1^2 + var b = this.y.redSqr(); + // C = B^2 + var c = b.redSqr(); + // D = 2 * ((X1 + B)^2 - A - C) + var d = this.x.redAdd(b).redSqr().redISub(a).redISub(c); + d = d.redIAdd(d); + // E = 3 * A + var e = a.redAdd(a).redIAdd(a); + // F = E^2 + var f = e.redSqr(); - var sumlength = 2 + 2 + rlength + 2 + slength; - $.checkArgument(length === sumlength - 2, new Error('Length of signature incorrect')); + // 8 * C + var c8 = c.redIAdd(c); + c8 = c8.redIAdd(c8); + c8 = c8.redIAdd(c8); - var obj = { - header: header, - length: length, - rheader: rheader, - rlength: rlength, - rneg: rneg, - rbuf: rbuf, - r: r, - sheader: sheader, - slength: slength, - sneg: sneg, - sbuf: sbuf, - s: s - }; + // X3 = F - 2 * D + nx = f.redISub(d).redISub(d); + // Y3 = E * (D - X3) - 8 * C + ny = e.redMul(d.redISub(nx)).redISub(c8); + // Z3 = 2 * Y1 * Z1 + nz = this.y.redMul(this.z); + nz = nz.redIAdd(nz); + } - return obj; + return this.curve.jpoint(nx, ny, nz); }; +JPoint.prototype._threeDbl = function _threeDbl() { + var nx; + var ny; + var nz; + // Z = 1 + if (this.zOne) { + // hyperelliptic.org/EFD/g1p/auto-shortw-jacobian-3.html + // #doubling-mdbl-2007-bl + // 1M + 5S + 15A -Signature.prototype.toCompact = function(i, compressed) { - i = typeof i === 'number' ? i : this.i; - compressed = typeof compressed === 'boolean' ? compressed : this.compressed; + // XX = X1^2 + var xx = this.x.redSqr(); + // YY = Y1^2 + var yy = this.y.redSqr(); + // YYYY = YY^2 + var yyyy = yy.redSqr(); + // S = 2 * ((X1 + YY)^2 - XX - YYYY) + var s = this.x.redAdd(yy).redSqr().redISub(xx).redISub(yyyy); + s = s.redIAdd(s); + // M = 3 * XX + a + var m = xx.redAdd(xx).redIAdd(xx).redIAdd(this.curve.a); + // T = M^2 - 2 * S + var t = m.redSqr().redISub(s).redISub(s); + // X3 = T + nx = t; + // Y3 = M * (S - T) - 8 * YYYY + var yyyy8 = yyyy.redIAdd(yyyy); + yyyy8 = yyyy8.redIAdd(yyyy8); + yyyy8 = yyyy8.redIAdd(yyyy8); + ny = m.redMul(s.redISub(t)).redISub(yyyy8); + // Z3 = 2 * Y1 + nz = this.y.redAdd(this.y); + } else { + // hyperelliptic.org/EFD/g1p/auto-shortw-jacobian-3.html#doubling-dbl-2001-b + // 3M + 5S - if (!(i === 0 || i === 1 || i === 2 || i === 3)) { - throw new Error('i must be equal to 0, 1, 2, or 3'); + // delta = Z1^2 + var delta = this.z.redSqr(); + // gamma = Y1^2 + var gamma = this.y.redSqr(); + // beta = X1 * gamma + var beta = this.x.redMul(gamma); + // alpha = 3 * (X1 - delta) * (X1 + delta) + var alpha = this.x.redSub(delta).redMul(this.x.redAdd(delta)); + alpha = alpha.redAdd(alpha).redIAdd(alpha); + // X3 = alpha^2 - 8 * beta + var beta4 = beta.redIAdd(beta); + beta4 = beta4.redIAdd(beta4); + var beta8 = beta4.redAdd(beta4); + nx = alpha.redSqr().redISub(beta8); + // Z3 = (Y1 + Z1)^2 - gamma - delta + nz = this.y.redAdd(this.z).redSqr().redISub(gamma).redISub(delta); + // Y3 = alpha * (4 * beta - X3) - 8 * gamma^2 + var ggamma8 = gamma.redSqr(); + ggamma8 = ggamma8.redIAdd(ggamma8); + ggamma8 = ggamma8.redIAdd(ggamma8); + ggamma8 = ggamma8.redIAdd(ggamma8); + ny = alpha.redMul(beta4.redISub(nx)).redISub(ggamma8); } - var val = i + 27 + 4; - if (compressed === false) { - val = val - 4; - } - var b1 = Buffer.from([val]); - var b2 = this.r.toBuffer({ - size: 32 - }); - var b3 = this.s.toBuffer({ - size: 32 - }); - return Buffer.concat([b1, b2, b3]); + return this.curve.jpoint(nx, ny, nz); }; -Signature.prototype.toBuffer = Signature.prototype.toDER = function() { - var rnbuf = this.r.toBuffer(); - var snbuf = this.s.toBuffer(); +JPoint.prototype._dbl = function _dbl() { + var a = this.curve.a; - var rneg = rnbuf[0] & 0x80 ? true : false; - var sneg = snbuf[0] & 0x80 ? true : false; + // 4M + 6S + 10A + var jx = this.x; + var jy = this.y; + var jz = this.z; + var jz4 = jz.redSqr().redSqr(); - var rbuf = rneg ? Buffer.concat([Buffer.from([0x00]), rnbuf]) : rnbuf; - var sbuf = sneg ? Buffer.concat([Buffer.from([0x00]), snbuf]) : snbuf; + var jx2 = jx.redSqr(); + var jy2 = jy.redSqr(); - var rlength = rbuf.length; - var slength = sbuf.length; - var length = 2 + rlength + 2 + slength; - var rheader = 0x02; - var sheader = 0x02; - var header = 0x30; + var c = jx2.redAdd(jx2).redIAdd(jx2).redIAdd(a.redMul(jz4)); - var der = Buffer.concat([Buffer.from([header, length, rheader, rlength]), rbuf, Buffer.from([sheader, slength]), sbuf]); - return der; -}; + var jxd4 = jx.redAdd(jx); + jxd4 = jxd4.redIAdd(jxd4); + var t1 = jxd4.redMul(jy2); + var nx = c.redSqr().redISub(t1.redAdd(t1)); + var t2 = t1.redISub(nx); -Signature.prototype.toString = function() { - var buf = this.toDER(); - return buf.toString('hex'); + var jyd8 = jy2.redSqr(); + jyd8 = jyd8.redIAdd(jyd8); + jyd8 = jyd8.redIAdd(jyd8); + jyd8 = jyd8.redIAdd(jyd8); + var ny = c.redMul(t2).redISub(jyd8); + var nz = jy.redAdd(jy).redMul(jz); + + return this.curve.jpoint(nx, ny, nz); }; -/** - * This function is translated from bitcoind's IsDERSignature and is used in - * the script interpreter. This "DER" format actually includes an extra byte, - * the nhashtype, at the end. It is really the tx format, not DER format. - * - * A canonical signature exists of: [30] [total len] [02] [len R] [R] [02] [len S] [S] [hashtype] - * Where R and S are not negative (their first byte has its highest bit not set), and not - * excessively padded (do not start with a 0 byte, unless an otherwise negative number follows, - * in which case a single 0 byte is necessary and even required). - * - * See https://bitcointalk.org/index.php?topic=8392.msg127623#msg127623 - */ -Signature.isTxDER = function(buf) { - if (buf.length < 9) { - // Non-canonical signature: too short - return false; - } - if (buf.length > 73) { - // Non-canonical signature: too long - return false; - } - if (buf[0] !== 0x30) { - // Non-canonical signature: wrong type - return false; - } - if (buf[1] !== buf.length - 3) { - // Non-canonical signature: wrong length marker - return false; - } - var nLenR = buf[3]; - if (5 + nLenR >= buf.length) { - // Non-canonical signature: S length misplaced - return false; - } - var nLenS = buf[5 + nLenR]; - if ((nLenR + nLenS + 7) !== buf.length) { - // Non-canonical signature: R+S length mismatch - return false; - } +JPoint.prototype.trpl = function trpl() { + if (!this.curve.zeroA) + return this.dbl().add(this); - var R = buf.slice(4); - if (buf[4 - 2] !== 0x02) { - // Non-canonical signature: R value type mismatch - return false; - } - if (nLenR === 0) { - // Non-canonical signature: R length is zero - return false; - } - if (R[0] & 0x80) { - // Non-canonical signature: R value negative - return false; - } - if (nLenR > 1 && (R[0] === 0x00) && !(R[1] & 0x80)) { - // Non-canonical signature: R value excessively padded - return false; - } + // hyperelliptic.org/EFD/g1p/auto-shortw-jacobian-0.html#tripling-tpl-2007-bl + // 5M + 10S + ... - var S = buf.slice(6 + nLenR); - if (buf[6 + nLenR - 2] !== 0x02) { - // Non-canonical signature: S value type mismatch - return false; - } - if (nLenS === 0) { - // Non-canonical signature: S length is zero - return false; - } - if (S[0] & 0x80) { - // Non-canonical signature: S value negative - return false; - } - if (nLenS > 1 && (S[0] === 0x00) && !(S[1] & 0x80)) { - // Non-canonical signature: S value excessively padded - return false; - } - return true; -}; + // XX = X1^2 + var xx = this.x.redSqr(); + // YY = Y1^2 + var yy = this.y.redSqr(); + // ZZ = Z1^2 + var zz = this.z.redSqr(); + // YYYY = YY^2 + var yyyy = yy.redSqr(); + // M = 3 * XX + a * ZZ2; a = 0 + var m = xx.redAdd(xx).redIAdd(xx); + // MM = M^2 + var mm = m.redSqr(); + // E = 6 * ((X1 + YY)^2 - XX - YYYY) - MM + var e = this.x.redAdd(yy).redSqr().redISub(xx).redISub(yyyy); + e = e.redIAdd(e); + e = e.redAdd(e).redIAdd(e); + e = e.redISub(mm); + // EE = E^2 + var ee = e.redSqr(); + // T = 16*YYYY + var t = yyyy.redIAdd(yyyy); + t = t.redIAdd(t); + t = t.redIAdd(t); + t = t.redIAdd(t); + // U = (M + E)^2 - MM - EE - T + var u = m.redIAdd(e).redSqr().redISub(mm).redISub(ee).redISub(t); + // X3 = 4 * (X1 * EE - 4 * YY * U) + var yyu4 = yy.redMul(u); + yyu4 = yyu4.redIAdd(yyu4); + yyu4 = yyu4.redIAdd(yyu4); + var nx = this.x.redMul(ee).redISub(yyu4); + nx = nx.redIAdd(nx); + nx = nx.redIAdd(nx); + // Y3 = 8 * Y1 * (U * (T - U) - E * EE) + var ny = this.y.redMul(u.redMul(t.redISub(u)).redISub(e.redMul(ee))); + ny = ny.redIAdd(ny); + ny = ny.redIAdd(ny); + ny = ny.redIAdd(ny); + // Z3 = (Z1 + E)^2 - ZZ - EE + var nz = this.z.redAdd(e).redSqr().redISub(zz).redISub(ee); -/** - * Compares to bitcoind's IsLowDERSignature - * See also ECDSA signature algorithm which enforces this. - * See also BIP 62, "low S values in signatures" - */ -Signature.prototype.hasLowS = function() { - if (this.s.lt(new BN(1)) || - this.s.gt(new BN('7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0', 'hex'))) { - return false; - } - return true; + return this.curve.jpoint(nx, ny, nz); }; -/** - * @returns true if the nhashtype is exactly equal to one of the standard options or combinations thereof. - * Translated from bitcoind's IsDefinedHashtypeSignature - */ -Signature.prototype.hasDefinedHashtype = function() { - if (!JSUtil.isNaturalNumber(this.nhashtype)) { - return false; - } - // accept with or without Signature.SIGHASH_ANYONECANPAY by ignoring the bit - var temp = this.nhashtype & ~Signature.SIGHASH_ANYONECANPAY; - if (temp < Signature.SIGHASH_ALL || temp > Signature.SIGHASH_SINGLE) { - return false; - } - return true; -}; +JPoint.prototype.mul = function mul(k, kbase) { + k = new BN(k, kbase); -Signature.prototype.toTxFormat = function() { - var derbuf = this.toDER(); - var buf = Buffer.alloc(1); - buf.writeUInt8(this.nhashtype, 0); - return Buffer.concat([derbuf, buf]); + return this.curve._wnafMul(this, k); }; -Signature.SIGHASH_ALL = 0x01; -Signature.SIGHASH_NONE = 0x02; -Signature.SIGHASH_SINGLE = 0x03; -Signature.SIGHASH_ANYONECANPAY = 0x80; - -module.exports = Signature; - -}).call(this,require("buffer").Buffer) -},{"../util/buffer":206,"../util/js":207,"../util/preconditions":208,"./bn":169,"buffer":52,"lodash":245}],175:[function(require,module,exports){ -(function (Buffer){ -'use strict'; - -var _ = require('lodash'); -var bs58 = require('bs58'); -var buffer = require('buffer'); +JPoint.prototype.eq = function eq(p) { + if (p.type === 'affine') + return this.eq(p.toJ()); -var ALPHABET = '123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz'.split(''); + if (this === p) + return true; -var Base58 = function Base58(obj) { - /* jshint maxcomplexity: 8 */ - if (!(this instanceof Base58)) { - return new Base58(obj); - } - if (Buffer.isBuffer(obj)) { - var buf = obj; - this.fromBuffer(buf); - } else if (typeof obj === 'string') { - var str = obj; - this.fromString(str); - } else if (obj) { - this.set(obj); - } -}; + // x1 * z2^2 == x2 * z1^2 + var z2 = this.z.redSqr(); + var pz2 = p.z.redSqr(); + if (this.x.redMul(pz2).redISub(p.x.redMul(z2)).cmpn(0) !== 0) + return false; -Base58.validCharacters = function validCharacters(chars) { - if (buffer.Buffer.isBuffer(chars)) { - chars = chars.toString(); - } - return _.every(_.map(chars, function(char) { return _.includes(ALPHABET, char); })); + // y1 * z2^3 == y2 * z1^3 + var z3 = z2.redMul(this.z); + var pz3 = pz2.redMul(p.z); + return this.y.redMul(pz3).redISub(p.y.redMul(z3)).cmpn(0) === 0; }; -Base58.prototype.set = function(obj) { - this.buf = obj.buf || this.buf || undefined; - return this; -}; +JPoint.prototype.eqXToP = function eqXToP(x) { + var zs = this.z.redSqr(); + var rx = x.toRed(this.curve.red).redMul(zs); + if (this.x.cmp(rx) === 0) + return true; -Base58.encode = function(buf) { - if (!buffer.Buffer.isBuffer(buf)) { - throw new Error('Input should be a buffer'); - } - return bs58.encode(buf); -}; + var xc = x.clone(); + var t = this.curve.redN.redMul(zs); + for (;;) { + xc.iadd(this.curve.n); + if (xc.cmp(this.curve.p) >= 0) + return false; -Base58.decode = function(str) { - if (typeof str !== 'string') { - throw new Error('Input should be a string'); + rx.redIAdd(t); + if (this.x.cmp(rx) === 0) + return true; } - return Buffer.from(bs58.decode(str)); -}; - -Base58.prototype.fromBuffer = function(buf) { - this.buf = buf; - return this; -}; - -Base58.prototype.fromString = function(str) { - var buf = Base58.decode(str); - this.buf = buf; - return this; + return false; }; -Base58.prototype.toBuffer = function() { - return this.buf; +JPoint.prototype.inspect = function inspect() { + if (this.isInfinity()) + return ''; + return ''; }; -Base58.prototype.toString = function() { - return Base58.encode(this.buf); +JPoint.prototype.isInfinity = function isInfinity() { + // XXX This code assumes that zero is always zero in red + return this.z.cmpn(0) === 0; }; -module.exports = Base58; - -}).call(this,require("buffer").Buffer) -},{"bs58":212,"buffer":52,"lodash":245}],176:[function(require,module,exports){ -(function (Buffer){ +},{"../../elliptic":119,"../curve":122,"bn.js":66,"inherits":153}],125:[function(require,module,exports){ 'use strict'; -var _ = require('lodash'); -var Base58 = require('./base58'); -var buffer = require('buffer'); -var sha256sha256 = require('../crypto/hash').sha256sha256; - -var Base58Check = function Base58Check(obj) { - if (!(this instanceof Base58Check)) - return new Base58Check(obj); - if (Buffer.isBuffer(obj)) { - var buf = obj; - this.fromBuffer(buf); - } else if (typeof obj === 'string') { - var str = obj; - this.fromString(str); - } else if (obj) { - this.set(obj); - } -}; +var curves = exports; -Base58Check.prototype.set = function(obj) { - this.buf = obj.buf || this.buf || undefined; - return this; -}; +var hash = require('hash.js'); +var elliptic = require('../elliptic'); -Base58Check.validChecksum = function validChecksum(data, checksum) { - if (_.isString(data)) { - data = new buffer.Buffer(Base58.decode(data)); - } - if (_.isString(checksum)) { - checksum = new buffer.Buffer(Base58.decode(checksum)); - } - if (!checksum) { - checksum = data.slice(-4); - data = data.slice(0, -4); - } - return Base58Check.checksum(data).toString('hex') === checksum.toString('hex'); -}; +var assert = elliptic.utils.assert; -Base58Check.decode = function(s) { - if (typeof s !== 'string') - throw new Error('Input must be a string'); +function PresetCurve(options) { + if (options.type === 'short') + this.curve = new elliptic.curve.short(options); + else if (options.type === 'edwards') + this.curve = new elliptic.curve.edwards(options); + else + this.curve = new elliptic.curve.mont(options); + this.g = this.curve.g; + this.n = this.curve.n; + this.hash = options.hash; - var buf = Buffer.from(Base58.decode(s)); + assert(this.g.validate(), 'Invalid curve'); + assert(this.g.mul(this.n).isInfinity(), 'Invalid curve, G*N != O'); +} +curves.PresetCurve = PresetCurve; - if (buf.length < 4) - throw new Error("Input string too short"); +function defineCurve(name, options) { + Object.defineProperty(curves, name, { + configurable: true, + enumerable: true, + get: function() { + var curve = new PresetCurve(options); + Object.defineProperty(curves, name, { + configurable: true, + enumerable: true, + value: curve + }); + return curve; + } + }); +} - var data = buf.slice(0, -4); - var csum = buf.slice(-4); +defineCurve('p192', { + type: 'short', + prime: 'p192', + p: 'ffffffff ffffffff ffffffff fffffffe ffffffff ffffffff', + a: 'ffffffff ffffffff ffffffff fffffffe ffffffff fffffffc', + b: '64210519 e59c80e7 0fa7e9ab 72243049 feb8deec c146b9b1', + n: 'ffffffff ffffffff ffffffff 99def836 146bc9b1 b4d22831', + hash: hash.sha256, + gRed: false, + g: [ + '188da80e b03090f6 7cbf20eb 43a18800 f4ff0afd 82ff1012', + '07192b95 ffc8da78 631011ed 6b24cdd5 73f977a1 1e794811' + ] +}); - var hash = sha256sha256(data); - var hash4 = hash.slice(0, 4); +defineCurve('p224', { + type: 'short', + prime: 'p224', + p: 'ffffffff ffffffff ffffffff ffffffff 00000000 00000000 00000001', + a: 'ffffffff ffffffff ffffffff fffffffe ffffffff ffffffff fffffffe', + b: 'b4050a85 0c04b3ab f5413256 5044b0b7 d7bfd8ba 270b3943 2355ffb4', + n: 'ffffffff ffffffff ffffffff ffff16a2 e0b8f03e 13dd2945 5c5c2a3d', + hash: hash.sha256, + gRed: false, + g: [ + 'b70e0cbd 6bb4bf7f 321390b9 4a03c1d3 56c21122 343280d6 115c1d21', + 'bd376388 b5f723fb 4c22dfe6 cd4375a0 5a074764 44d58199 85007e34' + ] +}); - if (csum.toString('hex') !== hash4.toString('hex')) - throw new Error("Checksum mismatch"); +defineCurve('p256', { + type: 'short', + prime: null, + p: 'ffffffff 00000001 00000000 00000000 00000000 ffffffff ffffffff ffffffff', + a: 'ffffffff 00000001 00000000 00000000 00000000 ffffffff ffffffff fffffffc', + b: '5ac635d8 aa3a93e7 b3ebbd55 769886bc 651d06b0 cc53b0f6 3bce3c3e 27d2604b', + n: 'ffffffff 00000000 ffffffff ffffffff bce6faad a7179e84 f3b9cac2 fc632551', + hash: hash.sha256, + gRed: false, + g: [ + '6b17d1f2 e12c4247 f8bce6e5 63a440f2 77037d81 2deb33a0 f4a13945 d898c296', + '4fe342e2 fe1a7f9b 8ee7eb4a 7c0f9e16 2bce3357 6b315ece cbb64068 37bf51f5' + ] +}); - return data; -}; +defineCurve('p384', { + type: 'short', + prime: null, + p: 'ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ' + + 'fffffffe ffffffff 00000000 00000000 ffffffff', + a: 'ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ' + + 'fffffffe ffffffff 00000000 00000000 fffffffc', + b: 'b3312fa7 e23ee7e4 988e056b e3f82d19 181d9c6e fe814112 0314088f ' + + '5013875a c656398d 8a2ed19d 2a85c8ed d3ec2aef', + n: 'ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff c7634d81 ' + + 'f4372ddf 581a0db2 48b0a77a ecec196a ccc52973', + hash: hash.sha384, + gRed: false, + g: [ + 'aa87ca22 be8b0537 8eb1c71e f320ad74 6e1d3b62 8ba79b98 59f741e0 82542a38 ' + + '5502f25d bf55296c 3a545e38 72760ab7', + '3617de4a 96262c6f 5d9e98bf 9292dc29 f8f41dbd 289a147c e9da3113 b5f0b8c0 ' + + '0a60b1ce 1d7e819d 7a431d7c 90ea0e5f' + ] +}); -Base58Check.checksum = function(buffer) { - return sha256sha256(buffer).slice(0, 4); -}; +defineCurve('p521', { + type: 'short', + prime: null, + p: '000001ff ffffffff ffffffff ffffffff ffffffff ffffffff ' + + 'ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ' + + 'ffffffff ffffffff ffffffff ffffffff ffffffff', + a: '000001ff ffffffff ffffffff ffffffff ffffffff ffffffff ' + + 'ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ' + + 'ffffffff ffffffff ffffffff ffffffff fffffffc', + b: '00000051 953eb961 8e1c9a1f 929a21a0 b68540ee a2da725b ' + + '99b315f3 b8b48991 8ef109e1 56193951 ec7e937b 1652c0bd ' + + '3bb1bf07 3573df88 3d2c34f1 ef451fd4 6b503f00', + n: '000001ff ffffffff ffffffff ffffffff ffffffff ffffffff ' + + 'ffffffff ffffffff fffffffa 51868783 bf2f966b 7fcc0148 ' + + 'f709a5d0 3bb5c9b8 899c47ae bb6fb71e 91386409', + hash: hash.sha512, + gRed: false, + g: [ + '000000c6 858e06b7 0404e9cd 9e3ecb66 2395b442 9c648139 ' + + '053fb521 f828af60 6b4d3dba a14b5e77 efe75928 fe1dc127 ' + + 'a2ffa8de 3348b3c1 856a429b f97e7e31 c2e5bd66', + '00000118 39296a78 9a3bc004 5c8a5fb4 2c7d1bd9 98f54449 ' + + '579b4468 17afbd17 273e662c 97ee7299 5ef42640 c550b901 ' + + '3fad0761 353c7086 a272c240 88be9476 9fd16650' + ] +}); -Base58Check.encode = function(buf) { - if (!Buffer.isBuffer(buf)) - throw new Error('Input must be a buffer'); - var checkedBuf = Buffer.alloc(buf.length + 4); - var hash = Base58Check.checksum(buf); - buf.copy(checkedBuf); - hash.copy(checkedBuf, buf.length); - return Base58.encode(checkedBuf); -}; +defineCurve('curve25519', { + type: 'mont', + prime: 'p25519', + p: '7fffffffffffffff ffffffffffffffff ffffffffffffffff ffffffffffffffed', + a: '76d06', + b: '1', + n: '1000000000000000 0000000000000000 14def9dea2f79cd6 5812631a5cf5d3ed', + hash: hash.sha256, + gRed: false, + g: [ + '9' + ] +}); -Base58Check.prototype.fromBuffer = function(buf) { - this.buf = buf; - return this; -}; +defineCurve('ed25519', { + type: 'edwards', + prime: 'p25519', + p: '7fffffffffffffff ffffffffffffffff ffffffffffffffff ffffffffffffffed', + a: '-1', + c: '1', + // -121665 * (121666^(-1)) (mod P) + d: '52036cee2b6ffe73 8cc740797779e898 00700a4d4141d8ab 75eb4dca135978a3', + n: '1000000000000000 0000000000000000 14def9dea2f79cd6 5812631a5cf5d3ed', + hash: hash.sha256, + gRed: false, + g: [ + '216936d3cd6e53fec0a4e231fdd6dc5c692cc7609525a7b2c9562d608f25d51a', -Base58Check.prototype.fromString = function(str) { - var buf = Base58Check.decode(str); - this.buf = buf; - return this; -}; + // 4/5 + '6666666666666666666666666666666666666666666666666666666666666658' + ] +}); -Base58Check.prototype.toBuffer = function() { - return this.buf; -}; +var pre; +try { + pre = require('./precomputed/secp256k1'); +} catch (e) { + pre = undefined; +} -Base58Check.prototype.toString = function() { - return Base58Check.encode(this.buf); -}; +defineCurve('secp256k1', { + type: 'short', + prime: 'k256', + p: 'ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff fffffffe fffffc2f', + a: '0', + b: '7', + n: 'ffffffff ffffffff ffffffff fffffffe baaedce6 af48a03b bfd25e8c d0364141', + h: '1', + hash: hash.sha256, -module.exports = Base58Check; + // Precomputed endomorphism + beta: '7ae96a2b657c07106e64479eac3434e99cf0497512f58995c1396c28719501ee', + lambda: '5363ad4cc05c30e0a5261c028812645a122e22ea20816678df02967c1b23bd72', + basis: [ + { + a: '3086d221a7d46bcde86c90e49284eb15', + b: '-e4437ed6010e88286f547fa90abfe4c3' + }, + { + a: '114ca50f7a8e2f3f657c1108d9d44cfd8', + b: '3086d221a7d46bcde86c90e49284eb15' + } + ], -}).call(this,require("buffer").Buffer) -},{"../crypto/hash":171,"./base58":175,"buffer":52,"lodash":245}],177:[function(require,module,exports){ -(function (Buffer){ + gRed: false, + g: [ + '79be667ef9dcbbac55a06295ce870b07029bfcdb2dce28d959f2815b16f81798', + '483ada7726a3c4655da4fbfc0e1108a8fd17b448a68554199c47d08ffb10d4b8', + pre + ] +}); + +},{"../elliptic":119,"./precomputed/secp256k1":132,"hash.js":138}],126:[function(require,module,exports){ 'use strict'; -var _ = require('lodash'); -var $ = require('../util/preconditions'); -var BufferUtil = require('../util/buffer'); -var BN = require('../crypto/bn'); +var BN = require('bn.js'); +var HmacDRBG = require('hmac-drbg'); +var elliptic = require('../../elliptic'); +var utils = elliptic.utils; +var assert = utils.assert; -var BufferReader = function BufferReader(buf) { - if (!(this instanceof BufferReader)) { - return new BufferReader(buf); - } - if (_.isUndefined(buf)) { - return; - } - if (Buffer.isBuffer(buf)) { - this.set({ - buf: buf - }); - } else if (_.isString(buf)) { - this.set({ - buf: Buffer.from(buf, 'hex'), - }); - } else if (_.isObject(buf)) { - var obj = buf; - this.set(obj); - } else { - throw new TypeError('Unrecognized argument for BufferReader'); - } -}; +var KeyPair = require('./key'); +var Signature = require('./signature'); -BufferReader.prototype.set = function(obj) { - this.buf = obj.buf || this.buf || undefined; - this.pos = obj.pos || this.pos || 0; - return this; -}; +function EC(options) { + if (!(this instanceof EC)) + return new EC(options); -BufferReader.prototype.eof = function() { - if(this.buf) { - return this.pos >= this.buf.length; - } else { - return true; + // Shortcut `elliptic.ec(curve-name)` + if (typeof options === 'string') { + assert(elliptic.curves.hasOwnProperty(options), 'Unknown curve ' + options); + + options = elliptic.curves[options]; } -}; -BufferReader.prototype.finished = BufferReader.prototype.eof; + // Shortcut for `elliptic.ec(elliptic.curves.curveName)` + if (options instanceof elliptic.curves.PresetCurve) + options = { curve: options }; -BufferReader.prototype.read = function(len) { - $.checkArgument(!_.isUndefined(len), 'Must specify a length'); - var buf = this.buf.slice(this.pos, this.pos + len); - this.pos = this.pos + len; - return buf; -}; + this.curve = options.curve.curve; + this.n = this.curve.n; + this.nh = this.n.ushrn(1); + this.g = this.curve.g; -BufferReader.prototype.readAll = function() { - var buf = this.buf.slice(this.pos, this.buf.length); - this.pos = this.buf.length; - return buf; -}; + // Point on curve + this.g = options.curve.g; + this.g.precompute(options.curve.n.bitLength() + 1); -BufferReader.prototype.readUInt8 = function() { - var val = this.buf.readUInt8(this.pos); - this.pos = this.pos + 1; - return val; -}; + // Hash for function for DRBG + this.hash = options.hash || options.curve.hash; +} +module.exports = EC; -BufferReader.prototype.readUInt16BE = function() { - var val = this.buf.readUInt16BE(this.pos); - this.pos = this.pos + 2; - return val; +EC.prototype.keyPair = function keyPair(options) { + return new KeyPair(this, options); }; -BufferReader.prototype.readUInt16LE = function() { - var val = this.buf.readUInt16LE(this.pos); - this.pos = this.pos + 2; - return val; +EC.prototype.keyFromPrivate = function keyFromPrivate(priv, enc) { + return KeyPair.fromPrivate(this, priv, enc); }; -BufferReader.prototype.readUInt32BE = function() { - var val = this.buf.readUInt32BE(this.pos); - this.pos = this.pos + 4; - return val; +EC.prototype.keyFromPublic = function keyFromPublic(pub, enc) { + return KeyPair.fromPublic(this, pub, enc); }; -BufferReader.prototype.readUInt32LE = function() { - var val = this.buf.readUInt32LE(this.pos); - this.pos = this.pos + 4; - return val; -}; +EC.prototype.genKeyPair = function genKeyPair(options) { + if (!options) + options = {}; -BufferReader.prototype.readInt32LE = function() { - var val = this.buf.readInt32LE(this.pos); - this.pos = this.pos + 4; - return val; -}; + // Instantiate Hmac_DRBG + var drbg = new HmacDRBG({ + hash: this.hash, + pers: options.pers, + persEnc: options.persEnc || 'utf8', + entropy: options.entropy || elliptic.rand(this.hash.hmacStrength), + entropyEnc: options.entropy && options.entropyEnc || 'utf8', + nonce: this.n.toArray() + }); -BufferReader.prototype.readUInt64BEBN = function() { - var buf = this.buf.slice(this.pos, this.pos + 8); - var bn = BN.fromBuffer(buf); - this.pos = this.pos + 8; - return bn; + var bytes = this.n.byteLength(); + var ns2 = this.n.sub(new BN(2)); + do { + var priv = new BN(drbg.generate(bytes)); + if (priv.cmp(ns2) > 0) + continue; + + priv.iaddn(1); + return this.keyFromPrivate(priv); + } while (true); }; -BufferReader.prototype.readUInt64LEBN = function() { - var second = this.buf.readUInt32LE(this.pos); - var first = this.buf.readUInt32LE(this.pos + 4); - var combined = (first * 0x100000000) + second; - // Instantiating an instance of BN with a number is faster than with an - // array or string. However, the maximum safe number for a double precision - // floating point is 2 ^ 52 - 1 (0x1fffffffffffff), thus we can safely use - // non-floating point numbers less than this amount (52 bits). And in the case - // that the number is larger, we can instatiate an instance of BN by passing - // an array from the buffer (slower) and specifying the endianness. - var bn; - if (combined <= 0x1fffffffffffff) { - bn = new BN(combined); - } else { - var data = Array.prototype.slice.call(this.buf, this.pos, this.pos + 8); - bn = new BN(data, 10, 'le'); - } - this.pos = this.pos + 8; - return bn; +EC.prototype._truncateToN = function truncateToN(msg, truncOnly) { + var delta = msg.byteLength() * 8 - this.n.bitLength(); + if (delta > 0) + msg = msg.ushrn(delta); + if (!truncOnly && msg.cmp(this.n) >= 0) + return msg.sub(this.n); + else + return msg; }; -BufferReader.prototype.readVarintNum = function() { - var first = this.readUInt8(); - switch (first) { - case 0xFD: - return this.readUInt16LE(); - case 0xFE: - return this.readUInt32LE(); - case 0xFF: - var bn = this.readUInt64LEBN(); - var n = bn.toNumber(); - if (n <= Math.pow(2, 53)) { - return n; - } else { - throw new Error('number too large to retain precision - use readVarintBN'); - } - break; - default: - return first; +EC.prototype.sign = function sign(msg, key, enc, options) { + if (typeof enc === 'object') { + options = enc; + enc = null; } -}; + if (!options) + options = {}; -/** - * reads a length prepended buffer - */ -BufferReader.prototype.readVarLengthBuffer = function() { - var len = this.readVarintNum(); - var buf = this.read(len); - $.checkState(buf.length === len, 'Invalid length while reading varlength buffer. ' + - 'Expected to read: ' + len + ' and read ' + buf.length); - return buf; -}; + key = this.keyFromPrivate(key, enc); + msg = this._truncateToN(new BN(msg, 16)); -BufferReader.prototype.readVarintBuf = function() { - var first = this.buf.readUInt8(this.pos); - switch (first) { - case 0xFD: - return this.read(1 + 2); - case 0xFE: - return this.read(1 + 4); - case 0xFF: - return this.read(1 + 8); - default: - return this.read(1); - } -}; + // Zero-extend key to provide enough entropy + var bytes = this.n.byteLength(); + var bkey = key.getPrivate().toArray('be', bytes); -BufferReader.prototype.readVarintBN = function() { - var first = this.readUInt8(); - switch (first) { - case 0xFD: - return new BN(this.readUInt16LE()); - case 0xFE: - return new BN(this.readUInt32LE()); - case 0xFF: - return this.readUInt64LEBN(); - default: - return new BN(first); - } -}; + // Zero-extend nonce to have the same byte size as N + var nonce = msg.toArray('be', bytes); -BufferReader.prototype.reverse = function() { - var buf = Buffer.alloc(this.buf.length); - for (var i = 0; i < buf.length; i++) { - buf[i] = this.buf[this.buf.length - 1 - i]; - } - this.buf = buf; - return this; -}; + // Instantiate Hmac_DRBG + var drbg = new HmacDRBG({ + hash: this.hash, + entropy: bkey, + nonce: nonce, + pers: options.pers, + persEnc: options.persEnc || 'utf8' + }); -BufferReader.prototype.readReverse = function(len) { - if (_.isUndefined(len)) { - len = this.buf.length; - } - var buf = this.buf.slice(this.pos, this.pos + len); - this.pos = this.pos + len; - return BufferUtil.reverse(buf); -}; + // Number of bytes to generate + var ns1 = this.n.sub(new BN(1)); -module.exports = BufferReader; + for (var iter = 0; true; iter++) { + var k = options.k ? + options.k(iter) : + new BN(drbg.generate(this.n.byteLength())); + k = this._truncateToN(k, true); + if (k.cmpn(1) <= 0 || k.cmp(ns1) >= 0) + continue; -}).call(this,require("buffer").Buffer) -},{"../crypto/bn":169,"../util/buffer":206,"../util/preconditions":208,"buffer":52,"lodash":245}],178:[function(require,module,exports){ -(function (Buffer){ -'use strict'; + var kp = this.g.mul(k); + if (kp.isInfinity()) + continue; -var bufferUtil = require('../util/buffer'); -var assert = require('assert'); + var kpX = kp.getX(); + var r = kpX.umod(this.n); + if (r.cmpn(0) === 0) + continue; -var BufferWriter = function BufferWriter(obj) { - if (!(this instanceof BufferWriter)) - return new BufferWriter(obj); - this.bufLen = 0; - if (obj) - this.set(obj); - else - this.bufs = []; -}; + var s = k.invm(this.n).mul(r.mul(key.getPrivate()).iadd(msg)); + s = s.umod(this.n); + if (s.cmpn(0) === 0) + continue; -BufferWriter.prototype.set = function(obj) { - this.bufs = obj.bufs || this.bufs || []; - this.bufLen = this.bufs.reduce(function(prev, buf){ return prev + buf.length; }, 0); - return this; -}; + var recoveryParam = (kp.getY().isOdd() ? 1 : 0) | + (kpX.cmp(r) !== 0 ? 2 : 0); -BufferWriter.prototype.toBuffer = function() { - return this.concat(); -}; + // Use complement of `s`, if it is > `n / 2` + if (options.canonical && s.cmp(this.nh) > 0) { + s = this.n.sub(s); + recoveryParam ^= 1; + } -BufferWriter.prototype.concat = function() { - return Buffer.concat(this.bufs, this.bufLen); + return new Signature({ r: r, s: s, recoveryParam: recoveryParam }); + } }; -BufferWriter.prototype.write = function(buf) { - assert(bufferUtil.isBuffer(buf)); - this.bufs.push(buf); - this.bufLen += buf.length; - return this; -}; +EC.prototype.verify = function verify(msg, signature, key, enc) { + msg = this._truncateToN(new BN(msg, 16)); + key = this.keyFromPublic(key, enc); + signature = new Signature(signature, 'hex'); -BufferWriter.prototype.writeReverse = function(buf) { - assert(bufferUtil.isBuffer(buf)); - this.bufs.push(bufferUtil.reverse(buf)); - this.bufLen += buf.length; - return this; -}; + // Perform primitive values validation + var r = signature.r; + var s = signature.s; + if (r.cmpn(1) < 0 || r.cmp(this.n) >= 0) + return false; + if (s.cmpn(1) < 0 || s.cmp(this.n) >= 0) + return false; -BufferWriter.prototype.writeUInt8 = function(n) { - var buf = Buffer.alloc(1); - buf.writeUInt8(n, 0); - this.write(buf); - return this; -}; + // Validate signature + var sinv = s.invm(this.n); + var u1 = sinv.mul(msg).umod(this.n); + var u2 = sinv.mul(r).umod(this.n); -BufferWriter.prototype.writeUInt16BE = function(n) { - var buf = Buffer.alloc(2); - buf.writeUInt16BE(n, 0); - this.write(buf); - return this; -}; + if (!this.curve._maxwellTrick) { + var p = this.g.mulAdd(u1, key.getPublic(), u2); + if (p.isInfinity()) + return false; -BufferWriter.prototype.writeUInt16LE = function(n) { - var buf = Buffer.alloc(2); - buf.writeUInt16LE(n, 0); - this.write(buf); - return this; -}; + return p.getX().umod(this.n).cmp(r) === 0; + } -BufferWriter.prototype.writeUInt32BE = function(n) { - var buf = Buffer.alloc(4); - buf.writeUInt32BE(n, 0); - this.write(buf); - return this; -}; + // NOTE: Greg Maxwell's trick, inspired by: + // https://git.io/vad3K -BufferWriter.prototype.writeInt32LE = function(n) { - var buf = Buffer.alloc(4); - buf.writeInt32LE(n, 0); - this.write(buf); - return this; -}; + var p = this.g.jmulAdd(u1, key.getPublic(), u2); + if (p.isInfinity()) + return false; -BufferWriter.prototype.writeUInt32LE = function(n) { - var buf = Buffer.alloc(4); - buf.writeUInt32LE(n, 0); - this.write(buf); - return this; + // Compare `p.x` of Jacobian point with `r`, + // this will do `p.x == r * p.z^2` instead of multiplying `p.x` by the + // inverse of `p.z^2` + return p.eqXToP(r); }; -BufferWriter.prototype.writeUInt64BEBN = function(bn) { - var buf = bn.toBuffer({size: 8}); - this.write(buf); - return this; -}; +EC.prototype.recoverPubKey = function(msg, signature, j, enc) { + assert((3 & j) === j, 'The recovery param is more than two bits'); + signature = new Signature(signature, enc); -BufferWriter.prototype.writeUInt64LEBN = function(bn) { - var buf = bn.toBuffer({size: 8}); - this.writeReverse(buf); - return this; -}; + var n = this.n; + var e = new BN(msg); + var r = signature.r; + var s = signature.s; -BufferWriter.prototype.writeVarintNum = function(n) { - var buf = BufferWriter.varintBufNum(n); - this.write(buf); - return this; -}; + // A set LSB signifies that the y-coordinate is odd + var isYOdd = j & 1; + var isSecondKey = j >> 1; + if (r.cmp(this.curve.p.umod(this.curve.n)) >= 0 && isSecondKey) + throw new Error('Unable to find sencond key candinate'); -BufferWriter.prototype.writeVarintBN = function(bn) { - var buf = BufferWriter.varintBufBN(bn); - this.write(buf); - return this; -}; + // 1.1. Let x = r + jn. + if (isSecondKey) + r = this.curve.pointFromX(r.add(this.curve.n), isYOdd); + else + r = this.curve.pointFromX(r, isYOdd); -BufferWriter.varintBufNum = function(n) { - var buf = undefined; - if (n < 253) { - buf = Buffer.alloc(1); - buf.writeUInt8(n, 0); - } else if (n < 0x10000) { - buf = Buffer.alloc(1 + 2); - buf.writeUInt8(253, 0); - buf.writeUInt16LE(n, 1); - } else if (n < 0x100000000) { - buf = Buffer.alloc(1 + 4); - buf.writeUInt8(254, 0); - buf.writeUInt32LE(n, 1); - } else { - buf = Buffer.alloc(1 + 8); - buf.writeUInt8(255, 0); - buf.writeInt32LE(n & -1, 1); - buf.writeUInt32LE(Math.floor(n / 0x100000000), 5); - } - return buf; + var rInv = signature.r.invm(n); + var s1 = n.sub(e).mul(rInv).umod(n); + var s2 = s.mul(rInv).umod(n); + + // 1.6.1 Compute Q = r^-1 (sR - eG) + // Q = r^-1 (sR + -eG) + return this.g.mulAdd(s1, r, s2); }; -BufferWriter.varintBufBN = function(bn) { - var buf = undefined; - var n = bn.toNumber(); - if (n < 253) { - buf = Buffer.alloc(1); - buf.writeUInt8(n, 0); - } else if (n < 0x10000) { - buf = Buffer.alloc(1 + 2); - buf.writeUInt8(253, 0); - buf.writeUInt16LE(n, 1); - } else if (n < 0x100000000) { - buf = Buffer.alloc(1 + 4); - buf.writeUInt8(254, 0); - buf.writeUInt32LE(n, 1); - } else { - var bw = new BufferWriter(); - bw.writeUInt8(255); - bw.writeUInt64LEBN(bn); - var buf = bw.concat(); +EC.prototype.getKeyRecoveryParam = function(e, signature, Q, enc) { + signature = new Signature(signature, enc); + if (signature.recoveryParam !== null) + return signature.recoveryParam; + + for (var i = 0; i < 4; i++) { + var Qprime; + try { + Qprime = this.recoverPubKey(e, signature, i); + } catch (e) { + continue; + } + + if (Qprime.eq(Q)) + return i; } - return buf; + throw new Error('Unable to find valid recovery factor'); }; -module.exports = BufferWriter; - -}).call(this,require("buffer").Buffer) -},{"../util/buffer":206,"assert":15,"buffer":52}],179:[function(require,module,exports){ -(function (Buffer){ +},{"../../elliptic":119,"./key":127,"./signature":128,"bn.js":66,"hmac-drbg":151}],127:[function(require,module,exports){ 'use strict'; -var BufferWriter = require('./bufferwriter'); -var BufferReader = require('./bufferreader'); -var BN = require('../crypto/bn'); +var BN = require('bn.js'); +var elliptic = require('../../elliptic'); +var utils = elliptic.utils; +var assert = utils.assert; -var Varint = function Varint(buf) { - if (!(this instanceof Varint)) - return new Varint(buf); - if (Buffer.isBuffer(buf)) { - this.buf = buf; - } else if (typeof buf === 'number') { - var num = buf; - this.fromNumber(num); - } else if (buf instanceof BN) { - var bn = buf; - this.fromBN(bn); - } else if (buf) { - var obj = buf; - this.set(obj); - } -}; +function KeyPair(ec, options) { + this.ec = ec; + this.priv = null; + this.pub = null; -Varint.prototype.set = function(obj) { - this.buf = obj.buf || this.buf; - return this; + // KeyPair(ec, { priv: ..., pub: ... }) + if (options.priv) + this._importPrivate(options.priv, options.privEnc); + if (options.pub) + this._importPublic(options.pub, options.pubEnc); +} +module.exports = KeyPair; + +KeyPair.fromPublic = function fromPublic(ec, pub, enc) { + if (pub instanceof KeyPair) + return pub; + + return new KeyPair(ec, { + pub: pub, + pubEnc: enc + }); }; -Varint.prototype.fromString = function(str) { - this.set({ - buf: Buffer.from(str, 'hex') +KeyPair.fromPrivate = function fromPrivate(ec, priv, enc) { + if (priv instanceof KeyPair) + return priv; + + return new KeyPair(ec, { + priv: priv, + privEnc: enc }); - return this; }; -Varint.prototype.toString = function() { - return this.buf.toString('hex'); +KeyPair.prototype.validate = function validate() { + var pub = this.getPublic(); + + if (pub.isInfinity()) + return { result: false, reason: 'Invalid public key' }; + if (!pub.validate()) + return { result: false, reason: 'Public key is not a point' }; + if (!pub.mul(this.ec.curve.n).isInfinity()) + return { result: false, reason: 'Public key * N != O' }; + + return { result: true, reason: null }; }; -Varint.prototype.fromBuffer = function(buf) { - this.buf = buf; - return this; +KeyPair.prototype.getPublic = function getPublic(compact, enc) { + // compact is optional argument + if (typeof compact === 'string') { + enc = compact; + compact = null; + } + + if (!this.pub) + this.pub = this.ec.g.mul(this.priv); + + if (!enc) + return this.pub; + + return this.pub.encode(enc, compact); }; -Varint.prototype.fromBufferReader = function(br) { - this.buf = br.readVarintBuf(); - return this; +KeyPair.prototype.getPrivate = function getPrivate(enc) { + if (enc === 'hex') + return this.priv.toString(16, 2); + else + return this.priv; }; -Varint.prototype.fromBN = function(bn) { - this.buf = BufferWriter().writeVarintBN(bn).concat(); - return this; +KeyPair.prototype._importPrivate = function _importPrivate(key, enc) { + this.priv = new BN(key, enc || 16); + + // Ensure that the priv won't be bigger than n, otherwise we may fail + // in fixed multiplication method + this.priv = this.priv.umod(this.ec.curve.n); }; -Varint.prototype.fromNumber = function(num) { - this.buf = BufferWriter().writeVarintNum(num).concat(); - return this; +KeyPair.prototype._importPublic = function _importPublic(key, enc) { + if (key.x || key.y) { + // Montgomery points only have an `x` coordinate. + // Weierstrass/Edwards points on the other hand have both `x` and + // `y` coordinates. + if (this.ec.curve.type === 'mont') { + assert(key.x, 'Need x coordinate'); + } else if (this.ec.curve.type === 'short' || + this.ec.curve.type === 'edwards') { + assert(key.x && key.y, 'Need both x and y coordinate'); + } + this.pub = this.ec.curve.point(key.x, key.y); + return; + } + this.pub = this.ec.curve.decodePoint(key, enc); }; -Varint.prototype.toBuffer = function() { - return this.buf; +// ECDH +KeyPair.prototype.derive = function derive(pub) { + return pub.mul(this.priv).getX(); }; -Varint.prototype.toBN = function() { - return BufferReader(this.buf).readVarintBN(); +// ECDSA +KeyPair.prototype.sign = function sign(msg, enc, options) { + return this.ec.sign(msg, this, enc, options); }; -Varint.prototype.toNumber = function() { - return BufferReader(this.buf).readVarintNum(); +KeyPair.prototype.verify = function verify(msg, signature) { + return this.ec.verify(msg, signature, this); }; -module.exports = Varint; +KeyPair.prototype.inspect = function inspect() { + return ''; +}; -}).call(this,require("buffer").Buffer) -},{"../crypto/bn":169,"./bufferreader":177,"./bufferwriter":178,"buffer":52}],180:[function(require,module,exports){ +},{"../../elliptic":119,"bn.js":66}],128:[function(require,module,exports){ 'use strict'; -var _ = require('lodash'); +var BN = require('bn.js'); -function format(message, args) { - return message - .replace('{0}', args[0]) - .replace('{1}', args[1]) - .replace('{2}', args[2]); +var elliptic = require('../../elliptic'); +var utils = elliptic.utils; +var assert = utils.assert; + +function Signature(options, enc) { + if (options instanceof Signature) + return options; + + if (this._importDER(options, enc)) + return; + + assert(options.r && options.s, 'Signature without r or s'); + this.r = new BN(options.r, 16); + this.s = new BN(options.s, 16); + if (options.recoveryParam === undefined) + this.recoveryParam = null; + else + this.recoveryParam = options.recoveryParam; } -var traverseNode = function(parent, errorDefinition) { - var NodeError = function() { - if (_.isString(errorDefinition.message)) { - this.message = format(errorDefinition.message, arguments); - } else if (_.isFunction(errorDefinition.message)) { - this.message = errorDefinition.message.apply(null, arguments); - } else { - throw new Error('Invalid error definition for ' + errorDefinition.name); - } - this.stack = this.message + '\n' + (new Error()).stack; - }; - NodeError.prototype = Object.create(parent.prototype); - NodeError.prototype.name = parent.prototype.name + errorDefinition.name; - parent[errorDefinition.name] = NodeError; - if (errorDefinition.errors) { - childDefinitions(NodeError, errorDefinition.errors); +module.exports = Signature; + +function Position() { + this.place = 0; +} + +function getLength(buf, p) { + var initial = buf[p.place++]; + if (!(initial & 0x80)) { + return initial; } - return NodeError; -}; + var octetLen = initial & 0xf; + var val = 0; + for (var i = 0, off = p.place; i < octetLen; i++, off++) { + val <<= 8; + val |= buf[off]; + } + p.place = off; + return val; +} -/* jshint latedef: false */ -var childDefinitions = function(parent, childDefinitions) { - _.each(childDefinitions, function(childDefinition) { - traverseNode(parent, childDefinition); - }); -}; -/* jshint latedef: true */ +function rmPadding(buf) { + var i = 0; + var len = buf.length - 1; + while (!buf[i] && !(buf[i + 1] & 0x80) && i < len) { + i++; + } + if (i === 0) { + return buf; + } + return buf.slice(i); +} -var traverseRoot = function(parent, errorsDefinition) { - childDefinitions(parent, errorsDefinition); - return parent; -}; +Signature.prototype._importDER = function _importDER(data, enc) { + data = utils.toArray(data, enc); + var p = new Position(); + if (data[p.place++] !== 0x30) { + return false; + } + var len = getLength(data, p); + if ((len + p.place) !== data.length) { + return false; + } + if (data[p.place++] !== 0x02) { + return false; + } + var rlen = getLength(data, p); + var r = data.slice(p.place, rlen + p.place); + p.place += rlen; + if (data[p.place++] !== 0x02) { + return false; + } + var slen = getLength(data, p); + if (data.length !== slen + p.place) { + return false; + } + var s = data.slice(p.place, slen + p.place); + if (r[0] === 0 && (r[1] & 0x80)) { + r = r.slice(1); + } + if (s[0] === 0 && (s[1] & 0x80)) { + s = s.slice(1); + } + this.r = new BN(r); + this.s = new BN(s); + this.recoveryParam = null; -var bitcore = {}; -bitcore.Error = function() { - this.message = 'Internal error'; - this.stack = this.message + '\n' + (new Error()).stack; + return true; }; -bitcore.Error.prototype = Object.create(Error.prototype); -bitcore.Error.prototype.name = 'bitcore.Error'; +function constructLength(arr, len) { + if (len < 0x80) { + arr.push(len); + return; + } + var octets = 1 + (Math.log(len) / Math.LN2 >>> 3); + arr.push(octets | 0x80); + while (--octets) { + arr.push((len >>> (octets << 3)) & 0xff); + } + arr.push(len); +} + +Signature.prototype.toDER = function toDER(enc) { + var r = this.r.toArray(); + var s = this.s.toArray(); -var data = require('./spec'); -traverseRoot(bitcore.Error, data); + // Pad values + if (r[0] & 0x80) + r = [ 0 ].concat(r); + // Pad values + if (s[0] & 0x80) + s = [ 0 ].concat(s); -module.exports = bitcore.Error; + r = rmPadding(r); + s = rmPadding(s); -module.exports.extend = function(spec) { - return traverseNode(bitcore.Error, spec); + while (!s[0] && !(s[1] & 0x80)) { + s = s.slice(1); + } + var arr = [ 0x02 ]; + constructLength(arr, r.length); + arr = arr.concat(r); + arr.push(0x02); + constructLength(arr, s.length); + var backHalf = arr.concat(s); + var res = [ 0x30 ]; + constructLength(res, backHalf.length); + res = res.concat(backHalf); + return utils.encode(res, enc); }; -},{"./spec":181,"lodash":245}],181:[function(require,module,exports){ +},{"../../elliptic":119,"bn.js":66}],129:[function(require,module,exports){ 'use strict'; -var docsURL = 'http://bitcore.io/'; - -module.exports = [{ - name: 'InvalidB58Char', - message: 'Invalid Base58 character: {0} in {1}' -}, { - name: 'InvalidB58Checksum', - message: 'Invalid Base58 checksum for {0}' -}, { - name: 'InvalidNetwork', - message: 'Invalid version for network: got {0}' -}, { - name: 'InvalidState', - message: 'Invalid state: {0}' -}, { - name: 'NotImplemented', - message: 'Function {0} was not implemented yet' -}, { - name: 'InvalidNetworkArgument', - message: 'Invalid network: must be "livenet" or "testnet", got {0}' -}, { - name: 'InvalidArgument', - message: function() { - return 'Invalid Argument' + (arguments[0] ? (': ' + arguments[0]) : '') + - (arguments[1] ? (' Documentation: ' + docsURL + arguments[1]) : ''); - } -}, { - name: 'AbstractMethodInvoked', - message: 'Abstract Method Invocation: {0}' -}, { - name: 'InvalidArgumentType', - message: function() { - return 'Invalid Argument for ' + arguments[2] + ', expected ' + arguments[1] + ' but got ' + typeof arguments[0]; - } -}, { - name: 'Unit', - message: 'Internal Error on Unit {0}', - errors: [{ - 'name': 'UnknownCode', - 'message': 'Unrecognized unit code: {0}' - }, { - 'name': 'InvalidRate', - 'message': 'Invalid exchange rate: {0}' - }] -}, { - name: 'MerkleBlock', - message: 'Internal Error on MerkleBlock {0}', - errors: [{ - 'name': 'InvalidMerkleTree', - 'message': 'This MerkleBlock contain an invalid Merkle Tree' - }] -}, { - name: 'Transaction', - message: 'Internal Error on Transaction {0}', - errors: [{ - name: 'Input', - message: 'Internal Error on Input {0}', - errors: [{ - name: 'MissingScript', - message: 'Need a script to create an input' - }, { - name: 'UnsupportedScript', - message: 'Unsupported input script type: {0}' - }, { - name: 'MissingPreviousOutput', - message: 'No previous output information.' - }] - }, { - name: 'NeedMoreInfo', - message: '{0}' - }, { - name: 'InvalidSorting', - message: 'The sorting function provided did not return the change output as one of the array elements' - }, { - name: 'InvalidOutputAmountSum', - message: '{0}' - }, { - name: 'MissingSignatures', - message: 'Some inputs have not been fully signed' - }, { - name: 'InvalidIndex', - message: 'Invalid index: {0} is not between 0, {1}' - }, { - name: 'UnableToVerifySignature', - message: 'Unable to verify signature: {0}' - }, { - name: 'DustOutputs', - message: 'Dust amount detected in one output' - }, { - name: 'InvalidSatoshis', - message: 'Output satoshis are invalid', - }, { - name: 'FeeError', - message: 'Internal Error on Fee {0}', - errors: [{ - name: 'TooSmall', - message: 'Fee is too small: {0}', - }, { - name: 'TooLarge', - message: 'Fee is too large: {0}', - }, { - name: 'Different', - message: 'Unspent value is different from specified fee: {0}', - }] - }, { - name: 'ChangeAddressMissing', - message: 'Change address is missing' - }, { - name: 'BlockHeightTooHigh', - message: 'Block Height can be at most 2^32 -1' - }, { - name: 'NLockTimeOutOfRange', - message: 'Block Height can only be between 0 and 499 999 999' - }, { - name: 'LockTimeTooEarly', - message: 'Lock Time can\'t be earlier than UNIX date 500 000 000' - }] -}, { - name: 'Script', - message: 'Internal Error on Script {0}', - errors: [{ - name: 'UnrecognizedAddress', - message: 'Expected argument {0} to be an address' - }, { - name: 'CantDeriveAddress', - message: 'Can\'t derive address associated with script {0}, needs to be p2pkh in, p2pkh out, p2sh in, or p2sh out.' - }, { - name: 'InvalidBuffer', - message: 'Invalid script buffer: can\'t parse valid script from given buffer {0}' - }] -}, { - name: 'HDPrivateKey', - message: 'Internal Error on HDPrivateKey {0}', - errors: [{ - name: 'InvalidDerivationArgument', - message: 'Invalid derivation argument {0}, expected string, or number and boolean' - }, { - name: 'InvalidEntropyArgument', - message: 'Invalid entropy: must be an hexa string or binary buffer, got {0}', - errors: [{ - name: 'TooMuchEntropy', - message: 'Invalid entropy: more than 512 bits is non standard, got "{0}"' - }, { - name: 'NotEnoughEntropy', - message: 'Invalid entropy: at least 128 bits needed, got "{0}"' - }] - }, { - name: 'InvalidLength', - message: 'Invalid length for xprivkey string in {0}' - }, { - name: 'InvalidPath', - message: 'Invalid derivation path: {0}' - }, { - name: 'UnrecognizedArgument', - message: 'Invalid argument: creating a HDPrivateKey requires a string, buffer, json or object, got "{0}"' - }] -}, { - name: 'HDPublicKey', - message: 'Internal Error on HDPublicKey {0}', - errors: [{ - name: 'ArgumentIsPrivateExtended', - message: 'Argument is an extended private key: {0}' - }, { - name: 'InvalidDerivationArgument', - message: 'Invalid derivation argument: got {0}' - }, { - name: 'InvalidLength', - message: 'Invalid length for xpubkey: got "{0}"' - }, { - name: 'InvalidPath', - message: 'Invalid derivation path, it should look like: "m/1/100", got "{0}"' - }, { - name: 'InvalidIndexCantDeriveHardened', - message: 'Invalid argument: creating a hardened path requires an HDPrivateKey' - }, { - name: 'MustSupplyArgument', - message: 'Must supply an argument to create a HDPublicKey' - }, { - name: 'UnrecognizedArgument', - message: 'Invalid argument for creation, must be string, json, buffer, or object' - }] -}]; - -},{}],182:[function(require,module,exports){ -(function (Buffer){ -'use strict'; +var hash = require('hash.js'); +var elliptic = require('../../elliptic'); +var utils = elliptic.utils; +var assert = utils.assert; +var parseBytes = utils.parseBytes; +var KeyPair = require('./key'); +var Signature = require('./signature'); +function EDDSA(curve) { + assert(curve === 'ed25519', 'only tested with ed25519 so far'); -var assert = require('assert'); -var buffer = require('buffer'); -var _ = require('lodash'); -var $ = require('./util/preconditions'); + if (!(this instanceof EDDSA)) + return new EDDSA(curve); -var BN = require('./crypto/bn'); -var Base58 = require('./encoding/base58'); -var Base58Check = require('./encoding/base58check'); -var Hash = require('./crypto/hash'); -var Network = require('./networks'); -var Point = require('./crypto/point'); -var PrivateKey = require('./privatekey'); -var Random = require('./crypto/random'); + var curve = elliptic.curves[curve].curve; + this.curve = curve; + this.g = curve.g; + this.g.precompute(curve.n.bitLength() + 1); -var errors = require('./errors'); -var hdErrors = errors.HDPrivateKey; -var BufferUtil = require('./util/buffer'); -var JSUtil = require('./util/js'); + this.pointClass = curve.point().constructor; + this.encodingLength = Math.ceil(curve.n.bitLength() / 8); + this.hash = hash.sha512; +} -var MINIMUM_ENTROPY_BITS = 128; -var BITS_TO_BYTES = 1 / 8; -var MAXIMUM_ENTROPY_BITS = 512; +module.exports = EDDSA; +/** +* @param {Array|String} message - message bytes +* @param {Array|String|KeyPair} secret - secret bytes or a keypair +* @returns {Signature} - signature +*/ +EDDSA.prototype.sign = function sign(message, secret) { + message = parseBytes(message); + var key = this.keyFromSecret(secret); + var r = this.hashInt(key.messagePrefix(), message); + var R = this.g.mul(r); + var Rencoded = this.encodePoint(R); + var s_ = this.hashInt(Rencoded, key.pubBytes(), message) + .mul(key.priv()); + var S = r.add(s_).umod(this.curve.n); + return this.makeSignature({ R: R, S: S, Rencoded: Rencoded }); +}; /** - * Represents an instance of an hierarchically derived private key. - * - * More info on https://github.com/bitcoin/bips/blob/master/bip-0032.mediawiki - * - * @constructor - * @param {string|Buffer|Object} arg - */ -function HDPrivateKey(arg) { - /* jshint maxcomplexity: 10 */ - if (arg instanceof HDPrivateKey) { - return arg; - } - if (!(this instanceof HDPrivateKey)) { - return new HDPrivateKey(arg); - } - if (!arg) { - return this._generateRandomly(); - } +* @param {Array} message - message bytes +* @param {Array|String|Signature} sig - sig bytes +* @param {Array|String|Point|KeyPair} pub - public key +* @returns {Boolean} - true if public key matches sig of message +*/ +EDDSA.prototype.verify = function verify(message, sig, pub) { + message = parseBytes(message); + sig = this.makeSignature(sig); + var key = this.keyFromPublic(pub); + var h = this.hashInt(sig.Rencoded(), key.pubBytes(), message); + var SG = this.g.mul(sig.S()); + var RplusAh = sig.R().add(key.pub().mul(h)); + return RplusAh.eq(SG); +}; - if (Network.get(arg)) { - return this._generateRandomly(arg); - } else if (_.isString(arg) || BufferUtil.isBuffer(arg)) { - if (HDPrivateKey.isValidSerialized(arg)) { - this._buildFromSerialized(arg); - } else if (JSUtil.isValidJSON(arg)) { - this._buildFromJSON(arg); - } else if (BufferUtil.isBuffer(arg) && HDPrivateKey.isValidSerialized(arg.toString())) { - this._buildFromSerialized(arg.toString()); - } else { - throw HDPrivateKey.getSerializedError(arg); - } - } else if (_.isObject(arg)) { - this._buildFromObject(arg); - } else { - throw new hdErrors.UnrecognizedArgument(arg); - } -} +EDDSA.prototype.hashInt = function hashInt() { + var hash = this.hash(); + for (var i = 0; i < arguments.length; i++) + hash.update(arguments[i]); + return utils.intFromLE(hash.digest()).umod(this.curve.n); +}; -/** - * Verifies that a given path is valid. - * - * @param {string|number} arg - * @param {boolean?} hardened - * @return {boolean} - */ -HDPrivateKey.isValidPath = function(arg, hardened) { - if (_.isString(arg)) { - var indexes = HDPrivateKey._getDerivationIndexes(arg); - return indexes !== null && _.every(indexes, HDPrivateKey.isValidPath); - } +EDDSA.prototype.keyFromPublic = function keyFromPublic(pub) { + return KeyPair.fromPublic(this, pub); +}; - if (_.isNumber(arg)) { - if (arg < HDPrivateKey.Hardened && hardened === true) { - arg += HDPrivateKey.Hardened; - } - return arg >= 0 && arg < HDPrivateKey.MaxIndex; - } +EDDSA.prototype.keyFromSecret = function keyFromSecret(secret) { + return KeyPair.fromSecret(this, secret); +}; - return false; +EDDSA.prototype.makeSignature = function makeSignature(sig) { + if (sig instanceof Signature) + return sig; + return new Signature(this, sig); }; /** - * Internal function that splits a string path into a derivation index array. - * It will return null if the string path is malformed. - * It does not validate if indexes are in bounds. - * - * @param {string} path - * @return {Array} - */ -HDPrivateKey._getDerivationIndexes = function(path) { - var steps = path.split('/'); +* * https://tools.ietf.org/html/draft-josefsson-eddsa-ed25519-03#section-5.2 +* +* EDDSA defines methods for encoding and decoding points and integers. These are +* helper convenience methods, that pass along to utility functions implied +* parameters. +* +*/ +EDDSA.prototype.encodePoint = function encodePoint(point) { + var enc = point.getY().toArray('le', this.encodingLength); + enc[this.encodingLength - 1] |= point.getX().isOdd() ? 0x80 : 0; + return enc; +}; - // Special cases: - if (_.includes(HDPrivateKey.RootElementAlias, path)) { - return []; - } +EDDSA.prototype.decodePoint = function decodePoint(bytes) { + bytes = utils.parseBytes(bytes); - if (!_.includes(HDPrivateKey.RootElementAlias, steps[0])) { - return null; - } + var lastIx = bytes.length - 1; + var normed = bytes.slice(0, lastIx).concat(bytes[lastIx] & ~0x80); + var xIsOdd = (bytes[lastIx] & 0x80) !== 0; - var indexes = steps.slice(1).map(function(step) { - var isHardened = step.slice(-1) === '\''; - if (isHardened) { - step = step.slice(0, -1); - } - if (!step || step[0] === '-') { - return NaN; - } - var index = +step; // cast to number - if (isHardened) { - index += HDPrivateKey.Hardened; - } + var y = utils.intFromLE(normed); + return this.curve.pointFromY(y, xIsOdd); +}; - return index; - }); +EDDSA.prototype.encodeInt = function encodeInt(num) { + return num.toArray('le', this.encodingLength); +}; - return _.some(indexes, isNaN) ? null : indexes; +EDDSA.prototype.decodeInt = function decodeInt(bytes) { + return utils.intFromLE(bytes); }; -/** - * WARNING: This method is deprecated. Use deriveChild or deriveNonCompliantChild instead. This is not BIP32 compliant - * - * - * Get a derived child based on a string or number. - * - * If the first argument is a string, it's parsed as the full path of - * derivation. Valid values for this argument include "m" (which returns the - * same private key), "m/0/1/40/2'/1000", where the ' quote means a hardened - * derivation. - * - * If the first argument is a number, the child with that index will be - * derived. If the second argument is truthy, the hardened version will be - * derived. See the example usage for clarification. - * - * @example - * ```javascript - * var parent = new HDPrivateKey('xprv...'); - * var child_0_1_2h = parent.derive(0).derive(1).derive(2, true); - * var copy_of_child_0_1_2h = parent.derive("m/0/1/2'"); - * assert(child_0_1_2h.xprivkey === copy_of_child_0_1_2h); - * ``` - * - * @param {string|number} arg - * @param {boolean?} hardened - */ -HDPrivateKey.prototype.derive = function(arg, hardened) { - return this.deriveNonCompliantChild(arg, hardened); +EDDSA.prototype.isPoint = function isPoint(val) { + return val instanceof this.pointClass; }; +},{"../../elliptic":119,"./key":130,"./signature":131,"hash.js":138}],130:[function(require,module,exports){ +'use strict'; + +var elliptic = require('../../elliptic'); +var utils = elliptic.utils; +var assert = utils.assert; +var parseBytes = utils.parseBytes; +var cachedProperty = utils.cachedProperty; + /** - * WARNING: This method will not be officially supported until v1.0.0. - * - * - * Get a derived child based on a string or number. - * - * If the first argument is a string, it's parsed as the full path of - * derivation. Valid values for this argument include "m" (which returns the - * same private key), "m/0/1/40/2'/1000", where the ' quote means a hardened - * derivation. - * - * If the first argument is a number, the child with that index will be - * derived. If the second argument is truthy, the hardened version will be - * derived. See the example usage for clarification. - * - * WARNING: The `nonCompliant` option should NOT be used, except for older implementation - * that used a derivation strategy that used a non-zero padded private key. - * - * @example - * ```javascript - * var parent = new HDPrivateKey('xprv...'); - * var child_0_1_2h = parent.deriveChild(0).deriveChild(1).deriveChild(2, true); - * var copy_of_child_0_1_2h = parent.deriveChild("m/0/1/2'"); - * assert(child_0_1_2h.xprivkey === copy_of_child_0_1_2h); - * ``` - * - * @param {string|number} arg - * @param {boolean?} hardened - */ -HDPrivateKey.prototype.deriveChild = function(arg, hardened) { - if (_.isNumber(arg)) { - return this._deriveWithNumber(arg, hardened); - } else if (_.isString(arg)) { - return this._deriveFromString(arg); - } else { - throw new hdErrors.InvalidDerivationArgument(arg); - } +* @param {EDDSA} eddsa - instance +* @param {Object} params - public/private key parameters +* +* @param {Array} [params.secret] - secret seed bytes +* @param {Point} [params.pub] - public key point (aka `A` in eddsa terms) +* @param {Array} [params.pub] - public key point encoded as bytes +* +*/ +function KeyPair(eddsa, params) { + this.eddsa = eddsa; + this._secret = parseBytes(params.secret); + if (eddsa.isPoint(params.pub)) + this._pub = params.pub; + else + this._pubBytes = parseBytes(params.pub); +} + +KeyPair.fromPublic = function fromPublic(eddsa, pub) { + if (pub instanceof KeyPair) + return pub; + return new KeyPair(eddsa, { pub: pub }); }; -/** - * WARNING: This method will not be officially supported until v1.0.0 - * - * - * WARNING: If this is a new implementation you should NOT use this method, you should be using - * `derive` instead. - * - * This method is explicitly for use and compatibility with an implementation that - * was not compliant with BIP32 regarding the derivation algorithm. The private key - * must be 32 bytes hashing, and this implementation will use the non-zero padded - * serialization of a private key, such that it's still possible to derive the privateKey - * to recover those funds. - * - * @param {string|number} arg - * @param {boolean?} hardened - */ -HDPrivateKey.prototype.deriveNonCompliantChild = function(arg, hardened) { - if (_.isNumber(arg)) { - return this._deriveWithNumber(arg, hardened, true); - } else if (_.isString(arg)) { - return this._deriveFromString(arg, true); - } else { - throw new hdErrors.InvalidDerivationArgument(arg); - } +KeyPair.fromSecret = function fromSecret(eddsa, secret) { + if (secret instanceof KeyPair) + return secret; + return new KeyPair(eddsa, { secret: secret }); }; -HDPrivateKey.prototype._deriveWithNumber = function(index, hardened, nonCompliant) { - /* jshint maxstatements: 20 */ - /* jshint maxcomplexity: 10 */ - if (!HDPrivateKey.isValidPath(index, hardened)) { - throw new hdErrors.InvalidPath(index); - } +KeyPair.prototype.secret = function secret() { + return this._secret; +}; - hardened = index >= HDPrivateKey.Hardened ? true : hardened; - if (index < HDPrivateKey.Hardened && hardened === true) { - index += HDPrivateKey.Hardened; - } +cachedProperty(KeyPair, 'pubBytes', function pubBytes() { + return this.eddsa.encodePoint(this.pub()); +}); - var indexBuffer = BufferUtil.integerAsBuffer(index); - var data; - if (hardened && nonCompliant) { - // The private key serialization in this case will not be exactly 32 bytes and can be - // any value less, and the value is not zero-padded. - var nonZeroPadded = this.privateKey.bn.toBuffer(); - data = BufferUtil.concat([new buffer.Buffer([0]), nonZeroPadded, indexBuffer]); - } else if (hardened) { - // This will use a 32 byte zero padded serialization of the private key - var privateKeyBuffer = this.privateKey.bn.toBuffer({size: 32}); - assert(privateKeyBuffer.length === 32, 'length of private key buffer is expected to be 32 bytes'); - data = BufferUtil.concat([new buffer.Buffer([0]), privateKeyBuffer, indexBuffer]); - } else { - data = BufferUtil.concat([this.publicKey.toBuffer(), indexBuffer]); - } - var hash = Hash.sha512hmac(data, this._buffers.chainCode); - var leftPart = BN.fromBuffer(hash.slice(0, 32), { - size: 32 - }); - var chainCode = hash.slice(32, 64); +cachedProperty(KeyPair, 'pub', function pub() { + if (this._pubBytes) + return this.eddsa.decodePoint(this._pubBytes); + return this.eddsa.g.mul(this.priv()); +}); - var privateKey = leftPart.add(this.privateKey.toBigNumber()).umod(Point.getN()).toBuffer({ - size: 32 - }); - - if (!PrivateKey.isValid(privateKey)) { - // Index at this point is already hardened, we can pass null as the hardened arg - return this._deriveWithNumber(index + 1, null, nonCompliant); - } - - var derived = new HDPrivateKey({ - network: this.network, - depth: this.depth + 1, - parentFingerPrint: this.fingerPrint, - childIndex: index, - chainCode: chainCode, - privateKey: privateKey - }); - - return derived; -}; - -HDPrivateKey.prototype._deriveFromString = function(path, nonCompliant) { - if (!HDPrivateKey.isValidPath(path)) { - throw new hdErrors.InvalidPath(path); - } - - var indexes = HDPrivateKey._getDerivationIndexes(path); - var derived = indexes.reduce(function(prev, index) { - return prev._deriveWithNumber(index, null, nonCompliant); - }, this); - - return derived; -}; - -/** - * Verifies that a given serialized private key in base58 with checksum format - * is valid. - * - * @param {string|Buffer} data - the serialized private key - * @param {string|Network=} network - optional, if present, checks that the - * network provided matches the network serialized. - * @return {boolean} - */ -HDPrivateKey.isValidSerialized = function(data, network) { - return !HDPrivateKey.getSerializedError(data, network); -}; +cachedProperty(KeyPair, 'privBytes', function privBytes() { + var eddsa = this.eddsa; + var hash = this.hash(); + var lastIx = eddsa.encodingLength - 1; -/** - * Checks what's the error that causes the validation of a serialized private key - * in base58 with checksum to fail. - * - * @param {string|Buffer} data - the serialized private key - * @param {string|Network=} network - optional, if present, checks that the - * network provided matches the network serialized. - * @return {errors.InvalidArgument|null} - */ -HDPrivateKey.getSerializedError = function(data, network) { - /* jshint maxcomplexity: 10 */ - if (!(_.isString(data) || BufferUtil.isBuffer(data))) { - return new hdErrors.UnrecognizedArgument('Expected string or buffer'); - } - if (!Base58.validCharacters(data)) { - return new errors.InvalidB58Char('(unknown)', data); - } - try { - data = Base58Check.decode(data); - } catch (e) { - return new errors.InvalidB58Checksum(data); - } - if (data.length !== HDPrivateKey.DataLength) { - return new hdErrors.InvalidLength(data); - } - if (!_.isUndefined(network)) { - var error = HDPrivateKey._validateNetwork(data, network); - if (error) { - return error; - } - } - return null; -}; + var a = hash.slice(0, eddsa.encodingLength); + a[0] &= 248; + a[lastIx] &= 127; + a[lastIx] |= 64; -HDPrivateKey._validateNetwork = function(data, networkArg) { - var network = Network.get(networkArg); - if (!network) { - return new errors.InvalidNetworkArgument(networkArg); - } - var version = data.slice(0, 4); - if (BufferUtil.integerFromBuffer(version) !== network.xprivkey) { - return new errors.InvalidNetwork(version); - } - return null; -}; + return a; +}); -HDPrivateKey.fromString = function(arg) { - $.checkArgument(_.isString(arg), 'No valid string was provided'); - return new HDPrivateKey(arg); -}; +cachedProperty(KeyPair, 'priv', function priv() { + return this.eddsa.decodeInt(this.privBytes()); +}); -HDPrivateKey.fromObject = function(arg) { - $.checkArgument(_.isObject(arg), 'No valid argument was provided'); - return new HDPrivateKey(arg); -}; +cachedProperty(KeyPair, 'hash', function hash() { + return this.eddsa.hash().update(this.secret()).digest(); +}); -HDPrivateKey.prototype._buildFromJSON = function(arg) { - return this._buildFromObject(JSON.parse(arg)); -}; +cachedProperty(KeyPair, 'messagePrefix', function messagePrefix() { + return this.hash().slice(this.eddsa.encodingLength); +}); -HDPrivateKey.prototype._buildFromObject = function(arg) { - /* jshint maxcomplexity: 12 */ - // TODO: Type validation - var buffers = { - version: arg.network ? BufferUtil.integerAsBuffer(Network.get(arg.network).xprivkey) : arg.version, - depth: _.isNumber(arg.depth) ? BufferUtil.integerAsSingleByteBuffer(arg.depth) : arg.depth, - parentFingerPrint: _.isNumber(arg.parentFingerPrint) ? BufferUtil.integerAsBuffer(arg.parentFingerPrint) : arg.parentFingerPrint, - childIndex: _.isNumber(arg.childIndex) ? BufferUtil.integerAsBuffer(arg.childIndex) : arg.childIndex, - chainCode: _.isString(arg.chainCode) ? BufferUtil.hexToBuffer(arg.chainCode) : arg.chainCode, - privateKey: (_.isString(arg.privateKey) && JSUtil.isHexa(arg.privateKey)) ? BufferUtil.hexToBuffer(arg.privateKey) : arg.privateKey, - checksum: arg.checksum ? (arg.checksum.length ? arg.checksum : BufferUtil.integerAsBuffer(arg.checksum)) : undefined - }; - return this._buildFromBuffers(buffers); +KeyPair.prototype.sign = function sign(message) { + assert(this._secret, 'KeyPair can only verify'); + return this.eddsa.sign(message, this); }; -HDPrivateKey.prototype._buildFromSerialized = function(arg) { - var decoded = Base58Check.decode(arg); - var buffers = { - version: decoded.slice(HDPrivateKey.VersionStart, HDPrivateKey.VersionEnd), - depth: decoded.slice(HDPrivateKey.DepthStart, HDPrivateKey.DepthEnd), - parentFingerPrint: decoded.slice(HDPrivateKey.ParentFingerPrintStart, - HDPrivateKey.ParentFingerPrintEnd), - childIndex: decoded.slice(HDPrivateKey.ChildIndexStart, HDPrivateKey.ChildIndexEnd), - chainCode: decoded.slice(HDPrivateKey.ChainCodeStart, HDPrivateKey.ChainCodeEnd), - privateKey: decoded.slice(HDPrivateKey.PrivateKeyStart, HDPrivateKey.PrivateKeyEnd), - checksum: decoded.slice(HDPrivateKey.ChecksumStart, HDPrivateKey.ChecksumEnd), - xprivkey: arg - }; - return this._buildFromBuffers(buffers); +KeyPair.prototype.verify = function verify(message, sig) { + return this.eddsa.verify(message, sig, this); }; -HDPrivateKey.prototype._generateRandomly = function(network) { - return HDPrivateKey.fromSeed(Random.getRandomBuffer(64), network); +KeyPair.prototype.getSecret = function getSecret(enc) { + assert(this._secret, 'KeyPair is public only'); + return utils.encode(this.secret(), enc); }; -/** - * Generate a private key from a seed, as described in BIP32 - * - * @param {string|Buffer} hexa - * @param {*} network - * @return HDPrivateKey - */ -HDPrivateKey.fromSeed = function(hexa, network) { - /* jshint maxcomplexity: 8 */ - if (JSUtil.isHexaString(hexa)) { - hexa = BufferUtil.hexToBuffer(hexa); - } - if (!Buffer.isBuffer(hexa)) { - throw new hdErrors.InvalidEntropyArgument(hexa); - } - if (hexa.length < MINIMUM_ENTROPY_BITS * BITS_TO_BYTES) { - throw new hdErrors.InvalidEntropyArgument.NotEnoughEntropy(hexa); - } - if (hexa.length > MAXIMUM_ENTROPY_BITS * BITS_TO_BYTES) { - throw new hdErrors.InvalidEntropyArgument.TooMuchEntropy(hexa); - } - var hash = Hash.sha512hmac(hexa, new buffer.Buffer('Bitcoin seed')); - - return new HDPrivateKey({ - network: Network.get(network) || Network.defaultNetwork, - depth: 0, - parentFingerPrint: 0, - childIndex: 0, - privateKey: hash.slice(0, 32), - chainCode: hash.slice(32, 64) - }); +KeyPair.prototype.getPublic = function getPublic(enc) { + return utils.encode(this.pubBytes(), enc); }; +module.exports = KeyPair; +},{"../../elliptic":119}],131:[function(require,module,exports){ +'use strict'; -HDPrivateKey.prototype._calcHDPublicKey = function() { - if (!this._hdPublicKey) { - var HDPublicKey = require('./hdpublickey'); - this._hdPublicKey = new HDPublicKey(this); - } -}; +var BN = require('bn.js'); +var elliptic = require('../../elliptic'); +var utils = elliptic.utils; +var assert = utils.assert; +var cachedProperty = utils.cachedProperty; +var parseBytes = utils.parseBytes; /** - * Receives a object with buffers in all the properties and populates the - * internal structure - * - * @param {Object} arg - * @param {buffer.Buffer} arg.version - * @param {buffer.Buffer} arg.depth - * @param {buffer.Buffer} arg.parentFingerPrint - * @param {buffer.Buffer} arg.childIndex - * @param {buffer.Buffer} arg.chainCode - * @param {buffer.Buffer} arg.privateKey - * @param {buffer.Buffer} arg.checksum - * @param {string=} arg.xprivkey - if set, don't recalculate the base58 - * representation - * @return {HDPrivateKey} this - */ -HDPrivateKey.prototype._buildFromBuffers = function(arg) { - /* jshint maxcomplexity: 8 */ - /* jshint maxstatements: 20 */ - - HDPrivateKey._validateBufferArguments(arg); +* @param {EDDSA} eddsa - eddsa instance +* @param {Array|Object} sig - +* @param {Array|Point} [sig.R] - R point as Point or bytes +* @param {Array|bn} [sig.S] - S scalar as bn or bytes +* @param {Array} [sig.Rencoded] - R point encoded +* @param {Array} [sig.Sencoded] - S scalar encoded +*/ +function Signature(eddsa, sig) { + this.eddsa = eddsa; - JSUtil.defineImmutable(this, { - _buffers: arg - }); + if (typeof sig !== 'object') + sig = parseBytes(sig); - var sequence = [ - arg.version, arg.depth, arg.parentFingerPrint, arg.childIndex, arg.chainCode, - BufferUtil.emptyBuffer(1), arg.privateKey - ]; - var concat = buffer.Buffer.concat(sequence); - if (!arg.checksum || !arg.checksum.length) { - arg.checksum = Base58Check.checksum(concat); - } else { - if (arg.checksum.toString() !== Base58Check.checksum(concat).toString()) { - throw new errors.InvalidB58Checksum(concat); - } + if (Array.isArray(sig)) { + sig = { + R: sig.slice(0, eddsa.encodingLength), + S: sig.slice(eddsa.encodingLength) + }; } - var network = Network.get(BufferUtil.integerFromBuffer(arg.version)); - var xprivkey; - xprivkey = Base58Check.encode(buffer.Buffer.concat(sequence)); - arg.xprivkey = Buffer.from(xprivkey); - - var privateKey = new PrivateKey(BN.fromBuffer(arg.privateKey), network); - var publicKey = privateKey.toPublicKey(); - var size = HDPrivateKey.ParentFingerPrintSize; - var fingerPrint = Hash.sha256ripemd160(publicKey.toBuffer()).slice(0, size); - - JSUtil.defineImmutable(this, { - xprivkey: xprivkey, - network: network, - depth: BufferUtil.integerFromSingleByteBuffer(arg.depth), - privateKey: privateKey, - publicKey: publicKey, - fingerPrint: fingerPrint - }); + assert(sig.R && sig.S, 'Signature without R or S'); - this._hdPublicKey = null; + if (eddsa.isPoint(sig.R)) + this._R = sig.R; + if (sig.S instanceof BN) + this._S = sig.S; - Object.defineProperty(this, 'hdPublicKey', { - configurable: false, - enumerable: true, - get: function() { - this._calcHDPublicKey(); - return this._hdPublicKey; - } - }); - Object.defineProperty(this, 'xpubkey', { - configurable: false, - enumerable: true, - get: function() { - this._calcHDPublicKey(); - return this._hdPublicKey.xpubkey; - } - }); - return this; -}; + this._Rencoded = Array.isArray(sig.R) ? sig.R : sig.Rencoded; + this._Sencoded = Array.isArray(sig.S) ? sig.S : sig.Sencoded; +} -HDPrivateKey._validateBufferArguments = function(arg) { - var checkBuffer = function(name, size) { - var buff = arg[name]; - assert(BufferUtil.isBuffer(buff), name + ' argument is not a buffer'); - assert( - buff.length === size, - name + ' has not the expected size: found ' + buff.length + ', expected ' + size - ); - }; - checkBuffer('version', HDPrivateKey.VersionSize); - checkBuffer('depth', HDPrivateKey.DepthSize); - checkBuffer('parentFingerPrint', HDPrivateKey.ParentFingerPrintSize); - checkBuffer('childIndex', HDPrivateKey.ChildIndexSize); - checkBuffer('chainCode', HDPrivateKey.ChainCodeSize); - checkBuffer('privateKey', HDPrivateKey.PrivateKeySize); - if (arg.checksum && arg.checksum.length) { - checkBuffer('checksum', HDPrivateKey.CheckSumSize); - } -}; +cachedProperty(Signature, 'S', function S() { + return this.eddsa.decodeInt(this.Sencoded()); +}); -/** - * Returns the string representation of this private key (a string starting - * with "xprv..." - * - * @return string - */ -HDPrivateKey.prototype.toString = function() { - return this.xprivkey; -}; +cachedProperty(Signature, 'R', function R() { + return this.eddsa.decodePoint(this.Rencoded()); +}); -/** - * Returns the console representation of this extended private key. - * @return string - */ -HDPrivateKey.prototype.inspect = function() { - return ''; -}; +cachedProperty(Signature, 'Rencoded', function Rencoded() { + return this.eddsa.encodePoint(this.R()); +}); -/** - * Returns a plain object with a representation of this private key. - * - * Fields include:
    - *
  • network: either 'livenet' or 'testnet' - *
  • depth: a number ranging from 0 to 255 - *
  • fingerPrint: a number ranging from 0 to 2^32-1, taken from the hash of the - *
  • associated public key - *
  • parentFingerPrint: a number ranging from 0 to 2^32-1, taken from the hash - *
  • of this parent's associated public key or zero. - *
  • childIndex: the index from which this child was derived (or zero) - *
  • chainCode: an hexa string representing a number used in the derivation - *
  • privateKey: the private key associated, in hexa representation - *
  • xprivkey: the representation of this extended private key in checksum - *
  • base58 format - *
  • checksum: the base58 checksum of xprivkey - *
- * @return {Object} - */ -HDPrivateKey.prototype.toObject = HDPrivateKey.prototype.toJSON = function toObject() { - return { - network: Network.get(BufferUtil.integerFromBuffer(this._buffers.version), 'xprivkey').name, - depth: BufferUtil.integerFromSingleByteBuffer(this._buffers.depth), - fingerPrint: BufferUtil.integerFromBuffer(this.fingerPrint), - parentFingerPrint: BufferUtil.integerFromBuffer(this._buffers.parentFingerPrint), - childIndex: BufferUtil.integerFromBuffer(this._buffers.childIndex), - chainCode: BufferUtil.bufferToHex(this._buffers.chainCode), - privateKey: this.privateKey.toBuffer().toString('hex'), - checksum: BufferUtil.integerFromBuffer(this._buffers.checksum), - xprivkey: this.xprivkey - }; -}; +cachedProperty(Signature, 'Sencoded', function Sencoded() { + return this.eddsa.encodeInt(this.S()); +}); -/** - * Build a HDPrivateKey from a buffer - * - * @param {Buffer} arg - * @return {HDPrivateKey} - */ -HDPrivateKey.fromBuffer = function(arg) { - return new HDPrivateKey(arg.toString()); +Signature.prototype.toBytes = function toBytes() { + return this.Rencoded().concat(this.Sencoded()); }; -/** - * Returns a buffer representation of the HDPrivateKey - * - * @return {string} - */ -HDPrivateKey.prototype.toBuffer = function() { - return BufferUtil.copy(this._buffers.xprivkey); +Signature.prototype.toHex = function toHex() { + return utils.encode(this.toBytes(), 'hex').toUpperCase(); }; -HDPrivateKey.DefaultDepth = 0; -HDPrivateKey.DefaultFingerprint = 0; -HDPrivateKey.DefaultChildIndex = 0; -HDPrivateKey.Hardened = 0x80000000; -HDPrivateKey.MaxIndex = 2 * HDPrivateKey.Hardened; - -HDPrivateKey.RootElementAlias = ['m', 'M', 'm\'', 'M\'']; - -HDPrivateKey.VersionSize = 4; -HDPrivateKey.DepthSize = 1; -HDPrivateKey.ParentFingerPrintSize = 4; -HDPrivateKey.ChildIndexSize = 4; -HDPrivateKey.ChainCodeSize = 32; -HDPrivateKey.PrivateKeySize = 32; -HDPrivateKey.CheckSumSize = 4; - -HDPrivateKey.DataLength = 78; -HDPrivateKey.SerializedByteSize = 82; - -HDPrivateKey.VersionStart = 0; -HDPrivateKey.VersionEnd = HDPrivateKey.VersionStart + HDPrivateKey.VersionSize; -HDPrivateKey.DepthStart = HDPrivateKey.VersionEnd; -HDPrivateKey.DepthEnd = HDPrivateKey.DepthStart + HDPrivateKey.DepthSize; -HDPrivateKey.ParentFingerPrintStart = HDPrivateKey.DepthEnd; -HDPrivateKey.ParentFingerPrintEnd = HDPrivateKey.ParentFingerPrintStart + HDPrivateKey.ParentFingerPrintSize; -HDPrivateKey.ChildIndexStart = HDPrivateKey.ParentFingerPrintEnd; -HDPrivateKey.ChildIndexEnd = HDPrivateKey.ChildIndexStart + HDPrivateKey.ChildIndexSize; -HDPrivateKey.ChainCodeStart = HDPrivateKey.ChildIndexEnd; -HDPrivateKey.ChainCodeEnd = HDPrivateKey.ChainCodeStart + HDPrivateKey.ChainCodeSize; -HDPrivateKey.PrivateKeyStart = HDPrivateKey.ChainCodeEnd + 1; -HDPrivateKey.PrivateKeyEnd = HDPrivateKey.PrivateKeyStart + HDPrivateKey.PrivateKeySize; -HDPrivateKey.ChecksumStart = HDPrivateKey.PrivateKeyEnd; -HDPrivateKey.ChecksumEnd = HDPrivateKey.ChecksumStart + HDPrivateKey.CheckSumSize; - -assert(HDPrivateKey.ChecksumEnd === HDPrivateKey.SerializedByteSize); - -module.exports = HDPrivateKey; - -}).call(this,require("buffer").Buffer) -},{"./crypto/bn":169,"./crypto/hash":171,"./crypto/point":172,"./crypto/random":173,"./encoding/base58":175,"./encoding/base58check":176,"./errors":180,"./hdpublickey":183,"./networks":184,"./privatekey":186,"./util/buffer":206,"./util/js":207,"./util/preconditions":208,"assert":15,"buffer":52,"lodash":245}],183:[function(require,module,exports){ -(function (Buffer){ -'use strict'; - -var _ = require('lodash'); -var $ = require('./util/preconditions'); - -var BN = require('./crypto/bn'); -var Base58 = require('./encoding/base58'); -var Base58Check = require('./encoding/base58check'); -var Hash = require('./crypto/hash'); -var HDPrivateKey = require('./hdprivatekey'); -var Network = require('./networks'); -var Point = require('./crypto/point'); -var PublicKey = require('./publickey'); - -var bitcoreErrors = require('./errors'); -var errors = bitcoreErrors; -var hdErrors = bitcoreErrors.HDPublicKey; -var assert = require('assert'); - -var JSUtil = require('./util/js'); -var BufferUtil = require('./util/buffer'); - -/** - * The representation of an hierarchically derived public key. - * - * See https://github.com/bitcoin/bips/blob/master/bip-0032.mediawiki - * - * @constructor - * @param {Object|string|Buffer} arg - */ -function HDPublicKey(arg) { - /* jshint maxcomplexity: 12 */ - /* jshint maxstatements: 20 */ - if (arg instanceof HDPublicKey) { - return arg; - } - if (!(this instanceof HDPublicKey)) { - return new HDPublicKey(arg); - } - if (arg) { - if (_.isString(arg) || BufferUtil.isBuffer(arg)) { - var error = HDPublicKey.getSerializedError(arg); - if (!error) { - return this._buildFromSerialized(arg); - } else if (BufferUtil.isBuffer(arg) && !HDPublicKey.getSerializedError(arg.toString())) { - return this._buildFromSerialized(arg.toString()); - } else { - if (error instanceof hdErrors.ArgumentIsPrivateExtended) { - return new HDPrivateKey(arg).hdPublicKey; - } - throw error; - } - } else { - if (_.isObject(arg)) { - if (arg instanceof HDPrivateKey) { - return this._buildFromPrivate(arg); - } else { - return this._buildFromObject(arg); - } - } else { - throw new hdErrors.UnrecognizedArgument(arg); - } - } - } else { - throw new hdErrors.MustSupplyArgument(); - } -} +module.exports = Signature; -/** - * Verifies that a given path is valid. - * - * @param {string|number} arg - * @return {boolean} - */ -HDPublicKey.isValidPath = function(arg) { - if (_.isString(arg)) { - var indexes = HDPrivateKey._getDerivationIndexes(arg); - return indexes !== null && _.every(indexes, HDPublicKey.isValidPath); - } - - if (_.isNumber(arg)) { - return arg >= 0 && arg < HDPublicKey.Hardened; - } - - return false; -}; - -/** - * WARNING: This method is deprecated. Use deriveChild instead. - * - * - * Get a derivated child based on a string or number. - * - * If the first argument is a string, it's parsed as the full path of - * derivation. Valid values for this argument include "m" (which returns the - * same public key), "m/0/1/40/2/1000". - * - * Note that hardened keys can't be derived from a public extended key. - * - * If the first argument is a number, the child with that index will be - * derived. See the example usage for clarification. - * - * @example - * ```javascript - * var parent = new HDPublicKey('xpub...'); - * var child_0_1_2 = parent.derive(0).derive(1).derive(2); - * var copy_of_child_0_1_2 = parent.derive("m/0/1/2"); - * assert(child_0_1_2.xprivkey === copy_of_child_0_1_2); - * ``` - * - * @param {string|number} arg - */ -HDPublicKey.prototype.derive = function(arg, hardened) { - return this.deriveChild(arg, hardened); -}; - -/** - * WARNING: This method will not be officially supported until v1.0.0. - * - * - * Get a derivated child based on a string or number. - * - * If the first argument is a string, it's parsed as the full path of - * derivation. Valid values for this argument include "m" (which returns the - * same public key), "m/0/1/40/2/1000". - * - * Note that hardened keys can't be derived from a public extended key. - * - * If the first argument is a number, the child with that index will be - * derived. See the example usage for clarification. - * - * @example - * ```javascript - * var parent = new HDPublicKey('xpub...'); - * var child_0_1_2 = parent.deriveChild(0).deriveChild(1).deriveChild(2); - * var copy_of_child_0_1_2 = parent.deriveChild("m/0/1/2"); - * assert(child_0_1_2.xprivkey === copy_of_child_0_1_2); - * ``` - * - * @param {string|number} arg - */ -HDPublicKey.prototype.deriveChild = function(arg, hardened) { - if (_.isNumber(arg)) { - return this._deriveWithNumber(arg, hardened); - } else if (_.isString(arg)) { - return this._deriveFromString(arg); - } else { - throw new hdErrors.InvalidDerivationArgument(arg); - } -}; - -HDPublicKey.prototype._deriveWithNumber = function(index, hardened) { - if (index >= HDPublicKey.Hardened || hardened) { - throw new hdErrors.InvalidIndexCantDeriveHardened(); - } - if (index < 0) { - throw new hdErrors.InvalidPath(index); - } - - var indexBuffer = BufferUtil.integerAsBuffer(index); - var data = BufferUtil.concat([this.publicKey.toBuffer(), indexBuffer]); - var hash = Hash.sha512hmac(data, this._buffers.chainCode); - var leftPart = BN.fromBuffer(hash.slice(0, 32), {size: 32}); - var chainCode = hash.slice(32, 64); - - var publicKey; - try { - publicKey = PublicKey.fromPoint(Point.getG().mul(leftPart).add(this.publicKey.point)); - } catch (e) { - return this._deriveWithNumber(index + 1); - } - - var derived = new HDPublicKey({ - network: this.network, - depth: this.depth + 1, - parentFingerPrint: this.fingerPrint, - childIndex: index, - chainCode: chainCode, - publicKey: publicKey - }); - - return derived; -}; - -HDPublicKey.prototype._deriveFromString = function(path) { - /* jshint maxcomplexity: 8 */ - if (_.includes(path, "'")) { - throw new hdErrors.InvalidIndexCantDeriveHardened(); - } else if (!HDPublicKey.isValidPath(path)) { - throw new hdErrors.InvalidPath(path); +},{"../../elliptic":119,"bn.js":66}],132:[function(require,module,exports){ +module.exports = { + doubles: { + step: 4, + points: [ + [ + 'e60fce93b59e9ec53011aabc21c23e97b2a31369b87a5ae9c44ee89e2a6dec0a', + 'f7e3507399e595929db99f34f57937101296891e44d23f0be1f32cce69616821' + ], + [ + '8282263212c609d9ea2a6e3e172de238d8c39cabd5ac1ca10646e23fd5f51508', + '11f8a8098557dfe45e8256e830b60ace62d613ac2f7b17bed31b6eaff6e26caf' + ], + [ + '175e159f728b865a72f99cc6c6fc846de0b93833fd2222ed73fce5b551e5b739', + 'd3506e0d9e3c79eba4ef97a51ff71f5eacb5955add24345c6efa6ffee9fed695' + ], + [ + '363d90d447b00c9c99ceac05b6262ee053441c7e55552ffe526bad8f83ff4640', + '4e273adfc732221953b445397f3363145b9a89008199ecb62003c7f3bee9de9' + ], + [ + '8b4b5f165df3c2be8c6244b5b745638843e4a781a15bcd1b69f79a55dffdf80c', + '4aad0a6f68d308b4b3fbd7813ab0da04f9e336546162ee56b3eff0c65fd4fd36' + ], + [ + '723cbaa6e5db996d6bf771c00bd548c7b700dbffa6c0e77bcb6115925232fcda', + '96e867b5595cc498a921137488824d6e2660a0653779494801dc069d9eb39f5f' + ], + [ + 'eebfa4d493bebf98ba5feec812c2d3b50947961237a919839a533eca0e7dd7fa', + '5d9a8ca3970ef0f269ee7edaf178089d9ae4cdc3a711f712ddfd4fdae1de8999' + ], + [ + '100f44da696e71672791d0a09b7bde459f1215a29b3c03bfefd7835b39a48db0', + 'cdd9e13192a00b772ec8f3300c090666b7ff4a18ff5195ac0fbd5cd62bc65a09' + ], + [ + 'e1031be262c7ed1b1dc9227a4a04c017a77f8d4464f3b3852c8acde6e534fd2d', + '9d7061928940405e6bb6a4176597535af292dd419e1ced79a44f18f29456a00d' + ], + [ + 'feea6cae46d55b530ac2839f143bd7ec5cf8b266a41d6af52d5e688d9094696d', + 'e57c6b6c97dce1bab06e4e12bf3ecd5c981c8957cc41442d3155debf18090088' + ], + [ + 'da67a91d91049cdcb367be4be6ffca3cfeed657d808583de33fa978bc1ec6cb1', + '9bacaa35481642bc41f463f7ec9780e5dec7adc508f740a17e9ea8e27a68be1d' + ], + [ + '53904faa0b334cdda6e000935ef22151ec08d0f7bb11069f57545ccc1a37b7c0', + '5bc087d0bc80106d88c9eccac20d3c1c13999981e14434699dcb096b022771c8' + ], + [ + '8e7bcd0bd35983a7719cca7764ca906779b53a043a9b8bcaeff959f43ad86047', + '10b7770b2a3da4b3940310420ca9514579e88e2e47fd68b3ea10047e8460372a' + ], + [ + '385eed34c1cdff21e6d0818689b81bde71a7f4f18397e6690a841e1599c43862', + '283bebc3e8ea23f56701de19e9ebf4576b304eec2086dc8cc0458fe5542e5453' + ], + [ + '6f9d9b803ecf191637c73a4413dfa180fddf84a5947fbc9c606ed86c3fac3a7', + '7c80c68e603059ba69b8e2a30e45c4d47ea4dd2f5c281002d86890603a842160' + ], + [ + '3322d401243c4e2582a2147c104d6ecbf774d163db0f5e5313b7e0e742d0e6bd', + '56e70797e9664ef5bfb019bc4ddaf9b72805f63ea2873af624f3a2e96c28b2a0' + ], + [ + '85672c7d2de0b7da2bd1770d89665868741b3f9af7643397721d74d28134ab83', + '7c481b9b5b43b2eb6374049bfa62c2e5e77f17fcc5298f44c8e3094f790313a6' + ], + [ + '948bf809b1988a46b06c9f1919413b10f9226c60f668832ffd959af60c82a0a', + '53a562856dcb6646dc6b74c5d1c3418c6d4dff08c97cd2bed4cb7f88d8c8e589' + ], + [ + '6260ce7f461801c34f067ce0f02873a8f1b0e44dfc69752accecd819f38fd8e8', + 'bc2da82b6fa5b571a7f09049776a1ef7ecd292238051c198c1a84e95b2b4ae17' + ], + [ + 'e5037de0afc1d8d43d8348414bbf4103043ec8f575bfdc432953cc8d2037fa2d', + '4571534baa94d3b5f9f98d09fb990bddbd5f5b03ec481f10e0e5dc841d755bda' + ], + [ + 'e06372b0f4a207adf5ea905e8f1771b4e7e8dbd1c6a6c5b725866a0ae4fce725', + '7a908974bce18cfe12a27bb2ad5a488cd7484a7787104870b27034f94eee31dd' + ], + [ + '213c7a715cd5d45358d0bbf9dc0ce02204b10bdde2a3f58540ad6908d0559754', + '4b6dad0b5ae462507013ad06245ba190bb4850f5f36a7eeddff2c27534b458f2' + ], + [ + '4e7c272a7af4b34e8dbb9352a5419a87e2838c70adc62cddf0cc3a3b08fbd53c', + '17749c766c9d0b18e16fd09f6def681b530b9614bff7dd33e0b3941817dcaae6' + ], + [ + 'fea74e3dbe778b1b10f238ad61686aa5c76e3db2be43057632427e2840fb27b6', + '6e0568db9b0b13297cf674deccb6af93126b596b973f7b77701d3db7f23cb96f' + ], + [ + '76e64113f677cf0e10a2570d599968d31544e179b760432952c02a4417bdde39', + 'c90ddf8dee4e95cf577066d70681f0d35e2a33d2b56d2032b4b1752d1901ac01' + ], + [ + 'c738c56b03b2abe1e8281baa743f8f9a8f7cc643df26cbee3ab150242bcbb891', + '893fb578951ad2537f718f2eacbfbbbb82314eef7880cfe917e735d9699a84c3' + ], + [ + 'd895626548b65b81e264c7637c972877d1d72e5f3a925014372e9f6588f6c14b', + 'febfaa38f2bc7eae728ec60818c340eb03428d632bb067e179363ed75d7d991f' + ], + [ + 'b8da94032a957518eb0f6433571e8761ceffc73693e84edd49150a564f676e03', + '2804dfa44805a1e4d7c99cc9762808b092cc584d95ff3b511488e4e74efdf6e7' + ], + [ + 'e80fea14441fb33a7d8adab9475d7fab2019effb5156a792f1a11778e3c0df5d', + 'eed1de7f638e00771e89768ca3ca94472d155e80af322ea9fcb4291b6ac9ec78' + ], + [ + 'a301697bdfcd704313ba48e51d567543f2a182031efd6915ddc07bbcc4e16070', + '7370f91cfb67e4f5081809fa25d40f9b1735dbf7c0a11a130c0d1a041e177ea1' + ], + [ + '90ad85b389d6b936463f9d0512678de208cc330b11307fffab7ac63e3fb04ed4', + 'e507a3620a38261affdcbd9427222b839aefabe1582894d991d4d48cb6ef150' + ], + [ + '8f68b9d2f63b5f339239c1ad981f162ee88c5678723ea3351b7b444c9ec4c0da', + '662a9f2dba063986de1d90c2b6be215dbbea2cfe95510bfdf23cbf79501fff82' + ], + [ + 'e4f3fb0176af85d65ff99ff9198c36091f48e86503681e3e6686fd5053231e11', + '1e63633ad0ef4f1c1661a6d0ea02b7286cc7e74ec951d1c9822c38576feb73bc' + ], + [ + '8c00fa9b18ebf331eb961537a45a4266c7034f2f0d4e1d0716fb6eae20eae29e', + 'efa47267fea521a1a9dc343a3736c974c2fadafa81e36c54e7d2a4c66702414b' + ], + [ + 'e7a26ce69dd4829f3e10cec0a9e98ed3143d084f308b92c0997fddfc60cb3e41', + '2a758e300fa7984b471b006a1aafbb18d0a6b2c0420e83e20e8a9421cf2cfd51' + ], + [ + 'b6459e0ee3662ec8d23540c223bcbdc571cbcb967d79424f3cf29eb3de6b80ef', + '67c876d06f3e06de1dadf16e5661db3c4b3ae6d48e35b2ff30bf0b61a71ba45' + ], + [ + 'd68a80c8280bb840793234aa118f06231d6f1fc67e73c5a5deda0f5b496943e8', + 'db8ba9fff4b586d00c4b1f9177b0e28b5b0e7b8f7845295a294c84266b133120' + ], + [ + '324aed7df65c804252dc0270907a30b09612aeb973449cea4095980fc28d3d5d', + '648a365774b61f2ff130c0c35aec1f4f19213b0c7e332843967224af96ab7c84' + ], + [ + '4df9c14919cde61f6d51dfdbe5fee5dceec4143ba8d1ca888e8bd373fd054c96', + '35ec51092d8728050974c23a1d85d4b5d506cdc288490192ebac06cad10d5d' + ], + [ + '9c3919a84a474870faed8a9c1cc66021523489054d7f0308cbfc99c8ac1f98cd', + 'ddb84f0f4a4ddd57584f044bf260e641905326f76c64c8e6be7e5e03d4fc599d' + ], + [ + '6057170b1dd12fdf8de05f281d8e06bb91e1493a8b91d4cc5a21382120a959e5', + '9a1af0b26a6a4807add9a2daf71df262465152bc3ee24c65e899be932385a2a8' + ], + [ + 'a576df8e23a08411421439a4518da31880cef0fba7d4df12b1a6973eecb94266', + '40a6bf20e76640b2c92b97afe58cd82c432e10a7f514d9f3ee8be11ae1b28ec8' + ], + [ + '7778a78c28dec3e30a05fe9629de8c38bb30d1f5cf9a3a208f763889be58ad71', + '34626d9ab5a5b22ff7098e12f2ff580087b38411ff24ac563b513fc1fd9f43ac' + ], + [ + '928955ee637a84463729fd30e7afd2ed5f96274e5ad7e5cb09eda9c06d903ac', + 'c25621003d3f42a827b78a13093a95eeac3d26efa8a8d83fc5180e935bcd091f' + ], + [ + '85d0fef3ec6db109399064f3a0e3b2855645b4a907ad354527aae75163d82751', + '1f03648413a38c0be29d496e582cf5663e8751e96877331582c237a24eb1f962' + ], + [ + 'ff2b0dce97eece97c1c9b6041798b85dfdfb6d8882da20308f5404824526087e', + '493d13fef524ba188af4c4dc54d07936c7b7ed6fb90e2ceb2c951e01f0c29907' + ], + [ + '827fbbe4b1e880ea9ed2b2e6301b212b57f1ee148cd6dd28780e5e2cf856e241', + 'c60f9c923c727b0b71bef2c67d1d12687ff7a63186903166d605b68baec293ec' + ], + [ + 'eaa649f21f51bdbae7be4ae34ce6e5217a58fdce7f47f9aa7f3b58fa2120e2b3', + 'be3279ed5bbbb03ac69a80f89879aa5a01a6b965f13f7e59d47a5305ba5ad93d' + ], + [ + 'e4a42d43c5cf169d9391df6decf42ee541b6d8f0c9a137401e23632dda34d24f', + '4d9f92e716d1c73526fc99ccfb8ad34ce886eedfa8d8e4f13a7f7131deba9414' + ], + [ + '1ec80fef360cbdd954160fadab352b6b92b53576a88fea4947173b9d4300bf19', + 'aeefe93756b5340d2f3a4958a7abbf5e0146e77f6295a07b671cdc1cc107cefd' + ], + [ + '146a778c04670c2f91b00af4680dfa8bce3490717d58ba889ddb5928366642be', + 'b318e0ec3354028add669827f9d4b2870aaa971d2f7e5ed1d0b297483d83efd0' + ], + [ + 'fa50c0f61d22e5f07e3acebb1aa07b128d0012209a28b9776d76a8793180eef9', + '6b84c6922397eba9b72cd2872281a68a5e683293a57a213b38cd8d7d3f4f2811' + ], + [ + 'da1d61d0ca721a11b1a5bf6b7d88e8421a288ab5d5bba5220e53d32b5f067ec2', + '8157f55a7c99306c79c0766161c91e2966a73899d279b48a655fba0f1ad836f1' + ], + [ + 'a8e282ff0c9706907215ff98e8fd416615311de0446f1e062a73b0610d064e13', + '7f97355b8db81c09abfb7f3c5b2515888b679a3e50dd6bd6cef7c73111f4cc0c' + ], + [ + '174a53b9c9a285872d39e56e6913cab15d59b1fa512508c022f382de8319497c', + 'ccc9dc37abfc9c1657b4155f2c47f9e6646b3a1d8cb9854383da13ac079afa73' + ], + [ + '959396981943785c3d3e57edf5018cdbe039e730e4918b3d884fdff09475b7ba', + '2e7e552888c331dd8ba0386a4b9cd6849c653f64c8709385e9b8abf87524f2fd' + ], + [ + 'd2a63a50ae401e56d645a1153b109a8fcca0a43d561fba2dbb51340c9d82b151', + 'e82d86fb6443fcb7565aee58b2948220a70f750af484ca52d4142174dcf89405' + ], + [ + '64587e2335471eb890ee7896d7cfdc866bacbdbd3839317b3436f9b45617e073', + 'd99fcdd5bf6902e2ae96dd6447c299a185b90a39133aeab358299e5e9faf6589' + ], + [ + '8481bde0e4e4d885b3a546d3e549de042f0aa6cea250e7fd358d6c86dd45e458', + '38ee7b8cba5404dd84a25bf39cecb2ca900a79c42b262e556d64b1b59779057e' + ], + [ + '13464a57a78102aa62b6979ae817f4637ffcfed3c4b1ce30bcd6303f6caf666b', + '69be159004614580ef7e433453ccb0ca48f300a81d0942e13f495a907f6ecc27' + ], + [ + 'bc4a9df5b713fe2e9aef430bcc1dc97a0cd9ccede2f28588cada3a0d2d83f366', + 'd3a81ca6e785c06383937adf4b798caa6e8a9fbfa547b16d758d666581f33c1' + ], + [ + '8c28a97bf8298bc0d23d8c749452a32e694b65e30a9472a3954ab30fe5324caa', + '40a30463a3305193378fedf31f7cc0eb7ae784f0451cb9459e71dc73cbef9482' + ], + [ + '8ea9666139527a8c1dd94ce4f071fd23c8b350c5a4bb33748c4ba111faccae0', + '620efabbc8ee2782e24e7c0cfb95c5d735b783be9cf0f8e955af34a30e62b945' + ], + [ + 'dd3625faef5ba06074669716bbd3788d89bdde815959968092f76cc4eb9a9787', + '7a188fa3520e30d461da2501045731ca941461982883395937f68d00c644a573' + ], + [ + 'f710d79d9eb962297e4f6232b40e8f7feb2bc63814614d692c12de752408221e', + 'ea98e67232d3b3295d3b535532115ccac8612c721851617526ae47a9c77bfc82' + ] + ] + }, + naf: { + wnd: 7, + points: [ + [ + 'f9308a019258c31049344f85f89d5229b531c845836f99b08601f113bce036f9', + '388f7b0f632de8140fe337e62a37f3566500a99934c2231b6cb9fd7584b8e672' + ], + [ + '2f8bde4d1a07209355b4a7250a5c5128e88b84bddc619ab7cba8d569b240efe4', + 'd8ac222636e5e3d6d4dba9dda6c9c426f788271bab0d6840dca87d3aa6ac62d6' + ], + [ + '5cbdf0646e5db4eaa398f365f2ea7a0e3d419b7e0330e39ce92bddedcac4f9bc', + '6aebca40ba255960a3178d6d861a54dba813d0b813fde7b5a5082628087264da' + ], + [ + 'acd484e2f0c7f65309ad178a9f559abde09796974c57e714c35f110dfc27ccbe', + 'cc338921b0a7d9fd64380971763b61e9add888a4375f8e0f05cc262ac64f9c37' + ], + [ + '774ae7f858a9411e5ef4246b70c65aac5649980be5c17891bbec17895da008cb', + 'd984a032eb6b5e190243dd56d7b7b365372db1e2dff9d6a8301d74c9c953c61b' + ], + [ + 'f28773c2d975288bc7d1d205c3748651b075fbc6610e58cddeeddf8f19405aa8', + 'ab0902e8d880a89758212eb65cdaf473a1a06da521fa91f29b5cb52db03ed81' + ], + [ + 'd7924d4f7d43ea965a465ae3095ff41131e5946f3c85f79e44adbcf8e27e080e', + '581e2872a86c72a683842ec228cc6defea40af2bd896d3a5c504dc9ff6a26b58' + ], + [ + 'defdea4cdb677750a420fee807eacf21eb9898ae79b9768766e4faa04a2d4a34', + '4211ab0694635168e997b0ead2a93daeced1f4a04a95c0f6cfb199f69e56eb77' + ], + [ + '2b4ea0a797a443d293ef5cff444f4979f06acfebd7e86d277475656138385b6c', + '85e89bc037945d93b343083b5a1c86131a01f60c50269763b570c854e5c09b7a' + ], + [ + '352bbf4a4cdd12564f93fa332ce333301d9ad40271f8107181340aef25be59d5', + '321eb4075348f534d59c18259dda3e1f4a1b3b2e71b1039c67bd3d8bcf81998c' + ], + [ + '2fa2104d6b38d11b0230010559879124e42ab8dfeff5ff29dc9cdadd4ecacc3f', + '2de1068295dd865b64569335bd5dd80181d70ecfc882648423ba76b532b7d67' + ], + [ + '9248279b09b4d68dab21a9b066edda83263c3d84e09572e269ca0cd7f5453714', + '73016f7bf234aade5d1aa71bdea2b1ff3fc0de2a887912ffe54a32ce97cb3402' + ], + [ + 'daed4f2be3a8bf278e70132fb0beb7522f570e144bf615c07e996d443dee8729', + 'a69dce4a7d6c98e8d4a1aca87ef8d7003f83c230f3afa726ab40e52290be1c55' + ], + [ + 'c44d12c7065d812e8acf28d7cbb19f9011ecd9e9fdf281b0e6a3b5e87d22e7db', + '2119a460ce326cdc76c45926c982fdac0e106e861edf61c5a039063f0e0e6482' + ], + [ + '6a245bf6dc698504c89a20cfded60853152b695336c28063b61c65cbd269e6b4', + 'e022cf42c2bd4a708b3f5126f16a24ad8b33ba48d0423b6efd5e6348100d8a82' + ], + [ + '1697ffa6fd9de627c077e3d2fe541084ce13300b0bec1146f95ae57f0d0bd6a5', + 'b9c398f186806f5d27561506e4557433a2cf15009e498ae7adee9d63d01b2396' + ], + [ + '605bdb019981718b986d0f07e834cb0d9deb8360ffb7f61df982345ef27a7479', + '2972d2de4f8d20681a78d93ec96fe23c26bfae84fb14db43b01e1e9056b8c49' + ], + [ + '62d14dab4150bf497402fdc45a215e10dcb01c354959b10cfe31c7e9d87ff33d', + '80fc06bd8cc5b01098088a1950eed0db01aa132967ab472235f5642483b25eaf' + ], + [ + '80c60ad0040f27dade5b4b06c408e56b2c50e9f56b9b8b425e555c2f86308b6f', + '1c38303f1cc5c30f26e66bad7fe72f70a65eed4cbe7024eb1aa01f56430bd57a' + ], + [ + '7a9375ad6167ad54aa74c6348cc54d344cc5dc9487d847049d5eabb0fa03c8fb', + 'd0e3fa9eca8726909559e0d79269046bdc59ea10c70ce2b02d499ec224dc7f7' + ], + [ + 'd528ecd9b696b54c907a9ed045447a79bb408ec39b68df504bb51f459bc3ffc9', + 'eecf41253136e5f99966f21881fd656ebc4345405c520dbc063465b521409933' + ], + [ + '49370a4b5f43412ea25f514e8ecdad05266115e4a7ecb1387231808f8b45963', + '758f3f41afd6ed428b3081b0512fd62a54c3f3afbb5b6764b653052a12949c9a' + ], + [ + '77f230936ee88cbbd73df930d64702ef881d811e0e1498e2f1c13eb1fc345d74', + '958ef42a7886b6400a08266e9ba1b37896c95330d97077cbbe8eb3c7671c60d6' + ], + [ + 'f2dac991cc4ce4b9ea44887e5c7c0bce58c80074ab9d4dbaeb28531b7739f530', + 'e0dedc9b3b2f8dad4da1f32dec2531df9eb5fbeb0598e4fd1a117dba703a3c37' + ], + [ + '463b3d9f662621fb1b4be8fbbe2520125a216cdfc9dae3debcba4850c690d45b', + '5ed430d78c296c3543114306dd8622d7c622e27c970a1de31cb377b01af7307e' + ], + [ + 'f16f804244e46e2a09232d4aff3b59976b98fac14328a2d1a32496b49998f247', + 'cedabd9b82203f7e13d206fcdf4e33d92a6c53c26e5cce26d6579962c4e31df6' + ], + [ + 'caf754272dc84563b0352b7a14311af55d245315ace27c65369e15f7151d41d1', + 'cb474660ef35f5f2a41b643fa5e460575f4fa9b7962232a5c32f908318a04476' + ], + [ + '2600ca4b282cb986f85d0f1709979d8b44a09c07cb86d7c124497bc86f082120', + '4119b88753c15bd6a693b03fcddbb45d5ac6be74ab5f0ef44b0be9475a7e4b40' + ], + [ + '7635ca72d7e8432c338ec53cd12220bc01c48685e24f7dc8c602a7746998e435', + '91b649609489d613d1d5e590f78e6d74ecfc061d57048bad9e76f302c5b9c61' + ], + [ + '754e3239f325570cdbbf4a87deee8a66b7f2b33479d468fbc1a50743bf56cc18', + '673fb86e5bda30fb3cd0ed304ea49a023ee33d0197a695d0c5d98093c536683' + ], + [ + 'e3e6bd1071a1e96aff57859c82d570f0330800661d1c952f9fe2694691d9b9e8', + '59c9e0bba394e76f40c0aa58379a3cb6a5a2283993e90c4167002af4920e37f5' + ], + [ + '186b483d056a033826ae73d88f732985c4ccb1f32ba35f4b4cc47fdcf04aa6eb', + '3b952d32c67cf77e2e17446e204180ab21fb8090895138b4a4a797f86e80888b' + ], + [ + 'df9d70a6b9876ce544c98561f4be4f725442e6d2b737d9c91a8321724ce0963f', + '55eb2dafd84d6ccd5f862b785dc39d4ab157222720ef9da217b8c45cf2ba2417' + ], + [ + '5edd5cc23c51e87a497ca815d5dce0f8ab52554f849ed8995de64c5f34ce7143', + 'efae9c8dbc14130661e8cec030c89ad0c13c66c0d17a2905cdc706ab7399a868' + ], + [ + '290798c2b6476830da12fe02287e9e777aa3fba1c355b17a722d362f84614fba', + 'e38da76dcd440621988d00bcf79af25d5b29c094db2a23146d003afd41943e7a' + ], + [ + 'af3c423a95d9f5b3054754efa150ac39cd29552fe360257362dfdecef4053b45', + 'f98a3fd831eb2b749a93b0e6f35cfb40c8cd5aa667a15581bc2feded498fd9c6' + ], + [ + '766dbb24d134e745cccaa28c99bf274906bb66b26dcf98df8d2fed50d884249a', + '744b1152eacbe5e38dcc887980da38b897584a65fa06cedd2c924f97cbac5996' + ], + [ + '59dbf46f8c94759ba21277c33784f41645f7b44f6c596a58ce92e666191abe3e', + 'c534ad44175fbc300f4ea6ce648309a042ce739a7919798cd85e216c4a307f6e' + ], + [ + 'f13ada95103c4537305e691e74e9a4a8dd647e711a95e73cb62dc6018cfd87b8', + 'e13817b44ee14de663bf4bc808341f326949e21a6a75c2570778419bdaf5733d' + ], + [ + '7754b4fa0e8aced06d4167a2c59cca4cda1869c06ebadfb6488550015a88522c', + '30e93e864e669d82224b967c3020b8fa8d1e4e350b6cbcc537a48b57841163a2' + ], + [ + '948dcadf5990e048aa3874d46abef9d701858f95de8041d2a6828c99e2262519', + 'e491a42537f6e597d5d28a3224b1bc25df9154efbd2ef1d2cbba2cae5347d57e' + ], + [ + '7962414450c76c1689c7b48f8202ec37fb224cf5ac0bfa1570328a8a3d7c77ab', + '100b610ec4ffb4760d5c1fc133ef6f6b12507a051f04ac5760afa5b29db83437' + ], + [ + '3514087834964b54b15b160644d915485a16977225b8847bb0dd085137ec47ca', + 'ef0afbb2056205448e1652c48e8127fc6039e77c15c2378b7e7d15a0de293311' + ], + [ + 'd3cc30ad6b483e4bc79ce2c9dd8bc54993e947eb8df787b442943d3f7b527eaf', + '8b378a22d827278d89c5e9be8f9508ae3c2ad46290358630afb34db04eede0a4' + ], + [ + '1624d84780732860ce1c78fcbfefe08b2b29823db913f6493975ba0ff4847610', + '68651cf9b6da903e0914448c6cd9d4ca896878f5282be4c8cc06e2a404078575' + ], + [ + '733ce80da955a8a26902c95633e62a985192474b5af207da6df7b4fd5fc61cd4', + 'f5435a2bd2badf7d485a4d8b8db9fcce3e1ef8e0201e4578c54673bc1dc5ea1d' + ], + [ + '15d9441254945064cf1a1c33bbd3b49f8966c5092171e699ef258dfab81c045c', + 'd56eb30b69463e7234f5137b73b84177434800bacebfc685fc37bbe9efe4070d' + ], + [ + 'a1d0fcf2ec9de675b612136e5ce70d271c21417c9d2b8aaaac138599d0717940', + 'edd77f50bcb5a3cab2e90737309667f2641462a54070f3d519212d39c197a629' + ], + [ + 'e22fbe15c0af8ccc5780c0735f84dbe9a790badee8245c06c7ca37331cb36980', + 'a855babad5cd60c88b430a69f53a1a7a38289154964799be43d06d77d31da06' + ], + [ + '311091dd9860e8e20ee13473c1155f5f69635e394704eaa74009452246cfa9b3', + '66db656f87d1f04fffd1f04788c06830871ec5a64feee685bd80f0b1286d8374' + ], + [ + '34c1fd04d301be89b31c0442d3e6ac24883928b45a9340781867d4232ec2dbdf', + '9414685e97b1b5954bd46f730174136d57f1ceeb487443dc5321857ba73abee' + ], + [ + 'f219ea5d6b54701c1c14de5b557eb42a8d13f3abbcd08affcc2a5e6b049b8d63', + '4cb95957e83d40b0f73af4544cccf6b1f4b08d3c07b27fb8d8c2962a400766d1' + ], + [ + 'd7b8740f74a8fbaab1f683db8f45de26543a5490bca627087236912469a0b448', + 'fa77968128d9c92ee1010f337ad4717eff15db5ed3c049b3411e0315eaa4593b' + ], + [ + '32d31c222f8f6f0ef86f7c98d3a3335ead5bcd32abdd94289fe4d3091aa824bf', + '5f3032f5892156e39ccd3d7915b9e1da2e6dac9e6f26e961118d14b8462e1661' + ], + [ + '7461f371914ab32671045a155d9831ea8793d77cd59592c4340f86cbc18347b5', + '8ec0ba238b96bec0cbdddcae0aa442542eee1ff50c986ea6b39847b3cc092ff6' + ], + [ + 'ee079adb1df1860074356a25aa38206a6d716b2c3e67453d287698bad7b2b2d6', + '8dc2412aafe3be5c4c5f37e0ecc5f9f6a446989af04c4e25ebaac479ec1c8c1e' + ], + [ + '16ec93e447ec83f0467b18302ee620f7e65de331874c9dc72bfd8616ba9da6b5', + '5e4631150e62fb40d0e8c2a7ca5804a39d58186a50e497139626778e25b0674d' + ], + [ + 'eaa5f980c245f6f038978290afa70b6bd8855897f98b6aa485b96065d537bd99', + 'f65f5d3e292c2e0819a528391c994624d784869d7e6ea67fb18041024edc07dc' + ], + [ + '78c9407544ac132692ee1910a02439958ae04877151342ea96c4b6b35a49f51', + 'f3e0319169eb9b85d5404795539a5e68fa1fbd583c064d2462b675f194a3ddb4' + ], + [ + '494f4be219a1a77016dcd838431aea0001cdc8ae7a6fc688726578d9702857a5', + '42242a969283a5f339ba7f075e36ba2af925ce30d767ed6e55f4b031880d562c' + ], + [ + 'a598a8030da6d86c6bc7f2f5144ea549d28211ea58faa70ebf4c1e665c1fe9b5', + '204b5d6f84822c307e4b4a7140737aec23fc63b65b35f86a10026dbd2d864e6b' + ], + [ + 'c41916365abb2b5d09192f5f2dbeafec208f020f12570a184dbadc3e58595997', + '4f14351d0087efa49d245b328984989d5caf9450f34bfc0ed16e96b58fa9913' + ], + [ + '841d6063a586fa475a724604da03bc5b92a2e0d2e0a36acfe4c73a5514742881', + '73867f59c0659e81904f9a1c7543698e62562d6744c169ce7a36de01a8d6154' + ], + [ + '5e95bb399a6971d376026947f89bde2f282b33810928be4ded112ac4d70e20d5', + '39f23f366809085beebfc71181313775a99c9aed7d8ba38b161384c746012865' + ], + [ + '36e4641a53948fd476c39f8a99fd974e5ec07564b5315d8bf99471bca0ef2f66', + 'd2424b1b1abe4eb8164227b085c9aa9456ea13493fd563e06fd51cf5694c78fc' + ], + [ + '336581ea7bfbbb290c191a2f507a41cf5643842170e914faeab27c2c579f726', + 'ead12168595fe1be99252129b6e56b3391f7ab1410cd1e0ef3dcdcabd2fda224' + ], + [ + '8ab89816dadfd6b6a1f2634fcf00ec8403781025ed6890c4849742706bd43ede', + '6fdcef09f2f6d0a044e654aef624136f503d459c3e89845858a47a9129cdd24e' + ], + [ + '1e33f1a746c9c5778133344d9299fcaa20b0938e8acff2544bb40284b8c5fb94', + '60660257dd11b3aa9c8ed618d24edff2306d320f1d03010e33a7d2057f3b3b6' + ], + [ + '85b7c1dcb3cec1b7ee7f30ded79dd20a0ed1f4cc18cbcfcfa410361fd8f08f31', + '3d98a9cdd026dd43f39048f25a8847f4fcafad1895d7a633c6fed3c35e999511' + ], + [ + '29df9fbd8d9e46509275f4b125d6d45d7fbe9a3b878a7af872a2800661ac5f51', + 'b4c4fe99c775a606e2d8862179139ffda61dc861c019e55cd2876eb2a27d84b' + ], + [ + 'a0b1cae06b0a847a3fea6e671aaf8adfdfe58ca2f768105c8082b2e449fce252', + 'ae434102edde0958ec4b19d917a6a28e6b72da1834aff0e650f049503a296cf2' + ], + [ + '4e8ceafb9b3e9a136dc7ff67e840295b499dfb3b2133e4ba113f2e4c0e121e5', + 'cf2174118c8b6d7a4b48f6d534ce5c79422c086a63460502b827ce62a326683c' + ], + [ + 'd24a44e047e19b6f5afb81c7ca2f69080a5076689a010919f42725c2b789a33b', + '6fb8d5591b466f8fc63db50f1c0f1c69013f996887b8244d2cdec417afea8fa3' + ], + [ + 'ea01606a7a6c9cdd249fdfcfacb99584001edd28abbab77b5104e98e8e3b35d4', + '322af4908c7312b0cfbfe369f7a7b3cdb7d4494bc2823700cfd652188a3ea98d' + ], + [ + 'af8addbf2b661c8a6c6328655eb96651252007d8c5ea31be4ad196de8ce2131f', + '6749e67c029b85f52a034eafd096836b2520818680e26ac8f3dfbcdb71749700' + ], + [ + 'e3ae1974566ca06cc516d47e0fb165a674a3dabcfca15e722f0e3450f45889', + '2aeabe7e4531510116217f07bf4d07300de97e4874f81f533420a72eeb0bd6a4' + ], + [ + '591ee355313d99721cf6993ffed1e3e301993ff3ed258802075ea8ced397e246', + 'b0ea558a113c30bea60fc4775460c7901ff0b053d25ca2bdeee98f1a4be5d196' + ], + [ + '11396d55fda54c49f19aa97318d8da61fa8584e47b084945077cf03255b52984', + '998c74a8cd45ac01289d5833a7beb4744ff536b01b257be4c5767bea93ea57a4' + ], + [ + '3c5d2a1ba39c5a1790000738c9e0c40b8dcdfd5468754b6405540157e017aa7a', + 'b2284279995a34e2f9d4de7396fc18b80f9b8b9fdd270f6661f79ca4c81bd257' + ], + [ + 'cc8704b8a60a0defa3a99a7299f2e9c3fbc395afb04ac078425ef8a1793cc030', + 'bdd46039feed17881d1e0862db347f8cf395b74fc4bcdc4e940b74e3ac1f1b13' + ], + [ + 'c533e4f7ea8555aacd9777ac5cad29b97dd4defccc53ee7ea204119b2889b197', + '6f0a256bc5efdf429a2fb6242f1a43a2d9b925bb4a4b3a26bb8e0f45eb596096' + ], + [ + 'c14f8f2ccb27d6f109f6d08d03cc96a69ba8c34eec07bbcf566d48e33da6593', + 'c359d6923bb398f7fd4473e16fe1c28475b740dd098075e6c0e8649113dc3a38' + ], + [ + 'a6cbc3046bc6a450bac24789fa17115a4c9739ed75f8f21ce441f72e0b90e6ef', + '21ae7f4680e889bb130619e2c0f95a360ceb573c70603139862afd617fa9b9f' + ], + [ + '347d6d9a02c48927ebfb86c1359b1caf130a3c0267d11ce6344b39f99d43cc38', + '60ea7f61a353524d1c987f6ecec92f086d565ab687870cb12689ff1e31c74448' + ], + [ + 'da6545d2181db8d983f7dcb375ef5866d47c67b1bf31c8cf855ef7437b72656a', + '49b96715ab6878a79e78f07ce5680c5d6673051b4935bd897fea824b77dc208a' + ], + [ + 'c40747cc9d012cb1a13b8148309c6de7ec25d6945d657146b9d5994b8feb1111', + '5ca560753be2a12fc6de6caf2cb489565db936156b9514e1bb5e83037e0fa2d4' + ], + [ + '4e42c8ec82c99798ccf3a610be870e78338c7f713348bd34c8203ef4037f3502', + '7571d74ee5e0fb92a7a8b33a07783341a5492144cc54bcc40a94473693606437' + ], + [ + '3775ab7089bc6af823aba2e1af70b236d251cadb0c86743287522a1b3b0dedea', + 'be52d107bcfa09d8bcb9736a828cfa7fac8db17bf7a76a2c42ad961409018cf7' + ], + [ + 'cee31cbf7e34ec379d94fb814d3d775ad954595d1314ba8846959e3e82f74e26', + '8fd64a14c06b589c26b947ae2bcf6bfa0149ef0be14ed4d80f448a01c43b1c6d' + ], + [ + 'b4f9eaea09b6917619f6ea6a4eb5464efddb58fd45b1ebefcdc1a01d08b47986', + '39e5c9925b5a54b07433a4f18c61726f8bb131c012ca542eb24a8ac07200682a' + ], + [ + 'd4263dfc3d2df923a0179a48966d30ce84e2515afc3dccc1b77907792ebcc60e', + '62dfaf07a0f78feb30e30d6295853ce189e127760ad6cf7fae164e122a208d54' + ], + [ + '48457524820fa65a4f8d35eb6930857c0032acc0a4a2de422233eeda897612c4', + '25a748ab367979d98733c38a1fa1c2e7dc6cc07db2d60a9ae7a76aaa49bd0f77' + ], + [ + 'dfeeef1881101f2cb11644f3a2afdfc2045e19919152923f367a1767c11cceda', + 'ecfb7056cf1de042f9420bab396793c0c390bde74b4bbdff16a83ae09a9a7517' + ], + [ + '6d7ef6b17543f8373c573f44e1f389835d89bcbc6062ced36c82df83b8fae859', + 'cd450ec335438986dfefa10c57fea9bcc521a0959b2d80bbf74b190dca712d10' + ], + [ + 'e75605d59102a5a2684500d3b991f2e3f3c88b93225547035af25af66e04541f', + 'f5c54754a8f71ee540b9b48728473e314f729ac5308b06938360990e2bfad125' + ], + [ + 'eb98660f4c4dfaa06a2be453d5020bc99a0c2e60abe388457dd43fefb1ed620c', + '6cb9a8876d9cb8520609af3add26cd20a0a7cd8a9411131ce85f44100099223e' + ], + [ + '13e87b027d8514d35939f2e6892b19922154596941888336dc3563e3b8dba942', + 'fef5a3c68059a6dec5d624114bf1e91aac2b9da568d6abeb2570d55646b8adf1' + ], + [ + 'ee163026e9fd6fe017c38f06a5be6fc125424b371ce2708e7bf4491691e5764a', + '1acb250f255dd61c43d94ccc670d0f58f49ae3fa15b96623e5430da0ad6c62b2' + ], + [ + 'b268f5ef9ad51e4d78de3a750c2dc89b1e626d43505867999932e5db33af3d80', + '5f310d4b3c99b9ebb19f77d41c1dee018cf0d34fd4191614003e945a1216e423' + ], + [ + 'ff07f3118a9df035e9fad85eb6c7bfe42b02f01ca99ceea3bf7ffdba93c4750d', + '438136d603e858a3a5c440c38eccbaddc1d2942114e2eddd4740d098ced1f0d8' + ], + [ + '8d8b9855c7c052a34146fd20ffb658bea4b9f69e0d825ebec16e8c3ce2b526a1', + 'cdb559eedc2d79f926baf44fb84ea4d44bcf50fee51d7ceb30e2e7f463036758' + ], + [ + '52db0b5384dfbf05bfa9d472d7ae26dfe4b851ceca91b1eba54263180da32b63', + 'c3b997d050ee5d423ebaf66a6db9f57b3180c902875679de924b69d84a7b375' + ], + [ + 'e62f9490d3d51da6395efd24e80919cc7d0f29c3f3fa48c6fff543becbd43352', + '6d89ad7ba4876b0b22c2ca280c682862f342c8591f1daf5170e07bfd9ccafa7d' + ], + [ + '7f30ea2476b399b4957509c88f77d0191afa2ff5cb7b14fd6d8e7d65aaab1193', + 'ca5ef7d4b231c94c3b15389a5f6311e9daff7bb67b103e9880ef4bff637acaec' + ], + [ + '5098ff1e1d9f14fb46a210fada6c903fef0fb7b4a1dd1d9ac60a0361800b7a00', + '9731141d81fc8f8084d37c6e7542006b3ee1b40d60dfe5362a5b132fd17ddc0' + ], + [ + '32b78c7de9ee512a72895be6b9cbefa6e2f3c4ccce445c96b9f2c81e2778ad58', + 'ee1849f513df71e32efc3896ee28260c73bb80547ae2275ba497237794c8753c' + ], + [ + 'e2cb74fddc8e9fbcd076eef2a7c72b0ce37d50f08269dfc074b581550547a4f7', + 'd3aa2ed71c9dd2247a62df062736eb0baddea9e36122d2be8641abcb005cc4a4' + ], + [ + '8438447566d4d7bedadc299496ab357426009a35f235cb141be0d99cd10ae3a8', + 'c4e1020916980a4da5d01ac5e6ad330734ef0d7906631c4f2390426b2edd791f' + ], + [ + '4162d488b89402039b584c6fc6c308870587d9c46f660b878ab65c82c711d67e', + '67163e903236289f776f22c25fb8a3afc1732f2b84b4e95dbda47ae5a0852649' + ], + [ + '3fad3fa84caf0f34f0f89bfd2dcf54fc175d767aec3e50684f3ba4a4bf5f683d', + 'cd1bc7cb6cc407bb2f0ca647c718a730cf71872e7d0d2a53fa20efcdfe61826' + ], + [ + '674f2600a3007a00568c1a7ce05d0816c1fb84bf1370798f1c69532faeb1a86b', + '299d21f9413f33b3edf43b257004580b70db57da0b182259e09eecc69e0d38a5' + ], + [ + 'd32f4da54ade74abb81b815ad1fb3b263d82d6c692714bcff87d29bd5ee9f08f', + 'f9429e738b8e53b968e99016c059707782e14f4535359d582fc416910b3eea87' + ], + [ + '30e4e670435385556e593657135845d36fbb6931f72b08cb1ed954f1e3ce3ff6', + '462f9bce619898638499350113bbc9b10a878d35da70740dc695a559eb88db7b' + ], + [ + 'be2062003c51cc3004682904330e4dee7f3dcd10b01e580bf1971b04d4cad297', + '62188bc49d61e5428573d48a74e1c655b1c61090905682a0d5558ed72dccb9bc' + ], + [ + '93144423ace3451ed29e0fb9ac2af211cb6e84a601df5993c419859fff5df04a', + '7c10dfb164c3425f5c71a3f9d7992038f1065224f72bb9d1d902a6d13037b47c' + ], + [ + 'b015f8044f5fcbdcf21ca26d6c34fb8197829205c7b7d2a7cb66418c157b112c', + 'ab8c1e086d04e813744a655b2df8d5f83b3cdc6faa3088c1d3aea1454e3a1d5f' + ], + [ + 'd5e9e1da649d97d89e4868117a465a3a4f8a18de57a140d36b3f2af341a21b52', + '4cb04437f391ed73111a13cc1d4dd0db1693465c2240480d8955e8592f27447a' + ], + [ + 'd3ae41047dd7ca065dbf8ed77b992439983005cd72e16d6f996a5316d36966bb', + 'bd1aeb21ad22ebb22a10f0303417c6d964f8cdd7df0aca614b10dc14d125ac46' + ], + [ + '463e2763d885f958fc66cdd22800f0a487197d0a82e377b49f80af87c897b065', + 'bfefacdb0e5d0fd7df3a311a94de062b26b80c61fbc97508b79992671ef7ca7f' + ], + [ + '7985fdfd127c0567c6f53ec1bb63ec3158e597c40bfe747c83cddfc910641917', + '603c12daf3d9862ef2b25fe1de289aed24ed291e0ec6708703a5bd567f32ed03' + ], + [ + '74a1ad6b5f76e39db2dd249410eac7f99e74c59cb83d2d0ed5ff1543da7703e9', + 'cc6157ef18c9c63cd6193d83631bbea0093e0968942e8c33d5737fd790e0db08' + ], + [ + '30682a50703375f602d416664ba19b7fc9bab42c72747463a71d0896b22f6da3', + '553e04f6b018b4fa6c8f39e7f311d3176290d0e0f19ca73f17714d9977a22ff8' + ], + [ + '9e2158f0d7c0d5f26c3791efefa79597654e7a2b2464f52b1ee6c1347769ef57', + '712fcdd1b9053f09003a3481fa7762e9ffd7c8ef35a38509e2fbf2629008373' + ], + [ + '176e26989a43c9cfeba4029c202538c28172e566e3c4fce7322857f3be327d66', + 'ed8cc9d04b29eb877d270b4878dc43c19aefd31f4eee09ee7b47834c1fa4b1c3' + ], + [ + '75d46efea3771e6e68abb89a13ad747ecf1892393dfc4f1b7004788c50374da8', + '9852390a99507679fd0b86fd2b39a868d7efc22151346e1a3ca4726586a6bed8' + ], + [ + '809a20c67d64900ffb698c4c825f6d5f2310fb0451c869345b7319f645605721', + '9e994980d9917e22b76b061927fa04143d096ccc54963e6a5ebfa5f3f8e286c1' + ], + [ + '1b38903a43f7f114ed4500b4eac7083fdefece1cf29c63528d563446f972c180', + '4036edc931a60ae889353f77fd53de4a2708b26b6f5da72ad3394119daf408f9' + ] + ] } +}; - var indexes = HDPrivateKey._getDerivationIndexes(path); - var derived = indexes.reduce(function(prev, index) { - return prev._deriveWithNumber(index); - }, this); +},{}],133:[function(require,module,exports){ +'use strict'; - return derived; -}; +var utils = exports; +var BN = require('bn.js'); +var minAssert = require('minimalistic-assert'); +var minUtils = require('minimalistic-crypto-utils'); -/** - * Verifies that a given serialized public key in base58 with checksum format - * is valid. - * - * @param {string|Buffer} data - the serialized public key - * @param {string|Network=} network - optional, if present, checks that the - * network provided matches the network serialized. - * @return {boolean} - */ -HDPublicKey.isValidSerialized = function(data, network) { - return _.isNull(HDPublicKey.getSerializedError(data, network)); -}; +utils.assert = minAssert; +utils.toArray = minUtils.toArray; +utils.zero2 = minUtils.zero2; +utils.toHex = minUtils.toHex; +utils.encode = minUtils.encode; -/** - * Checks what's the error that causes the validation of a serialized public key - * in base58 with checksum to fail. - * - * @param {string|Buffer} data - the serialized public key - * @param {string|Network=} network - optional, if present, checks that the - * network provided matches the network serialized. - * @return {errors|null} - */ -HDPublicKey.getSerializedError = function(data, network) { - /* jshint maxcomplexity: 10 */ - /* jshint maxstatements: 20 */ - if (!(_.isString(data) || BufferUtil.isBuffer(data))) { - return new hdErrors.UnrecognizedArgument('expected buffer or string'); - } - if (!Base58.validCharacters(data)) { - return new errors.InvalidB58Char('(unknown)', data); - } - try { - data = Base58Check.decode(data); - } catch (e) { - return new errors.InvalidB58Checksum(data); - } - if (data.length !== HDPublicKey.DataSize) { - return new hdErrors.InvalidLength(data); - } - if (!_.isUndefined(network)) { - var error = HDPublicKey._validateNetwork(data, network); - if (error) { - return error; +// Represent num in a w-NAF form +function getNAF(num, w) { + var naf = []; + var ws = 1 << (w + 1); + var k = num.clone(); + while (k.cmpn(1) >= 0) { + var z; + if (k.isOdd()) { + var mod = k.andln(ws - 1); + if (mod > (ws >> 1) - 1) + z = (ws >> 1) - mod; + else + z = mod; + k.isubn(z); + } else { + z = 0; } - } - var version = BufferUtil.integerFromBuffer(data.slice(0, 4)); - if (version === Network.livenet.xprivkey || version === Network.testnet.xprivkey ) { - return new hdErrors.ArgumentIsPrivateExtended(); - } - return null; -}; + naf.push(z); -HDPublicKey._validateNetwork = function(data, networkArg) { - var network = Network.get(networkArg); - if (!network) { - return new errors.InvalidNetworkArgument(networkArg); - } - var version = data.slice(HDPublicKey.VersionStart, HDPublicKey.VersionEnd); - if (BufferUtil.integerFromBuffer(version) !== network.xpubkey) { - return new errors.InvalidNetwork(version); + // Optimization, shift by word if possible + var shift = (k.cmpn(0) !== 0 && k.andln(ws - 1) === 0) ? (w + 1) : 1; + for (var i = 1; i < shift; i++) + naf.push(0); + k.iushrn(shift); } - return null; -}; - -HDPublicKey.prototype._buildFromPrivate = function (arg) { - var args = _.clone(arg._buffers); - var point = Point.getG().mul(BN.fromBuffer(args.privateKey)); - args.publicKey = Point.pointToCompressed(point); - args.version = BufferUtil.integerAsBuffer(Network.get(BufferUtil.integerFromBuffer(args.version)).xpubkey); - args.privateKey = undefined; - args.checksum = undefined; - args.xprivkey = undefined; - return this._buildFromBuffers(args); -}; - -HDPublicKey.prototype._buildFromObject = function(arg) { - /* jshint maxcomplexity: 10 */ - // TODO: Type validation - var buffers = { - version: arg.network ? BufferUtil.integerAsBuffer(Network.get(arg.network).xpubkey) : arg.version, - depth: _.isNumber(arg.depth) ? BufferUtil.integerAsSingleByteBuffer(arg.depth) : arg.depth, - parentFingerPrint: _.isNumber(arg.parentFingerPrint) ? BufferUtil.integerAsBuffer(arg.parentFingerPrint) : arg.parentFingerPrint, - childIndex: _.isNumber(arg.childIndex) ? BufferUtil.integerAsBuffer(arg.childIndex) : arg.childIndex, - chainCode: _.isString(arg.chainCode) ? BufferUtil.hexToBuffer(arg.chainCode) : arg.chainCode, - publicKey: _.isString(arg.publicKey) ? BufferUtil.hexToBuffer(arg.publicKey) : - BufferUtil.isBuffer(arg.publicKey) ? arg.publicKey : arg.publicKey.toBuffer(), - checksum: _.isNumber(arg.checksum) ? BufferUtil.integerAsBuffer(arg.checksum) : arg.checksum - }; - return this._buildFromBuffers(buffers); -}; - -HDPublicKey.prototype._buildFromSerialized = function(arg) { - var decoded = Base58Check.decode(arg); - var buffers = { - version: decoded.slice(HDPublicKey.VersionStart, HDPublicKey.VersionEnd), - depth: decoded.slice(HDPublicKey.DepthStart, HDPublicKey.DepthEnd), - parentFingerPrint: decoded.slice(HDPublicKey.ParentFingerPrintStart, - HDPublicKey.ParentFingerPrintEnd), - childIndex: decoded.slice(HDPublicKey.ChildIndexStart, HDPublicKey.ChildIndexEnd), - chainCode: decoded.slice(HDPublicKey.ChainCodeStart, HDPublicKey.ChainCodeEnd), - publicKey: decoded.slice(HDPublicKey.PublicKeyStart, HDPublicKey.PublicKeyEnd), - checksum: decoded.slice(HDPublicKey.ChecksumStart, HDPublicKey.ChecksumEnd), - xpubkey: arg - }; - return this._buildFromBuffers(buffers); -}; - -/** - * Receives a object with buffers in all the properties and populates the - * internal structure - * - * @param {Object} arg - * @param {buffer.Buffer} arg.version - * @param {buffer.Buffer} arg.depth - * @param {buffer.Buffer} arg.parentFingerPrint - * @param {buffer.Buffer} arg.childIndex - * @param {buffer.Buffer} arg.chainCode - * @param {buffer.Buffer} arg.publicKey - * @param {buffer.Buffer} arg.checksum - * @param {string=} arg.xpubkey - if set, don't recalculate the base58 - * representation - * @return {HDPublicKey} this - */ -HDPublicKey.prototype._buildFromBuffers = function(arg) { - /* jshint maxcomplexity: 8 */ - /* jshint maxstatements: 20 */ - - HDPublicKey._validateBufferArguments(arg); - JSUtil.defineImmutable(this, { - _buffers: arg - }); + return naf; +} +utils.getNAF = getNAF; - var sequence = [ - arg.version, arg.depth, arg.parentFingerPrint, arg.childIndex, arg.chainCode, - arg.publicKey +// Represent k1, k2 in a Joint Sparse Form +function getJSF(k1, k2) { + var jsf = [ + [], + [] ]; - var concat = BufferUtil.concat(sequence); - var checksum = Base58Check.checksum(concat); - if (!arg.checksum || !arg.checksum.length) { - arg.checksum = checksum; - } else { - if (arg.checksum.toString('hex') !== checksum.toString('hex')) { - throw new errors.InvalidB58Checksum(concat, checksum); - } - } - var network = Network.get(BufferUtil.integerFromBuffer(arg.version)); - - var xpubkey; - xpubkey = Base58Check.encode(BufferUtil.concat(sequence)); - arg.xpubkey = Buffer.from(xpubkey); - var publicKey = new PublicKey(arg.publicKey, {network: network}); - var size = HDPublicKey.ParentFingerPrintSize; - var fingerPrint = Hash.sha256ripemd160(publicKey.toBuffer()).slice(0, size); + k1 = k1.clone(); + k2 = k2.clone(); + var d1 = 0; + var d2 = 0; + while (k1.cmpn(-d1) > 0 || k2.cmpn(-d2) > 0) { - JSUtil.defineImmutable(this, { - xpubkey: xpubkey, - network: network, - depth: BufferUtil.integerFromSingleByteBuffer(arg.depth), - publicKey: publicKey, - fingerPrint: fingerPrint - }); + // First phase + var m14 = (k1.andln(3) + d1) & 3; + var m24 = (k2.andln(3) + d2) & 3; + if (m14 === 3) + m14 = -1; + if (m24 === 3) + m24 = -1; + var u1; + if ((m14 & 1) === 0) { + u1 = 0; + } else { + var m8 = (k1.andln(7) + d1) & 7; + if ((m8 === 3 || m8 === 5) && m24 === 2) + u1 = -m14; + else + u1 = m14; + } + jsf[0].push(u1); - return this; -}; + var u2; + if ((m24 & 1) === 0) { + u2 = 0; + } else { + var m8 = (k2.andln(7) + d2) & 7; + if ((m8 === 3 || m8 === 5) && m14 === 2) + u2 = -m24; + else + u2 = m24; + } + jsf[1].push(u2); -HDPublicKey._validateBufferArguments = function(arg) { - var checkBuffer = function(name, size) { - var buff = arg[name]; - assert(BufferUtil.isBuffer(buff), name + ' argument is not a buffer, it\'s ' + typeof buff); - assert( - buff.length === size, - name + ' has not the expected size: found ' + buff.length + ', expected ' + size - ); - }; - checkBuffer('version', HDPublicKey.VersionSize); - checkBuffer('depth', HDPublicKey.DepthSize); - checkBuffer('parentFingerPrint', HDPublicKey.ParentFingerPrintSize); - checkBuffer('childIndex', HDPublicKey.ChildIndexSize); - checkBuffer('chainCode', HDPublicKey.ChainCodeSize); - checkBuffer('publicKey', HDPublicKey.PublicKeySize); - if (arg.checksum && arg.checksum.length) { - checkBuffer('checksum', HDPublicKey.CheckSumSize); + // Second phase + if (2 * d1 === u1 + 1) + d1 = 1 - d1; + if (2 * d2 === u2 + 1) + d2 = 1 - d2; + k1.iushrn(1); + k2.iushrn(1); } -}; - -HDPublicKey.fromString = function(arg) { - $.checkArgument(_.isString(arg), 'No valid string was provided'); - return new HDPublicKey(arg); -}; - -HDPublicKey.fromObject = function(arg) { - $.checkArgument(_.isObject(arg), 'No valid argument was provided'); - return new HDPublicKey(arg); -}; - -/** - * Returns the base58 checked representation of the public key - * @return {string} a string starting with "xpub..." in livenet - */ -HDPublicKey.prototype.toString = function() { - return this.xpubkey; -}; -/** - * Returns the console representation of this extended public key. - * @return string - */ -HDPublicKey.prototype.inspect = function() { - return ''; -}; + return jsf; +} +utils.getJSF = getJSF; -/** - * Returns a plain JavaScript object with information to reconstruct a key. - * - * Fields are:
    - *
  • network: 'livenet' or 'testnet' - *
  • depth: a number from 0 to 255, the depth to the master extended key - *
  • fingerPrint: a number of 32 bits taken from the hash of the public key - *
  • fingerPrint: a number of 32 bits taken from the hash of this key's - *
  • parent's public key - *
  • childIndex: index with which this key was derived - *
  • chainCode: string in hexa encoding used for derivation - *
  • publicKey: string, hexa encoded, in compressed key format - *
  • checksum: BufferUtil.integerFromBuffer(this._buffers.checksum), - *
  • xpubkey: the string with the base58 representation of this extended key - *
  • checksum: the base58 checksum of xpubkey - *
- */ -HDPublicKey.prototype.toObject = HDPublicKey.prototype.toJSON = function toObject() { - return { - network: Network.get(BufferUtil.integerFromBuffer(this._buffers.version)).name, - depth: BufferUtil.integerFromSingleByteBuffer(this._buffers.depth), - fingerPrint: BufferUtil.integerFromBuffer(this.fingerPrint), - parentFingerPrint: BufferUtil.integerFromBuffer(this._buffers.parentFingerPrint), - childIndex: BufferUtil.integerFromBuffer(this._buffers.childIndex), - chainCode: BufferUtil.bufferToHex(this._buffers.chainCode), - publicKey: this.publicKey.toString(), - checksum: BufferUtil.integerFromBuffer(this._buffers.checksum), - xpubkey: this.xpubkey +function cachedProperty(obj, name, computer) { + var key = '_' + name; + obj.prototype[name] = function cachedProperty() { + return this[key] !== undefined ? this[key] : + this[key] = computer.call(this); }; -}; - -/** - * Create a HDPublicKey from a buffer argument - * - * @param {Buffer} arg - * @return {HDPublicKey} - */ -HDPublicKey.fromBuffer = function(arg) { - return new HDPublicKey(arg); -}; - -/** - * Return a buffer representation of the xpubkey - * - * @return {Buffer} - */ -HDPublicKey.prototype.toBuffer = function() { - return BufferUtil.copy(this._buffers.xpubkey); -}; - -HDPublicKey.Hardened = 0x80000000; -HDPublicKey.RootElementAlias = ['m', 'M']; - -HDPublicKey.VersionSize = 4; -HDPublicKey.DepthSize = 1; -HDPublicKey.ParentFingerPrintSize = 4; -HDPublicKey.ChildIndexSize = 4; -HDPublicKey.ChainCodeSize = 32; -HDPublicKey.PublicKeySize = 33; -HDPublicKey.CheckSumSize = 4; - -HDPublicKey.DataSize = 78; -HDPublicKey.SerializedByteSize = 82; - -HDPublicKey.VersionStart = 0; -HDPublicKey.VersionEnd = HDPublicKey.VersionStart + HDPublicKey.VersionSize; -HDPublicKey.DepthStart = HDPublicKey.VersionEnd; -HDPublicKey.DepthEnd = HDPublicKey.DepthStart + HDPublicKey.DepthSize; -HDPublicKey.ParentFingerPrintStart = HDPublicKey.DepthEnd; -HDPublicKey.ParentFingerPrintEnd = HDPublicKey.ParentFingerPrintStart + HDPublicKey.ParentFingerPrintSize; -HDPublicKey.ChildIndexStart = HDPublicKey.ParentFingerPrintEnd; -HDPublicKey.ChildIndexEnd = HDPublicKey.ChildIndexStart + HDPublicKey.ChildIndexSize; -HDPublicKey.ChainCodeStart = HDPublicKey.ChildIndexEnd; -HDPublicKey.ChainCodeEnd = HDPublicKey.ChainCodeStart + HDPublicKey.ChainCodeSize; -HDPublicKey.PublicKeyStart = HDPublicKey.ChainCodeEnd; -HDPublicKey.PublicKeyEnd = HDPublicKey.PublicKeyStart + HDPublicKey.PublicKeySize; -HDPublicKey.ChecksumStart = HDPublicKey.PublicKeyEnd; -HDPublicKey.ChecksumEnd = HDPublicKey.ChecksumStart + HDPublicKey.CheckSumSize; +} +utils.cachedProperty = cachedProperty; -assert(HDPublicKey.PublicKeyEnd === HDPublicKey.DataSize); -assert(HDPublicKey.ChecksumEnd === HDPublicKey.SerializedByteSize); +function parseBytes(bytes) { + return typeof bytes === 'string' ? utils.toArray(bytes, 'hex') : + bytes; +} +utils.parseBytes = parseBytes; -module.exports = HDPublicKey; +function intFromLE(bytes) { + return new BN(bytes, 'hex', 'le'); +} +utils.intFromLE = intFromLE; -}).call(this,require("buffer").Buffer) -},{"./crypto/bn":169,"./crypto/hash":171,"./crypto/point":172,"./encoding/base58":175,"./encoding/base58check":176,"./errors":180,"./hdprivatekey":182,"./networks":184,"./publickey":187,"./util/buffer":206,"./util/js":207,"./util/preconditions":208,"assert":15,"buffer":52,"lodash":245}],184:[function(require,module,exports){ -'use strict'; -var _ = require('lodash'); -var BufferUtil = require('./util/buffer'); -var JSUtil = require('./util/js'); -var networks = []; -var networkMaps = {}; +},{"bn.js":66,"minimalistic-assert":159,"minimalistic-crypto-utils":160}],134:[function(require,module,exports){ +module.exports={ + "_args": [ + [ + "elliptic@6.4.0", + "/Users/patwhite/Source/BitAlpha/bitcore/packages/bitcore-lib" + ] + ], + "_from": "elliptic@6.4.0", + "_id": "elliptic@6.4.0", + "_inBundle": false, + "_integrity": "sha1-ysmvh2LIWDYYcAPI3+GT5eLq5d8=", + "_location": "/elliptic", + "_phantomChildren": {}, + "_requested": { + "type": "version", + "registry": true, + "raw": "elliptic@6.4.0", + "name": "elliptic", + "escapedName": "elliptic", + "rawSpec": "6.4.0", + "saveSpec": null, + "fetchSpec": "6.4.0" + }, + "_requiredBy": [ + "/", + "/browserify-sign", + "/create-ecdh" + ], + "_resolved": "https://registry.npmjs.org/elliptic/-/elliptic-6.4.0.tgz", + "_spec": "6.4.0", + "_where": "/Users/patwhite/Source/BitAlpha/bitcore/packages/bitcore-lib", + "author": { + "name": "Fedor Indutny", + "email": "fedor@indutny.com" + }, + "bugs": { + "url": "https://github.com/indutny/elliptic/issues" + }, + "dependencies": { + "bn.js": "^4.4.0", + "brorand": "^1.0.1", + "hash.js": "^1.0.0", + "hmac-drbg": "^1.0.0", + "inherits": "^2.0.1", + "minimalistic-assert": "^1.0.0", + "minimalistic-crypto-utils": "^1.0.0" + }, + "description": "EC cryptography", + "devDependencies": { + "brfs": "^1.4.3", + "coveralls": "^2.11.3", + "grunt": "^0.4.5", + "grunt-browserify": "^5.0.0", + "grunt-cli": "^1.2.0", + "grunt-contrib-connect": "^1.0.0", + "grunt-contrib-copy": "^1.0.0", + "grunt-contrib-uglify": "^1.0.1", + "grunt-mocha-istanbul": "^3.0.1", + "grunt-saucelabs": "^8.6.2", + "istanbul": "^0.4.2", + "jscs": "^2.9.0", + "jshint": "^2.6.0", + "mocha": "^2.1.0" + }, + "files": [ + "lib" + ], + "homepage": "https://github.com/indutny/elliptic", + "keywords": [ + "EC", + "Elliptic", + "curve", + "Cryptography" + ], + "license": "MIT", + "main": "lib/elliptic.js", + "name": "elliptic", + "repository": { + "type": "git", + "url": "git+ssh://git@github.com/indutny/elliptic.git" + }, + "scripts": { + "jscs": "jscs benchmarks/*.js lib/*.js lib/**/*.js lib/**/**/*.js test/index.js", + "jshint": "jscs benchmarks/*.js lib/*.js lib/**/*.js lib/**/**/*.js test/index.js", + "lint": "npm run jscs && npm run jshint", + "test": "npm run lint && npm run unit", + "unit": "istanbul test _mocha --reporter=spec test/index.js", + "version": "grunt dist && git add dist/" + }, + "version": "6.4.0" +} -/** - * A network is merely a map containing values that correspond to version - * numbers for each bitcoin network. Currently only supporting "livenet" - * (a.k.a. "mainnet") and "testnet". - * @constructor - */ -function Network() {} +},{}],135:[function(require,module,exports){ +// Copyright Joyent, Inc. and other Node contributors. +// +// Permission is hereby granted, free of charge, to any person obtaining a +// copy of this software and associated documentation files (the +// "Software"), to deal in the Software without restriction, including +// without limitation the rights to use, copy, modify, merge, publish, +// distribute, sublicense, and/or sell copies of the Software, and to permit +// persons to whom the Software is furnished to do so, subject to the +// following conditions: +// +// The above copyright notice and this permission notice shall be included +// in all copies or substantial portions of the Software. +// +// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS +// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF +// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN +// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, +// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR +// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE +// USE OR OTHER DEALINGS IN THE SOFTWARE. -Network.prototype.toString = function toString() { - return this.name; -}; +var objectCreate = Object.create || objectCreatePolyfill +var objectKeys = Object.keys || objectKeysPolyfill +var bind = Function.prototype.bind || functionBindPolyfill -/** - * @function - * @member Networks#get - * Retrieves the network associated with a magic number or string. - * @param {string|number|Network} arg - * @param {string|Array} keys - if set, only check if the magic number associated with this name matches - * @return Network - */ -function get(arg, keys) { - if (~networks.indexOf(arg)) { - return arg; - } - if (keys) { - if (!_.isArray(keys)) { - keys = [keys]; - } - var containsArg = function(key) { - return networks[index][key] === arg; - }; - for (var index in networks) { - if (_.some(keys, containsArg)) { - return networks[index]; - } - } - return undefined; - } - if(networkMaps[arg] && networkMaps[arg].length >= 1) { - return networkMaps[arg][0]; - } else { - return networkMaps[arg]; +function EventEmitter() { + if (!this._events || !Object.prototype.hasOwnProperty.call(this, '_events')) { + this._events = objectCreate(null); + this._eventsCount = 0; } -} - -/** - * @function - * @member Networks#add - * Will add a custom Network - * @param {Object} data - * @param {string} data.name - The name of the network - * @param {string} data.alias - The aliased name of the network - * @param {Number} data.pubkeyhash - The publickey hash prefix - * @param {Number} data.privatekey - The privatekey prefix - * @param {Number} data.scripthash - The scripthash prefix - * @param {Number} data.xpubkey - The extended public key magic - * @param {Number} data.xprivkey - The extended private key magic - * @param {Number} data.networkMagic - The network magic number - * @param {Number} data.port - The network port - * @param {Array} data.dnsSeeds - An array of dns seeds - * @return Network - */ -function addNetwork(data) { - var network = new Network(); + this._maxListeners = this._maxListeners || undefined; +} +module.exports = EventEmitter; - JSUtil.defineImmutable(network, { - name: data.name, - alias: data.alias, - pubkeyhash: data.pubkeyhash, - privatekey: data.privatekey, - scripthash: data.scripthash, - xpubkey: data.xpubkey, - xprivkey: data.xprivkey - }); +// Backwards-compat with node 0.10.x +EventEmitter.EventEmitter = EventEmitter; - if (data.networkMagic) { - JSUtil.defineImmutable(network, { - networkMagic: BufferUtil.integerAsBuffer(data.networkMagic) - }); - } +EventEmitter.prototype._events = undefined; +EventEmitter.prototype._maxListeners = undefined; - if (data.port) { - JSUtil.defineImmutable(network, { - port: data.port - }); - } +// By default EventEmitters will print a warning if more than 10 listeners are +// added to it. This is a useful default which helps finding memory leaks. +var defaultMaxListeners = 10; - if (data.dnsSeeds) { - JSUtil.defineImmutable(network, { - dnsSeeds: data.dnsSeeds - }); - } - _.each(network, function(value) { - if (!_.isUndefined(value) && !_.isObject(value)) { - if(!networkMaps[value]) { - networkMaps[value] = []; - } - networkMaps[value].push(network); +var hasDefineProperty; +try { + var o = {}; + if (Object.defineProperty) Object.defineProperty(o, 'x', { value: 0 }); + hasDefineProperty = o.x === 0; +} catch (err) { hasDefineProperty = false } +if (hasDefineProperty) { + Object.defineProperty(EventEmitter, 'defaultMaxListeners', { + enumerable: true, + get: function() { + return defaultMaxListeners; + }, + set: function(arg) { + // check whether the input is a positive number (whose value is zero or + // greater and not a NaN). + if (typeof arg !== 'number' || arg < 0 || arg !== arg) + throw new TypeError('"defaultMaxListeners" must be a positive number'); + defaultMaxListeners = arg; } }); +} else { + EventEmitter.defaultMaxListeners = defaultMaxListeners; +} - networks.push(network); - - return network; +// Obviously not all Emitters should be limited to 10. This function allows +// that to be increased. Set to zero for unlimited. +EventEmitter.prototype.setMaxListeners = function setMaxListeners(n) { + if (typeof n !== 'number' || n < 0 || isNaN(n)) + throw new TypeError('"n" argument must be a positive number'); + this._maxListeners = n; + return this; +}; +function $getMaxListeners(that) { + if (that._maxListeners === undefined) + return EventEmitter.defaultMaxListeners; + return that._maxListeners; } -/** - * @function - * @member Networks#remove - * Will remove a custom network - * @param {Network} network - */ -function removeNetwork(network) { - for (var i = 0; i < networks.length; i++) { - if (networks[i] === network) { - networks.splice(i, 1); - } +EventEmitter.prototype.getMaxListeners = function getMaxListeners() { + return $getMaxListeners(this); +}; + +// These standalone emit* functions are used to optimize calling of event +// handlers for fast cases because emit() itself often has a variable number of +// arguments and can be deoptimized because of that. These functions always have +// the same number of arguments and thus do not get deoptimized, so the code +// inside them can execute faster. +function emitNone(handler, isFn, self) { + if (isFn) + handler.call(self); + else { + var len = handler.length; + var listeners = arrayClone(handler, len); + for (var i = 0; i < len; ++i) + listeners[i].call(self); } - for (var key in networkMaps) { - const index = networkMaps[key].indexOf(network); - if (index >= 0) { - delete networkMaps[key][index]; - } +} +function emitOne(handler, isFn, self, arg1) { + if (isFn) + handler.call(self, arg1); + else { + var len = handler.length; + var listeners = arrayClone(handler, len); + for (var i = 0; i < len; ++i) + listeners[i].call(self, arg1); } } - -addNetwork({ - name: 'livenet', - alias: 'mainnet', - pubkeyhash: 0x00, - privatekey: 0x80, - scripthash: 0x05, - xpubkey: 0x0488b21e, - xprivkey: 0x0488ade4, - networkMagic: 0xf9beb4d9, - port: 8333, - dnsSeeds: [ - 'seed.bitcoin.sipa.be', - 'dnsseed.bluematt.me', - 'dnsseed.bitcoin.dashjr.org', - 'seed.bitcoinstats.com', - 'seed.bitnodes.io', - 'bitseed.xf2.org' - ] -}); - -/** - * @instance - * @member Networks#livenet - */ -var livenet = get('livenet'); - -addNetwork({ - name: 'testnet', - alias: 'test', - pubkeyhash: 0x6f, - privatekey: 0xef, - scripthash: 0xc4, - xpubkey: 0x043587cf, - xprivkey: 0x04358394, - networkMagic: 0x0b110907, - port: 18333, - dnsSeeds: [ - 'testnet-seed.bitcoin.petertodd.org', - 'testnet-seed.bluematt.me', - 'testnet-seed.alexykot.me', - 'testnet-seed.bitcoin.schildbach.de' - ] -}); - -/** - * @instance - * @member Networks#testnet - */ -var testnet = get('testnet'); - -addNetwork({ - name: 'regtest', - alias: 'dev', - pubkeyhash: 0x6f, - privatekey: 0xef, - scripthash: 0xc4, - xpubkey: 0x043587cf, - xprivkey: 0x04358394, - networkMagic: 0xfabfb5da, - port: 18444, - dnsSeeds: [] -}); - -/** - * @instance - * @member Networks#testnet - */ -var regtest = get('regtest'); - -/** - * @function - * @deprecated - * @member Networks#enableRegtest - * Will enable regtest features for testnet - */ -function enableRegtest() { - testnet.regtestEnabled = true; +function emitTwo(handler, isFn, self, arg1, arg2) { + if (isFn) + handler.call(self, arg1, arg2); + else { + var len = handler.length; + var listeners = arrayClone(handler, len); + for (var i = 0; i < len; ++i) + listeners[i].call(self, arg1, arg2); + } } - -/** - * @function - * @deprecated - * @member Networks#disableRegtest - * Will disable regtest features for testnet - */ -function disableRegtest() { - testnet.regtestEnabled = false; +function emitThree(handler, isFn, self, arg1, arg2, arg3) { + if (isFn) + handler.call(self, arg1, arg2, arg3); + else { + var len = handler.length; + var listeners = arrayClone(handler, len); + for (var i = 0; i < len; ++i) + listeners[i].call(self, arg1, arg2, arg3); + } } -/** - * @namespace Networks - */ -module.exports = { - add: addNetwork, - remove: removeNetwork, - defaultNetwork: livenet, - livenet: livenet, - mainnet: livenet, - testnet: testnet, - regtest: regtest, - get: get, - enableRegtest: enableRegtest, - disableRegtest: disableRegtest -}; +function emitMany(handler, isFn, self, args) { + if (isFn) + handler.apply(self, args); + else { + var len = handler.length; + var listeners = arrayClone(handler, len); + for (var i = 0; i < len; ++i) + listeners[i].apply(self, args); + } +} -},{"./util/buffer":206,"./util/js":207,"lodash":245}],185:[function(require,module,exports){ -(function (Buffer){ -'use strict'; +EventEmitter.prototype.emit = function emit(type) { + var er, handler, len, args, i, events; + var doError = (type === 'error'); -var _ = require('lodash'); -var $ = require('./util/preconditions'); -var BufferUtil = require('./util/buffer'); -var JSUtil = require('./util/js'); + events = this._events; + if (events) + doError = (doError && events.error == null); + else if (!doError) + return false; -function Opcode(num) { - if (!(this instanceof Opcode)) { - return new Opcode(num); + // If there is no 'error' event listener then throw. + if (doError) { + if (arguments.length > 1) + er = arguments[1]; + if (er instanceof Error) { + throw er; // Unhandled 'error' event + } else { + // At least give some kind of context to the user + var err = new Error('Unhandled "error" event. (' + er + ')'); + err.context = er; + throw err; + } + return false; } - var value; + handler = events[type]; - if (_.isNumber(num)) { - value = num; - } else if (_.isString(num)) { - value = Opcode.map[num]; - } else { - throw new TypeError('Unrecognized num type: "' + typeof(num) + '" for Opcode'); + if (!handler) + return false; + + var isFn = typeof handler === 'function'; + len = arguments.length; + switch (len) { + // fast cases + case 1: + emitNone(handler, isFn, this); + break; + case 2: + emitOne(handler, isFn, this, arguments[1]); + break; + case 3: + emitTwo(handler, isFn, this, arguments[1], arguments[2]); + break; + case 4: + emitThree(handler, isFn, this, arguments[1], arguments[2], arguments[3]); + break; + // slower + default: + args = new Array(len - 1); + for (i = 1; i < len; i++) + args[i - 1] = arguments[i]; + emitMany(handler, isFn, this, args); } - JSUtil.defineImmutable(this, { - num: value - }); + return true; +}; - return this; -} +function _addListener(target, type, listener, prepend) { + var m; + var events; + var existing; -Opcode.fromBuffer = function(buf) { - $.checkArgument(BufferUtil.isBuffer(buf)); - return new Opcode(Number('0x' + buf.toString('hex'))); -}; + if (typeof listener !== 'function') + throw new TypeError('"listener" argument must be a function'); -Opcode.fromNumber = function(num) { - $.checkArgument(_.isNumber(num)); - return new Opcode(num); -}; + events = target._events; + if (!events) { + events = target._events = objectCreate(null); + target._eventsCount = 0; + } else { + // To avoid recursion in the case that type === "newListener"! Before + // adding it to the listeners, first emit "newListener". + if (events.newListener) { + target.emit('newListener', type, + listener.listener ? listener.listener : listener); -Opcode.fromString = function(str) { - $.checkArgument(_.isString(str)); - var value = Opcode.map[str]; - if (typeof value === 'undefined') { - throw new TypeError('Invalid opcodestr'); + // Re-assign `events` because a newListener handler could have caused the + // this._events to be assigned to a new object + events = target._events; + } + existing = events[type]; } - return new Opcode(value); -}; -Opcode.prototype.toHex = function() { - return this.num.toString(16); -}; + if (!existing) { + // Optimize the case of one listener. Don't need the extra array object. + existing = events[type] = listener; + ++target._eventsCount; + } else { + if (typeof existing === 'function') { + // Adding the second element, need to change to array. + existing = events[type] = + prepend ? [listener, existing] : [existing, listener]; + } else { + // If we've already got an array, just append. + if (prepend) { + existing.unshift(listener); + } else { + existing.push(listener); + } + } -Opcode.prototype.toBuffer = function() { - return Buffer.from(this.toHex(), 'hex'); -}; + // Check for listener leak + if (!existing.warned) { + m = $getMaxListeners(target); + if (m && m > 0 && existing.length > m) { + existing.warned = true; + var w = new Error('Possible EventEmitter memory leak detected. ' + + existing.length + ' "' + String(type) + '" listeners ' + + 'added. Use emitter.setMaxListeners() to ' + + 'increase limit.'); + w.name = 'MaxListenersExceededWarning'; + w.emitter = target; + w.type = type; + w.count = existing.length; + if (typeof console === 'object' && console.warn) { + console.warn('%s: %s', w.name, w.message); + } + } + } + } -Opcode.prototype.toNumber = function() { - return this.num; -}; + return target; +} -Opcode.prototype.toString = function() { - var str = Opcode.reverseMap[this.num]; - if (typeof str === 'undefined') { - throw new Error('Opcode does not have a string representation'); - } - return str; +EventEmitter.prototype.addListener = function addListener(type, listener) { + return _addListener(this, type, listener, false); }; -Opcode.smallInt = function(n) { - $.checkArgument(_.isNumber(n), 'Invalid Argument: n should be number'); - $.checkArgument(n >= 0 && n <= 16, 'Invalid Argument: n must be between 0 and 16'); - if (n === 0) { - return Opcode('OP_0'); - } - return new Opcode(Opcode.map.OP_1 + n - 1); -}; +EventEmitter.prototype.on = EventEmitter.prototype.addListener; -Opcode.map = { - // push value - OP_FALSE: 0, - OP_0: 0, - OP_PUSHDATA1: 76, - OP_PUSHDATA2: 77, - OP_PUSHDATA4: 78, - OP_1NEGATE: 79, - OP_RESERVED: 80, - OP_TRUE: 81, - OP_1: 81, - OP_2: 82, - OP_3: 83, - OP_4: 84, - OP_5: 85, - OP_6: 86, - OP_7: 87, - OP_8: 88, - OP_9: 89, - OP_10: 90, - OP_11: 91, - OP_12: 92, - OP_13: 93, - OP_14: 94, - OP_15: 95, - OP_16: 96, +EventEmitter.prototype.prependListener = + function prependListener(type, listener) { + return _addListener(this, type, listener, true); + }; - // control - OP_NOP: 97, - OP_VER: 98, - OP_IF: 99, - OP_NOTIF: 100, - OP_VERIF: 101, - OP_VERNOTIF: 102, - OP_ELSE: 103, - OP_ENDIF: 104, - OP_VERIFY: 105, - OP_RETURN: 106, +function onceWrapper() { + if (!this.fired) { + this.target.removeListener(this.type, this.wrapFn); + this.fired = true; + switch (arguments.length) { + case 0: + return this.listener.call(this.target); + case 1: + return this.listener.call(this.target, arguments[0]); + case 2: + return this.listener.call(this.target, arguments[0], arguments[1]); + case 3: + return this.listener.call(this.target, arguments[0], arguments[1], + arguments[2]); + default: + var args = new Array(arguments.length); + for (var i = 0; i < args.length; ++i) + args[i] = arguments[i]; + this.listener.apply(this.target, args); + } + } +} - // stack ops - OP_TOALTSTACK: 107, - OP_FROMALTSTACK: 108, - OP_2DROP: 109, - OP_2DUP: 110, - OP_3DUP: 111, - OP_2OVER: 112, - OP_2ROT: 113, - OP_2SWAP: 114, - OP_IFDUP: 115, - OP_DEPTH: 116, - OP_DROP: 117, - OP_DUP: 118, - OP_NIP: 119, - OP_OVER: 120, - OP_PICK: 121, - OP_ROLL: 122, - OP_ROT: 123, - OP_SWAP: 124, - OP_TUCK: 125, +function _onceWrap(target, type, listener) { + var state = { fired: false, wrapFn: undefined, target: target, type: type, listener: listener }; + var wrapped = bind.call(onceWrapper, state); + wrapped.listener = listener; + state.wrapFn = wrapped; + return wrapped; +} - // splice ops - OP_CAT: 126, - OP_SUBSTR: 127, - OP_LEFT: 128, - OP_RIGHT: 129, - OP_SIZE: 130, +EventEmitter.prototype.once = function once(type, listener) { + if (typeof listener !== 'function') + throw new TypeError('"listener" argument must be a function'); + this.on(type, _onceWrap(this, type, listener)); + return this; +}; - // bit logic - OP_INVERT: 131, - OP_AND: 132, - OP_OR: 133, - OP_XOR: 134, - OP_EQUAL: 135, - OP_EQUALVERIFY: 136, - OP_RESERVED1: 137, - OP_RESERVED2: 138, +EventEmitter.prototype.prependOnceListener = + function prependOnceListener(type, listener) { + if (typeof listener !== 'function') + throw new TypeError('"listener" argument must be a function'); + this.prependListener(type, _onceWrap(this, type, listener)); + return this; + }; - // numeric - OP_1ADD: 139, - OP_1SUB: 140, - OP_2MUL: 141, - OP_2DIV: 142, - OP_NEGATE: 143, - OP_ABS: 144, - OP_NOT: 145, - OP_0NOTEQUAL: 146, +// Emits a 'removeListener' event if and only if the listener was removed. +EventEmitter.prototype.removeListener = + function removeListener(type, listener) { + var list, events, position, i, originalListener; - OP_ADD: 147, - OP_SUB: 148, - OP_MUL: 149, - OP_DIV: 150, - OP_MOD: 151, - OP_LSHIFT: 152, - OP_RSHIFT: 153, + if (typeof listener !== 'function') + throw new TypeError('"listener" argument must be a function'); - OP_BOOLAND: 154, - OP_BOOLOR: 155, - OP_NUMEQUAL: 156, - OP_NUMEQUALVERIFY: 157, - OP_NUMNOTEQUAL: 158, - OP_LESSTHAN: 159, - OP_GREATERTHAN: 160, - OP_LESSTHANOREQUAL: 161, - OP_GREATERTHANOREQUAL: 162, - OP_MIN: 163, - OP_MAX: 164, + events = this._events; + if (!events) + return this; - OP_WITHIN: 165, + list = events[type]; + if (!list) + return this; - // crypto - OP_RIPEMD160: 166, - OP_SHA1: 167, - OP_SHA256: 168, - OP_HASH160: 169, - OP_HASH256: 170, - OP_CODESEPARATOR: 171, - OP_CHECKSIG: 172, - OP_CHECKSIGVERIFY: 173, - OP_CHECKMULTISIG: 174, - OP_CHECKMULTISIGVERIFY: 175, + if (list === listener || list.listener === listener) { + if (--this._eventsCount === 0) + this._events = objectCreate(null); + else { + delete events[type]; + if (events.removeListener) + this.emit('removeListener', type, list.listener || listener); + } + } else if (typeof list !== 'function') { + position = -1; - OP_CHECKLOCKTIMEVERIFY: 177, - OP_CHECKSEQUENCEVERIFY: 178, + for (i = list.length - 1; i >= 0; i--) { + if (list[i] === listener || list[i].listener === listener) { + originalListener = list[i].listener; + position = i; + break; + } + } - // expansion - OP_NOP1: 176, - OP_NOP2: 177, - OP_NOP3: 178, - OP_NOP4: 179, - OP_NOP5: 180, - OP_NOP6: 181, - OP_NOP7: 182, - OP_NOP8: 183, - OP_NOP9: 184, - OP_NOP10: 185, + if (position < 0) + return this; - // template matching params - OP_PUBKEYHASH: 253, - OP_PUBKEY: 254, - OP_INVALIDOPCODE: 255 -}; + if (position === 0) + list.shift(); + else + spliceOne(list, position); -Opcode.reverseMap = []; + if (list.length === 1) + events[type] = list[0]; -for (var k in Opcode.map) { - Opcode.reverseMap[Opcode.map[k]] = k; -} + if (events.removeListener) + this.emit('removeListener', type, originalListener || listener); + } -// Easier access to opcodes -_.extend(Opcode, Opcode.map); + return this; + }; -/** - * @returns true if opcode is one of OP_0, OP_1, ..., OP_16 - */ -Opcode.isSmallIntOp = function(opcode) { - if (opcode instanceof Opcode) { - opcode = opcode.toNumber(); - } - return ((opcode === Opcode.map.OP_0) || - ((opcode >= Opcode.map.OP_1) && (opcode <= Opcode.map.OP_16))); -}; +EventEmitter.prototype.removeAllListeners = + function removeAllListeners(type) { + var listeners, events, i; -/** - * Will return a string formatted for the console - * - * @returns {string} Script opcode - */ -Opcode.prototype.inspect = function() { - return ''; -}; + events = this._events; + if (!events) + return this; -module.exports = Opcode; + // not listening for removeListener, no need to emit + if (!events.removeListener) { + if (arguments.length === 0) { + this._events = objectCreate(null); + this._eventsCount = 0; + } else if (events[type]) { + if (--this._eventsCount === 0) + this._events = objectCreate(null); + else + delete events[type]; + } + return this; + } -}).call(this,require("buffer").Buffer) -},{"./util/buffer":206,"./util/js":207,"./util/preconditions":208,"buffer":52,"lodash":245}],186:[function(require,module,exports){ -(function (Buffer){ -'use strict'; + // emit removeListener for all listeners on all events + if (arguments.length === 0) { + var keys = objectKeys(events); + var key; + for (i = 0; i < keys.length; ++i) { + key = keys[i]; + if (key === 'removeListener') continue; + this.removeAllListeners(key); + } + this.removeAllListeners('removeListener'); + this._events = objectCreate(null); + this._eventsCount = 0; + return this; + } -var _ = require('lodash'); -var Address = require('./address'); -var Base58Check = require('./encoding/base58check'); -var BN = require('./crypto/bn'); -var JSUtil = require('./util/js'); -var Networks = require('./networks'); -var Point = require('./crypto/point'); -var PublicKey = require('./publickey'); -var Random = require('./crypto/random'); -var $ = require('./util/preconditions'); + listeners = events[type]; -/** - * Instantiate a PrivateKey from a BN, Buffer and WIF. - * - * @example - * ```javascript - * // generate a new random key - * var key = PrivateKey(); - * - * // get the associated address - * var address = key.toAddress(); - * - * // encode into wallet export format - * var exported = key.toWIF(); - * - * // instantiate from the exported (and saved) private key - * var imported = PrivateKey.fromWIF(exported); - * ``` - * - * @param {string} data - The encoded data in various formats - * @param {Network|string=} network - a {@link Network} object, or a string with the network name - * @returns {PrivateKey} A new valid instance of an PrivateKey - * @constructor - */ -function PrivateKey(data, network) { - /* jshint maxstatements: 20 */ - /* jshint maxcomplexity: 8 */ + if (typeof listeners === 'function') { + this.removeListener(type, listeners); + } else if (listeners) { + // LIFO order + for (i = listeners.length - 1; i >= 0; i--) { + this.removeListener(type, listeners[i]); + } + } - if (!(this instanceof PrivateKey)) { - return new PrivateKey(data, network); - } - if (data instanceof PrivateKey) { - return data; - } + return this; + }; - var info = this._classifyArguments(data, network); +function _listeners(target, type, unwrap) { + var events = target._events; - // validation - if (!info.bn || info.bn.cmp(new BN(0)) === 0){ - throw new TypeError('Number can not be equal to zero, undefined, null or false'); - } - if (!info.bn.lt(Point.getN())) { - throw new TypeError('Number must be less than N'); - } - if (typeof(info.network) === 'undefined') { - throw new TypeError('Must specify the network ("livenet" or "testnet")'); - } + if (!events) + return []; - JSUtil.defineImmutable(this, { - bn: info.bn, - compressed: info.compressed, - network: info.network - }); + var evlistener = events[type]; + if (!evlistener) + return []; - Object.defineProperty(this, 'publicKey', { - configurable: false, - enumerable: true, - get: this.toPublicKey.bind(this) - }); + if (typeof evlistener === 'function') + return unwrap ? [evlistener.listener || evlistener] : [evlistener]; - return this; + return unwrap ? unwrapListeners(evlistener) : arrayClone(evlistener, evlistener.length); +} +EventEmitter.prototype.listeners = function listeners(type) { + return _listeners(this, type, true); }; -/** - * Internal helper to instantiate PrivateKey internal `info` object from - * different kinds of arguments passed to the constructor. - * - * @param {*} data - * @param {Network|string=} network - a {@link Network} object, or a string with the network name - * @return {Object} - */ -PrivateKey.prototype._classifyArguments = function(data, network) { - /* jshint maxcomplexity: 10 */ - var info = { - compressed: true, - network: network ? Networks.get(network) : Networks.defaultNetwork - }; +EventEmitter.prototype.rawListeners = function rawListeners(type) { + return _listeners(this, type, false); +}; - // detect type of data - if (_.isUndefined(data) || _.isNull(data)){ - info.bn = PrivateKey._getRandomBN(); - } else if (data instanceof BN) { - info.bn = data; - } else if (data instanceof Buffer || data instanceof Uint8Array) { - info = PrivateKey._transformBuffer(data, network); - } else if (data.bn && data.network){ - info = PrivateKey._transformObject(data); - } else if (!network && Networks.get(data)) { - info.bn = PrivateKey._getRandomBN(); - info.network = Networks.get(data); - } else if (typeof(data) === 'string'){ - if (JSUtil.isHexa(data)) { - info.bn = new BN(Buffer.from(data, 'hex')); - } else { - info = PrivateKey._transformWIF(data, network); - } +EventEmitter.listenerCount = function(emitter, type) { + if (typeof emitter.listenerCount === 'function') { + return emitter.listenerCount(type); } else { - throw new TypeError('First argument is an unrecognized data type.'); + return listenerCount.call(emitter, type); } - return info; -}; - -/** - * Internal function to get a random Big Number (BN) - * - * @returns {BN} A new randomly generated BN - * @private - */ -PrivateKey._getRandomBN = function(){ - var condition; - var bn; - do { - var privbuf = Random.getRandomBuffer(32); - bn = BN.fromBuffer(privbuf); - condition = bn.lt(Point.getN()); - } while (!condition); - return bn; }; -/** - * Internal function to transform a WIF Buffer into a private key - * - * @param {Buffer} buf - An WIF string - * @param {Network|string=} network - a {@link Network} object, or a string with the network name - * @returns {Object} An object with keys: bn, network and compressed - * @private - */ -PrivateKey._transformBuffer = function(buf, network) { +EventEmitter.prototype.listenerCount = listenerCount; +function listenerCount(type) { + var events = this._events; - var info = {}; + if (events) { + var evlistener = events[type]; - if (buf.length === 32) { - return PrivateKey._transformBNBuffer(buf, network); + if (typeof evlistener === 'function') { + return 1; + } else if (evlistener) { + return evlistener.length; + } } - info.network = Networks.get(buf[0], 'privatekey'); + return 0; +} - if (!info.network) { - throw new Error('Invalid network'); +EventEmitter.prototype.eventNames = function eventNames() { + return this._eventsCount > 0 ? Reflect.ownKeys(this._events) : []; +}; + +// About 1.5x faster than the two-arg version of Array#splice(). +function spliceOne(list, index) { + for (var i = index, k = i + 1, n = list.length; k < n; i += 1, k += 1) + list[i] = list[k]; + list.pop(); +} + +function arrayClone(arr, n) { + var copy = new Array(n); + for (var i = 0; i < n; ++i) + copy[i] = arr[i]; + return copy; +} + +function unwrapListeners(arr) { + var ret = new Array(arr.length); + for (var i = 0; i < ret.length; ++i) { + ret[i] = arr[i].listener || arr[i]; } + return ret; +} - if (network && info.network !== Networks.get(network)) { - throw new TypeError('Private key network mismatch'); +function objectCreatePolyfill(proto) { + var F = function() {}; + F.prototype = proto; + return new F; +} +function objectKeysPolyfill(obj) { + var keys = []; + for (var k in obj) if (Object.prototype.hasOwnProperty.call(obj, k)) { + keys.push(k); } + return k; +} +function functionBindPolyfill(context) { + var fn = this; + return function () { + return fn.apply(context, arguments); + }; +} - if (buf.length === 1 + 32 + 1 && buf[1 + 32 + 1 - 1] === 1) { - info.compressed = true; - } else if (buf.length === 1 + 32) { - info.compressed = false; - } else { - throw new Error('Length of buffer must be 33 (uncompressed) or 34 (compressed)'); +},{}],136:[function(require,module,exports){ +var Buffer = require('safe-buffer').Buffer +var MD5 = require('md5.js') + +/* eslint-disable camelcase */ +function EVP_BytesToKey (password, salt, keyBits, ivLen) { + if (!Buffer.isBuffer(password)) password = Buffer.from(password, 'binary') + if (salt) { + if (!Buffer.isBuffer(salt)) salt = Buffer.from(salt, 'binary') + if (salt.length !== 8) throw new RangeError('salt should be Buffer with 8 byte length') } - info.bn = BN.fromBuffer(buf.slice(1, 32 + 1)); + var keyLen = keyBits / 8 + var key = Buffer.alloc(keyLen) + var iv = Buffer.alloc(ivLen || 0) + var tmp = Buffer.alloc(0) - return info; -}; + while (keyLen > 0 || ivLen > 0) { + var hash = new MD5() + hash.update(tmp) + hash.update(password) + if (salt) hash.update(salt) + tmp = hash.digest() -/** - * Internal function to transform a BN buffer into a private key - * - * @param {Buffer} buf - * @param {Network|string=} network - a {@link Network} object, or a string with the network name - * @returns {object} an Object with keys: bn, network, and compressed - * @private - */ -PrivateKey._transformBNBuffer = function(buf, network) { - var info = {}; - info.network = Networks.get(network) || Networks.defaultNetwork; - info.bn = BN.fromBuffer(buf); - info.compressed = false; - return info; -}; + var used = 0 + + if (keyLen > 0) { + var keyStart = key.length - keyLen + used = Math.min(keyLen, tmp.length) + tmp.copy(key, keyStart, 0, used) + keyLen -= used + } -/** - * Internal function to transform a WIF string into a private key - * - * @param {string} buf - An WIF string - * @returns {Object} An object with keys: bn, network and compressed - * @private - */ -PrivateKey._transformWIF = function(str, network) { - return PrivateKey._transformBuffer(Base58Check.decode(str), network); -}; + if (used < tmp.length && ivLen > 0) { + var ivStart = iv.length - ivLen + var length = Math.min(ivLen, tmp.length - used) + tmp.copy(iv, ivStart, used, used + length) + ivLen -= length + } + } -/** - * Instantiate a PrivateKey from a Buffer with the DER or WIF representation - * - * @param {Buffer} arg - * @param {Network} network - * @return {PrivateKey} - */ -PrivateKey.fromBuffer = function(arg, network) { - return new PrivateKey(arg, network); -}; + tmp.fill(0) + return { key: key, iv: iv } +} -/** - * Internal function to transform a JSON string on plain object into a private key - * return this. - * - * @param {string} json - A JSON string or plain object - * @returns {Object} An object with keys: bn, network and compressed - * @private - */ -PrivateKey._transformObject = function(json) { - var bn = new BN(json.bn, 'hex'); - var network = Networks.get(json.network); - return { - bn: bn, - network: network, - compressed: json.compressed - }; -}; +module.exports = EVP_BytesToKey -/** - * Instantiate a PrivateKey from a WIF string - * - * @param {string} str - The WIF encoded private key string - * @returns {PrivateKey} A new valid instance of PrivateKey - */ -PrivateKey.fromString = PrivateKey.fromWIF = function(str) { - $.checkArgument(_.isString(str), 'First argument is expected to be a string.'); - return new PrivateKey(str); -}; +},{"md5.js":157,"safe-buffer":199}],137:[function(require,module,exports){ +'use strict' +var Buffer = require('safe-buffer').Buffer +var Transform = require('stream').Transform +var inherits = require('inherits') -/** - * Instantiate a PrivateKey from a plain JavaScript object - * - * @param {Object} obj - The output from privateKey.toObject() - */ -PrivateKey.fromObject = function(obj) { - $.checkArgument(_.isObject(obj), 'First argument is expected to be an object.'); - return new PrivateKey(obj); -}; +function throwIfNotStringOrBuffer (val, prefix) { + if (!Buffer.isBuffer(val) && typeof val !== 'string') { + throw new TypeError(prefix + ' must be a string or a buffer') + } +} -/** - * Instantiate a PrivateKey from random bytes - * - * @param {string=} network - Either "livenet" or "testnet" - * @returns {PrivateKey} A new valid instance of PrivateKey - */ -PrivateKey.fromRandom = function(network) { - var bn = PrivateKey._getRandomBN(); - return new PrivateKey(bn, network); -}; +function HashBase (blockSize) { + Transform.call(this) -/** - * Check if there would be any errors when initializing a PrivateKey - * - * @param {string} data - The encoded data in various formats - * @param {string=} network - Either "livenet" or "testnet" - * @returns {null|Error} An error if exists - */ + this._block = Buffer.allocUnsafe(blockSize) + this._blockSize = blockSize + this._blockOffset = 0 + this._length = [0, 0, 0, 0] -PrivateKey.getValidationError = function(data, network) { - var error; + this._finalized = false +} + +inherits(HashBase, Transform) + +HashBase.prototype._transform = function (chunk, encoding, callback) { + var error = null try { - /* jshint nonew: false */ - new PrivateKey(data, network); - } catch (e) { - error = e; + this.update(chunk, encoding) + } catch (err) { + error = err } - return error; -}; -/** - * Check if the parameters are valid - * - * @param {string} data - The encoded data in various formats - * @param {string=} network - Either "livenet" or "testnet" - * @returns {Boolean} If the private key is would be valid - */ -PrivateKey.isValid = function(data, network){ - if (!data) { - return false; + callback(error) +} + +HashBase.prototype._flush = function (callback) { + var error = null + try { + this.push(this.digest()) + } catch (err) { + error = err } - return !PrivateKey.getValidationError(data, network); -}; -/** - * Will output the PrivateKey encoded as hex string - * - * @returns {string} - */ -PrivateKey.prototype.toString = function() { - return this.toBuffer().toString('hex'); -}; + callback(error) +} -/** - * Will output the PrivateKey to a WIF string - * - * @returns {string} A WIP representation of the private key - */ -PrivateKey.prototype.toWIF = function() { - var network = this.network; - var compressed = this.compressed; +HashBase.prototype.update = function (data, encoding) { + throwIfNotStringOrBuffer(data, 'Data') + if (this._finalized) throw new Error('Digest already called') + if (!Buffer.isBuffer(data)) data = Buffer.from(data, encoding) - var buf; - if (compressed) { - buf = Buffer.concat([Buffer.from([network.privatekey]), - this.bn.toBuffer({size: 32}), - Buffer.from([0x01])]); - } else { - buf = Buffer.concat([Buffer.from([network.privatekey]), - this.bn.toBuffer({size: 32})]); + // consume data + var block = this._block + var offset = 0 + while (this._blockOffset + data.length - offset >= this._blockSize) { + for (var i = this._blockOffset; i < this._blockSize;) block[i++] = data[offset++] + this._update() + this._blockOffset = 0 } + while (offset < data.length) block[this._blockOffset++] = data[offset++] - return Base58Check.encode(buf); -}; - -/** - * Will return the private key as a BN instance - * - * @returns {BN} A BN instance of the private key - */ -PrivateKey.prototype.toBigNumber = function(){ - return this.bn; -}; + // update length + for (var j = 0, carry = data.length * 8; carry > 0; ++j) { + this._length[j] += carry + carry = (this._length[j] / 0x0100000000) | 0 + if (carry > 0) this._length[j] -= 0x0100000000 * carry + } -/** - * Will return the private key as a BN buffer - * - * @returns {Buffer} A buffer of the private key - */ -PrivateKey.prototype.toBuffer = function(){ - // TODO: use `return this.bn.toBuffer({ size: 32 })` in v1.0.0 - return this.bn.toBuffer(); -}; + return this +} -/** - * WARNING: This method will not be officially supported until v1.0.0. - * - * - * Will return the private key as a BN buffer without leading zero padding - * - * @returns {Buffer} A buffer of the private key - */ -PrivateKey.prototype.toBufferNoPadding = function() { - return this.bn.toBuffer(); -}; +HashBase.prototype._update = function () { + throw new Error('_update is not implemented') +} -/** - * Will return the corresponding public key - * - * @returns {PublicKey} A public key generated from the private key - */ -PrivateKey.prototype.toPublicKey = function(){ - if (!this._pubkey) { - this._pubkey = PublicKey.fromPrivateKey(this); - } - return this._pubkey; -}; +HashBase.prototype.digest = function (encoding) { + if (this._finalized) throw new Error('Digest already called') + this._finalized = true -/** - * Will return an address for the private key - * @param {Network=} network - optional parameter specifying - * the desired network for the address - * - * @returns {Address} An address generated from the private key - */ -PrivateKey.prototype.toAddress = function(network) { - var pubkey = this.toPublicKey(); - return Address.fromPublicKey(pubkey, network || this.network); -}; + var digest = this._digest() + if (encoding !== undefined) digest = digest.toString(encoding) -/** - * @returns {Object} A plain object representation - */ -PrivateKey.prototype.toObject = PrivateKey.prototype.toJSON = function toObject() { - return { - bn: this.bn.toString('hex'), - compressed: this.compressed, - network: this.network.toString() - }; -}; + // reset state + this._block.fill(0) + this._blockOffset = 0 + for (var i = 0; i < 4; ++i) this._length[i] = 0 -/** - * Will return a string formatted for the console - * - * @returns {string} Private key - */ -PrivateKey.prototype.inspect = function() { - var uncompressed = !this.compressed ? ', uncompressed' : ''; - return ''; -}; + return digest +} -module.exports = PrivateKey; +HashBase.prototype._digest = function () { + throw new Error('_digest is not implemented') +} -}).call(this,require("buffer").Buffer) -},{"./address":164,"./crypto/bn":169,"./crypto/point":172,"./crypto/random":173,"./encoding/base58check":176,"./networks":184,"./publickey":187,"./util/js":207,"./util/preconditions":208,"buffer":52,"lodash":245}],187:[function(require,module,exports){ -(function (Buffer){ -'use strict'; +module.exports = HashBase -var BN = require('./crypto/bn'); -var Point = require('./crypto/point'); -var Hash = require('./crypto/hash'); -var JSUtil = require('./util/js'); -var Network = require('./networks'); -var _ = require('lodash'); -var $ = require('./util/preconditions'); +},{"inherits":153,"safe-buffer":199,"stream":208}],138:[function(require,module,exports){ +var hash = exports; -/** - * Instantiate a PublicKey from a {@link PrivateKey}, {@link Point}, `string`, or `Buffer`. - * - * There are two internal properties, `network` and `compressed`, that deal with importing - * a PublicKey from a PrivateKey in WIF format. More details described on {@link PrivateKey} - * - * @example - * ```javascript - * // instantiate from a private key - * var key = PublicKey(privateKey, true); - * - * // export to as a DER hex encoded string - * var exported = key.toString(); - * - * // import the public key - * var imported = PublicKey.fromString(exported); - * ``` - * - * @param {string} data - The encoded data in various formats - * @param {Object} extra - additional options - * @param {Network=} extra.network - Which network should the address for this public key be for - * @param {String=} extra.compressed - If the public key is compressed - * @returns {PublicKey} A new valid instance of an PublicKey - * @constructor - */ -function PublicKey(data, extra) { +hash.utils = require('./hash/utils'); +hash.common = require('./hash/common'); +hash.sha = require('./hash/sha'); +hash.ripemd = require('./hash/ripemd'); +hash.hmac = require('./hash/hmac'); - if (!(this instanceof PublicKey)) { - return new PublicKey(data, extra); - } +// Proxy hash functions to the main object +hash.sha1 = hash.sha.sha1; +hash.sha256 = hash.sha.sha256; +hash.sha224 = hash.sha.sha224; +hash.sha384 = hash.sha.sha384; +hash.sha512 = hash.sha.sha512; +hash.ripemd160 = hash.ripemd.ripemd160; - $.checkArgument(data, 'First argument is required, please include public key data.'); +},{"./hash/common":139,"./hash/hmac":140,"./hash/ripemd":141,"./hash/sha":142,"./hash/utils":149}],139:[function(require,module,exports){ +'use strict'; - if (data instanceof PublicKey) { - // Return copy, but as it's an immutable object, return same argument - return data; - } - extra = extra || {}; +var utils = require('./utils'); +var assert = require('minimalistic-assert'); - var info = this._classifyArgs(data, extra); +function BlockHash() { + this.pending = null; + this.pendingTotal = 0; + this.blockSize = this.constructor.blockSize; + this.outSize = this.constructor.outSize; + this.hmacStrength = this.constructor.hmacStrength; + this.padLength = this.constructor.padLength / 8; + this.endian = 'big'; - // validation - info.point.validate(); + this._delta8 = this.blockSize / 8; + this._delta32 = this.blockSize / 32; +} +exports.BlockHash = BlockHash; - JSUtil.defineImmutable(this, { - point: info.point, - compressed: info.compressed, - network: info.network || Network.defaultNetwork - }); +BlockHash.prototype.update = function update(msg, enc) { + // Convert message to array, pad it, and join into 32bit blocks + msg = utils.toArray(msg, enc); + if (!this.pending) + this.pending = msg; + else + this.pending = this.pending.concat(msg); + this.pendingTotal += msg.length; - return this; -}; + // Enough data, try updating + if (this.pending.length >= this._delta8) { + msg = this.pending; -/** - * Internal function to differentiate between arguments passed to the constructor - * @param {*} data - * @param {Object} extra - */ -PublicKey.prototype._classifyArgs = function(data, extra) { - /* jshint maxcomplexity: 10 */ - var info = { - compressed: _.isUndefined(extra.compressed) || extra.compressed - }; + // Process pending data in blocks + var r = msg.length % this._delta8; + this.pending = msg.slice(msg.length - r, msg.length); + if (this.pending.length === 0) + this.pending = null; - // detect type of data - if (data instanceof Point) { - info.point = data; - } else if (data.x && data.y) { - info = PublicKey._transformObject(data); - } else if (typeof(data) === 'string') { - info = PublicKey._transformDER(Buffer.from(data, 'hex')); - } else if (PublicKey._isBuffer(data)) { - info = PublicKey._transformDER(data); - } else if (PublicKey._isPrivateKey(data)) { - info = PublicKey._transformPrivateKey(data); - } else { - throw new TypeError('First argument is an unrecognized data format.'); - } - if (!info.network) { - info.network = _.isUndefined(extra.network) ? undefined : Network.get(extra.network); + msg = utils.join32(msg, 0, msg.length - r, this.endian); + for (var i = 0; i < msg.length; i += this._delta32) + this._update(msg, i, i + this._delta32); } - return info; -}; -/** - * Internal function to detect if an object is a {@link PrivateKey} - * - * @param {*} param - object to test - * @returns {boolean} - * @private - */ -PublicKey._isPrivateKey = function(param) { - var PrivateKey = require('./privatekey'); - return param instanceof PrivateKey; + return this; }; -/** - * Internal function to detect if an object is a Buffer - * - * @param {*} param - object to test - * @returns {boolean} - * @private - */ -PublicKey._isBuffer = function(param) { - return (param instanceof Buffer) || (param instanceof Uint8Array); -}; +BlockHash.prototype.digest = function digest(enc) { + this.update(this._pad()); + assert(this.pending === null); -/** - * Internal function to transform a private key into a public key point - * - * @param {PrivateKey} privkey - An instance of PrivateKey - * @returns {Object} An object with keys: point and compressed - * @private - */ -PublicKey._transformPrivateKey = function(privkey) { - $.checkArgument(PublicKey._isPrivateKey(privkey), 'Must be an instance of PrivateKey'); - var info = {}; - info.point = Point.getG().mul(privkey.bn); - info.compressed = privkey.compressed; - info.network = privkey.network; - return info; + return this._digest(enc); }; -/** - * Internal function to transform DER into a public key point - * - * @param {Buffer} buf - An hex encoded buffer - * @param {bool=} strict - if set to false, will loosen some conditions - * @returns {Object} An object with keys: point and compressed - * @private - */ -PublicKey._transformDER = function(buf, strict) { - /* jshint maxstatements: 30 */ - /* jshint maxcomplexity: 12 */ - $.checkArgument(PublicKey._isBuffer(buf), 'Must be a hex buffer of DER encoded public key'); - var info = {}; - - strict = _.isUndefined(strict) ? true : strict; +BlockHash.prototype._pad = function pad() { + var len = this.pendingTotal; + var bytes = this._delta8; + var k = bytes - ((len + this.padLength) % bytes); + var res = new Array(k + this.padLength); + res[0] = 0x80; + for (var i = 1; i < k; i++) + res[i] = 0; - var x; - var y; - var xbuf; - var ybuf; + // Append length + len <<= 3; + if (this.endian === 'big') { + for (var t = 8; t < this.padLength; t++) + res[i++] = 0; - if (buf[0] === 0x04 || (!strict && (buf[0] === 0x06 || buf[0] === 0x07))) { - xbuf = buf.slice(1, 33); - ybuf = buf.slice(33, 65); - if (xbuf.length !== 32 || ybuf.length !== 32 || buf.length !== 65) { - throw new TypeError('Length of x and y must be 32 bytes'); - } - x = new BN(xbuf); - y = new BN(ybuf); - info.point = new Point(x, y); - info.compressed = false; - } else if (buf[0] === 0x03) { - xbuf = buf.slice(1); - x = new BN(xbuf); - info = PublicKey._transformX(true, x); - info.compressed = true; - } else if (buf[0] === 0x02) { - xbuf = buf.slice(1); - x = new BN(xbuf); - info = PublicKey._transformX(false, x); - info.compressed = true; + res[i++] = 0; + res[i++] = 0; + res[i++] = 0; + res[i++] = 0; + res[i++] = (len >>> 24) & 0xff; + res[i++] = (len >>> 16) & 0xff; + res[i++] = (len >>> 8) & 0xff; + res[i++] = len & 0xff; } else { - throw new TypeError('Invalid DER format public key'); + res[i++] = len & 0xff; + res[i++] = (len >>> 8) & 0xff; + res[i++] = (len >>> 16) & 0xff; + res[i++] = (len >>> 24) & 0xff; + res[i++] = 0; + res[i++] = 0; + res[i++] = 0; + res[i++] = 0; + + for (t = 8; t < this.padLength; t++) + res[i++] = 0; } - return info; -}; -/** - * Internal function to transform X into a public key point - * - * @param {Boolean} odd - If the point is above or below the x axis - * @param {Point} x - The x point - * @returns {Object} An object with keys: point and compressed - * @private - */ -PublicKey._transformX = function(odd, x) { - $.checkArgument(typeof odd === 'boolean', 'Must specify whether y is odd or not (true or false)'); - var info = {}; - info.point = Point.fromX(odd, x); - return info; + return res; }; -/** - * Internal function to transform a JSON into a public key point - * - * @param {String|Object} json - a JSON string or plain object - * @returns {Object} An object with keys: point and compressed - * @private - */ -PublicKey._transformObject = function(json) { - var x = new BN(json.x, 'hex'); - var y = new BN(json.y, 'hex'); - var point = new Point(x, y); - return new PublicKey(point, { - compressed: json.compressed - }); -}; +},{"./utils":149,"minimalistic-assert":159}],140:[function(require,module,exports){ +'use strict'; -/** - * Instantiate a PublicKey from a PrivateKey - * - * @param {PrivateKey} privkey - An instance of PrivateKey - * @returns {PublicKey} A new valid instance of PublicKey - */ -PublicKey.fromPrivateKey = function(privkey) { - $.checkArgument(PublicKey._isPrivateKey(privkey), 'Must be an instance of PrivateKey'); - var info = PublicKey._transformPrivateKey(privkey); - return new PublicKey(info.point, { - compressed: info.compressed, - network: info.network - }); -}; +var utils = require('./utils'); +var assert = require('minimalistic-assert'); -/** - * Instantiate a PublicKey from a Buffer - * @param {Buffer} buf - A DER hex buffer - * @param {bool=} strict - if set to false, will loosen some conditions - * @returns {PublicKey} A new valid instance of PublicKey - */ -PublicKey.fromDER = PublicKey.fromBuffer = function(buf, strict) { - $.checkArgument(PublicKey._isBuffer(buf), 'Must be a hex buffer of DER encoded public key'); - var info = PublicKey._transformDER(buf, strict); - return new PublicKey(info.point, { - compressed: info.compressed - }); -}; +function Hmac(hash, key, enc) { + if (!(this instanceof Hmac)) + return new Hmac(hash, key, enc); + this.Hash = hash; + this.blockSize = hash.blockSize / 8; + this.outSize = hash.outSize / 8; + this.inner = null; + this.outer = null; -/** - * Instantiate a PublicKey from a Point - * - * @param {Point} point - A Point instance - * @param {boolean=} compressed - whether to store this public key as compressed format - * @returns {PublicKey} A new valid instance of PublicKey - */ -PublicKey.fromPoint = function(point, compressed) { - $.checkArgument(point instanceof Point, 'First argument must be an instance of Point.'); - return new PublicKey(point, { - compressed: compressed - }); -}; + this._init(utils.toArray(key, enc)); +} +module.exports = Hmac; -/** - * Instantiate a PublicKey from a DER hex encoded string - * - * @param {string} str - A DER hex string - * @param {String=} encoding - The type of string encoding - * @returns {PublicKey} A new valid instance of PublicKey - */ -PublicKey.fromString = function(str, encoding) { - var buf = Buffer.from(str, encoding || 'hex'); - var info = PublicKey._transformDER(buf); - return new PublicKey(info.point, { - compressed: info.compressed - }); -}; +Hmac.prototype._init = function init(key) { + // Shorten key, if needed + if (key.length > this.blockSize) + key = new this.Hash().update(key).digest(); + assert(key.length <= this.blockSize); -/** - * Instantiate a PublicKey from an X Point - * - * @param {Boolean} odd - If the point is above or below the x axis - * @param {Point} x - The x point - * @returns {PublicKey} A new valid instance of PublicKey - */ -PublicKey.fromX = function(odd, x) { - var info = PublicKey._transformX(odd, x); - return new PublicKey(info.point, { - compressed: info.compressed - }); -}; + // Add padding to key + for (var i = key.length; i < this.blockSize; i++) + key.push(0); -/** - * Check if there would be any errors when initializing a PublicKey - * - * @param {string} data - The encoded data in various formats - * @returns {null|Error} An error if exists - */ -PublicKey.getValidationError = function(data) { - var error; - try { - /* jshint nonew: false */ - new PublicKey(data); - } catch (e) { - error = e; - } - return error; + for (i = 0; i < key.length; i++) + key[i] ^= 0x36; + this.inner = new this.Hash().update(key); + + // 0x36 ^ 0x5c = 0x6a + for (i = 0; i < key.length; i++) + key[i] ^= 0x6a; + this.outer = new this.Hash().update(key); }; -/** - * Check if the parameters are valid - * - * @param {string} data - The encoded data in various formats - * @returns {Boolean} If the public key would be valid - */ -PublicKey.isValid = function(data) { - return !PublicKey.getValidationError(data); +Hmac.prototype.update = function update(msg, enc) { + this.inner.update(msg, enc); + return this; }; -/** - * @returns {Object} A plain object of the PublicKey - */ -PublicKey.prototype.toObject = PublicKey.prototype.toJSON = function toObject() { - return { - x: this.point.getX().toString('hex', 2), - y: this.point.getY().toString('hex', 2), - compressed: this.compressed - }; +Hmac.prototype.digest = function digest(enc) { + this.outer.update(this.inner.digest()); + return this.outer.digest(enc); }; -/** - * Will output the PublicKey to a DER Buffer - * - * @returns {Buffer} A DER hex encoded buffer - */ -PublicKey.prototype.toBuffer = PublicKey.prototype.toDER = function() { - var x = this.point.getX(); - var y = this.point.getY(); +},{"./utils":149,"minimalistic-assert":159}],141:[function(require,module,exports){ +'use strict'; - var xbuf = x.toBuffer({ - size: 32 - }); - var ybuf = y.toBuffer({ - size: 32 - }); +var utils = require('./utils'); +var common = require('./common'); - var prefix; - if (!this.compressed) { - prefix = Buffer.from([0x04]); - return Buffer.concat([prefix, xbuf, ybuf]); - } else { - var odd = ybuf[ybuf.length - 1] % 2; - if (odd) { - prefix = Buffer.from([0x03]); - } else { - prefix = Buffer.from([0x02]); - } - return Buffer.concat([prefix, xbuf]); +var rotl32 = utils.rotl32; +var sum32 = utils.sum32; +var sum32_3 = utils.sum32_3; +var sum32_4 = utils.sum32_4; +var BlockHash = common.BlockHash; + +function RIPEMD160() { + if (!(this instanceof RIPEMD160)) + return new RIPEMD160(); + + BlockHash.call(this); + + this.h = [ 0x67452301, 0xefcdab89, 0x98badcfe, 0x10325476, 0xc3d2e1f0 ]; + this.endian = 'little'; +} +utils.inherits(RIPEMD160, BlockHash); +exports.ripemd160 = RIPEMD160; + +RIPEMD160.blockSize = 512; +RIPEMD160.outSize = 160; +RIPEMD160.hmacStrength = 192; +RIPEMD160.padLength = 64; + +RIPEMD160.prototype._update = function update(msg, start) { + var A = this.h[0]; + var B = this.h[1]; + var C = this.h[2]; + var D = this.h[3]; + var E = this.h[4]; + var Ah = A; + var Bh = B; + var Ch = C; + var Dh = D; + var Eh = E; + for (var j = 0; j < 80; j++) { + var T = sum32( + rotl32( + sum32_4(A, f(j, B, C, D), msg[r[j] + start], K(j)), + s[j]), + E); + A = E; + E = D; + D = rotl32(C, 10); + C = B; + B = T; + T = sum32( + rotl32( + sum32_4(Ah, f(79 - j, Bh, Ch, Dh), msg[rh[j] + start], Kh(j)), + sh[j]), + Eh); + Ah = Eh; + Eh = Dh; + Dh = rotl32(Ch, 10); + Ch = Bh; + Bh = T; } + T = sum32_3(this.h[1], C, Dh); + this.h[1] = sum32_3(this.h[2], D, Eh); + this.h[2] = sum32_3(this.h[3], E, Ah); + this.h[3] = sum32_3(this.h[4], A, Bh); + this.h[4] = sum32_3(this.h[0], B, Ch); + this.h[0] = T; }; -/** - * Will return a sha256 + ripemd160 hash of the serialized public key - * @see https://github.com/bitcoin/bitcoin/blob/master/src/pubkey.h#L141 - * @returns {Buffer} - */ -PublicKey.prototype._getID = function _getID() { - return Hash.sha256ripemd160(this.toBuffer()); +RIPEMD160.prototype._digest = function digest(enc) { + if (enc === 'hex') + return utils.toHex32(this.h, 'little'); + else + return utils.split32(this.h, 'little'); }; -/** - * Will return an address for the public key - * - * @param {String|Network=} network - Which network should the address be for - * @returns {Address} An address generated from the public key - */ -PublicKey.prototype.toAddress = function(network) { - var Address = require('./address'); - return Address.fromPublicKey(this, network || this.network); -}; +function f(j, x, y, z) { + if (j <= 15) + return x ^ y ^ z; + else if (j <= 31) + return (x & y) | ((~x) & z); + else if (j <= 47) + return (x | (~y)) ^ z; + else if (j <= 63) + return (x & z) | (y & (~z)); + else + return x ^ (y | (~z)); +} -/** - * Will output the PublicKey to a DER encoded hex string - * - * @returns {string} A DER hex encoded string - */ -PublicKey.prototype.toString = function() { - return this.toDER().toString('hex'); -}; +function K(j) { + if (j <= 15) + return 0x00000000; + else if (j <= 31) + return 0x5a827999; + else if (j <= 47) + return 0x6ed9eba1; + else if (j <= 63) + return 0x8f1bbcdc; + else + return 0xa953fd4e; +} -/** - * Will return a string formatted for the console - * - * @returns {string} Public key - */ -PublicKey.prototype.inspect = function() { - return ''; -}; +function Kh(j) { + if (j <= 15) + return 0x50a28be6; + else if (j <= 31) + return 0x5c4dd124; + else if (j <= 47) + return 0x6d703ef3; + else if (j <= 63) + return 0x7a6d76e9; + else + return 0x00000000; +} +var r = [ + 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, + 7, 4, 13, 1, 10, 6, 15, 3, 12, 0, 9, 5, 2, 14, 11, 8, + 3, 10, 14, 4, 9, 15, 8, 1, 2, 7, 0, 6, 13, 11, 5, 12, + 1, 9, 11, 10, 0, 8, 12, 4, 13, 3, 7, 15, 14, 5, 6, 2, + 4, 0, 5, 9, 7, 12, 2, 10, 14, 1, 3, 8, 11, 6, 15, 13 +]; -module.exports = PublicKey; +var rh = [ + 5, 14, 7, 0, 9, 2, 11, 4, 13, 6, 15, 8, 1, 10, 3, 12, + 6, 11, 3, 7, 0, 13, 5, 10, 14, 15, 8, 12, 4, 9, 1, 2, + 15, 5, 1, 3, 7, 14, 6, 9, 11, 8, 12, 2, 10, 0, 4, 13, + 8, 6, 4, 1, 3, 11, 15, 0, 5, 12, 2, 13, 9, 7, 10, 14, + 12, 15, 10, 4, 1, 5, 8, 7, 6, 2, 13, 14, 0, 3, 9, 11 +]; -}).call(this,require("buffer").Buffer) -},{"./address":164,"./crypto/bn":169,"./crypto/hash":171,"./crypto/point":172,"./networks":184,"./privatekey":186,"./util/js":207,"./util/preconditions":208,"buffer":52,"lodash":245}],188:[function(require,module,exports){ -module.exports = require('./script'); +var s = [ + 11, 14, 15, 12, 5, 8, 7, 9, 11, 13, 14, 15, 6, 7, 9, 8, + 7, 6, 8, 13, 11, 9, 7, 15, 7, 12, 15, 9, 11, 7, 13, 12, + 11, 13, 6, 7, 14, 9, 13, 15, 14, 8, 13, 6, 5, 12, 7, 5, + 11, 12, 14, 15, 14, 15, 9, 8, 9, 14, 5, 6, 8, 6, 5, 12, + 9, 15, 5, 11, 6, 8, 13, 12, 5, 12, 13, 14, 11, 8, 5, 6 +]; -module.exports.Interpreter = require('./interpreter'); +var sh = [ + 8, 9, 9, 11, 13, 15, 15, 5, 7, 7, 8, 11, 14, 14, 12, 6, + 9, 13, 15, 7, 12, 8, 9, 11, 7, 7, 12, 7, 6, 15, 13, 11, + 9, 7, 15, 11, 8, 6, 6, 14, 12, 13, 5, 14, 13, 13, 7, 5, + 15, 5, 8, 11, 14, 14, 6, 14, 6, 9, 12, 9, 12, 5, 15, 8, + 8, 5, 12, 9, 12, 5, 14, 6, 8, 13, 6, 5, 15, 13, 11, 11 +]; -},{"./interpreter":189,"./script":190}],189:[function(require,module,exports){ -(function (Buffer){ +},{"./common":139,"./utils":149}],142:[function(require,module,exports){ 'use strict'; -var _ = require('lodash'); +exports.sha1 = require('./sha/1'); +exports.sha224 = require('./sha/224'); +exports.sha256 = require('./sha/256'); +exports.sha384 = require('./sha/384'); +exports.sha512 = require('./sha/512'); -var Script = require('./script'); -var Opcode = require('../opcode'); -var BN = require('../crypto/bn'); -var Hash = require('../crypto/hash'); -var Signature = require('../crypto/signature'); -var PublicKey = require('../publickey'); +},{"./sha/1":143,"./sha/224":144,"./sha/256":145,"./sha/384":146,"./sha/512":147}],143:[function(require,module,exports){ +'use strict'; -/** - * Bitcoin transactions contain scripts. Each input has a script called the - * scriptSig, and each output has a script called the scriptPubkey. To validate - * an input, the input's script is concatenated with the referenced output script, - * and the result is executed. If at the end of execution the stack contains a - * "true" value, then the transaction is valid. - * - * The primary way to use this class is via the verify function. - * e.g., Interpreter().verify( ... ); - */ -var Interpreter = function Interpreter(obj) { - if (!(this instanceof Interpreter)) { - return new Interpreter(obj); - } - if (obj) { - this.initialize(); - this.set(obj); - } else { - this.initialize(); +var utils = require('../utils'); +var common = require('../common'); +var shaCommon = require('./common'); + +var rotl32 = utils.rotl32; +var sum32 = utils.sum32; +var sum32_5 = utils.sum32_5; +var ft_1 = shaCommon.ft_1; +var BlockHash = common.BlockHash; + +var sha1_K = [ + 0x5A827999, 0x6ED9EBA1, + 0x8F1BBCDC, 0xCA62C1D6 +]; + +function SHA1() { + if (!(this instanceof SHA1)) + return new SHA1(); + + BlockHash.call(this); + this.h = [ + 0x67452301, 0xefcdab89, 0x98badcfe, + 0x10325476, 0xc3d2e1f0 ]; + this.W = new Array(80); +} + +utils.inherits(SHA1, BlockHash); +module.exports = SHA1; + +SHA1.blockSize = 512; +SHA1.outSize = 160; +SHA1.hmacStrength = 80; +SHA1.padLength = 64; + +SHA1.prototype._update = function _update(msg, start) { + var W = this.W; + + for (var i = 0; i < 16; i++) + W[i] = msg[start + i]; + + for(; i < W.length; i++) + W[i] = rotl32(W[i - 3] ^ W[i - 8] ^ W[i - 14] ^ W[i - 16], 1); + + var a = this.h[0]; + var b = this.h[1]; + var c = this.h[2]; + var d = this.h[3]; + var e = this.h[4]; + + for (i = 0; i < W.length; i++) { + var s = ~~(i / 20); + var t = sum32_5(rotl32(a, 5), ft_1(s, b, c, d), e, W[i], sha1_K[s]); + e = d; + d = c; + c = rotl32(b, 30); + b = a; + a = t; } + + this.h[0] = sum32(this.h[0], a); + this.h[1] = sum32(this.h[1], b); + this.h[2] = sum32(this.h[2], c); + this.h[3] = sum32(this.h[3], d); + this.h[4] = sum32(this.h[4], e); }; -Interpreter.prototype.verifyWitnessProgram = function(version, program, witness, satoshis, flags) { +SHA1.prototype._digest = function digest(enc) { + if (enc === 'hex') + return utils.toHex32(this.h, 'big'); + else + return utils.split32(this.h, 'big'); +}; - var scriptPubKey = new Script(); - var stack = []; +},{"../common":139,"../utils":149,"./common":148}],144:[function(require,module,exports){ +'use strict'; - if (version === 0) { - if (program.length === 32) { - if (witness.length === 0) { - this.errstr = 'SCRIPT_ERR_WITNESS_PROGRAM_WITNESS_EMPTY'; - return false; - } +var utils = require('../utils'); +var SHA256 = require('./256'); - var scriptPubKeyBuffer = witness[witness.length - 1]; - scriptPubKey = new Script(scriptPubKeyBuffer); - var hash = Hash.sha256(scriptPubKeyBuffer); - if (hash.toString('hex') !== program.toString('hex')) { - this.errstr = 'SCRIPT_ERR_WITNESS_PROGRAM_MISMATCH'; - return false; - } +function SHA224() { + if (!(this instanceof SHA224)) + return new SHA224(); - stack = witness.slice(0, -1); - } else if (program.length === 20) { - if (witness.length !== 2) { - this.errstr = 'SCRIPT_ERR_WITNESS_PROGRAM_MISMATCH'; - return false; - } + SHA256.call(this); + this.h = [ + 0xc1059ed8, 0x367cd507, 0x3070dd17, 0xf70e5939, + 0xffc00b31, 0x68581511, 0x64f98fa7, 0xbefa4fa4 ]; +} +utils.inherits(SHA224, SHA256); +module.exports = SHA224; + +SHA224.blockSize = 512; +SHA224.outSize = 224; +SHA224.hmacStrength = 192; +SHA224.padLength = 64; - scriptPubKey.add(Opcode.OP_DUP); - scriptPubKey.add(Opcode.OP_HASH160); - scriptPubKey.add(program); - scriptPubKey.add(Opcode.OP_EQUALVERIFY); - scriptPubKey.add(Opcode.OP_CHECKSIG); +SHA224.prototype._digest = function digest(enc) { + // Just truncate output + if (enc === 'hex') + return utils.toHex32(this.h.slice(0, 7), 'big'); + else + return utils.split32(this.h.slice(0, 7), 'big'); +}; - stack = witness; - } else { - this.errstr = 'SCRIPT_ERR_WITNESS_PROGRAM_WRONG_LENGTH'; - return false; - } - } else if ((flags & Interpreter.SCRIPT_VERIFY_DISCOURAGE_UPGRADABLE_WITNESS_PROGRAM)) { - this.errstr = 'SCRIPT_ERR_DISCOURAGE_UPGRADABLE_WITNESS_PROGRAM'; - return false; - } else { - return true; - } +},{"../utils":149,"./256":145}],145:[function(require,module,exports){ +'use strict'; - this.initialize(); +var utils = require('../utils'); +var common = require('../common'); +var shaCommon = require('./common'); +var assert = require('minimalistic-assert'); - this.set({ - script: scriptPubKey, - stack: stack, - sigversion: 1, - satoshis: satoshis, - flags: flags, - }); +var sum32 = utils.sum32; +var sum32_4 = utils.sum32_4; +var sum32_5 = utils.sum32_5; +var ch32 = shaCommon.ch32; +var maj32 = shaCommon.maj32; +var s0_256 = shaCommon.s0_256; +var s1_256 = shaCommon.s1_256; +var g0_256 = shaCommon.g0_256; +var g1_256 = shaCommon.g1_256; - if (!this.evaluate()) { - return false; - } +var BlockHash = common.BlockHash; - if (this.stack.length !== 1) { - this.errstr = 'SCRIPT_ERR_EVAL_FALSE'; - return false; - } +var sha256_K = [ + 0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5, + 0x3956c25b, 0x59f111f1, 0x923f82a4, 0xab1c5ed5, + 0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3, + 0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174, + 0xe49b69c1, 0xefbe4786, 0x0fc19dc6, 0x240ca1cc, + 0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da, + 0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7, + 0xc6e00bf3, 0xd5a79147, 0x06ca6351, 0x14292967, + 0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13, + 0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85, + 0xa2bfe8a1, 0xa81a664b, 0xc24b8b70, 0xc76c51a3, + 0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070, + 0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5, + 0x391c0cb3, 0x4ed8aa4a, 0x5b9cca4f, 0x682e6ff3, + 0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208, + 0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2 +]; - var buf = this.stack[this.stack.length - 1]; - if (!Interpreter.castToBool(buf)) { - this.errstr = 'SCRIPT_ERR_EVAL_FALSE_IN_STACK'; - return false; - } +function SHA256() { + if (!(this instanceof SHA256)) + return new SHA256(); - return true; -}; + BlockHash.call(this); + this.h = [ + 0x6a09e667, 0xbb67ae85, 0x3c6ef372, 0xa54ff53a, + 0x510e527f, 0x9b05688c, 0x1f83d9ab, 0x5be0cd19 + ]; + this.k = sha256_K; + this.W = new Array(64); +} +utils.inherits(SHA256, BlockHash); +module.exports = SHA256; +SHA256.blockSize = 512; +SHA256.outSize = 256; +SHA256.hmacStrength = 192; +SHA256.padLength = 64; +SHA256.prototype._update = function _update(msg, start) { + var W = this.W; -/** - * Verifies a Script by executing it and returns true if it is valid. - * This function needs to be provided with the scriptSig and the scriptPubkey - * separately. - * @param {Script} scriptSig - the script's first part (corresponding to the tx input) - * @param {Script} scriptPubkey - the script's last part (corresponding to the tx output) - * @param {Transaction=} tx - the Transaction containing the scriptSig in one input (used - * to check signature validity for some opcodes like OP_CHECKSIG) - * @param {number} nin - index of the transaction input containing the scriptSig verified. - * @param {number} flags - evaluation flags. See Interpreter.SCRIPT_* constants - * @param {number} witness - array of witness data - * @param {number} satoshis - number of satoshis created by this output - * - * Translated from bitcoind's VerifyScript - */ -Interpreter.prototype.verify = function(scriptSig, scriptPubkey, tx, nin, flags, witness, satoshis) { + for (var i = 0; i < 16; i++) + W[i] = msg[start + i]; + for (; i < W.length; i++) + W[i] = sum32_4(g1_256(W[i - 2]), W[i - 7], g0_256(W[i - 15]), W[i - 16]); - var Transaction = require('../transaction'); - if (_.isUndefined(tx)) { - tx = new Transaction(); - } - if (_.isUndefined(nin)) { - nin = 0; - } - if (_.isUndefined(flags)) { - flags = 0; - } - if (_.isUndefined(witness)) { - witness = null; - } - if (_.isUndefined(satoshis)) { - satoshis = 0; + var a = this.h[0]; + var b = this.h[1]; + var c = this.h[2]; + var d = this.h[3]; + var e = this.h[4]; + var f = this.h[5]; + var g = this.h[6]; + var h = this.h[7]; + + assert(this.k.length === W.length); + for (i = 0; i < W.length; i++) { + var T1 = sum32_5(h, s1_256(e), ch32(e, f, g), this.k[i], W[i]); + var T2 = sum32(s0_256(a), maj32(a, b, c)); + h = g; + g = f; + f = e; + e = sum32(d, T1); + d = c; + c = b; + b = a; + a = sum32(T1, T2); } - this.set({ - script: scriptSig, - tx: tx, - nin: nin, - sigversion: 0, - satoshis: 0, - flags: flags - }); - var stackCopy; + this.h[0] = sum32(this.h[0], a); + this.h[1] = sum32(this.h[1], b); + this.h[2] = sum32(this.h[2], c); + this.h[3] = sum32(this.h[3], d); + this.h[4] = sum32(this.h[4], e); + this.h[5] = sum32(this.h[5], f); + this.h[6] = sum32(this.h[6], g); + this.h[7] = sum32(this.h[7], h); +}; - if ((flags & Interpreter.SCRIPT_VERIFY_SIGPUSHONLY) !== 0 && !scriptSig.isPushOnly()) { - this.errstr = 'SCRIPT_ERR_SIG_PUSHONLY'; - return false; - } +SHA256.prototype._digest = function digest(enc) { + if (enc === 'hex') + return utils.toHex32(this.h, 'big'); + else + return utils.split32(this.h, 'big'); +}; - // evaluate scriptSig - if (!this.evaluate()) { - return false; - } +},{"../common":139,"../utils":149,"./common":148,"minimalistic-assert":159}],146:[function(require,module,exports){ +'use strict'; - if (flags & Interpreter.SCRIPT_VERIFY_P2SH) { - stackCopy = this.stack.slice(); - } +var utils = require('../utils'); - var stack = this.stack; - this.initialize(); - this.set({ - script: scriptPubkey, - stack: stack, - tx: tx, - nin: nin, - flags: flags - }); +var SHA512 = require('./512'); - // evaluate scriptPubkey - if (!this.evaluate()) { - return false; - } +function SHA384() { + if (!(this instanceof SHA384)) + return new SHA384(); - if (this.stack.length === 0) { - this.errstr = 'SCRIPT_ERR_EVAL_FALSE_NO_RESULT'; - return false; - } + SHA512.call(this); + this.h = [ + 0xcbbb9d5d, 0xc1059ed8, + 0x629a292a, 0x367cd507, + 0x9159015a, 0x3070dd17, + 0x152fecd8, 0xf70e5939, + 0x67332667, 0xffc00b31, + 0x8eb44a87, 0x68581511, + 0xdb0c2e0d, 0x64f98fa7, + 0x47b5481d, 0xbefa4fa4 ]; +} +utils.inherits(SHA384, SHA512); +module.exports = SHA384; - var buf = this.stack[this.stack.length - 1]; - if (!Interpreter.castToBool(buf)) { - this.errstr = 'SCRIPT_ERR_EVAL_FALSE_IN_STACK'; - return false; - } +SHA384.blockSize = 1024; +SHA384.outSize = 384; +SHA384.hmacStrength = 192; +SHA384.padLength = 128; - var hadWitness = false; - if ((flags & Interpreter.SCRIPT_VERIFY_WITNESS)) { - var witnessValues = {}; - if (scriptPubkey.isWitnessProgram(witnessValues)) { - hadWitness = true; - if (scriptSig.toBuffer().length !== 0) { - return false; - } - if (!this.verifyWitnessProgram(witnessValues.version, witnessValues.program, witness, satoshis, this.flags)) { - return false; - } - } - } +SHA384.prototype._digest = function digest(enc) { + if (enc === 'hex') + return utils.toHex32(this.h.slice(0, 12), 'big'); + else + return utils.split32(this.h.slice(0, 12), 'big'); +}; - // Additional validation for spend-to-script-hash transactions: - if ((flags & Interpreter.SCRIPT_VERIFY_P2SH) && scriptPubkey.isScriptHashOut()) { - // scriptSig must be literals-only or validation fails - if (!scriptSig.isPushOnly()) { - this.errstr = 'SCRIPT_ERR_SIG_PUSHONLY'; - return false; - } +},{"../utils":149,"./512":147}],147:[function(require,module,exports){ +'use strict'; - // stackCopy cannot be empty here, because if it was the - // P2SH HASH <> EQUAL scriptPubKey would be evaluated with - // an empty stack and the EvalScript above would return false. - if (stackCopy.length === 0) { - throw new Error('internal error - stack copy empty'); - } +var utils = require('../utils'); +var common = require('../common'); +var assert = require('minimalistic-assert'); - var redeemScriptSerialized = stackCopy[stackCopy.length - 1]; - var redeemScript = Script.fromBuffer(redeemScriptSerialized); - stackCopy.pop(); +var rotr64_hi = utils.rotr64_hi; +var rotr64_lo = utils.rotr64_lo; +var shr64_hi = utils.shr64_hi; +var shr64_lo = utils.shr64_lo; +var sum64 = utils.sum64; +var sum64_hi = utils.sum64_hi; +var sum64_lo = utils.sum64_lo; +var sum64_4_hi = utils.sum64_4_hi; +var sum64_4_lo = utils.sum64_4_lo; +var sum64_5_hi = utils.sum64_5_hi; +var sum64_5_lo = utils.sum64_5_lo; - this.initialize(); - this.set({ - script: redeemScript, - stack: stackCopy, - tx: tx, - nin: nin, - flags: flags - }); +var BlockHash = common.BlockHash; - // evaluate redeemScript - if (!this.evaluate()) { - return false; - } +var sha512_K = [ + 0x428a2f98, 0xd728ae22, 0x71374491, 0x23ef65cd, + 0xb5c0fbcf, 0xec4d3b2f, 0xe9b5dba5, 0x8189dbbc, + 0x3956c25b, 0xf348b538, 0x59f111f1, 0xb605d019, + 0x923f82a4, 0xaf194f9b, 0xab1c5ed5, 0xda6d8118, + 0xd807aa98, 0xa3030242, 0x12835b01, 0x45706fbe, + 0x243185be, 0x4ee4b28c, 0x550c7dc3, 0xd5ffb4e2, + 0x72be5d74, 0xf27b896f, 0x80deb1fe, 0x3b1696b1, + 0x9bdc06a7, 0x25c71235, 0xc19bf174, 0xcf692694, + 0xe49b69c1, 0x9ef14ad2, 0xefbe4786, 0x384f25e3, + 0x0fc19dc6, 0x8b8cd5b5, 0x240ca1cc, 0x77ac9c65, + 0x2de92c6f, 0x592b0275, 0x4a7484aa, 0x6ea6e483, + 0x5cb0a9dc, 0xbd41fbd4, 0x76f988da, 0x831153b5, + 0x983e5152, 0xee66dfab, 0xa831c66d, 0x2db43210, + 0xb00327c8, 0x98fb213f, 0xbf597fc7, 0xbeef0ee4, + 0xc6e00bf3, 0x3da88fc2, 0xd5a79147, 0x930aa725, + 0x06ca6351, 0xe003826f, 0x14292967, 0x0a0e6e70, + 0x27b70a85, 0x46d22ffc, 0x2e1b2138, 0x5c26c926, + 0x4d2c6dfc, 0x5ac42aed, 0x53380d13, 0x9d95b3df, + 0x650a7354, 0x8baf63de, 0x766a0abb, 0x3c77b2a8, + 0x81c2c92e, 0x47edaee6, 0x92722c85, 0x1482353b, + 0xa2bfe8a1, 0x4cf10364, 0xa81a664b, 0xbc423001, + 0xc24b8b70, 0xd0f89791, 0xc76c51a3, 0x0654be30, + 0xd192e819, 0xd6ef5218, 0xd6990624, 0x5565a910, + 0xf40e3585, 0x5771202a, 0x106aa070, 0x32bbd1b8, + 0x19a4c116, 0xb8d2d0c8, 0x1e376c08, 0x5141ab53, + 0x2748774c, 0xdf8eeb99, 0x34b0bcb5, 0xe19b48a8, + 0x391c0cb3, 0xc5c95a63, 0x4ed8aa4a, 0xe3418acb, + 0x5b9cca4f, 0x7763e373, 0x682e6ff3, 0xd6b2b8a3, + 0x748f82ee, 0x5defb2fc, 0x78a5636f, 0x43172f60, + 0x84c87814, 0xa1f0ab72, 0x8cc70208, 0x1a6439ec, + 0x90befffa, 0x23631e28, 0xa4506ceb, 0xde82bde9, + 0xbef9a3f7, 0xb2c67915, 0xc67178f2, 0xe372532b, + 0xca273ece, 0xea26619c, 0xd186b8c7, 0x21c0c207, + 0xeada7dd6, 0xcde0eb1e, 0xf57d4f7f, 0xee6ed178, + 0x06f067aa, 0x72176fba, 0x0a637dc5, 0xa2c898a6, + 0x113f9804, 0xbef90dae, 0x1b710b35, 0x131c471b, + 0x28db77f5, 0x23047d84, 0x32caab7b, 0x40c72493, + 0x3c9ebe0a, 0x15c9bebc, 0x431d67c4, 0x9c100d4c, + 0x4cc5d4be, 0xcb3e42b6, 0x597f299c, 0xfc657e2a, + 0x5fcb6fab, 0x3ad6faec, 0x6c44198c, 0x4a475817 +]; - if (stackCopy.length === 0) { - this.errstr = 'SCRIPT_ERR_EVAL_FALSE_NO_P2SH_STACK'; - return false; - } +function SHA512() { + if (!(this instanceof SHA512)) + return new SHA512(); - if (!Interpreter.castToBool(stackCopy[stackCopy.length - 1])) { - this.errstr = 'SCRIPT_ERR_EVAL_FALSE_IN_P2SH_STACK'; - return false; - } - if ((flags & Interpreter.SCRIPT_VERIFY_WITNESS)) { - var p2shWitnessValues = {}; - if (redeemScript.isWitnessProgram(p2shWitnessValues)) { - hadWitness = true; - var redeemScriptPush = new Script(); - redeemScriptPush.add(redeemScript.toBuffer()); - if (scriptSig.toHex() !== redeemScriptPush.toHex()) { - this.errstr = 'SCRIPT_ERR_WITNESS_MALLEATED_P2SH'; - return false; - } + BlockHash.call(this); + this.h = [ + 0x6a09e667, 0xf3bcc908, + 0xbb67ae85, 0x84caa73b, + 0x3c6ef372, 0xfe94f82b, + 0xa54ff53a, 0x5f1d36f1, + 0x510e527f, 0xade682d1, + 0x9b05688c, 0x2b3e6c1f, + 0x1f83d9ab, 0xfb41bd6b, + 0x5be0cd19, 0x137e2179 ]; + this.k = sha512_K; + this.W = new Array(160); +} +utils.inherits(SHA512, BlockHash); +module.exports = SHA512; - if (!this.verifyWitnessProgram(p2shWitnessValues.version, p2shWitnessValues.program, witness, satoshis, this.flags)) { - return false; - } - // Bypass the cleanstack check at the end. The actual stack is obviously not clean - // for witness programs. - stack = [stack[0]]; - } - } - } +SHA512.blockSize = 1024; +SHA512.outSize = 512; +SHA512.hmacStrength = 192; +SHA512.padLength = 128; - // The CLEANSTACK check is only performed after potential P2SH evaluation, - // as the non-P2SH evaluation of a P2SH script will obviously not result in - // a clean stack (the P2SH inputs remain). The same holds for witness - // evaluation. - if ((this.flags & Interpreter.SCRIPT_VERIFY_CLEANSTACK) != 0) { - // Disallow CLEANSTACK without P2SH, as otherwise a switch - // CLEANSTACK->P2SH+CLEANSTACK would be possible, which is not a - // softfork (and P2SH should be one). - if ((this.flags & Interpreter.SCRIPT_VERIFY_P2SH) == 0) - throw 'flags & SCRIPT_VERIFY_P2SH'; +SHA512.prototype._prepareBlock = function _prepareBlock(msg, start) { + var W = this.W; - if (stackCopy.length != 1) { - this.errstr = 'SCRIPT_ERR_CLEANSTACK'; - return false; - } - } + // 32 x 32bit words + for (var i = 0; i < 32; i++) + W[i] = msg[start + i]; + for (; i < W.length; i += 2) { + var c0_hi = g1_512_hi(W[i - 4], W[i - 3]); // i - 2 + var c0_lo = g1_512_lo(W[i - 4], W[i - 3]); + var c1_hi = W[i - 14]; // i - 7 + var c1_lo = W[i - 13]; + var c2_hi = g0_512_hi(W[i - 30], W[i - 29]); // i - 15 + var c2_lo = g0_512_lo(W[i - 30], W[i - 29]); + var c3_hi = W[i - 32]; // i - 16 + var c3_lo = W[i - 31]; - if ((this.flags & Interpreter.SCRIPT_VERIFY_WITNESS)) { - if (!hadWitness && witness.length > 0) { - this.errstr = 'SCRIPT_ERR_WITNESS_UNEXPECTED'; - return false; - } + W[i] = sum64_4_hi( + c0_hi, c0_lo, + c1_hi, c1_lo, + c2_hi, c2_lo, + c3_hi, c3_lo); + W[i + 1] = sum64_4_lo( + c0_hi, c0_lo, + c1_hi, c1_lo, + c2_hi, c2_lo, + c3_hi, c3_lo); } - - return true; }; -module.exports = Interpreter; +SHA512.prototype._update = function _update(msg, start) { + this._prepareBlock(msg, start); -Interpreter.prototype.initialize = function(obj) { - this.stack = []; - this.altstack = []; - this.pc = 0; - this.satoshis = 0; - this.sigversion = 0; - this.pbegincodehash = 0; - this.nOpCount = 0; - this.vfExec = []; - this.errstr = ''; - this.flags = 0; -}; + var W = this.W; -Interpreter.prototype.set = function(obj) { - this.script = obj.script || this.script; - this.tx = obj.tx || this.tx; - this.nin = typeof obj.nin !== 'undefined' ? obj.nin : this.nin; - this.stack = obj.stack || this.stack; - this.altstack = obj.altack || this.altstack; - this.pc = typeof obj.pc !== 'undefined' ? obj.pc : this.pc; - this.pbegincodehash = typeof obj.pbegincodehash !== 'undefined' ? obj.pbegincodehash : this.pbegincodehash; - this.sigversion = typeof obj.sigversion !== 'undefined' ? obj.sigversion : this.sigversion; - this.satoshis = typeof obj.satoshis !== 'undefined' ? obj.satoshis : this.satoshis; - this.nOpCount = typeof obj.nOpCount !== 'undefined' ? obj.nOpCount : this.nOpCount; - this.vfExec = obj.vfExec || this.vfExec; - this.errstr = obj.errstr || this.errstr; - this.flags = typeof obj.flags !== 'undefined' ? obj.flags : this.flags; -}; + var ah = this.h[0]; + var al = this.h[1]; + var bh = this.h[2]; + var bl = this.h[3]; + var ch = this.h[4]; + var cl = this.h[5]; + var dh = this.h[6]; + var dl = this.h[7]; + var eh = this.h[8]; + var el = this.h[9]; + var fh = this.h[10]; + var fl = this.h[11]; + var gh = this.h[12]; + var gl = this.h[13]; + var hh = this.h[14]; + var hl = this.h[15]; -Interpreter.true = Buffer.from([1]); -Interpreter.false = Buffer.from([]); + assert(this.k.length === W.length); + for (var i = 0; i < W.length; i += 2) { + var c0_hi = hh; + var c0_lo = hl; + var c1_hi = s1_512_hi(eh, el); + var c1_lo = s1_512_lo(eh, el); + var c2_hi = ch64_hi(eh, el, fh, fl, gh, gl); + var c2_lo = ch64_lo(eh, el, fh, fl, gh, gl); + var c3_hi = this.k[i]; + var c3_lo = this.k[i + 1]; + var c4_hi = W[i]; + var c4_lo = W[i + 1]; + + var T1_hi = sum64_5_hi( + c0_hi, c0_lo, + c1_hi, c1_lo, + c2_hi, c2_lo, + c3_hi, c3_lo, + c4_hi, c4_lo); + var T1_lo = sum64_5_lo( + c0_hi, c0_lo, + c1_hi, c1_lo, + c2_hi, c2_lo, + c3_hi, c3_lo, + c4_hi, c4_lo); + + c0_hi = s0_512_hi(ah, al); + c0_lo = s0_512_lo(ah, al); + c1_hi = maj64_hi(ah, al, bh, bl, ch, cl); + c1_lo = maj64_lo(ah, al, bh, bl, ch, cl); -Interpreter.MAX_SCRIPT_ELEMENT_SIZE = 520; + var T2_hi = sum64_hi(c0_hi, c0_lo, c1_hi, c1_lo); + var T2_lo = sum64_lo(c0_hi, c0_lo, c1_hi, c1_lo); -Interpreter.LOCKTIME_THRESHOLD = 500000000; -Interpreter.LOCKTIME_THRESHOLD_BN = new BN(Interpreter.LOCKTIME_THRESHOLD); + hh = gh; + hl = gl; -// flags taken from bitcoind -// bitcoind commit: b5d1b1092998bc95313856d535c632ea5a8f9104 -Interpreter.SCRIPT_VERIFY_NONE = 0; + gh = fh; + gl = fl; -// Making v1-v16 witness program non-standard -Interpreter.SCRIPT_VERIFY_DISCOURAGE_UPGRADABLE_WITNESS_PROGRAM = (1 << 12); + fh = eh; + fl = el; -// Evaluate P2SH subscripts (softfork safe, BIP16). -Interpreter.SCRIPT_VERIFY_P2SH = (1 << 0); + eh = sum64_hi(dh, dl, T1_hi, T1_lo); + el = sum64_lo(dl, dl, T1_hi, T1_lo); -// Passing a non-strict-DER signature or one with undefined hashtype to a checksig operation causes script failure. -// Passing a pubkey that is not (0x04 + 64 bytes) or (0x02 or 0x03 + 32 bytes) to checksig causes that pubkey to be -// skipped (not softfork safe: this flag can widen the validity of OP_CHECKSIG OP_NOT). -Interpreter.SCRIPT_VERIFY_STRICTENC = (1 << 1); + dh = ch; + dl = cl; -// Passing a non-strict-DER signature to a checksig operation causes script failure (softfork safe, BIP62 rule 1) -Interpreter.SCRIPT_VERIFY_DERSIG = (1 << 2); + ch = bh; + cl = bl; -// Passing a non-strict-DER signature or one with S > order/2 to a checksig operation causes script failure -// (softfork safe, BIP62 rule 5). -Interpreter.SCRIPT_VERIFY_LOW_S = (1 << 3); + bh = ah; + bl = al; -// verify dummy stack item consumed by CHECKMULTISIG is of zero-length (softfork safe, BIP62 rule 7). -Interpreter.SCRIPT_VERIFY_NULLDUMMY = (1 << 4); + ah = sum64_hi(T1_hi, T1_lo, T2_hi, T2_lo); + al = sum64_lo(T1_hi, T1_lo, T2_hi, T2_lo); + } -// Using a non-push operator in the scriptSig causes script failure (softfork safe, BIP62 rule 2). -Interpreter.SCRIPT_VERIFY_SIGPUSHONLY = (1 << 5); + sum64(this.h, 0, ah, al); + sum64(this.h, 2, bh, bl); + sum64(this.h, 4, ch, cl); + sum64(this.h, 6, dh, dl); + sum64(this.h, 8, eh, el); + sum64(this.h, 10, fh, fl); + sum64(this.h, 12, gh, gl); + sum64(this.h, 14, hh, hl); +}; -// Require minimal encodings for all push operations (OP_0... OP_16, OP_1NEGATE where possible, direct -// pushes up to 75 bytes, OP_PUSHDATA up to 255 bytes, OP_PUSHDATA2 for anything larger). Evaluating -// any other push causes the script to fail (BIP62 rule 3). -// In addition, whenever a stack element is interpreted as a number, it must be of minimal length (BIP62 rule 4). -// (softfork safe) -Interpreter.SCRIPT_VERIFY_MINIMALDATA = (1 << 6); +SHA512.prototype._digest = function digest(enc) { + if (enc === 'hex') + return utils.toHex32(this.h, 'big'); + else + return utils.split32(this.h, 'big'); +}; -// Discourage use of NOPs reserved for upgrades (NOP1-10) -// -// Provided so that nodes can avoid accepting or mining transactions -// containing executed NOP's whose meaning may change after a soft-fork, -// thus rendering the script invalid; with this flag set executing -// discouraged NOPs fails the script. This verification flag will never be -// a mandatory flag applied to scripts in a block. NOPs that are not -// executed, e.g. within an unexecuted IF ENDIF block, are *not* rejected. -Interpreter.SCRIPT_VERIFY_DISCOURAGE_UPGRADABLE_NOPS = (1 << 7); +function ch64_hi(xh, xl, yh, yl, zh) { + var r = (xh & yh) ^ ((~xh) & zh); + if (r < 0) + r += 0x100000000; + return r; +} +function ch64_lo(xh, xl, yh, yl, zh, zl) { + var r = (xl & yl) ^ ((~xl) & zl); + if (r < 0) + r += 0x100000000; + return r; +} -// Require that only a single stack element remains after evaluation. This -// changes the success criterion from "At least one stack element must -// remain, and when interpreted as a boolean, it must be true" to "Exactly -// one stack element must remain, and when interpreted as a boolean, it must -// be true". -// (softfork safe, BIP62 rule 6) -// Note: CLEANSTACK should never be used without P2SH or WITNESS. -Interpreter.SCRIPT_VERIFY_CLEANSTACK = (1 << 8), +function maj64_hi(xh, xl, yh, yl, zh) { + var r = (xh & yh) ^ (xh & zh) ^ (yh & zh); + if (r < 0) + r += 0x100000000; + return r; +} -// CLTV See BIP65 for details. -Interpreter.SCRIPT_VERIFY_CHECKLOCKTIMEVERIFY = (1 << 9); -Interpreter.SCRIPT_VERIFY_WITNESS = (1 << 10); -Interpreter.SCRIPT_VERIFY_DISCOURAGE_UPGRADABLE_NOPS = (1 << 11); +function maj64_lo(xh, xl, yh, yl, zh, zl) { + var r = (xl & yl) ^ (xl & zl) ^ (yl & zl); + if (r < 0) + r += 0x100000000; + return r; +} -// support CHECKSEQUENCEVERIFY opcode -// -// See BIP112 for details -Interpreter.SCRIPT_VERIFY_CHECKSEQUENCEVERIFY = (1 << 10); +function s0_512_hi(xh, xl) { + var c0_hi = rotr64_hi(xh, xl, 28); + var c1_hi = rotr64_hi(xl, xh, 2); // 34 + var c2_hi = rotr64_hi(xl, xh, 7); // 39 -// -// Segwit script only: Require the argument of OP_IF/NOTIF to be exactly -// 0x01 or empty vector -// -Interpreter.SCRIPT_VERIFY_MINIMALIF = (1 << 13); + var r = c0_hi ^ c1_hi ^ c2_hi; + if (r < 0) + r += 0x100000000; + return r; +} +function s0_512_lo(xh, xl) { + var c0_lo = rotr64_lo(xh, xl, 28); + var c1_lo = rotr64_lo(xl, xh, 2); // 34 + var c2_lo = rotr64_lo(xl, xh, 7); // 39 -// Signature(s) must be empty vector if an CHECK(MULTI)SIG operation failed -// -Interpreter.SCRIPT_VERIFY_NULLFAIL = (1 << 14); + var r = c0_lo ^ c1_lo ^ c2_lo; + if (r < 0) + r += 0x100000000; + return r; +} -// Public keys in scripts must be compressed -// -Interpreter.SCRIPT_VERIFY_WITNESS_PUBKEYTYPE = (1 << 15); +function s1_512_hi(xh, xl) { + var c0_hi = rotr64_hi(xh, xl, 14); + var c1_hi = rotr64_hi(xh, xl, 18); + var c2_hi = rotr64_hi(xl, xh, 9); // 41 -// Do we accept signature using SIGHASH_FORKID -// -Interpreter.SCRIPT_ENABLE_SIGHASH_FORKID = (1 << 16); + var r = c0_hi ^ c1_hi ^ c2_hi; + if (r < 0) + r += 0x100000000; + return r; +} -// Do we accept activate replay protection using a different fork id. -// -Interpreter.SCRIPT_ENABLE_REPLAY_PROTECTION = (1 << 17); +function s1_512_lo(xh, xl) { + var c0_lo = rotr64_lo(xh, xl, 14); + var c1_lo = rotr64_lo(xh, xl, 18); + var c2_lo = rotr64_lo(xl, xh, 9); // 41 -// Enable new opcodes. -// -Interpreter.SCRIPT_ENABLE_MONOLITH_OPCODES = (1 << 18); + var r = c0_lo ^ c1_lo ^ c2_lo; + if (r < 0) + r += 0x100000000; + return r; +} +function g0_512_hi(xh, xl) { + var c0_hi = rotr64_hi(xh, xl, 1); + var c1_hi = rotr64_hi(xh, xl, 8); + var c2_hi = shr64_hi(xh, xl, 7); + var r = c0_hi ^ c1_hi ^ c2_hi; + if (r < 0) + r += 0x100000000; + return r; +} -/* Below flags apply in the context of BIP 68*/ -/** - * If this flag set, CTxIn::nSequence is NOT interpreted as a relative - * lock-time. - */ -Interpreter.SEQUENCE_LOCKTIME_DISABLE_FLAG = (1 << 31); +function g0_512_lo(xh, xl) { + var c0_lo = rotr64_lo(xh, xl, 1); + var c1_lo = rotr64_lo(xh, xl, 8); + var c2_lo = shr64_lo(xh, xl, 7); -/** - * If CTxIn::nSequence encodes a relative lock-time and this flag is set, - * the relative lock-time has units of 512 seconds, otherwise it specifies - * blocks with a granularity of 1. - */ -Interpreter.SEQUENCE_LOCKTIME_TYPE_FLAG = (1 << 22); + var r = c0_lo ^ c1_lo ^ c2_lo; + if (r < 0) + r += 0x100000000; + return r; +} -/** - * If CTxIn::nSequence encodes a relative lock-time, this mask is applied to - * extract that lock-time from the sequence field. - */ -Interpreter.SEQUENCE_LOCKTIME_MASK = 0x0000ffff; +function g1_512_hi(xh, xl) { + var c0_hi = rotr64_hi(xh, xl, 19); + var c1_hi = rotr64_hi(xl, xh, 29); // 61 + var c2_hi = shr64_hi(xh, xl, 6); + var r = c0_hi ^ c1_hi ^ c2_hi; + if (r < 0) + r += 0x100000000; + return r; +} -Interpreter.castToBool = function(buf) { - for (var i = 0; i < buf.length; i++) { - if (buf[i] !== 0) { - // can be negative zero - if (i === buf.length - 1 && buf[i] === 0x80) { - return false; - } - return true; - } - } - return false; -}; +function g1_512_lo(xh, xl) { + var c0_lo = rotr64_lo(xh, xl, 19); + var c1_lo = rotr64_lo(xl, xh, 29); // 61 + var c2_lo = shr64_lo(xh, xl, 6); -/** - * Translated from bitcoind's CheckSignatureEncoding - */ -Interpreter.prototype.checkSignatureEncoding = function(buf) { - var sig; + var r = c0_lo ^ c1_lo ^ c2_lo; + if (r < 0) + r += 0x100000000; + return r; +} - // Empty signature. Not strictly DER encoded, but allowed to provide a - // compact way to provide an invalid signature for use with CHECK(MULTI)SIG - if (buf.length == 0) { - return true; - } +},{"../common":139,"../utils":149,"minimalistic-assert":159}],148:[function(require,module,exports){ +'use strict'; - if ((this.flags & (Interpreter.SCRIPT_VERIFY_DERSIG | Interpreter.SCRIPT_VERIFY_LOW_S | Interpreter.SCRIPT_VERIFY_STRICTENC)) !== 0 && !Signature.isTxDER(buf)) { - this.errstr = 'SCRIPT_ERR_SIG_DER_INVALID_FORMAT'; - return false; - } else if ((this.flags & Interpreter.SCRIPT_VERIFY_LOW_S) !== 0) { - sig = Signature.fromTxFormat(buf); - if (!sig.hasLowS()) { - this.errstr = 'SCRIPT_ERR_SIG_DER_HIGH_S'; - return false; - } - } else if ((this.flags & Interpreter.SCRIPT_VERIFY_STRICTENC) !== 0) { - sig = Signature.fromTxFormat(buf); - if (!sig.hasDefinedHashtype()) { - this.errstr = 'SCRIPT_ERR_SIG_HASHTYPE'; - return false; - } - } +var utils = require('../utils'); +var rotr32 = utils.rotr32; - return true; -}; +function ft_1(s, x, y, z) { + if (s === 0) + return ch32(x, y, z); + if (s === 1 || s === 3) + return p32(x, y, z); + if (s === 2) + return maj32(x, y, z); +} +exports.ft_1 = ft_1; -/** - * Translated from bitcoind's CheckPubKeyEncoding - */ -Interpreter.prototype.checkPubkeyEncoding = function(buf) { - if ((this.flags & Interpreter.SCRIPT_VERIFY_STRICTENC) !== 0 && !PublicKey.isValid(buf)) { - this.errstr = 'SCRIPT_ERR_PUBKEYTYPE'; - return false; - } +function ch32(x, y, z) { + return (x & y) ^ ((~x) & z); +} +exports.ch32 = ch32; - // Only compressed keys are accepted in segwit - if ((this.flags & Interpreter.SCRIPT_VERIFY_WITNESS_PUBKEYTYPE) != 0 && this.sigversion == 1 && !PublicKey.fromBuffer(buf).compressed) { - this.errstr = 'SCRIPT_ERR_WITNESS_PUBKEYTYPE'; - return false; - } +function maj32(x, y, z) { + return (x & y) ^ (x & z) ^ (y & z); +} +exports.maj32 = maj32; - return true; -}; +function p32(x, y, z) { + return x ^ y ^ z; +} +exports.p32 = p32; -/** - * Based on bitcoind's EvalScript function, with the inner loop moved to - * Interpreter.prototype.step() - * bitcoind commit: b5d1b1092998bc95313856d535c632ea5a8f9104 - */ -Interpreter.prototype.evaluate = function() { - if (this.script.toBuffer().length > 10000) { - this.errstr = 'SCRIPT_ERR_SCRIPT_SIZE'; - return false; - } +function s0_256(x) { + return rotr32(x, 2) ^ rotr32(x, 13) ^ rotr32(x, 22); +} +exports.s0_256 = s0_256; - try { - while (this.pc < this.script.chunks.length) { - var fSuccess = this.step(); - if (!fSuccess) { - return false; - } - } +function s1_256(x) { + return rotr32(x, 6) ^ rotr32(x, 11) ^ rotr32(x, 25); +} +exports.s1_256 = s1_256; - // Size limits - if (this.stack.length + this.altstack.length > 1000) { - this.errstr = 'SCRIPT_ERR_STACK_SIZE'; - return false; - } - } catch (e) { - this.errstr = 'SCRIPT_ERR_UNKNOWN_ERROR: ' + e; - return false; - } +function g0_256(x) { + return rotr32(x, 7) ^ rotr32(x, 18) ^ (x >>> 3); +} +exports.g0_256 = g0_256; - if (this.vfExec.length > 0) { - this.errstr = 'SCRIPT_ERR_UNBALANCED_CONDITIONAL'; - return false; - } +function g1_256(x) { + return rotr32(x, 17) ^ rotr32(x, 19) ^ (x >>> 10); +} +exports.g1_256 = g1_256; - return true; -}; +},{"../utils":149}],149:[function(require,module,exports){ +'use strict'; -/** - * Checks a locktime parameter with the transaction's locktime. - * There are two times of nLockTime: lock-by-blockheight and lock-by-blocktime, - * distinguished by whether nLockTime < LOCKTIME_THRESHOLD = 500000000 - * - * See the corresponding code on bitcoin core: - * https://github.com/bitcoin/bitcoin/blob/ffd75adce01a78b3461b3ff05bcc2b530a9ce994/src/script/interpreter.cpp#L1129 - * - * @param {BN} nLockTime the locktime read from the script - * @return {boolean} true if the transaction's locktime is less than or equal to - * the transaction's locktime - */ -Interpreter.prototype.checkLockTime = function(nLockTime) { +var assert = require('minimalistic-assert'); +var inherits = require('inherits'); - // We want to compare apples to apples, so fail the script - // unless the type of nLockTime being tested is the same as - // the nLockTime in the transaction. - if (!( - (this.tx.nLockTime < Interpreter.LOCKTIME_THRESHOLD && nLockTime.lt(Interpreter.LOCKTIME_THRESHOLD_BN)) || - (this.tx.nLockTime >= Interpreter.LOCKTIME_THRESHOLD && nLockTime.gte(Interpreter.LOCKTIME_THRESHOLD_BN)) - )) { - return false; - } +exports.inherits = inherits; - // Now that we know we're comparing apples-to-apples, the - // comparison is a simple numeric one. - if (nLockTime.gt(new BN(this.tx.nLockTime))) { +function isSurrogatePair(msg, i) { + if ((msg.charCodeAt(i) & 0xFC00) !== 0xD800) { return false; } - - // Finally the nLockTime feature can be disabled and thus - // CHECKLOCKTIMEVERIFY bypassed if every txin has been - // finalized by setting nSequence to maxint. The - // transaction would be allowed into the blockchain, making - // the opcode ineffective. - // - // Testing if this vin is not final is sufficient to - // prevent this condition. Alternatively we could test all - // inputs, but testing just this input minimizes the data - // required to prove correct CHECKLOCKTIMEVERIFY execution. - if (!this.tx.inputs[this.nin].isFinal()) { + if (i < 0 || i + 1 >= msg.length) { return false; } - - return true; + return (msg.charCodeAt(i + 1) & 0xFC00) === 0xDC00; } - -/** - * Checks a sequence parameter with the transaction's sequence. - * @param {BN} nSequence the sequence read from the script - * @return {boolean} true if the transaction's sequence is less than or equal to - * the transaction's sequence - */ -Interpreter.prototype.checkSequence = function(nSequence) { - - // Relative lock times are supported by comparing the passed in operand to - // the sequence number of the input. - var txToSequence = this.tx.inputs[this.nin].sequenceNumber; - - // Fail if the transaction's version number is not set high enough to - // trigger BIP 68 rules. - if (this.tx.version < 2) { - return false; - } - - // Sequence numbers with their most significant bit set are not consensus - // constrained. Testing that the transaction's sequence number do not have - // this bit set prevents using this property to get around a - // CHECKSEQUENCEVERIFY check. - if (txToSequence & SEQUENCE_LOCKTIME_DISABLE_FLAG) { - return false; +function toArray(msg, enc) { + if (Array.isArray(msg)) + return msg.slice(); + if (!msg) + return []; + var res = []; + if (typeof msg === 'string') { + if (!enc) { + // Inspired by stringToUtf8ByteArray() in closure-library by Google + // https://github.com/google/closure-library/blob/8598d87242af59aac233270742c8984e2b2bdbe0/closure/goog/crypt/crypt.js#L117-L143 + // Apache License 2.0 + // https://github.com/google/closure-library/blob/master/LICENSE + var p = 0; + for (var i = 0; i < msg.length; i++) { + var c = msg.charCodeAt(i); + if (c < 128) { + res[p++] = c; + } else if (c < 2048) { + res[p++] = (c >> 6) | 192; + res[p++] = (c & 63) | 128; + } else if (isSurrogatePair(msg, i)) { + c = 0x10000 + ((c & 0x03FF) << 10) + (msg.charCodeAt(++i) & 0x03FF); + res[p++] = (c >> 18) | 240; + res[p++] = ((c >> 12) & 63) | 128; + res[p++] = ((c >> 6) & 63) | 128; + res[p++] = (c & 63) | 128; + } else { + res[p++] = (c >> 12) | 224; + res[p++] = ((c >> 6) & 63) | 128; + res[p++] = (c & 63) | 128; + } + } + } else if (enc === 'hex') { + msg = msg.replace(/[^a-z0-9]+/ig, ''); + if (msg.length % 2 !== 0) + msg = '0' + msg; + for (i = 0; i < msg.length; i += 2) + res.push(parseInt(msg[i] + msg[i + 1], 16)); } + } else { + for (i = 0; i < msg.length; i++) + res[i] = msg[i] | 0; + } + return res; +} +exports.toArray = toArray; - // Mask off any bits that do not have consensus-enforced meaning before - // doing the integer comparisons - var nLockTimeMask = - Interpreter.SEQUENCE_LOCKTIME_TYPE_FLAG | Interpreter.SEQUENCE_LOCKTIME_MASK; - var txToSequenceMasked = new BN(txToSequence & nLockTimeMask); - var nSequenceMasked = nSequence.and(nLockTimeMask); +function toHex(msg) { + var res = ''; + for (var i = 0; i < msg.length; i++) + res += zero2(msg[i].toString(16)); + return res; +} +exports.toHex = toHex; - // There are two kinds of nSequence: lock-by-blockheight and - // lock-by-blocktime, distinguished by whether nSequenceMasked < - // CTxIn::SEQUENCE_LOCKTIME_TYPE_FLAG. - // - // We want to compare apples to apples, so fail the script unless the type - // of nSequenceMasked being tested is the same as the nSequenceMasked in the - // transaction. - var SEQUENCE_LOCKTIME_TYPE_FLAG_BN = new BN(Interpreter.SEQUENCE_LOCKTIME_TYPE_FLAG); - - if (!((txToSequenceMasked.lt(SEQUENCE_LOCKTIME_TYPE_FLAG_BN) && - nSequenceMasked.lt(SEQUENCE_LOCKTIME_TYPE_FLAG_BN)) || - (txToSequenceMasked.gte(SEQUENCE_LOCKTIME_TYPE_FLAG_BN) && - nSequenceMasked.gte(SEQUENCE_LOCKTIME_TYPE_FLAG_BN)))) { - return false; - } +function htonl(w) { + var res = (w >>> 24) | + ((w >>> 8) & 0xff00) | + ((w << 8) & 0xff0000) | + ((w & 0xff) << 24); + return res >>> 0; +} +exports.htonl = htonl; - // Now that we know we're comparing apples-to-apples, the comparison is a - // simple numeric one. - if (nSequenceMasked.gt(txToSequenceMasked)) { - return false; - } - return true; +function toHex32(msg, endian) { + var res = ''; + for (var i = 0; i < msg.length; i++) { + var w = msg[i]; + if (endian === 'little') + w = htonl(w); + res += zero8(w.toString(16)); } + return res; +} +exports.toHex32 = toHex32; -/** - * Based on the inner loop of bitcoind's EvalScript function - * bitcoind commit: b5d1b1092998bc95313856d535c632ea5a8f9104 - */ -Interpreter.prototype.step = function() { - var fRequireMinimal = (this.flags & Interpreter.SCRIPT_VERIFY_MINIMALDATA) !== 0; +function zero2(word) { + if (word.length === 1) + return '0' + word; + else + return word; +} +exports.zero2 = zero2; - //bool fExec = !count(vfExec.begin(), vfExec.end(), false); - var fExec = (this.vfExec.indexOf(false) === -1); - var buf, buf1, buf2, spliced, n, x1, x2, bn, bn1, bn2, bufSig, bufPubkey, subscript; - var sig, pubkey; - var fValue, fSuccess; +function zero8(word) { + if (word.length === 7) + return '0' + word; + else if (word.length === 6) + return '00' + word; + else if (word.length === 5) + return '000' + word; + else if (word.length === 4) + return '0000' + word; + else if (word.length === 3) + return '00000' + word; + else if (word.length === 2) + return '000000' + word; + else if (word.length === 1) + return '0000000' + word; + else + return word; +} +exports.zero8 = zero8; - // Read instruction - var chunk = this.script.chunks[this.pc]; - this.pc++; - var opcodenum = chunk.opcodenum; - if (_.isUndefined(opcodenum)) { - this.errstr = 'SCRIPT_ERR_UNDEFINED_OPCODE'; - return false; - } - if (chunk.buf && chunk.buf.length > Interpreter.MAX_SCRIPT_ELEMENT_SIZE) { - this.errstr = 'SCRIPT_ERR_PUSH_SIZE'; - return false; +function join32(msg, start, end, endian) { + var len = end - start; + assert(len % 4 === 0); + var res = new Array(len / 4); + for (var i = 0, k = start; i < res.length; i++, k += 4) { + var w; + if (endian === 'big') + w = (msg[k] << 24) | (msg[k + 1] << 16) | (msg[k + 2] << 8) | msg[k + 3]; + else + w = (msg[k + 3] << 24) | (msg[k + 2] << 16) | (msg[k + 1] << 8) | msg[k]; + res[i] = w >>> 0; } + return res; +} +exports.join32 = join32; - // Note how Opcode.OP_RESERVED does not count towards the opcode limit. - if (opcodenum > Opcode.OP_16 && ++(this.nOpCount) > 201) { - this.errstr = 'SCRIPT_ERR_OP_COUNT'; - return false; +function split32(msg, endian) { + var res = new Array(msg.length * 4); + for (var i = 0, k = 0; i < msg.length; i++, k += 4) { + var m = msg[i]; + if (endian === 'big') { + res[k] = m >>> 24; + res[k + 1] = (m >>> 16) & 0xff; + res[k + 2] = (m >>> 8) & 0xff; + res[k + 3] = m & 0xff; + } else { + res[k + 3] = m >>> 24; + res[k + 2] = (m >>> 16) & 0xff; + res[k + 1] = (m >>> 8) & 0xff; + res[k] = m & 0xff; + } } + return res; +} +exports.split32 = split32; +function rotr32(w, b) { + return (w >>> b) | (w << (32 - b)); +} +exports.rotr32 = rotr32; - if (opcodenum === Opcode.OP_CAT || - opcodenum === Opcode.OP_SUBSTR || - opcodenum === Opcode.OP_LEFT || - opcodenum === Opcode.OP_RIGHT || - opcodenum === Opcode.OP_INVERT || - opcodenum === Opcode.OP_AND || - opcodenum === Opcode.OP_OR || - opcodenum === Opcode.OP_XOR || - opcodenum === Opcode.OP_2MUL || - opcodenum === Opcode.OP_2DIV || - opcodenum === Opcode.OP_MUL || - opcodenum === Opcode.OP_DIV || - opcodenum === Opcode.OP_MOD || - opcodenum === Opcode.OP_LSHIFT || - opcodenum === Opcode.OP_RSHIFT) { - this.errstr = 'SCRIPT_ERR_DISABLED_OPCODE'; - return false; - } +function rotl32(w, b) { + return (w << b) | (w >>> (32 - b)); +} +exports.rotl32 = rotl32; - if (fExec && 0 <= opcodenum && opcodenum <= Opcode.OP_PUSHDATA4) { - if (fRequireMinimal && !this.script.checkMinimalPush(this.pc - 1)) { - this.errstr = 'SCRIPT_ERR_MINIMALDATA'; - return false; - } - if (!chunk.buf) { - this.stack.push(Interpreter.false); - } else if (chunk.len !== chunk.buf.length) { - throw new Error('Length of push value not equal to length of data'); - } else { - this.stack.push(chunk.buf); - } - } else if (fExec || (Opcode.OP_IF <= opcodenum && opcodenum <= Opcode.OP_ENDIF)) { - switch (opcodenum) { - // Push value - case Opcode.OP_1NEGATE: - case Opcode.OP_1: - case Opcode.OP_2: - case Opcode.OP_3: - case Opcode.OP_4: - case Opcode.OP_5: - case Opcode.OP_6: - case Opcode.OP_7: - case Opcode.OP_8: - case Opcode.OP_9: - case Opcode.OP_10: - case Opcode.OP_11: - case Opcode.OP_12: - case Opcode.OP_13: - case Opcode.OP_14: - case Opcode.OP_15: - case Opcode.OP_16: - { - // ( -- value) - // ScriptNum bn((int)opcode - (int)(Opcode.OP_1 - 1)); - n = opcodenum - (Opcode.OP_1 - 1); - buf = new BN(n).toScriptNumBuffer(); - this.stack.push(buf); - // The result of these opcodes should always be the minimal way to push the data - // they push, so no need for a CheckMinimalPush here. - } - break; +function sum32(a, b) { + return (a + b) >>> 0; +} +exports.sum32 = sum32; +function sum32_3(a, b, c) { + return (a + b + c) >>> 0; +} +exports.sum32_3 = sum32_3; - // - // Control - // - case Opcode.OP_NOP: - break; +function sum32_4(a, b, c, d) { + return (a + b + c + d) >>> 0; +} +exports.sum32_4 = sum32_4; - case Opcode.OP_NOP2: - case Opcode.OP_CHECKLOCKTIMEVERIFY: +function sum32_5(a, b, c, d, e) { + return (a + b + c + d + e) >>> 0; +} +exports.sum32_5 = sum32_5; - if (!(this.flags & Interpreter.SCRIPT_VERIFY_CHECKLOCKTIMEVERIFY)) { - // not enabled; treat as a NOP2 - if (this.flags & Interpreter.SCRIPT_VERIFY_DISCOURAGE_UPGRADABLE_NOPS) { - this.errstr = 'SCRIPT_ERR_DISCOURAGE_UPGRADABLE_NOPS'; - return false; - } - break; - } +function sum64(buf, pos, ah, al) { + var bh = buf[pos]; + var bl = buf[pos + 1]; - if (this.stack.length < 1) { - this.errstr = 'SCRIPT_ERR_INVALID_STACK_OPERATION'; - return false; - } + var lo = (al + bl) >>> 0; + var hi = (lo < al ? 1 : 0) + ah + bh; + buf[pos] = hi >>> 0; + buf[pos + 1] = lo; +} +exports.sum64 = sum64; - // Note that elsewhere numeric opcodes are limited to - // operands in the range -2**31+1 to 2**31-1, however it is - // legal for opcodes to produce results exceeding that - // range. This limitation is implemented by CScriptNum's - // default 4-byte limit. - // - // If we kept to that limit we'd have a year 2038 problem, - // even though the nLockTime field in transactions - // themselves is uint32 which only becomes meaningless - // after the year 2106. - // - // Thus as a special case we tell CScriptNum to accept up - // to 5-byte bignums, which are good until 2**39-1, well - // beyond the 2**32-1 limit of the nLockTime field itself. - var nLockTime = BN.fromScriptNumBuffer(this.stack[this.stack.length - 1], fRequireMinimal, 5); +function sum64_hi(ah, al, bh, bl) { + var lo = (al + bl) >>> 0; + var hi = (lo < al ? 1 : 0) + ah + bh; + return hi >>> 0; +} +exports.sum64_hi = sum64_hi; - // In the rare event that the argument may be < 0 due to - // some arithmetic being done first, you can always use - // 0 MAX CHECKLOCKTIMEVERIFY. - if (nLockTime.lt(new BN(0))) { - this.errstr = 'SCRIPT_ERR_NEGATIVE_LOCKTIME'; - return false; - } +function sum64_lo(ah, al, bh, bl) { + var lo = al + bl; + return lo >>> 0; +} +exports.sum64_lo = sum64_lo; - // Actually compare the specified lock time with the transaction. - if (!this.checkLockTime(nLockTime)) { - this.errstr = 'SCRIPT_ERR_UNSATISFIED_LOCKTIME'; - return false; - } - break; +function sum64_4_hi(ah, al, bh, bl, ch, cl, dh, dl) { + var carry = 0; + var lo = al; + lo = (lo + bl) >>> 0; + carry += lo < al ? 1 : 0; + lo = (lo + cl) >>> 0; + carry += lo < cl ? 1 : 0; + lo = (lo + dl) >>> 0; + carry += lo < dl ? 1 : 0; - case Opcode.OP_NOP3: - case Opcode.OP_CHECKSEQUENCEVERIFY: + var hi = ah + bh + ch + dh + carry; + return hi >>> 0; +} +exports.sum64_4_hi = sum64_4_hi; - if (!(this.flags & Interpreter.SCRIPT_VERIFY_CHECKSEQUENCEVERIFY)) { - // not enabled; treat as a NOP3 - if (this.flags & Interpreter.SCRIPT_VERIFY_DISCOURAGE_UPGRADABLE_NOPS) { - this.errstr = 'SCRIPT_ERR_DISCOURAGE_UPGRADABLE_NOPS'; - return false; - } - break; - } +function sum64_4_lo(ah, al, bh, bl, ch, cl, dh, dl) { + var lo = al + bl + cl + dl; + return lo >>> 0; +} +exports.sum64_4_lo = sum64_4_lo; - if (this.stack.length < 1) { - this.errstr = 'SCRIPT_ERR_INVALID_STACK_OPERATION'; - return false; - } +function sum64_5_hi(ah, al, bh, bl, ch, cl, dh, dl, eh, el) { + var carry = 0; + var lo = al; + lo = (lo + bl) >>> 0; + carry += lo < al ? 1 : 0; + lo = (lo + cl) >>> 0; + carry += lo < cl ? 1 : 0; + lo = (lo + dl) >>> 0; + carry += lo < dl ? 1 : 0; + lo = (lo + el) >>> 0; + carry += lo < el ? 1 : 0; + var hi = ah + bh + ch + dh + eh + carry; + return hi >>> 0; +} +exports.sum64_5_hi = sum64_5_hi; - // nSequence, like nLockTime, is a 32-bit unsigned - // integer field. See the comment in CHECKLOCKTIMEVERIFY - // regarding 5-byte numeric operands. +function sum64_5_lo(ah, al, bh, bl, ch, cl, dh, dl, eh, el) { + var lo = al + bl + cl + dl + el; - var nSequence = BN.fromScriptNumBuffer(this.stack[this.stack.length - 1], fRequireMinimal, 5); + return lo >>> 0; +} +exports.sum64_5_lo = sum64_5_lo; +function rotr64_hi(ah, al, num) { + var r = (al << (32 - num)) | (ah >>> num); + return r >>> 0; +} +exports.rotr64_hi = rotr64_hi; - // In the rare event that the argument may be < 0 due to - // some arithmetic being done first, you can always use - // 0 MAX CHECKSEQUENCEVERIFY. - if (nSequence.lt(new BN(0))) { - this.errstr = 'SCRIPT_ERR_NEGATIVE_LOCKTIME'; - return false; - } +function rotr64_lo(ah, al, num) { + var r = (ah << (32 - num)) | (al >>> num); + return r >>> 0; +} +exports.rotr64_lo = rotr64_lo; - // To provide for future soft-fork extensibility, if the - // operand has the disabled lock-time flag set, - // CHECKSEQUENCEVERIFY behaves as a NOP. - if ((nSequence & - Interpreter.SEQUENCE_LOCKTIME_DISABLE_FLAG) != 0) { - break; - } +function shr64_hi(ah, al, num) { + return ah >>> num; +} +exports.shr64_hi = shr64_hi; - // Actually compare the specified lock time with the transaction. - if (!this.checkSequence(nSequence)) { - this.errstr = 'SCRIPT_ERR_UNSATISFIED_LOCKTIME'; - return false; - } - break; +function shr64_lo(ah, al, num) { + var r = (ah << (32 - num)) | (al >>> num); + return r >>> 0; +} +exports.shr64_lo = shr64_lo; +},{"inherits":150,"minimalistic-assert":159}],150:[function(require,module,exports){ +if (typeof Object.create === 'function') { + // implementation from standard node.js 'util' module + module.exports = function inherits(ctor, superCtor) { + ctor.super_ = superCtor + ctor.prototype = Object.create(superCtor.prototype, { + constructor: { + value: ctor, + enumerable: false, + writable: true, + configurable: true + } + }); + }; +} else { + // old school shim for old browsers + module.exports = function inherits(ctor, superCtor) { + ctor.super_ = superCtor + var TempCtor = function () {} + TempCtor.prototype = superCtor.prototype + ctor.prototype = new TempCtor() + ctor.prototype.constructor = ctor + } +} +},{}],151:[function(require,module,exports){ +'use strict'; - case Opcode.OP_NOP1: - case Opcode.OP_NOP4: - case Opcode.OP_NOP5: - case Opcode.OP_NOP6: - case Opcode.OP_NOP7: - case Opcode.OP_NOP8: - case Opcode.OP_NOP9: - case Opcode.OP_NOP10: - { - if (this.flags & Interpreter.SCRIPT_VERIFY_DISCOURAGE_UPGRADABLE_NOPS) { - this.errstr = 'SCRIPT_ERR_DISCOURAGE_UPGRADABLE_NOPS'; - return false; - } - } - break; +var hash = require('hash.js'); +var utils = require('minimalistic-crypto-utils'); +var assert = require('minimalistic-assert'); - case Opcode.OP_IF: - case Opcode.OP_NOTIF: - { - // if [statements] [else [statements]] endif - // bool fValue = false; - fValue = false; - if (fExec) { - if (this.stack.length < 1) { - this.errstr = 'SCRIPT_ERR_UNBALANCED_CONDITIONAL'; - return false; - } +function HmacDRBG(options) { + if (!(this instanceof HmacDRBG)) + return new HmacDRBG(options); + this.hash = options.hash; + this.predResist = !!options.predResist; - buf = this.stack[this.stack.length - 1]; + this.outLen = this.hash.outSize; + this.minEntropy = options.minEntropy || this.hash.hmacStrength; - if (this.flags & Interpreter.SCRIPT_VERIFY_MINIMALIF) { - buf = this.stack[this.stack.length - 1]; - if (buf.length > 1) { - this.errstr = 'SCRIPT_ERR_MINIMALIF'; - return false; - } - if (buf.length == 1 && buf[0]!=1) { - this.errstr = 'SCRIPT_ERR_MINIMALIF'; - return false; - } - } - fValue = Interpreter.castToBool(buf); - if (opcodenum === Opcode.OP_NOTIF) { - fValue = !fValue; - } - this.stack.pop(); - } - this.vfExec.push(fValue); - } - break; + this._reseed = null; + this.reseedInterval = null; + this.K = null; + this.V = null; - case Opcode.OP_ELSE: - { - if (this.vfExec.length === 0) { - this.errstr = 'SCRIPT_ERR_UNBALANCED_CONDITIONAL'; - return false; - } - this.vfExec[this.vfExec.length - 1] = !this.vfExec[this.vfExec.length - 1]; - } - break; + var entropy = utils.toArray(options.entropy, options.entropyEnc || 'hex'); + var nonce = utils.toArray(options.nonce, options.nonceEnc || 'hex'); + var pers = utils.toArray(options.pers, options.persEnc || 'hex'); + assert(entropy.length >= (this.minEntropy / 8), + 'Not enough entropy. Minimum is: ' + this.minEntropy + ' bits'); + this._init(entropy, nonce, pers); +} +module.exports = HmacDRBG; - case Opcode.OP_ENDIF: - { - if (this.vfExec.length === 0) { - this.errstr = 'SCRIPT_ERR_UNBALANCED_CONDITIONAL'; - return false; - } - this.vfExec.pop(); - } - break; +HmacDRBG.prototype._init = function init(entropy, nonce, pers) { + var seed = entropy.concat(nonce).concat(pers); - case Opcode.OP_VERIFY: - { - // (true -- ) or - // (false -- false) and return - if (this.stack.length < 1) { - this.errstr = 'SCRIPT_ERR_INVALID_STACK_OPERATION'; - return false; - } - buf = this.stack[this.stack.length - 1]; - fValue = Interpreter.castToBool(buf); - if (fValue) { - this.stack.pop(); - } else { - this.errstr = 'SCRIPT_ERR_VERIFY'; - return false; - } - } - break; + this.K = new Array(this.outLen / 8); + this.V = new Array(this.outLen / 8); + for (var i = 0; i < this.V.length; i++) { + this.K[i] = 0x00; + this.V[i] = 0x01; + } - case Opcode.OP_RETURN: - { - this.errstr = 'SCRIPT_ERR_OP_RETURN'; - return false; - } - break; + this._update(seed); + this._reseed = 1; + this.reseedInterval = 0x1000000000000; // 2^48 +}; + +HmacDRBG.prototype._hmac = function hmac() { + return new hash.hmac(this.hash, this.K); +}; +HmacDRBG.prototype._update = function update(seed) { + var kmac = this._hmac() + .update(this.V) + .update([ 0x00 ]); + if (seed) + kmac = kmac.update(seed); + this.K = kmac.digest(); + this.V = this._hmac().update(this.V).digest(); + if (!seed) + return; - // - // Stack ops - // - case Opcode.OP_TOALTSTACK: - { - if (this.stack.length < 1) { - this.errstr = 'SCRIPT_ERR_INVALID_STACK_OPERATION'; - return false; - } - this.altstack.push(this.stack.pop()); - } - break; + this.K = this._hmac() + .update(this.V) + .update([ 0x01 ]) + .update(seed) + .digest(); + this.V = this._hmac().update(this.V).digest(); +}; - case Opcode.OP_FROMALTSTACK: - { - if (this.altstack.length < 1) { - this.errstr = 'SCRIPT_ERR_INVALID_ALTSTACK_OPERATION'; - return false; - } - this.stack.push(this.altstack.pop()); - } - break; +HmacDRBG.prototype.reseed = function reseed(entropy, entropyEnc, add, addEnc) { + // Optional entropy enc + if (typeof entropyEnc !== 'string') { + addEnc = add; + add = entropyEnc; + entropyEnc = null; + } - case Opcode.OP_2DROP: - { - // (x1 x2 -- ) - if (this.stack.length < 2) { - this.errstr = 'SCRIPT_ERR_INVALID_STACK_OPERATION'; - return false; - } - this.stack.pop(); - this.stack.pop(); - } - break; + entropy = utils.toArray(entropy, entropyEnc); + add = utils.toArray(add, addEnc); - case Opcode.OP_2DUP: - { - // (x1 x2 -- x1 x2 x1 x2) - if (this.stack.length < 2) { - this.errstr = 'SCRIPT_ERR_INVALID_STACK_OPERATION'; - return false; - } - buf1 = this.stack[this.stack.length - 2]; - buf2 = this.stack[this.stack.length - 1]; - this.stack.push(buf1); - this.stack.push(buf2); - } - break; + assert(entropy.length >= (this.minEntropy / 8), + 'Not enough entropy. Minimum is: ' + this.minEntropy + ' bits'); - case Opcode.OP_3DUP: - { - // (x1 x2 x3 -- x1 x2 x3 x1 x2 x3) - if (this.stack.length < 3) { - this.errstr = 'SCRIPT_ERR_INVALID_STACK_OPERATION'; - return false; - } - buf1 = this.stack[this.stack.length - 3]; - buf2 = this.stack[this.stack.length - 2]; - var buf3 = this.stack[this.stack.length - 1]; - this.stack.push(buf1); - this.stack.push(buf2); - this.stack.push(buf3); - } - break; + this._update(entropy.concat(add || [])); + this._reseed = 1; +}; - case Opcode.OP_2OVER: - { - // (x1 x2 x3 x4 -- x1 x2 x3 x4 x1 x2) - if (this.stack.length < 4) { - this.errstr = 'SCRIPT_ERR_INVALID_STACK_OPERATION'; - return false; - } - buf1 = this.stack[this.stack.length - 4]; - buf2 = this.stack[this.stack.length - 3]; - this.stack.push(buf1); - this.stack.push(buf2); - } - break; +HmacDRBG.prototype.generate = function generate(len, enc, add, addEnc) { + if (this._reseed > this.reseedInterval) + throw new Error('Reseed is required'); - case Opcode.OP_2ROT: - { - // (x1 x2 x3 x4 x5 x6 -- x3 x4 x5 x6 x1 x2) - if (this.stack.length < 6) { - this.errstr = 'SCRIPT_ERR_INVALID_STACK_OPERATION'; - return false; - } - spliced = this.stack.splice(this.stack.length - 6, 2); - this.stack.push(spliced[0]); - this.stack.push(spliced[1]); - } - break; + // Optional encoding + if (typeof enc !== 'string') { + addEnc = add; + add = enc; + enc = null; + } - case Opcode.OP_2SWAP: - { - // (x1 x2 x3 x4 -- x3 x4 x1 x2) - if (this.stack.length < 4) { - this.errstr = 'SCRIPT_ERR_INVALID_STACK_OPERATION'; - return false; - } - spliced = this.stack.splice(this.stack.length - 4, 2); - this.stack.push(spliced[0]); - this.stack.push(spliced[1]); - } - break; + // Optional additional data + if (add) { + add = utils.toArray(add, addEnc || 'hex'); + this._update(add); + } - case Opcode.OP_IFDUP: - { - // (x - 0 | x x) - if (this.stack.length < 1) { - this.errstr = 'SCRIPT_ERR_INVALID_STACK_OPERATION'; - return false; - } - buf = this.stack[this.stack.length - 1]; - fValue = Interpreter.castToBool(buf); - if (fValue) { - this.stack.push(buf); - } - } - break; + var temp = []; + while (temp.length < len) { + this.V = this._hmac().update(this.V).digest(); + temp = temp.concat(this.V); + } - case Opcode.OP_DEPTH: - { - // -- stacksize - buf = new BN(this.stack.length).toScriptNumBuffer(); - this.stack.push(buf); - } - break; + var res = temp.slice(0, len); + this._update(add); + this._reseed++; + return utils.encode(res, enc); +}; - case Opcode.OP_DROP: - { - // (x -- ) - if (this.stack.length < 1) { - this.errstr = 'SCRIPT_ERR_INVALID_STACK_OPERATION'; - return false; - } - this.stack.pop(); - } - break; +},{"hash.js":138,"minimalistic-assert":159,"minimalistic-crypto-utils":160}],152:[function(require,module,exports){ +exports.read = function (buffer, offset, isLE, mLen, nBytes) { + var e, m + var eLen = (nBytes * 8) - mLen - 1 + var eMax = (1 << eLen) - 1 + var eBias = eMax >> 1 + var nBits = -7 + var i = isLE ? (nBytes - 1) : 0 + var d = isLE ? -1 : 1 + var s = buffer[offset + i] - case Opcode.OP_DUP: - { - // (x -- x x) - if (this.stack.length < 1) { - this.errstr = 'SCRIPT_ERR_INVALID_STACK_OPERATION'; - return false; - } - this.stack.push(this.stack[this.stack.length - 1]); - } - break; + i += d - case Opcode.OP_NIP: - { - // (x1 x2 -- x2) - if (this.stack.length < 2) { - this.errstr = 'SCRIPT_ERR_INVALID_STACK_OPERATION'; - return false; - } - this.stack.splice(this.stack.length - 2, 1); - } - break; + e = s & ((1 << (-nBits)) - 1) + s >>= (-nBits) + nBits += eLen + for (; nBits > 0; e = (e * 256) + buffer[offset + i], i += d, nBits -= 8) {} - case Opcode.OP_OVER: - { - // (x1 x2 -- x1 x2 x1) - if (this.stack.length < 2) { - this.errstr = 'SCRIPT_ERR_INVALID_STACK_OPERATION'; - return false; - } - this.stack.push(this.stack[this.stack.length - 2]); - } - break; + m = e & ((1 << (-nBits)) - 1) + e >>= (-nBits) + nBits += mLen + for (; nBits > 0; m = (m * 256) + buffer[offset + i], i += d, nBits -= 8) {} - case Opcode.OP_PICK: - case Opcode.OP_ROLL: - { - // (xn ... x2 x1 x0 n - xn ... x2 x1 x0 xn) - // (xn ... x2 x1 x0 n - ... x2 x1 x0 xn) - if (this.stack.length < 2) { - this.errstr = 'SCRIPT_ERR_INVALID_STACK_OPERATION'; - return false; - } - buf = this.stack[this.stack.length - 1]; - bn = BN.fromScriptNumBuffer(buf, fRequireMinimal); - n = bn.toNumber(); - this.stack.pop(); - if (n < 0 || n >= this.stack.length) { - this.errstr = 'SCRIPT_ERR_INVALID_STACK_OPERATION'; - return false; - } - buf = this.stack[this.stack.length - n - 1]; - if (opcodenum === Opcode.OP_ROLL) { - this.stack.splice(this.stack.length - n - 1, 1); - } - this.stack.push(buf); - } - break; + if (e === 0) { + e = 1 - eBias + } else if (e === eMax) { + return m ? NaN : ((s ? -1 : 1) * Infinity) + } else { + m = m + Math.pow(2, mLen) + e = e - eBias + } + return (s ? -1 : 1) * m * Math.pow(2, e - mLen) +} - case Opcode.OP_ROT: - { - // (x1 x2 x3 -- x2 x3 x1) - // x2 x1 x3 after first swap - // x2 x3 x1 after second swap - if (this.stack.length < 3) { - this.errstr = 'SCRIPT_ERR_INVALID_STACK_OPERATION'; - return false; - } - x1 = this.stack[this.stack.length - 3]; - x2 = this.stack[this.stack.length - 2]; - var x3 = this.stack[this.stack.length - 1]; - this.stack[this.stack.length - 3] = x2; - this.stack[this.stack.length - 2] = x3; - this.stack[this.stack.length - 1] = x1; - } - break; +exports.write = function (buffer, value, offset, isLE, mLen, nBytes) { + var e, m, c + var eLen = (nBytes * 8) - mLen - 1 + var eMax = (1 << eLen) - 1 + var eBias = eMax >> 1 + var rt = (mLen === 23 ? Math.pow(2, -24) - Math.pow(2, -77) : 0) + var i = isLE ? 0 : (nBytes - 1) + var d = isLE ? 1 : -1 + var s = value < 0 || (value === 0 && 1 / value < 0) ? 1 : 0 - case Opcode.OP_SWAP: - { - // (x1 x2 -- x2 x1) - if (this.stack.length < 2) { - this.errstr = 'SCRIPT_ERR_INVALID_STACK_OPERATION'; - return false; - } - x1 = this.stack[this.stack.length - 2]; - x2 = this.stack[this.stack.length - 1]; - this.stack[this.stack.length - 2] = x2; - this.stack[this.stack.length - 1] = x1; - } - break; + value = Math.abs(value) - case Opcode.OP_TUCK: - { - // (x1 x2 -- x2 x1 x2) - if (this.stack.length < 2) { - this.errstr = 'SCRIPT_ERR_INVALID_STACK_OPERATION'; - return false; - } - this.stack.splice(this.stack.length - 2, 0, this.stack[this.stack.length - 1]); - } - break; + if (isNaN(value) || value === Infinity) { + m = isNaN(value) ? 1 : 0 + e = eMax + } else { + e = Math.floor(Math.log(value) / Math.LN2) + if (value * (c = Math.pow(2, -e)) < 1) { + e-- + c *= 2 + } + if (e + eBias >= 1) { + value += rt / c + } else { + value += rt * Math.pow(2, 1 - eBias) + } + if (value * c >= 2) { + e++ + c /= 2 + } + if (e + eBias >= eMax) { + m = 0 + e = eMax + } else if (e + eBias >= 1) { + m = ((value * c) - 1) * Math.pow(2, mLen) + e = e + eBias + } else { + m = value * Math.pow(2, eBias - 1) * Math.pow(2, mLen) + e = 0 + } + } - case Opcode.OP_SIZE: - { - // (in -- in size) - if (this.stack.length < 1) { - this.errstr = 'SCRIPT_ERR_INVALID_STACK_OPERATION'; - return false; - } - bn = new BN(this.stack[this.stack.length - 1].length); - this.stack.push(bn.toScriptNumBuffer()); - } - break; + for (; mLen >= 8; buffer[offset + i] = m & 0xff, i += d, m /= 256, mLen -= 8) {} + e = (e << mLen) | m + eLen += mLen + for (; eLen > 0; buffer[offset + i] = e & 0xff, i += d, e /= 256, eLen -= 8) {} - // - // Bitwise logic - // - case Opcode.OP_EQUAL: - case Opcode.OP_EQUALVERIFY: - //case Opcode.OP_NOTEQUAL: // use Opcode.OP_NUMNOTEQUAL - { - // (x1 x2 - bool) - if (this.stack.length < 2) { - this.errstr = 'SCRIPT_ERR_INVALID_STACK_OPERATION'; - return false; - } - buf1 = this.stack[this.stack.length - 2]; - buf2 = this.stack[this.stack.length - 1]; - var fEqual = buf1.toString('hex') === buf2.toString('hex'); - this.stack.pop(); - this.stack.pop(); - this.stack.push(fEqual ? Interpreter.true : Interpreter.false); - if (opcodenum === Opcode.OP_EQUALVERIFY) { - if (fEqual) { - this.stack.pop(); - } else { - this.errstr = 'SCRIPT_ERR_EQUALVERIFY'; - return false; - } - } - } - break; + buffer[offset + i - d] |= s * 128 +} +},{}],153:[function(require,module,exports){ +arguments[4][150][0].apply(exports,arguments) +},{"dup":150}],154:[function(require,module,exports){ +/*! + * Determine if an object is a Buffer + * + * @author Feross Aboukhadijeh + * @license MIT + */ - // - // Numeric - // - case Opcode.OP_1ADD: - case Opcode.OP_1SUB: - case Opcode.OP_NEGATE: - case Opcode.OP_ABS: - case Opcode.OP_NOT: - case Opcode.OP_0NOTEQUAL: - { - // (in -- out) - if (this.stack.length < 1) { - this.errstr = 'SCRIPT_ERR_INVALID_STACK_OPERATION'; - return false; - } - buf = this.stack[this.stack.length - 1]; - bn = BN.fromScriptNumBuffer(buf, fRequireMinimal); - switch (opcodenum) { - case Opcode.OP_1ADD: - bn = bn.add(BN.One); - break; - case Opcode.OP_1SUB: - bn = bn.sub(BN.One); - break; - case Opcode.OP_NEGATE: - bn = bn.neg(); - break; - case Opcode.OP_ABS: - if (bn.cmp(BN.Zero) < 0) { - bn = bn.neg(); - } - break; - case Opcode.OP_NOT: - bn = new BN((bn.cmp(BN.Zero) === 0) + 0); - break; - case Opcode.OP_0NOTEQUAL: - bn = new BN((bn.cmp(BN.Zero) !== 0) + 0); - break; - //default: assert(!'invalid opcode'); break; // TODO: does this ever occur? - } - this.stack.pop(); - this.stack.push(bn.toScriptNumBuffer()); - } - break; +// The _isBuffer check is for Safari 5-7 support, because it's missing +// Object.prototype.constructor. Remove this eventually +module.exports = function (obj) { + return obj != null && (isBuffer(obj) || isSlowBuffer(obj) || !!obj._isBuffer) +} - case Opcode.OP_ADD: - case Opcode.OP_SUB: - case Opcode.OP_BOOLAND: - case Opcode.OP_BOOLOR: - case Opcode.OP_NUMEQUAL: - case Opcode.OP_NUMEQUALVERIFY: - case Opcode.OP_NUMNOTEQUAL: - case Opcode.OP_LESSTHAN: - case Opcode.OP_GREATERTHAN: - case Opcode.OP_LESSTHANOREQUAL: - case Opcode.OP_GREATERTHANOREQUAL: - case Opcode.OP_MIN: - case Opcode.OP_MAX: - { - // (x1 x2 -- out) - if (this.stack.length < 2) { - this.errstr = 'SCRIPT_ERR_INVALID_STACK_OPERATION'; - return false; - } - bn1 = BN.fromScriptNumBuffer(this.stack[this.stack.length - 2], fRequireMinimal); - bn2 = BN.fromScriptNumBuffer(this.stack[this.stack.length - 1], fRequireMinimal); - bn = new BN(0); +function isBuffer (obj) { + return !!obj.constructor && typeof obj.constructor.isBuffer === 'function' && obj.constructor.isBuffer(obj) +} - switch (opcodenum) { - case Opcode.OP_ADD: - bn = bn1.add(bn2); - break; +// For Node v0.10 support. Remove this eventually. +function isSlowBuffer (obj) { + return typeof obj.readFloatLE === 'function' && typeof obj.slice === 'function' && isBuffer(obj.slice(0, 0)) +} - case Opcode.OP_SUB: - bn = bn1.sub(bn2); - break; +},{}],155:[function(require,module,exports){ +var toString = {}.toString; - // case Opcode.OP_BOOLAND: bn = (bn1 != bnZero && bn2 != bnZero); break; - case Opcode.OP_BOOLAND: - bn = new BN(((bn1.cmp(BN.Zero) !== 0) && (bn2.cmp(BN.Zero) !== 0)) + 0); - break; - // case Opcode.OP_BOOLOR: bn = (bn1 != bnZero || bn2 != bnZero); break; - case Opcode.OP_BOOLOR: - bn = new BN(((bn1.cmp(BN.Zero) !== 0) || (bn2.cmp(BN.Zero) !== 0)) + 0); - break; - // case Opcode.OP_NUMEQUAL: bn = (bn1 == bn2); break; - case Opcode.OP_NUMEQUAL: - bn = new BN((bn1.cmp(bn2) === 0) + 0); - break; - // case Opcode.OP_NUMEQUALVERIFY: bn = (bn1 == bn2); break; - case Opcode.OP_NUMEQUALVERIFY: - bn = new BN((bn1.cmp(bn2) === 0) + 0); - break; - // case Opcode.OP_NUMNOTEQUAL: bn = (bn1 != bn2); break; - case Opcode.OP_NUMNOTEQUAL: - bn = new BN((bn1.cmp(bn2) !== 0) + 0); - break; - // case Opcode.OP_LESSTHAN: bn = (bn1 < bn2); break; - case Opcode.OP_LESSTHAN: - bn = new BN((bn1.cmp(bn2) < 0) + 0); - break; - // case Opcode.OP_GREATERTHAN: bn = (bn1 > bn2); break; - case Opcode.OP_GREATERTHAN: - bn = new BN((bn1.cmp(bn2) > 0) + 0); - break; - // case Opcode.OP_LESSTHANOREQUAL: bn = (bn1 <= bn2); break; - case Opcode.OP_LESSTHANOREQUAL: - bn = new BN((bn1.cmp(bn2) <= 0) + 0); - break; - // case Opcode.OP_GREATERTHANOREQUAL: bn = (bn1 >= bn2); break; - case Opcode.OP_GREATERTHANOREQUAL: - bn = new BN((bn1.cmp(bn2) >= 0) + 0); - break; - case Opcode.OP_MIN: - bn = (bn1.cmp(bn2) < 0 ? bn1 : bn2); - break; - case Opcode.OP_MAX: - bn = (bn1.cmp(bn2) > 0 ? bn1 : bn2); - break; - // default: assert(!'invalid opcode'); break; //TODO: does this ever occur? - } - this.stack.pop(); - this.stack.pop(); - this.stack.push(bn.toScriptNumBuffer()); +module.exports = Array.isArray || function (arr) { + return toString.call(arr) == '[object Array]'; +}; + +},{}],156:[function(require,module,exports){ +(function (global){ +/** + * @license + * Lodash + * Copyright JS Foundation and other contributors + * Released under MIT license + * Based on Underscore.js 1.8.3 + * Copyright Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors + */ +;(function() { - if (opcodenum === Opcode.OP_NUMEQUALVERIFY) { - // if (CastToBool(stacktop(-1))) - if (Interpreter.castToBool(this.stack[this.stack.length - 1])) { - this.stack.pop(); - } else { - this.errstr = 'SCRIPT_ERR_NUMEQUALVERIFY'; - return false; - } - } - } - break; + /** Used as a safe reference for `undefined` in pre-ES5 environments. */ + var undefined; - case Opcode.OP_WITHIN: - { - // (x min max -- out) - if (this.stack.length < 3) { - this.errstr = 'SCRIPT_ERR_INVALID_STACK_OPERATION'; - return false; - } - bn1 = BN.fromScriptNumBuffer(this.stack[this.stack.length - 3], fRequireMinimal); - bn2 = BN.fromScriptNumBuffer(this.stack[this.stack.length - 2], fRequireMinimal); - var bn3 = BN.fromScriptNumBuffer(this.stack[this.stack.length - 1], fRequireMinimal); - //bool fValue = (bn2 <= bn1 && bn1 < bn3); - fValue = (bn2.cmp(bn1) <= 0) && (bn1.cmp(bn3) < 0); - this.stack.pop(); - this.stack.pop(); - this.stack.pop(); - this.stack.push(fValue ? Interpreter.true : Interpreter.false); - } - break; + /** Used as the semantic version number. */ + var VERSION = '4.17.11'; + /** Used as the size to enable large array optimizations. */ + var LARGE_ARRAY_SIZE = 200; - // - // Crypto - // - case Opcode.OP_RIPEMD160: - case Opcode.OP_SHA1: - case Opcode.OP_SHA256: - case Opcode.OP_HASH160: - case Opcode.OP_HASH256: - { - // (in -- hash) - if (this.stack.length < 1) { - this.errstr = 'SCRIPT_ERR_INVALID_STACK_OPERATION'; - return false; - } - buf = this.stack[this.stack.length - 1]; - //valtype vchHash((opcode == Opcode.OP_RIPEMD160 || - // opcode == Opcode.OP_SHA1 || opcode == Opcode.OP_HASH160) ? 20 : 32); - var bufHash; - if (opcodenum === Opcode.OP_RIPEMD160) { - bufHash = Hash.ripemd160(buf); - } else if (opcodenum === Opcode.OP_SHA1) { - bufHash = Hash.sha1(buf); - } else if (opcodenum === Opcode.OP_SHA256) { - bufHash = Hash.sha256(buf); - } else if (opcodenum === Opcode.OP_HASH160) { - bufHash = Hash.sha256ripemd160(buf); - } else if (opcodenum === Opcode.OP_HASH256) { - bufHash = Hash.sha256sha256(buf); - } - this.stack.pop(); - this.stack.push(bufHash); - } - break; + /** Error message constants. */ + var CORE_ERROR_TEXT = 'Unsupported core-js use. Try https://npms.io/search?q=ponyfill.', + FUNC_ERROR_TEXT = 'Expected a function'; - case Opcode.OP_CODESEPARATOR: - { - // Hash starts after the code separator - this.pbegincodehash = this.pc; - } - break; + /** Used to stand-in for `undefined` hash values. */ + var HASH_UNDEFINED = '__lodash_hash_undefined__'; - case Opcode.OP_CHECKSIG: - case Opcode.OP_CHECKSIGVERIFY: - { - // (sig pubkey -- bool) - if (this.stack.length < 2) { - this.errstr = 'SCRIPT_ERR_INVALID_STACK_OPERATION'; - return false; - } + /** Used as the maximum memoize cache size. */ + var MAX_MEMOIZE_SIZE = 500; - bufSig = this.stack[this.stack.length - 2]; - bufPubkey = this.stack[this.stack.length - 1]; - if (!this.checkSignatureEncoding(bufSig) || !this.checkPubkeyEncoding(bufPubkey)) { - return false; - } + /** Used as the internal argument placeholder. */ + var PLACEHOLDER = '__lodash_placeholder__'; - // Subset of script starting at the most recent codeseparator - // CScript scriptCode(pbegincodehash, pend); - subscript = new Script().set({ - chunks: this.script.chunks.slice(this.pbegincodehash) - }); + /** Used to compose bitmasks for cloning. */ + var CLONE_DEEP_FLAG = 1, + CLONE_FLAT_FLAG = 2, + CLONE_SYMBOLS_FLAG = 4; - // Drop the signature, since there's no way for a signature to sign itself - var tmpScript = new Script().add(bufSig); - subscript.findAndDelete(tmpScript); + /** Used to compose bitmasks for value comparisons. */ + var COMPARE_PARTIAL_FLAG = 1, + COMPARE_UNORDERED_FLAG = 2; - try { - sig = Signature.fromTxFormat(bufSig); - pubkey = PublicKey.fromBuffer(bufPubkey, false); - fSuccess = this.tx.verifySignature(sig, pubkey, this.nin, subscript, this.sigversion, this.satoshis); - } catch (e) { - //invalid sig or pubkey - fSuccess = false; - } + /** Used to compose bitmasks for function metadata. */ + var WRAP_BIND_FLAG = 1, + WRAP_BIND_KEY_FLAG = 2, + WRAP_CURRY_BOUND_FLAG = 4, + WRAP_CURRY_FLAG = 8, + WRAP_CURRY_RIGHT_FLAG = 16, + WRAP_PARTIAL_FLAG = 32, + WRAP_PARTIAL_RIGHT_FLAG = 64, + WRAP_ARY_FLAG = 128, + WRAP_REARG_FLAG = 256, + WRAP_FLIP_FLAG = 512; - if (!fSuccess && (this.flags & Interpreter.SCRIPT_VERIFY_NULLFAIL) && - bufSig.length) { - this.errstr = 'SCRIPT_ERR_NULLFAIL'; - return false; - } + /** Used as default options for `_.truncate`. */ + var DEFAULT_TRUNC_LENGTH = 30, + DEFAULT_TRUNC_OMISSION = '...'; - this.stack.pop(); - this.stack.pop(); + /** Used to detect hot functions by number of calls within a span of milliseconds. */ + var HOT_COUNT = 800, + HOT_SPAN = 16; - // stack.push_back(fSuccess ? vchTrue : vchFalse); - this.stack.push(fSuccess ? Interpreter.true : Interpreter.false); - if (opcodenum === Opcode.OP_CHECKSIGVERIFY) { - if (fSuccess) { - this.stack.pop(); - } else { - this.errstr = 'SCRIPT_ERR_CHECKSIGVERIFY'; - return false; - } - } - } - break; + /** Used to indicate the type of lazy iteratees. */ + var LAZY_FILTER_FLAG = 1, + LAZY_MAP_FLAG = 2, + LAZY_WHILE_FLAG = 3; - case Opcode.OP_CHECKMULTISIG: - case Opcode.OP_CHECKMULTISIGVERIFY: - { - // ([sig ...] num_of_signatures [pubkey ...] num_of_pubkeys -- bool) + /** Used as references for various `Number` constants. */ + var INFINITY = 1 / 0, + MAX_SAFE_INTEGER = 9007199254740991, + MAX_INTEGER = 1.7976931348623157e+308, + NAN = 0 / 0; - var i = 1; - if (this.stack.length < i) { - this.errstr = 'SCRIPT_ERR_INVALID_STACK_OPERATION'; - return false; - } + /** Used as references for the maximum length and index of an array. */ + var MAX_ARRAY_LENGTH = 4294967295, + MAX_ARRAY_INDEX = MAX_ARRAY_LENGTH - 1, + HALF_MAX_ARRAY_LENGTH = MAX_ARRAY_LENGTH >>> 1; - var nKeysCount = BN.fromScriptNumBuffer(this.stack[this.stack.length - i], fRequireMinimal).toNumber(); - if (nKeysCount < 0 || nKeysCount > 20) { - this.errstr = 'SCRIPT_ERR_PUBKEY_COUNT'; - return false; - } - this.nOpCount += nKeysCount; - if (this.nOpCount > 201) { - this.errstr = 'SCRIPT_ERR_OP_COUNT'; - return false; - } - // int ikey = ++i; - var ikey = ++i; - i += nKeysCount; + /** Used to associate wrap methods with their bit flags. */ + var wrapFlags = [ + ['ary', WRAP_ARY_FLAG], + ['bind', WRAP_BIND_FLAG], + ['bindKey', WRAP_BIND_KEY_FLAG], + ['curry', WRAP_CURRY_FLAG], + ['curryRight', WRAP_CURRY_RIGHT_FLAG], + ['flip', WRAP_FLIP_FLAG], + ['partial', WRAP_PARTIAL_FLAG], + ['partialRight', WRAP_PARTIAL_RIGHT_FLAG], + ['rearg', WRAP_REARG_FLAG] + ]; - // ikey2 is the position of last non-signature item in - // the stack. Top stack item = 1. With - // SCRIPT_VERIFY_NULLFAIL, this is used for cleanup if - // operation fails. - var ikey2 = nKeysCount + 2; + /** `Object#toString` result references. */ + var argsTag = '[object Arguments]', + arrayTag = '[object Array]', + asyncTag = '[object AsyncFunction]', + boolTag = '[object Boolean]', + dateTag = '[object Date]', + domExcTag = '[object DOMException]', + errorTag = '[object Error]', + funcTag = '[object Function]', + genTag = '[object GeneratorFunction]', + mapTag = '[object Map]', + numberTag = '[object Number]', + nullTag = '[object Null]', + objectTag = '[object Object]', + promiseTag = '[object Promise]', + proxyTag = '[object Proxy]', + regexpTag = '[object RegExp]', + setTag = '[object Set]', + stringTag = '[object String]', + symbolTag = '[object Symbol]', + undefinedTag = '[object Undefined]', + weakMapTag = '[object WeakMap]', + weakSetTag = '[object WeakSet]'; - if (this.stack.length < i) { - this.errstr = 'SCRIPT_ERR_INVALID_STACK_OPERATION'; - return false; - } + var arrayBufferTag = '[object ArrayBuffer]', + dataViewTag = '[object DataView]', + float32Tag = '[object Float32Array]', + float64Tag = '[object Float64Array]', + int8Tag = '[object Int8Array]', + int16Tag = '[object Int16Array]', + int32Tag = '[object Int32Array]', + uint8Tag = '[object Uint8Array]', + uint8ClampedTag = '[object Uint8ClampedArray]', + uint16Tag = '[object Uint16Array]', + uint32Tag = '[object Uint32Array]'; - var nSigsCount = BN.fromScriptNumBuffer(this.stack[this.stack.length - i], fRequireMinimal).toNumber(); - if (nSigsCount < 0 || nSigsCount > nKeysCount) { - this.errstr = 'SCRIPT_ERR_SIG_COUNT'; - return false; - } - // int isig = ++i; - var isig = ++i; - i += nSigsCount; - if (this.stack.length < i) { - this.errstr = 'SCRIPT_ERR_INVALID_STACK_OPERATION'; - return false; - } + /** Used to match empty string literals in compiled template source. */ + var reEmptyStringLeading = /\b__p \+= '';/g, + reEmptyStringMiddle = /\b(__p \+=) '' \+/g, + reEmptyStringTrailing = /(__e\(.*?\)|\b__t\)) \+\n'';/g; - // Subset of script starting at the most recent codeseparator - subscript = new Script().set({ - chunks: this.script.chunks.slice(this.pbegincodehash) - }); + /** Used to match HTML entities and HTML characters. */ + var reEscapedHtml = /&(?:amp|lt|gt|quot|#39);/g, + reUnescapedHtml = /[&<>"']/g, + reHasEscapedHtml = RegExp(reEscapedHtml.source), + reHasUnescapedHtml = RegExp(reUnescapedHtml.source); - // Drop the signatures, since there's no way for a signature to sign itself - for (var k = 0; k < nSigsCount; k++) { - bufSig = this.stack[this.stack.length - isig - k]; - subscript.findAndDelete(new Script().add(bufSig)); - } + /** Used to match template delimiters. */ + var reEscape = /<%-([\s\S]+?)%>/g, + reEvaluate = /<%([\s\S]+?)%>/g, + reInterpolate = /<%=([\s\S]+?)%>/g; - fSuccess = true; - while (fSuccess && nSigsCount > 0) { - // valtype& vchSig = stacktop(-isig); - bufSig = this.stack[this.stack.length - isig]; - // valtype& vchPubKey = stacktop(-ikey); - bufPubkey = this.stack[this.stack.length - ikey]; + /** Used to match property names within property paths. */ + var reIsDeepProp = /\.|\[(?:[^[\]]*|(["'])(?:(?!\1)[^\\]|\\.)*?\1)\]/, + reIsPlainProp = /^\w*$/, + rePropName = /[^.[\]]+|\[(?:(-?\d+(?:\.\d+)?)|(["'])((?:(?!\2)[^\\]|\\.)*?)\2)\]|(?=(?:\.|\[\])(?:\.|\[\]|$))/g; - if (!this.checkSignatureEncoding(bufSig) || !this.checkPubkeyEncoding(bufPubkey)) { - return false; - } + /** + * Used to match `RegExp` + * [syntax characters](http://ecma-international.org/ecma-262/7.0/#sec-patterns). + */ + var reRegExpChar = /[\\^$.*+?()[\]{}|]/g, + reHasRegExpChar = RegExp(reRegExpChar.source); - var fOk; - try { - sig = Signature.fromTxFormat(bufSig); - pubkey = PublicKey.fromBuffer(bufPubkey, false); - fOk = this.tx.verifySignature(sig, pubkey, this.nin, subscript, this.sigversion, this.satoshis); - } catch (e) { - //invalid sig or pubkey - fOk = false; - } + /** Used to match leading and trailing whitespace. */ + var reTrim = /^\s+|\s+$/g, + reTrimStart = /^\s+/, + reTrimEnd = /\s+$/; - if (fOk) { - isig++; - nSigsCount--; - } - ikey++; - nKeysCount--; + /** Used to match wrap detail comments. */ + var reWrapComment = /\{(?:\n\/\* \[wrapped with .+\] \*\/)?\n?/, + reWrapDetails = /\{\n\/\* \[wrapped with (.+)\] \*/, + reSplitDetails = /,? & /; - // If there are more signatures left than keys left, - // then too many signatures have failed - if (nSigsCount > nKeysCount) { - fSuccess = false; - } - } + /** Used to match words composed of alphanumeric characters. */ + var reAsciiWord = /[^\x00-\x2f\x3a-\x40\x5b-\x60\x7b-\x7f]+/g; + /** Used to match backslashes in property paths. */ + var reEscapeChar = /\\(\\)?/g; - // Clean up stack of actual arguments - while (i-- > 1) { - if (!fSuccess && (this.flags & Interpreter.SCRIPT_VERIFY_NULLFAIL) && - !ikey2 && this.stack[this.stack.length - 1].length) { + /** + * Used to match + * [ES template delimiters](http://ecma-international.org/ecma-262/7.0/#sec-template-literal-lexical-components). + */ + var reEsTemplate = /\$\{([^\\}]*(?:\\.[^\\}]*)*)\}/g; - this.errstr = 'SCRIPT_ERR_NULLFAIL'; - return false; - } + /** Used to match `RegExp` flags from their coerced string values. */ + var reFlags = /\w*$/; - if (ikey2 > 0) { - ikey2--; - } + /** Used to detect bad signed hexadecimal string values. */ + var reIsBadHex = /^[-+]0x[0-9a-f]+$/i; - this.stack.pop(); - } + /** Used to detect binary string values. */ + var reIsBinary = /^0b[01]+$/i; - // A bug causes CHECKMULTISIG to consume one extra argument - // whose contents were not checked in any way. - // - // Unfortunately this is a potential source of mutability, - // so optionally verify it is exactly equal to zero prior - // to removing it from the stack. - if (this.stack.length < 1) { - this.errstr = 'SCRIPT_ERR_INVALID_STACK_OPERATION'; - return false; - } - if ((this.flags & Interpreter.SCRIPT_VERIFY_NULLDUMMY) && this.stack[this.stack.length - 1].length) { - this.errstr = 'SCRIPT_ERR_SIG_NULLDUMMY'; - return false; - } - this.stack.pop(); + /** Used to detect host constructors (Safari). */ + var reIsHostCtor = /^\[object .+?Constructor\]$/; - this.stack.push(fSuccess ? Interpreter.true : Interpreter.false); + /** Used to detect octal string values. */ + var reIsOctal = /^0o[0-7]+$/i; - if (opcodenum === Opcode.OP_CHECKMULTISIGVERIFY) { - if (fSuccess) { - this.stack.pop(); - } else { - this.errstr = 'SCRIPT_ERR_CHECKMULTISIGVERIFY'; - return false; - } - } - } - break; + /** Used to detect unsigned integer values. */ + var reIsUint = /^(?:0|[1-9]\d*)$/; - default: - this.errstr = 'SCRIPT_ERR_BAD_OPCODE'; - return false; - } - } + /** Used to match Latin Unicode letters (excluding mathematical operators). */ + var reLatin = /[\xc0-\xd6\xd8-\xf6\xf8-\xff\u0100-\u017f]/g; - return true; -}; + /** Used to ensure capturing order of template delimiters. */ + var reNoMatch = /($^)/; + /** Used to match unescaped characters in compiled string literals. */ + var reUnescapedString = /['\n\r\u2028\u2029\\]/g; -}).call(this,require("buffer").Buffer) -},{"../crypto/bn":169,"../crypto/hash":171,"../crypto/signature":174,"../opcode":185,"../publickey":187,"../transaction":191,"./script":190,"buffer":52,"lodash":245}],190:[function(require,module,exports){ -(function (Buffer){ -'use strict'; + /** Used to compose unicode character classes. */ + var rsAstralRange = '\\ud800-\\udfff', + rsComboMarksRange = '\\u0300-\\u036f', + reComboHalfMarksRange = '\\ufe20-\\ufe2f', + rsComboSymbolsRange = '\\u20d0-\\u20ff', + rsComboRange = rsComboMarksRange + reComboHalfMarksRange + rsComboSymbolsRange, + rsDingbatRange = '\\u2700-\\u27bf', + rsLowerRange = 'a-z\\xdf-\\xf6\\xf8-\\xff', + rsMathOpRange = '\\xac\\xb1\\xd7\\xf7', + rsNonCharRange = '\\x00-\\x2f\\x3a-\\x40\\x5b-\\x60\\x7b-\\xbf', + rsPunctuationRange = '\\u2000-\\u206f', + rsSpaceRange = ' \\t\\x0b\\f\\xa0\\ufeff\\n\\r\\u2028\\u2029\\u1680\\u180e\\u2000\\u2001\\u2002\\u2003\\u2004\\u2005\\u2006\\u2007\\u2008\\u2009\\u200a\\u202f\\u205f\\u3000', + rsUpperRange = 'A-Z\\xc0-\\xd6\\xd8-\\xde', + rsVarRange = '\\ufe0e\\ufe0f', + rsBreakRange = rsMathOpRange + rsNonCharRange + rsPunctuationRange + rsSpaceRange; -var Address = require('../address'); -var BufferReader = require('../encoding/bufferreader'); -var BufferWriter = require('../encoding/bufferwriter'); -var Hash = require('../crypto/hash'); -var Opcode = require('../opcode'); -var PublicKey = require('../publickey'); -var Signature = require('../crypto/signature'); -var Networks = require('../networks'); -var $ = require('../util/preconditions'); -var _ = require('lodash'); -var errors = require('../errors'); -var buffer = require('buffer'); -var BufferUtil = require('../util/buffer'); -var JSUtil = require('../util/js'); + /** Used to compose unicode capture groups. */ + var rsApos = "['\u2019]", + rsAstral = '[' + rsAstralRange + ']', + rsBreak = '[' + rsBreakRange + ']', + rsCombo = '[' + rsComboRange + ']', + rsDigits = '\\d+', + rsDingbat = '[' + rsDingbatRange + ']', + rsLower = '[' + rsLowerRange + ']', + rsMisc = '[^' + rsAstralRange + rsBreakRange + rsDigits + rsDingbatRange + rsLowerRange + rsUpperRange + ']', + rsFitz = '\\ud83c[\\udffb-\\udfff]', + rsModifier = '(?:' + rsCombo + '|' + rsFitz + ')', + rsNonAstral = '[^' + rsAstralRange + ']', + rsRegional = '(?:\\ud83c[\\udde6-\\uddff]){2}', + rsSurrPair = '[\\ud800-\\udbff][\\udc00-\\udfff]', + rsUpper = '[' + rsUpperRange + ']', + rsZWJ = '\\u200d'; -/** - * A bitcoin transaction script. Each transaction's inputs and outputs - * has a script that is evaluated to validate it's spending. - * - * See https://en.bitcoin.it/wiki/Script - * - * @constructor - * @param {Object|string|Buffer=} from optional data to populate script - */ -var Script = function Script(from) { - if (!(this instanceof Script)) { - return new Script(from); - } - this.chunks = []; + /** Used to compose unicode regexes. */ + var rsMiscLower = '(?:' + rsLower + '|' + rsMisc + ')', + rsMiscUpper = '(?:' + rsUpper + '|' + rsMisc + ')', + rsOptContrLower = '(?:' + rsApos + '(?:d|ll|m|re|s|t|ve))?', + rsOptContrUpper = '(?:' + rsApos + '(?:D|LL|M|RE|S|T|VE))?', + reOptMod = rsModifier + '?', + rsOptVar = '[' + rsVarRange + ']?', + rsOptJoin = '(?:' + rsZWJ + '(?:' + [rsNonAstral, rsRegional, rsSurrPair].join('|') + ')' + rsOptVar + reOptMod + ')*', + rsOrdLower = '\\d*(?:1st|2nd|3rd|(?![123])\\dth)(?=\\b|[A-Z_])', + rsOrdUpper = '\\d*(?:1ST|2ND|3RD|(?![123])\\dTH)(?=\\b|[a-z_])', + rsSeq = rsOptVar + reOptMod + rsOptJoin, + rsEmoji = '(?:' + [rsDingbat, rsRegional, rsSurrPair].join('|') + ')' + rsSeq, + rsSymbol = '(?:' + [rsNonAstral + rsCombo + '?', rsCombo, rsRegional, rsSurrPair, rsAstral].join('|') + ')'; - if (BufferUtil.isBuffer(from)) { - return Script.fromBuffer(from); - } else if (from instanceof Address) { - return Script.fromAddress(from); - } else if (from instanceof Script) { - return Script.fromBuffer(from.toBuffer()); - } else if (_.isString(from)) { - return Script.fromString(from); - } else if (_.isObject(from) && _.isArray(from.chunks)) { - this.set(from); - } -}; + /** Used to match apostrophes. */ + var reApos = RegExp(rsApos, 'g'); -Script.prototype.set = function(obj) { - $.checkArgument(_.isObject(obj)); - $.checkArgument(_.isArray(obj.chunks)); - this.chunks = obj.chunks; - return this; -}; + /** + * Used to match [combining diacritical marks](https://en.wikipedia.org/wiki/Combining_Diacritical_Marks) and + * [combining diacritical marks for symbols](https://en.wikipedia.org/wiki/Combining_Diacritical_Marks_for_Symbols). + */ + var reComboMark = RegExp(rsCombo, 'g'); + + /** Used to match [string symbols](https://mathiasbynens.be/notes/javascript-unicode). */ + var reUnicode = RegExp(rsFitz + '(?=' + rsFitz + ')|' + rsSymbol + rsSeq, 'g'); + + /** Used to match complex or compound words. */ + var reUnicodeWord = RegExp([ + rsUpper + '?' + rsLower + '+' + rsOptContrLower + '(?=' + [rsBreak, rsUpper, '$'].join('|') + ')', + rsMiscUpper + '+' + rsOptContrUpper + '(?=' + [rsBreak, rsUpper + rsMiscLower, '$'].join('|') + ')', + rsUpper + '?' + rsMiscLower + '+' + rsOptContrLower, + rsUpper + '+' + rsOptContrUpper, + rsOrdUpper, + rsOrdLower, + rsDigits, + rsEmoji + ].join('|'), 'g'); -Script.fromBuffer = function(buffer) { - var script = new Script(); - script.chunks = []; + /** Used to detect strings with [zero-width joiners or code points from the astral planes](http://eev.ee/blog/2015/09/12/dark-corners-of-unicode/). */ + var reHasUnicode = RegExp('[' + rsZWJ + rsAstralRange + rsComboRange + rsVarRange + ']'); - var br = new BufferReader(buffer); - while (!br.finished()) { - try { - var opcodenum = br.readUInt8(); + /** Used to detect strings that need a more robust regexp to match words. */ + var reHasUnicodeWord = /[a-z][A-Z]|[A-Z]{2}[a-z]|[0-9][a-zA-Z]|[a-zA-Z][0-9]|[^a-zA-Z0-9 ]/; - var len, buf; - if (opcodenum > 0 && opcodenum < Opcode.OP_PUSHDATA1) { - len = opcodenum; - script.chunks.push({ - buf: br.read(len), - len: len, - opcodenum: opcodenum - }); - } else if (opcodenum === Opcode.OP_PUSHDATA1) { - len = br.readUInt8(); - buf = br.read(len); - script.chunks.push({ - buf: buf, - len: len, - opcodenum: opcodenum - }); - } else if (opcodenum === Opcode.OP_PUSHDATA2) { - len = br.readUInt16LE(); - buf = br.read(len); - script.chunks.push({ - buf: buf, - len: len, - opcodenum: opcodenum - }); - } else if (opcodenum === Opcode.OP_PUSHDATA4) { - len = br.readUInt32LE(); - buf = br.read(len); - script.chunks.push({ - buf: buf, - len: len, - opcodenum: opcodenum - }); - } else { - script.chunks.push({ - opcodenum: opcodenum - }); - } - } catch (e) { - if (e instanceof RangeError) { - throw new errors.Script.InvalidBuffer(buffer.toString('hex')); - } - throw e; - } - } + /** Used to assign default `context` object properties. */ + var contextProps = [ + 'Array', 'Buffer', 'DataView', 'Date', 'Error', 'Float32Array', 'Float64Array', + 'Function', 'Int8Array', 'Int16Array', 'Int32Array', 'Map', 'Math', 'Object', + 'Promise', 'RegExp', 'Set', 'String', 'Symbol', 'TypeError', 'Uint8Array', + 'Uint8ClampedArray', 'Uint16Array', 'Uint32Array', 'WeakMap', + '_', 'clearTimeout', 'isFinite', 'parseInt', 'setTimeout' + ]; - return script; -}; + /** Used to make template sourceURLs easier to identify. */ + var templateCounter = -1; -Script.prototype.toBuffer = function() { - var bw = new BufferWriter(); + /** Used to identify `toStringTag` values of typed arrays. */ + var typedArrayTags = {}; + typedArrayTags[float32Tag] = typedArrayTags[float64Tag] = + typedArrayTags[int8Tag] = typedArrayTags[int16Tag] = + typedArrayTags[int32Tag] = typedArrayTags[uint8Tag] = + typedArrayTags[uint8ClampedTag] = typedArrayTags[uint16Tag] = + typedArrayTags[uint32Tag] = true; + typedArrayTags[argsTag] = typedArrayTags[arrayTag] = + typedArrayTags[arrayBufferTag] = typedArrayTags[boolTag] = + typedArrayTags[dataViewTag] = typedArrayTags[dateTag] = + typedArrayTags[errorTag] = typedArrayTags[funcTag] = + typedArrayTags[mapTag] = typedArrayTags[numberTag] = + typedArrayTags[objectTag] = typedArrayTags[regexpTag] = + typedArrayTags[setTag] = typedArrayTags[stringTag] = + typedArrayTags[weakMapTag] = false; - for (var i = 0; i < this.chunks.length; i++) { - var chunk = this.chunks[i]; - var opcodenum = chunk.opcodenum; - bw.writeUInt8(chunk.opcodenum); - if (chunk.buf) { - if (opcodenum < Opcode.OP_PUSHDATA1) { - bw.write(chunk.buf); - } else if (opcodenum === Opcode.OP_PUSHDATA1) { - bw.writeUInt8(chunk.len); - bw.write(chunk.buf); - } else if (opcodenum === Opcode.OP_PUSHDATA2) { - bw.writeUInt16LE(chunk.len); - bw.write(chunk.buf); - } else if (opcodenum === Opcode.OP_PUSHDATA4) { - bw.writeUInt32LE(chunk.len); - bw.write(chunk.buf); - } - } - } + /** Used to identify `toStringTag` values supported by `_.clone`. */ + var cloneableTags = {}; + cloneableTags[argsTag] = cloneableTags[arrayTag] = + cloneableTags[arrayBufferTag] = cloneableTags[dataViewTag] = + cloneableTags[boolTag] = cloneableTags[dateTag] = + cloneableTags[float32Tag] = cloneableTags[float64Tag] = + cloneableTags[int8Tag] = cloneableTags[int16Tag] = + cloneableTags[int32Tag] = cloneableTags[mapTag] = + cloneableTags[numberTag] = cloneableTags[objectTag] = + cloneableTags[regexpTag] = cloneableTags[setTag] = + cloneableTags[stringTag] = cloneableTags[symbolTag] = + cloneableTags[uint8Tag] = cloneableTags[uint8ClampedTag] = + cloneableTags[uint16Tag] = cloneableTags[uint32Tag] = true; + cloneableTags[errorTag] = cloneableTags[funcTag] = + cloneableTags[weakMapTag] = false; - return bw.concat(); -}; + /** Used to map Latin Unicode letters to basic Latin letters. */ + var deburredLetters = { + // Latin-1 Supplement block. + '\xc0': 'A', '\xc1': 'A', '\xc2': 'A', '\xc3': 'A', '\xc4': 'A', '\xc5': 'A', + '\xe0': 'a', '\xe1': 'a', '\xe2': 'a', '\xe3': 'a', '\xe4': 'a', '\xe5': 'a', + '\xc7': 'C', '\xe7': 'c', + '\xd0': 'D', '\xf0': 'd', + '\xc8': 'E', '\xc9': 'E', '\xca': 'E', '\xcb': 'E', + '\xe8': 'e', '\xe9': 'e', '\xea': 'e', '\xeb': 'e', + '\xcc': 'I', '\xcd': 'I', '\xce': 'I', '\xcf': 'I', + '\xec': 'i', '\xed': 'i', '\xee': 'i', '\xef': 'i', + '\xd1': 'N', '\xf1': 'n', + '\xd2': 'O', '\xd3': 'O', '\xd4': 'O', '\xd5': 'O', '\xd6': 'O', '\xd8': 'O', + '\xf2': 'o', '\xf3': 'o', '\xf4': 'o', '\xf5': 'o', '\xf6': 'o', '\xf8': 'o', + '\xd9': 'U', '\xda': 'U', '\xdb': 'U', '\xdc': 'U', + '\xf9': 'u', '\xfa': 'u', '\xfb': 'u', '\xfc': 'u', + '\xdd': 'Y', '\xfd': 'y', '\xff': 'y', + '\xc6': 'Ae', '\xe6': 'ae', + '\xde': 'Th', '\xfe': 'th', + '\xdf': 'ss', + // Latin Extended-A block. + '\u0100': 'A', '\u0102': 'A', '\u0104': 'A', + '\u0101': 'a', '\u0103': 'a', '\u0105': 'a', + '\u0106': 'C', '\u0108': 'C', '\u010a': 'C', '\u010c': 'C', + '\u0107': 'c', '\u0109': 'c', '\u010b': 'c', '\u010d': 'c', + '\u010e': 'D', '\u0110': 'D', '\u010f': 'd', '\u0111': 'd', + '\u0112': 'E', '\u0114': 'E', '\u0116': 'E', '\u0118': 'E', '\u011a': 'E', + '\u0113': 'e', '\u0115': 'e', '\u0117': 'e', '\u0119': 'e', '\u011b': 'e', + '\u011c': 'G', '\u011e': 'G', '\u0120': 'G', '\u0122': 'G', + '\u011d': 'g', '\u011f': 'g', '\u0121': 'g', '\u0123': 'g', + '\u0124': 'H', '\u0126': 'H', '\u0125': 'h', '\u0127': 'h', + '\u0128': 'I', '\u012a': 'I', '\u012c': 'I', '\u012e': 'I', '\u0130': 'I', + '\u0129': 'i', '\u012b': 'i', '\u012d': 'i', '\u012f': 'i', '\u0131': 'i', + '\u0134': 'J', '\u0135': 'j', + '\u0136': 'K', '\u0137': 'k', '\u0138': 'k', + '\u0139': 'L', '\u013b': 'L', '\u013d': 'L', '\u013f': 'L', '\u0141': 'L', + '\u013a': 'l', '\u013c': 'l', '\u013e': 'l', '\u0140': 'l', '\u0142': 'l', + '\u0143': 'N', '\u0145': 'N', '\u0147': 'N', '\u014a': 'N', + '\u0144': 'n', '\u0146': 'n', '\u0148': 'n', '\u014b': 'n', + '\u014c': 'O', '\u014e': 'O', '\u0150': 'O', + '\u014d': 'o', '\u014f': 'o', '\u0151': 'o', + '\u0154': 'R', '\u0156': 'R', '\u0158': 'R', + '\u0155': 'r', '\u0157': 'r', '\u0159': 'r', + '\u015a': 'S', '\u015c': 'S', '\u015e': 'S', '\u0160': 'S', + '\u015b': 's', '\u015d': 's', '\u015f': 's', '\u0161': 's', + '\u0162': 'T', '\u0164': 'T', '\u0166': 'T', + '\u0163': 't', '\u0165': 't', '\u0167': 't', + '\u0168': 'U', '\u016a': 'U', '\u016c': 'U', '\u016e': 'U', '\u0170': 'U', '\u0172': 'U', + '\u0169': 'u', '\u016b': 'u', '\u016d': 'u', '\u016f': 'u', '\u0171': 'u', '\u0173': 'u', + '\u0174': 'W', '\u0175': 'w', + '\u0176': 'Y', '\u0177': 'y', '\u0178': 'Y', + '\u0179': 'Z', '\u017b': 'Z', '\u017d': 'Z', + '\u017a': 'z', '\u017c': 'z', '\u017e': 'z', + '\u0132': 'IJ', '\u0133': 'ij', + '\u0152': 'Oe', '\u0153': 'oe', + '\u0149': "'n", '\u017f': 's' + }; -Script.fromASM = function(str) { - var script = new Script(); - script.chunks = []; + /** Used to map characters to HTML entities. */ + var htmlEscapes = { + '&': '&', + '<': '<', + '>': '>', + '"': '"', + "'": ''' + }; - var tokens = str.split(' '); - var i = 0; - while (i < tokens.length) { - var token = tokens[i]; - var opcode = Opcode(token); - var opcodenum = opcode.toNumber(); + /** Used to map HTML entities to characters. */ + var htmlUnescapes = { + '&': '&', + '<': '<', + '>': '>', + '"': '"', + ''': "'" + }; - if (_.isUndefined(opcodenum)) { - var buf = Buffer.from(tokens[i], 'hex'); - script.chunks.push({ - buf: buf, - len: buf.length, - opcodenum: buf.length - }); - i = i + 1; - } else if (opcodenum === Opcode.OP_PUSHDATA1 || - opcodenum === Opcode.OP_PUSHDATA2 || - opcodenum === Opcode.OP_PUSHDATA4) { - script.chunks.push({ - buf: Buffer.from(tokens[i + 2], 'hex'), - len: parseInt(tokens[i + 1]), - opcodenum: opcodenum - }); - i = i + 3; - } else { - script.chunks.push({ - opcodenum: opcodenum - }); - i = i + 1; - } - } - return script; -}; + /** Used to escape characters for inclusion in compiled string literals. */ + var stringEscapes = { + '\\': '\\', + "'": "'", + '\n': 'n', + '\r': 'r', + '\u2028': 'u2028', + '\u2029': 'u2029' + }; -Script.fromHex = function(str) { - return new Script(new buffer.Buffer(str, 'hex')); -}; + /** Built-in method references without a dependency on `root`. */ + var freeParseFloat = parseFloat, + freeParseInt = parseInt; -Script.fromString = function(str) { - if (JSUtil.isHexa(str) || str.length === 0) { - return new Script(new buffer.Buffer(str, 'hex')); - } - var script = new Script(); - script.chunks = []; + /** Detect free variable `global` from Node.js. */ + var freeGlobal = typeof global == 'object' && global && global.Object === Object && global; - var tokens = str.split(' '); - var i = 0; - while (i < tokens.length) { - var token = tokens[i]; - var opcode = Opcode(token); - var opcodenum = opcode.toNumber(); + /** Detect free variable `self`. */ + var freeSelf = typeof self == 'object' && self && self.Object === Object && self; - if (_.isUndefined(opcodenum)) { - opcodenum = parseInt(token); - if (opcodenum > 0 && opcodenum < Opcode.OP_PUSHDATA1) { - script.chunks.push({ - buf: Buffer.from(tokens[i + 1].slice(2), 'hex'), - len: opcodenum, - opcodenum: opcodenum - }); - i = i + 2; - } else { - throw new Error('Invalid script: ' + JSON.stringify(str)); - } - } else if (opcodenum === Opcode.OP_PUSHDATA1 || - opcodenum === Opcode.OP_PUSHDATA2 || - opcodenum === Opcode.OP_PUSHDATA4) { - if (tokens[i + 2].slice(0, 2) !== '0x') { - throw new Error('Pushdata data must start with 0x'); - } - script.chunks.push({ - buf: Buffer.from(tokens[i + 2].slice(2), 'hex'), - len: parseInt(tokens[i + 1]), - opcodenum: opcodenum - }); - i = i + 3; - } else { - script.chunks.push({ - opcodenum: opcodenum - }); - i = i + 1; - } - } - return script; -}; + /** Used as a reference to the global object. */ + var root = freeGlobal || freeSelf || Function('return this')(); -Script.prototype._chunkToString = function(chunk, type) { - var opcodenum = chunk.opcodenum; - var asm = (type === 'asm'); - var str = ''; - if (!chunk.buf) { - // no data chunk - if (typeof Opcode.reverseMap[opcodenum] !== 'undefined') { - if (asm) { - // A few cases where the opcode name differs from reverseMap - // aside from 1 to 16 data pushes. - if (opcodenum === 0) { - // OP_0 -> 0 - str = str + ' 0'; - } else if(opcodenum === 79) { - // OP_1NEGATE -> 1 - str = str + ' -1'; - } else { - str = str + ' ' + Opcode(opcodenum).toString(); - } - } else { - str = str + ' ' + Opcode(opcodenum).toString(); - } - } else { - var numstr = opcodenum.toString(16); - if (numstr.length % 2 !== 0) { - numstr = '0' + numstr; - } - if (asm) { - str = str + ' ' + numstr; - } else { - str = str + ' ' + '0x' + numstr; - } - } - } else { - // data chunk - if (!asm && opcodenum === Opcode.OP_PUSHDATA1 || - opcodenum === Opcode.OP_PUSHDATA2 || - opcodenum === Opcode.OP_PUSHDATA4) { - str = str + ' ' + Opcode(opcodenum).toString(); - } - if (chunk.len > 0) { - if (asm) { - str = str + ' ' + chunk.buf.toString('hex'); - } else { - str = str + ' ' + chunk.len + ' ' + '0x' + chunk.buf.toString('hex'); - } - } - } - return str; -}; + /** Detect free variable `exports`. */ + var freeExports = typeof exports == 'object' && exports && !exports.nodeType && exports; -Script.prototype.toASM = function() { - var str = ''; - for (var i = 0; i < this.chunks.length; i++) { - var chunk = this.chunks[i]; - str += this._chunkToString(chunk, 'asm'); - } + /** Detect free variable `module`. */ + var freeModule = freeExports && typeof module == 'object' && module && !module.nodeType && module; - return str.substr(1); -}; + /** Detect the popular CommonJS extension `module.exports`. */ + var moduleExports = freeModule && freeModule.exports === freeExports; -Script.prototype.toString = function() { - var str = ''; - for (var i = 0; i < this.chunks.length; i++) { - var chunk = this.chunks[i]; - str += this._chunkToString(chunk); - } + /** Detect free variable `process` from Node.js. */ + var freeProcess = moduleExports && freeGlobal.process; - return str.substr(1); -}; + /** Used to access faster Node.js helpers. */ + var nodeUtil = (function() { + try { + // Use `util.types` for Node.js 10+. + var types = freeModule && freeModule.require && freeModule.require('util').types; -Script.prototype.toHex = function() { - return this.toBuffer().toString('hex'); -}; + if (types) { + return types; + } -Script.prototype.inspect = function() { - return ''; -}; + // Legacy `process.binding('util')` for Node.js < 10. + return freeProcess && freeProcess.binding && freeProcess.binding('util'); + } catch (e) {} + }()); -// script classification methods + /* Node.js helper references. */ + var nodeIsArrayBuffer = nodeUtil && nodeUtil.isArrayBuffer, + nodeIsDate = nodeUtil && nodeUtil.isDate, + nodeIsMap = nodeUtil && nodeUtil.isMap, + nodeIsRegExp = nodeUtil && nodeUtil.isRegExp, + nodeIsSet = nodeUtil && nodeUtil.isSet, + nodeIsTypedArray = nodeUtil && nodeUtil.isTypedArray; -/** - * @returns {boolean} if this is a pay to pubkey hash output script - */ -Script.prototype.isPublicKeyHashOut = function() { - return !!(this.chunks.length === 5 && - this.chunks[0].opcodenum === Opcode.OP_DUP && - this.chunks[1].opcodenum === Opcode.OP_HASH160 && - this.chunks[2].buf && - this.chunks[2].buf.length === 20 && - this.chunks[3].opcodenum === Opcode.OP_EQUALVERIFY && - this.chunks[4].opcodenum === Opcode.OP_CHECKSIG); -}; + /*--------------------------------------------------------------------------*/ -/** - * @returns {boolean} if this is a pay to public key hash input script - */ -Script.prototype.isPublicKeyHashIn = function() { - if (this.chunks.length === 2) { - var signatureBuf = this.chunks[0].buf; - var pubkeyBuf = this.chunks[1].buf; - if (signatureBuf && - signatureBuf.length && - signatureBuf[0] === 0x30 && - pubkeyBuf && - pubkeyBuf.length - ) { - var version = pubkeyBuf[0]; - if ((version === 0x04 || - version === 0x06 || - version === 0x07) && pubkeyBuf.length === 65) { - return true; - } else if ((version === 0x03 || version === 0x02) && pubkeyBuf.length === 33) { - return true; - } + /** + * A faster alternative to `Function#apply`, this function invokes `func` + * with the `this` binding of `thisArg` and the arguments of `args`. + * + * @private + * @param {Function} func The function to invoke. + * @param {*} thisArg The `this` binding of `func`. + * @param {Array} args The arguments to invoke `func` with. + * @returns {*} Returns the result of `func`. + */ + function apply(func, thisArg, args) { + switch (args.length) { + case 0: return func.call(thisArg); + case 1: return func.call(thisArg, args[0]); + case 2: return func.call(thisArg, args[0], args[1]); + case 3: return func.call(thisArg, args[0], args[1], args[2]); } + return func.apply(thisArg, args); } - return false; -}; - -Script.prototype.getPublicKey = function() { - $.checkState(this.isPublicKeyOut(), 'Can\'t retrieve PublicKey from a non-PK output'); - return this.chunks[0].buf; -}; -Script.prototype.getPublicKeyHash = function() { - $.checkState(this.isPublicKeyHashOut(), 'Can\'t retrieve PublicKeyHash from a non-PKH output'); - return this.chunks[2].buf; -}; + /** + * A specialized version of `baseAggregator` for arrays. + * + * @private + * @param {Array} [array] The array to iterate over. + * @param {Function} setter The function to set `accumulator` values. + * @param {Function} iteratee The iteratee to transform keys. + * @param {Object} accumulator The initial aggregated object. + * @returns {Function} Returns `accumulator`. + */ + function arrayAggregator(array, setter, iteratee, accumulator) { + var index = -1, + length = array == null ? 0 : array.length; -/** - * @returns {boolean} if this is a public key output script - */ -Script.prototype.isPublicKeyOut = function() { - if (this.chunks.length === 2 && - this.chunks[0].buf && - this.chunks[0].buf.length && - this.chunks[1].opcodenum === Opcode.OP_CHECKSIG) { - var pubkeyBuf = this.chunks[0].buf; - var version = pubkeyBuf[0]; - var isVersion = false; - if ((version === 0x04 || - version === 0x06 || - version === 0x07) && pubkeyBuf.length === 65) { - isVersion = true; - } else if ((version === 0x03 || version === 0x02) && pubkeyBuf.length === 33) { - isVersion = true; + while (++index < length) { + var value = array[index]; + setter(accumulator, value, iteratee(value), array); } - if (isVersion) { - return PublicKey.isValid(pubkeyBuf); + return accumulator; + } + + /** + * A specialized version of `_.forEach` for arrays without support for + * iteratee shorthands. + * + * @private + * @param {Array} [array] The array to iterate over. + * @param {Function} iteratee The function invoked per iteration. + * @returns {Array} Returns `array`. + */ + function arrayEach(array, iteratee) { + var index = -1, + length = array == null ? 0 : array.length; + + while (++index < length) { + if (iteratee(array[index], index, array) === false) { + break; + } } + return array; } - return false; -}; -/** - * @returns {boolean} if this is a pay to public key input script - */ -Script.prototype.isPublicKeyIn = function() { - if (this.chunks.length === 1) { - var signatureBuf = this.chunks[0].buf; - if (signatureBuf && - signatureBuf.length && - signatureBuf[0] === 0x30) { - return true; + /** + * A specialized version of `_.forEachRight` for arrays without support for + * iteratee shorthands. + * + * @private + * @param {Array} [array] The array to iterate over. + * @param {Function} iteratee The function invoked per iteration. + * @returns {Array} Returns `array`. + */ + function arrayEachRight(array, iteratee) { + var length = array == null ? 0 : array.length; + + while (length--) { + if (iteratee(array[length], length, array) === false) { + break; + } } + return array; } - return false; -}; -/** - * @returns {boolean} if this is a p2sh output script - */ -Script.prototype.isScriptHashOut = function() { - var buf = this.toBuffer(); - return (buf.length === 23 && - buf[0] === Opcode.OP_HASH160 && - buf[1] === 0x14 && - buf[buf.length - 1] === Opcode.OP_EQUAL); -}; + /** + * A specialized version of `_.every` for arrays without support for + * iteratee shorthands. + * + * @private + * @param {Array} [array] The array to iterate over. + * @param {Function} predicate The function invoked per iteration. + * @returns {boolean} Returns `true` if all elements pass the predicate check, + * else `false`. + */ + function arrayEvery(array, predicate) { + var index = -1, + length = array == null ? 0 : array.length; -/** - * @returns {boolean} if this is a p2wsh output script - */ -Script.prototype.isWitnessScriptHashOut = function() { - var buf = this.toBuffer(); - return (buf.length === 34 && buf[0] === 0 && buf[1] === 32); -}; + while (++index < length) { + if (!predicate(array[index], index, array)) { + return false; + } + } + return true; + } -/** - * @returns {boolean} if this is a p2wpkh output script - */ -Script.prototype.isWitnessPublicKeyHashOut = function() { - var buf = this.toBuffer(); - return (buf.length === 22 && buf[0] === 0 && buf[1] === 20); -}; + /** + * A specialized version of `_.filter` for arrays without support for + * iteratee shorthands. + * + * @private + * @param {Array} [array] The array to iterate over. + * @param {Function} predicate The function invoked per iteration. + * @returns {Array} Returns the new filtered array. + */ + function arrayFilter(array, predicate) { + var index = -1, + length = array == null ? 0 : array.length, + resIndex = 0, + result = []; -/** - * @param {Object=} values - The return values - * @param {Number} values.version - Set with the witness version - * @param {Buffer} values.program - Set with the witness program - * @returns {boolean} if this is a p2wpkh output script - */ -Script.prototype.isWitnessProgram = function(values) { - if (!values) { - values = {}; - } - var buf = this.toBuffer(); - if (buf.length < 4 || buf.length > 42) { - return false; - } - if (buf[0] !== Opcode.OP_0 && !(buf[0] >= Opcode.OP_1 && buf[0] <= Opcode.OP_16)) { - return false; + while (++index < length) { + var value = array[index]; + if (predicate(value, index, array)) { + result[resIndex++] = value; + } + } + return result; } - if (buf.length === buf[1] + 2) { - values.version = buf[0]; - values.program = buf.slice(2, buf.length); - return true; + /** + * A specialized version of `_.includes` for arrays without support for + * specifying an index to search from. + * + * @private + * @param {Array} [array] The array to inspect. + * @param {*} target The value to search for. + * @returns {boolean} Returns `true` if `target` is found, else `false`. + */ + function arrayIncludes(array, value) { + var length = array == null ? 0 : array.length; + return !!length && baseIndexOf(array, value, 0) > -1; } - return false; -}; + /** + * This function is like `arrayIncludes` except that it accepts a comparator. + * + * @private + * @param {Array} [array] The array to inspect. + * @param {*} target The value to search for. + * @param {Function} comparator The comparator invoked per element. + * @returns {boolean} Returns `true` if `target` is found, else `false`. + */ + function arrayIncludesWith(array, value, comparator) { + var index = -1, + length = array == null ? 0 : array.length; -/** - * @returns {boolean} if this is a p2sh input script - * Note that these are frequently indistinguishable from pubkeyhashin - */ -Script.prototype.isScriptHashIn = function() { - if (this.chunks.length <= 1) { - return false; - } - var redeemChunk = this.chunks[this.chunks.length - 1]; - var redeemBuf = redeemChunk.buf; - if (!redeemBuf) { + while (++index < length) { + if (comparator(value, array[index])) { + return true; + } + } return false; } - var redeemScript; - try { - redeemScript = Script.fromBuffer(redeemBuf); - } catch (e) { - if (e instanceof errors.Script.InvalidBuffer) { - return false; + /** + * A specialized version of `_.map` for arrays without support for iteratee + * shorthands. + * + * @private + * @param {Array} [array] The array to iterate over. + * @param {Function} iteratee The function invoked per iteration. + * @returns {Array} Returns the new mapped array. + */ + function arrayMap(array, iteratee) { + var index = -1, + length = array == null ? 0 : array.length, + result = Array(length); + + while (++index < length) { + result[index] = iteratee(array[index], index, array); } - throw e; + return result; } - var type = redeemScript.classify(); - return type !== Script.types.UNKNOWN; -}; - -/** - * @returns {boolean} if this is a mutlsig output script - */ -Script.prototype.isMultisigOut = function() { - return (this.chunks.length > 3 && - Opcode.isSmallIntOp(this.chunks[0].opcodenum) && - this.chunks.slice(1, this.chunks.length - 2).every(function(obj) { - return obj.buf && BufferUtil.isBuffer(obj.buf); - }) && - Opcode.isSmallIntOp(this.chunks[this.chunks.length - 2].opcodenum) && - this.chunks[this.chunks.length - 1].opcodenum === Opcode.OP_CHECKMULTISIG); -}; - - -/** - * @returns {boolean} if this is a multisig input script - */ -Script.prototype.isMultisigIn = function() { - return this.chunks.length >= 2 && - this.chunks[0].opcodenum === 0 && - this.chunks.slice(1, this.chunks.length).every(function(obj) { - return obj.buf && - BufferUtil.isBuffer(obj.buf) && - Signature.isTxDER(obj.buf); - }); -}; -/** - * @returns {boolean} true if this is a valid standard OP_RETURN output - */ -Script.prototype.isDataOut = function() { - return this.chunks.length >= 1 && - this.chunks[0].opcodenum === Opcode.OP_RETURN && - (this.chunks.length === 1 || - (this.chunks.length === 2 && - this.chunks[1].buf && - this.chunks[1].buf.length <= Script.OP_RETURN_STANDARD_SIZE && - this.chunks[1].length === this.chunks.len)); -}; + /** + * Appends the elements of `values` to `array`. + * + * @private + * @param {Array} array The array to modify. + * @param {Array} values The values to append. + * @returns {Array} Returns `array`. + */ + function arrayPush(array, values) { + var index = -1, + length = values.length, + offset = array.length; -/** - * Retrieve the associated data for this script. - * In the case of a pay to public key hash or P2SH, return the hash. - * In the case of a standard OP_RETURN, return the data - * @returns {Buffer} - */ -Script.prototype.getData = function() { - if (this.isDataOut() || this.isScriptHashOut()) { - if (_.isUndefined(this.chunks[1])) { - return Buffer.alloc(0); - } else { - return Buffer.from(this.chunks[1].buf); + while (++index < length) { + array[offset + index] = values[index]; } + return array; } - if (this.isPublicKeyHashOut()) { - return Buffer.from(this.chunks[2].buf); - } - throw new Error('Unrecognized script type to get data from'); -}; - -/** - * @returns {boolean} if the script is only composed of data pushing - * opcodes or small int opcodes (OP_0, OP_1, ..., OP_16) - */ -Script.prototype.isPushOnly = function() { - return _.every(this.chunks, function(chunk) { - return chunk.opcodenum <= Opcode.OP_16; - }); -}; - - -Script.types = {}; -Script.types.UNKNOWN = 'Unknown'; -Script.types.PUBKEY_OUT = 'Pay to public key'; -Script.types.PUBKEY_IN = 'Spend from public key'; -Script.types.PUBKEYHASH_OUT = 'Pay to public key hash'; -Script.types.PUBKEYHASH_IN = 'Spend from public key hash'; -Script.types.SCRIPTHASH_OUT = 'Pay to script hash'; -Script.types.SCRIPTHASH_IN = 'Spend from script hash'; -Script.types.MULTISIG_OUT = 'Pay to multisig'; -Script.types.MULTISIG_IN = 'Spend from multisig'; -Script.types.DATA_OUT = 'Data push'; -Script.OP_RETURN_STANDARD_SIZE = 80; + /** + * A specialized version of `_.reduce` for arrays without support for + * iteratee shorthands. + * + * @private + * @param {Array} [array] The array to iterate over. + * @param {Function} iteratee The function invoked per iteration. + * @param {*} [accumulator] The initial value. + * @param {boolean} [initAccum] Specify using the first element of `array` as + * the initial value. + * @returns {*} Returns the accumulated value. + */ + function arrayReduce(array, iteratee, accumulator, initAccum) { + var index = -1, + length = array == null ? 0 : array.length; -/** - * @returns {object} The Script type if it is a known form, - * or Script.UNKNOWN if it isn't - */ -Script.prototype.classify = function() { - if (this._isInput) { - return this.classifyInput(); - } else if (this._isOutput) { - return this.classifyOutput(); - } else { - var outputType = this.classifyOutput(); - return outputType != Script.types.UNKNOWN ? outputType : this.classifyInput(); + if (initAccum && length) { + accumulator = array[++index]; + } + while (++index < length) { + accumulator = iteratee(accumulator, array[index], index, array); + } + return accumulator; } -}; - -Script.outputIdentifiers = {}; -Script.outputIdentifiers.PUBKEY_OUT = Script.prototype.isPublicKeyOut; -Script.outputIdentifiers.PUBKEYHASH_OUT = Script.prototype.isPublicKeyHashOut; -Script.outputIdentifiers.MULTISIG_OUT = Script.prototype.isMultisigOut; -Script.outputIdentifiers.SCRIPTHASH_OUT = Script.prototype.isScriptHashOut; -Script.outputIdentifiers.DATA_OUT = Script.prototype.isDataOut; -/** - * @returns {object} The Script type if it is a known form, - * or Script.UNKNOWN if it isn't - */ -Script.prototype.classifyOutput = function() { - for (var type in Script.outputIdentifiers) { - if (Script.outputIdentifiers[type].bind(this)()) { - return Script.types[type]; + /** + * A specialized version of `_.reduceRight` for arrays without support for + * iteratee shorthands. + * + * @private + * @param {Array} [array] The array to iterate over. + * @param {Function} iteratee The function invoked per iteration. + * @param {*} [accumulator] The initial value. + * @param {boolean} [initAccum] Specify using the last element of `array` as + * the initial value. + * @returns {*} Returns the accumulated value. + */ + function arrayReduceRight(array, iteratee, accumulator, initAccum) { + var length = array == null ? 0 : array.length; + if (initAccum && length) { + accumulator = array[--length]; + } + while (length--) { + accumulator = iteratee(accumulator, array[length], length, array); } + return accumulator; } - return Script.types.UNKNOWN; -}; -Script.inputIdentifiers = {}; -Script.inputIdentifiers.PUBKEY_IN = Script.prototype.isPublicKeyIn; -Script.inputIdentifiers.PUBKEYHASH_IN = Script.prototype.isPublicKeyHashIn; -Script.inputIdentifiers.MULTISIG_IN = Script.prototype.isMultisigIn; -Script.inputIdentifiers.SCRIPTHASH_IN = Script.prototype.isScriptHashIn; + /** + * A specialized version of `_.some` for arrays without support for iteratee + * shorthands. + * + * @private + * @param {Array} [array] The array to iterate over. + * @param {Function} predicate The function invoked per iteration. + * @returns {boolean} Returns `true` if any element passes the predicate check, + * else `false`. + */ + function arraySome(array, predicate) { + var index = -1, + length = array == null ? 0 : array.length; -/** - * @returns {object} The Script type if it is a known form, - * or Script.UNKNOWN if it isn't - */ -Script.prototype.classifyInput = function() { - for (var type in Script.inputIdentifiers) { - if (Script.inputIdentifiers[type].bind(this)()) { - return Script.types[type]; + while (++index < length) { + if (predicate(array[index], index, array)) { + return true; + } } + return false; } - return Script.types.UNKNOWN; -}; + /** + * Gets the size of an ASCII `string`. + * + * @private + * @param {string} string The string inspect. + * @returns {number} Returns the string size. + */ + var asciiSize = baseProperty('length'); -/** - * @returns {boolean} if script is one of the known types - */ -Script.prototype.isStandard = function() { - // TODO: Add BIP62 compliance - return this.classify() !== Script.types.UNKNOWN; -}; + /** + * Converts an ASCII `string` to an array. + * + * @private + * @param {string} string The string to convert. + * @returns {Array} Returns the converted array. + */ + function asciiToArray(string) { + return string.split(''); + } + /** + * Splits an ASCII `string` into an array of its words. + * + * @private + * @param {string} The string to inspect. + * @returns {Array} Returns the words of `string`. + */ + function asciiWords(string) { + return string.match(reAsciiWord) || []; + } -// Script construction methods + /** + * The base implementation of methods like `_.findKey` and `_.findLastKey`, + * without support for iteratee shorthands, which iterates over `collection` + * using `eachFunc`. + * + * @private + * @param {Array|Object} collection The collection to inspect. + * @param {Function} predicate The function invoked per iteration. + * @param {Function} eachFunc The function to iterate over `collection`. + * @returns {*} Returns the found element or its key, else `undefined`. + */ + function baseFindKey(collection, predicate, eachFunc) { + var result; + eachFunc(collection, function(value, key, collection) { + if (predicate(value, key, collection)) { + result = key; + return false; + } + }); + return result; + } -/** - * Adds a script element at the start of the script. - * @param {*} obj a string, number, Opcode, Buffer, or object to add - * @returns {Script} this script instance - */ -Script.prototype.prepend = function(obj) { - this._addByType(obj, true); - return this; -}; + /** + * The base implementation of `_.findIndex` and `_.findLastIndex` without + * support for iteratee shorthands. + * + * @private + * @param {Array} array The array to inspect. + * @param {Function} predicate The function invoked per iteration. + * @param {number} fromIndex The index to search from. + * @param {boolean} [fromRight] Specify iterating from right to left. + * @returns {number} Returns the index of the matched value, else `-1`. + */ + function baseFindIndex(array, predicate, fromIndex, fromRight) { + var length = array.length, + index = fromIndex + (fromRight ? 1 : -1); -/** - * Compares a script with another script - */ -Script.prototype.equals = function(script) { - $.checkState(script instanceof Script, 'Must provide another script'); - if (this.chunks.length !== script.chunks.length) { - return false; - } - var i; - for (i = 0; i < this.chunks.length; i++) { - if (BufferUtil.isBuffer(this.chunks[i].buf) && !BufferUtil.isBuffer(script.chunks[i].buf)) { - return false; + while ((fromRight ? index-- : ++index < length)) { + if (predicate(array[index], index, array)) { + return index; + } } - if (BufferUtil.isBuffer(this.chunks[i].buf) && !BufferUtil.equals(this.chunks[i].buf, script.chunks[i].buf)) { - return false; - } else if (this.chunks[i].opcodenum !== script.chunks[i].opcodenum) { - return false; + return -1; + } + + /** + * The base implementation of `_.indexOf` without `fromIndex` bounds checks. + * + * @private + * @param {Array} array The array to inspect. + * @param {*} value The value to search for. + * @param {number} fromIndex The index to search from. + * @returns {number} Returns the index of the matched value, else `-1`. + */ + function baseIndexOf(array, value, fromIndex) { + return value === value + ? strictIndexOf(array, value, fromIndex) + : baseFindIndex(array, baseIsNaN, fromIndex); + } + + /** + * This function is like `baseIndexOf` except that it accepts a comparator. + * + * @private + * @param {Array} array The array to inspect. + * @param {*} value The value to search for. + * @param {number} fromIndex The index to search from. + * @param {Function} comparator The comparator invoked per element. + * @returns {number} Returns the index of the matched value, else `-1`. + */ + function baseIndexOfWith(array, value, fromIndex, comparator) { + var index = fromIndex - 1, + length = array.length; + + while (++index < length) { + if (comparator(array[index], value)) { + return index; + } } + return -1; } - return true; -}; -/** - * Adds a script element to the end of the script. - * - * @param {*} obj a string, number, Opcode, Buffer, or object to add - * @returns {Script} this script instance - * - */ -Script.prototype.add = function(obj) { - this._addByType(obj, false); - return this; -}; + /** + * The base implementation of `_.isNaN` without support for number objects. + * + * @private + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is `NaN`, else `false`. + */ + function baseIsNaN(value) { + return value !== value; + } -Script.prototype._addByType = function(obj, prepend) { - if (typeof obj === 'string') { - this._addOpcode(obj, prepend); - } else if (typeof obj === 'number') { - this._addOpcode(obj, prepend); - } else if (obj instanceof Opcode) { - this._addOpcode(obj, prepend); - } else if (BufferUtil.isBuffer(obj)) { - this._addBuffer(obj, prepend); - } else if (obj instanceof Script) { - this.chunks = this.chunks.concat(obj.chunks); - } else if (typeof obj === 'object') { - this._insertAtPosition(obj, prepend); - } else { - throw new Error('Invalid script chunk'); + /** + * The base implementation of `_.mean` and `_.meanBy` without support for + * iteratee shorthands. + * + * @private + * @param {Array} array The array to iterate over. + * @param {Function} iteratee The function invoked per iteration. + * @returns {number} Returns the mean. + */ + function baseMean(array, iteratee) { + var length = array == null ? 0 : array.length; + return length ? (baseSum(array, iteratee) / length) : NAN; } -}; -Script.prototype._insertAtPosition = function(op, prepend) { - if (prepend) { - this.chunks.unshift(op); - } else { - this.chunks.push(op); + /** + * The base implementation of `_.property` without support for deep paths. + * + * @private + * @param {string} key The key of the property to get. + * @returns {Function} Returns the new accessor function. + */ + function baseProperty(key) { + return function(object) { + return object == null ? undefined : object[key]; + }; } -}; -Script.prototype._addOpcode = function(opcode, prepend) { - var op; - if (typeof opcode === 'number') { - op = opcode; - } else if (opcode instanceof Opcode) { - op = opcode.toNumber(); - } else { - op = Opcode(opcode).toNumber(); + /** + * The base implementation of `_.propertyOf` without support for deep paths. + * + * @private + * @param {Object} object The object to query. + * @returns {Function} Returns the new accessor function. + */ + function basePropertyOf(object) { + return function(key) { + return object == null ? undefined : object[key]; + }; } - this._insertAtPosition({ - opcodenum: op - }, prepend); - return this; -}; -Script.prototype._addBuffer = function(buf, prepend) { - var opcodenum; - var len = buf.length; - if (len >= 0 && len < Opcode.OP_PUSHDATA1) { - opcodenum = len; - } else if (len < Math.pow(2, 8)) { - opcodenum = Opcode.OP_PUSHDATA1; - } else if (len < Math.pow(2, 16)) { - opcodenum = Opcode.OP_PUSHDATA2; - } else if (len < Math.pow(2, 32)) { - opcodenum = Opcode.OP_PUSHDATA4; - } else { - throw new Error('You can\'t push that much data'); + /** + * The base implementation of `_.reduce` and `_.reduceRight`, without support + * for iteratee shorthands, which iterates over `collection` using `eachFunc`. + * + * @private + * @param {Array|Object} collection The collection to iterate over. + * @param {Function} iteratee The function invoked per iteration. + * @param {*} accumulator The initial value. + * @param {boolean} initAccum Specify using the first or last element of + * `collection` as the initial value. + * @param {Function} eachFunc The function to iterate over `collection`. + * @returns {*} Returns the accumulated value. + */ + function baseReduce(collection, iteratee, accumulator, initAccum, eachFunc) { + eachFunc(collection, function(value, index, collection) { + accumulator = initAccum + ? (initAccum = false, value) + : iteratee(accumulator, value, index, collection); + }); + return accumulator; } - this._insertAtPosition({ - buf: buf, - len: len, - opcodenum: opcodenum - }, prepend); - return this; -}; -Script.prototype.hasCodeseparators = function() { - for (var i = 0; i < this.chunks.length; i++) { - if (this.chunks[i].opcodenum === Opcode.OP_CODESEPARATOR) { - return true; + /** + * The base implementation of `_.sortBy` which uses `comparer` to define the + * sort order of `array` and replaces criteria objects with their corresponding + * values. + * + * @private + * @param {Array} array The array to sort. + * @param {Function} comparer The function to define sort order. + * @returns {Array} Returns `array`. + */ + function baseSortBy(array, comparer) { + var length = array.length; + + array.sort(comparer); + while (length--) { + array[length] = array[length].value; } + return array; } - return false; -}; -Script.prototype.removeCodeseparators = function() { - var chunks = []; - for (var i = 0; i < this.chunks.length; i++) { - if (this.chunks[i].opcodenum !== Opcode.OP_CODESEPARATOR) { - chunks.push(this.chunks[i]); + /** + * The base implementation of `_.sum` and `_.sumBy` without support for + * iteratee shorthands. + * + * @private + * @param {Array} array The array to iterate over. + * @param {Function} iteratee The function invoked per iteration. + * @returns {number} Returns the sum. + */ + function baseSum(array, iteratee) { + var result, + index = -1, + length = array.length; + + while (++index < length) { + var current = iteratee(array[index]); + if (current !== undefined) { + result = result === undefined ? current : (result + current); + } } + return result; } - this.chunks = chunks; - return this; -}; -// high level script builder methods + /** + * The base implementation of `_.times` without support for iteratee shorthands + * or max array length checks. + * + * @private + * @param {number} n The number of times to invoke `iteratee`. + * @param {Function} iteratee The function invoked per iteration. + * @returns {Array} Returns the array of results. + */ + function baseTimes(n, iteratee) { + var index = -1, + result = Array(n); -/** - * @returns {Script} a new Multisig output script for given public keys, - * requiring m of those public keys to spend - * @param {PublicKey[]} publicKeys - list of all public keys controlling the output - * @param {number} threshold - amount of required signatures to spend the output - * @param {Object=} opts - Several options: - * - noSorting: defaults to false, if true, don't sort the given - * public keys before creating the script - */ -Script.buildMultisigOut = function(publicKeys, threshold, opts) { - $.checkArgument(threshold <= publicKeys.length, - 'Number of required signatures must be less than or equal to the number of public keys'); - opts = opts || {}; - var script = new Script(); - script.add(Opcode.smallInt(threshold)); - publicKeys = _.map(publicKeys, PublicKey); - var sorted = publicKeys; - if (!opts.noSorting) { - sorted = _.sortBy(publicKeys, function(publicKey) { - return publicKey.toString('hex'); - }); - } - for (var i = 0; i < sorted.length; i++) { - var publicKey = sorted[i]; - script.add(publicKey.toBuffer()); + while (++index < n) { + result[index] = iteratee(index); + } + return result; } - script.add(Opcode.smallInt(publicKeys.length)); - script.add(Opcode.OP_CHECKMULTISIG); - return script; -}; -Script.buildWitnessMultisigOutFromScript = function(script) { - if (script instanceof Script) { - var s = new Script(); - s.add(Opcode.OP_0); - s.add(Hash.sha256(script.toBuffer())); - return s; - } else { - throw new TypeError('First argument is expected to be a p2sh script'); + /** + * The base implementation of `_.toPairs` and `_.toPairsIn` which creates an array + * of key-value pairs for `object` corresponding to the property names of `props`. + * + * @private + * @param {Object} object The object to query. + * @param {Array} props The property names to get values for. + * @returns {Object} Returns the key-value pairs. + */ + function baseToPairs(object, props) { + return arrayMap(props, function(key) { + return [key, object[key]]; + }); } -}; -/** - * A new Multisig input script for the given public keys, requiring m of those public keys to spend - * - * @param {PublicKey[]} pubkeys list of all public keys controlling the output - * @param {number} threshold amount of required signatures to spend the output - * @param {Array} signatures and array of signature buffers to append to the script - * @param {Object=} opts - * @param {boolean=} opts.noSorting don't sort the given public keys before creating the script (false by default) - * @param {Script=} opts.cachedMultisig don't recalculate the redeemScript - * - * @returns {Script} - */ -Script.buildMultisigIn = function(pubkeys, threshold, signatures, opts) { - $.checkArgument(_.isArray(pubkeys)); - $.checkArgument(_.isNumber(threshold)); - $.checkArgument(_.isArray(signatures)); - opts = opts || {}; - var s = new Script(); - s.add(Opcode.OP_0); - _.each(signatures, function(signature) { - $.checkArgument(BufferUtil.isBuffer(signature), 'Signatures must be an array of Buffers'); - // TODO: allow signatures to be an array of Signature objects - s.add(signature); - }); - return s; -}; + /** + * The base implementation of `_.unary` without support for storing metadata. + * + * @private + * @param {Function} func The function to cap arguments for. + * @returns {Function} Returns the new capped function. + */ + function baseUnary(func) { + return function(value) { + return func(value); + }; + } -/** - * A new P2SH Multisig input script for the given public keys, requiring m of those public keys to spend - * - * @param {PublicKey[]} pubkeys list of all public keys controlling the output - * @param {number} threshold amount of required signatures to spend the output - * @param {Array} signatures and array of signature buffers to append to the script - * @param {Object=} opts - * @param {boolean=} opts.noSorting don't sort the given public keys before creating the script (false by default) - * @param {Script=} opts.cachedMultisig don't recalculate the redeemScript - * - * @returns {Script} - */ -Script.buildP2SHMultisigIn = function(pubkeys, threshold, signatures, opts) { - $.checkArgument(_.isArray(pubkeys)); - $.checkArgument(_.isNumber(threshold)); - $.checkArgument(_.isArray(signatures)); - opts = opts || {}; - var s = new Script(); - s.add(Opcode.OP_0); - _.each(signatures, function(signature) { - $.checkArgument(BufferUtil.isBuffer(signature), 'Signatures must be an array of Buffers'); - // TODO: allow signatures to be an array of Signature objects - s.add(signature); - }); - s.add((opts.cachedMultisig || Script.buildMultisigOut(pubkeys, threshold, opts)).toBuffer()); - return s; -}; + /** + * The base implementation of `_.values` and `_.valuesIn` which creates an + * array of `object` property values corresponding to the property names + * of `props`. + * + * @private + * @param {Object} object The object to query. + * @param {Array} props The property names to get values for. + * @returns {Object} Returns the array of property values. + */ + function baseValues(object, props) { + return arrayMap(props, function(key) { + return object[key]; + }); + } -/** - * @returns {Script} a new pay to public key hash output for the given - * address or public key - * @param {(Address|PublicKey)} to - destination address or public key - */ -Script.buildPublicKeyHashOut = function(to) { - $.checkArgument(!_.isUndefined(to)); - $.checkArgument(to instanceof PublicKey || to instanceof Address || _.isString(to)); - if (to instanceof PublicKey) { - to = to.toAddress(); - } else if (_.isString(to)) { - to = new Address(to); + /** + * Checks if a `cache` value for `key` exists. + * + * @private + * @param {Object} cache The cache to query. + * @param {string} key The key of the entry to check. + * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`. + */ + function cacheHas(cache, key) { + return cache.has(key); } - var s = new Script(); - s.add(Opcode.OP_DUP) - .add(Opcode.OP_HASH160) - .add(to.hashBuffer) - .add(Opcode.OP_EQUALVERIFY) - .add(Opcode.OP_CHECKSIG); - s._network = to.network; - return s; -}; -/** - * @returns {Script} a new pay to public key output for the given - * public key - */ -Script.buildPublicKeyOut = function(pubkey) { - $.checkArgument(pubkey instanceof PublicKey); - var s = new Script(); - s.add(pubkey.toBuffer()) - .add(Opcode.OP_CHECKSIG); - return s; -}; + /** + * Used by `_.trim` and `_.trimStart` to get the index of the first string symbol + * that is not found in the character symbols. + * + * @private + * @param {Array} strSymbols The string symbols to inspect. + * @param {Array} chrSymbols The character symbols to find. + * @returns {number} Returns the index of the first unmatched string symbol. + */ + function charsStartIndex(strSymbols, chrSymbols) { + var index = -1, + length = strSymbols.length; -/** - * @returns {Script} a new OP_RETURN script with data - * @param {(string|Buffer)} data - the data to embed in the output - * @param {(string)} encoding - the type of encoding of the string - */ -Script.buildDataOut = function(data, encoding) { - $.checkArgument(_.isUndefined(data) || _.isString(data) || BufferUtil.isBuffer(data)); - if (_.isString(data)) { - data = Buffer.from(data, encoding); - } - var s = new Script(); - s.add(Opcode.OP_RETURN); - if (!_.isUndefined(data)) { - s.add(data); + while (++index < length && baseIndexOf(chrSymbols, strSymbols[index], 0) > -1) {} + return index; } - return s; -}; -/** - * @param {Script|Address} script - the redeemScript for the new p2sh output. - * It can also be a p2sh address - * @returns {Script} new pay to script hash script for given script - */ -Script.buildScriptHashOut = function(script) { - $.checkArgument(script instanceof Script || - (script instanceof Address && script.isPayToScriptHash())); - var s = new Script(); - s.add(Opcode.OP_HASH160) - .add(script instanceof Address ? script.hashBuffer : Hash.sha256ripemd160(script.toBuffer())) - .add(Opcode.OP_EQUAL); - - s._network = script._network || script.network; - return s; -}; + /** + * Used by `_.trim` and `_.trimEnd` to get the index of the last string symbol + * that is not found in the character symbols. + * + * @private + * @param {Array} strSymbols The string symbols to inspect. + * @param {Array} chrSymbols The character symbols to find. + * @returns {number} Returns the index of the last unmatched string symbol. + */ + function charsEndIndex(strSymbols, chrSymbols) { + var index = strSymbols.length; -/** - * Builds a scriptSig (a script for an input) that signs a public key output script. - * - * @param {Signature|Buffer} signature - a Signature object, or the signature in DER canonical encoding - * @param {number=} sigtype - the type of the signature (defaults to SIGHASH_ALL) - */ -Script.buildPublicKeyIn = function(signature, sigtype) { - $.checkArgument(signature instanceof Signature || BufferUtil.isBuffer(signature)); - $.checkArgument(_.isUndefined(sigtype) || _.isNumber(sigtype)); - if (signature instanceof Signature) { - signature = signature.toBuffer(); + while (index-- && baseIndexOf(chrSymbols, strSymbols[index], 0) > -1) {} + return index; } - var script = new Script(); - script.add(BufferUtil.concat([ - signature, - BufferUtil.integerAsSingleByteBuffer(sigtype || Signature.SIGHASH_ALL) - ])); - return script; -}; -/** - * Builds a scriptSig (a script for an input) that signs a public key hash - * output script. - * - * @param {Buffer|string|PublicKey} publicKey - * @param {Signature|Buffer} signature - a Signature object, or the signature in DER canonical encoding - * @param {number=} sigtype - the type of the signature (defaults to SIGHASH_ALL) - */ -Script.buildPublicKeyHashIn = function(publicKey, signature, sigtype) { - $.checkArgument(signature instanceof Signature || BufferUtil.isBuffer(signature)); - $.checkArgument(_.isUndefined(sigtype) || _.isNumber(sigtype)); - if (signature instanceof Signature) { - signature = signature.toBuffer(); + /** + * Gets the number of `placeholder` occurrences in `array`. + * + * @private + * @param {Array} array The array to inspect. + * @param {*} placeholder The placeholder to search for. + * @returns {number} Returns the placeholder count. + */ + function countHolders(array, placeholder) { + var length = array.length, + result = 0; + + while (length--) { + if (array[length] === placeholder) { + ++result; + } + } + return result; } - var script = new Script() - .add(BufferUtil.concat([ - signature, - BufferUtil.integerAsSingleByteBuffer(sigtype || Signature.SIGHASH_ALL) - ])) - .add(new PublicKey(publicKey).toBuffer()); - return script; -}; -/** - * @returns {Script} an empty script - */ -Script.empty = function() { - return new Script(); -}; + /** + * Used by `_.deburr` to convert Latin-1 Supplement and Latin Extended-A + * letters to basic Latin letters. + * + * @private + * @param {string} letter The matched letter to deburr. + * @returns {string} Returns the deburred letter. + */ + var deburrLetter = basePropertyOf(deburredLetters); -/** - * @returns {Script} a new pay to script hash script that pays to this script - */ -Script.prototype.toScriptHashOut = function() { - return Script.buildScriptHashOut(this); -}; + /** + * Used by `_.escape` to convert characters to HTML entities. + * + * @private + * @param {string} chr The matched character to escape. + * @returns {string} Returns the escaped character. + */ + var escapeHtmlChar = basePropertyOf(htmlEscapes); -/** - * @return {Script} an output script built from the address - */ -Script.fromAddress = function(address) { - address = Address(address); - if (address.isPayToScriptHash()) { - return Script.buildScriptHashOut(address); - } else if (address.isPayToPublicKeyHash()) { - return Script.buildPublicKeyHashOut(address); + /** + * Used by `_.template` to escape characters for inclusion in compiled string literals. + * + * @private + * @param {string} chr The matched character to escape. + * @returns {string} Returns the escaped character. + */ + function escapeStringChar(chr) { + return '\\' + stringEscapes[chr]; } - throw new errors.Script.UnrecognizedAddress(address); -}; -/** - * Will return the associated address information object - * @return {Address|boolean} - */ -Script.prototype.getAddressInfo = function(opts) { - if (this._isInput) { - return this._getInputAddressInfo(); - } else if (this._isOutput) { - return this._getOutputAddressInfo(); - } else { - var info = this._getOutputAddressInfo(); - if (!info) { - return this._getInputAddressInfo(); - } - return info; + /** + * Gets the value at `key` of `object`. + * + * @private + * @param {Object} [object] The object to query. + * @param {string} key The key of the property to get. + * @returns {*} Returns the property value. + */ + function getValue(object, key) { + return object == null ? undefined : object[key]; } -}; -/** - * Will return the associated output scriptPubKey address information object - * @return {Address|boolean} - * @private - */ -Script.prototype._getOutputAddressInfo = function() { - var info = {}; - if (this.isScriptHashOut()) { - info.hashBuffer = this.getData(); - info.type = Address.PayToScriptHash; - } else if (this.isPublicKeyHashOut()) { - info.hashBuffer = this.getData(); - info.type = Address.PayToPublicKeyHash; - } else { - return false; + /** + * Checks if `string` contains Unicode symbols. + * + * @private + * @param {string} string The string to inspect. + * @returns {boolean} Returns `true` if a symbol is found, else `false`. + */ + function hasUnicode(string) { + return reHasUnicode.test(string); } - return info; -}; -/** - * Will return the associated input scriptSig address information object - * @return {Address|boolean} - * @private - */ -Script.prototype._getInputAddressInfo = function() { - var info = {}; - if (this.isPublicKeyHashIn()) { - // hash the publickey found in the scriptSig - info.hashBuffer = Hash.sha256ripemd160(this.chunks[1].buf); - info.type = Address.PayToPublicKeyHash; - } else if (this.isScriptHashIn()) { - // hash the redeemscript found at the end of the scriptSig - info.hashBuffer = Hash.sha256ripemd160(this.chunks[this.chunks.length - 1].buf); - info.type = Address.PayToScriptHash; - } else { - return false; + /** + * Checks if `string` contains a word composed of Unicode symbols. + * + * @private + * @param {string} string The string to inspect. + * @returns {boolean} Returns `true` if a word is found, else `false`. + */ + function hasUnicodeWord(string) { + return reHasUnicodeWord.test(string); } - return info; -}; -/** - * @param {Network=} network - * @return {Address|boolean} the associated address for this script if possible, or false - */ -Script.prototype.toAddress = function(network) { - var info = this.getAddressInfo(); - if (!info) { - return false; - } - info.network = Networks.get(network) || this._network || Networks.defaultNetwork; - return new Address(info); -}; + /** + * Converts `iterator` to an array. + * + * @private + * @param {Object} iterator The iterator to convert. + * @returns {Array} Returns the converted array. + */ + function iteratorToArray(iterator) { + var data, + result = []; -/** - * Analogous to bitcoind's FindAndDelete. Find and delete equivalent chunks, - * typically used with push data chunks. Note that this will find and delete - * not just the same data, but the same data with the same push data op as - * produced by default. i.e., if a pushdata in a tx does not use the minimal - * pushdata op, then when you try to remove the data it is pushing, it will not - * be removed, because they do not use the same pushdata op. - */ -Script.prototype.findAndDelete = function(script) { - var buf = script.toBuffer(); - var hex = buf.toString('hex'); - for (var i = 0; i < this.chunks.length; i++) { - var script2 = Script({ - chunks: [this.chunks[i]] - }); - var buf2 = script2.toBuffer(); - var hex2 = buf2.toString('hex'); - if (hex === hex2) { - this.chunks.splice(i, 1); + while (!(data = iterator.next()).done) { + result.push(data.value); } + return result; } - return this; -}; -/** - * Comes from bitcoind's script interpreter CheckMinimalPush function - * @returns {boolean} if the chunk {i} is the smallest way to push that particular data. - */ -Script.prototype.checkMinimalPush = function(i) { - var chunk = this.chunks[i]; - var buf = chunk.buf; - var opcodenum = chunk.opcodenum; - if (!buf) { - return true; - } - if (buf.length === 0) { - // Could have used OP_0. - return opcodenum === Opcode.OP_0; - } else if (buf.length === 1 && buf[0] >= 1 && buf[0] <= 16) { - // Could have used OP_1 .. OP_16. - return opcodenum === Opcode.OP_1 + (buf[0] - 1); - } else if (buf.length === 1 && buf[0] === 0x81) { - // Could have used OP_1NEGATE - return opcodenum === Opcode.OP_1NEGATE; - } else if (buf.length <= 75) { - // Could have used a direct push (opcode indicating number of bytes pushed + those bytes). - return opcodenum === buf.length; - } else if (buf.length <= 255) { - // Could have used OP_PUSHDATA. - return opcodenum === Opcode.OP_PUSHDATA1; - } else if (buf.length <= 65535) { - // Could have used OP_PUSHDATA2. - return opcodenum === Opcode.OP_PUSHDATA2; + /** + * Converts `map` to its key-value pairs. + * + * @private + * @param {Object} map The map to convert. + * @returns {Array} Returns the key-value pairs. + */ + function mapToArray(map) { + var index = -1, + result = Array(map.size); + + map.forEach(function(value, key) { + result[++index] = [key, value]; + }); + return result; } - return true; -}; -/** - * Comes from bitcoind's script DecodeOP_N function - * @param {number} opcode - * @returns {number} numeric value in range of 0 to 16 - */ -Script.prototype._decodeOP_N = function(opcode) { - if (opcode === Opcode.OP_0) { - return 0; - } else if (opcode >= Opcode.OP_1 && opcode <= Opcode.OP_16) { - return opcode - (Opcode.OP_1 - 1); - } else { - throw new Error('Invalid opcode: ' + JSON.stringify(opcode)); + /** + * Creates a unary function that invokes `func` with its argument transformed. + * + * @private + * @param {Function} func The function to wrap. + * @param {Function} transform The argument transform. + * @returns {Function} Returns the new function. + */ + function overArg(func, transform) { + return function(arg) { + return func(transform(arg)); + }; } -}; -/** - * Comes from bitcoind's script GetSigOpCount(boolean) function - * @param {boolean} use current (true) or pre-version-0.6 (false) logic - * @returns {number} number of signature operations required by this script - */ -Script.prototype.getSignatureOperationsCount = function(accurate) { - accurate = (_.isUndefined(accurate) ? true : accurate); - var self = this; - var n = 0; - var lastOpcode = Opcode.OP_INVALIDOPCODE; - _.each(self.chunks, function getChunk(chunk) { - var opcode = chunk.opcodenum; - if (opcode == Opcode.OP_CHECKSIG || opcode == Opcode.OP_CHECKSIGVERIFY) { - n++; - } else if (opcode == Opcode.OP_CHECKMULTISIG || opcode == Opcode.OP_CHECKMULTISIGVERIFY) { - if (accurate && lastOpcode >= Opcode.OP_1 && lastOpcode <= Opcode.OP_16) { - n += self._decodeOP_N(lastOpcode); - } else { - n += 20; + /** + * Replaces all `placeholder` elements in `array` with an internal placeholder + * and returns an array of their indexes. + * + * @private + * @param {Array} array The array to modify. + * @param {*} placeholder The placeholder to replace. + * @returns {Array} Returns the new array of placeholder indexes. + */ + function replaceHolders(array, placeholder) { + var index = -1, + length = array.length, + resIndex = 0, + result = []; + + while (++index < length) { + var value = array[index]; + if (value === placeholder || value === PLACEHOLDER) { + array[index] = PLACEHOLDER; + result[resIndex++] = index; } } - lastOpcode = opcode; - }); - return n; -}; - -module.exports = Script; + return result; + } -}).call(this,require("buffer").Buffer) -},{"../address":164,"../crypto/hash":171,"../crypto/signature":174,"../encoding/bufferreader":177,"../encoding/bufferwriter":178,"../errors":180,"../networks":184,"../opcode":185,"../publickey":187,"../util/buffer":206,"../util/js":207,"../util/preconditions":208,"buffer":52,"lodash":245}],191:[function(require,module,exports){ -module.exports = require('./transaction'); + /** + * Converts `set` to an array of its values. + * + * @private + * @param {Object} set The set to convert. + * @returns {Array} Returns the values. + */ + function setToArray(set) { + var index = -1, + result = Array(set.size); -module.exports.Input = require('./input'); -module.exports.Output = require('./output'); -module.exports.UnspentOutput = require('./unspentoutput'); -module.exports.Signature = require('./signature'); -module.exports.Sighash = require('./sighash'); -module.exports.SighashWitness = require('./sighashwitness'); + set.forEach(function(value) { + result[++index] = value; + }); + return result; + } -},{"./input":192,"./output":198,"./sighash":199,"./sighashwitness":200,"./signature":201,"./transaction":202,"./unspentoutput":203}],192:[function(require,module,exports){ -module.exports = require('./input'); + /** + * Converts `set` to its value-value pairs. + * + * @private + * @param {Object} set The set to convert. + * @returns {Array} Returns the value-value pairs. + */ + function setToPairs(set) { + var index = -1, + result = Array(set.size); -module.exports.PublicKey = require('./publickey'); -module.exports.PublicKeyHash = require('./publickeyhash'); -module.exports.MultiSig = require('./multisig.js'); -module.exports.MultiSigScriptHash = require('./multisigscripthash.js'); + set.forEach(function(value) { + result[++index] = [value, value]; + }); + return result; + } -},{"./input":193,"./multisig.js":194,"./multisigscripthash.js":195,"./publickey":196,"./publickeyhash":197}],193:[function(require,module,exports){ -'use strict'; + /** + * A specialized version of `_.indexOf` which performs strict equality + * comparisons of values, i.e. `===`. + * + * @private + * @param {Array} array The array to inspect. + * @param {*} value The value to search for. + * @param {number} fromIndex The index to search from. + * @returns {number} Returns the index of the matched value, else `-1`. + */ + function strictIndexOf(array, value, fromIndex) { + var index = fromIndex - 1, + length = array.length; -var _ = require('lodash'); -var $ = require('../../util/preconditions'); -var errors = require('../../errors'); -var BufferWriter = require('../../encoding/bufferwriter'); -var buffer = require('buffer'); -var BufferUtil = require('../../util/buffer'); -var JSUtil = require('../../util/js'); -var Script = require('../../script'); -var Sighash = require('../sighash'); -var Output = require('../output'); + while (++index < length) { + if (array[index] === value) { + return index; + } + } + return -1; + } -var MAXINT = 0xffffffff; // Math.pow(2, 32) - 1; -var DEFAULT_RBF_SEQNUMBER = MAXINT - 2; -var DEFAULT_SEQNUMBER = MAXINT; -var DEFAULT_LOCKTIME_SEQNUMBER = MAXINT - 1; + /** + * A specialized version of `_.lastIndexOf` which performs strict equality + * comparisons of values, i.e. `===`. + * + * @private + * @param {Array} array The array to inspect. + * @param {*} value The value to search for. + * @param {number} fromIndex The index to search from. + * @returns {number} Returns the index of the matched value, else `-1`. + */ + function strictLastIndexOf(array, value, fromIndex) { + var index = fromIndex + 1; + while (index--) { + if (array[index] === value) { + return index; + } + } + return index; + } -function Input(params) { - if (!(this instanceof Input)) { - return new Input(params); + /** + * Gets the number of symbols in `string`. + * + * @private + * @param {string} string The string to inspect. + * @returns {number} Returns the string size. + */ + function stringSize(string) { + return hasUnicode(string) + ? unicodeSize(string) + : asciiSize(string); } - if (params) { - return this._fromObject(params); + + /** + * Converts `string` to an array. + * + * @private + * @param {string} string The string to convert. + * @returns {Array} Returns the converted array. + */ + function stringToArray(string) { + return hasUnicode(string) + ? unicodeToArray(string) + : asciiToArray(string); } -} -Input.MAXINT = MAXINT; -Input.DEFAULT_SEQNUMBER = DEFAULT_SEQNUMBER; -Input.DEFAULT_LOCKTIME_SEQNUMBER = DEFAULT_LOCKTIME_SEQNUMBER; -Input.DEFAULT_RBF_SEQNUMBER = DEFAULT_RBF_SEQNUMBER; + /** + * Used by `_.unescape` to convert HTML entities to characters. + * + * @private + * @param {string} chr The matched character to unescape. + * @returns {string} Returns the unescaped character. + */ + var unescapeHtmlChar = basePropertyOf(htmlUnescapes); -Object.defineProperty(Input.prototype, 'script', { - configurable: false, - enumerable: true, - get: function() { - if (this.isNull()) { - return null; - } - if (!this._script) { - this._script = new Script(this._scriptBuffer); - this._script._isInput = true; + /** + * Gets the size of a Unicode `string`. + * + * @private + * @param {string} string The string inspect. + * @returns {number} Returns the string size. + */ + function unicodeSize(string) { + var result = reUnicode.lastIndex = 0; + while (reUnicode.test(string)) { + ++result; } - return this._script; + return result; } -}); - -Input.fromObject = function(obj) { - $.checkArgument(_.isObject(obj)); - var input = new Input(); - return input._fromObject(obj); -}; -Input.prototype._fromObject = function(params) { - var prevTxId; - if (_.isString(params.prevTxId) && JSUtil.isHexa(params.prevTxId)) { - prevTxId = new buffer.Buffer(params.prevTxId, 'hex'); - } else { - prevTxId = params.prevTxId; + /** + * Converts a Unicode `string` to an array. + * + * @private + * @param {string} string The string to convert. + * @returns {Array} Returns the converted array. + */ + function unicodeToArray(string) { + return string.match(reUnicode) || []; } - this.witnesses = []; - this.output = params.output ? - (params.output instanceof Output ? params.output : new Output(params.output)) : undefined; - this.prevTxId = prevTxId || params.txidbuf; - this.outputIndex = _.isUndefined(params.outputIndex) ? params.txoutnum : params.outputIndex; - this.sequenceNumber = _.isUndefined(params.sequenceNumber) ? - (_.isUndefined(params.seqnum) ? DEFAULT_SEQNUMBER : params.seqnum) : params.sequenceNumber; - if (_.isUndefined(params.script) && _.isUndefined(params.scriptBuffer)) { - throw new errors.Transaction.Input.MissingScript(); + + /** + * Splits a Unicode `string` into an array of its words. + * + * @private + * @param {string} The string to inspect. + * @returns {Array} Returns the words of `string`. + */ + function unicodeWords(string) { + return string.match(reUnicodeWord) || []; } - this.setScript(params.scriptBuffer || params.script); - return this; -}; -Input.prototype.toObject = Input.prototype.toJSON = function toObject() { - var obj = { - prevTxId: this.prevTxId.toString('hex'), - outputIndex: this.outputIndex, - sequenceNumber: this.sequenceNumber, - script: this._scriptBuffer.toString('hex'), - }; - // add human readable form if input contains valid script - if (this.script) { - obj.scriptString = this.script.toString(); - } - if (this.output) { - obj.output = this.output.toObject(); - } - return obj; -}; + /*--------------------------------------------------------------------------*/ + + /** + * Create a new pristine `lodash` function using the `context` object. + * + * @static + * @memberOf _ + * @since 1.1.0 + * @category Util + * @param {Object} [context=root] The context object. + * @returns {Function} Returns a new `lodash` function. + * @example + * + * _.mixin({ 'foo': _.constant('foo') }); + * + * var lodash = _.runInContext(); + * lodash.mixin({ 'bar': lodash.constant('bar') }); + * + * _.isFunction(_.foo); + * // => true + * _.isFunction(_.bar); + * // => false + * + * lodash.isFunction(lodash.foo); + * // => false + * lodash.isFunction(lodash.bar); + * // => true + * + * // Create a suped-up `defer` in Node.js. + * var defer = _.runInContext({ 'setTimeout': setImmediate }).defer; + */ + var runInContext = (function runInContext(context) { + context = context == null ? root : _.defaults(root.Object(), context, _.pick(root, contextProps)); + + /** Built-in constructor references. */ + var Array = context.Array, + Date = context.Date, + Error = context.Error, + Function = context.Function, + Math = context.Math, + Object = context.Object, + RegExp = context.RegExp, + String = context.String, + TypeError = context.TypeError; -Input.fromBufferReader = function(br) { - var input = new Input(); - input.prevTxId = br.readReverse(32); - input.outputIndex = br.readUInt32LE(); - input._scriptBuffer = br.readVarLengthBuffer(); - input.sequenceNumber = br.readUInt32LE(); - // TODO: return different classes according to which input it is - // e.g: CoinbaseInput, PublicKeyHashInput, MultiSigScriptHashInput, etc. - return input; -}; + /** Used for built-in method references. */ + var arrayProto = Array.prototype, + funcProto = Function.prototype, + objectProto = Object.prototype; -Input.prototype.toBufferWriter = function(writer) { - if (!writer) { - writer = new BufferWriter(); - } - writer.writeReverse(this.prevTxId); - writer.writeUInt32LE(this.outputIndex); - var script = this._scriptBuffer; - writer.writeVarintNum(script.length); - writer.write(script); - writer.writeUInt32LE(this.sequenceNumber); - return writer; -}; + /** Used to detect overreaching core-js shims. */ + var coreJsData = context['__core-js_shared__']; -Input.prototype.setScript = function(script) { - this._script = null; - if (script instanceof Script) { - this._script = script; - this._script._isInput = true; - this._scriptBuffer = script.toBuffer(); - } else if (JSUtil.isHexa(script)) { - // hex string script - this._scriptBuffer = new buffer.Buffer(script, 'hex'); - } else if (_.isString(script)) { - // human readable string script - this._script = new Script(script); - this._script._isInput = true; - this._scriptBuffer = this._script.toBuffer(); - } else if (BufferUtil.isBuffer(script)) { - // buffer script - this._scriptBuffer = new buffer.Buffer(script); - } else { - throw new TypeError('Invalid argument type: script'); - } - return this; -}; + /** Used to resolve the decompiled source of functions. */ + var funcToString = funcProto.toString; -/** - * Retrieve signatures for the provided PrivateKey. - * - * @param {Transaction} transaction - the transaction to be signed - * @param {PrivateKey} privateKey - the private key to use when signing - * @param {number} inputIndex - the index of this input in the provided transaction - * @param {number} sigType - defaults to Signature.SIGHASH_ALL - * @param {Buffer} addressHash - if provided, don't calculate the hash of the - * public key associated with the private key provided - * @abstract - */ -Input.prototype.getSignatures = function() { - throw new errors.AbstractMethodInvoked( - 'Trying to sign unsupported output type (only P2PKH and P2SH multisig inputs are supported)' + - ' for input: ' + JSON.stringify(this) - ); -}; + /** Used to check objects for own properties. */ + var hasOwnProperty = objectProto.hasOwnProperty; -Input.prototype.getSatoshisBuffer = function() { - $.checkState(this.output instanceof Output); - $.checkState(this.output._satoshisBN); - return new BufferWriter().writeUInt64LEBN(this.output._satoshisBN).toBuffer(); -}; + /** Used to generate unique IDs. */ + var idCounter = 0; + /** Used to detect methods masquerading as native. */ + var maskSrcKey = (function() { + var uid = /[^.]+$/.exec(coreJsData && coreJsData.keys && coreJsData.keys.IE_PROTO || ''); + return uid ? ('Symbol(src)_1.' + uid) : ''; + }()); -Input.prototype.isFullySigned = function() { - throw new errors.AbstractMethodInvoked('Input#isFullySigned'); -}; + /** + * Used to resolve the + * [`toStringTag`](http://ecma-international.org/ecma-262/7.0/#sec-object.prototype.tostring) + * of values. + */ + var nativeObjectToString = objectProto.toString; -Input.prototype.isFinal = function() { - return this.sequenceNumber !== 4294967295; -}; + /** Used to infer the `Object` constructor. */ + var objectCtorString = funcToString.call(Object); -Input.prototype.addSignature = function() { - throw new errors.AbstractMethodInvoked('Input#addSignature'); -}; + /** Used to restore the original `_` reference in `_.noConflict`. */ + var oldDash = root._; -Input.prototype.clearSignatures = function() { - throw new errors.AbstractMethodInvoked('Input#clearSignatures'); -}; + /** Used to detect if a method is native. */ + var reIsNative = RegExp('^' + + funcToString.call(hasOwnProperty).replace(reRegExpChar, '\\$&') + .replace(/hasOwnProperty|(function).*?(?=\\\()| for .+?(?=\\\])/g, '$1.*?') + '$' + ); -Input.prototype.hasWitnesses = function() { - if (this.witnesses && this.witnesses.length > 0) { - return true; - } - return false; -}; + /** Built-in value references. */ + var Buffer = moduleExports ? context.Buffer : undefined, + Symbol = context.Symbol, + Uint8Array = context.Uint8Array, + allocUnsafe = Buffer ? Buffer.allocUnsafe : undefined, + getPrototype = overArg(Object.getPrototypeOf, Object), + objectCreate = Object.create, + propertyIsEnumerable = objectProto.propertyIsEnumerable, + splice = arrayProto.splice, + spreadableSymbol = Symbol ? Symbol.isConcatSpreadable : undefined, + symIterator = Symbol ? Symbol.iterator : undefined, + symToStringTag = Symbol ? Symbol.toStringTag : undefined; -Input.prototype.getWitnesses = function() { - return this.witnesses; -}; + var defineProperty = (function() { + try { + var func = getNative(Object, 'defineProperty'); + func({}, '', {}); + return func; + } catch (e) {} + }()); -Input.prototype.setWitnesses = function(witnesses) { - this.witnesses = witnesses; -}; + /** Mocked built-ins. */ + var ctxClearTimeout = context.clearTimeout !== root.clearTimeout && context.clearTimeout, + ctxNow = Date && Date.now !== root.Date.now && Date.now, + ctxSetTimeout = context.setTimeout !== root.setTimeout && context.setTimeout; -Input.prototype.isValidSignature = function(transaction, signature) { - // FIXME: Refactor signature so this is not necessary - signature.signature.nhashtype = signature.sigtype; - return Sighash.verify( - transaction, - signature.signature, - signature.publicKey, - signature.inputIndex, - this.output.script - ); -}; + /* Built-in method references for those with the same name as other `lodash` methods. */ + var nativeCeil = Math.ceil, + nativeFloor = Math.floor, + nativeGetSymbols = Object.getOwnPropertySymbols, + nativeIsBuffer = Buffer ? Buffer.isBuffer : undefined, + nativeIsFinite = context.isFinite, + nativeJoin = arrayProto.join, + nativeKeys = overArg(Object.keys, Object), + nativeMax = Math.max, + nativeMin = Math.min, + nativeNow = Date.now, + nativeParseInt = context.parseInt, + nativeRandom = Math.random, + nativeReverse = arrayProto.reverse; -/** - * @returns true if this is a coinbase input (represents no input) - */ -Input.prototype.isNull = function() { - return this.prevTxId.toString('hex') === '0000000000000000000000000000000000000000000000000000000000000000' && - this.outputIndex === 0xffffffff; -}; + /* Built-in method references that are verified to be native. */ + var DataView = getNative(context, 'DataView'), + Map = getNative(context, 'Map'), + Promise = getNative(context, 'Promise'), + Set = getNative(context, 'Set'), + WeakMap = getNative(context, 'WeakMap'), + nativeCreate = getNative(Object, 'create'); -Input.prototype._estimateSize = function() { - return this.toBufferWriter().toBuffer().length; -}; + /** Used to store function metadata. */ + var metaMap = WeakMap && new WeakMap; -module.exports = Input; + /** Used to lookup unminified function names. */ + var realNames = {}; -},{"../../encoding/bufferwriter":178,"../../errors":180,"../../script":188,"../../util/buffer":206,"../../util/js":207,"../../util/preconditions":208,"../output":198,"../sighash":199,"buffer":52,"lodash":245}],194:[function(require,module,exports){ -'use strict'; + /** Used to detect maps, sets, and weakmaps. */ + var dataViewCtorString = toSource(DataView), + mapCtorString = toSource(Map), + promiseCtorString = toSource(Promise), + setCtorString = toSource(Set), + weakMapCtorString = toSource(WeakMap); -var _ = require('lodash'); -var inherits = require('inherits'); -var Transaction = require('../transaction'); -var Input = require('./input'); -var Output = require('../output'); -var $ = require('../../util/preconditions'); + /** Used to convert symbols to primitives and strings. */ + var symbolProto = Symbol ? Symbol.prototype : undefined, + symbolValueOf = symbolProto ? symbolProto.valueOf : undefined, + symbolToString = symbolProto ? symbolProto.toString : undefined; -var Script = require('../../script'); -var Signature = require('../../crypto/signature'); -var Sighash = require('../sighash'); -var PublicKey = require('../../publickey'); -var BufferUtil = require('../../util/buffer'); -var TransactionSignature = require('../signature'); + /*------------------------------------------------------------------------*/ -/** - * @constructor - */ -function MultiSigInput(input, pubkeys, threshold, signatures, opts) { - opts = opts || {}; - Input.apply(this, arguments); - var self = this; - pubkeys = pubkeys || input.publicKeys; - threshold = threshold || input.threshold; - signatures = signatures || input.signatures; - if (opts.noSorting) { - this.publicKeys = pubkeys - } else { - this.publicKeys = _.sortBy(pubkeys, function(publicKey) { return publicKey.toString('hex'); }); - } - $.checkState(Script.buildMultisigOut(this.publicKeys, threshold).equals(this.output.script), - 'Provided public keys don\'t match to the provided output script'); - this.publicKeyIndex = {}; - _.each(this.publicKeys, function(publicKey, index) { - self.publicKeyIndex[publicKey.toString()] = index; - }); - this.threshold = threshold; - // Empty array of signatures - this.signatures = signatures ? this._deserializeSignatures(signatures) : new Array(this.publicKeys.length); -} -inherits(MultiSigInput, Input); + /** + * Creates a `lodash` object which wraps `value` to enable implicit method + * chain sequences. Methods that operate on and return arrays, collections, + * and functions can be chained together. Methods that retrieve a single value + * or may return a primitive value will automatically end the chain sequence + * and return the unwrapped value. Otherwise, the value must be unwrapped + * with `_#value`. + * + * Explicit chain sequences, which must be unwrapped with `_#value`, may be + * enabled using `_.chain`. + * + * The execution of chained methods is lazy, that is, it's deferred until + * `_#value` is implicitly or explicitly called. + * + * Lazy evaluation allows several methods to support shortcut fusion. + * Shortcut fusion is an optimization to merge iteratee calls; this avoids + * the creation of intermediate arrays and can greatly reduce the number of + * iteratee executions. Sections of a chain sequence qualify for shortcut + * fusion if the section is applied to an array and iteratees accept only + * one argument. The heuristic for whether a section qualifies for shortcut + * fusion is subject to change. + * + * Chaining is supported in custom builds as long as the `_#value` method is + * directly or indirectly included in the build. + * + * In addition to lodash methods, wrappers have `Array` and `String` methods. + * + * The wrapper `Array` methods are: + * `concat`, `join`, `pop`, `push`, `shift`, `sort`, `splice`, and `unshift` + * + * The wrapper `String` methods are: + * `replace` and `split` + * + * The wrapper methods that support shortcut fusion are: + * `at`, `compact`, `drop`, `dropRight`, `dropWhile`, `filter`, `find`, + * `findLast`, `head`, `initial`, `last`, `map`, `reject`, `reverse`, `slice`, + * `tail`, `take`, `takeRight`, `takeRightWhile`, `takeWhile`, and `toArray` + * + * The chainable wrapper methods are: + * `after`, `ary`, `assign`, `assignIn`, `assignInWith`, `assignWith`, `at`, + * `before`, `bind`, `bindAll`, `bindKey`, `castArray`, `chain`, `chunk`, + * `commit`, `compact`, `concat`, `conforms`, `constant`, `countBy`, `create`, + * `curry`, `debounce`, `defaults`, `defaultsDeep`, `defer`, `delay`, + * `difference`, `differenceBy`, `differenceWith`, `drop`, `dropRight`, + * `dropRightWhile`, `dropWhile`, `extend`, `extendWith`, `fill`, `filter`, + * `flatMap`, `flatMapDeep`, `flatMapDepth`, `flatten`, `flattenDeep`, + * `flattenDepth`, `flip`, `flow`, `flowRight`, `fromPairs`, `functions`, + * `functionsIn`, `groupBy`, `initial`, `intersection`, `intersectionBy`, + * `intersectionWith`, `invert`, `invertBy`, `invokeMap`, `iteratee`, `keyBy`, + * `keys`, `keysIn`, `map`, `mapKeys`, `mapValues`, `matches`, `matchesProperty`, + * `memoize`, `merge`, `mergeWith`, `method`, `methodOf`, `mixin`, `negate`, + * `nthArg`, `omit`, `omitBy`, `once`, `orderBy`, `over`, `overArgs`, + * `overEvery`, `overSome`, `partial`, `partialRight`, `partition`, `pick`, + * `pickBy`, `plant`, `property`, `propertyOf`, `pull`, `pullAll`, `pullAllBy`, + * `pullAllWith`, `pullAt`, `push`, `range`, `rangeRight`, `rearg`, `reject`, + * `remove`, `rest`, `reverse`, `sampleSize`, `set`, `setWith`, `shuffle`, + * `slice`, `sort`, `sortBy`, `splice`, `spread`, `tail`, `take`, `takeRight`, + * `takeRightWhile`, `takeWhile`, `tap`, `throttle`, `thru`, `toArray`, + * `toPairs`, `toPairsIn`, `toPath`, `toPlainObject`, `transform`, `unary`, + * `union`, `unionBy`, `unionWith`, `uniq`, `uniqBy`, `uniqWith`, `unset`, + * `unshift`, `unzip`, `unzipWith`, `update`, `updateWith`, `values`, + * `valuesIn`, `without`, `wrap`, `xor`, `xorBy`, `xorWith`, `zip`, + * `zipObject`, `zipObjectDeep`, and `zipWith` + * + * The wrapper methods that are **not** chainable by default are: + * `add`, `attempt`, `camelCase`, `capitalize`, `ceil`, `clamp`, `clone`, + * `cloneDeep`, `cloneDeepWith`, `cloneWith`, `conformsTo`, `deburr`, + * `defaultTo`, `divide`, `each`, `eachRight`, `endsWith`, `eq`, `escape`, + * `escapeRegExp`, `every`, `find`, `findIndex`, `findKey`, `findLast`, + * `findLastIndex`, `findLastKey`, `first`, `floor`, `forEach`, `forEachRight`, + * `forIn`, `forInRight`, `forOwn`, `forOwnRight`, `get`, `gt`, `gte`, `has`, + * `hasIn`, `head`, `identity`, `includes`, `indexOf`, `inRange`, `invoke`, + * `isArguments`, `isArray`, `isArrayBuffer`, `isArrayLike`, `isArrayLikeObject`, + * `isBoolean`, `isBuffer`, `isDate`, `isElement`, `isEmpty`, `isEqual`, + * `isEqualWith`, `isError`, `isFinite`, `isFunction`, `isInteger`, `isLength`, + * `isMap`, `isMatch`, `isMatchWith`, `isNaN`, `isNative`, `isNil`, `isNull`, + * `isNumber`, `isObject`, `isObjectLike`, `isPlainObject`, `isRegExp`, + * `isSafeInteger`, `isSet`, `isString`, `isUndefined`, `isTypedArray`, + * `isWeakMap`, `isWeakSet`, `join`, `kebabCase`, `last`, `lastIndexOf`, + * `lowerCase`, `lowerFirst`, `lt`, `lte`, `max`, `maxBy`, `mean`, `meanBy`, + * `min`, `minBy`, `multiply`, `noConflict`, `noop`, `now`, `nth`, `pad`, + * `padEnd`, `padStart`, `parseInt`, `pop`, `random`, `reduce`, `reduceRight`, + * `repeat`, `result`, `round`, `runInContext`, `sample`, `shift`, `size`, + * `snakeCase`, `some`, `sortedIndex`, `sortedIndexBy`, `sortedLastIndex`, + * `sortedLastIndexBy`, `startCase`, `startsWith`, `stubArray`, `stubFalse`, + * `stubObject`, `stubString`, `stubTrue`, `subtract`, `sum`, `sumBy`, + * `template`, `times`, `toFinite`, `toInteger`, `toJSON`, `toLength`, + * `toLower`, `toNumber`, `toSafeInteger`, `toString`, `toUpper`, `trim`, + * `trimEnd`, `trimStart`, `truncate`, `unescape`, `uniqueId`, `upperCase`, + * `upperFirst`, `value`, and `words` + * + * @name _ + * @constructor + * @category Seq + * @param {*} value The value to wrap in a `lodash` instance. + * @returns {Object} Returns the new `lodash` wrapper instance. + * @example + * + * function square(n) { + * return n * n; + * } + * + * var wrapped = _([1, 2, 3]); + * + * // Returns an unwrapped value. + * wrapped.reduce(_.add); + * // => 6 + * + * // Returns a wrapped value. + * var squares = wrapped.map(square); + * + * _.isArray(squares); + * // => false + * + * _.isArray(squares.value()); + * // => true + */ + function lodash(value) { + if (isObjectLike(value) && !isArray(value) && !(value instanceof LazyWrapper)) { + if (value instanceof LodashWrapper) { + return value; + } + if (hasOwnProperty.call(value, '__wrapped__')) { + return wrapperClone(value); + } + } + return new LodashWrapper(value); + } -MultiSigInput.prototype.toObject = function() { - var obj = Input.prototype.toObject.apply(this, arguments); - obj.threshold = this.threshold; - obj.publicKeys = _.map(this.publicKeys, function(publicKey) { return publicKey.toString(); }); - obj.signatures = this._serializeSignatures(); - return obj; -}; + /** + * The base implementation of `_.create` without support for assigning + * properties to the created object. + * + * @private + * @param {Object} proto The object to inherit from. + * @returns {Object} Returns the new object. + */ + var baseCreate = (function() { + function object() {} + return function(proto) { + if (!isObject(proto)) { + return {}; + } + if (objectCreate) { + return objectCreate(proto); + } + object.prototype = proto; + var result = new object; + object.prototype = undefined; + return result; + }; + }()); -MultiSigInput.prototype._deserializeSignatures = function(signatures) { - return _.map(signatures, function(signature) { - if (!signature) { - return undefined; + /** + * The function whose prototype chain sequence wrappers inherit from. + * + * @private + */ + function baseLodash() { + // No operation performed. } - return new TransactionSignature(signature); - }); -}; -MultiSigInput.prototype._serializeSignatures = function() { - return _.map(this.signatures, function(signature) { - if (!signature) { - return undefined; + /** + * The base constructor for creating `lodash` wrapper objects. + * + * @private + * @param {*} value The value to wrap. + * @param {boolean} [chainAll] Enable explicit method chain sequences. + */ + function LodashWrapper(value, chainAll) { + this.__wrapped__ = value; + this.__actions__ = []; + this.__chain__ = !!chainAll; + this.__index__ = 0; + this.__values__ = undefined; } - return signature.toObject(); - }); -}; -MultiSigInput.prototype.getSignatures = function(transaction, privateKey, index, sigtype) { - $.checkState(this.output instanceof Output); - sigtype = sigtype || Signature.SIGHASH_ALL; + /** + * By default, the template delimiters used by lodash are like those in + * embedded Ruby (ERB) as well as ES2015 template strings. Change the + * following template settings to use alternative delimiters. + * + * @static + * @memberOf _ + * @type {Object} + */ + lodash.templateSettings = { - var self = this; - var results = []; - _.each(this.publicKeys, function(publicKey) { - if (publicKey.toString() === privateKey.publicKey.toString()) { - results.push(new TransactionSignature({ - publicKey: privateKey.publicKey, - prevTxId: self.prevTxId, - outputIndex: self.outputIndex, - inputIndex: index, - signature: Sighash.sign(transaction, privateKey, sigtype, index, self.output.script), - sigtype: sigtype - })); - } - }); + /** + * Used to detect `data` property values to be HTML-escaped. + * + * @memberOf _.templateSettings + * @type {RegExp} + */ + 'escape': reEscape, + + /** + * Used to detect code to be evaluated. + * + * @memberOf _.templateSettings + * @type {RegExp} + */ + 'evaluate': reEvaluate, - return results; -}; + /** + * Used to detect `data` property values to inject. + * + * @memberOf _.templateSettings + * @type {RegExp} + */ + 'interpolate': reInterpolate, -MultiSigInput.prototype.addSignature = function(transaction, signature) { - $.checkState(!this.isFullySigned(), 'All needed signatures have already been added'); - $.checkArgument(!_.isUndefined(this.publicKeyIndex[signature.publicKey.toString()]), - 'Signature has no matching public key'); - $.checkState(this.isValidSignature(transaction, signature)); - this.signatures[this.publicKeyIndex[signature.publicKey.toString()]] = signature; - this._updateScript(); - return this; -}; + /** + * Used to reference the data object in the template text. + * + * @memberOf _.templateSettings + * @type {string} + */ + 'variable': '', -MultiSigInput.prototype._updateScript = function() { - this.setScript(Script.buildMultisigIn( - this.publicKeys, - this.threshold, - this._createSignatures() - )); - return this; -}; + /** + * Used to import variables into the compiled template. + * + * @memberOf _.templateSettings + * @type {Object} + */ + 'imports': { -MultiSigInput.prototype._createSignatures = function() { - return _.map( - _.filter(this.signatures, function(signature) { return !_.isUndefined(signature); }), - function(signature) { - return BufferUtil.concat([ - signature.signature.toDER(), - BufferUtil.integerAsSingleByteBuffer(signature.sigtype) - ]); - } - ); -}; + /** + * A reference to the `lodash` function. + * + * @memberOf _.templateSettings.imports + * @type {Function} + */ + '_': lodash + } + }; -MultiSigInput.prototype.clearSignatures = function() { - this.signatures = new Array(this.publicKeys.length); - this._updateScript(); -}; + // Ensure wrappers are instances of `baseLodash`. + lodash.prototype = baseLodash.prototype; + lodash.prototype.constructor = lodash; -MultiSigInput.prototype.isFullySigned = function() { - return this.countSignatures() === this.threshold; -}; + LodashWrapper.prototype = baseCreate(baseLodash.prototype); + LodashWrapper.prototype.constructor = LodashWrapper; -MultiSigInput.prototype.countMissingSignatures = function() { - return this.threshold - this.countSignatures(); -}; + /*------------------------------------------------------------------------*/ -MultiSigInput.prototype.countSignatures = function() { - return _.reduce(this.signatures, function(sum, signature) { - return sum + (!!signature); - }, 0); -}; + /** + * Creates a lazy wrapper object which wraps `value` to enable lazy evaluation. + * + * @private + * @constructor + * @param {*} value The value to wrap. + */ + function LazyWrapper(value) { + this.__wrapped__ = value; + this.__actions__ = []; + this.__dir__ = 1; + this.__filtered__ = false; + this.__iteratees__ = []; + this.__takeCount__ = MAX_ARRAY_LENGTH; + this.__views__ = []; + } -MultiSigInput.prototype.publicKeysWithoutSignature = function() { - var self = this; - return _.filter(this.publicKeys, function(publicKey) { - return !(self.signatures[self.publicKeyIndex[publicKey.toString()]]); - }); -}; + /** + * Creates a clone of the lazy wrapper object. + * + * @private + * @name clone + * @memberOf LazyWrapper + * @returns {Object} Returns the cloned `LazyWrapper` object. + */ + function lazyClone() { + var result = new LazyWrapper(this.__wrapped__); + result.__actions__ = copyArray(this.__actions__); + result.__dir__ = this.__dir__; + result.__filtered__ = this.__filtered__; + result.__iteratees__ = copyArray(this.__iteratees__); + result.__takeCount__ = this.__takeCount__; + result.__views__ = copyArray(this.__views__); + return result; + } -MultiSigInput.prototype.isValidSignature = function(transaction, signature) { - // FIXME: Refactor signature so this is not necessary - signature.signature.nhashtype = signature.sigtype; - return Sighash.verify( - transaction, - signature.signature, - signature.publicKey, - signature.inputIndex, - this.output.script - ); -}; + /** + * Reverses the direction of lazy iteration. + * + * @private + * @name reverse + * @memberOf LazyWrapper + * @returns {Object} Returns the new reversed `LazyWrapper` object. + */ + function lazyReverse() { + if (this.__filtered__) { + var result = new LazyWrapper(this); + result.__dir__ = -1; + result.__filtered__ = true; + } else { + result = this.clone(); + result.__dir__ *= -1; + } + return result; + } -/** - * - * @param {Buffer[]} signatures - * @param {PublicKey[]} publicKeys - * @param {Transaction} transaction - * @param {Integer} inputIndex - * @param {Input} input - * @returns {TransactionSignature[]} - */ -MultiSigInput.normalizeSignatures = function(transaction, input, inputIndex, signatures, publicKeys) { - return publicKeys.map(function (pubKey) { - var signatureMatch = null; - signatures = signatures.filter(function (signatureBuffer) { - if (signatureMatch) { - return true; + /** + * Extracts the unwrapped value from its lazy wrapper. + * + * @private + * @name value + * @memberOf LazyWrapper + * @returns {*} Returns the unwrapped value. + */ + function lazyValue() { + var array = this.__wrapped__.value(), + dir = this.__dir__, + isArr = isArray(array), + isRight = dir < 0, + arrLength = isArr ? array.length : 0, + view = getView(0, arrLength, this.__views__), + start = view.start, + end = view.end, + length = end - start, + index = isRight ? end : (start - 1), + iteratees = this.__iteratees__, + iterLength = iteratees.length, + resIndex = 0, + takeCount = nativeMin(length, this.__takeCount__); + + if (!isArr || (!isRight && arrLength == length && takeCount == length)) { + return baseWrapperValue(array, this.__actions__); } + var result = []; - var signature = new TransactionSignature({ - signature: Signature.fromTxFormat(signatureBuffer), - publicKey: pubKey, - prevTxId: input.prevTxId, - outputIndex: input.outputIndex, - inputIndex: inputIndex, - sigtype: Signature.SIGHASH_ALL - }); + outer: + while (length-- && resIndex < takeCount) { + index += dir; - signature.signature.nhashtype = signature.sigtype; - var isMatch = Sighash.verify( - transaction, - signature.signature, - signature.publicKey, - signature.inputIndex, - input.output.script - ); + var iterIndex = -1, + value = array[index]; - if (isMatch) { - signatureMatch = signature; - return false; + while (++iterIndex < iterLength) { + var data = iteratees[iterIndex], + iteratee = data.iteratee, + type = data.type, + computed = iteratee(value); + + if (type == LAZY_MAP_FLAG) { + value = computed; + } else if (!computed) { + if (type == LAZY_FILTER_FLAG) { + continue outer; + } else { + break outer; + } + } + } + result[resIndex++] = value; } + return result; + } - return true; - }); + // Ensure `LazyWrapper` is an instance of `baseLodash`. + LazyWrapper.prototype = baseCreate(baseLodash.prototype); + LazyWrapper.prototype.constructor = LazyWrapper; - return signatureMatch ? signatureMatch : null; - }); -}; + /*------------------------------------------------------------------------*/ -MultiSigInput.OPCODES_SIZE = 1; // 0 -MultiSigInput.SIGNATURE_SIZE = 73; // size (1) + DER (<=72) + /** + * Creates a hash object. + * + * @private + * @constructor + * @param {Array} [entries] The key-value pairs to cache. + */ + function Hash(entries) { + var index = -1, + length = entries == null ? 0 : entries.length; -MultiSigInput.prototype._estimateSize = function() { - return MultiSigInput.OPCODES_SIZE + - this.threshold * MultiSigInput.SIGNATURE_SIZE; -}; + this.clear(); + while (++index < length) { + var entry = entries[index]; + this.set(entry[0], entry[1]); + } + } -module.exports = MultiSigInput; + /** + * Removes all key-value entries from the hash. + * + * @private + * @name clear + * @memberOf Hash + */ + function hashClear() { + this.__data__ = nativeCreate ? nativeCreate(null) : {}; + this.size = 0; + } -},{"../../crypto/signature":174,"../../publickey":187,"../../script":188,"../../util/buffer":206,"../../util/preconditions":208,"../output":198,"../sighash":199,"../signature":201,"../transaction":202,"./input":193,"inherits":244,"lodash":245}],195:[function(require,module,exports){ -(function (Buffer){ -'use strict'; + /** + * Removes `key` and its value from the hash. + * + * @private + * @name delete + * @memberOf Hash + * @param {Object} hash The hash to modify. + * @param {string} key The key of the value to remove. + * @returns {boolean} Returns `true` if the entry was removed, else `false`. + */ + function hashDelete(key) { + var result = this.has(key) && delete this.__data__[key]; + this.size -= result ? 1 : 0; + return result; + } -/* jshint maxparams:5 */ + /** + * Gets the hash value for `key`. + * + * @private + * @name get + * @memberOf Hash + * @param {string} key The key of the value to get. + * @returns {*} Returns the entry value. + */ + function hashGet(key) { + var data = this.__data__; + if (nativeCreate) { + var result = data[key]; + return result === HASH_UNDEFINED ? undefined : result; + } + return hasOwnProperty.call(data, key) ? data[key] : undefined; + } -var _ = require('lodash'); -var inherits = require('inherits'); -var Input = require('./input'); -var Output = require('../output'); -var $ = require('../../util/preconditions'); + /** + * Checks if a hash value for `key` exists. + * + * @private + * @name has + * @memberOf Hash + * @param {string} key The key of the entry to check. + * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`. + */ + function hashHas(key) { + var data = this.__data__; + return nativeCreate ? (data[key] !== undefined) : hasOwnProperty.call(data, key); + } -var Script = require('../../script'); -var Signature = require('../../crypto/signature'); -var Sighash = require('../sighash'); -var SighashWitness = require('../sighashwitness'); -var BufferWriter = require('../../encoding/bufferwriter'); -var BufferUtil = require('../../util/buffer'); -var TransactionSignature = require('../signature'); + /** + * Sets the hash `key` to `value`. + * + * @private + * @name set + * @memberOf Hash + * @param {string} key The key of the value to set. + * @param {*} value The value to set. + * @returns {Object} Returns the hash instance. + */ + function hashSet(key, value) { + var data = this.__data__; + this.size += this.has(key) ? 0 : 1; + data[key] = (nativeCreate && value === undefined) ? HASH_UNDEFINED : value; + return this; + } -/** - * @constructor - */ -function MultiSigScriptHashInput(input, pubkeys, threshold, signatures, nestedWitness, opts) { - /* jshint maxstatements:20 */ - opts = opts || {}; - Input.apply(this, arguments); - var self = this; - pubkeys = pubkeys || input.publicKeys; - threshold = threshold || input.threshold; - signatures = signatures || input.signatures; - this.nestedWitness = nestedWitness ? true : false; - if (opts.noSorting) { - this.publicKeys = pubkeys - } else { - this.publicKeys = _.sortBy(pubkeys, function(publicKey) { return publicKey.toString('hex'); }); - } - this.redeemScript = Script.buildMultisigOut(this.publicKeys, threshold); - if (this.nestedWitness) { - var nested = Script.buildWitnessMultisigOutFromScript(this.redeemScript); - $.checkState(Script.buildScriptHashOut(nested).equals(this.output.script), - 'Provided public keys don\'t hash to the provided output (nested witness)'); - var scriptSig = new Script(); - scriptSig.add(nested.toBuffer()); - this.setScript(scriptSig); - } else { - $.checkState(Script.buildScriptHashOut(this.redeemScript).equals(this.output.script), - 'Provided public keys don\'t hash to the provided output'); - } + // Add methods to `Hash`. + Hash.prototype.clear = hashClear; + Hash.prototype['delete'] = hashDelete; + Hash.prototype.get = hashGet; + Hash.prototype.has = hashHas; + Hash.prototype.set = hashSet; - this.publicKeyIndex = {}; - _.each(this.publicKeys, function(publicKey, index) { - self.publicKeyIndex[publicKey.toString()] = index; - }); - this.threshold = threshold; - // Empty array of signatures - this.signatures = signatures ? this._deserializeSignatures(signatures) : new Array(this.publicKeys.length); -} -inherits(MultiSigScriptHashInput, Input); + /*------------------------------------------------------------------------*/ -MultiSigScriptHashInput.prototype.toObject = function() { - var obj = Input.prototype.toObject.apply(this, arguments); - obj.threshold = this.threshold; - obj.publicKeys = _.map(this.publicKeys, function(publicKey) { return publicKey.toString(); }); - obj.signatures = this._serializeSignatures(); - return obj; -}; + /** + * Creates an list cache object. + * + * @private + * @constructor + * @param {Array} [entries] The key-value pairs to cache. + */ + function ListCache(entries) { + var index = -1, + length = entries == null ? 0 : entries.length; -MultiSigScriptHashInput.prototype._deserializeSignatures = function(signatures) { - return _.map(signatures, function(signature) { - if (!signature) { - return undefined; + this.clear(); + while (++index < length) { + var entry = entries[index]; + this.set(entry[0], entry[1]); + } } - return new TransactionSignature(signature); - }); -}; -MultiSigScriptHashInput.prototype._serializeSignatures = function() { - return _.map(this.signatures, function(signature) { - if (!signature) { - return undefined; + /** + * Removes all key-value entries from the list cache. + * + * @private + * @name clear + * @memberOf ListCache + */ + function listCacheClear() { + this.__data__ = []; + this.size = 0; } - return signature.toObject(); - }); -}; - -MultiSigScriptHashInput.prototype.getScriptCode = function() { - var writer = new BufferWriter(); - if (!this.redeemScript.hasCodeseparators()) { - var redeemScriptBuffer = this.redeemScript.toBuffer(); - writer.writeVarintNum(redeemScriptBuffer.length); - writer.write(redeemScriptBuffer); - } else { - throw new Error('@TODO'); - } - return writer.toBuffer(); -}; - -MultiSigScriptHashInput.prototype.getSighash = function(transaction, privateKey, index, sigtype) { - var self = this; - var hash; - if (self.nestedWitness) { - var scriptCode = self.getScriptCode(); - var satoshisBuffer = self.getSatoshisBuffer(); - hash = SighashWitness.sighash(transaction, sigtype, index, scriptCode, satoshisBuffer); - } else { - hash = Sighash.sighash(transaction, sigtype, index, self.redeemScript); - } - return hash; -}; -MultiSigScriptHashInput.prototype.getSignatures = function(transaction, privateKey, index, sigtype) { - $.checkState(this.output instanceof Output); - sigtype = sigtype || Signature.SIGHASH_ALL; + /** + * Removes `key` and its value from the list cache. + * + * @private + * @name delete + * @memberOf ListCache + * @param {string} key The key of the value to remove. + * @returns {boolean} Returns `true` if the entry was removed, else `false`. + */ + function listCacheDelete(key) { + var data = this.__data__, + index = assocIndexOf(data, key); - var self = this; - var results = []; - _.each(this.publicKeys, function(publicKey) { - if (publicKey.toString() === privateKey.publicKey.toString()) { - var signature; - if (self.nestedWitness) { - var scriptCode = self.getScriptCode(); - var satoshisBuffer = self.getSatoshisBuffer(); - signature = SighashWitness.sign(transaction, privateKey, sigtype, index, scriptCode, satoshisBuffer); - } else { - signature = Sighash.sign(transaction, privateKey, sigtype, index, self.redeemScript); + if (index < 0) { + return false; } - results.push(new TransactionSignature({ - publicKey: privateKey.publicKey, - prevTxId: self.prevTxId, - outputIndex: self.outputIndex, - inputIndex: index, - signature: signature, - sigtype: sigtype - })); + var lastIndex = data.length - 1; + if (index == lastIndex) { + data.pop(); + } else { + splice.call(data, index, 1); + } + --this.size; + return true; } - }); - return results; -}; -MultiSigScriptHashInput.prototype.addSignature = function(transaction, signature) { - $.checkState(!this.isFullySigned(), 'All needed signatures have already been added'); - $.checkArgument(!_.isUndefined(this.publicKeyIndex[signature.publicKey.toString()]), - 'Signature has no matching public key'); - $.checkState(this.isValidSignature(transaction, signature)); - this.signatures[this.publicKeyIndex[signature.publicKey.toString()]] = signature; - this._updateScript(); - return this; -}; + /** + * Gets the list cache value for `key`. + * + * @private + * @name get + * @memberOf ListCache + * @param {string} key The key of the value to get. + * @returns {*} Returns the entry value. + */ + function listCacheGet(key) { + var data = this.__data__, + index = assocIndexOf(data, key); -MultiSigScriptHashInput.prototype._updateScript = function() { - if (this.nestedWitness) { - var stack = [ - new Buffer(0), - ]; - var signatures = this._createSignatures(); - for (var i = 0; i < signatures.length; i++) { - stack.push(signatures[i]); + return index < 0 ? undefined : data[index][1]; } - stack.push(this.redeemScript.toBuffer()); - this.setWitnesses(stack); - } else { - var scriptSig = Script.buildP2SHMultisigIn( - this.publicKeys, - this.threshold, - this._createSignatures(), - { cachedMultisig: this.redeemScript } - ); - this.setScript(scriptSig); - } - return this; -}; -MultiSigScriptHashInput.prototype._createSignatures = function() { - return _.map( - _.filter(this.signatures, function(signature) { return !_.isUndefined(signature); }), - function(signature) { - return BufferUtil.concat([ - signature.signature.toDER(), - BufferUtil.integerAsSingleByteBuffer(signature.sigtype) - ]); + /** + * Checks if a list cache value for `key` exists. + * + * @private + * @name has + * @memberOf ListCache + * @param {string} key The key of the entry to check. + * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`. + */ + function listCacheHas(key) { + return assocIndexOf(this.__data__, key) > -1; } - ); -}; -MultiSigScriptHashInput.prototype.clearSignatures = function() { - this.signatures = new Array(this.publicKeys.length); - this._updateScript(); -}; + /** + * Sets the list cache `key` to `value`. + * + * @private + * @name set + * @memberOf ListCache + * @param {string} key The key of the value to set. + * @param {*} value The value to set. + * @returns {Object} Returns the list cache instance. + */ + function listCacheSet(key, value) { + var data = this.__data__, + index = assocIndexOf(data, key); -MultiSigScriptHashInput.prototype.isFullySigned = function() { - return this.countSignatures() === this.threshold; -}; + if (index < 0) { + ++this.size; + data.push([key, value]); + } else { + data[index][1] = value; + } + return this; + } -MultiSigScriptHashInput.prototype.countMissingSignatures = function() { - return this.threshold - this.countSignatures(); -}; + // Add methods to `ListCache`. + ListCache.prototype.clear = listCacheClear; + ListCache.prototype['delete'] = listCacheDelete; + ListCache.prototype.get = listCacheGet; + ListCache.prototype.has = listCacheHas; + ListCache.prototype.set = listCacheSet; -MultiSigScriptHashInput.prototype.countSignatures = function() { - return _.reduce(this.signatures, function(sum, signature) { - return sum + (!!signature); - }, 0); -}; + /*------------------------------------------------------------------------*/ -MultiSigScriptHashInput.prototype.publicKeysWithoutSignature = function() { - var self = this; - return _.filter(this.publicKeys, function(publicKey) { - return !(self.signatures[self.publicKeyIndex[publicKey.toString()]]); - }); -}; + /** + * Creates a map cache object to store key-value pairs. + * + * @private + * @constructor + * @param {Array} [entries] The key-value pairs to cache. + */ + function MapCache(entries) { + var index = -1, + length = entries == null ? 0 : entries.length; -MultiSigScriptHashInput.prototype.isValidSignature = function(transaction, signature) { - if (this.nestedWitness) { - signature.signature.nhashtype = signature.sigtype; - var scriptCode = this.getScriptCode(); - var satoshisBuffer = this.getSatoshisBuffer(); - return SighashWitness.verify( - transaction, - signature.signature, - signature.publicKey, - signature.inputIndex, - scriptCode, - satoshisBuffer - ); - } else { - // FIXME: Refactor signature so this is not necessary - signature.signature.nhashtype = signature.sigtype; - return Sighash.verify( - transaction, - signature.signature, - signature.publicKey, - signature.inputIndex, - this.redeemScript - ); - } -}; + this.clear(); + while (++index < length) { + var entry = entries[index]; + this.set(entry[0], entry[1]); + } + } -MultiSigScriptHashInput.OPCODES_SIZE = 7; // serialized size (<=3) + 0 .. N .. M OP_CHECKMULTISIG -MultiSigScriptHashInput.SIGNATURE_SIZE = 74; // size (1) + DER (<=72) + sighash (1) -MultiSigScriptHashInput.PUBKEY_SIZE = 34; // size (1) + DER (<=33) + /** + * Removes all key-value entries from the map. + * + * @private + * @name clear + * @memberOf MapCache + */ + function mapCacheClear() { + this.size = 0; + this.__data__ = { + 'hash': new Hash, + 'map': new (Map || ListCache), + 'string': new Hash + }; + } -MultiSigScriptHashInput.prototype._estimateSize = function() { - return MultiSigScriptHashInput.OPCODES_SIZE + - this.threshold * MultiSigScriptHashInput.SIGNATURE_SIZE + - this.publicKeys.length * MultiSigScriptHashInput.PUBKEY_SIZE; -}; + /** + * Removes `key` and its value from the map. + * + * @private + * @name delete + * @memberOf MapCache + * @param {string} key The key of the value to remove. + * @returns {boolean} Returns `true` if the entry was removed, else `false`. + */ + function mapCacheDelete(key) { + var result = getMapData(this, key)['delete'](key); + this.size -= result ? 1 : 0; + return result; + } -module.exports = MultiSigScriptHashInput; + /** + * Gets the map value for `key`. + * + * @private + * @name get + * @memberOf MapCache + * @param {string} key The key of the value to get. + * @returns {*} Returns the entry value. + */ + function mapCacheGet(key) { + return getMapData(this, key).get(key); + } -}).call(this,require("buffer").Buffer) -},{"../../crypto/signature":174,"../../encoding/bufferwriter":178,"../../script":188,"../../util/buffer":206,"../../util/preconditions":208,"../output":198,"../sighash":199,"../sighashwitness":200,"../signature":201,"./input":193,"buffer":52,"inherits":244,"lodash":245}],196:[function(require,module,exports){ -'use strict'; + /** + * Checks if a map value for `key` exists. + * + * @private + * @name has + * @memberOf MapCache + * @param {string} key The key of the entry to check. + * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`. + */ + function mapCacheHas(key) { + return getMapData(this, key).has(key); + } -var inherits = require('inherits'); + /** + * Sets the map `key` to `value`. + * + * @private + * @name set + * @memberOf MapCache + * @param {string} key The key of the value to set. + * @param {*} value The value to set. + * @returns {Object} Returns the map cache instance. + */ + function mapCacheSet(key, value) { + var data = getMapData(this, key), + size = data.size; -var $ = require('../../util/preconditions'); -var BufferUtil = require('../../util/buffer'); + data.set(key, value); + this.size += data.size == size ? 0 : 1; + return this; + } -var Input = require('./input'); -var Output = require('../output'); -var Sighash = require('../sighash'); -var Script = require('../../script'); -var Signature = require('../../crypto/signature'); -var TransactionSignature = require('../signature'); + // Add methods to `MapCache`. + MapCache.prototype.clear = mapCacheClear; + MapCache.prototype['delete'] = mapCacheDelete; + MapCache.prototype.get = mapCacheGet; + MapCache.prototype.has = mapCacheHas; + MapCache.prototype.set = mapCacheSet; -/** - * Represents a special kind of input of PayToPublicKey kind. - * @constructor - */ -function PublicKeyInput() { - Input.apply(this, arguments); -} -inherits(PublicKeyInput, Input); + /*------------------------------------------------------------------------*/ -/** - * @param {Transaction} transaction - the transaction to be signed - * @param {PrivateKey} privateKey - the private key with which to sign the transaction - * @param {number} index - the index of the input in the transaction input vector - * @param {number=} sigtype - the type of signature, defaults to Signature.SIGHASH_ALL - * @return {Array} of objects that can be - */ -PublicKeyInput.prototype.getSignatures = function(transaction, privateKey, index, sigtype) { - $.checkState(this.output instanceof Output); - sigtype = sigtype || Signature.SIGHASH_ALL; - var publicKey = privateKey.toPublicKey(); - if (publicKey.toString() === this.output.script.getPublicKey().toString('hex')) { - return [new TransactionSignature({ - publicKey: publicKey, - prevTxId: this.prevTxId, - outputIndex: this.outputIndex, - inputIndex: index, - signature: Sighash.sign(transaction, privateKey, sigtype, index, this.output.script), - sigtype: sigtype - })]; - } - return []; -}; + /** + * + * Creates an array cache object to store unique values. + * + * @private + * @constructor + * @param {Array} [values] The values to cache. + */ + function SetCache(values) { + var index = -1, + length = values == null ? 0 : values.length; -/** - * Add the provided signature - * - * @param {Object} signature - * @param {PublicKey} signature.publicKey - * @param {Signature} signature.signature - * @param {number=} signature.sigtype - * @return {PublicKeyInput} this, for chaining - */ -PublicKeyInput.prototype.addSignature = function(transaction, signature) { - $.checkState(this.isValidSignature(transaction, signature), 'Signature is invalid'); - this.setScript(Script.buildPublicKeyIn( - signature.signature.toDER(), - signature.sigtype - )); - return this; -}; + this.__data__ = new MapCache; + while (++index < length) { + this.add(values[index]); + } + } -/** - * Clear the input's signature - * @return {PublicKeyHashInput} this, for chaining - */ -PublicKeyInput.prototype.clearSignatures = function() { - this.setScript(Script.empty()); - return this; -}; + /** + * Adds `value` to the array cache. + * + * @private + * @name add + * @memberOf SetCache + * @alias push + * @param {*} value The value to cache. + * @returns {Object} Returns the cache instance. + */ + function setCacheAdd(value) { + this.__data__.set(value, HASH_UNDEFINED); + return this; + } -/** - * Query whether the input is signed - * @return {boolean} - */ -PublicKeyInput.prototype.isFullySigned = function() { - return this.script.isPublicKeyIn(); -}; + /** + * Checks if `value` is in the array cache. + * + * @private + * @name has + * @memberOf SetCache + * @param {*} value The value to search for. + * @returns {number} Returns `true` if `value` is found, else `false`. + */ + function setCacheHas(value) { + return this.__data__.has(value); + } -PublicKeyInput.SCRIPT_MAX_SIZE = 73; // sigsize (1 + 72) + // Add methods to `SetCache`. + SetCache.prototype.add = SetCache.prototype.push = setCacheAdd; + SetCache.prototype.has = setCacheHas; -PublicKeyInput.prototype._estimateSize = function() { - return PublicKeyInput.SCRIPT_MAX_SIZE; -}; + /*------------------------------------------------------------------------*/ -module.exports = PublicKeyInput; + /** + * Creates a stack cache object to store key-value pairs. + * + * @private + * @constructor + * @param {Array} [entries] The key-value pairs to cache. + */ + function Stack(entries) { + var data = this.__data__ = new ListCache(entries); + this.size = data.size; + } -},{"../../crypto/signature":174,"../../script":188,"../../util/buffer":206,"../../util/preconditions":208,"../output":198,"../sighash":199,"../signature":201,"./input":193,"inherits":244}],197:[function(require,module,exports){ -'use strict'; + /** + * Removes all key-value entries from the stack. + * + * @private + * @name clear + * @memberOf Stack + */ + function stackClear() { + this.__data__ = new ListCache; + this.size = 0; + } -var inherits = require('inherits'); + /** + * Removes `key` and its value from the stack. + * + * @private + * @name delete + * @memberOf Stack + * @param {string} key The key of the value to remove. + * @returns {boolean} Returns `true` if the entry was removed, else `false`. + */ + function stackDelete(key) { + var data = this.__data__, + result = data['delete'](key); -var $ = require('../../util/preconditions'); -var BufferUtil = require('../../util/buffer'); + this.size = data.size; + return result; + } -var Hash = require('../../crypto/hash'); -var Input = require('./input'); -var Output = require('../output'); -var Sighash = require('../sighash'); -var Script = require('../../script'); -var Signature = require('../../crypto/signature'); -var TransactionSignature = require('../signature'); + /** + * Gets the stack value for `key`. + * + * @private + * @name get + * @memberOf Stack + * @param {string} key The key of the value to get. + * @returns {*} Returns the entry value. + */ + function stackGet(key) { + return this.__data__.get(key); + } -/** - * Represents a special kind of input of PayToPublicKeyHash kind. - * @constructor - */ -function PublicKeyHashInput() { - Input.apply(this, arguments); -} -inherits(PublicKeyHashInput, Input); + /** + * Checks if a stack value for `key` exists. + * + * @private + * @name has + * @memberOf Stack + * @param {string} key The key of the entry to check. + * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`. + */ + function stackHas(key) { + return this.__data__.has(key); + } -/* jshint maxparams: 5 */ -/** - * @param {Transaction} transaction - the transaction to be signed - * @param {PrivateKey} privateKey - the private key with which to sign the transaction - * @param {number} index - the index of the input in the transaction input vector - * @param {number=} sigtype - the type of signature, defaults to Signature.SIGHASH_ALL - * @param {Buffer=} hashData - the precalculated hash of the public key associated with the privateKey provided - * @return {Array} of objects that can be - */ -PublicKeyHashInput.prototype.getSignatures = function(transaction, privateKey, index, sigtype, hashData) { - $.checkState(this.output instanceof Output); - hashData = hashData || Hash.sha256ripemd160(privateKey.publicKey.toBuffer()); - sigtype = sigtype || Signature.SIGHASH_ALL; + /** + * Sets the stack `key` to `value`. + * + * @private + * @name set + * @memberOf Stack + * @param {string} key The key of the value to set. + * @param {*} value The value to set. + * @returns {Object} Returns the stack cache instance. + */ + function stackSet(key, value) { + var data = this.__data__; + if (data instanceof ListCache) { + var pairs = data.__data__; + if (!Map || (pairs.length < LARGE_ARRAY_SIZE - 1)) { + pairs.push([key, value]); + this.size = ++data.size; + return this; + } + data = this.__data__ = new MapCache(pairs); + } + data.set(key, value); + this.size = data.size; + return this; + } + + // Add methods to `Stack`. + Stack.prototype.clear = stackClear; + Stack.prototype['delete'] = stackDelete; + Stack.prototype.get = stackGet; + Stack.prototype.has = stackHas; + Stack.prototype.set = stackSet; + + /*------------------------------------------------------------------------*/ + + /** + * Creates an array of the enumerable property names of the array-like `value`. + * + * @private + * @param {*} value The value to query. + * @param {boolean} inherited Specify returning inherited property names. + * @returns {Array} Returns the array of property names. + */ + function arrayLikeKeys(value, inherited) { + var isArr = isArray(value), + isArg = !isArr && isArguments(value), + isBuff = !isArr && !isArg && isBuffer(value), + isType = !isArr && !isArg && !isBuff && isTypedArray(value), + skipIndexes = isArr || isArg || isBuff || isType, + result = skipIndexes ? baseTimes(value.length, String) : [], + length = result.length; - if (BufferUtil.equals(hashData, this.output.script.getPublicKeyHash())) { - return [new TransactionSignature({ - publicKey: privateKey.publicKey, - prevTxId: this.prevTxId, - outputIndex: this.outputIndex, - inputIndex: index, - signature: Sighash.sign(transaction, privateKey, sigtype, index, this.output.script), - sigtype: sigtype - })]; - } - return []; -}; -/* jshint maxparams: 3 */ + for (var key in value) { + if ((inherited || hasOwnProperty.call(value, key)) && + !(skipIndexes && ( + // Safari 9 has enumerable `arguments.length` in strict mode. + key == 'length' || + // Node.js 0.10 has enumerable non-index properties on buffers. + (isBuff && (key == 'offset' || key == 'parent')) || + // PhantomJS 2 has enumerable non-index properties on typed arrays. + (isType && (key == 'buffer' || key == 'byteLength' || key == 'byteOffset')) || + // Skip index properties. + isIndex(key, length) + ))) { + result.push(key); + } + } + return result; + } -/** - * Add the provided signature - * - * @param {Object} signature - * @param {PublicKey} signature.publicKey - * @param {Signature} signature.signature - * @param {number=} signature.sigtype - * @return {PublicKeyHashInput} this, for chaining - */ -PublicKeyHashInput.prototype.addSignature = function(transaction, signature) { - $.checkState(this.isValidSignature(transaction, signature), 'Signature is invalid'); - this.setScript(Script.buildPublicKeyHashIn( - signature.publicKey, - signature.signature.toDER(), - signature.sigtype - )); - return this; -}; + /** + * A specialized version of `_.sample` for arrays. + * + * @private + * @param {Array} array The array to sample. + * @returns {*} Returns the random element. + */ + function arraySample(array) { + var length = array.length; + return length ? array[baseRandom(0, length - 1)] : undefined; + } -/** - * Clear the input's signature - * @return {PublicKeyHashInput} this, for chaining - */ -PublicKeyHashInput.prototype.clearSignatures = function() { - this.setScript(Script.empty()); - return this; -}; + /** + * A specialized version of `_.sampleSize` for arrays. + * + * @private + * @param {Array} array The array to sample. + * @param {number} n The number of elements to sample. + * @returns {Array} Returns the random elements. + */ + function arraySampleSize(array, n) { + return shuffleSelf(copyArray(array), baseClamp(n, 0, array.length)); + } -/** - * Query whether the input is signed - * @return {boolean} - */ -PublicKeyHashInput.prototype.isFullySigned = function() { - return this.script.isPublicKeyHashIn(); -}; + /** + * A specialized version of `_.shuffle` for arrays. + * + * @private + * @param {Array} array The array to shuffle. + * @returns {Array} Returns the new shuffled array. + */ + function arrayShuffle(array) { + return shuffleSelf(copyArray(array)); + } -PublicKeyHashInput.SCRIPT_MAX_SIZE = 73 + 34; // sigsize (1 + 72) + pubkey (1 + 33) + /** + * This function is like `assignValue` except that it doesn't assign + * `undefined` values. + * + * @private + * @param {Object} object The object to modify. + * @param {string} key The key of the property to assign. + * @param {*} value The value to assign. + */ + function assignMergeValue(object, key, value) { + if ((value !== undefined && !eq(object[key], value)) || + (value === undefined && !(key in object))) { + baseAssignValue(object, key, value); + } + } -PublicKeyHashInput.prototype._estimateSize = function() { - return PublicKeyHashInput.SCRIPT_MAX_SIZE; -}; + /** + * Assigns `value` to `key` of `object` if the existing value is not equivalent + * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero) + * for equality comparisons. + * + * @private + * @param {Object} object The object to modify. + * @param {string} key The key of the property to assign. + * @param {*} value The value to assign. + */ + function assignValue(object, key, value) { + var objValue = object[key]; + if (!(hasOwnProperty.call(object, key) && eq(objValue, value)) || + (value === undefined && !(key in object))) { + baseAssignValue(object, key, value); + } + } -module.exports = PublicKeyHashInput; + /** + * Gets the index at which the `key` is found in `array` of key-value pairs. + * + * @private + * @param {Array} array The array to inspect. + * @param {*} key The key to search for. + * @returns {number} Returns the index of the matched value, else `-1`. + */ + function assocIndexOf(array, key) { + var length = array.length; + while (length--) { + if (eq(array[length][0], key)) { + return length; + } + } + return -1; + } -},{"../../crypto/hash":171,"../../crypto/signature":174,"../../script":188,"../../util/buffer":206,"../../util/preconditions":208,"../output":198,"../sighash":199,"../signature":201,"./input":193,"inherits":244}],198:[function(require,module,exports){ -'use strict'; + /** + * Aggregates elements of `collection` on `accumulator` with keys transformed + * by `iteratee` and values set by `setter`. + * + * @private + * @param {Array|Object} collection The collection to iterate over. + * @param {Function} setter The function to set `accumulator` values. + * @param {Function} iteratee The iteratee to transform keys. + * @param {Object} accumulator The initial aggregated object. + * @returns {Function} Returns `accumulator`. + */ + function baseAggregator(collection, setter, iteratee, accumulator) { + baseEach(collection, function(value, key, collection) { + setter(accumulator, value, iteratee(value), collection); + }); + return accumulator; + } -var _ = require('lodash'); -var BN = require('../crypto/bn'); -var buffer = require('buffer'); -var bufferUtil = require('../util/buffer'); -var JSUtil = require('../util/js'); -var BufferWriter = require('../encoding/bufferwriter'); -var Script = require('../script'); -var $ = require('../util/preconditions'); -var errors = require('../errors'); + /** + * The base implementation of `_.assign` without support for multiple sources + * or `customizer` functions. + * + * @private + * @param {Object} object The destination object. + * @param {Object} source The source object. + * @returns {Object} Returns `object`. + */ + function baseAssign(object, source) { + return object && copyObject(source, keys(source), object); + } -var MAX_SAFE_INTEGER = 0x1fffffffffffff; + /** + * The base implementation of `_.assignIn` without support for multiple sources + * or `customizer` functions. + * + * @private + * @param {Object} object The destination object. + * @param {Object} source The source object. + * @returns {Object} Returns `object`. + */ + function baseAssignIn(object, source) { + return object && copyObject(source, keysIn(source), object); + } -function Output(args) { - if (!(this instanceof Output)) { - return new Output(args); - } - if (_.isObject(args)) { - this.satoshis = args.satoshis; - if (bufferUtil.isBuffer(args.script)) { - this._scriptBuffer = args.script; - } else { - var script; - if (_.isString(args.script) && JSUtil.isHexa(args.script)) { - script = new buffer.Buffer(args.script, 'hex'); + /** + * The base implementation of `assignValue` and `assignMergeValue` without + * value checks. + * + * @private + * @param {Object} object The object to modify. + * @param {string} key The key of the property to assign. + * @param {*} value The value to assign. + */ + function baseAssignValue(object, key, value) { + if (key == '__proto__' && defineProperty) { + defineProperty(object, key, { + 'configurable': true, + 'enumerable': true, + 'value': value, + 'writable': true + }); } else { - script = args.script; + object[key] = value; } - this.setScript(script); } - } else { - throw new TypeError('Unrecognized argument for Output'); - } -} -Object.defineProperty(Output.prototype, 'script', { - configurable: false, - enumerable: true, - get: function() { - if (this._script) { - return this._script; - } else { - this.setScriptFromBuffer(this._scriptBuffer); - return this._script; - } + /** + * The base implementation of `_.at` without support for individual paths. + * + * @private + * @param {Object} object The object to iterate over. + * @param {string[]} paths The property paths to pick. + * @returns {Array} Returns the picked elements. + */ + function baseAt(object, paths) { + var index = -1, + length = paths.length, + result = Array(length), + skip = object == null; - } -}); + while (++index < length) { + result[index] = skip ? undefined : get(object, paths[index]); + } + return result; + } -Object.defineProperty(Output.prototype, 'satoshis', { - configurable: false, - enumerable: true, - get: function() { - return this._satoshis; - }, - set: function(num) { - if (num instanceof BN) { - this._satoshisBN = num; - this._satoshis = num.toNumber(); - } else if (_.isString(num)) { - this._satoshis = parseInt(num); - this._satoshisBN = BN.fromNumber(this._satoshis); - } else { - $.checkArgument( - JSUtil.isNaturalNumber(num), - 'Output satoshis is not a natural number' - ); - this._satoshisBN = BN.fromNumber(num); - this._satoshis = num; + /** + * The base implementation of `_.clamp` which doesn't coerce arguments. + * + * @private + * @param {number} number The number to clamp. + * @param {number} [lower] The lower bound. + * @param {number} upper The upper bound. + * @returns {number} Returns the clamped number. + */ + function baseClamp(number, lower, upper) { + if (number === number) { + if (upper !== undefined) { + number = number <= upper ? number : upper; + } + if (lower !== undefined) { + number = number >= lower ? number : lower; + } + } + return number; } - $.checkState( - JSUtil.isNaturalNumber(this._satoshis), - 'Output satoshis is not a natural number' - ); - } -}); -Output.prototype.invalidSatoshis = function() { - if (this._satoshis > MAX_SAFE_INTEGER) { - return 'transaction txout satoshis greater than max safe integer'; - } - if (this._satoshis !== this._satoshisBN.toNumber()) { - return 'transaction txout satoshis has corrupted value'; - } - if (this._satoshis < 0) { - return 'transaction txout negative'; - } - return false; -}; + /** + * The base implementation of `_.clone` and `_.cloneDeep` which tracks + * traversed objects. + * + * @private + * @param {*} value The value to clone. + * @param {boolean} bitmask The bitmask flags. + * 1 - Deep clone + * 2 - Flatten inherited properties + * 4 - Clone symbols + * @param {Function} [customizer] The function to customize cloning. + * @param {string} [key] The key of `value`. + * @param {Object} [object] The parent object of `value`. + * @param {Object} [stack] Tracks traversed objects and their clone counterparts. + * @returns {*} Returns the cloned value. + */ + function baseClone(value, bitmask, customizer, key, object, stack) { + var result, + isDeep = bitmask & CLONE_DEEP_FLAG, + isFlat = bitmask & CLONE_FLAT_FLAG, + isFull = bitmask & CLONE_SYMBOLS_FLAG; -Output.prototype.toObject = Output.prototype.toJSON = function toObject() { - var obj = { - satoshis: this.satoshis - }; - obj.script = this._scriptBuffer.toString('hex'); - return obj; -}; + if (customizer) { + result = object ? customizer(value, key, object, stack) : customizer(value); + } + if (result !== undefined) { + return result; + } + if (!isObject(value)) { + return value; + } + var isArr = isArray(value); + if (isArr) { + result = initCloneArray(value); + if (!isDeep) { + return copyArray(value, result); + } + } else { + var tag = getTag(value), + isFunc = tag == funcTag || tag == genTag; -Output.fromObject = function(data) { - return new Output(data); -}; + if (isBuffer(value)) { + return cloneBuffer(value, isDeep); + } + if (tag == objectTag || tag == argsTag || (isFunc && !object)) { + result = (isFlat || isFunc) ? {} : initCloneObject(value); + if (!isDeep) { + return isFlat + ? copySymbolsIn(value, baseAssignIn(result, value)) + : copySymbols(value, baseAssign(result, value)); + } + } else { + if (!cloneableTags[tag]) { + return object ? value : {}; + } + result = initCloneByTag(value, tag, isDeep); + } + } + // Check for circular references and return its corresponding clone. + stack || (stack = new Stack); + var stacked = stack.get(value); + if (stacked) { + return stacked; + } + stack.set(value, result); -Output.prototype.setScriptFromBuffer = function(buffer) { - this._scriptBuffer = buffer; - try { - this._script = Script.fromBuffer(this._scriptBuffer); - this._script._isOutput = true; - } catch(e) { - if (e instanceof errors.Script.InvalidBuffer) { - this._script = null; - } else { - throw e; - } - } -}; + if (isSet(value)) { + value.forEach(function(subValue) { + result.add(baseClone(subValue, bitmask, customizer, subValue, value, stack)); + }); -Output.prototype.setScript = function(script) { - if (script instanceof Script) { - this._scriptBuffer = script.toBuffer(); - this._script = script; - this._script._isOutput = true; - } else if (_.isString(script)) { - this._script = Script.fromString(script); - this._scriptBuffer = this._script.toBuffer(); - this._script._isOutput = true; - } else if (bufferUtil.isBuffer(script)) { - this.setScriptFromBuffer(script); - } else { - throw new TypeError('Invalid argument type: script'); - } - return this; -}; + return result; + } -Output.prototype.inspect = function() { - var scriptStr; - if (this.script) { - scriptStr = this.script.inspect(); - } else { - scriptStr = this._scriptBuffer.toString('hex'); - } - return ''; -}; + if (isMap(value)) { + value.forEach(function(subValue, key) { + result.set(key, baseClone(subValue, bitmask, customizer, key, value, stack)); + }); -Output.fromBufferReader = function(br) { - var obj = {}; - obj.satoshis = br.readUInt64LEBN(); - var size = br.readVarintNum(); - if (size !== 0) { - obj.script = br.read(size); - } else { - obj.script = new buffer.Buffer([]); - } - return new Output(obj); -}; + return result; + } -Output.prototype.toBufferWriter = function(writer) { - if (!writer) { - writer = new BufferWriter(); - } - writer.writeUInt64LEBN(this._satoshisBN); - var script = this._scriptBuffer; - writer.writeVarintNum(script.length); - writer.write(script); - return writer; -}; + var keysFunc = isFull + ? (isFlat ? getAllKeysIn : getAllKeys) + : (isFlat ? keysIn : keys); -module.exports = Output; + var props = isArr ? undefined : keysFunc(value); + arrayEach(props || value, function(subValue, key) { + if (props) { + key = subValue; + subValue = value[key]; + } + // Recursively populate clone (susceptible to call stack limits). + assignValue(result, key, baseClone(subValue, bitmask, customizer, key, value, stack)); + }); + return result; + } + + /** + * The base implementation of `_.conforms` which doesn't clone `source`. + * + * @private + * @param {Object} source The object of property predicates to conform to. + * @returns {Function} Returns the new spec function. + */ + function baseConforms(source) { + var props = keys(source); + return function(object) { + return baseConformsTo(object, source, props); + }; + } + + /** + * The base implementation of `_.conformsTo` which accepts `props` to check. + * + * @private + * @param {Object} object The object to inspect. + * @param {Object} source The object of property predicates to conform to. + * @returns {boolean} Returns `true` if `object` conforms, else `false`. + */ + function baseConformsTo(object, source, props) { + var length = props.length; + if (object == null) { + return !length; + } + object = Object(object); + while (length--) { + var key = props[length], + predicate = source[key], + value = object[key]; -},{"../crypto/bn":169,"../encoding/bufferwriter":178,"../errors":180,"../script":188,"../util/buffer":206,"../util/js":207,"../util/preconditions":208,"buffer":52,"lodash":245}],199:[function(require,module,exports){ -(function (Buffer){ -'use strict'; + if ((value === undefined && !(key in object)) || !predicate(value)) { + return false; + } + } + return true; + } -var buffer = require('buffer'); + /** + * The base implementation of `_.delay` and `_.defer` which accepts `args` + * to provide to `func`. + * + * @private + * @param {Function} func The function to delay. + * @param {number} wait The number of milliseconds to delay invocation. + * @param {Array} args The arguments to provide to `func`. + * @returns {number|Object} Returns the timer id or timeout object. + */ + function baseDelay(func, wait, args) { + if (typeof func != 'function') { + throw new TypeError(FUNC_ERROR_TEXT); + } + return setTimeout(function() { func.apply(undefined, args); }, wait); + } -var Signature = require('../crypto/signature'); -var Script = require('../script'); -var Output = require('./output'); -var BufferReader = require('../encoding/bufferreader'); -var BufferWriter = require('../encoding/bufferwriter'); -var BN = require('../crypto/bn'); -var Hash = require('../crypto/hash'); -var ECDSA = require('../crypto/ecdsa'); -var $ = require('../util/preconditions'); -var _ = require('lodash'); + /** + * The base implementation of methods like `_.difference` without support + * for excluding multiple arrays or iteratee shorthands. + * + * @private + * @param {Array} array The array to inspect. + * @param {Array} values The values to exclude. + * @param {Function} [iteratee] The iteratee invoked per element. + * @param {Function} [comparator] The comparator invoked per element. + * @returns {Array} Returns the new array of filtered values. + */ + function baseDifference(array, values, iteratee, comparator) { + var index = -1, + includes = arrayIncludes, + isCommon = true, + length = array.length, + result = [], + valuesLength = values.length; -var SIGHASH_SINGLE_BUG = '0000000000000000000000000000000000000000000000000000000000000001'; -var BITS_64_ON = 'ffffffffffffffff'; + if (!length) { + return result; + } + if (iteratee) { + values = arrayMap(values, baseUnary(iteratee)); + } + if (comparator) { + includes = arrayIncludesWith; + isCommon = false; + } + else if (values.length >= LARGE_ARRAY_SIZE) { + includes = cacheHas; + isCommon = false; + values = new SetCache(values); + } + outer: + while (++index < length) { + var value = array[index], + computed = iteratee == null ? value : iteratee(value); -/** - * Returns a buffer of length 32 bytes with the hash that needs to be signed - * for OP_CHECKSIG. - * - * @name Signing.sighash - * @param {Transaction} transaction the transaction to sign - * @param {number} sighashType the type of the hash - * @param {number} inputNumber the input index for the signature - * @param {Script} subscript the script that will be signed - */ -var sighash = function sighash(transaction, sighashType, inputNumber, subscript) { - var Transaction = require('./transaction'); - var Input = require('./input'); + value = (comparator || value !== 0) ? value : 0; + if (isCommon && computed === computed) { + var valuesIndex = valuesLength; + while (valuesIndex--) { + if (values[valuesIndex] === computed) { + continue outer; + } + } + result.push(value); + } + else if (!includes(values, computed, comparator)) { + result.push(value); + } + } + return result; + } - var i; - // Copy transaction - var txcopy = Transaction.shallowCopy(transaction); + /** + * The base implementation of `_.forEach` without support for iteratee shorthands. + * + * @private + * @param {Array|Object} collection The collection to iterate over. + * @param {Function} iteratee The function invoked per iteration. + * @returns {Array|Object} Returns `collection`. + */ + var baseEach = createBaseEach(baseForOwn); - // Copy script - subscript = new Script(subscript); - subscript.removeCodeseparators(); + /** + * The base implementation of `_.forEachRight` without support for iteratee shorthands. + * + * @private + * @param {Array|Object} collection The collection to iterate over. + * @param {Function} iteratee The function invoked per iteration. + * @returns {Array|Object} Returns `collection`. + */ + var baseEachRight = createBaseEach(baseForOwnRight, true); - for (i = 0; i < txcopy.inputs.length; i++) { - // Blank signatures for other inputs - txcopy.inputs[i] = new Input(txcopy.inputs[i]).setScript(Script.empty()); - } + /** + * The base implementation of `_.every` without support for iteratee shorthands. + * + * @private + * @param {Array|Object} collection The collection to iterate over. + * @param {Function} predicate The function invoked per iteration. + * @returns {boolean} Returns `true` if all elements pass the predicate check, + * else `false` + */ + function baseEvery(collection, predicate) { + var result = true; + baseEach(collection, function(value, index, collection) { + result = !!predicate(value, index, collection); + return result; + }); + return result; + } - txcopy.inputs[inputNumber] = new Input(txcopy.inputs[inputNumber]).setScript(subscript); + /** + * The base implementation of methods like `_.max` and `_.min` which accepts a + * `comparator` to determine the extremum value. + * + * @private + * @param {Array} array The array to iterate over. + * @param {Function} iteratee The iteratee invoked per iteration. + * @param {Function} comparator The comparator used to compare values. + * @returns {*} Returns the extremum value. + */ + function baseExtremum(array, iteratee, comparator) { + var index = -1, + length = array.length; - if ((sighashType & 31) === Signature.SIGHASH_NONE || - (sighashType & 31) === Signature.SIGHASH_SINGLE) { + while (++index < length) { + var value = array[index], + current = iteratee(value); - // clear all sequenceNumbers - for (i = 0; i < txcopy.inputs.length; i++) { - if (i !== inputNumber) { - txcopy.inputs[i].sequenceNumber = 0; + if (current != null && (computed === undefined + ? (current === current && !isSymbol(current)) + : comparator(current, computed) + )) { + var computed = current, + result = value; + } } + return result; } - } - if ((sighashType & 31) === Signature.SIGHASH_NONE) { - txcopy.outputs = []; + /** + * The base implementation of `_.fill` without an iteratee call guard. + * + * @private + * @param {Array} array The array to fill. + * @param {*} value The value to fill `array` with. + * @param {number} [start=0] The start position. + * @param {number} [end=array.length] The end position. + * @returns {Array} Returns `array`. + */ + function baseFill(array, value, start, end) { + var length = array.length; - } else if ((sighashType & 31) === Signature.SIGHASH_SINGLE) { - // The SIGHASH_SINGLE bug. - // https://bitcointalk.org/index.php?topic=260595.0 - if (inputNumber >= txcopy.outputs.length) { - return Buffer.from(SIGHASH_SINGLE_BUG, 'hex'); + start = toInteger(start); + if (start < 0) { + start = -start > length ? 0 : (length + start); + } + end = (end === undefined || end > length) ? length : toInteger(end); + if (end < 0) { + end += length; + } + end = start > end ? 0 : toLength(end); + while (start < end) { + array[start++] = value; + } + return array; } - txcopy.outputs.length = inputNumber + 1; - - for (i = 0; i < inputNumber; i++) { - txcopy.outputs[i] = new Output({ - satoshis: BN.fromBuffer(new buffer.Buffer(BITS_64_ON, 'hex')), - script: Script.empty() + /** + * The base implementation of `_.filter` without support for iteratee shorthands. + * + * @private + * @param {Array|Object} collection The collection to iterate over. + * @param {Function} predicate The function invoked per iteration. + * @returns {Array} Returns the new filtered array. + */ + function baseFilter(collection, predicate) { + var result = []; + baseEach(collection, function(value, index, collection) { + if (predicate(value, index, collection)) { + result.push(value); + } }); + return result; } - } - if (sighashType & Signature.SIGHASH_ANYONECANPAY) { - txcopy.inputs = [txcopy.inputs[inputNumber]]; - } + /** + * The base implementation of `_.flatten` with support for restricting flattening. + * + * @private + * @param {Array} array The array to flatten. + * @param {number} depth The maximum recursion depth. + * @param {boolean} [predicate=isFlattenable] The function invoked per iteration. + * @param {boolean} [isStrict] Restrict to values that pass `predicate` checks. + * @param {Array} [result=[]] The initial result value. + * @returns {Array} Returns the new flattened array. + */ + function baseFlatten(array, depth, predicate, isStrict, result) { + var index = -1, + length = array.length; - var buf = new BufferWriter() - .write(txcopy.toBuffer()) - .writeInt32LE(sighashType) - .toBuffer(); - var ret = Hash.sha256sha256(buf); - ret = new BufferReader(ret).readReverse(); - return ret; -}; + predicate || (predicate = isFlattenable); + result || (result = []); -/** - * Create a signature - * - * @name Signing.sign - * @param {Transaction} transaction - * @param {PrivateKey} privateKey - * @param {number} sighash - * @param {number} inputIndex - * @param {Script} subscript - * @return {Signature} - */ -function sign(transaction, privateKey, sighashType, inputIndex, subscript) { - var hashbuf = sighash(transaction, sighashType, inputIndex, subscript); - var sig = ECDSA.sign(hashbuf, privateKey, 'little').set({ - nhashtype: sighashType - }); - return sig; -} + while (++index < length) { + var value = array[index]; + if (depth > 0 && predicate(value)) { + if (depth > 1) { + // Recursively flatten arrays (susceptible to call stack limits). + baseFlatten(value, depth - 1, predicate, isStrict, result); + } else { + arrayPush(result, value); + } + } else if (!isStrict) { + result[result.length] = value; + } + } + return result; + } -/** - * Verify a signature - * - * @name Signing.verify - * @param {Transaction} transaction - * @param {Signature} signature - * @param {PublicKey} publicKey - * @param {number} inputIndex - * @param {Script} subscript - * @return {boolean} - */ -function verify(transaction, signature, publicKey, inputIndex, subscript) { - $.checkArgument(!_.isUndefined(transaction)); - $.checkArgument(!_.isUndefined(signature) && !_.isUndefined(signature.nhashtype)); - var hashbuf = sighash(transaction, signature.nhashtype, inputIndex, subscript); - return ECDSA.verify(hashbuf, signature, publicKey, 'little'); -} + /** + * The base implementation of `baseForOwn` which iterates over `object` + * properties returned by `keysFunc` and invokes `iteratee` for each property. + * Iteratee functions may exit iteration early by explicitly returning `false`. + * + * @private + * @param {Object} object The object to iterate over. + * @param {Function} iteratee The function invoked per iteration. + * @param {Function} keysFunc The function to get the keys of `object`. + * @returns {Object} Returns `object`. + */ + var baseFor = createBaseFor(); -/** - * @namespace Signing - */ -module.exports = { - sighash: sighash, - sign: sign, - verify: verify -}; + /** + * This function is like `baseFor` except that it iterates over properties + * in the opposite order. + * + * @private + * @param {Object} object The object to iterate over. + * @param {Function} iteratee The function invoked per iteration. + * @param {Function} keysFunc The function to get the keys of `object`. + * @returns {Object} Returns `object`. + */ + var baseForRight = createBaseFor(true); -}).call(this,require("buffer").Buffer) -},{"../crypto/bn":169,"../crypto/ecdsa":170,"../crypto/hash":171,"../crypto/signature":174,"../encoding/bufferreader":177,"../encoding/bufferwriter":178,"../script":188,"../util/preconditions":208,"./input":192,"./output":198,"./transaction":202,"buffer":52,"lodash":245}],200:[function(require,module,exports){ -(function (Buffer){ -'use strict'; + /** + * The base implementation of `_.forOwn` without support for iteratee shorthands. + * + * @private + * @param {Object} object The object to iterate over. + * @param {Function} iteratee The function invoked per iteration. + * @returns {Object} Returns `object`. + */ + function baseForOwn(object, iteratee) { + return object && baseFor(object, iteratee, keys); + } -/* jshint maxparams:5 */ + /** + * The base implementation of `_.forOwnRight` without support for iteratee shorthands. + * + * @private + * @param {Object} object The object to iterate over. + * @param {Function} iteratee The function invoked per iteration. + * @returns {Object} Returns `object`. + */ + function baseForOwnRight(object, iteratee) { + return object && baseForRight(object, iteratee, keys); + } -var Signature = require('../crypto/signature'); -var Script = require('../script'); -var Output = require('./output'); -var BufferReader = require('../encoding/bufferreader'); -var BufferWriter = require('../encoding/bufferwriter'); -var BN = require('../crypto/bn'); -var Hash = require('../crypto/hash'); -var ECDSA = require('../crypto/ecdsa'); -var $ = require('../util/preconditions'); -var _ = require('lodash'); + /** + * The base implementation of `_.functions` which creates an array of + * `object` function property names filtered from `props`. + * + * @private + * @param {Object} object The object to inspect. + * @param {Array} props The property names to filter. + * @returns {Array} Returns the function names. + */ + function baseFunctions(object, props) { + return arrayFilter(props, function(key) { + return isFunction(object[key]); + }); + } -/** - * Returns a buffer of length 32 bytes with the hash that needs to be signed - * for witness programs as defined by: - * https://github.com/bitcoin/bips/blob/master/bip-0143.mediawiki - * - * @name Signing.sighash - * @param {Transaction} transaction the transaction to sign - * @param {number} sighashType the type of the hash - * @param {number} inputNumber the input index for the signature - * @param {Buffer} scriptCode - * @param {Buffer} satoshisBuffer - */ -var sighash = function sighash(transaction, sighashType, inputNumber, scriptCode, satoshisBuffer) { - /* jshint maxstatements: 50 */ + /** + * The base implementation of `_.get` without support for default values. + * + * @private + * @param {Object} object The object to query. + * @param {Array|string} path The path of the property to get. + * @returns {*} Returns the resolved value. + */ + function baseGet(object, path) { + path = castPath(path, object); - var hashPrevouts; - var hashSequence; - var hashOutputs; + var index = 0, + length = path.length; - if (!(sighashType & Signature.SIGHASH_ANYONECANPAY)) { - var buffers = []; - for (var n = 0; n < transaction.inputs.length; n++) { - var input = transaction.inputs[n]; - var prevTxIdBuffer = new BufferReader(input.prevTxId).readReverse(); - buffers.push(prevTxIdBuffer); - var outputIndexBuffer = new Buffer(new Array(4)); - outputIndexBuffer.writeUInt32LE(input.outputIndex, 0); - buffers.push(outputIndexBuffer); + while (object != null && index < length) { + object = object[toKey(path[index++])]; + } + return (index && index == length) ? object : undefined; } - hashPrevouts = Hash.sha256sha256(Buffer.concat(buffers)); - } - if (!(sighashType & Signature.SIGHASH_ANYONECANPAY) && - (sighashType & 0x1f) !== Signature.SIGHASH_SINGLE && (sighashType & 0x1f) !== Signature.SIGHASH_NONE) { + /** + * The base implementation of `getAllKeys` and `getAllKeysIn` which uses + * `keysFunc` and `symbolsFunc` to get the enumerable property names and + * symbols of `object`. + * + * @private + * @param {Object} object The object to query. + * @param {Function} keysFunc The function to get the keys of `object`. + * @param {Function} symbolsFunc The function to get the symbols of `object`. + * @returns {Array} Returns the array of property names and symbols. + */ + function baseGetAllKeys(object, keysFunc, symbolsFunc) { + var result = keysFunc(object); + return isArray(object) ? result : arrayPush(result, symbolsFunc(object)); + } - var sequenceBuffers = []; - for (var m = 0; m < transaction.inputs.length; m++) { - var sequenceBuffer = new Buffer(new Array(4)); - sequenceBuffer.writeUInt32LE(transaction.inputs[m].sequenceNumber, 0); - sequenceBuffers.push(sequenceBuffer); + /** + * The base implementation of `getTag` without fallbacks for buggy environments. + * + * @private + * @param {*} value The value to query. + * @returns {string} Returns the `toStringTag`. + */ + function baseGetTag(value) { + if (value == null) { + return value === undefined ? undefinedTag : nullTag; + } + return (symToStringTag && symToStringTag in Object(value)) + ? getRawTag(value) + : objectToString(value); } - hashSequence = Hash.sha256sha256(Buffer.concat(sequenceBuffers)); - } - var outputWriter = new BufferWriter(); - if ((sighashType & 0x1f) !== Signature.SIGHASH_SINGLE && (sighashType & 0x1f) !== Signature.SIGHASH_NONE) { - for (var p = 0; p < transaction.outputs.length; p++) { - transaction.outputs[p].toBufferWriter(outputWriter); + /** + * The base implementation of `_.gt` which doesn't coerce arguments. + * + * @private + * @param {*} value The value to compare. + * @param {*} other The other value to compare. + * @returns {boolean} Returns `true` if `value` is greater than `other`, + * else `false`. + */ + function baseGt(value, other) { + return value > other; } - hashOutputs = Hash.sha256sha256(outputWriter.toBuffer()); - } else if ((sighashType & 0x1f) === Signature.SIGHASH_SINGLE && inputNumber < transaction.outputs.length) { - transaction.outputs[inputNumber].toBufferWriter(outputWriter); - hashOutputs = Hash.sha256sha256(outputWriter.toBuffer()); - } - // Version - var writer = new BufferWriter(); - writer.writeUInt32LE(transaction.version); + /** + * The base implementation of `_.has` without support for deep paths. + * + * @private + * @param {Object} [object] The object to query. + * @param {Array|string} key The key to check. + * @returns {boolean} Returns `true` if `key` exists, else `false`. + */ + function baseHas(object, key) { + return object != null && hasOwnProperty.call(object, key); + } - // Input prevouts/nSequence (none/all, depending on flags) - writer.write(hashPrevouts); - writer.write(hashSequence); + /** + * The base implementation of `_.hasIn` without support for deep paths. + * + * @private + * @param {Object} [object] The object to query. + * @param {Array|string} key The key to check. + * @returns {boolean} Returns `true` if `key` exists, else `false`. + */ + function baseHasIn(object, key) { + return object != null && key in Object(object); + } - // The input being signed (replacing the scriptSig with scriptCode + amount) - // The prevout may already be contained in hashPrevout, and the nSequence - // may already be contain in hashSequence. - var outpointId = new BufferReader(transaction.inputs[inputNumber].prevTxId).readReverse(); - writer.write(outpointId); - writer.writeUInt32LE(transaction.inputs[inputNumber].outputIndex); + /** + * The base implementation of `_.inRange` which doesn't coerce arguments. + * + * @private + * @param {number} number The number to check. + * @param {number} start The start of the range. + * @param {number} end The end of the range. + * @returns {boolean} Returns `true` if `number` is in the range, else `false`. + */ + function baseInRange(number, start, end) { + return number >= nativeMin(start, end) && number < nativeMax(start, end); + } - writer.write(scriptCode); + /** + * The base implementation of methods like `_.intersection`, without support + * for iteratee shorthands, that accepts an array of arrays to inspect. + * + * @private + * @param {Array} arrays The arrays to inspect. + * @param {Function} [iteratee] The iteratee invoked per element. + * @param {Function} [comparator] The comparator invoked per element. + * @returns {Array} Returns the new array of shared values. + */ + function baseIntersection(arrays, iteratee, comparator) { + var includes = comparator ? arrayIncludesWith : arrayIncludes, + length = arrays[0].length, + othLength = arrays.length, + othIndex = othLength, + caches = Array(othLength), + maxLength = Infinity, + result = []; - writer.write(satoshisBuffer); + while (othIndex--) { + var array = arrays[othIndex]; + if (othIndex && iteratee) { + array = arrayMap(array, baseUnary(iteratee)); + } + maxLength = nativeMin(array.length, maxLength); + caches[othIndex] = !comparator && (iteratee || (length >= 120 && array.length >= 120)) + ? new SetCache(othIndex && array) + : undefined; + } + array = arrays[0]; - writer.writeUInt32LE(transaction.inputs[inputNumber].sequenceNumber); + var index = -1, + seen = caches[0]; - // Outputs (none/one/all, depending on flags) - writer.write(hashOutputs); + outer: + while (++index < length && result.length < maxLength) { + var value = array[index], + computed = iteratee ? iteratee(value) : value; - // Locktime - writer.writeUInt32LE(transaction.nLockTime); + value = (comparator || value !== 0) ? value : 0; + if (!(seen + ? cacheHas(seen, computed) + : includes(result, computed, comparator) + )) { + othIndex = othLength; + while (--othIndex) { + var cache = caches[othIndex]; + if (!(cache + ? cacheHas(cache, computed) + : includes(arrays[othIndex], computed, comparator)) + ) { + continue outer; + } + } + if (seen) { + seen.push(computed); + } + result.push(value); + } + } + return result; + } - // Sighash type - writer.writeInt32LE(sighashType); + /** + * The base implementation of `_.invert` and `_.invertBy` which inverts + * `object` with values transformed by `iteratee` and set by `setter`. + * + * @private + * @param {Object} object The object to iterate over. + * @param {Function} setter The function to set `accumulator` values. + * @param {Function} iteratee The iteratee to transform values. + * @param {Object} accumulator The initial inverted object. + * @returns {Function} Returns `accumulator`. + */ + function baseInverter(object, setter, iteratee, accumulator) { + baseForOwn(object, function(value, key, object) { + setter(accumulator, iteratee(value), key, object); + }); + return accumulator; + } - return Hash.sha256sha256(writer.toBuffer()); + /** + * The base implementation of `_.invoke` without support for individual + * method arguments. + * + * @private + * @param {Object} object The object to query. + * @param {Array|string} path The path of the method to invoke. + * @param {Array} args The arguments to invoke the method with. + * @returns {*} Returns the result of the invoked method. + */ + function baseInvoke(object, path, args) { + path = castPath(path, object); + object = parent(object, path); + var func = object == null ? object : object[toKey(last(path))]; + return func == null ? undefined : apply(func, object, args); + } -}; + /** + * The base implementation of `_.isArguments`. + * + * @private + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is an `arguments` object, + */ + function baseIsArguments(value) { + return isObjectLike(value) && baseGetTag(value) == argsTag; + } -/** - * Create a signature - * - * @name Signing.sign - * @param {Transaction} transaction - * @param {PrivateKey} privateKey - * @param {number} sighash - * @param {number} inputIndex - * @param {Script} subscript - * @return {Signature} - */ -function sign(transaction, privateKey, sighashType, inputIndex, scriptCode, satoshisBuffer) { - var hashbuf = sighash(transaction, sighashType, inputIndex, scriptCode, satoshisBuffer); - var sig = ECDSA.sign(hashbuf, privateKey).set({ - nhashtype: sighashType - }); - return sig; -} + /** + * The base implementation of `_.isArrayBuffer` without Node.js optimizations. + * + * @private + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is an array buffer, else `false`. + */ + function baseIsArrayBuffer(value) { + return isObjectLike(value) && baseGetTag(value) == arrayBufferTag; + } -/** - * Verify a signature - * - * @name Signing.verify - * @param {Transaction} transaction - * @param {Signature} signature - * @param {PublicKey} publicKey - * @param {number} inputIndex - * @param {Script} subscript - * @return {boolean} - */ -function verify(transaction, signature, publicKey, inputIndex, scriptCode, satoshisBuffer) { - $.checkArgument(!_.isUndefined(transaction)); - $.checkArgument(!_.isUndefined(signature) && !_.isUndefined(signature.nhashtype)); - var hashbuf = sighash(transaction, signature.nhashtype, inputIndex, scriptCode, satoshisBuffer); - return ECDSA.verify(hashbuf, signature, publicKey); -} + /** + * The base implementation of `_.isDate` without Node.js optimizations. + * + * @private + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is a date object, else `false`. + */ + function baseIsDate(value) { + return isObjectLike(value) && baseGetTag(value) == dateTag; + } -/** - * @namespace Signing - */ -module.exports = { - sighash: sighash, - sign: sign, - verify: verify -}; + /** + * The base implementation of `_.isEqual` which supports partial comparisons + * and tracks traversed objects. + * + * @private + * @param {*} value The value to compare. + * @param {*} other The other value to compare. + * @param {boolean} bitmask The bitmask flags. + * 1 - Unordered comparison + * 2 - Partial comparison + * @param {Function} [customizer] The function to customize comparisons. + * @param {Object} [stack] Tracks traversed `value` and `other` objects. + * @returns {boolean} Returns `true` if the values are equivalent, else `false`. + */ + function baseIsEqual(value, other, bitmask, customizer, stack) { + if (value === other) { + return true; + } + if (value == null || other == null || (!isObjectLike(value) && !isObjectLike(other))) { + return value !== value && other !== other; + } + return baseIsEqualDeep(value, other, bitmask, customizer, baseIsEqual, stack); + } -}).call(this,require("buffer").Buffer) -},{"../crypto/bn":169,"../crypto/ecdsa":170,"../crypto/hash":171,"../crypto/signature":174,"../encoding/bufferreader":177,"../encoding/bufferwriter":178,"../script":188,"../util/preconditions":208,"./output":198,"buffer":52,"lodash":245}],201:[function(require,module,exports){ -(function (Buffer){ -'use strict'; + /** + * A specialized version of `baseIsEqual` for arrays and objects which performs + * deep comparisons and tracks traversed objects enabling objects with circular + * references to be compared. + * + * @private + * @param {Object} object The object to compare. + * @param {Object} other The other object to compare. + * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details. + * @param {Function} customizer The function to customize comparisons. + * @param {Function} equalFunc The function to determine equivalents of values. + * @param {Object} [stack] Tracks traversed `object` and `other` objects. + * @returns {boolean} Returns `true` if the objects are equivalent, else `false`. + */ + function baseIsEqualDeep(object, other, bitmask, customizer, equalFunc, stack) { + var objIsArr = isArray(object), + othIsArr = isArray(other), + objTag = objIsArr ? arrayTag : getTag(object), + othTag = othIsArr ? arrayTag : getTag(other); -var _ = require('lodash'); -var $ = require('../util/preconditions'); -var inherits = require('inherits'); -var BufferUtil = require('../util/buffer'); -var JSUtil = require('../util/js'); + objTag = objTag == argsTag ? objectTag : objTag; + othTag = othTag == argsTag ? objectTag : othTag; -var PublicKey = require('../publickey'); -var errors = require('../errors'); -var Signature = require('../crypto/signature'); + var objIsObj = objTag == objectTag, + othIsObj = othTag == objectTag, + isSameTag = objTag == othTag; -/** - * @desc - * Wrapper around Signature with fields related to signing a transaction specifically - * - * @param {Object|string|TransactionSignature} arg - * @constructor - */ -function TransactionSignature(arg) { - if (!(this instanceof TransactionSignature)) { - return new TransactionSignature(arg); - } - if (arg instanceof TransactionSignature) { - return arg; - } - if (_.isObject(arg)) { - return this._fromObject(arg); - } - throw new errors.InvalidArgument('TransactionSignatures must be instantiated from an object'); -} -inherits(TransactionSignature, Signature); + if (isSameTag && isBuffer(object)) { + if (!isBuffer(other)) { + return false; + } + objIsArr = true; + objIsObj = false; + } + if (isSameTag && !objIsObj) { + stack || (stack = new Stack); + return (objIsArr || isTypedArray(object)) + ? equalArrays(object, other, bitmask, customizer, equalFunc, stack) + : equalByTag(object, other, objTag, bitmask, customizer, equalFunc, stack); + } + if (!(bitmask & COMPARE_PARTIAL_FLAG)) { + var objIsWrapped = objIsObj && hasOwnProperty.call(object, '__wrapped__'), + othIsWrapped = othIsObj && hasOwnProperty.call(other, '__wrapped__'); -TransactionSignature.prototype._fromObject = function(arg) { - this._checkObjectArgs(arg); - this.publicKey = new PublicKey(arg.publicKey); - this.prevTxId = BufferUtil.isBuffer(arg.prevTxId) ? arg.prevTxId : Buffer.from(arg.prevTxId, 'hex'); - this.outputIndex = arg.outputIndex; - this.inputIndex = arg.inputIndex; - this.signature = (arg.signature instanceof Signature) ? arg.signature : - BufferUtil.isBuffer(arg.signature) ? Signature.fromBuffer(arg.signature) : - Signature.fromString(arg.signature); - this.sigtype = arg.sigtype; - return this; -}; + if (objIsWrapped || othIsWrapped) { + var objUnwrapped = objIsWrapped ? object.value() : object, + othUnwrapped = othIsWrapped ? other.value() : other; -TransactionSignature.prototype._checkObjectArgs = function(arg) { - $.checkArgument(PublicKey(arg.publicKey), 'publicKey'); - $.checkArgument(!_.isUndefined(arg.inputIndex), 'inputIndex'); - $.checkArgument(!_.isUndefined(arg.outputIndex), 'outputIndex'); - $.checkState(_.isNumber(arg.inputIndex), 'inputIndex must be a number'); - $.checkState(_.isNumber(arg.outputIndex), 'outputIndex must be a number'); - $.checkArgument(arg.signature, 'signature'); - $.checkArgument(arg.prevTxId, 'prevTxId'); - $.checkState(arg.signature instanceof Signature || - BufferUtil.isBuffer(arg.signature) || - JSUtil.isHexa(arg.signature), 'signature must be a buffer or hexa value'); - $.checkState(BufferUtil.isBuffer(arg.prevTxId) || - JSUtil.isHexa(arg.prevTxId), 'prevTxId must be a buffer or hexa value'); - $.checkArgument(arg.sigtype, 'sigtype'); - $.checkState(_.isNumber(arg.sigtype), 'sigtype must be a number'); -}; + stack || (stack = new Stack); + return equalFunc(objUnwrapped, othUnwrapped, bitmask, customizer, stack); + } + } + if (!isSameTag) { + return false; + } + stack || (stack = new Stack); + return equalObjects(object, other, bitmask, customizer, equalFunc, stack); + } -/** - * Serializes a transaction to a plain JS object - * @return {Object} - */ -TransactionSignature.prototype.toObject = TransactionSignature.prototype.toJSON = function toObject() { - return { - publicKey: this.publicKey.toString(), - prevTxId: this.prevTxId.toString('hex'), - outputIndex: this.outputIndex, - inputIndex: this.inputIndex, - signature: this.signature.toString(), - sigtype: this.sigtype - }; -}; + /** + * The base implementation of `_.isMap` without Node.js optimizations. + * + * @private + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is a map, else `false`. + */ + function baseIsMap(value) { + return isObjectLike(value) && getTag(value) == mapTag; + } -/** - * Builds a TransactionSignature from an object - * @param {Object} object - * @return {TransactionSignature} - */ -TransactionSignature.fromObject = function(object) { - $.checkArgument(object); - return new TransactionSignature(object); -}; + /** + * The base implementation of `_.isMatch` without support for iteratee shorthands. + * + * @private + * @param {Object} object The object to inspect. + * @param {Object} source The object of property values to match. + * @param {Array} matchData The property names, values, and compare flags to match. + * @param {Function} [customizer] The function to customize comparisons. + * @returns {boolean} Returns `true` if `object` is a match, else `false`. + */ + function baseIsMatch(object, source, matchData, customizer) { + var index = matchData.length, + length = index, + noCustomizer = !customizer; -module.exports = TransactionSignature; + if (object == null) { + return !length; + } + object = Object(object); + while (index--) { + var data = matchData[index]; + if ((noCustomizer && data[2]) + ? data[1] !== object[data[0]] + : !(data[0] in object) + ) { + return false; + } + } + while (++index < length) { + data = matchData[index]; + var key = data[0], + objValue = object[key], + srcValue = data[1]; -}).call(this,require("buffer").Buffer) -},{"../crypto/signature":174,"../errors":180,"../publickey":187,"../util/buffer":206,"../util/js":207,"../util/preconditions":208,"buffer":52,"inherits":244,"lodash":245}],202:[function(require,module,exports){ -(function (Buffer){ -'use strict'; + if (noCustomizer && data[2]) { + if (objValue === undefined && !(key in object)) { + return false; + } + } else { + var stack = new Stack; + if (customizer) { + var result = customizer(objValue, srcValue, key, object, source, stack); + } + if (!(result === undefined + ? baseIsEqual(srcValue, objValue, COMPARE_PARTIAL_FLAG | COMPARE_UNORDERED_FLAG, customizer, stack) + : result + )) { + return false; + } + } + } + return true; + } -var _ = require('lodash'); -var $ = require('../util/preconditions'); -var buffer = require('buffer'); -var compare = Buffer.compare || require('buffer-compare'); + /** + * The base implementation of `_.isNative` without bad shim checks. + * + * @private + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is a native function, + * else `false`. + */ + function baseIsNative(value) { + if (!isObject(value) || isMasked(value)) { + return false; + } + var pattern = isFunction(value) ? reIsNative : reIsHostCtor; + return pattern.test(toSource(value)); + } -var errors = require('../errors'); -var BufferUtil = require('../util/buffer'); -var JSUtil = require('../util/js'); -var BufferReader = require('../encoding/bufferreader'); -var BufferWriter = require('../encoding/bufferwriter'); -var Hash = require('../crypto/hash'); -var Signature = require('../crypto/signature'); -var Sighash = require('./sighash'); -var SighashWitness = require('./sighashwitness'); + /** + * The base implementation of `_.isRegExp` without Node.js optimizations. + * + * @private + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is a regexp, else `false`. + */ + function baseIsRegExp(value) { + return isObjectLike(value) && baseGetTag(value) == regexpTag; + } -var Address = require('../address'); -var UnspentOutput = require('./unspentoutput'); -var Input = require('./input'); -var PublicKeyHashInput = Input.PublicKeyHash; -var PublicKeyInput = Input.PublicKey; -var MultiSigScriptHashInput = Input.MultiSigScriptHash; -var MultiSigInput = Input.MultiSig; -var Output = require('./output'); -var Script = require('../script'); -var PrivateKey = require('../privatekey'); -var BN = require('../crypto/bn'); + /** + * The base implementation of `_.isSet` without Node.js optimizations. + * + * @private + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is a set, else `false`. + */ + function baseIsSet(value) { + return isObjectLike(value) && getTag(value) == setTag; + } -/** - * Represents a transaction, a set of inputs and outputs to change ownership of tokens - * - * @param {*} serialized - * @constructor - */ -function Transaction(serialized) { - if (!(this instanceof Transaction)) { - return new Transaction(serialized); - } - this.inputs = []; - this.outputs = []; - this._inputAmount = undefined; - this._outputAmount = undefined; + /** + * The base implementation of `_.isTypedArray` without Node.js optimizations. + * + * @private + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is a typed array, else `false`. + */ + function baseIsTypedArray(value) { + return isObjectLike(value) && + isLength(value.length) && !!typedArrayTags[baseGetTag(value)]; + } - if (serialized) { - if (serialized instanceof Transaction) { - return Transaction.shallowCopy(serialized); - } else if (JSUtil.isHexa(serialized)) { - this.fromString(serialized); - } else if (BufferUtil.isBuffer(serialized)) { - this.fromBuffer(serialized); - } else if (_.isObject(serialized)) { - this.fromObject(serialized); - } else { - throw new errors.InvalidArgument('Must provide an object or string to deserialize a transaction'); + /** + * The base implementation of `_.iteratee`. + * + * @private + * @param {*} [value=_.identity] The value to convert to an iteratee. + * @returns {Function} Returns the iteratee. + */ + function baseIteratee(value) { + // Don't store the `typeof` result in a variable to avoid a JIT bug in Safari 9. + // See https://bugs.webkit.org/show_bug.cgi?id=156034 for more details. + if (typeof value == 'function') { + return value; + } + if (value == null) { + return identity; + } + if (typeof value == 'object') { + return isArray(value) + ? baseMatchesProperty(value[0], value[1]) + : baseMatches(value); + } + return property(value); } - } else { - this._newTransaction(); - } -} -var CURRENT_VERSION = 1; -var DEFAULT_NLOCKTIME = 0; -var MAX_BLOCK_SIZE = 1000000; -// Minimum amount for an output for it not to be considered a dust output -Transaction.DUST_AMOUNT = 546; + /** + * The base implementation of `_.keys` which doesn't treat sparse arrays as dense. + * + * @private + * @param {Object} object The object to query. + * @returns {Array} Returns the array of property names. + */ + function baseKeys(object) { + if (!isPrototype(object)) { + return nativeKeys(object); + } + var result = []; + for (var key in Object(object)) { + if (hasOwnProperty.call(object, key) && key != 'constructor') { + result.push(key); + } + } + return result; + } -// Margin of error to allow fees in the vecinity of the expected value but doesn't allow a big difference -Transaction.FEE_SECURITY_MARGIN = 150; + /** + * The base implementation of `_.keysIn` which doesn't treat sparse arrays as dense. + * + * @private + * @param {Object} object The object to query. + * @returns {Array} Returns the array of property names. + */ + function baseKeysIn(object) { + if (!isObject(object)) { + return nativeKeysIn(object); + } + var isProto = isPrototype(object), + result = []; -// max amount of satoshis in circulation -Transaction.MAX_MONEY = 21000000 * 1e8; + for (var key in object) { + if (!(key == 'constructor' && (isProto || !hasOwnProperty.call(object, key)))) { + result.push(key); + } + } + return result; + } -// nlocktime limit to be considered block height rather than a timestamp -Transaction.NLOCKTIME_BLOCKHEIGHT_LIMIT = 5e8; + /** + * The base implementation of `_.lt` which doesn't coerce arguments. + * + * @private + * @param {*} value The value to compare. + * @param {*} other The other value to compare. + * @returns {boolean} Returns `true` if `value` is less than `other`, + * else `false`. + */ + function baseLt(value, other) { + return value < other; + } -// Max value for an unsigned 32 bit value -Transaction.NLOCKTIME_MAX_VALUE = 4294967295; + /** + * The base implementation of `_.map` without support for iteratee shorthands. + * + * @private + * @param {Array|Object} collection The collection to iterate over. + * @param {Function} iteratee The function invoked per iteration. + * @returns {Array} Returns the new mapped array. + */ + function baseMap(collection, iteratee) { + var index = -1, + result = isArrayLike(collection) ? Array(collection.length) : []; -// Value used for fee estimation (satoshis per kilobyte) -Transaction.FEE_PER_KB = 100000; + baseEach(collection, function(value, key, collection) { + result[++index] = iteratee(value, key, collection); + }); + return result; + } -// Safe upper bound for change address script size in bytes -Transaction.CHANGE_OUTPUT_MAX_SIZE = 20 + 4 + 34 + 4; -Transaction.MAXIMUM_EXTRA_SIZE = 4 + 9 + 9 + 4; + /** + * The base implementation of `_.matches` which doesn't clone `source`. + * + * @private + * @param {Object} source The object of property values to match. + * @returns {Function} Returns the new spec function. + */ + function baseMatches(source) { + var matchData = getMatchData(source); + if (matchData.length == 1 && matchData[0][2]) { + return matchesStrictComparable(matchData[0][0], matchData[0][1]); + } + return function(object) { + return object === source || baseIsMatch(object, source, matchData); + }; + } -/* Constructors and Serialization */ + /** + * The base implementation of `_.matchesProperty` which doesn't clone `srcValue`. + * + * @private + * @param {string} path The path of the property to get. + * @param {*} srcValue The value to match. + * @returns {Function} Returns the new spec function. + */ + function baseMatchesProperty(path, srcValue) { + if (isKey(path) && isStrictComparable(srcValue)) { + return matchesStrictComparable(toKey(path), srcValue); + } + return function(object) { + var objValue = get(object, path); + return (objValue === undefined && objValue === srcValue) + ? hasIn(object, path) + : baseIsEqual(srcValue, objValue, COMPARE_PARTIAL_FLAG | COMPARE_UNORDERED_FLAG); + }; + } -/** - * Create a 'shallow' copy of the transaction, by serializing and deserializing - * it dropping any additional information that inputs and outputs may have hold - * - * @param {Transaction} transaction - * @return {Transaction} - */ -Transaction.shallowCopy = function(transaction) { - var copy = new Transaction(transaction.toBuffer()); - return copy; -}; + /** + * The base implementation of `_.merge` without support for multiple sources. + * + * @private + * @param {Object} object The destination object. + * @param {Object} source The source object. + * @param {number} srcIndex The index of `source`. + * @param {Function} [customizer] The function to customize merged values. + * @param {Object} [stack] Tracks traversed source values and their merged + * counterparts. + */ + function baseMerge(object, source, srcIndex, customizer, stack) { + if (object === source) { + return; + } + baseFor(source, function(srcValue, key) { + if (isObject(srcValue)) { + stack || (stack = new Stack); + baseMergeDeep(object, source, key, srcIndex, baseMerge, customizer, stack); + } + else { + var newValue = customizer + ? customizer(safeGet(object, key), srcValue, (key + ''), object, source, stack) + : undefined; -var hashProperty = { - configurable: false, - enumerable: true, - get: function() { - this._hash = new BufferReader(this._getHash()).readReverse().toString('hex'); - return this._hash; - } -}; + if (newValue === undefined) { + newValue = srcValue; + } + assignMergeValue(object, key, newValue); + } + }, keysIn); + } -var witnessHashProperty = { - configurable: false, - enumerable: true, - get: function() { - return new BufferReader(this._getWitnessHash()).readReverse().toString('hex'); - } -}; + /** + * A specialized version of `baseMerge` for arrays and objects which performs + * deep merges and tracks traversed objects enabling objects with circular + * references to be merged. + * + * @private + * @param {Object} object The destination object. + * @param {Object} source The source object. + * @param {string} key The key of the value to merge. + * @param {number} srcIndex The index of `source`. + * @param {Function} mergeFunc The function to merge values. + * @param {Function} [customizer] The function to customize assigned values. + * @param {Object} [stack] Tracks traversed source values and their merged + * counterparts. + */ + function baseMergeDeep(object, source, key, srcIndex, mergeFunc, customizer, stack) { + var objValue = safeGet(object, key), + srcValue = safeGet(source, key), + stacked = stack.get(srcValue); -Object.defineProperty(Transaction.prototype, 'witnessHash', witnessHashProperty); -Object.defineProperty(Transaction.prototype, 'hash', hashProperty); -Object.defineProperty(Transaction.prototype, 'id', hashProperty); + if (stacked) { + assignMergeValue(object, key, stacked); + return; + } + var newValue = customizer + ? customizer(objValue, srcValue, (key + ''), object, source, stack) + : undefined; -var ioProperty = { - configurable: false, - enumerable: true, - get: function() { - return this._getInputAmount(); - } -}; -Object.defineProperty(Transaction.prototype, 'inputAmount', ioProperty); -ioProperty.get = function() { - return this._getOutputAmount(); -}; -Object.defineProperty(Transaction.prototype, 'outputAmount', ioProperty); + var isCommon = newValue === undefined; -/** - * Retrieve the little endian hash of the transaction (used for serialization) - * @return {Buffer} - */ -Transaction.prototype._getHash = function() { - return Hash.sha256sha256(this.toBuffer(true)); -}; + if (isCommon) { + var isArr = isArray(srcValue), + isBuff = !isArr && isBuffer(srcValue), + isTyped = !isArr && !isBuff && isTypedArray(srcValue); -/** - * Retrieve the little endian hash of the transaction including witness data - * @return {Buffer} - */ -Transaction.prototype._getWitnessHash = function() { - return Hash.sha256sha256(this.toBuffer(false)); -}; + newValue = srcValue; + if (isArr || isBuff || isTyped) { + if (isArray(objValue)) { + newValue = objValue; + } + else if (isArrayLikeObject(objValue)) { + newValue = copyArray(objValue); + } + else if (isBuff) { + isCommon = false; + newValue = cloneBuffer(srcValue, true); + } + else if (isTyped) { + isCommon = false; + newValue = cloneTypedArray(srcValue, true); + } + else { + newValue = []; + } + } + else if (isPlainObject(srcValue) || isArguments(srcValue)) { + newValue = objValue; + if (isArguments(objValue)) { + newValue = toPlainObject(objValue); + } + else if (!isObject(objValue) || isFunction(objValue)) { + newValue = initCloneObject(srcValue); + } + } + else { + isCommon = false; + } + } + if (isCommon) { + // Recursively merge objects and arrays (susceptible to call stack limits). + stack.set(srcValue, newValue); + mergeFunc(newValue, srcValue, srcIndex, customizer, stack); + stack['delete'](srcValue); + } + assignMergeValue(object, key, newValue); + } -/** - * Retrieve a hexa string that can be used with bitcoind's CLI interface - * (decoderawtransaction, sendrawtransaction) - * - * @param {Object|boolean=} unsafe if true, skip all tests. if it's an object, - * it's expected to contain a set of flags to skip certain tests: - * * `disableAll`: disable all checks - * * `disableSmallFees`: disable checking for fees that are too small - * * `disableLargeFees`: disable checking for fees that are too large - * * `disableIsFullySigned`: disable checking if all inputs are fully signed - * * `disableDustOutputs`: disable checking if there are no outputs that are dust amounts - * * `disableMoreOutputThanInput`: disable checking if the transaction spends more bitcoins than the sum of the input amounts - * @return {string} - */ -Transaction.prototype.serialize = function(unsafe) { - if (true === unsafe || unsafe && unsafe.disableAll) { - return this.uncheckedSerialize(); - } else { - return this.checkedSerialize(unsafe); - } -}; + /** + * The base implementation of `_.nth` which doesn't coerce arguments. + * + * @private + * @param {Array} array The array to query. + * @param {number} n The index of the element to return. + * @returns {*} Returns the nth element of `array`. + */ + function baseNth(array, n) { + var length = array.length; + if (!length) { + return; + } + n += n < 0 ? length : 0; + return isIndex(n, length) ? array[n] : undefined; + } -Transaction.prototype.uncheckedSerialize = Transaction.prototype.toString = function() { - return this.toBuffer().toString('hex'); -}; + /** + * The base implementation of `_.orderBy` without param guards. + * + * @private + * @param {Array|Object} collection The collection to iterate over. + * @param {Function[]|Object[]|string[]} iteratees The iteratees to sort by. + * @param {string[]} orders The sort orders of `iteratees`. + * @returns {Array} Returns the new sorted array. + */ + function baseOrderBy(collection, iteratees, orders) { + var index = -1; + iteratees = arrayMap(iteratees.length ? iteratees : [identity], baseUnary(getIteratee())); -/** - * Retrieve a hexa string that can be used with bitcoind's CLI interface - * (decoderawtransaction, sendrawtransaction) - * - * @param {Object} opts allows to skip certain tests. {@see Transaction#serialize} - * @return {string} - */ -Transaction.prototype.checkedSerialize = function(opts) { - var serializationError = this.getSerializationError(opts); - if (serializationError) { - serializationError.message += ' - For more information please see: ' + - 'https://bitcore.io/api/lib/transaction#serialization-checks'; - throw serializationError; - } - return this.uncheckedSerialize(); -}; + var result = baseMap(collection, function(value, key, collection) { + var criteria = arrayMap(iteratees, function(iteratee) { + return iteratee(value); + }); + return { 'criteria': criteria, 'index': ++index, 'value': value }; + }); -Transaction.prototype.invalidSatoshis = function() { - var invalid = false; - for (var i = 0; i < this.outputs.length; i++) { - if (this.outputs[i].invalidSatoshis()) { - invalid = true; + return baseSortBy(result, function(object, other) { + return compareMultiple(object, other, orders); + }); } - } - return invalid; -}; -/** - * Retrieve a possible error that could appear when trying to serialize and - * broadcast this transaction. - * - * @param {Object} opts allows to skip certain tests. {@see Transaction#serialize} - * @return {bitcore.Error} - */ -Transaction.prototype.getSerializationError = function(opts) { - opts = opts || {}; + /** + * The base implementation of `_.pick` without support for individual + * property identifiers. + * + * @private + * @param {Object} object The source object. + * @param {string[]} paths The property paths to pick. + * @returns {Object} Returns the new object. + */ + function basePick(object, paths) { + return basePickBy(object, paths, function(value, path) { + return hasIn(object, path); + }); + } - if (this.invalidSatoshis()) { - return new errors.Transaction.InvalidSatoshis(); - } + /** + * The base implementation of `_.pickBy` without support for iteratee shorthands. + * + * @private + * @param {Object} object The source object. + * @param {string[]} paths The property paths to pick. + * @param {Function} predicate The function invoked per property. + * @returns {Object} Returns the new object. + */ + function basePickBy(object, paths, predicate) { + var index = -1, + length = paths.length, + result = {}; - var unspent = this._getUnspentValue(); - var unspentError; - if (unspent < 0) { - if (!opts.disableMoreOutputThanInput) { - unspentError = new errors.Transaction.InvalidOutputAmountSum(); + while (++index < length) { + var path = paths[index], + value = baseGet(object, path); + + if (predicate(value, path)) { + baseSet(result, castPath(path, object), value); + } + } + return result; } - } else { - unspentError = this._hasFeeError(opts, unspent); - } - return unspentError || - this._hasDustOutputs(opts) || - this._isMissingSignatures(opts); -}; + /** + * A specialized version of `baseProperty` which supports deep paths. + * + * @private + * @param {Array|string} path The path of the property to get. + * @returns {Function} Returns the new accessor function. + */ + function basePropertyDeep(path) { + return function(object) { + return baseGet(object, path); + }; + } -Transaction.prototype._hasFeeError = function(opts, unspent) { + /** + * The base implementation of `_.pullAllBy` without support for iteratee + * shorthands. + * + * @private + * @param {Array} array The array to modify. + * @param {Array} values The values to remove. + * @param {Function} [iteratee] The iteratee invoked per element. + * @param {Function} [comparator] The comparator invoked per element. + * @returns {Array} Returns `array`. + */ + function basePullAll(array, values, iteratee, comparator) { + var indexOf = comparator ? baseIndexOfWith : baseIndexOf, + index = -1, + length = values.length, + seen = array; + + if (array === values) { + values = copyArray(values); + } + if (iteratee) { + seen = arrayMap(array, baseUnary(iteratee)); + } + while (++index < length) { + var fromIndex = 0, + value = values[index], + computed = iteratee ? iteratee(value) : value; + + while ((fromIndex = indexOf(seen, computed, fromIndex, comparator)) > -1) { + if (seen !== array) { + splice.call(seen, fromIndex, 1); + } + splice.call(array, fromIndex, 1); + } + } + return array; + } - if (!_.isUndefined(this._fee) && this._fee !== unspent) { - return new errors.Transaction.FeeError.Different( - 'Unspent value is ' + unspent + ' but specified fee is ' + this._fee - ); - } + /** + * The base implementation of `_.pullAt` without support for individual + * indexes or capturing the removed elements. + * + * @private + * @param {Array} array The array to modify. + * @param {number[]} indexes The indexes of elements to remove. + * @returns {Array} Returns `array`. + */ + function basePullAt(array, indexes) { + var length = array ? indexes.length : 0, + lastIndex = length - 1; - if (!opts.disableLargeFees) { - var maximumFee = Math.floor(Transaction.FEE_SECURITY_MARGIN * this._estimateFee()); - if (unspent > maximumFee) { - if (this._missingChange()) { - return new errors.Transaction.ChangeAddressMissing( - 'Fee is too large and no change address was provided' - ); + while (length--) { + var index = indexes[length]; + if (length == lastIndex || index !== previous) { + var previous = index; + if (isIndex(index)) { + splice.call(array, index, 1); + } else { + baseUnset(array, index); + } + } } - return new errors.Transaction.FeeError.TooLarge( - 'expected less than ' + maximumFee + ' but got ' + unspent - ); + return array; } - } - if (!opts.disableSmallFees) { - var minimumFee = Math.ceil(this._estimateFee() / Transaction.FEE_SECURITY_MARGIN); - if (unspent < minimumFee) { - return new errors.Transaction.FeeError.TooSmall( - 'expected more than ' + minimumFee + ' but got ' + unspent - ); + /** + * The base implementation of `_.random` without support for returning + * floating-point numbers. + * + * @private + * @param {number} lower The lower bound. + * @param {number} upper The upper bound. + * @returns {number} Returns the random number. + */ + function baseRandom(lower, upper) { + return lower + nativeFloor(nativeRandom() * (upper - lower + 1)); } - } -}; -Transaction.prototype._missingChange = function() { - return !this._changeScript; -}; + /** + * The base implementation of `_.range` and `_.rangeRight` which doesn't + * coerce arguments. + * + * @private + * @param {number} start The start of the range. + * @param {number} end The end of the range. + * @param {number} step The value to increment or decrement by. + * @param {boolean} [fromRight] Specify iterating from right to left. + * @returns {Array} Returns the range of numbers. + */ + function baseRange(start, end, step, fromRight) { + var index = -1, + length = nativeMax(nativeCeil((end - start) / (step || 1)), 0), + result = Array(length); -Transaction.prototype._hasDustOutputs = function(opts) { - if (opts.disableDustOutputs) { - return; - } - var index, output; - for (index in this.outputs) { - output = this.outputs[index]; - if (output.satoshis < Transaction.DUST_AMOUNT && !output.script.isDataOut()) { - return new errors.Transaction.DustOutputs(); + while (length--) { + result[fromRight ? length : ++index] = start; + start += step; + } + return result; } - } -}; - -Transaction.prototype._isMissingSignatures = function(opts) { - if (opts.disableIsFullySigned) { - return; - } - if (!this.isFullySigned()) { - return new errors.Transaction.MissingSignatures(); - } -}; - -Transaction.prototype.inspect = function() { - return ''; -}; -Transaction.prototype.toBuffer = function(noWitness) { - var writer = new BufferWriter(); - return this.toBufferWriter(writer, noWitness).toBuffer(); -}; + /** + * The base implementation of `_.repeat` which doesn't coerce arguments. + * + * @private + * @param {string} string The string to repeat. + * @param {number} n The number of times to repeat the string. + * @returns {string} Returns the repeated string. + */ + function baseRepeat(string, n) { + var result = ''; + if (!string || n < 1 || n > MAX_SAFE_INTEGER) { + return result; + } + // Leverage the exponentiation by squaring algorithm for a faster repeat. + // See https://en.wikipedia.org/wiki/Exponentiation_by_squaring for more details. + do { + if (n % 2) { + result += string; + } + n = nativeFloor(n / 2); + if (n) { + string += string; + } + } while (n); -Transaction.prototype.hasWitnesses = function() { - for (var i = 0; i < this.inputs.length; i++) { - if (this.inputs[i].hasWitnesses()) { - return true; + return result; } - } - return false; -}; -Transaction.prototype.toBufferWriter = function(writer, noWitness) { - writer.writeInt32LE(this.version); + /** + * The base implementation of `_.rest` which doesn't validate or coerce arguments. + * + * @private + * @param {Function} func The function to apply a rest parameter to. + * @param {number} [start=func.length-1] The start position of the rest parameter. + * @returns {Function} Returns the new function. + */ + function baseRest(func, start) { + return setToString(overRest(func, start, identity), func + ''); + } - var hasWitnesses = this.hasWitnesses(); + /** + * The base implementation of `_.sample`. + * + * @private + * @param {Array|Object} collection The collection to sample. + * @returns {*} Returns the random element. + */ + function baseSample(collection) { + return arraySample(values(collection)); + } - if (hasWitnesses && !noWitness) { - writer.write(new Buffer('0001', 'hex')); - } + /** + * The base implementation of `_.sampleSize` without param guards. + * + * @private + * @param {Array|Object} collection The collection to sample. + * @param {number} n The number of elements to sample. + * @returns {Array} Returns the random elements. + */ + function baseSampleSize(collection, n) { + var array = values(collection); + return shuffleSelf(array, baseClamp(n, 0, array.length)); + } - writer.writeVarintNum(this.inputs.length); + /** + * The base implementation of `_.set`. + * + * @private + * @param {Object} object The object to modify. + * @param {Array|string} path The path of the property to set. + * @param {*} value The value to set. + * @param {Function} [customizer] The function to customize path creation. + * @returns {Object} Returns `object`. + */ + function baseSet(object, path, value, customizer) { + if (!isObject(object)) { + return object; + } + path = castPath(path, object); - _.each(this.inputs, function(input) { - input.toBufferWriter(writer); - }); + var index = -1, + length = path.length, + lastIndex = length - 1, + nested = object; - writer.writeVarintNum(this.outputs.length); - _.each(this.outputs, function(output) { - output.toBufferWriter(writer); - }); + while (nested != null && ++index < length) { + var key = toKey(path[index]), + newValue = value; - if (hasWitnesses && !noWitness) { - _.each(this.inputs, function(input) { - var witnesses = input.getWitnesses(); - writer.writeVarintNum(witnesses.length); - for (var j = 0; j < witnesses.length; j++) { - writer.writeVarintNum(witnesses[j].length); - writer.write(witnesses[j]); + if (index != lastIndex) { + var objValue = nested[key]; + newValue = customizer ? customizer(objValue, key, nested) : undefined; + if (newValue === undefined) { + newValue = isObject(objValue) + ? objValue + : (isIndex(path[index + 1]) ? [] : {}); + } + } + assignValue(nested, key, newValue); + nested = nested[key]; } - }); - } - - writer.writeUInt32LE(this.nLockTime); - return writer; -}; - -Transaction.prototype.fromBuffer = function(buffer) { - var reader = new BufferReader(buffer); - return this.fromBufferReader(reader); -}; + return object; + } -Transaction.prototype.fromBufferReader = function(reader) { - $.checkArgument(!reader.finished(), 'No transaction data received'); + /** + * The base implementation of `setData` without support for hot loop shorting. + * + * @private + * @param {Function} func The function to associate metadata with. + * @param {*} data The metadata. + * @returns {Function} Returns `func`. + */ + var baseSetData = !metaMap ? identity : function(func, data) { + metaMap.set(func, data); + return func; + }; - this.version = reader.readInt32LE(); - var sizeTxIns = reader.readVarintNum(); + /** + * The base implementation of `setToString` without support for hot loop shorting. + * + * @private + * @param {Function} func The function to modify. + * @param {Function} string The `toString` result. + * @returns {Function} Returns `func`. + */ + var baseSetToString = !defineProperty ? identity : function(func, string) { + return defineProperty(func, 'toString', { + 'configurable': true, + 'enumerable': false, + 'value': constant(string), + 'writable': true + }); + }; - // check for segwit - var hasWitnesses = false; - if (sizeTxIns === 0 && reader.buf[reader.pos] !== 0) { - reader.pos += 1; - hasWitnesses = true; - sizeTxIns = reader.readVarintNum(); - } + /** + * The base implementation of `_.shuffle`. + * + * @private + * @param {Array|Object} collection The collection to shuffle. + * @returns {Array} Returns the new shuffled array. + */ + function baseShuffle(collection) { + return shuffleSelf(values(collection)); + } - for (var i = 0; i < sizeTxIns; i++) { - var input = Input.fromBufferReader(reader); - this.inputs.push(input); - } + /** + * The base implementation of `_.slice` without an iteratee call guard. + * + * @private + * @param {Array} array The array to slice. + * @param {number} [start=0] The start position. + * @param {number} [end=array.length] The end position. + * @returns {Array} Returns the slice of `array`. + */ + function baseSlice(array, start, end) { + var index = -1, + length = array.length; - var sizeTxOuts = reader.readVarintNum(); - for (var j = 0; j < sizeTxOuts; j++) { - this.outputs.push(Output.fromBufferReader(reader)); - } + if (start < 0) { + start = -start > length ? 0 : (length + start); + } + end = end > length ? length : end; + if (end < 0) { + end += length; + } + length = start > end ? 0 : ((end - start) >>> 0); + start >>>= 0; - if (hasWitnesses) { - for (var k = 0; k < sizeTxIns; k++) { - var itemCount = reader.readVarintNum(); - var witnesses = []; - for (var l = 0; l < itemCount; l++) { - var size = reader.readVarintNum(); - var item = reader.read(size); - witnesses.push(item); + var result = Array(length); + while (++index < length) { + result[index] = array[index + start]; } - this.inputs[k].setWitnesses(witnesses); + return result; } - } - this.nLockTime = reader.readUInt32LE(); - return this; -}; + /** + * The base implementation of `_.some` without support for iteratee shorthands. + * + * @private + * @param {Array|Object} collection The collection to iterate over. + * @param {Function} predicate The function invoked per iteration. + * @returns {boolean} Returns `true` if any element passes the predicate check, + * else `false`. + */ + function baseSome(collection, predicate) { + var result; + baseEach(collection, function(value, index, collection) { + result = predicate(value, index, collection); + return !result; + }); + return !!result; + } -Transaction.prototype.toObject = Transaction.prototype.toJSON = function toObject() { - var inputs = []; - this.inputs.forEach(function(input) { - inputs.push(input.toObject()); - }); - var outputs = []; - this.outputs.forEach(function(output) { - outputs.push(output.toObject()); - }); - var obj = { - hash: this.hash, - version: this.version, - inputs: inputs, - outputs: outputs, - nLockTime: this.nLockTime - }; - if (this._changeScript) { - obj.changeScript = this._changeScript.toString(); - } - if (!_.isUndefined(this._changeIndex)) { - obj.changeIndex = this._changeIndex; - } - if (!_.isUndefined(this._fee)) { - obj.fee = this._fee; - } - return obj; -}; + /** + * The base implementation of `_.sortedIndex` and `_.sortedLastIndex` which + * performs a binary search of `array` to determine the index at which `value` + * should be inserted into `array` in order to maintain its sort order. + * + * @private + * @param {Array} array The sorted array to inspect. + * @param {*} value The value to evaluate. + * @param {boolean} [retHighest] Specify returning the highest qualified index. + * @returns {number} Returns the index at which `value` should be inserted + * into `array`. + */ + function baseSortedIndex(array, value, retHighest) { + var low = 0, + high = array == null ? low : array.length; -Transaction.prototype.fromObject = function fromObject(arg) { - /* jshint maxstatements: 20 */ - $.checkArgument(_.isObject(arg) || arg instanceof Transaction); - var self = this; - var transaction; - if (arg instanceof Transaction) { - transaction = transaction.toObject(); - } else { - transaction = arg; - } - _.each(transaction.inputs, function(input) { - if (!input.output || !input.output.script) { - self.uncheckedAddInput(new Input(input)); - return; - } - var script = new Script(input.output.script); - var txin; - if (script.isPublicKeyHashOut()) { - txin = new Input.PublicKeyHash(input); - } else if (script.isScriptHashOut() && input.publicKeys && input.threshold) { - txin = new Input.MultiSigScriptHash( - input, input.publicKeys, input.threshold, input.signatures - ); - } else if (script.isPublicKeyOut()) { - txin = new Input.PublicKey(input); - } else { - throw new errors.Transaction.Input.UnsupportedScript(input.output.script); + if (typeof value == 'number' && value === value && high <= HALF_MAX_ARRAY_LENGTH) { + while (low < high) { + var mid = (low + high) >>> 1, + computed = array[mid]; + + if (computed !== null && !isSymbol(computed) && + (retHighest ? (computed <= value) : (computed < value))) { + low = mid + 1; + } else { + high = mid; + } + } + return high; + } + return baseSortedIndexBy(array, value, identity, retHighest); } - self.addInput(txin); - }); - _.each(transaction.outputs, function(output) { - self.addOutput(new Output(output)); - }); - if (transaction.changeIndex) { - this._changeIndex = transaction.changeIndex; - } - if (transaction.changeScript) { - this._changeScript = new Script(transaction.changeScript); - } - if (transaction.fee) { - this._fee = transaction.fee; - } - this.nLockTime = transaction.nLockTime; - this.version = transaction.version; - this._checkConsistency(arg); - return this; -}; -Transaction.prototype._checkConsistency = function(arg) { - if (!_.isUndefined(this._changeIndex)) { - $.checkState(this._changeScript, 'Change script is expected.'); - $.checkState(this.outputs[this._changeIndex], 'Change index points to undefined output.'); - $.checkState(this.outputs[this._changeIndex].script.toString() === - this._changeScript.toString(), 'Change output has an unexpected script.'); - } - if (arg && arg.hash) { - $.checkState(arg.hash === this.hash, 'Hash in object does not match transaction hash.'); - } -}; + /** + * The base implementation of `_.sortedIndexBy` and `_.sortedLastIndexBy` + * which invokes `iteratee` for `value` and each element of `array` to compute + * their sort ranking. The iteratee is invoked with one argument; (value). + * + * @private + * @param {Array} array The sorted array to inspect. + * @param {*} value The value to evaluate. + * @param {Function} iteratee The iteratee invoked per element. + * @param {boolean} [retHighest] Specify returning the highest qualified index. + * @returns {number} Returns the index at which `value` should be inserted + * into `array`. + */ + function baseSortedIndexBy(array, value, iteratee, retHighest) { + value = iteratee(value); -/** - * Sets nLockTime so that transaction is not valid until the desired date(a - * timestamp in seconds since UNIX epoch is also accepted) - * - * @param {Date | Number} time - * @return {Transaction} this - */ -Transaction.prototype.lockUntilDate = function(time) { - $.checkArgument(time); - if (_.isNumber(time) && time < Transaction.NLOCKTIME_BLOCKHEIGHT_LIMIT) { - throw new errors.Transaction.LockTimeTooEarly(); - } - if (_.isDate(time)) { - time = time.getTime() / 1000; - } + var low = 0, + high = array == null ? 0 : array.length, + valIsNaN = value !== value, + valIsNull = value === null, + valIsSymbol = isSymbol(value), + valIsUndefined = value === undefined; - for (var i = 0; i < this.inputs.length; i++) { - if (this.inputs[i].sequenceNumber === Input.DEFAULT_SEQNUMBER){ - this.inputs[i].sequenceNumber = Input.DEFAULT_LOCKTIME_SEQNUMBER; + while (low < high) { + var mid = nativeFloor((low + high) / 2), + computed = iteratee(array[mid]), + othIsDefined = computed !== undefined, + othIsNull = computed === null, + othIsReflexive = computed === computed, + othIsSymbol = isSymbol(computed); + + if (valIsNaN) { + var setLow = retHighest || othIsReflexive; + } else if (valIsUndefined) { + setLow = othIsReflexive && (retHighest || othIsDefined); + } else if (valIsNull) { + setLow = othIsReflexive && othIsDefined && (retHighest || !othIsNull); + } else if (valIsSymbol) { + setLow = othIsReflexive && othIsDefined && !othIsNull && (retHighest || !othIsSymbol); + } else if (othIsNull || othIsSymbol) { + setLow = false; + } else { + setLow = retHighest ? (computed <= value) : (computed < value); + } + if (setLow) { + low = mid + 1; + } else { + high = mid; + } + } + return nativeMin(high, MAX_ARRAY_INDEX); } - } - this.nLockTime = time; - return this; -}; + /** + * The base implementation of `_.sortedUniq` and `_.sortedUniqBy` without + * support for iteratee shorthands. + * + * @private + * @param {Array} array The array to inspect. + * @param {Function} [iteratee] The iteratee invoked per element. + * @returns {Array} Returns the new duplicate free array. + */ + function baseSortedUniq(array, iteratee) { + var index = -1, + length = array.length, + resIndex = 0, + result = []; -/** - * Sets nLockTime so that transaction is not valid until the desired block - * height. - * - * @param {Number} height - * @return {Transaction} this - */ -Transaction.prototype.lockUntilBlockHeight = function(height) { - $.checkArgument(_.isNumber(height)); - if (height >= Transaction.NLOCKTIME_BLOCKHEIGHT_LIMIT) { - throw new errors.Transaction.BlockHeightTooHigh(); - } - if (height < 0) { - throw new errors.Transaction.NLockTimeOutOfRange(); - } + while (++index < length) { + var value = array[index], + computed = iteratee ? iteratee(value) : value; - for (var i = 0; i < this.inputs.length; i++) { - if (this.inputs[i].sequenceNumber === Input.DEFAULT_SEQNUMBER){ - this.inputs[i].sequenceNumber = Input.DEFAULT_LOCKTIME_SEQNUMBER; + if (!index || !eq(computed, seen)) { + var seen = computed; + result[resIndex++] = value === 0 ? 0 : value; + } + } + return result; } - } + /** + * The base implementation of `_.toNumber` which doesn't ensure correct + * conversions of binary, hexadecimal, or octal string values. + * + * @private + * @param {*} value The value to process. + * @returns {number} Returns the number. + */ + function baseToNumber(value) { + if (typeof value == 'number') { + return value; + } + if (isSymbol(value)) { + return NAN; + } + return +value; + } - this.nLockTime = height; - return this; -}; + /** + * The base implementation of `_.toString` which doesn't convert nullish + * values to empty strings. + * + * @private + * @param {*} value The value to process. + * @returns {string} Returns the string. + */ + function baseToString(value) { + // Exit early for strings to avoid a performance hit in some environments. + if (typeof value == 'string') { + return value; + } + if (isArray(value)) { + // Recursively convert values (susceptible to call stack limits). + return arrayMap(value, baseToString) + ''; + } + if (isSymbol(value)) { + return symbolToString ? symbolToString.call(value) : ''; + } + var result = (value + ''); + return (result == '0' && (1 / value) == -INFINITY) ? '-0' : result; + } -/** - * Returns a semantic version of the transaction's nLockTime. - * @return {Number|Date} - * If nLockTime is 0, it returns null, - * if it is < 500000000, it returns a block height (number) - * else it returns a Date object. - */ -Transaction.prototype.getLockTime = function() { - if (!this.nLockTime) { - return null; - } - if (this.nLockTime < Transaction.NLOCKTIME_BLOCKHEIGHT_LIMIT) { - return this.nLockTime; - } - return new Date(1000 * this.nLockTime); -}; + /** + * The base implementation of `_.uniqBy` without support for iteratee shorthands. + * + * @private + * @param {Array} array The array to inspect. + * @param {Function} [iteratee] The iteratee invoked per element. + * @param {Function} [comparator] The comparator invoked per element. + * @returns {Array} Returns the new duplicate free array. + */ + function baseUniq(array, iteratee, comparator) { + var index = -1, + includes = arrayIncludes, + length = array.length, + isCommon = true, + result = [], + seen = result; -Transaction.prototype.fromString = function(string) { - this.fromBuffer(buffer.Buffer.from(string, 'hex')); -}; + if (comparator) { + isCommon = false; + includes = arrayIncludesWith; + } + else if (length >= LARGE_ARRAY_SIZE) { + var set = iteratee ? null : createSet(array); + if (set) { + return setToArray(set); + } + isCommon = false; + includes = cacheHas; + seen = new SetCache; + } + else { + seen = iteratee ? [] : result; + } + outer: + while (++index < length) { + var value = array[index], + computed = iteratee ? iteratee(value) : value; -Transaction.prototype._newTransaction = function() { - this.version = CURRENT_VERSION; - this.nLockTime = DEFAULT_NLOCKTIME; -}; + value = (comparator || value !== 0) ? value : 0; + if (isCommon && computed === computed) { + var seenIndex = seen.length; + while (seenIndex--) { + if (seen[seenIndex] === computed) { + continue outer; + } + } + if (iteratee) { + seen.push(computed); + } + result.push(value); + } + else if (!includes(seen, computed, comparator)) { + if (seen !== result) { + seen.push(computed); + } + result.push(value); + } + } + return result; + } -/* Transaction creation interface */ + /** + * The base implementation of `_.unset`. + * + * @private + * @param {Object} object The object to modify. + * @param {Array|string} path The property path to unset. + * @returns {boolean} Returns `true` if the property is deleted, else `false`. + */ + function baseUnset(object, path) { + path = castPath(path, object); + object = parent(object, path); + return object == null || delete object[toKey(last(path))]; + } -/** - * @typedef {Object} Transaction~fromObject - * @property {string} prevTxId - * @property {number} outputIndex - * @property {(Buffer|string|Script)} script - * @property {number} satoshis - */ + /** + * The base implementation of `_.update`. + * + * @private + * @param {Object} object The object to modify. + * @param {Array|string} path The path of the property to update. + * @param {Function} updater The function to produce the updated value. + * @param {Function} [customizer] The function to customize path creation. + * @returns {Object} Returns `object`. + */ + function baseUpdate(object, path, updater, customizer) { + return baseSet(object, path, updater(baseGet(object, path)), customizer); + } -/** - * Add an input to this transaction. This is a high level interface - * to add an input, for more control, use @{link Transaction#addInput}. - * - * Can receive, as output information, the output of bitcoind's `listunspent` command, - * and a slightly fancier format recognized by bitcore: - * - * ``` - * { - * address: 'mszYqVnqKoQx4jcTdJXxwKAissE3Jbrrc1', - * txId: 'a477af6b2667c29670467e4e0728b685ee07b240235771862318e29ddbe58458', - * outputIndex: 0, - * script: Script.empty(), - * satoshis: 1020000 - * } - * ``` - * Where `address` can be either a string or a bitcore Address object. The - * same is true for `script`, which can be a string or a bitcore Script. - * - * Beware that this resets all the signatures for inputs (in further versions, - * SIGHASH_SINGLE or SIGHASH_NONE signatures will not be reset). - * - * @example - * ```javascript - * var transaction = new Transaction(); - * - * // From a pay to public key hash output from bitcoind's listunspent - * transaction.from({'txid': '0000...', vout: 0, amount: 0.1, scriptPubKey: 'OP_DUP ...'}); - * - * // From a pay to public key hash output - * transaction.from({'txId': '0000...', outputIndex: 0, satoshis: 1000, script: 'OP_DUP ...'}); - * - * // From a multisig P2SH output - * transaction.from({'txId': '0000...', inputIndex: 0, satoshis: 1000, script: '... OP_HASH'}, - * ['03000...', '02000...'], 2); - * ``` - * - * @param {(Array.|Transaction~fromObject)} utxo - * @param {Array=} pubkeys - * @param {number=} threshold - * @param {boolean=} nestedWitness - Indicates that the utxo is nested witness p2sh - * @param {Object=} opts - Several options: - * - noSorting: defaults to false, if true and is multisig, don't - * sort the given public keys before creating the script - */ -Transaction.prototype.from = function(utxo, pubkeys, threshold, nestedWitness, opts) { - if (_.isArray(utxo)) { - var self = this; - _.each(utxo, function(utxo) { - self.from(utxo, pubkeys, threshold); - }); - return this; - } - var exists = _.some(this.inputs, function(input) { - // TODO: Maybe prevTxId should be a string? Or defined as read only property? - return input.prevTxId.toString('hex') === utxo.txId && input.outputIndex === utxo.outputIndex; - }); - if (exists) { - return this; - } - if (pubkeys && threshold) { - this._fromMultisigUtxo(utxo, pubkeys, threshold, nestedWitness, opts); - } else { - this._fromNonP2SH(utxo); - } - return this; -}; + /** + * The base implementation of methods like `_.dropWhile` and `_.takeWhile` + * without support for iteratee shorthands. + * + * @private + * @param {Array} array The array to query. + * @param {Function} predicate The function invoked per iteration. + * @param {boolean} [isDrop] Specify dropping elements instead of taking them. + * @param {boolean} [fromRight] Specify iterating from right to left. + * @returns {Array} Returns the slice of `array`. + */ + function baseWhile(array, predicate, isDrop, fromRight) { + var length = array.length, + index = fromRight ? length : -1; -Transaction.prototype._fromNonP2SH = function(utxo) { - var clazz; - utxo = new UnspentOutput(utxo); - if (utxo.script.isPublicKeyHashOut()) { - clazz = PublicKeyHashInput; - } else if (utxo.script.isPublicKeyOut()) { - clazz = PublicKeyInput; - } else { - clazz = Input; - } - this.addInput(new clazz({ - output: new Output({ - script: utxo.script, - satoshis: utxo.satoshis - }), - prevTxId: utxo.txId, - outputIndex: utxo.outputIndex, - script: Script.empty() - })); -}; + while ((fromRight ? index-- : ++index < length) && + predicate(array[index], index, array)) {} -Transaction.prototype._fromMultisigUtxo = function(utxo, pubkeys, threshold, nestedWitness, opts) { - $.checkArgument(threshold <= pubkeys.length, - 'Number of required signatures must be greater than the number of public keys'); - var clazz; - utxo = new UnspentOutput(utxo); - if (utxo.script.isMultisigOut()) { - clazz = MultiSigInput; - } else if (utxo.script.isScriptHashOut()) { - clazz = MultiSigScriptHashInput; - } else { - throw new Error("@TODO"); - } - this.addInput(new clazz({ - output: new Output({ - script: utxo.script, - satoshis: utxo.satoshis - }), - prevTxId: utxo.txId, - outputIndex: utxo.outputIndex, - script: Script.empty() - }, pubkeys, threshold, false, nestedWitness, opts)); -}; + return isDrop + ? baseSlice(array, (fromRight ? 0 : index), (fromRight ? index + 1 : length)) + : baseSlice(array, (fromRight ? index + 1 : 0), (fromRight ? length : index)); + } -/** - * Add an input to this transaction. The input must be an instance of the `Input` class. - * It should have information about the Output that it's spending, but if it's not already - * set, two additional parameters, `outputScript` and `satoshis` can be provided. - * - * @param {Input} input - * @param {String|Script} outputScript - * @param {number} satoshis - * @return Transaction this, for chaining - */ -Transaction.prototype.addInput = function(input, outputScript, satoshis) { - $.checkArgumentType(input, Input, 'input'); - if (!input.output && (_.isUndefined(outputScript) || _.isUndefined(satoshis))) { - throw new errors.Transaction.NeedMoreInfo('Need information about the UTXO script and satoshis'); - } - if (!input.output && outputScript && !_.isUndefined(satoshis)) { - outputScript = outputScript instanceof Script ? outputScript : new Script(outputScript); - $.checkArgumentType(satoshis, 'number', 'satoshis'); - input.output = new Output({ - script: outputScript, - satoshis: satoshis - }); - } - return this.uncheckedAddInput(input); -}; + /** + * The base implementation of `wrapperValue` which returns the result of + * performing a sequence of actions on the unwrapped `value`, where each + * successive action is supplied the return value of the previous. + * + * @private + * @param {*} value The unwrapped value. + * @param {Array} actions Actions to perform to resolve the unwrapped value. + * @returns {*} Returns the resolved value. + */ + function baseWrapperValue(value, actions) { + var result = value; + if (result instanceof LazyWrapper) { + result = result.value(); + } + return arrayReduce(actions, function(result, action) { + return action.func.apply(action.thisArg, arrayPush([result], action.args)); + }, result); + } -/** - * Add an input to this transaction, without checking that the input has information about - * the output that it's spending. - * - * @param {Input} input - * @return Transaction this, for chaining - */ -Transaction.prototype.uncheckedAddInput = function(input) { - $.checkArgumentType(input, Input, 'input'); - this.inputs.push(input); - this._inputAmount = undefined; - this._updateChangeOutput(); - return this; -}; + /** + * The base implementation of methods like `_.xor`, without support for + * iteratee shorthands, that accepts an array of arrays to inspect. + * + * @private + * @param {Array} arrays The arrays to inspect. + * @param {Function} [iteratee] The iteratee invoked per element. + * @param {Function} [comparator] The comparator invoked per element. + * @returns {Array} Returns the new array of values. + */ + function baseXor(arrays, iteratee, comparator) { + var length = arrays.length; + if (length < 2) { + return length ? baseUniq(arrays[0]) : []; + } + var index = -1, + result = Array(length); -/** - * Returns true if the transaction has enough info on all inputs to be correctly validated - * - * @return {boolean} - */ -Transaction.prototype.hasAllUtxoInfo = function() { - return _.every(this.inputs.map(function(input) { - return !!input.output; - })); -}; + while (++index < length) { + var array = arrays[index], + othIndex = -1; -/** - * Manually set the fee for this transaction. Beware that this resets all the signatures - * for inputs (in further versions, SIGHASH_SINGLE or SIGHASH_NONE signatures will not - * be reset). - * - * @param {number} amount satoshis to be sent - * @return {Transaction} this, for chaining - */ -Transaction.prototype.fee = function(amount) { - $.checkArgument(_.isNumber(amount), 'amount must be a number'); - this._fee = amount; - this._updateChangeOutput(); - return this; -}; + while (++othIndex < length) { + if (othIndex != index) { + result[index] = baseDifference(result[index] || array, arrays[othIndex], iteratee, comparator); + } + } + } + return baseUniq(baseFlatten(result, 1), iteratee, comparator); + } -/** - * Manually set the fee per KB for this transaction. Beware that this resets all the signatures - * for inputs (in further versions, SIGHASH_SINGLE or SIGHASH_NONE signatures will not - * be reset). - * - * @param {number} amount satoshis per KB to be sent - * @return {Transaction} this, for chaining - */ -Transaction.prototype.feePerKb = function(amount) { - $.checkArgument(_.isNumber(amount), 'amount must be a number'); - this._feePerKb = amount; - this._updateChangeOutput(); - return this; -}; + /** + * This base implementation of `_.zipObject` which assigns values using `assignFunc`. + * + * @private + * @param {Array} props The property identifiers. + * @param {Array} values The property values. + * @param {Function} assignFunc The function to assign values. + * @returns {Object} Returns the new object. + */ + function baseZipObject(props, values, assignFunc) { + var index = -1, + length = props.length, + valsLength = values.length, + result = {}; -/** - * Manually set the fee per Byte for this transaction. Beware that this resets all the signatures - * for inputs (in further versions, SIGHASH_SINGLE or SIGHASH_NONE signatures will not - * be reset). - * fee per Byte will be ignored if fee per KB is set - * - * @param {number} amount satoshis per Byte to be sent - * @return {Transaction} this, for chaining - */ -Transaction.prototype.feePerByte = function (amount) { - $.checkArgument(_.isNumber(amount), 'amount must be a number'); - this._feePerByte = amount; - this._updateChangeOutput(); - return this; -}; + while (++index < length) { + var value = index < valsLength ? values[index] : undefined; + assignFunc(result, props[index], value); + } + return result; + } -/* Output management */ + /** + * Casts `value` to an empty array if it's not an array like object. + * + * @private + * @param {*} value The value to inspect. + * @returns {Array|Object} Returns the cast array-like object. + */ + function castArrayLikeObject(value) { + return isArrayLikeObject(value) ? value : []; + } -/** - * Set the change address for this transaction - * - * Beware that this resets all the signatures for inputs (in further versions, - * SIGHASH_SINGLE or SIGHASH_NONE signatures will not be reset). - * - * @param {Address} address An address for change to be sent to. - * @return {Transaction} this, for chaining - */ -Transaction.prototype.change = function(address) { - $.checkArgument(address, 'address is required'); - this._changeScript = Script.fromAddress(address); - this._updateChangeOutput(); - return this; -}; + /** + * Casts `value` to `identity` if it's not a function. + * + * @private + * @param {*} value The value to inspect. + * @returns {Function} Returns cast function. + */ + function castFunction(value) { + return typeof value == 'function' ? value : identity; + } + /** + * Casts `value` to a path array if it's not one. + * + * @private + * @param {*} value The value to inspect. + * @param {Object} [object] The object to query keys on. + * @returns {Array} Returns the cast property path array. + */ + function castPath(value, object) { + if (isArray(value)) { + return value; + } + return isKey(value, object) ? [value] : stringToPath(toString(value)); + } -/** - * @return {Output} change output, if it exists - */ -Transaction.prototype.getChangeOutput = function() { - if (!_.isUndefined(this._changeIndex)) { - return this.outputs[this._changeIndex]; - } - return null; -}; + /** + * A `baseRest` alias which can be replaced with `identity` by module + * replacement plugins. + * + * @private + * @type {Function} + * @param {Function} func The function to apply a rest parameter to. + * @returns {Function} Returns the new function. + */ + var castRest = baseRest; -/** - * @typedef {Object} Transaction~toObject - * @property {(string|Address)} address - * @property {number} satoshis - */ + /** + * Casts `array` to a slice if it's needed. + * + * @private + * @param {Array} array The array to inspect. + * @param {number} start The start position. + * @param {number} [end=array.length] The end position. + * @returns {Array} Returns the cast slice. + */ + function castSlice(array, start, end) { + var length = array.length; + end = end === undefined ? length : end; + return (!start && end >= length) ? array : baseSlice(array, start, end); + } -/** - * Add an output to the transaction. - * - * Beware that this resets all the signatures for inputs (in further versions, - * SIGHASH_SINGLE or SIGHASH_NONE signatures will not be reset). - * - * @param {(string|Address|Array.)} address - * @param {number} amount in satoshis - * @return {Transaction} this, for chaining - */ -Transaction.prototype.to = function(address, amount) { - if (_.isArray(address)) { - var self = this; - _.each(address, function(to) { - self.to(to.address, to.satoshis); - }); - return this; - } + /** + * A simple wrapper around the global [`clearTimeout`](https://mdn.io/clearTimeout). + * + * @private + * @param {number|Object} id The timer id or timeout object of the timer to clear. + */ + var clearTimeout = ctxClearTimeout || function(id) { + return root.clearTimeout(id); + }; - $.checkArgument( - JSUtil.isNaturalNumber(amount), - 'Amount is expected to be a positive integer' - ); - this.addOutput(new Output({ - script: Script(new Address(address)), - satoshis: amount - })); - return this; -}; + /** + * Creates a clone of `buffer`. + * + * @private + * @param {Buffer} buffer The buffer to clone. + * @param {boolean} [isDeep] Specify a deep clone. + * @returns {Buffer} Returns the cloned buffer. + */ + function cloneBuffer(buffer, isDeep) { + if (isDeep) { + return buffer.slice(); + } + var length = buffer.length, + result = allocUnsafe ? allocUnsafe(length) : new buffer.constructor(length); -/** - * Add an OP_RETURN output to the transaction. - * - * Beware that this resets all the signatures for inputs (in further versions, - * SIGHASH_SINGLE or SIGHASH_NONE signatures will not be reset). - * - * @param {Buffer|string} value the data to be stored in the OP_RETURN output. - * In case of a string, the UTF-8 representation will be stored - * @return {Transaction} this, for chaining - */ -Transaction.prototype.addData = function(value) { - this.addOutput(new Output({ - script: Script.buildDataOut(value), - satoshis: 0 - })); - return this; -}; + buffer.copy(result); + return result; + } + /** + * Creates a clone of `arrayBuffer`. + * + * @private + * @param {ArrayBuffer} arrayBuffer The array buffer to clone. + * @returns {ArrayBuffer} Returns the cloned array buffer. + */ + function cloneArrayBuffer(arrayBuffer) { + var result = new arrayBuffer.constructor(arrayBuffer.byteLength); + new Uint8Array(result).set(new Uint8Array(arrayBuffer)); + return result; + } -/** - * Add an output to the transaction. - * - * @param {Output} output the output to add. - * @return {Transaction} this, for chaining - */ -Transaction.prototype.addOutput = function(output) { - $.checkArgumentType(output, Output, 'output'); - this._addOutput(output); - this._updateChangeOutput(); - return this; -}; + /** + * Creates a clone of `dataView`. + * + * @private + * @param {Object} dataView The data view to clone. + * @param {boolean} [isDeep] Specify a deep clone. + * @returns {Object} Returns the cloned data view. + */ + function cloneDataView(dataView, isDeep) { + var buffer = isDeep ? cloneArrayBuffer(dataView.buffer) : dataView.buffer; + return new dataView.constructor(buffer, dataView.byteOffset, dataView.byteLength); + } + /** + * Creates a clone of `regexp`. + * + * @private + * @param {Object} regexp The regexp to clone. + * @returns {Object} Returns the cloned regexp. + */ + function cloneRegExp(regexp) { + var result = new regexp.constructor(regexp.source, reFlags.exec(regexp)); + result.lastIndex = regexp.lastIndex; + return result; + } -/** - * Remove all outputs from the transaction. - * - * @return {Transaction} this, for chaining - */ -Transaction.prototype.clearOutputs = function() { - this.outputs = []; - this._clearSignatures(); - this._outputAmount = undefined; - this._changeIndex = undefined; - this._updateChangeOutput(); - return this; -}; + /** + * Creates a clone of the `symbol` object. + * + * @private + * @param {Object} symbol The symbol object to clone. + * @returns {Object} Returns the cloned symbol object. + */ + function cloneSymbol(symbol) { + return symbolValueOf ? Object(symbolValueOf.call(symbol)) : {}; + } + /** + * Creates a clone of `typedArray`. + * + * @private + * @param {Object} typedArray The typed array to clone. + * @param {boolean} [isDeep] Specify a deep clone. + * @returns {Object} Returns the cloned typed array. + */ + function cloneTypedArray(typedArray, isDeep) { + var buffer = isDeep ? cloneArrayBuffer(typedArray.buffer) : typedArray.buffer; + return new typedArray.constructor(buffer, typedArray.byteOffset, typedArray.length); + } -Transaction.prototype._addOutput = function(output) { - this.outputs.push(output); - this._outputAmount = undefined; -}; + /** + * Compares values to sort them in ascending order. + * + * @private + * @param {*} value The value to compare. + * @param {*} other The other value to compare. + * @returns {number} Returns the sort order indicator for `value`. + */ + function compareAscending(value, other) { + if (value !== other) { + var valIsDefined = value !== undefined, + valIsNull = value === null, + valIsReflexive = value === value, + valIsSymbol = isSymbol(value); + var othIsDefined = other !== undefined, + othIsNull = other === null, + othIsReflexive = other === other, + othIsSymbol = isSymbol(other); -/** - * Calculates or gets the total output amount in satoshis - * - * @return {Number} the transaction total output amount - */ -Transaction.prototype._getOutputAmount = function() { - if (_.isUndefined(this._outputAmount)) { - var self = this; - this._outputAmount = 0; - _.each(this.outputs, function(output) { - self._outputAmount += output.satoshis; - }); - } - return this._outputAmount; -}; + if ((!othIsNull && !othIsSymbol && !valIsSymbol && value > other) || + (valIsSymbol && othIsDefined && othIsReflexive && !othIsNull && !othIsSymbol) || + (valIsNull && othIsDefined && othIsReflexive) || + (!valIsDefined && othIsReflexive) || + !valIsReflexive) { + return 1; + } + if ((!valIsNull && !valIsSymbol && !othIsSymbol && value < other) || + (othIsSymbol && valIsDefined && valIsReflexive && !valIsNull && !valIsSymbol) || + (othIsNull && valIsDefined && valIsReflexive) || + (!othIsDefined && valIsReflexive) || + !othIsReflexive) { + return -1; + } + } + return 0; + } + /** + * Used by `_.orderBy` to compare multiple properties of a value to another + * and stable sort them. + * + * If `orders` is unspecified, all values are sorted in ascending order. Otherwise, + * specify an order of "desc" for descending or "asc" for ascending sort order + * of corresponding values. + * + * @private + * @param {Object} object The object to compare. + * @param {Object} other The other object to compare. + * @param {boolean[]|string[]} orders The order to sort by for each property. + * @returns {number} Returns the sort order indicator for `object`. + */ + function compareMultiple(object, other, orders) { + var index = -1, + objCriteria = object.criteria, + othCriteria = other.criteria, + length = objCriteria.length, + ordersLength = orders.length; -/** - * Calculates or gets the total input amount in satoshis - * - * @return {Number} the transaction total input amount - */ -Transaction.prototype._getInputAmount = function() { - if (_.isUndefined(this._inputAmount)) { - this._inputAmount = _.sumBy(this.inputs, function(input) { - if (_.isUndefined(input.output)) { - throw new errors.Transaction.Input.MissingPreviousOutput(); + while (++index < length) { + var result = compareAscending(objCriteria[index], othCriteria[index]); + if (result) { + if (index >= ordersLength) { + return result; + } + var order = orders[index]; + return result * (order == 'desc' ? -1 : 1); + } } - return input.output.satoshis; - }); - } - return this._inputAmount; -}; + // Fixes an `Array#sort` bug in the JS engine embedded in Adobe applications + // that causes it, under certain circumstances, to provide the same value for + // `object` and `other`. See https://github.com/jashkenas/underscore/pull/1247 + // for more details. + // + // This also ensures a stable sort in V8 and other engines. + // See https://bugs.chromium.org/p/v8/issues/detail?id=90 for more details. + return object.index - other.index; + } -Transaction.prototype._updateChangeOutput = function() { - if (!this._changeScript) { - return; - } - this._clearSignatures(); - if (!_.isUndefined(this._changeIndex)) { - this._removeOutput(this._changeIndex); - } - var available = this._getUnspentValue(); - var fee = this.getFee(); - var changeAmount = available - fee; - if (changeAmount > 0) { - this._changeIndex = this.outputs.length; - this._addOutput(new Output({ - script: this._changeScript, - satoshis: changeAmount - })); - } else { - this._changeIndex = undefined; - } -}; -/** - * Calculates the fee of the transaction. - * - * If there's a fixed fee set, return that. - * - * If there is no change output set, the fee is the - * total value of the outputs minus inputs. Note that - * a serialized transaction only specifies the value - * of its outputs. (The value of inputs are recorded - * in the previous transaction outputs being spent.) - * This method therefore raises a "MissingPreviousOutput" - * error when called on a serialized transaction. - * - * If there's no fee set and no change address, - * estimate the fee based on size. - * - * @return {Number} fee of this transaction in satoshis - */ -Transaction.prototype.getFee = function() { - if (this.isCoinbase()) { - return 0; - } - if (!_.isUndefined(this._fee)) { - return this._fee; - } - // if no change output is set, fees should equal all the unspent amount - if (!this._changeScript) { - return this._getUnspentValue(); - } - return this._estimateFee(); -}; + /** + * Creates an array that is the composition of partially applied arguments, + * placeholders, and provided arguments into a single array of arguments. + * + * @private + * @param {Array} args The provided arguments. + * @param {Array} partials The arguments to prepend to those provided. + * @param {Array} holders The `partials` placeholder indexes. + * @params {boolean} [isCurried] Specify composing for a curried function. + * @returns {Array} Returns the new array of composed arguments. + */ + function composeArgs(args, partials, holders, isCurried) { + var argsIndex = -1, + argsLength = args.length, + holdersLength = holders.length, + leftIndex = -1, + leftLength = partials.length, + rangeLength = nativeMax(argsLength - holdersLength, 0), + result = Array(leftLength + rangeLength), + isUncurried = !isCurried; -/** - * Estimates fee from serialized transaction size in bytes. - */ -Transaction.prototype._estimateFee = function () { - var estimatedSize = this._estimateSize(); - var available = this._getUnspentValue(); - var feeRate = this._feePerByte || (this._feePerKb || Transaction.FEE_PER_KB) / 1000; - function getFee(size) { - return size * feeRate; - } - var fee = Math.ceil(getFee(estimatedSize)); - var feeWithChange = Math.ceil(getFee(estimatedSize) + getFee(Transaction.CHANGE_OUTPUT_MAX_SIZE)); - if (!this._changeScript || available <= feeWithChange) { - return fee; - } - return feeWithChange; -}; + while (++leftIndex < leftLength) { + result[leftIndex] = partials[leftIndex]; + } + while (++argsIndex < holdersLength) { + if (isUncurried || argsIndex < argsLength) { + result[holders[argsIndex]] = args[argsIndex]; + } + } + while (rangeLength--) { + result[leftIndex++] = args[argsIndex++]; + } + return result; + } -Transaction.prototype._getUnspentValue = function() { - return this._getInputAmount() - this._getOutputAmount(); -}; + /** + * This function is like `composeArgs` except that the arguments composition + * is tailored for `_.partialRight`. + * + * @private + * @param {Array} args The provided arguments. + * @param {Array} partials The arguments to append to those provided. + * @param {Array} holders The `partials` placeholder indexes. + * @params {boolean} [isCurried] Specify composing for a curried function. + * @returns {Array} Returns the new array of composed arguments. + */ + function composeArgsRight(args, partials, holders, isCurried) { + var argsIndex = -1, + argsLength = args.length, + holdersIndex = -1, + holdersLength = holders.length, + rightIndex = -1, + rightLength = partials.length, + rangeLength = nativeMax(argsLength - holdersLength, 0), + result = Array(rangeLength + rightLength), + isUncurried = !isCurried; -Transaction.prototype._clearSignatures = function() { - _.each(this.inputs, function(input) { - input.clearSignatures(); - }); -}; + while (++argsIndex < rangeLength) { + result[argsIndex] = args[argsIndex]; + } + var offset = argsIndex; + while (++rightIndex < rightLength) { + result[offset + rightIndex] = partials[rightIndex]; + } + while (++holdersIndex < holdersLength) { + if (isUncurried || argsIndex < argsLength) { + result[offset + holders[holdersIndex]] = args[argsIndex++]; + } + } + return result; + } -Transaction.prototype._estimateSize = function() { - var result = Transaction.MAXIMUM_EXTRA_SIZE; - _.each(this.inputs, function(input) { - result += input._estimateSize(); - }); - _.each(this.outputs, function(output) { - result += output.script.toBuffer().length + 9; - }); - return result; -}; + /** + * Copies the values of `source` to `array`. + * + * @private + * @param {Array} source The array to copy values from. + * @param {Array} [array=[]] The array to copy values to. + * @returns {Array} Returns `array`. + */ + function copyArray(source, array) { + var index = -1, + length = source.length; -Transaction.prototype._removeOutput = function(index) { - var output = this.outputs[index]; - this.outputs = _.without(this.outputs, output); - this._outputAmount = undefined; -}; + array || (array = Array(length)); + while (++index < length) { + array[index] = source[index]; + } + return array; + } -Transaction.prototype.removeOutput = function(index) { - this._removeOutput(index); - this._updateChangeOutput(); -}; + /** + * Copies properties of `source` to `object`. + * + * @private + * @param {Object} source The object to copy properties from. + * @param {Array} props The property identifiers to copy. + * @param {Object} [object={}] The object to copy properties to. + * @param {Function} [customizer] The function to customize copied values. + * @returns {Object} Returns `object`. + */ + function copyObject(source, props, object, customizer) { + var isNew = !object; + object || (object = {}); -/** - * Sort a transaction's inputs and outputs according to BIP69 - * - * @see {https://github.com/bitcoin/bips/blob/master/bip-0069.mediawiki} - * @return {Transaction} this - */ -Transaction.prototype.sort = function() { - this.sortInputs(function(inputs) { - var copy = Array.prototype.concat.apply([], inputs); - copy.sort(function(first, second) { - return compare(first.prevTxId, second.prevTxId) - || first.outputIndex - second.outputIndex; - }); - return copy; - }); - this.sortOutputs(function(outputs) { - var copy = Array.prototype.concat.apply([], outputs); - copy.sort(function(first, second) { - return first.satoshis - second.satoshis - || compare(first.script.toBuffer(), second.script.toBuffer()); - }); - return copy; - }); - return this; -}; + var index = -1, + length = props.length; -/** - * Randomize this transaction's outputs ordering. The shuffling algorithm is a - * version of the Fisher-Yates shuffle, provided by lodash's _.shuffle(). - * - * @return {Transaction} this - */ -Transaction.prototype.shuffleOutputs = function() { - return this.sortOutputs(_.shuffle); -}; + while (++index < length) { + var key = props[index]; -/** - * Sort this transaction's outputs, according to a given sorting function that - * takes an array as argument and returns a new array, with the same elements - * but with a different order. The argument function MUST NOT modify the order - * of the original array - * - * @param {Function} sortingFunction - * @return {Transaction} this - */ -Transaction.prototype.sortOutputs = function(sortingFunction) { - var outs = sortingFunction(this.outputs); - return this._newOutputOrder(outs); -}; + var newValue = customizer + ? customizer(object[key], source[key], key, object, source) + : undefined; -/** - * Sort this transaction's inputs, according to a given sorting function that - * takes an array as argument and returns a new array, with the same elements - * but with a different order. - * - * @param {Function} sortingFunction - * @return {Transaction} this - */ -Transaction.prototype.sortInputs = function(sortingFunction) { - this.inputs = sortingFunction(this.inputs); - this._clearSignatures(); - return this; -}; + if (newValue === undefined) { + newValue = source[key]; + } + if (isNew) { + baseAssignValue(object, key, newValue); + } else { + assignValue(object, key, newValue); + } + } + return object; + } -Transaction.prototype._newOutputOrder = function(newOutputs) { - var isInvalidSorting = (this.outputs.length !== newOutputs.length || - _.difference(this.outputs, newOutputs).length !== 0); - if (isInvalidSorting) { - throw new errors.Transaction.InvalidSorting(); - } + /** + * Copies own symbols of `source` to `object`. + * + * @private + * @param {Object} source The object to copy symbols from. + * @param {Object} [object={}] The object to copy symbols to. + * @returns {Object} Returns `object`. + */ + function copySymbols(source, object) { + return copyObject(source, getSymbols(source), object); + } - if (!_.isUndefined(this._changeIndex)) { - var changeOutput = this.outputs[this._changeIndex]; - this._changeIndex = _.findIndex(newOutputs, changeOutput); - } + /** + * Copies own and inherited symbols of `source` to `object`. + * + * @private + * @param {Object} source The object to copy symbols from. + * @param {Object} [object={}] The object to copy symbols to. + * @returns {Object} Returns `object`. + */ + function copySymbolsIn(source, object) { + return copyObject(source, getSymbolsIn(source), object); + } - this.outputs = newOutputs; - return this; -}; + /** + * Creates a function like `_.groupBy`. + * + * @private + * @param {Function} setter The function to set accumulator values. + * @param {Function} [initializer] The accumulator object initializer. + * @returns {Function} Returns the new aggregator function. + */ + function createAggregator(setter, initializer) { + return function(collection, iteratee) { + var func = isArray(collection) ? arrayAggregator : baseAggregator, + accumulator = initializer ? initializer() : {}; -Transaction.prototype.removeInput = function(txId, outputIndex) { - var index; - if (!outputIndex && _.isNumber(txId)) { - index = txId; - } else { - index = _.findIndex(this.inputs, function(input) { - return input.prevTxId.toString('hex') === txId && input.outputIndex === outputIndex; - }); - } - if (index < 0 || index >= this.inputs.length) { - throw new errors.Transaction.InvalidIndex(index, this.inputs.length); - } - var input = this.inputs[index]; - this.inputs = _.without(this.inputs, input); - this._inputAmount = undefined; - this._updateChangeOutput(); -}; + return func(collection, setter, getIteratee(iteratee, 2), accumulator); + }; + } -/* Signature handling */ + /** + * Creates a function like `_.assign`. + * + * @private + * @param {Function} assigner The function to assign values. + * @returns {Function} Returns the new assigner function. + */ + function createAssigner(assigner) { + return baseRest(function(object, sources) { + var index = -1, + length = sources.length, + customizer = length > 1 ? sources[length - 1] : undefined, + guard = length > 2 ? sources[2] : undefined; -/** - * Sign the transaction using one or more private keys. - * - * It tries to sign each input, verifying that the signature will be valid - * (matches a public key). - * - * @param {Array|String|PrivateKey} privateKey - * @param {number} sigtype - * @return {Transaction} this, for chaining - */ -Transaction.prototype.sign = function(privateKey, sigtype) { - $.checkState(this.hasAllUtxoInfo(), 'Not all utxo information is available to sign the transaction.'); - var self = this; - if (_.isArray(privateKey)) { - _.each(privateKey, function(privateKey) { - self.sign(privateKey, sigtype); - }); - return this; - } - _.each(this.getSignatures(privateKey, sigtype), function(signature) { - self.applySignature(signature); - }); - return this; -}; + customizer = (assigner.length > 3 && typeof customizer == 'function') + ? (length--, customizer) + : undefined; -Transaction.prototype.getSignatures = function(privKey, sigtype) { - privKey = new PrivateKey(privKey); - sigtype = sigtype || Signature.SIGHASH_ALL; - var transaction = this; - var results = []; - var hashData = Hash.sha256ripemd160(privKey.publicKey.toBuffer()); - _.each(this.inputs, function forEachInput(input, index) { - _.each(input.getSignatures(transaction, privKey, index, sigtype, hashData), function(signature) { - results.push(signature); - }); - }); - return results; -}; + if (guard && isIterateeCall(sources[0], sources[1], guard)) { + customizer = length < 3 ? undefined : customizer; + length = 1; + } + object = Object(object); + while (++index < length) { + var source = sources[index]; + if (source) { + assigner(object, source, index, customizer); + } + } + return object; + }); + } -/** - * Add a signature to the transaction - * - * @param {Object} signature - * @param {number} signature.inputIndex - * @param {number} signature.sigtype - * @param {PublicKey} signature.publicKey - * @param {Signature} signature.signature - * @return {Transaction} this, for chaining - */ -Transaction.prototype.applySignature = function(signature) { - this.inputs[signature.inputIndex].addSignature(this, signature); - return this; -}; + /** + * Creates a `baseEach` or `baseEachRight` function. + * + * @private + * @param {Function} eachFunc The function to iterate over a collection. + * @param {boolean} [fromRight] Specify iterating from right to left. + * @returns {Function} Returns the new base function. + */ + function createBaseEach(eachFunc, fromRight) { + return function(collection, iteratee) { + if (collection == null) { + return collection; + } + if (!isArrayLike(collection)) { + return eachFunc(collection, iteratee); + } + var length = collection.length, + index = fromRight ? length : -1, + iterable = Object(collection); -Transaction.prototype.isFullySigned = function() { - _.each(this.inputs, function(input) { - if (input.isFullySigned === Input.prototype.isFullySigned) { - throw new errors.Transaction.UnableToVerifySignature( - 'Unrecognized script kind, or not enough information to execute script.' + - 'This usually happens when creating a transaction from a serialized transaction' - ); + while ((fromRight ? index-- : ++index < length)) { + if (iteratee(iterable[index], index, iterable) === false) { + break; + } + } + return collection; + }; } - }); - return _.every(_.map(this.inputs, function(input) { - return input.isFullySigned(); - })); -}; - -Transaction.prototype.isValidSignature = function(signature) { - var self = this; - if (this.inputs[signature.inputIndex].isValidSignature === Input.prototype.isValidSignature) { - throw new errors.Transaction.UnableToVerifySignature( - 'Unrecognized script kind, or not enough information to execute script.' + - 'This usually happens when creating a transaction from a serialized transaction' - ); - } - return this.inputs[signature.inputIndex].isValidSignature(self, signature); -}; -/** - * @returns {bool} whether the signature is valid for this transaction input - */ -Transaction.prototype.verifySignature = function(sig, pubkey, nin, subscript, sigversion, satoshis) { + /** + * Creates a base function for methods like `_.forIn` and `_.forOwn`. + * + * @private + * @param {boolean} [fromRight] Specify iterating from right to left. + * @returns {Function} Returns the new base function. + */ + function createBaseFor(fromRight) { + return function(object, iteratee, keysFunc) { + var index = -1, + iterable = Object(object), + props = keysFunc(object), + length = props.length; - if (_.isUndefined(sigversion)) { - sigversion = 0; - } + while (length--) { + var key = props[fromRight ? length : ++index]; + if (iteratee(iterable[key], key, iterable) === false) { + break; + } + } + return object; + }; + } - if (sigversion === 1) { - var subscriptBuffer = subscript.toBuffer(); - var scriptCodeWriter = new BufferWriter(); - scriptCodeWriter.writeVarintNum(subscriptBuffer.length); - scriptCodeWriter.write(subscriptBuffer); + /** + * Creates a function that wraps `func` to invoke it with the optional `this` + * binding of `thisArg`. + * + * @private + * @param {Function} func The function to wrap. + * @param {number} bitmask The bitmask flags. See `createWrap` for more details. + * @param {*} [thisArg] The `this` binding of `func`. + * @returns {Function} Returns the new wrapped function. + */ + function createBind(func, bitmask, thisArg) { + var isBind = bitmask & WRAP_BIND_FLAG, + Ctor = createCtor(func); - var satoshisBuffer; - if (satoshis) { - $.checkState(JSUtil.isNaturalNumber(satoshis)); - satoshisBuffer = new BufferWriter().writeUInt64LEBN(new BN(satoshis)).toBuffer(); - } else { - satoshisBuffer = this.inputs[nin].getSatoshisBuffer(); + function wrapper() { + var fn = (this && this !== root && this instanceof wrapper) ? Ctor : func; + return fn.apply(isBind ? thisArg : this, arguments); + } + return wrapper; } - var verified = SighashWitness.verify( - this, - sig, - pubkey, - nin, - scriptCodeWriter.toBuffer(), - satoshisBuffer - ); - return verified; - } - return Sighash.verify(this, sig, pubkey, nin, subscript); -}; + /** + * Creates a function like `_.lowerFirst`. + * + * @private + * @param {string} methodName The name of the `String` case method to use. + * @returns {Function} Returns the new case function. + */ + function createCaseFirst(methodName) { + return function(string) { + string = toString(string); -/** - * Check that a transaction passes basic sanity tests. If not, return a string - * describing the error. This function contains the same logic as - * CheckTransaction in bitcoin core. - */ -Transaction.prototype.verify = function() { - // Basic checks that don't depend on any context - if (this.inputs.length === 0) { - return 'transaction txins empty'; - } + var strSymbols = hasUnicode(string) + ? stringToArray(string) + : undefined; - if (this.outputs.length === 0) { - return 'transaction txouts empty'; - } + var chr = strSymbols + ? strSymbols[0] + : string.charAt(0); - // Check for negative or overflow output values - var valueoutbn = new BN(0); - for (var i = 0; i < this.outputs.length; i++) { - var txout = this.outputs[i]; + var trailing = strSymbols + ? castSlice(strSymbols, 1).join('') + : string.slice(1); - if (txout.invalidSatoshis()) { - return 'transaction txout ' + i + ' satoshis is invalid'; - } - if (txout._satoshisBN.gt(new BN(Transaction.MAX_MONEY, 10))) { - return 'transaction txout ' + i + ' greater than MAX_MONEY'; - } - valueoutbn = valueoutbn.add(txout._satoshisBN); - if (valueoutbn.gt(new BN(Transaction.MAX_MONEY))) { - return 'transaction txout ' + i + ' total output greater than MAX_MONEY'; + return chr[methodName]() + trailing; + }; } - } - // Size limits - if (this.toBuffer().length > MAX_BLOCK_SIZE) { - return 'transaction over the maximum block size'; - } + /** + * Creates a function like `_.camelCase`. + * + * @private + * @param {Function} callback The function to combine each word. + * @returns {Function} Returns the new compounder function. + */ + function createCompounder(callback) { + return function(string) { + return arrayReduce(words(deburr(string).replace(reApos, '')), callback, ''); + }; + } - // Check for duplicate inputs - var txinmap = {}; - for (i = 0; i < this.inputs.length; i++) { - var txin = this.inputs[i]; + /** + * Creates a function that produces an instance of `Ctor` regardless of + * whether it was invoked as part of a `new` expression or by `call` or `apply`. + * + * @private + * @param {Function} Ctor The constructor to wrap. + * @returns {Function} Returns the new wrapped function. + */ + function createCtor(Ctor) { + return function() { + // Use a `switch` statement to work with class constructors. See + // http://ecma-international.org/ecma-262/7.0/#sec-ecmascript-function-objects-call-thisargument-argumentslist + // for more details. + var args = arguments; + switch (args.length) { + case 0: return new Ctor; + case 1: return new Ctor(args[0]); + case 2: return new Ctor(args[0], args[1]); + case 3: return new Ctor(args[0], args[1], args[2]); + case 4: return new Ctor(args[0], args[1], args[2], args[3]); + case 5: return new Ctor(args[0], args[1], args[2], args[3], args[4]); + case 6: return new Ctor(args[0], args[1], args[2], args[3], args[4], args[5]); + case 7: return new Ctor(args[0], args[1], args[2], args[3], args[4], args[5], args[6]); + } + var thisBinding = baseCreate(Ctor.prototype), + result = Ctor.apply(thisBinding, args); - var inputid = txin.prevTxId + ':' + txin.outputIndex; - if (!_.isUndefined(txinmap[inputid])) { - return 'transaction input ' + i + ' duplicate input'; + // Mimic the constructor's `return` behavior. + // See https://es5.github.io/#x13.2.2 for more details. + return isObject(result) ? result : thisBinding; + }; } - txinmap[inputid] = true; - } - var isCoinbase = this.isCoinbase(); - if (isCoinbase) { - var buf = this.inputs[0]._scriptBuffer; - if (buf.length < 2 || buf.length > 100) { - return 'coinbase transaction script size invalid'; - } - } else { - for (i = 0; i < this.inputs.length; i++) { - if (this.inputs[i].isNull()) { - return 'transaction input ' + i + ' has null input'; - } - } - } - return true; -}; + /** + * Creates a function that wraps `func` to enable currying. + * + * @private + * @param {Function} func The function to wrap. + * @param {number} bitmask The bitmask flags. See `createWrap` for more details. + * @param {number} arity The arity of `func`. + * @returns {Function} Returns the new wrapped function. + */ + function createCurry(func, bitmask, arity) { + var Ctor = createCtor(func); + + function wrapper() { + var length = arguments.length, + args = Array(length), + index = length, + placeholder = getHolder(wrapper); -/** - * Analogous to bitcoind's IsCoinBase function in transaction.h - */ -Transaction.prototype.isCoinbase = function() { - return (this.inputs.length === 1 && this.inputs[0].isNull()); -}; + while (index--) { + args[index] = arguments[index]; + } + var holders = (length < 3 && args[0] !== placeholder && args[length - 1] !== placeholder) + ? [] + : replaceHolders(args, placeholder); -/** - * Determines if this transaction can be replaced in the mempool with another - * transaction that provides a sufficiently higher fee (RBF). - */ -Transaction.prototype.isRBF = function() { - for (var i = 0; i < this.inputs.length; i++) { - var input = this.inputs[i]; - if (input.sequenceNumber < Input.MAXINT - 1) { - return true; + length -= holders.length; + if (length < arity) { + return createRecurry( + func, bitmask, createHybrid, wrapper.placeholder, undefined, + args, holders, undefined, undefined, arity - length); + } + var fn = (this && this !== root && this instanceof wrapper) ? Ctor : func; + return apply(fn, this, args); + } + return wrapper; } - } - return false; -}; -/** - * Enable this transaction to be replaced in the mempool (RBF) if a transaction - * includes a sufficiently higher fee. It will set the sequenceNumber to - * DEFAULT_RBF_SEQNUMBER for all inputs if the sequence number does not - * already enable RBF. - */ -Transaction.prototype.enableRBF = function() { - for (var i = 0; i < this.inputs.length; i++) { - var input = this.inputs[i]; - if (input.sequenceNumber >= Input.MAXINT - 1) { - input.sequenceNumber = Input.DEFAULT_RBF_SEQNUMBER; + /** + * Creates a `_.find` or `_.findLast` function. + * + * @private + * @param {Function} findIndexFunc The function to find the collection index. + * @returns {Function} Returns the new find function. + */ + function createFind(findIndexFunc) { + return function(collection, predicate, fromIndex) { + var iterable = Object(collection); + if (!isArrayLike(collection)) { + var iteratee = getIteratee(predicate, 3); + collection = keys(collection); + predicate = function(key) { return iteratee(iterable[key], key, iterable); }; + } + var index = findIndexFunc(collection, predicate, fromIndex); + return index > -1 ? iterable[iteratee ? collection[index] : index] : undefined; + }; } - } - return this; -}; - -module.exports = Transaction; -}).call(this,require("buffer").Buffer) -},{"../address":164,"../crypto/bn":169,"../crypto/hash":171,"../crypto/signature":174,"../encoding/bufferreader":177,"../encoding/bufferwriter":178,"../errors":180,"../privatekey":186,"../script":188,"../util/buffer":206,"../util/js":207,"../util/preconditions":208,"./input":192,"./output":198,"./sighash":199,"./sighashwitness":200,"./unspentoutput":203,"buffer":52,"buffer-compare":213,"lodash":245}],203:[function(require,module,exports){ -'use strict'; + /** + * Creates a `_.flow` or `_.flowRight` function. + * + * @private + * @param {boolean} [fromRight] Specify iterating from right to left. + * @returns {Function} Returns the new flow function. + */ + function createFlow(fromRight) { + return flatRest(function(funcs) { + var length = funcs.length, + index = length, + prereq = LodashWrapper.prototype.thru; -var _ = require('lodash'); -var $ = require('../util/preconditions'); -var JSUtil = require('../util/js'); + if (fromRight) { + funcs.reverse(); + } + while (index--) { + var func = funcs[index]; + if (typeof func != 'function') { + throw new TypeError(FUNC_ERROR_TEXT); + } + if (prereq && !wrapper && getFuncName(func) == 'wrapper') { + var wrapper = new LodashWrapper([], true); + } + } + index = wrapper ? index : length; + while (++index < length) { + func = funcs[index]; -var Script = require('../script'); -var Address = require('../address'); -var Unit = require('../unit'); + var funcName = getFuncName(func), + data = funcName == 'wrapper' ? getData(func) : undefined; -/** - * Represents an unspent output information: its script, associated amount and address, - * transaction id and output index. - * - * @constructor - * @param {object} data - * @param {string} data.txid the previous transaction id - * @param {string=} data.txId alias for `txid` - * @param {number} data.vout the index in the transaction - * @param {number=} data.outputIndex alias for `vout` - * @param {string|Script} data.scriptPubKey the script that must be resolved to release the funds - * @param {string|Script=} data.script alias for `scriptPubKey` - * @param {number} data.amount amount of bitcoins associated - * @param {number=} data.satoshis alias for `amount`, but expressed in satoshis (1 BTC = 1e8 satoshis) - * @param {string|Address=} data.address the associated address to the script, if provided - */ -function UnspentOutput(data) { - /* jshint maxcomplexity: 20 */ - /* jshint maxstatements: 20 */ - if (!(this instanceof UnspentOutput)) { - return new UnspentOutput(data); - } - $.checkArgument(_.isObject(data), 'Must provide an object from where to extract data'); - var address = data.address ? new Address(data.address) : undefined; - var txId = data.txid ? data.txid : data.txId; - if (!txId || !JSUtil.isHexaString(txId) || txId.length > 64) { - // TODO: Use the errors library - throw new Error('Invalid TXID in object', data); - } - var outputIndex = _.isUndefined(data.vout) ? data.outputIndex : data.vout; - if (!_.isNumber(outputIndex)) { - throw new Error('Invalid outputIndex, received ' + outputIndex); - } - $.checkArgument(!_.isUndefined(data.scriptPubKey) || !_.isUndefined(data.script), - 'Must provide the scriptPubKey for that output!'); - var script = new Script(data.scriptPubKey || data.script); - $.checkArgument(!_.isUndefined(data.amount) || !_.isUndefined(data.satoshis), - 'Must provide an amount for the output'); - var amount = !_.isUndefined(data.amount) ? new Unit.fromBTC(data.amount).toSatoshis() : data.satoshis; - $.checkArgument(_.isNumber(amount), 'Amount must be a number'); - JSUtil.defineImmutable(this, { - address: address, - txId: txId, - outputIndex: outputIndex, - script: script, - satoshis: amount - }); -} + if (data && isLaziable(data[0]) && + data[1] == (WRAP_ARY_FLAG | WRAP_CURRY_FLAG | WRAP_PARTIAL_FLAG | WRAP_REARG_FLAG) && + !data[4].length && data[9] == 1 + ) { + wrapper = wrapper[getFuncName(data[0])].apply(wrapper, data[3]); + } else { + wrapper = (func.length == 1 && isLaziable(func)) + ? wrapper[funcName]() + : wrapper.thru(func); + } + } + return function() { + var args = arguments, + value = args[0]; -/** - * Provide an informative output when displaying this object in the console - * @returns string - */ -UnspentOutput.prototype.inspect = function() { - return ''; -}; + if (wrapper && args.length == 1 && isArray(value)) { + return wrapper.plant(value).value(); + } + var index = 0, + result = length ? funcs[index].apply(this, args) : value; -/** - * String representation: just "txid:index" - * @returns string - */ -UnspentOutput.prototype.toString = function() { - return this.txId + ':' + this.outputIndex; -}; + while (++index < length) { + result = funcs[index].call(this, result); + } + return result; + }; + }); + } -/** - * Deserialize an UnspentOutput from an object - * @param {object|string} data - * @return UnspentOutput - */ -UnspentOutput.fromObject = function(data) { - return new UnspentOutput(data); -}; + /** + * Creates a function that wraps `func` to invoke it with optional `this` + * binding of `thisArg`, partial application, and currying. + * + * @private + * @param {Function|string} func The function or method name to wrap. + * @param {number} bitmask The bitmask flags. See `createWrap` for more details. + * @param {*} [thisArg] The `this` binding of `func`. + * @param {Array} [partials] The arguments to prepend to those provided to + * the new function. + * @param {Array} [holders] The `partials` placeholder indexes. + * @param {Array} [partialsRight] The arguments to append to those provided + * to the new function. + * @param {Array} [holdersRight] The `partialsRight` placeholder indexes. + * @param {Array} [argPos] The argument positions of the new function. + * @param {number} [ary] The arity cap of `func`. + * @param {number} [arity] The arity of `func`. + * @returns {Function} Returns the new wrapped function. + */ + function createHybrid(func, bitmask, thisArg, partials, holders, partialsRight, holdersRight, argPos, ary, arity) { + var isAry = bitmask & WRAP_ARY_FLAG, + isBind = bitmask & WRAP_BIND_FLAG, + isBindKey = bitmask & WRAP_BIND_KEY_FLAG, + isCurried = bitmask & (WRAP_CURRY_FLAG | WRAP_CURRY_RIGHT_FLAG), + isFlip = bitmask & WRAP_FLIP_FLAG, + Ctor = isBindKey ? undefined : createCtor(func); -/** - * Returns a plain object (no prototype or methods) with the associated info for this output - * @return {object} - */ -UnspentOutput.prototype.toObject = UnspentOutput.prototype.toJSON = function toObject() { - return { - address: this.address ? this.address.toString() : undefined, - txid: this.txId, - vout: this.outputIndex, - scriptPubKey: this.script.toBuffer().toString('hex'), - amount: Unit.fromSatoshis(this.satoshis).toBTC() - }; -}; + function wrapper() { + var length = arguments.length, + args = Array(length), + index = length; -module.exports = UnspentOutput; + while (index--) { + args[index] = arguments[index]; + } + if (isCurried) { + var placeholder = getHolder(wrapper), + holdersCount = countHolders(args, placeholder); + } + if (partials) { + args = composeArgs(args, partials, holders, isCurried); + } + if (partialsRight) { + args = composeArgsRight(args, partialsRight, holdersRight, isCurried); + } + length -= holdersCount; + if (isCurried && length < arity) { + var newHolders = replaceHolders(args, placeholder); + return createRecurry( + func, bitmask, createHybrid, wrapper.placeholder, thisArg, + args, newHolders, argPos, ary, arity - length + ); + } + var thisBinding = isBind ? thisArg : this, + fn = isBindKey ? thisBinding[func] : func; -},{"../address":164,"../script":188,"../unit":204,"../util/js":207,"../util/preconditions":208,"lodash":245}],204:[function(require,module,exports){ -'use strict'; + length = args.length; + if (argPos) { + args = reorder(args, argPos); + } else if (isFlip && length > 1) { + args.reverse(); + } + if (isAry && ary < length) { + args.length = ary; + } + if (this && this !== root && this instanceof wrapper) { + fn = Ctor || createCtor(fn); + } + return fn.apply(thisBinding, args); + } + return wrapper; + } -var _ = require('lodash'); + /** + * Creates a function like `_.invertBy`. + * + * @private + * @param {Function} setter The function to set accumulator values. + * @param {Function} toIteratee The function to resolve iteratees. + * @returns {Function} Returns the new inverter function. + */ + function createInverter(setter, toIteratee) { + return function(object, iteratee) { + return baseInverter(object, setter, toIteratee(iteratee), {}); + }; + } -var errors = require('./errors'); -var $ = require('./util/preconditions'); + /** + * Creates a function that performs a mathematical operation on two values. + * + * @private + * @param {Function} operator The function to perform the operation. + * @param {number} [defaultValue] The value used for `undefined` arguments. + * @returns {Function} Returns the new mathematical operation function. + */ + function createMathOperation(operator, defaultValue) { + return function(value, other) { + var result; + if (value === undefined && other === undefined) { + return defaultValue; + } + if (value !== undefined) { + result = value; + } + if (other !== undefined) { + if (result === undefined) { + return other; + } + if (typeof value == 'string' || typeof other == 'string') { + value = baseToString(value); + other = baseToString(other); + } else { + value = baseToNumber(value); + other = baseToNumber(other); + } + result = operator(value, other); + } + return result; + }; + } -var UNITS = { - 'BTC' : [1e8, 8], - 'mBTC' : [1e5, 5], - 'uBTC' : [1e2, 2], - 'bits' : [1e2, 2], - 'satoshis' : [1, 0] -}; + /** + * Creates a function like `_.over`. + * + * @private + * @param {Function} arrayFunc The function to iterate over iteratees. + * @returns {Function} Returns the new over function. + */ + function createOver(arrayFunc) { + return flatRest(function(iteratees) { + iteratees = arrayMap(iteratees, baseUnary(getIteratee())); + return baseRest(function(args) { + var thisArg = this; + return arrayFunc(iteratees, function(iteratee) { + return apply(iteratee, thisArg, args); + }); + }); + }); + } -/** - * Utility for handling and converting bitcoins units. The supported units are - * BTC, mBTC, bits (also named uBTC) and satoshis. A unit instance can be created with an - * amount and a unit code, or alternatively using static methods like {fromBTC}. - * It also allows to be created from a fiat amount and the exchange rate, or - * alternatively using the {fromFiat} static method. - * You can consult for different representation of a unit instance using it's - * {to} method, the fixed unit methods like {toSatoshis} or alternatively using - * the unit accessors. It also can be converted to a fiat amount by providing the - * corresponding BTC/fiat exchange rate. - * - * @example - * ```javascript - * var sats = Unit.fromBTC(1.3).toSatoshis(); - * var mili = Unit.fromBits(1.3).to(Unit.mBTC); - * var bits = Unit.fromFiat(1.3, 350).bits; - * var btc = new Unit(1.3, Unit.bits).BTC; - * ``` - * - * @param {Number} amount - The amount to be represented - * @param {String|Number} code - The unit of the amount or the exchange rate - * @returns {Unit} A new instance of an Unit - * @constructor - */ -function Unit(amount, code) { - if (!(this instanceof Unit)) { - return new Unit(amount, code); - } + /** + * Creates the padding for `string` based on `length`. The `chars` string + * is truncated if the number of characters exceeds `length`. + * + * @private + * @param {number} length The padding length. + * @param {string} [chars=' '] The string used as padding. + * @returns {string} Returns the padding for `string`. + */ + function createPadding(length, chars) { + chars = chars === undefined ? ' ' : baseToString(chars); - // convert fiat to BTC - if (_.isNumber(code)) { - if (code <= 0) { - throw new errors.Unit.InvalidRate(code); + var charsLength = chars.length; + if (charsLength < 2) { + return charsLength ? baseRepeat(chars, length) : chars; + } + var result = baseRepeat(chars, nativeCeil(length / stringSize(chars))); + return hasUnicode(chars) + ? castSlice(stringToArray(result), 0, length).join('') + : result.slice(0, length); } - amount = amount / code; - code = Unit.BTC; - } - this._value = this._from(amount, code); + /** + * Creates a function that wraps `func` to invoke it with the `this` binding + * of `thisArg` and `partials` prepended to the arguments it receives. + * + * @private + * @param {Function} func The function to wrap. + * @param {number} bitmask The bitmask flags. See `createWrap` for more details. + * @param {*} thisArg The `this` binding of `func`. + * @param {Array} partials The arguments to prepend to those provided to + * the new function. + * @returns {Function} Returns the new wrapped function. + */ + function createPartial(func, bitmask, thisArg, partials) { + var isBind = bitmask & WRAP_BIND_FLAG, + Ctor = createCtor(func); - var self = this; - var defineAccesor = function(key) { - Object.defineProperty(self, key, { - get: function() { return self.to(key); }, - enumerable: true, - }); - }; + function wrapper() { + var argsIndex = -1, + argsLength = arguments.length, + leftIndex = -1, + leftLength = partials.length, + args = Array(leftLength + argsLength), + fn = (this && this !== root && this instanceof wrapper) ? Ctor : func; - Object.keys(UNITS).forEach(defineAccesor); -} + while (++leftIndex < leftLength) { + args[leftIndex] = partials[leftIndex]; + } + while (argsLength--) { + args[leftIndex++] = arguments[++argsIndex]; + } + return apply(fn, isBind ? thisArg : this, args); + } + return wrapper; + } -Object.keys(UNITS).forEach(function(key) { - Unit[key] = key; -}); + /** + * Creates a `_.range` or `_.rangeRight` function. + * + * @private + * @param {boolean} [fromRight] Specify iterating from right to left. + * @returns {Function} Returns the new range function. + */ + function createRange(fromRight) { + return function(start, end, step) { + if (step && typeof step != 'number' && isIterateeCall(start, end, step)) { + end = step = undefined; + } + // Ensure the sign of `-0` is preserved. + start = toFinite(start); + if (end === undefined) { + end = start; + start = 0; + } else { + end = toFinite(end); + } + step = step === undefined ? (start < end ? 1 : -1) : toFinite(step); + return baseRange(start, end, step, fromRight); + }; + } -/** - * Returns a Unit instance created from JSON string or object - * - * @param {String|Object} json - JSON with keys: amount and code - * @returns {Unit} A Unit instance - */ -Unit.fromObject = function fromObject(data){ - $.checkArgument(_.isObject(data), 'Argument is expected to be an object'); - return new Unit(data.amount, data.code); -}; + /** + * Creates a function that performs a relational operation on two values. + * + * @private + * @param {Function} operator The function to perform the operation. + * @returns {Function} Returns the new relational operation function. + */ + function createRelationalOperation(operator) { + return function(value, other) { + if (!(typeof value == 'string' && typeof other == 'string')) { + value = toNumber(value); + other = toNumber(other); + } + return operator(value, other); + }; + } + + /** + * Creates a function that wraps `func` to continue currying. + * + * @private + * @param {Function} func The function to wrap. + * @param {number} bitmask The bitmask flags. See `createWrap` for more details. + * @param {Function} wrapFunc The function to create the `func` wrapper. + * @param {*} placeholder The placeholder value. + * @param {*} [thisArg] The `this` binding of `func`. + * @param {Array} [partials] The arguments to prepend to those provided to + * the new function. + * @param {Array} [holders] The `partials` placeholder indexes. + * @param {Array} [argPos] The argument positions of the new function. + * @param {number} [ary] The arity cap of `func`. + * @param {number} [arity] The arity of `func`. + * @returns {Function} Returns the new wrapped function. + */ + function createRecurry(func, bitmask, wrapFunc, placeholder, thisArg, partials, holders, argPos, ary, arity) { + var isCurry = bitmask & WRAP_CURRY_FLAG, + newHolders = isCurry ? holders : undefined, + newHoldersRight = isCurry ? undefined : holders, + newPartials = isCurry ? partials : undefined, + newPartialsRight = isCurry ? undefined : partials; -/** - * Returns a Unit instance created from an amount in BTC - * - * @param {Number} amount - The amount in BTC - * @returns {Unit} A Unit instance - */ -Unit.fromBTC = function(amount) { - return new Unit(amount, Unit.BTC); -}; + bitmask |= (isCurry ? WRAP_PARTIAL_FLAG : WRAP_PARTIAL_RIGHT_FLAG); + bitmask &= ~(isCurry ? WRAP_PARTIAL_RIGHT_FLAG : WRAP_PARTIAL_FLAG); -/** - * Returns a Unit instance created from an amount in mBTC - * - * @param {Number} amount - The amount in mBTC - * @returns {Unit} A Unit instance - */ -Unit.fromMillis = Unit.fromMilis = function(amount) { - return new Unit(amount, Unit.mBTC); -}; + if (!(bitmask & WRAP_CURRY_BOUND_FLAG)) { + bitmask &= ~(WRAP_BIND_FLAG | WRAP_BIND_KEY_FLAG); + } + var newData = [ + func, bitmask, thisArg, newPartials, newHolders, newPartialsRight, + newHoldersRight, argPos, ary, arity + ]; -/** - * Returns a Unit instance created from an amount in bits - * - * @param {Number} amount - The amount in bits - * @returns {Unit} A Unit instance - */ -Unit.fromMicros = Unit.fromBits = function(amount) { - return new Unit(amount, Unit.bits); -}; + var result = wrapFunc.apply(undefined, newData); + if (isLaziable(func)) { + setData(result, newData); + } + result.placeholder = placeholder; + return setWrapToString(result, func, bitmask); + } -/** - * Returns a Unit instance created from an amount in satoshis - * - * @param {Number} amount - The amount in satoshis - * @returns {Unit} A Unit instance - */ -Unit.fromSatoshis = function(amount) { - return new Unit(amount, Unit.satoshis); -}; + /** + * Creates a function like `_.round`. + * + * @private + * @param {string} methodName The name of the `Math` method to use when rounding. + * @returns {Function} Returns the new round function. + */ + function createRound(methodName) { + var func = Math[methodName]; + return function(number, precision) { + number = toNumber(number); + precision = precision == null ? 0 : nativeMin(toInteger(precision), 292); + if (precision) { + // Shift with exponential notation to avoid floating-point issues. + // See [MDN](https://mdn.io/round#Examples) for more details. + var pair = (toString(number) + 'e').split('e'), + value = func(pair[0] + 'e' + (+pair[1] + precision)); -/** - * Returns a Unit instance created from a fiat amount and exchange rate. - * - * @param {Number} amount - The amount in fiat - * @param {Number} rate - The exchange rate BTC/fiat - * @returns {Unit} A Unit instance - */ -Unit.fromFiat = function(amount, rate) { - return new Unit(amount, rate); -}; + pair = (toString(value) + 'e').split('e'); + return +(pair[0] + 'e' + (+pair[1] - precision)); + } + return func(number); + }; + } -Unit.prototype._from = function(amount, code) { - if (!UNITS[code]) { - throw new errors.Unit.UnknownCode(code); - } - return parseInt((amount * UNITS[code][0]).toFixed()); -}; + /** + * Creates a set object of `values`. + * + * @private + * @param {Array} values The values to add to the set. + * @returns {Object} Returns the new set. + */ + var createSet = !(Set && (1 / setToArray(new Set([,-0]))[1]) == INFINITY) ? noop : function(values) { + return new Set(values); + }; -/** - * Returns the value represented in the specified unit - * - * @param {String|Number} code - The unit code or exchange rate - * @returns {Number} The converted value - */ -Unit.prototype.to = function(code) { - if (_.isNumber(code)) { - if (code <= 0) { - throw new errors.Unit.InvalidRate(code); + /** + * Creates a `_.toPairs` or `_.toPairsIn` function. + * + * @private + * @param {Function} keysFunc The function to get the keys of a given object. + * @returns {Function} Returns the new pairs function. + */ + function createToPairs(keysFunc) { + return function(object) { + var tag = getTag(object); + if (tag == mapTag) { + return mapToArray(object); + } + if (tag == setTag) { + return setToPairs(object); + } + return baseToPairs(object, keysFunc(object)); + }; } - return parseFloat((this.BTC * code).toFixed(2)); - } - if (!UNITS[code]) { - throw new errors.Unit.UnknownCode(code); - } + /** + * Creates a function that either curries or invokes `func` with optional + * `this` binding and partially applied arguments. + * + * @private + * @param {Function|string} func The function or method name to wrap. + * @param {number} bitmask The bitmask flags. + * 1 - `_.bind` + * 2 - `_.bindKey` + * 4 - `_.curry` or `_.curryRight` of a bound function + * 8 - `_.curry` + * 16 - `_.curryRight` + * 32 - `_.partial` + * 64 - `_.partialRight` + * 128 - `_.rearg` + * 256 - `_.ary` + * 512 - `_.flip` + * @param {*} [thisArg] The `this` binding of `func`. + * @param {Array} [partials] The arguments to be partially applied. + * @param {Array} [holders] The `partials` placeholder indexes. + * @param {Array} [argPos] The argument positions of the new function. + * @param {number} [ary] The arity cap of `func`. + * @param {number} [arity] The arity of `func`. + * @returns {Function} Returns the new wrapped function. + */ + function createWrap(func, bitmask, thisArg, partials, holders, argPos, ary, arity) { + var isBindKey = bitmask & WRAP_BIND_KEY_FLAG; + if (!isBindKey && typeof func != 'function') { + throw new TypeError(FUNC_ERROR_TEXT); + } + var length = partials ? partials.length : 0; + if (!length) { + bitmask &= ~(WRAP_PARTIAL_FLAG | WRAP_PARTIAL_RIGHT_FLAG); + partials = holders = undefined; + } + ary = ary === undefined ? ary : nativeMax(toInteger(ary), 0); + arity = arity === undefined ? arity : toInteger(arity); + length -= holders ? holders.length : 0; - var value = this._value / UNITS[code][0]; - return parseFloat(value.toFixed(UNITS[code][1])); -}; + if (bitmask & WRAP_PARTIAL_RIGHT_FLAG) { + var partialsRight = partials, + holdersRight = holders; -/** - * Returns the value represented in BTC - * - * @returns {Number} The value converted to BTC - */ -Unit.prototype.toBTC = function() { - return this.to(Unit.BTC); -}; + partials = holders = undefined; + } + var data = isBindKey ? undefined : getData(func); -/** - * Returns the value represented in mBTC - * - * @returns {Number} The value converted to mBTC - */ -Unit.prototype.toMillis = Unit.prototype.toMilis = function() { - return this.to(Unit.mBTC); -}; + var newData = [ + func, bitmask, thisArg, partials, holders, partialsRight, holdersRight, + argPos, ary, arity + ]; -/** - * Returns the value represented in bits - * - * @returns {Number} The value converted to bits - */ -Unit.prototype.toMicros = Unit.prototype.toBits = function() { - return this.to(Unit.bits); -}; + if (data) { + mergeData(newData, data); + } + func = newData[0]; + bitmask = newData[1]; + thisArg = newData[2]; + partials = newData[3]; + holders = newData[4]; + arity = newData[9] = newData[9] === undefined + ? (isBindKey ? 0 : func.length) + : nativeMax(newData[9] - length, 0); -/** - * Returns the value represented in satoshis - * - * @returns {Number} The value converted to satoshis - */ -Unit.prototype.toSatoshis = function() { - return this.to(Unit.satoshis); -}; + if (!arity && bitmask & (WRAP_CURRY_FLAG | WRAP_CURRY_RIGHT_FLAG)) { + bitmask &= ~(WRAP_CURRY_FLAG | WRAP_CURRY_RIGHT_FLAG); + } + if (!bitmask || bitmask == WRAP_BIND_FLAG) { + var result = createBind(func, bitmask, thisArg); + } else if (bitmask == WRAP_CURRY_FLAG || bitmask == WRAP_CURRY_RIGHT_FLAG) { + result = createCurry(func, bitmask, arity); + } else if ((bitmask == WRAP_PARTIAL_FLAG || bitmask == (WRAP_BIND_FLAG | WRAP_PARTIAL_FLAG)) && !holders.length) { + result = createPartial(func, bitmask, thisArg, partials); + } else { + result = createHybrid.apply(undefined, newData); + } + var setter = data ? baseSetData : setData; + return setWrapToString(setter(result, newData), func, bitmask); + } -/** - * Returns the value represented in fiat - * - * @param {string} rate - The exchange rate between BTC/currency - * @returns {Number} The value converted to satoshis - */ -Unit.prototype.atRate = function(rate) { - return this.to(rate); -}; + /** + * Used by `_.defaults` to customize its `_.assignIn` use to assign properties + * of source objects to the destination object for all destination properties + * that resolve to `undefined`. + * + * @private + * @param {*} objValue The destination value. + * @param {*} srcValue The source value. + * @param {string} key The key of the property to assign. + * @param {Object} object The parent object of `objValue`. + * @returns {*} Returns the value to assign. + */ + function customDefaultsAssignIn(objValue, srcValue, key, object) { + if (objValue === undefined || + (eq(objValue, objectProto[key]) && !hasOwnProperty.call(object, key))) { + return srcValue; + } + return objValue; + } -/** - * Returns a the string representation of the value in satoshis - * - * @returns {string} the value in satoshis - */ -Unit.prototype.toString = function() { - return this.satoshis + ' satoshis'; -}; + /** + * Used by `_.defaultsDeep` to customize its `_.merge` use to merge source + * objects into destination objects that are passed thru. + * + * @private + * @param {*} objValue The destination value. + * @param {*} srcValue The source value. + * @param {string} key The key of the property to merge. + * @param {Object} object The parent object of `objValue`. + * @param {Object} source The parent object of `srcValue`. + * @param {Object} [stack] Tracks traversed source values and their merged + * counterparts. + * @returns {*} Returns the value to assign. + */ + function customDefaultsMerge(objValue, srcValue, key, object, source, stack) { + if (isObject(objValue) && isObject(srcValue)) { + // Recursively merge objects and arrays (susceptible to call stack limits). + stack.set(srcValue, objValue); + baseMerge(objValue, srcValue, undefined, customDefaultsMerge, stack); + stack['delete'](srcValue); + } + return objValue; + } -/** - * Returns a plain object representation of the Unit - * - * @returns {Object} An object with the keys: amount and code - */ -Unit.prototype.toObject = Unit.prototype.toJSON = function toObject() { - return { - amount: this.BTC, - code: Unit.BTC - }; -}; + /** + * Used by `_.omit` to customize its `_.cloneDeep` use to only clone plain + * objects. + * + * @private + * @param {*} value The value to inspect. + * @param {string} key The key of the property to inspect. + * @returns {*} Returns the uncloned value or `undefined` to defer cloning to `_.cloneDeep`. + */ + function customOmitClone(value) { + return isPlainObject(value) ? undefined : value; + } -/** - * Returns a string formatted for the console - * - * @returns {string} the value in satoshis - */ -Unit.prototype.inspect = function() { - return ''; -}; + /** + * A specialized version of `baseIsEqualDeep` for arrays with support for + * partial deep comparisons. + * + * @private + * @param {Array} array The array to compare. + * @param {Array} other The other array to compare. + * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details. + * @param {Function} customizer The function to customize comparisons. + * @param {Function} equalFunc The function to determine equivalents of values. + * @param {Object} stack Tracks traversed `array` and `other` objects. + * @returns {boolean} Returns `true` if the arrays are equivalent, else `false`. + */ + function equalArrays(array, other, bitmask, customizer, equalFunc, stack) { + var isPartial = bitmask & COMPARE_PARTIAL_FLAG, + arrLength = array.length, + othLength = other.length; -module.exports = Unit; + if (arrLength != othLength && !(isPartial && othLength > arrLength)) { + return false; + } + // Assume cyclic values are equal. + var stacked = stack.get(array); + if (stacked && stack.get(other)) { + return stacked == other; + } + var index = -1, + result = true, + seen = (bitmask & COMPARE_UNORDERED_FLAG) ? new SetCache : undefined; -},{"./errors":180,"./util/preconditions":208,"lodash":245}],205:[function(require,module,exports){ -'use strict'; + stack.set(array, other); + stack.set(other, array); -var _ = require('lodash'); -var URL = require('url'); + // Ignore non-index properties. + while (++index < arrLength) { + var arrValue = array[index], + othValue = other[index]; -var Address = require('./address'); -var Unit = require('./unit'); + if (customizer) { + var compared = isPartial + ? customizer(othValue, arrValue, index, other, array, stack) + : customizer(arrValue, othValue, index, array, other, stack); + } + if (compared !== undefined) { + if (compared) { + continue; + } + result = false; + break; + } + // Recursively compare arrays (susceptible to call stack limits). + if (seen) { + if (!arraySome(other, function(othValue, othIndex) { + if (!cacheHas(seen, othIndex) && + (arrValue === othValue || equalFunc(arrValue, othValue, bitmask, customizer, stack))) { + return seen.push(othIndex); + } + })) { + result = false; + break; + } + } else if (!( + arrValue === othValue || + equalFunc(arrValue, othValue, bitmask, customizer, stack) + )) { + result = false; + break; + } + } + stack['delete'](array); + stack['delete'](other); + return result; + } -/** - * Bitcore URI - * - * Instantiate an URI from a bitcoin URI String or an Object. An URI instance - * can be created with a bitcoin uri string or an object. All instances of - * URI are valid, the static method isValid allows checking before instantiation. - * - * All standard parameters can be found as members of the class, the address - * is represented using an {Address} instance and the amount is represented in - * satoshis. Any other non-standard parameters can be found under the extra member. - * - * @example - * ```javascript - * - * var uri = new URI('bitcoin:12A1MyfXbW6RhdRAZEqofac5jCQQjwEPBu?amount=1.2'); - * console.log(uri.address, uri.amount); - * ``` - * - * @param {string|Object} data - A bitcoin URI string or an Object - * @param {Array.=} knownParams - Required non-standard params - * @throws {TypeError} Invalid bitcoin address - * @throws {TypeError} Invalid amount - * @throws {Error} Unknown required argument - * @returns {URI} A new valid and frozen instance of URI - * @constructor - */ -var URI = function(data, knownParams) { - if (!(this instanceof URI)) { - return new URI(data, knownParams); - } + /** + * A specialized version of `baseIsEqualDeep` for comparing objects of + * the same `toStringTag`. + * + * **Note:** This function only supports comparing values with tags of + * `Boolean`, `Date`, `Error`, `Number`, `RegExp`, or `String`. + * + * @private + * @param {Object} object The object to compare. + * @param {Object} other The other object to compare. + * @param {string} tag The `toStringTag` of the objects to compare. + * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details. + * @param {Function} customizer The function to customize comparisons. + * @param {Function} equalFunc The function to determine equivalents of values. + * @param {Object} stack Tracks traversed `object` and `other` objects. + * @returns {boolean} Returns `true` if the objects are equivalent, else `false`. + */ + function equalByTag(object, other, tag, bitmask, customizer, equalFunc, stack) { + switch (tag) { + case dataViewTag: + if ((object.byteLength != other.byteLength) || + (object.byteOffset != other.byteOffset)) { + return false; + } + object = object.buffer; + other = other.buffer; - this.extras = {}; - this.knownParams = knownParams || []; - this.address = this.network = this.amount = this.message = null; + case arrayBufferTag: + if ((object.byteLength != other.byteLength) || + !equalFunc(new Uint8Array(object), new Uint8Array(other))) { + return false; + } + return true; - if (typeof(data) === 'string') { - var params = URI.parse(data); - if (params.amount) { - params.amount = this._parseAmount(params.amount); - } - this._fromObject(params); - } else if (typeof(data) === 'object') { - this._fromObject(data); - } else { - throw new TypeError('Unrecognized data format.'); - } -}; + case boolTag: + case dateTag: + case numberTag: + // Coerce booleans to `1` or `0` and dates to milliseconds. + // Invalid dates are coerced to `NaN`. + return eq(+object, +other); -/** - * Instantiate a URI from a String - * - * @param {string} str - JSON string or object of the URI - * @returns {URI} A new instance of a URI - */ -URI.fromString = function fromString(str) { - if (typeof(str) !== 'string') { - throw new TypeError('Expected a string'); - } - return new URI(str); -}; + case errorTag: + return object.name == other.name && object.message == other.message; -/** - * Instantiate a URI from an Object - * - * @param {Object} data - object of the URI - * @returns {URI} A new instance of a URI - */ -URI.fromObject = function fromObject(json) { - return new URI(json); -}; + case regexpTag: + case stringTag: + // Coerce regexes to strings and treat strings, primitives and objects, + // as equal. See http://www.ecma-international.org/ecma-262/7.0/#sec-regexp.prototype.tostring + // for more details. + return object == (other + ''); -/** - * Check if an bitcoin URI string is valid - * - * @example - * ```javascript - * - * var valid = URI.isValid('bitcoin:12A1MyfXbW6RhdRAZEqofac5jCQQjwEPBu'); - * // true - * ``` - * - * @param {string|Object} data - A bitcoin URI string or an Object - * @param {Array.=} knownParams - Required non-standard params - * @returns {boolean} Result of uri validation - */ -URI.isValid = function(arg, knownParams) { - try { - new URI(arg, knownParams); - } catch (err) { - return false; - } - return true; -}; + case mapTag: + var convert = mapToArray; -/** - * Convert a bitcoin URI string into a simple object. - * - * @param {string} uri - A bitcoin URI string - * @throws {TypeError} Invalid bitcoin URI - * @returns {Object} An object with the parsed params - */ -URI.parse = function(uri) { - var info = URL.parse(uri, true); + case setTag: + var isPartial = bitmask & COMPARE_PARTIAL_FLAG; + convert || (convert = setToArray); - if (info.protocol !== 'bitcoin:') { - throw new TypeError('Invalid bitcoin URI'); - } + if (object.size != other.size && !isPartial) { + return false; + } + // Assume cyclic values are equal. + var stacked = stack.get(object); + if (stacked) { + return stacked == other; + } + bitmask |= COMPARE_UNORDERED_FLAG; - // workaround to host insensitiveness - var group = /[^:]*:\/?\/?([^?]*)/.exec(uri); - info.query.address = group && group[1] || undefined; + // Recursively compare objects (susceptible to call stack limits). + stack.set(object, other); + var result = equalArrays(convert(object), convert(other), bitmask, customizer, equalFunc, stack); + stack['delete'](object); + return result; - return info.query; -}; + case symbolTag: + if (symbolValueOf) { + return symbolValueOf.call(object) == symbolValueOf.call(other); + } + } + return false; + } -URI.Members = ['address', 'amount', 'message', 'label', 'r']; + /** + * A specialized version of `baseIsEqualDeep` for objects with support for + * partial deep comparisons. + * + * @private + * @param {Object} object The object to compare. + * @param {Object} other The other object to compare. + * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details. + * @param {Function} customizer The function to customize comparisons. + * @param {Function} equalFunc The function to determine equivalents of values. + * @param {Object} stack Tracks traversed `object` and `other` objects. + * @returns {boolean} Returns `true` if the objects are equivalent, else `false`. + */ + function equalObjects(object, other, bitmask, customizer, equalFunc, stack) { + var isPartial = bitmask & COMPARE_PARTIAL_FLAG, + objProps = getAllKeys(object), + objLength = objProps.length, + othProps = getAllKeys(other), + othLength = othProps.length; -/** - * Internal function to load the URI instance with an object. - * - * @param {Object} obj - Object with the information - * @throws {TypeError} Invalid bitcoin address - * @throws {TypeError} Invalid amount - * @throws {Error} Unknown required argument - */ -URI.prototype._fromObject = function(obj) { - /* jshint maxcomplexity: 10 */ + if (objLength != othLength && !isPartial) { + return false; + } + var index = objLength; + while (index--) { + var key = objProps[index]; + if (!(isPartial ? key in other : hasOwnProperty.call(other, key))) { + return false; + } + } + // Assume cyclic values are equal. + var stacked = stack.get(object); + if (stacked && stack.get(other)) { + return stacked == other; + } + var result = true; + stack.set(object, other); + stack.set(other, object); - if (!Address.isValid(obj.address)) { - throw new TypeError('Invalid bitcoin address'); - } + var skipCtor = isPartial; + while (++index < objLength) { + key = objProps[index]; + var objValue = object[key], + othValue = other[key]; - this.address = new Address(obj.address); - this.network = this.address.network; - this.amount = obj.amount; + if (customizer) { + var compared = isPartial + ? customizer(othValue, objValue, key, other, object, stack) + : customizer(objValue, othValue, key, object, other, stack); + } + // Recursively compare objects (susceptible to call stack limits). + if (!(compared === undefined + ? (objValue === othValue || equalFunc(objValue, othValue, bitmask, customizer, stack)) + : compared + )) { + result = false; + break; + } + skipCtor || (skipCtor = key == 'constructor'); + } + if (result && !skipCtor) { + var objCtor = object.constructor, + othCtor = other.constructor; - for (var key in obj) { - if (key === 'address' || key === 'amount') { - continue; + // Non `Object` object instances with different constructors are not equal. + if (objCtor != othCtor && + ('constructor' in object && 'constructor' in other) && + !(typeof objCtor == 'function' && objCtor instanceof objCtor && + typeof othCtor == 'function' && othCtor instanceof othCtor)) { + result = false; + } + } + stack['delete'](object); + stack['delete'](other); + return result; } - if (/^req-/.exec(key) && this.knownParams.indexOf(key) === -1) { - throw Error('Unknown required argument ' + key); + /** + * A specialized version of `baseRest` which flattens the rest array. + * + * @private + * @param {Function} func The function to apply a rest parameter to. + * @returns {Function} Returns the new function. + */ + function flatRest(func) { + return setToString(overRest(func, undefined, flatten), func + ''); } - var destination = URI.Members.indexOf(key) > -1 ? this : this.extras; - destination[key] = obj[key]; - } -}; - -/** - * Internal function to transform a BTC string amount into satoshis - * - * @param {string} amount - Amount BTC string - * @throws {TypeError} Invalid amount - * @returns {Object} Amount represented in satoshis - */ -URI.prototype._parseAmount = function(amount) { - amount = Number(amount); - if (isNaN(amount)) { - throw new TypeError('Invalid amount'); - } - return Unit.fromBTC(amount).toSatoshis(); -}; + /** + * Creates an array of own enumerable property names and symbols of `object`. + * + * @private + * @param {Object} object The object to query. + * @returns {Array} Returns the array of property names and symbols. + */ + function getAllKeys(object) { + return baseGetAllKeys(object, keys, getSymbols); + } -URI.prototype.toObject = URI.prototype.toJSON = function toObject() { - var json = {}; - for (var i = 0; i < URI.Members.length; i++) { - var m = URI.Members[i]; - if (this.hasOwnProperty(m) && typeof(this[m]) !== 'undefined') { - json[m] = this[m].toString(); + /** + * Creates an array of own and inherited enumerable property names and + * symbols of `object`. + * + * @private + * @param {Object} object The object to query. + * @returns {Array} Returns the array of property names and symbols. + */ + function getAllKeysIn(object) { + return baseGetAllKeys(object, keysIn, getSymbolsIn); } - } - _.extend(json, this.extras); - return json; -}; -/** - * Will return a the string representation of the URI - * - * @returns {string} Bitcoin URI string - */ -URI.prototype.toString = function() { - var query = {}; - if (this.amount) { - query.amount = Unit.fromSatoshis(this.amount).toBTC(); - } - if (this.message) { - query.message = this.message; - } - if (this.label) { - query.label = this.label; - } - if (this.r) { - query.r = this.r; - } - _.extend(query, this.extras); + /** + * Gets metadata for `func`. + * + * @private + * @param {Function} func The function to query. + * @returns {*} Returns the metadata for `func`. + */ + var getData = !metaMap ? noop : function(func) { + return metaMap.get(func); + }; - return URL.format({ - protocol: 'bitcoin:', - host: this.address, - query: query - }); -}; + /** + * Gets the name of `func`. + * + * @private + * @param {Function} func The function to query. + * @returns {string} Returns the function name. + */ + function getFuncName(func) { + var result = (func.name + ''), + array = realNames[result], + length = hasOwnProperty.call(realNames, result) ? array.length : 0; -/** - * Will return a string formatted for the console - * - * @returns {string} Bitcoin URI - */ -URI.prototype.inspect = function() { - return ''; -}; + while (length--) { + var data = array[length], + otherFunc = data.func; + if (otherFunc == null || otherFunc == func) { + return data.name; + } + } + return result; + } -module.exports = URI; + /** + * Gets the argument placeholder value for `func`. + * + * @private + * @param {Function} func The function to inspect. + * @returns {*} Returns the placeholder value. + */ + function getHolder(func) { + var object = hasOwnProperty.call(lodash, 'placeholder') ? lodash : func; + return object.placeholder; + } -},{"./address":164,"./unit":204,"lodash":245,"url":160}],206:[function(require,module,exports){ -(function (Buffer){ -'use strict'; + /** + * Gets the appropriate "iteratee" function. If `_.iteratee` is customized, + * this function returns the custom method, otherwise it returns `baseIteratee`. + * If arguments are provided, the chosen function is invoked with them and + * its result is returned. + * + * @private + * @param {*} [value] The value to convert to an iteratee. + * @param {number} [arity] The arity of the created iteratee. + * @returns {Function} Returns the chosen function or its result. + */ + function getIteratee() { + var result = lodash.iteratee || iteratee; + result = result === iteratee ? baseIteratee : result; + return arguments.length ? result(arguments[0], arguments[1]) : result; + } -var buffer = require('buffer'); -var assert = require('assert'); + /** + * Gets the data for `map`. + * + * @private + * @param {Object} map The map to query. + * @param {string} key The reference key. + * @returns {*} Returns the map data. + */ + function getMapData(map, key) { + var data = map.__data__; + return isKeyable(key) + ? data[typeof key == 'string' ? 'string' : 'hash'] + : data.map; + } -var js = require('./js'); -var $ = require('./preconditions'); + /** + * Gets the property names, values, and compare flags of `object`. + * + * @private + * @param {Object} object The object to query. + * @returns {Array} Returns the match data of `object`. + */ + function getMatchData(object) { + var result = keys(object), + length = result.length; -function equals(a, b) { - if (a.length !== b.length) { - return false; - } - var length = a.length; - for (var i = 0; i < length; i++) { - if (a[i] !== b[i]) { - return false; + while (length--) { + var key = result[length], + value = object[key]; + + result[length] = [key, value, isStrictComparable(value)]; + } + return result; } - } - return true; -} -module.exports = { - /** - * Fill a buffer with a value. - * - * @param {Buffer} buffer - * @param {number} value - * @return {Buffer} - */ - fill: function fill(buffer, value) { - $.checkArgumentType(buffer, 'Buffer', 'buffer'); - $.checkArgumentType(value, 'number', 'value'); - var length = buffer.length; - for (var i = 0; i < length; i++) { - buffer[i] = value; + /** + * Gets the native function at `key` of `object`. + * + * @private + * @param {Object} object The object to query. + * @param {string} key The key of the method to get. + * @returns {*} Returns the function if it's native, else `undefined`. + */ + function getNative(object, key) { + var value = getValue(object, key); + return baseIsNative(value) ? value : undefined; } - return buffer; - }, - /** - * Return a copy of a buffer - * - * @param {Buffer} original - * @return {Buffer} - */ - copy: function(original) { - var buffer = Buffer.alloc(original.length); - original.copy(buffer); - return buffer; - }, + /** + * A specialized version of `baseGetTag` which ignores `Symbol.toStringTag` values. + * + * @private + * @param {*} value The value to query. + * @returns {string} Returns the raw `toStringTag`. + */ + function getRawTag(value) { + var isOwn = hasOwnProperty.call(value, symToStringTag), + tag = value[symToStringTag]; - /** - * Returns true if the given argument is an instance of a buffer. Tests for - * both node's Buffer and Uint8Array - * - * @param {*} arg - * @return {boolean} - */ - isBuffer: function isBuffer(arg) { - return buffer.Buffer.isBuffer(arg) || arg instanceof Uint8Array; - }, + try { + value[symToStringTag] = undefined; + var unmasked = true; + } catch (e) {} + + var result = nativeObjectToString.call(value); + if (unmasked) { + if (isOwn) { + value[symToStringTag] = tag; + } else { + delete value[symToStringTag]; + } + } + return result; + } + + /** + * Creates an array of the own enumerable symbols of `object`. + * + * @private + * @param {Object} object The object to query. + * @returns {Array} Returns the array of symbols. + */ + var getSymbols = !nativeGetSymbols ? stubArray : function(object) { + if (object == null) { + return []; + } + object = Object(object); + return arrayFilter(nativeGetSymbols(object), function(symbol) { + return propertyIsEnumerable.call(object, symbol); + }); + }; + + /** + * Creates an array of the own and inherited enumerable symbols of `object`. + * + * @private + * @param {Object} object The object to query. + * @returns {Array} Returns the array of symbols. + */ + var getSymbolsIn = !nativeGetSymbols ? stubArray : function(object) { + var result = []; + while (object) { + arrayPush(result, getSymbols(object)); + object = getPrototype(object); + } + return result; + }; + + /** + * Gets the `toStringTag` of `value`. + * + * @private + * @param {*} value The value to query. + * @returns {string} Returns the `toStringTag`. + */ + var getTag = baseGetTag; + + // Fallback for data views, maps, sets, and weak maps in IE 11 and promises in Node.js < 6. + if ((DataView && getTag(new DataView(new ArrayBuffer(1))) != dataViewTag) || + (Map && getTag(new Map) != mapTag) || + (Promise && getTag(Promise.resolve()) != promiseTag) || + (Set && getTag(new Set) != setTag) || + (WeakMap && getTag(new WeakMap) != weakMapTag)) { + getTag = function(value) { + var result = baseGetTag(value), + Ctor = result == objectTag ? value.constructor : undefined, + ctorString = Ctor ? toSource(Ctor) : ''; - /** - * Returns a zero-filled byte array - * - * @param {number} bytes - * @return {Buffer} - */ - emptyBuffer: function emptyBuffer(bytes) { - $.checkArgumentType(bytes, 'number', 'bytes'); - var result = new buffer.Buffer(bytes); - for (var i = 0; i < bytes; i++) { - result.write('\0', i); + if (ctorString) { + switch (ctorString) { + case dataViewCtorString: return dataViewTag; + case mapCtorString: return mapTag; + case promiseCtorString: return promiseTag; + case setCtorString: return setTag; + case weakMapCtorString: return weakMapTag; + } + } + return result; + }; } - return result; - }, - /** - * Concatenates a buffer - * - * Shortcut for buffer.Buffer.concat - */ - concat: buffer.Buffer.concat, - - equals: equals, - equal: equals, + /** + * Gets the view, applying any `transforms` to the `start` and `end` positions. + * + * @private + * @param {number} start The start of the view. + * @param {number} end The end of the view. + * @param {Array} transforms The transformations to apply to the view. + * @returns {Object} Returns an object containing the `start` and `end` + * positions of the view. + */ + function getView(start, end, transforms) { + var index = -1, + length = transforms.length; - /** - * Transforms a number from 0 to 255 into a Buffer of size 1 with that value - * - * @param {number} integer - * @return {Buffer} - */ - integerAsSingleByteBuffer: function integerAsSingleByteBuffer(integer) { - $.checkArgumentType(integer, 'number', 'integer'); - return new buffer.Buffer([integer & 0xff]); - }, + while (++index < length) { + var data = transforms[index], + size = data.size; - /** - * Transform a 4-byte integer into a Buffer of length 4. - * - * @param {number} integer - * @return {Buffer} - */ - integerAsBuffer: function integerAsBuffer(integer) { - $.checkArgumentType(integer, 'number', 'integer'); - var bytes = []; - bytes.push((integer >> 24) & 0xff); - bytes.push((integer >> 16) & 0xff); - bytes.push((integer >> 8) & 0xff); - bytes.push(integer & 0xff); - return Buffer.from(bytes); - }, + switch (data.type) { + case 'drop': start += size; break; + case 'dropRight': end -= size; break; + case 'take': end = nativeMin(end, start + size); break; + case 'takeRight': start = nativeMax(start, end - size); break; + } + } + return { 'start': start, 'end': end }; + } - /** - * Transform the first 4 values of a Buffer into a number, in little endian encoding - * - * @param {Buffer} buffer - * @return {number} - */ - integerFromBuffer: function integerFromBuffer(buffer) { - $.checkArgumentType(buffer, 'Buffer', 'buffer'); - return buffer[0] << 24 | buffer[1] << 16 | buffer[2] << 8 | buffer[3]; - }, + /** + * Extracts wrapper details from the `source` body comment. + * + * @private + * @param {string} source The source to inspect. + * @returns {Array} Returns the wrapper details. + */ + function getWrapDetails(source) { + var match = source.match(reWrapDetails); + return match ? match[1].split(reSplitDetails) : []; + } - /** - * Transforms the first byte of an array into a number ranging from -128 to 127 - * @param {Buffer} buffer - * @return {number} - */ - integerFromSingleByteBuffer: function integerFromBuffer(buffer) { - $.checkArgumentType(buffer, 'Buffer', 'buffer'); - return buffer[0]; - }, + /** + * Checks if `path` exists on `object`. + * + * @private + * @param {Object} object The object to query. + * @param {Array|string} path The path to check. + * @param {Function} hasFunc The function to check properties. + * @returns {boolean} Returns `true` if `path` exists, else `false`. + */ + function hasPath(object, path, hasFunc) { + path = castPath(path, object); - /** - * Transforms a buffer into a string with a number in hexa representation - * - * Shorthand for buffer.toString('hex') - * - * @param {Buffer} buffer - * @return {string} - */ - bufferToHex: function bufferToHex(buffer) { - $.checkArgumentType(buffer, 'Buffer', 'buffer'); - return buffer.toString('hex'); - }, + var index = -1, + length = path.length, + result = false; - /** - * Reverse a buffer - * @param {Buffer} param - * @return {Buffer} - */ - reverse: function reverse(param) { - var ret = new buffer.Buffer(param.length); - for (var i = 0; i < param.length; i++) { - ret[i] = param[param.length - i - 1]; + while (++index < length) { + var key = toKey(path[index]); + if (!(result = object != null && hasFunc(object, key))) { + break; + } + object = object[key]; + } + if (result || ++index != length) { + return result; + } + length = object == null ? 0 : object.length; + return !!length && isLength(length) && isIndex(key, length) && + (isArray(object) || isArguments(object)); } - return ret; - }, - /** - * Transforms an hexa encoded string into a Buffer with binary values - * - * Shorthand for Buffer(string, 'hex') - * - * @param {string} string - * @return {Buffer} - */ - hexToBuffer: function hexToBuffer(string) { - assert(js.isHexa(string)); - return new buffer.Buffer(string, 'hex'); - } -}; + /** + * Initializes an array clone. + * + * @private + * @param {Array} array The array to clone. + * @returns {Array} Returns the initialized clone. + */ + function initCloneArray(array) { + var length = array.length, + result = new array.constructor(length); -module.exports.NULL_HASH = module.exports.fill(Buffer.alloc(32), 0); -module.exports.EMPTY_BUFFER = Buffer.alloc(0); + // Add properties assigned by `RegExp#exec`. + if (length && typeof array[0] == 'string' && hasOwnProperty.call(array, 'index')) { + result.index = array.index; + result.input = array.input; + } + return result; + } -}).call(this,require("buffer").Buffer) -},{"./js":207,"./preconditions":208,"assert":15,"buffer":52}],207:[function(require,module,exports){ -'use strict'; + /** + * Initializes an object clone. + * + * @private + * @param {Object} object The object to clone. + * @returns {Object} Returns the initialized clone. + */ + function initCloneObject(object) { + return (typeof object.constructor == 'function' && !isPrototype(object)) + ? baseCreate(getPrototype(object)) + : {}; + } -var _ = require('lodash'); + /** + * Initializes an object clone based on its `toStringTag`. + * + * **Note:** This function only supports cloning values with tags of + * `Boolean`, `Date`, `Error`, `Map`, `Number`, `RegExp`, `Set`, or `String`. + * + * @private + * @param {Object} object The object to clone. + * @param {string} tag The `toStringTag` of the object to clone. + * @param {boolean} [isDeep] Specify a deep clone. + * @returns {Object} Returns the initialized clone. + */ + function initCloneByTag(object, tag, isDeep) { + var Ctor = object.constructor; + switch (tag) { + case arrayBufferTag: + return cloneArrayBuffer(object); -/** - * Determines whether a string contains only hexadecimal values - * - * @name JSUtil.isHexa - * @param {string} value - * @return {boolean} true if the string is the hexa representation of a number - */ -var isHexa = function isHexa(value) { - if (!_.isString(value)) { - return false; - } - return /^[0-9a-fA-F]+$/.test(value); -}; + case boolTag: + case dateTag: + return new Ctor(+object); -/** - * @namespace JSUtil - */ -module.exports = { - /** - * Test if an argument is a valid JSON object. If it is, returns a truthy - * value (the json object decoded), so no double JSON.parse call is necessary - * - * @param {string} arg - * @return {Object|boolean} false if the argument is not a JSON string. - */ - isValidJSON: function isValidJSON(arg) { - var parsed; - if (!_.isString(arg)) { - return false; - } - try { - parsed = JSON.parse(arg); - } catch (e) { - return false; - } - if (typeof(parsed) === 'object') { - return true; - } - return false; - }, - isHexa: isHexa, - isHexaString: isHexa, + case dataViewTag: + return cloneDataView(object, isDeep); - /** - * Clone an array - */ - cloneArray: function(array) { - return [].concat(array); - }, + case float32Tag: case float64Tag: + case int8Tag: case int16Tag: case int32Tag: + case uint8Tag: case uint8ClampedTag: case uint16Tag: case uint32Tag: + return cloneTypedArray(object, isDeep); - /** - * Define immutable properties on a target object - * - * @param {Object} target - An object to be extended - * @param {Object} values - An object of properties - * @return {Object} The target object - */ - defineImmutable: function defineImmutable(target, values) { - Object.keys(values).forEach(function(key){ - Object.defineProperty(target, key, { - configurable: false, - enumerable: true, - value: values[key] - }); - }); - return target; - }, - /** - * Checks that a value is a natural number, a positive integer or zero. - * - * @param {*} value - * @return {Boolean} - */ - isNaturalNumber: function isNaturalNumber(value) { - return typeof value === 'number' && - isFinite(value) && - Math.floor(value) === value && - value >= 0; - } -}; + case mapTag: + return new Ctor; -},{"lodash":245}],208:[function(require,module,exports){ -'use strict'; + case numberTag: + case stringTag: + return new Ctor(object); -var errors = require('../errors'); -var _ = require('lodash'); + case regexpTag: + return cloneRegExp(object); -module.exports = { - checkState: function(condition, message) { - if (!condition) { - throw new errors.InvalidState(message); - } - }, - checkArgument: function(condition, argumentName, message, docsPath) { - if (!condition) { - throw new errors.InvalidArgument(argumentName, message, docsPath); - } - }, - checkArgumentType: function(argument, type, argumentName) { - argumentName = argumentName || '(unknown name)'; - if (_.isString(type)) { - if (type === 'Buffer') { - var buffer = require('buffer'); // './buffer' fails on cordova & RN - if (!buffer.Buffer.isBuffer(argument)) { - throw new errors.InvalidArgumentType(argument, type, argumentName); - } - } else if (typeof argument !== type) { - throw new errors.InvalidArgumentType(argument, type, argumentName); - } - } else { - if (!(argument instanceof type)) { - throw new errors.InvalidArgumentType(argument, type.name, argumentName); + case setTag: + return new Ctor; + + case symbolTag: + return cloneSymbol(object); } } - } -}; -},{"../errors":180,"buffer":52,"lodash":245}],209:[function(require,module,exports){ -// base-x encoding / decoding -// Copyright (c) 2018 base-x contributors -// Copyright (c) 2014-2018 The Bitcoin Core developers (base58.cpp) -// Distributed under the MIT software license, see the accompanying -// file LICENSE or http://www.opensource.org/licenses/mit-license.php. + /** + * Inserts wrapper `details` in a comment at the top of the `source` body. + * + * @private + * @param {string} source The source to modify. + * @returns {Array} details The details to insert. + * @returns {string} Returns the modified source. + */ + function insertWrapDetails(source, details) { + var length = details.length; + if (!length) { + return source; + } + var lastIndex = length - 1; + details[lastIndex] = (length > 1 ? '& ' : '') + details[lastIndex]; + details = details.join(length > 2 ? ', ' : ' '); + return source.replace(reWrapComment, '{\n/* [wrapped with ' + details + '] */\n'); + } -const Buffer = require('safe-buffer').Buffer + /** + * Checks if `value` is a flattenable `arguments` object or array. + * + * @private + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is flattenable, else `false`. + */ + function isFlattenable(value) { + return isArray(value) || isArguments(value) || + !!(spreadableSymbol && value && value[spreadableSymbol]); + } -module.exports = function base (ALPHABET) { - if (ALPHABET.length >= 255) throw new TypeError('Alphabet too long') + /** + * Checks if `value` is a valid array-like index. + * + * @private + * @param {*} value The value to check. + * @param {number} [length=MAX_SAFE_INTEGER] The upper bounds of a valid index. + * @returns {boolean} Returns `true` if `value` is a valid index, else `false`. + */ + function isIndex(value, length) { + var type = typeof value; + length = length == null ? MAX_SAFE_INTEGER : length; - const BASE_MAP = new Uint8Array(256) - BASE_MAP.fill(255) + return !!length && + (type == 'number' || + (type != 'symbol' && reIsUint.test(value))) && + (value > -1 && value % 1 == 0 && value < length); + } - for (let i = 0; i < ALPHABET.length; i++) { - const x = ALPHABET.charAt(i) - const xc = x.charCodeAt(0) + /** + * Checks if the given arguments are from an iteratee call. + * + * @private + * @param {*} value The potential iteratee value argument. + * @param {*} index The potential iteratee index or key argument. + * @param {*} object The potential iteratee object argument. + * @returns {boolean} Returns `true` if the arguments are from an iteratee call, + * else `false`. + */ + function isIterateeCall(value, index, object) { + if (!isObject(object)) { + return false; + } + var type = typeof index; + if (type == 'number' + ? (isArrayLike(object) && isIndex(index, object.length)) + : (type == 'string' && index in object) + ) { + return eq(object[index], value); + } + return false; + } - if (BASE_MAP[xc] !== 255) throw new TypeError(x + ' is ambiguous') - BASE_MAP[xc] = i - } + /** + * Checks if `value` is a property name and not a property path. + * + * @private + * @param {*} value The value to check. + * @param {Object} [object] The object to query keys on. + * @returns {boolean} Returns `true` if `value` is a property name, else `false`. + */ + function isKey(value, object) { + if (isArray(value)) { + return false; + } + var type = typeof value; + if (type == 'number' || type == 'symbol' || type == 'boolean' || + value == null || isSymbol(value)) { + return true; + } + return reIsPlainProp.test(value) || !reIsDeepProp.test(value) || + (object != null && value in Object(object)); + } - const BASE = ALPHABET.length - const LEADER = ALPHABET.charAt(0) - const FACTOR = Math.log(BASE) / Math.log(256) // log(BASE) / log(256), rounded up - const iFACTOR = Math.log(256) / Math.log(BASE) // log(256) / log(BASE), rounded up + /** + * Checks if `value` is suitable for use as unique object key. + * + * @private + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is suitable, else `false`. + */ + function isKeyable(value) { + var type = typeof value; + return (type == 'string' || type == 'number' || type == 'symbol' || type == 'boolean') + ? (value !== '__proto__') + : (value === null); + } - function encode (source) { - if (!Buffer.isBuffer(source)) throw new TypeError('Expected Buffer') - if (source.length === 0) return '' + /** + * Checks if `func` has a lazy counterpart. + * + * @private + * @param {Function} func The function to check. + * @returns {boolean} Returns `true` if `func` has a lazy counterpart, + * else `false`. + */ + function isLaziable(func) { + var funcName = getFuncName(func), + other = lodash[funcName]; - // Skip & count leading zeroes. - let zeroes = 0 - let length = 0 - let pbegin = 0 - const pend = source.length + if (typeof other != 'function' || !(funcName in LazyWrapper.prototype)) { + return false; + } + if (func === other) { + return true; + } + var data = getData(other); + return !!data && func === data[0]; + } - while (pbegin !== pend && source[pbegin] === 0) { - pbegin++ - zeroes++ + /** + * Checks if `func` has its source masked. + * + * @private + * @param {Function} func The function to check. + * @returns {boolean} Returns `true` if `func` is masked, else `false`. + */ + function isMasked(func) { + return !!maskSrcKey && (maskSrcKey in func); } - // Allocate enough space in big-endian base58 representation. - const size = ((pend - pbegin) * iFACTOR + 1) >>> 0 - const b58 = new Uint8Array(size) + /** + * Checks if `func` is capable of being masked. + * + * @private + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `func` is maskable, else `false`. + */ + var isMaskable = coreJsData ? isFunction : stubFalse; - // Process the bytes. - while (pbegin !== pend) { - let carry = source[pbegin] + /** + * Checks if `value` is likely a prototype object. + * + * @private + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is a prototype, else `false`. + */ + function isPrototype(value) { + var Ctor = value && value.constructor, + proto = (typeof Ctor == 'function' && Ctor.prototype) || objectProto; - // Apply "b58 = b58 * 256 + ch". - let i = 0 - for (let it = size - 1; (carry !== 0 || i < length) && (it !== -1); it--, i++) { - carry += (256 * b58[it]) >>> 0 - b58[it] = (carry % BASE) >>> 0 - carry = (carry / BASE) >>> 0 - } + return value === proto; + } - if (carry !== 0) throw new Error('Non-zero carry') - length = i - pbegin++ + /** + * Checks if `value` is suitable for strict equality comparisons, i.e. `===`. + * + * @private + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` if suitable for strict + * equality comparisons, else `false`. + */ + function isStrictComparable(value) { + return value === value && !isObject(value); } - // Skip leading zeroes in base58 result. - let it = size - length - while (it !== size && b58[it] === 0) { - it++ + /** + * A specialized version of `matchesProperty` for source values suitable + * for strict equality comparisons, i.e. `===`. + * + * @private + * @param {string} key The key of the property to get. + * @param {*} srcValue The value to match. + * @returns {Function} Returns the new spec function. + */ + function matchesStrictComparable(key, srcValue) { + return function(object) { + if (object == null) { + return false; + } + return object[key] === srcValue && + (srcValue !== undefined || (key in Object(object))); + }; } - // Translate the result into a string. - let str = LEADER.repeat(zeroes) - for (; it < size; ++it) str += ALPHABET.charAt(b58[it]) + /** + * A specialized version of `_.memoize` which clears the memoized function's + * cache when it exceeds `MAX_MEMOIZE_SIZE`. + * + * @private + * @param {Function} func The function to have its output memoized. + * @returns {Function} Returns the new memoized function. + */ + function memoizeCapped(func) { + var result = memoize(func, function(key) { + if (cache.size === MAX_MEMOIZE_SIZE) { + cache.clear(); + } + return key; + }); - return str - } + var cache = result.cache; + return result; + } - function decodeUnsafe (source) { - if (typeof source !== 'string') throw new TypeError('Expected String') - if (source.length === 0) return Buffer.alloc(0) + /** + * Merges the function metadata of `source` into `data`. + * + * Merging metadata reduces the number of wrappers used to invoke a function. + * This is possible because methods like `_.bind`, `_.curry`, and `_.partial` + * may be applied regardless of execution order. Methods like `_.ary` and + * `_.rearg` modify function arguments, making the order in which they are + * executed important, preventing the merging of metadata. However, we make + * an exception for a safe combined case where curried functions have `_.ary` + * and or `_.rearg` applied. + * + * @private + * @param {Array} data The destination metadata. + * @param {Array} source The source metadata. + * @returns {Array} Returns `data`. + */ + function mergeData(data, source) { + var bitmask = data[1], + srcBitmask = source[1], + newBitmask = bitmask | srcBitmask, + isCommon = newBitmask < (WRAP_BIND_FLAG | WRAP_BIND_KEY_FLAG | WRAP_ARY_FLAG); - let psz = 0 + var isCombo = + ((srcBitmask == WRAP_ARY_FLAG) && (bitmask == WRAP_CURRY_FLAG)) || + ((srcBitmask == WRAP_ARY_FLAG) && (bitmask == WRAP_REARG_FLAG) && (data[7].length <= source[8])) || + ((srcBitmask == (WRAP_ARY_FLAG | WRAP_REARG_FLAG)) && (source[7].length <= source[8]) && (bitmask == WRAP_CURRY_FLAG)); - // Skip leading spaces. - if (source[psz] === ' ') return + // Exit early if metadata can't be merged. + if (!(isCommon || isCombo)) { + return data; + } + // Use source `thisArg` if available. + if (srcBitmask & WRAP_BIND_FLAG) { + data[2] = source[2]; + // Set when currying a bound function. + newBitmask |= bitmask & WRAP_BIND_FLAG ? 0 : WRAP_CURRY_BOUND_FLAG; + } + // Compose partial arguments. + var value = source[3]; + if (value) { + var partials = data[3]; + data[3] = partials ? composeArgs(partials, value, source[4]) : value; + data[4] = partials ? replaceHolders(data[3], PLACEHOLDER) : source[4]; + } + // Compose partial right arguments. + value = source[5]; + if (value) { + partials = data[5]; + data[5] = partials ? composeArgsRight(partials, value, source[6]) : value; + data[6] = partials ? replaceHolders(data[5], PLACEHOLDER) : source[6]; + } + // Use source `argPos` if available. + value = source[7]; + if (value) { + data[7] = value; + } + // Use source `ary` if it's smaller. + if (srcBitmask & WRAP_ARY_FLAG) { + data[8] = data[8] == null ? source[8] : nativeMin(data[8], source[8]); + } + // Use source `arity` if one is not provided. + if (data[9] == null) { + data[9] = source[9]; + } + // Use source `func` and merge bitmasks. + data[0] = source[0]; + data[1] = newBitmask; - // Skip and count leading '1's. - let zeroes = 0 - let length = 0 - while (source[psz] === LEADER) { - zeroes++ - psz++ + return data; } - // Allocate enough space in big-endian base256 representation. - const size = (((source.length - psz) * FACTOR) + 1) >>> 0 // log(58) / log(256), rounded up. - const b256 = new Uint8Array(size) + /** + * This function is like + * [`Object.keys`](http://ecma-international.org/ecma-262/7.0/#sec-object.keys) + * except that it includes inherited enumerable properties. + * + * @private + * @param {Object} object The object to query. + * @returns {Array} Returns the array of property names. + */ + function nativeKeysIn(object) { + var result = []; + if (object != null) { + for (var key in Object(object)) { + result.push(key); + } + } + return result; + } - // Process the characters. - while (source[psz]) { - // Decode character - let carry = BASE_MAP[source.charCodeAt(psz)] + /** + * Converts `value` to a string using `Object.prototype.toString`. + * + * @private + * @param {*} value The value to convert. + * @returns {string} Returns the converted string. + */ + function objectToString(value) { + return nativeObjectToString.call(value); + } - // Invalid character - if (carry === 255) return + /** + * A specialized version of `baseRest` which transforms the rest array. + * + * @private + * @param {Function} func The function to apply a rest parameter to. + * @param {number} [start=func.length-1] The start position of the rest parameter. + * @param {Function} transform The rest array transform. + * @returns {Function} Returns the new function. + */ + function overRest(func, start, transform) { + start = nativeMax(start === undefined ? (func.length - 1) : start, 0); + return function() { + var args = arguments, + index = -1, + length = nativeMax(args.length - start, 0), + array = Array(length); - let i = 0 - for (let it = size - 1; (carry !== 0 || i < length) && (it !== -1); it--, i++) { - carry += (BASE * b256[it]) >>> 0 - b256[it] = (carry % 256) >>> 0 - carry = (carry / 256) >>> 0 - } + while (++index < length) { + array[index] = args[start + index]; + } + index = -1; + var otherArgs = Array(start + 1); + while (++index < start) { + otherArgs[index] = args[index]; + } + otherArgs[start] = transform(array); + return apply(func, this, otherArgs); + }; + } - if (carry !== 0) throw new Error('Non-zero carry') - length = i - psz++ + /** + * Gets the parent value at `path` of `object`. + * + * @private + * @param {Object} object The object to query. + * @param {Array} path The path to get the parent value of. + * @returns {*} Returns the parent value. + */ + function parent(object, path) { + return path.length < 2 ? object : baseGet(object, baseSlice(path, 0, -1)); } - // Skip trailing spaces. - if (source[psz] === ' ') return + /** + * Reorder `array` according to the specified indexes where the element at + * the first index is assigned as the first element, the element at + * the second index is assigned as the second element, and so on. + * + * @private + * @param {Array} array The array to reorder. + * @param {Array} indexes The arranged array indexes. + * @returns {Array} Returns `array`. + */ + function reorder(array, indexes) { + var arrLength = array.length, + length = nativeMin(indexes.length, arrLength), + oldArray = copyArray(array); - // Skip leading zeroes in b256. - let it = size - length - while (it !== size && b256[it] === 0) { - it++ + while (length--) { + var index = indexes[length]; + array[length] = isIndex(index, arrLength) ? oldArray[index] : undefined; + } + return array; } - const vch = Buffer.allocUnsafe(zeroes + (size - it)) - vch.fill(0x00, 0, zeroes) + /** + * Gets the value at `key`, unless `key` is "__proto__". + * + * @private + * @param {Object} object The object to query. + * @param {string} key The key of the property to get. + * @returns {*} Returns the property value. + */ + function safeGet(object, key) { + if (key == '__proto__') { + return; + } - let j = zeroes - while (it !== size) { - vch[j++] = b256[it++] + return object[key]; } - return vch - } - - function decode (string) { - const buffer = decodeUnsafe(string) - if (buffer) return buffer + /** + * Sets metadata for `func`. + * + * **Note:** If this function becomes hot, i.e. is invoked a lot in a short + * period of time, it will trip its breaker and transition to an identity + * function to avoid garbage collection pauses in V8. See + * [V8 issue 2070](https://bugs.chromium.org/p/v8/issues/detail?id=2070) + * for more details. + * + * @private + * @param {Function} func The function to associate metadata with. + * @param {*} data The metadata. + * @returns {Function} Returns `func`. + */ + var setData = shortOut(baseSetData); - throw new Error('Non-base' + BASE + ' character') - } + /** + * A simple wrapper around the global [`setTimeout`](https://mdn.io/setTimeout). + * + * @private + * @param {Function} func The function to delay. + * @param {number} wait The number of milliseconds to delay invocation. + * @returns {number|Object} Returns the timer id or timeout object. + */ + var setTimeout = ctxSetTimeout || function(func, wait) { + return root.setTimeout(func, wait); + }; - return { - encode: encode, - decodeUnsafe: decodeUnsafe, - decode: decode - } -} + /** + * Sets the `toString` method of `func` to return `string`. + * + * @private + * @param {Function} func The function to modify. + * @param {Function} string The `toString` result. + * @returns {Function} Returns `func`. + */ + var setToString = shortOut(baseSetToString); -},{"safe-buffer":248}],210:[function(require,module,exports){ -arguments[4][20][0].apply(exports,arguments) -},{"buffer":22,"dup":20}],211:[function(require,module,exports){ -arguments[4][21][0].apply(exports,arguments) -},{"crypto":22,"dup":21}],212:[function(require,module,exports){ -var basex = require('base-x') -var ALPHABET = '123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz' + /** + * Sets the `toString` method of `wrapper` to mimic the source of `reference` + * with wrapper details in a comment at the top of the source body. + * + * @private + * @param {Function} wrapper The function to modify. + * @param {Function} reference The reference function. + * @param {number} bitmask The bitmask flags. See `createWrap` for more details. + * @returns {Function} Returns `wrapper`. + */ + function setWrapToString(wrapper, reference, bitmask) { + var source = (reference + ''); + return setToString(wrapper, insertWrapDetails(source, updateWrapDetails(getWrapDetails(source), bitmask))); + } -module.exports = basex(ALPHABET) + /** + * Creates a function that'll short out and invoke `identity` instead + * of `func` when it's called `HOT_COUNT` or more times in `HOT_SPAN` + * milliseconds. + * + * @private + * @param {Function} func The function to restrict. + * @returns {Function} Returns the new shortable function. + */ + function shortOut(func) { + var count = 0, + lastCalled = 0; -},{"base-x":209}],213:[function(require,module,exports){ -module.exports = function(a, b) { - if (typeof a.compare === 'function') return a.compare(b) - if (a === b) return 0 + return function() { + var stamp = nativeNow(), + remaining = HOT_SPAN - (stamp - lastCalled); - var x = a.length - var y = b.length + lastCalled = stamp; + if (remaining > 0) { + if (++count >= HOT_COUNT) { + return arguments[0]; + } + } else { + count = 0; + } + return func.apply(undefined, arguments); + }; + } - var i = 0 - var len = Math.min(x, y) - while (i < len) { - if (a[i] !== b[i]) break + /** + * A specialized version of `_.shuffle` which mutates and sets the size of `array`. + * + * @private + * @param {Array} array The array to shuffle. + * @param {number} [size=array.length] The size of `array`. + * @returns {Array} Returns `array`. + */ + function shuffleSelf(array, size) { + var index = -1, + length = array.length, + lastIndex = length - 1; - ++i - } + size = size === undefined ? length : size; + while (++index < size) { + var rand = baseRandom(index, lastIndex), + value = array[rand]; - if (i !== len) { - x = a[i] - y = b[i] - } + array[rand] = array[index]; + array[index] = value; + } + array.length = size; + return array; + } - if (x < y) return -1 - if (y < x) return 1 - return 0 -} + /** + * Converts `string` to a property path array. + * + * @private + * @param {string} string The string to convert. + * @returns {Array} Returns the property path array. + */ + var stringToPath = memoizeCapped(function(string) { + var result = []; + if (string.charCodeAt(0) === 46 /* . */) { + result.push(''); + } + string.replace(rePropName, function(match, number, quote, subString) { + result.push(quote ? subString.replace(reEscapeChar, '$1') : (number || match)); + }); + return result; + }); + /** + * Converts `value` to a string key if it's not a string or symbol. + * + * @private + * @param {*} value The value to inspect. + * @returns {string|symbol} Returns the key. + */ + function toKey(value) { + if (typeof value == 'string' || isSymbol(value)) { + return value; + } + var result = (value + ''); + return (result == '0' && (1 / value) == -INFINITY) ? '-0' : result; + } -},{}],214:[function(require,module,exports){ -arguments[4][71][0].apply(exports,arguments) -},{"../package.json":229,"./elliptic/curve":217,"./elliptic/curves":220,"./elliptic/ec":221,"./elliptic/eddsa":224,"./elliptic/utils":228,"brorand":211,"dup":71}],215:[function(require,module,exports){ -arguments[4][72][0].apply(exports,arguments) -},{"../../elliptic":214,"bn.js":210,"dup":72}],216:[function(require,module,exports){ -'use strict'; + /** + * Converts `func` to its source code. + * + * @private + * @param {Function} func The function to convert. + * @returns {string} Returns the source code. + */ + function toSource(func) { + if (func != null) { + try { + return funcToString.call(func); + } catch (e) {} + try { + return (func + ''); + } catch (e) {} + } + return ''; + } -var curve = require('../curve'); -var elliptic = require('../../elliptic'); -var BN = require('bn.js'); -var inherits = require('inherits'); -var Base = curve.base; + /** + * Updates wrapper `details` based on `bitmask` flags. + * + * @private + * @returns {Array} details The details to modify. + * @param {number} bitmask The bitmask flags. See `createWrap` for more details. + * @returns {Array} Returns `details`. + */ + function updateWrapDetails(details, bitmask) { + arrayEach(wrapFlags, function(pair) { + var value = '_.' + pair[0]; + if ((bitmask & pair[1]) && !arrayIncludes(details, value)) { + details.push(value); + } + }); + return details.sort(); + } -var assert = elliptic.utils.assert; + /** + * Creates a clone of `wrapper`. + * + * @private + * @param {Object} wrapper The wrapper to clone. + * @returns {Object} Returns the cloned wrapper. + */ + function wrapperClone(wrapper) { + if (wrapper instanceof LazyWrapper) { + return wrapper.clone(); + } + var result = new LodashWrapper(wrapper.__wrapped__, wrapper.__chain__); + result.__actions__ = copyArray(wrapper.__actions__); + result.__index__ = wrapper.__index__; + result.__values__ = wrapper.__values__; + return result; + } -function EdwardsCurve(conf) { - // NOTE: Important as we are creating point in Base.call() - this.twisted = (conf.a | 0) !== 1; - this.mOneA = this.twisted && (conf.a | 0) === -1; - this.extended = this.mOneA; + /*------------------------------------------------------------------------*/ - Base.call(this, 'edwards', conf); + /** + * Creates an array of elements split into groups the length of `size`. + * If `array` can't be split evenly, the final chunk will be the remaining + * elements. + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category Array + * @param {Array} array The array to process. + * @param {number} [size=1] The length of each chunk + * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`. + * @returns {Array} Returns the new array of chunks. + * @example + * + * _.chunk(['a', 'b', 'c', 'd'], 2); + * // => [['a', 'b'], ['c', 'd']] + * + * _.chunk(['a', 'b', 'c', 'd'], 3); + * // => [['a', 'b', 'c'], ['d']] + */ + function chunk(array, size, guard) { + if ((guard ? isIterateeCall(array, size, guard) : size === undefined)) { + size = 1; + } else { + size = nativeMax(toInteger(size), 0); + } + var length = array == null ? 0 : array.length; + if (!length || size < 1) { + return []; + } + var index = 0, + resIndex = 0, + result = Array(nativeCeil(length / size)); - this.a = new BN(conf.a, 16).umod(this.red.m); - this.a = this.a.toRed(this.red); - this.c = new BN(conf.c, 16).toRed(this.red); - this.c2 = this.c.redSqr(); - this.d = new BN(conf.d, 16).toRed(this.red); - this.dd = this.d.redAdd(this.d); + while (index < length) { + result[resIndex++] = baseSlice(array, index, (index += size)); + } + return result; + } - assert(!this.twisted || this.c.fromRed().cmpn(1) === 0); - this.oneC = (conf.c | 0) === 1; -} -inherits(EdwardsCurve, Base); -module.exports = EdwardsCurve; + /** + * Creates an array with all falsey values removed. The values `false`, `null`, + * `0`, `""`, `undefined`, and `NaN` are falsey. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Array + * @param {Array} array The array to compact. + * @returns {Array} Returns the new array of filtered values. + * @example + * + * _.compact([0, 1, false, 2, '', 3]); + * // => [1, 2, 3] + */ + function compact(array) { + var index = -1, + length = array == null ? 0 : array.length, + resIndex = 0, + result = []; -EdwardsCurve.prototype._mulA = function _mulA(num) { - if (this.mOneA) - return num.redNeg(); - else - return this.a.redMul(num); -}; + while (++index < length) { + var value = array[index]; + if (value) { + result[resIndex++] = value; + } + } + return result; + } -EdwardsCurve.prototype._mulC = function _mulC(num) { - if (this.oneC) - return num; - else - return this.c.redMul(num); -}; + /** + * Creates a new array concatenating `array` with any additional arrays + * and/or values. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Array + * @param {Array} array The array to concatenate. + * @param {...*} [values] The values to concatenate. + * @returns {Array} Returns the new concatenated array. + * @example + * + * var array = [1]; + * var other = _.concat(array, 2, [3], [[4]]); + * + * console.log(other); + * // => [1, 2, 3, [4]] + * + * console.log(array); + * // => [1] + */ + function concat() { + var length = arguments.length; + if (!length) { + return []; + } + var args = Array(length - 1), + array = arguments[0], + index = length; -// Just for compatibility with Short curve -EdwardsCurve.prototype.jpoint = function jpoint(x, y, z, t) { - return this.point(x, y, z, t); -}; + while (index--) { + args[index - 1] = arguments[index]; + } + return arrayPush(isArray(array) ? copyArray(array) : [array], baseFlatten(args, 1)); + } -EdwardsCurve.prototype.pointFromX = function pointFromX(x, odd) { - x = new BN(x, 16); - if (!x.red) - x = x.toRed(this.red); + /** + * Creates an array of `array` values not included in the other given arrays + * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero) + * for equality comparisons. The order and references of result values are + * determined by the first array. + * + * **Note:** Unlike `_.pullAll`, this method returns a new array. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Array + * @param {Array} array The array to inspect. + * @param {...Array} [values] The values to exclude. + * @returns {Array} Returns the new array of filtered values. + * @see _.without, _.xor + * @example + * + * _.difference([2, 1], [2, 3]); + * // => [1] + */ + var difference = baseRest(function(array, values) { + return isArrayLikeObject(array) + ? baseDifference(array, baseFlatten(values, 1, isArrayLikeObject, true)) + : []; + }); - var x2 = x.redSqr(); - var rhs = this.c2.redSub(this.a.redMul(x2)); - var lhs = this.one.redSub(this.c2.redMul(this.d).redMul(x2)); + /** + * This method is like `_.difference` except that it accepts `iteratee` which + * is invoked for each element of `array` and `values` to generate the criterion + * by which they're compared. The order and references of result values are + * determined by the first array. The iteratee is invoked with one argument: + * (value). + * + * **Note:** Unlike `_.pullAllBy`, this method returns a new array. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Array + * @param {Array} array The array to inspect. + * @param {...Array} [values] The values to exclude. + * @param {Function} [iteratee=_.identity] The iteratee invoked per element. + * @returns {Array} Returns the new array of filtered values. + * @example + * + * _.differenceBy([2.1, 1.2], [2.3, 3.4], Math.floor); + * // => [1.2] + * + * // The `_.property` iteratee shorthand. + * _.differenceBy([{ 'x': 2 }, { 'x': 1 }], [{ 'x': 1 }], 'x'); + * // => [{ 'x': 2 }] + */ + var differenceBy = baseRest(function(array, values) { + var iteratee = last(values); + if (isArrayLikeObject(iteratee)) { + iteratee = undefined; + } + return isArrayLikeObject(array) + ? baseDifference(array, baseFlatten(values, 1, isArrayLikeObject, true), getIteratee(iteratee, 2)) + : []; + }); - var y2 = rhs.redMul(lhs.redInvm()); - var y = y2.redSqrt(); - if (y.redSqr().redSub(y2).cmp(this.zero) !== 0) - throw new Error('invalid point'); + /** + * This method is like `_.difference` except that it accepts `comparator` + * which is invoked to compare elements of `array` to `values`. The order and + * references of result values are determined by the first array. The comparator + * is invoked with two arguments: (arrVal, othVal). + * + * **Note:** Unlike `_.pullAllWith`, this method returns a new array. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Array + * @param {Array} array The array to inspect. + * @param {...Array} [values] The values to exclude. + * @param {Function} [comparator] The comparator invoked per element. + * @returns {Array} Returns the new array of filtered values. + * @example + * + * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }]; + * + * _.differenceWith(objects, [{ 'x': 1, 'y': 2 }], _.isEqual); + * // => [{ 'x': 2, 'y': 1 }] + */ + var differenceWith = baseRest(function(array, values) { + var comparator = last(values); + if (isArrayLikeObject(comparator)) { + comparator = undefined; + } + return isArrayLikeObject(array) + ? baseDifference(array, baseFlatten(values, 1, isArrayLikeObject, true), undefined, comparator) + : []; + }); - var isOdd = y.fromRed().isOdd(); - if (odd && !isOdd || !odd && isOdd) - y = y.redNeg(); + /** + * Creates a slice of `array` with `n` elements dropped from the beginning. + * + * @static + * @memberOf _ + * @since 0.5.0 + * @category Array + * @param {Array} array The array to query. + * @param {number} [n=1] The number of elements to drop. + * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`. + * @returns {Array} Returns the slice of `array`. + * @example + * + * _.drop([1, 2, 3]); + * // => [2, 3] + * + * _.drop([1, 2, 3], 2); + * // => [3] + * + * _.drop([1, 2, 3], 5); + * // => [] + * + * _.drop([1, 2, 3], 0); + * // => [1, 2, 3] + */ + function drop(array, n, guard) { + var length = array == null ? 0 : array.length; + if (!length) { + return []; + } + n = (guard || n === undefined) ? 1 : toInteger(n); + return baseSlice(array, n < 0 ? 0 : n, length); + } - return this.point(x, y); -}; + /** + * Creates a slice of `array` with `n` elements dropped from the end. + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category Array + * @param {Array} array The array to query. + * @param {number} [n=1] The number of elements to drop. + * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`. + * @returns {Array} Returns the slice of `array`. + * @example + * + * _.dropRight([1, 2, 3]); + * // => [1, 2] + * + * _.dropRight([1, 2, 3], 2); + * // => [1] + * + * _.dropRight([1, 2, 3], 5); + * // => [] + * + * _.dropRight([1, 2, 3], 0); + * // => [1, 2, 3] + */ + function dropRight(array, n, guard) { + var length = array == null ? 0 : array.length; + if (!length) { + return []; + } + n = (guard || n === undefined) ? 1 : toInteger(n); + n = length - n; + return baseSlice(array, 0, n < 0 ? 0 : n); + } -EdwardsCurve.prototype.pointFromY = function pointFromY(y, odd) { - y = new BN(y, 16); - if (!y.red) - y = y.toRed(this.red); + /** + * Creates a slice of `array` excluding elements dropped from the end. + * Elements are dropped until `predicate` returns falsey. The predicate is + * invoked with three arguments: (value, index, array). + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category Array + * @param {Array} array The array to query. + * @param {Function} [predicate=_.identity] The function invoked per iteration. + * @returns {Array} Returns the slice of `array`. + * @example + * + * var users = [ + * { 'user': 'barney', 'active': true }, + * { 'user': 'fred', 'active': false }, + * { 'user': 'pebbles', 'active': false } + * ]; + * + * _.dropRightWhile(users, function(o) { return !o.active; }); + * // => objects for ['barney'] + * + * // The `_.matches` iteratee shorthand. + * _.dropRightWhile(users, { 'user': 'pebbles', 'active': false }); + * // => objects for ['barney', 'fred'] + * + * // The `_.matchesProperty` iteratee shorthand. + * _.dropRightWhile(users, ['active', false]); + * // => objects for ['barney'] + * + * // The `_.property` iteratee shorthand. + * _.dropRightWhile(users, 'active'); + * // => objects for ['barney', 'fred', 'pebbles'] + */ + function dropRightWhile(array, predicate) { + return (array && array.length) + ? baseWhile(array, getIteratee(predicate, 3), true, true) + : []; + } - // x^2 = (y^2 - 1) / (d y^2 + 1) - var y2 = y.redSqr(); - var lhs = y2.redSub(this.one); - var rhs = y2.redMul(this.d).redAdd(this.one); - var x2 = lhs.redMul(rhs.redInvm()); + /** + * Creates a slice of `array` excluding elements dropped from the beginning. + * Elements are dropped until `predicate` returns falsey. The predicate is + * invoked with three arguments: (value, index, array). + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category Array + * @param {Array} array The array to query. + * @param {Function} [predicate=_.identity] The function invoked per iteration. + * @returns {Array} Returns the slice of `array`. + * @example + * + * var users = [ + * { 'user': 'barney', 'active': false }, + * { 'user': 'fred', 'active': false }, + * { 'user': 'pebbles', 'active': true } + * ]; + * + * _.dropWhile(users, function(o) { return !o.active; }); + * // => objects for ['pebbles'] + * + * // The `_.matches` iteratee shorthand. + * _.dropWhile(users, { 'user': 'barney', 'active': false }); + * // => objects for ['fred', 'pebbles'] + * + * // The `_.matchesProperty` iteratee shorthand. + * _.dropWhile(users, ['active', false]); + * // => objects for ['pebbles'] + * + * // The `_.property` iteratee shorthand. + * _.dropWhile(users, 'active'); + * // => objects for ['barney', 'fred', 'pebbles'] + */ + function dropWhile(array, predicate) { + return (array && array.length) + ? baseWhile(array, getIteratee(predicate, 3), true) + : []; + } - if (x2.cmp(this.zero) === 0) { - if (odd) - throw new Error('invalid point'); - else - return this.point(this.zero, y); - } + /** + * Fills elements of `array` with `value` from `start` up to, but not + * including, `end`. + * + * **Note:** This method mutates `array`. + * + * @static + * @memberOf _ + * @since 3.2.0 + * @category Array + * @param {Array} array The array to fill. + * @param {*} value The value to fill `array` with. + * @param {number} [start=0] The start position. + * @param {number} [end=array.length] The end position. + * @returns {Array} Returns `array`. + * @example + * + * var array = [1, 2, 3]; + * + * _.fill(array, 'a'); + * console.log(array); + * // => ['a', 'a', 'a'] + * + * _.fill(Array(3), 2); + * // => [2, 2, 2] + * + * _.fill([4, 6, 8, 10], '*', 1, 3); + * // => [4, '*', '*', 10] + */ + function fill(array, value, start, end) { + var length = array == null ? 0 : array.length; + if (!length) { + return []; + } + if (start && typeof start != 'number' && isIterateeCall(array, value, start)) { + start = 0; + end = length; + } + return baseFill(array, value, start, end); + } - var x = x2.redSqrt(); - if (x.redSqr().redSub(x2).cmp(this.zero) !== 0) - throw new Error('invalid point'); + /** + * This method is like `_.find` except that it returns the index of the first + * element `predicate` returns truthy for instead of the element itself. + * + * @static + * @memberOf _ + * @since 1.1.0 + * @category Array + * @param {Array} array The array to inspect. + * @param {Function} [predicate=_.identity] The function invoked per iteration. + * @param {number} [fromIndex=0] The index to search from. + * @returns {number} Returns the index of the found element, else `-1`. + * @example + * + * var users = [ + * { 'user': 'barney', 'active': false }, + * { 'user': 'fred', 'active': false }, + * { 'user': 'pebbles', 'active': true } + * ]; + * + * _.findIndex(users, function(o) { return o.user == 'barney'; }); + * // => 0 + * + * // The `_.matches` iteratee shorthand. + * _.findIndex(users, { 'user': 'fred', 'active': false }); + * // => 1 + * + * // The `_.matchesProperty` iteratee shorthand. + * _.findIndex(users, ['active', false]); + * // => 0 + * + * // The `_.property` iteratee shorthand. + * _.findIndex(users, 'active'); + * // => 2 + */ + function findIndex(array, predicate, fromIndex) { + var length = array == null ? 0 : array.length; + if (!length) { + return -1; + } + var index = fromIndex == null ? 0 : toInteger(fromIndex); + if (index < 0) { + index = nativeMax(length + index, 0); + } + return baseFindIndex(array, getIteratee(predicate, 3), index); + } - if (x.isOdd() !== odd) - x = x.redNeg(); + /** + * This method is like `_.findIndex` except that it iterates over elements + * of `collection` from right to left. + * + * @static + * @memberOf _ + * @since 2.0.0 + * @category Array + * @param {Array} array The array to inspect. + * @param {Function} [predicate=_.identity] The function invoked per iteration. + * @param {number} [fromIndex=array.length-1] The index to search from. + * @returns {number} Returns the index of the found element, else `-1`. + * @example + * + * var users = [ + * { 'user': 'barney', 'active': true }, + * { 'user': 'fred', 'active': false }, + * { 'user': 'pebbles', 'active': false } + * ]; + * + * _.findLastIndex(users, function(o) { return o.user == 'pebbles'; }); + * // => 2 + * + * // The `_.matches` iteratee shorthand. + * _.findLastIndex(users, { 'user': 'barney', 'active': true }); + * // => 0 + * + * // The `_.matchesProperty` iteratee shorthand. + * _.findLastIndex(users, ['active', false]); + * // => 2 + * + * // The `_.property` iteratee shorthand. + * _.findLastIndex(users, 'active'); + * // => 0 + */ + function findLastIndex(array, predicate, fromIndex) { + var length = array == null ? 0 : array.length; + if (!length) { + return -1; + } + var index = length - 1; + if (fromIndex !== undefined) { + index = toInteger(fromIndex); + index = fromIndex < 0 + ? nativeMax(length + index, 0) + : nativeMin(index, length - 1); + } + return baseFindIndex(array, getIteratee(predicate, 3), index, true); + } - return this.point(x, y); -}; + /** + * Flattens `array` a single level deep. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Array + * @param {Array} array The array to flatten. + * @returns {Array} Returns the new flattened array. + * @example + * + * _.flatten([1, [2, [3, [4]], 5]]); + * // => [1, 2, [3, [4]], 5] + */ + function flatten(array) { + var length = array == null ? 0 : array.length; + return length ? baseFlatten(array, 1) : []; + } -EdwardsCurve.prototype.validate = function validate(point) { - if (point.isInfinity()) - return true; + /** + * Recursively flattens `array`. + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category Array + * @param {Array} array The array to flatten. + * @returns {Array} Returns the new flattened array. + * @example + * + * _.flattenDeep([1, [2, [3, [4]], 5]]); + * // => [1, 2, 3, 4, 5] + */ + function flattenDeep(array) { + var length = array == null ? 0 : array.length; + return length ? baseFlatten(array, INFINITY) : []; + } - // Curve: A * X^2 + Y^2 = C^2 * (1 + D * X^2 * Y^2) - point.normalize(); + /** + * Recursively flatten `array` up to `depth` times. + * + * @static + * @memberOf _ + * @since 4.4.0 + * @category Array + * @param {Array} array The array to flatten. + * @param {number} [depth=1] The maximum recursion depth. + * @returns {Array} Returns the new flattened array. + * @example + * + * var array = [1, [2, [3, [4]], 5]]; + * + * _.flattenDepth(array, 1); + * // => [1, 2, [3, [4]], 5] + * + * _.flattenDepth(array, 2); + * // => [1, 2, 3, [4], 5] + */ + function flattenDepth(array, depth) { + var length = array == null ? 0 : array.length; + if (!length) { + return []; + } + depth = depth === undefined ? 1 : toInteger(depth); + return baseFlatten(array, depth); + } - var x2 = point.x.redSqr(); - var y2 = point.y.redSqr(); - var lhs = x2.redMul(this.a).redAdd(y2); - var rhs = this.c2.redMul(this.one.redAdd(this.d.redMul(x2).redMul(y2))); + /** + * The inverse of `_.toPairs`; this method returns an object composed + * from key-value `pairs`. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Array + * @param {Array} pairs The key-value pairs. + * @returns {Object} Returns the new object. + * @example + * + * _.fromPairs([['a', 1], ['b', 2]]); + * // => { 'a': 1, 'b': 2 } + */ + function fromPairs(pairs) { + var index = -1, + length = pairs == null ? 0 : pairs.length, + result = {}; - return lhs.cmp(rhs) === 0; -}; + while (++index < length) { + var pair = pairs[index]; + result[pair[0]] = pair[1]; + } + return result; + } -function Point(curve, x, y, z, t) { - Base.BasePoint.call(this, curve, 'projective'); - if (x === null && y === null && z === null) { - this.x = this.curve.zero; - this.y = this.curve.one; - this.z = this.curve.one; - this.t = this.curve.zero; - this.zOne = true; - } else { - this.x = new BN(x, 16); - this.y = new BN(y, 16); - this.z = z ? new BN(z, 16) : this.curve.one; - this.t = t && new BN(t, 16); - if (!this.x.red) - this.x = this.x.toRed(this.curve.red); - if (!this.y.red) - this.y = this.y.toRed(this.curve.red); - if (!this.z.red) - this.z = this.z.toRed(this.curve.red); - if (this.t && !this.t.red) - this.t = this.t.toRed(this.curve.red); - this.zOne = this.z === this.curve.one; + /** + * Gets the first element of `array`. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @alias first + * @category Array + * @param {Array} array The array to query. + * @returns {*} Returns the first element of `array`. + * @example + * + * _.head([1, 2, 3]); + * // => 1 + * + * _.head([]); + * // => undefined + */ + function head(array) { + return (array && array.length) ? array[0] : undefined; + } - // Use extended coordinates - if (this.curve.extended && !this.t) { - this.t = this.x.redMul(this.y); - if (!this.zOne) - this.t = this.t.redMul(this.z.redInvm()); + /** + * Gets the index at which the first occurrence of `value` is found in `array` + * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero) + * for equality comparisons. If `fromIndex` is negative, it's used as the + * offset from the end of `array`. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Array + * @param {Array} array The array to inspect. + * @param {*} value The value to search for. + * @param {number} [fromIndex=0] The index to search from. + * @returns {number} Returns the index of the matched value, else `-1`. + * @example + * + * _.indexOf([1, 2, 1, 2], 2); + * // => 1 + * + * // Search from the `fromIndex`. + * _.indexOf([1, 2, 1, 2], 2, 2); + * // => 3 + */ + function indexOf(array, value, fromIndex) { + var length = array == null ? 0 : array.length; + if (!length) { + return -1; + } + var index = fromIndex == null ? 0 : toInteger(fromIndex); + if (index < 0) { + index = nativeMax(length + index, 0); + } + return baseIndexOf(array, value, index); } - } -} -inherits(Point, Base.BasePoint); -EdwardsCurve.prototype.pointFromJSON = function pointFromJSON(obj) { - return Point.fromJSON(this, obj); -}; + /** + * Gets all but the last element of `array`. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Array + * @param {Array} array The array to query. + * @returns {Array} Returns the slice of `array`. + * @example + * + * _.initial([1, 2, 3]); + * // => [1, 2] + */ + function initial(array) { + var length = array == null ? 0 : array.length; + return length ? baseSlice(array, 0, -1) : []; + } -EdwardsCurve.prototype.point = function point(x, y, z, t) { - return new Point(this, x, y, z, t); -}; + /** + * Creates an array of unique values that are included in all given arrays + * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero) + * for equality comparisons. The order and references of result values are + * determined by the first array. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Array + * @param {...Array} [arrays] The arrays to inspect. + * @returns {Array} Returns the new array of intersecting values. + * @example + * + * _.intersection([2, 1], [2, 3]); + * // => [2] + */ + var intersection = baseRest(function(arrays) { + var mapped = arrayMap(arrays, castArrayLikeObject); + return (mapped.length && mapped[0] === arrays[0]) + ? baseIntersection(mapped) + : []; + }); -Point.fromJSON = function fromJSON(curve, obj) { - return new Point(curve, obj[0], obj[1], obj[2]); -}; + /** + * This method is like `_.intersection` except that it accepts `iteratee` + * which is invoked for each element of each `arrays` to generate the criterion + * by which they're compared. The order and references of result values are + * determined by the first array. The iteratee is invoked with one argument: + * (value). + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Array + * @param {...Array} [arrays] The arrays to inspect. + * @param {Function} [iteratee=_.identity] The iteratee invoked per element. + * @returns {Array} Returns the new array of intersecting values. + * @example + * + * _.intersectionBy([2.1, 1.2], [2.3, 3.4], Math.floor); + * // => [2.1] + * + * // The `_.property` iteratee shorthand. + * _.intersectionBy([{ 'x': 1 }], [{ 'x': 2 }, { 'x': 1 }], 'x'); + * // => [{ 'x': 1 }] + */ + var intersectionBy = baseRest(function(arrays) { + var iteratee = last(arrays), + mapped = arrayMap(arrays, castArrayLikeObject); -Point.prototype.inspect = function inspect() { - if (this.isInfinity()) - return ''; - return ''; -}; + if (iteratee === last(mapped)) { + iteratee = undefined; + } else { + mapped.pop(); + } + return (mapped.length && mapped[0] === arrays[0]) + ? baseIntersection(mapped, getIteratee(iteratee, 2)) + : []; + }); -Point.prototype.isInfinity = function isInfinity() { - // XXX This code assumes that zero is always zero in red - return this.x.cmpn(0) === 0 && - this.y.cmp(this.z) === 0; -}; + /** + * This method is like `_.intersection` except that it accepts `comparator` + * which is invoked to compare elements of `arrays`. The order and references + * of result values are determined by the first array. The comparator is + * invoked with two arguments: (arrVal, othVal). + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Array + * @param {...Array} [arrays] The arrays to inspect. + * @param {Function} [comparator] The comparator invoked per element. + * @returns {Array} Returns the new array of intersecting values. + * @example + * + * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }]; + * var others = [{ 'x': 1, 'y': 1 }, { 'x': 1, 'y': 2 }]; + * + * _.intersectionWith(objects, others, _.isEqual); + * // => [{ 'x': 1, 'y': 2 }] + */ + var intersectionWith = baseRest(function(arrays) { + var comparator = last(arrays), + mapped = arrayMap(arrays, castArrayLikeObject); -Point.prototype._extDbl = function _extDbl() { - // hyperelliptic.org/EFD/g1p/auto-twisted-extended-1.html - // #doubling-dbl-2008-hwcd - // 4M + 4S + comparator = typeof comparator == 'function' ? comparator : undefined; + if (comparator) { + mapped.pop(); + } + return (mapped.length && mapped[0] === arrays[0]) + ? baseIntersection(mapped, undefined, comparator) + : []; + }); - // A = X1^2 - var a = this.x.redSqr(); - // B = Y1^2 - var b = this.y.redSqr(); - // C = 2 * Z1^2 - var c = this.z.redSqr(); - c = c.redIAdd(c); - // D = a * A - var d = this.curve._mulA(a); - // E = (X1 + Y1)^2 - A - B - var e = this.x.redAdd(this.y).redSqr().redISub(a).redISub(b); - // G = D + B - var g = d.redAdd(b); - // F = G - C - var f = g.redSub(c); - // H = D - B - var h = d.redSub(b); - // X3 = E * F - var nx = e.redMul(f); - // Y3 = G * H - var ny = g.redMul(h); - // T3 = E * H - var nt = e.redMul(h); - // Z3 = F * G - var nz = f.redMul(g); - return this.curve.point(nx, ny, nz, nt); -}; + /** + * Converts all elements in `array` into a string separated by `separator`. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Array + * @param {Array} array The array to convert. + * @param {string} [separator=','] The element separator. + * @returns {string} Returns the joined string. + * @example + * + * _.join(['a', 'b', 'c'], '~'); + * // => 'a~b~c' + */ + function join(array, separator) { + return array == null ? '' : nativeJoin.call(array, separator); + } -Point.prototype._projDbl = function _projDbl() { - // hyperelliptic.org/EFD/g1p/auto-twisted-projective.html - // #doubling-dbl-2008-bbjlp - // #doubling-dbl-2007-bl - // and others - // Generally 3M + 4S or 2M + 4S + /** + * Gets the last element of `array`. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Array + * @param {Array} array The array to query. + * @returns {*} Returns the last element of `array`. + * @example + * + * _.last([1, 2, 3]); + * // => 3 + */ + function last(array) { + var length = array == null ? 0 : array.length; + return length ? array[length - 1] : undefined; + } - // B = (X1 + Y1)^2 - var b = this.x.redAdd(this.y).redSqr(); - // C = X1^2 - var c = this.x.redSqr(); - // D = Y1^2 - var d = this.y.redSqr(); + /** + * This method is like `_.indexOf` except that it iterates over elements of + * `array` from right to left. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Array + * @param {Array} array The array to inspect. + * @param {*} value The value to search for. + * @param {number} [fromIndex=array.length-1] The index to search from. + * @returns {number} Returns the index of the matched value, else `-1`. + * @example + * + * _.lastIndexOf([1, 2, 1, 2], 2); + * // => 3 + * + * // Search from the `fromIndex`. + * _.lastIndexOf([1, 2, 1, 2], 2, 2); + * // => 1 + */ + function lastIndexOf(array, value, fromIndex) { + var length = array == null ? 0 : array.length; + if (!length) { + return -1; + } + var index = length; + if (fromIndex !== undefined) { + index = toInteger(fromIndex); + index = index < 0 ? nativeMax(length + index, 0) : nativeMin(index, length - 1); + } + return value === value + ? strictLastIndexOf(array, value, index) + : baseFindIndex(array, baseIsNaN, index, true); + } - var nx; - var ny; - var nz; - if (this.curve.twisted) { - // E = a * C - var e = this.curve._mulA(c); - // F = E + D - var f = e.redAdd(d); - if (this.zOne) { - // X3 = (B - C - D) * (F - 2) - nx = b.redSub(c).redSub(d).redMul(f.redSub(this.curve.two)); - // Y3 = F * (E - D) - ny = f.redMul(e.redSub(d)); - // Z3 = F^2 - 2 * F - nz = f.redSqr().redSub(f).redSub(f); - } else { - // H = Z1^2 - var h = this.z.redSqr(); - // J = F - 2 * H - var j = f.redSub(h).redISub(h); - // X3 = (B-C-D)*J - nx = b.redSub(c).redISub(d).redMul(j); - // Y3 = F * (E - D) - ny = f.redMul(e.redSub(d)); - // Z3 = F * J - nz = f.redMul(j); + /** + * Gets the element at index `n` of `array`. If `n` is negative, the nth + * element from the end is returned. + * + * @static + * @memberOf _ + * @since 4.11.0 + * @category Array + * @param {Array} array The array to query. + * @param {number} [n=0] The index of the element to return. + * @returns {*} Returns the nth element of `array`. + * @example + * + * var array = ['a', 'b', 'c', 'd']; + * + * _.nth(array, 1); + * // => 'b' + * + * _.nth(array, -2); + * // => 'c'; + */ + function nth(array, n) { + return (array && array.length) ? baseNth(array, toInteger(n)) : undefined; } - } else { - // E = C + D - var e = c.redAdd(d); - // H = (c * Z1)^2 - var h = this.curve._mulC(this.c.redMul(this.z)).redSqr(); - // J = E - 2 * H - var j = e.redSub(h).redSub(h); - // X3 = c * (B - E) * J - nx = this.curve._mulC(b.redISub(e)).redMul(j); - // Y3 = c * E * (C - D) - ny = this.curve._mulC(e).redMul(c.redISub(d)); - // Z3 = E * J - nz = e.redMul(j); - } - return this.curve.point(nx, ny, nz); -}; -Point.prototype.dbl = function dbl() { - if (this.isInfinity()) - return this; + /** + * Removes all given values from `array` using + * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero) + * for equality comparisons. + * + * **Note:** Unlike `_.without`, this method mutates `array`. Use `_.remove` + * to remove elements from an array by predicate. + * + * @static + * @memberOf _ + * @since 2.0.0 + * @category Array + * @param {Array} array The array to modify. + * @param {...*} [values] The values to remove. + * @returns {Array} Returns `array`. + * @example + * + * var array = ['a', 'b', 'c', 'a', 'b', 'c']; + * + * _.pull(array, 'a', 'c'); + * console.log(array); + * // => ['b', 'b'] + */ + var pull = baseRest(pullAll); - // Double in extended coordinates - if (this.curve.extended) - return this._extDbl(); - else - return this._projDbl(); -}; + /** + * This method is like `_.pull` except that it accepts an array of values to remove. + * + * **Note:** Unlike `_.difference`, this method mutates `array`. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Array + * @param {Array} array The array to modify. + * @param {Array} values The values to remove. + * @returns {Array} Returns `array`. + * @example + * + * var array = ['a', 'b', 'c', 'a', 'b', 'c']; + * + * _.pullAll(array, ['a', 'c']); + * console.log(array); + * // => ['b', 'b'] + */ + function pullAll(array, values) { + return (array && array.length && values && values.length) + ? basePullAll(array, values) + : array; + } -Point.prototype._extAdd = function _extAdd(p) { - // hyperelliptic.org/EFD/g1p/auto-twisted-extended-1.html - // #addition-add-2008-hwcd-3 - // 8M + /** + * This method is like `_.pullAll` except that it accepts `iteratee` which is + * invoked for each element of `array` and `values` to generate the criterion + * by which they're compared. The iteratee is invoked with one argument: (value). + * + * **Note:** Unlike `_.differenceBy`, this method mutates `array`. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Array + * @param {Array} array The array to modify. + * @param {Array} values The values to remove. + * @param {Function} [iteratee=_.identity] The iteratee invoked per element. + * @returns {Array} Returns `array`. + * @example + * + * var array = [{ 'x': 1 }, { 'x': 2 }, { 'x': 3 }, { 'x': 1 }]; + * + * _.pullAllBy(array, [{ 'x': 1 }, { 'x': 3 }], 'x'); + * console.log(array); + * // => [{ 'x': 2 }] + */ + function pullAllBy(array, values, iteratee) { + return (array && array.length && values && values.length) + ? basePullAll(array, values, getIteratee(iteratee, 2)) + : array; + } - // A = (Y1 - X1) * (Y2 - X2) - var a = this.y.redSub(this.x).redMul(p.y.redSub(p.x)); - // B = (Y1 + X1) * (Y2 + X2) - var b = this.y.redAdd(this.x).redMul(p.y.redAdd(p.x)); - // C = T1 * k * T2 - var c = this.t.redMul(this.curve.dd).redMul(p.t); - // D = Z1 * 2 * Z2 - var d = this.z.redMul(p.z.redAdd(p.z)); - // E = B - A - var e = b.redSub(a); - // F = D - C - var f = d.redSub(c); - // G = D + C - var g = d.redAdd(c); - // H = B + A - var h = b.redAdd(a); - // X3 = E * F - var nx = e.redMul(f); - // Y3 = G * H - var ny = g.redMul(h); - // T3 = E * H - var nt = e.redMul(h); - // Z3 = F * G - var nz = f.redMul(g); - return this.curve.point(nx, ny, nz, nt); -}; + /** + * This method is like `_.pullAll` except that it accepts `comparator` which + * is invoked to compare elements of `array` to `values`. The comparator is + * invoked with two arguments: (arrVal, othVal). + * + * **Note:** Unlike `_.differenceWith`, this method mutates `array`. + * + * @static + * @memberOf _ + * @since 4.6.0 + * @category Array + * @param {Array} array The array to modify. + * @param {Array} values The values to remove. + * @param {Function} [comparator] The comparator invoked per element. + * @returns {Array} Returns `array`. + * @example + * + * var array = [{ 'x': 1, 'y': 2 }, { 'x': 3, 'y': 4 }, { 'x': 5, 'y': 6 }]; + * + * _.pullAllWith(array, [{ 'x': 3, 'y': 4 }], _.isEqual); + * console.log(array); + * // => [{ 'x': 1, 'y': 2 }, { 'x': 5, 'y': 6 }] + */ + function pullAllWith(array, values, comparator) { + return (array && array.length && values && values.length) + ? basePullAll(array, values, undefined, comparator) + : array; + } -Point.prototype._projAdd = function _projAdd(p) { - // hyperelliptic.org/EFD/g1p/auto-twisted-projective.html - // #addition-add-2008-bbjlp - // #addition-add-2007-bl - // 10M + 1S + /** + * Removes elements from `array` corresponding to `indexes` and returns an + * array of removed elements. + * + * **Note:** Unlike `_.at`, this method mutates `array`. + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category Array + * @param {Array} array The array to modify. + * @param {...(number|number[])} [indexes] The indexes of elements to remove. + * @returns {Array} Returns the new array of removed elements. + * @example + * + * var array = ['a', 'b', 'c', 'd']; + * var pulled = _.pullAt(array, [1, 3]); + * + * console.log(array); + * // => ['a', 'c'] + * + * console.log(pulled); + * // => ['b', 'd'] + */ + var pullAt = flatRest(function(array, indexes) { + var length = array == null ? 0 : array.length, + result = baseAt(array, indexes); - // A = Z1 * Z2 - var a = this.z.redMul(p.z); - // B = A^2 - var b = a.redSqr(); - // C = X1 * X2 - var c = this.x.redMul(p.x); - // D = Y1 * Y2 - var d = this.y.redMul(p.y); - // E = d * C * D - var e = this.curve.d.redMul(c).redMul(d); - // F = B - E - var f = b.redSub(e); - // G = B + E - var g = b.redAdd(e); - // X3 = A * F * ((X1 + Y1) * (X2 + Y2) - C - D) - var tmp = this.x.redAdd(this.y).redMul(p.x.redAdd(p.y)).redISub(c).redISub(d); - var nx = a.redMul(f).redMul(tmp); - var ny; - var nz; - if (this.curve.twisted) { - // Y3 = A * G * (D - a * C) - ny = a.redMul(g).redMul(d.redSub(this.curve._mulA(c))); - // Z3 = F * G - nz = f.redMul(g); - } else { - // Y3 = A * G * (D - C) - ny = a.redMul(g).redMul(d.redSub(c)); - // Z3 = c * F * G - nz = this.curve._mulC(f).redMul(g); - } - return this.curve.point(nx, ny, nz); -}; + basePullAt(array, arrayMap(indexes, function(index) { + return isIndex(index, length) ? +index : index; + }).sort(compareAscending)); -Point.prototype.add = function add(p) { - if (this.isInfinity()) - return p; - if (p.isInfinity()) - return this; + return result; + }); - if (this.curve.extended) - return this._extAdd(p); - else - return this._projAdd(p); -}; + /** + * Removes all elements from `array` that `predicate` returns truthy for + * and returns an array of the removed elements. The predicate is invoked + * with three arguments: (value, index, array). + * + * **Note:** Unlike `_.filter`, this method mutates `array`. Use `_.pull` + * to pull elements from an array by value. + * + * @static + * @memberOf _ + * @since 2.0.0 + * @category Array + * @param {Array} array The array to modify. + * @param {Function} [predicate=_.identity] The function invoked per iteration. + * @returns {Array} Returns the new array of removed elements. + * @example + * + * var array = [1, 2, 3, 4]; + * var evens = _.remove(array, function(n) { + * return n % 2 == 0; + * }); + * + * console.log(array); + * // => [1, 3] + * + * console.log(evens); + * // => [2, 4] + */ + function remove(array, predicate) { + var result = []; + if (!(array && array.length)) { + return result; + } + var index = -1, + indexes = [], + length = array.length; -Point.prototype.mul = function mul(k) { - if (this._hasDoubles(k)) - return this.curve._fixedNafMul(this, k); - else - return this.curve._wnafMul(this, k); -}; + predicate = getIteratee(predicate, 3); + while (++index < length) { + var value = array[index]; + if (predicate(value, index, array)) { + result.push(value); + indexes.push(index); + } + } + basePullAt(array, indexes); + return result; + } -Point.prototype.mulAdd = function mulAdd(k1, p, k2) { - return this.curve._wnafMulAdd(1, [ this, p ], [ k1, k2 ], 2, false); -}; + /** + * Reverses `array` so that the first element becomes the last, the second + * element becomes the second to last, and so on. + * + * **Note:** This method mutates `array` and is based on + * [`Array#reverse`](https://mdn.io/Array/reverse). + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Array + * @param {Array} array The array to modify. + * @returns {Array} Returns `array`. + * @example + * + * var array = [1, 2, 3]; + * + * _.reverse(array); + * // => [3, 2, 1] + * + * console.log(array); + * // => [3, 2, 1] + */ + function reverse(array) { + return array == null ? array : nativeReverse.call(array); + } -Point.prototype.jmulAdd = function jmulAdd(k1, p, k2) { - return this.curve._wnafMulAdd(1, [ this, p ], [ k1, k2 ], 2, true); -}; + /** + * Creates a slice of `array` from `start` up to, but not including, `end`. + * + * **Note:** This method is used instead of + * [`Array#slice`](https://mdn.io/Array/slice) to ensure dense arrays are + * returned. + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category Array + * @param {Array} array The array to slice. + * @param {number} [start=0] The start position. + * @param {number} [end=array.length] The end position. + * @returns {Array} Returns the slice of `array`. + */ + function slice(array, start, end) { + var length = array == null ? 0 : array.length; + if (!length) { + return []; + } + if (end && typeof end != 'number' && isIterateeCall(array, start, end)) { + start = 0; + end = length; + } + else { + start = start == null ? 0 : toInteger(start); + end = end === undefined ? length : toInteger(end); + } + return baseSlice(array, start, end); + } -Point.prototype.normalize = function normalize() { - if (this.zOne) - return this; + /** + * Uses a binary search to determine the lowest index at which `value` + * should be inserted into `array` in order to maintain its sort order. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Array + * @param {Array} array The sorted array to inspect. + * @param {*} value The value to evaluate. + * @returns {number} Returns the index at which `value` should be inserted + * into `array`. + * @example + * + * _.sortedIndex([30, 50], 40); + * // => 1 + */ + function sortedIndex(array, value) { + return baseSortedIndex(array, value); + } - // Normalize coordinates - var zi = this.z.redInvm(); - this.x = this.x.redMul(zi); - this.y = this.y.redMul(zi); - if (this.t) - this.t = this.t.redMul(zi); - this.z = this.curve.one; - this.zOne = true; - return this; -}; + /** + * This method is like `_.sortedIndex` except that it accepts `iteratee` + * which is invoked for `value` and each element of `array` to compute their + * sort ranking. The iteratee is invoked with one argument: (value). + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Array + * @param {Array} array The sorted array to inspect. + * @param {*} value The value to evaluate. + * @param {Function} [iteratee=_.identity] The iteratee invoked per element. + * @returns {number} Returns the index at which `value` should be inserted + * into `array`. + * @example + * + * var objects = [{ 'x': 4 }, { 'x': 5 }]; + * + * _.sortedIndexBy(objects, { 'x': 4 }, function(o) { return o.x; }); + * // => 0 + * + * // The `_.property` iteratee shorthand. + * _.sortedIndexBy(objects, { 'x': 4 }, 'x'); + * // => 0 + */ + function sortedIndexBy(array, value, iteratee) { + return baseSortedIndexBy(array, value, getIteratee(iteratee, 2)); + } -Point.prototype.neg = function neg() { - return this.curve.point(this.x.redNeg(), - this.y, - this.z, - this.t && this.t.redNeg()); -}; + /** + * This method is like `_.indexOf` except that it performs a binary + * search on a sorted `array`. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Array + * @param {Array} array The array to inspect. + * @param {*} value The value to search for. + * @returns {number} Returns the index of the matched value, else `-1`. + * @example + * + * _.sortedIndexOf([4, 5, 5, 5, 6], 5); + * // => 1 + */ + function sortedIndexOf(array, value) { + var length = array == null ? 0 : array.length; + if (length) { + var index = baseSortedIndex(array, value); + if (index < length && eq(array[index], value)) { + return index; + } + } + return -1; + } -Point.prototype.getX = function getX() { - this.normalize(); - return this.x.fromRed(); -}; + /** + * This method is like `_.sortedIndex` except that it returns the highest + * index at which `value` should be inserted into `array` in order to + * maintain its sort order. + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category Array + * @param {Array} array The sorted array to inspect. + * @param {*} value The value to evaluate. + * @returns {number} Returns the index at which `value` should be inserted + * into `array`. + * @example + * + * _.sortedLastIndex([4, 5, 5, 5, 6], 5); + * // => 4 + */ + function sortedLastIndex(array, value) { + return baseSortedIndex(array, value, true); + } + + /** + * This method is like `_.sortedLastIndex` except that it accepts `iteratee` + * which is invoked for `value` and each element of `array` to compute their + * sort ranking. The iteratee is invoked with one argument: (value). + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Array + * @param {Array} array The sorted array to inspect. + * @param {*} value The value to evaluate. + * @param {Function} [iteratee=_.identity] The iteratee invoked per element. + * @returns {number} Returns the index at which `value` should be inserted + * into `array`. + * @example + * + * var objects = [{ 'x': 4 }, { 'x': 5 }]; + * + * _.sortedLastIndexBy(objects, { 'x': 4 }, function(o) { return o.x; }); + * // => 1 + * + * // The `_.property` iteratee shorthand. + * _.sortedLastIndexBy(objects, { 'x': 4 }, 'x'); + * // => 1 + */ + function sortedLastIndexBy(array, value, iteratee) { + return baseSortedIndexBy(array, value, getIteratee(iteratee, 2), true); + } -Point.prototype.getY = function getY() { - this.normalize(); - return this.y.fromRed(); -}; + /** + * This method is like `_.lastIndexOf` except that it performs a binary + * search on a sorted `array`. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Array + * @param {Array} array The array to inspect. + * @param {*} value The value to search for. + * @returns {number} Returns the index of the matched value, else `-1`. + * @example + * + * _.sortedLastIndexOf([4, 5, 5, 5, 6], 5); + * // => 3 + */ + function sortedLastIndexOf(array, value) { + var length = array == null ? 0 : array.length; + if (length) { + var index = baseSortedIndex(array, value, true) - 1; + if (eq(array[index], value)) { + return index; + } + } + return -1; + } -Point.prototype.eq = function eq(other) { - return this === other || - this.getX().cmp(other.getX()) === 0 && - this.getY().cmp(other.getY()) === 0; -}; + /** + * This method is like `_.uniq` except that it's designed and optimized + * for sorted arrays. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Array + * @param {Array} array The array to inspect. + * @returns {Array} Returns the new duplicate free array. + * @example + * + * _.sortedUniq([1, 1, 2]); + * // => [1, 2] + */ + function sortedUniq(array) { + return (array && array.length) + ? baseSortedUniq(array) + : []; + } -Point.prototype.eqXToP = function eqXToP(x) { - var rx = x.toRed(this.curve.red).redMul(this.z); - if (this.x.cmp(rx) === 0) - return true; + /** + * This method is like `_.uniqBy` except that it's designed and optimized + * for sorted arrays. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Array + * @param {Array} array The array to inspect. + * @param {Function} [iteratee] The iteratee invoked per element. + * @returns {Array} Returns the new duplicate free array. + * @example + * + * _.sortedUniqBy([1.1, 1.2, 2.3, 2.4], Math.floor); + * // => [1.1, 2.3] + */ + function sortedUniqBy(array, iteratee) { + return (array && array.length) + ? baseSortedUniq(array, getIteratee(iteratee, 2)) + : []; + } - var xc = x.clone(); - var t = this.curve.redN.redMul(this.z); - for (;;) { - xc.iadd(this.curve.n); - if (xc.cmp(this.curve.p) >= 0) - return false; + /** + * Gets all but the first element of `array`. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Array + * @param {Array} array The array to query. + * @returns {Array} Returns the slice of `array`. + * @example + * + * _.tail([1, 2, 3]); + * // => [2, 3] + */ + function tail(array) { + var length = array == null ? 0 : array.length; + return length ? baseSlice(array, 1, length) : []; + } - rx.redIAdd(t); - if (this.x.cmp(rx) === 0) - return true; - } - return false; -}; + /** + * Creates a slice of `array` with `n` elements taken from the beginning. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Array + * @param {Array} array The array to query. + * @param {number} [n=1] The number of elements to take. + * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`. + * @returns {Array} Returns the slice of `array`. + * @example + * + * _.take([1, 2, 3]); + * // => [1] + * + * _.take([1, 2, 3], 2); + * // => [1, 2] + * + * _.take([1, 2, 3], 5); + * // => [1, 2, 3] + * + * _.take([1, 2, 3], 0); + * // => [] + */ + function take(array, n, guard) { + if (!(array && array.length)) { + return []; + } + n = (guard || n === undefined) ? 1 : toInteger(n); + return baseSlice(array, 0, n < 0 ? 0 : n); + } -// Compatibility with BaseCurve -Point.prototype.toP = Point.prototype.normalize; -Point.prototype.mixedAdd = Point.prototype.add; + /** + * Creates a slice of `array` with `n` elements taken from the end. + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category Array + * @param {Array} array The array to query. + * @param {number} [n=1] The number of elements to take. + * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`. + * @returns {Array} Returns the slice of `array`. + * @example + * + * _.takeRight([1, 2, 3]); + * // => [3] + * + * _.takeRight([1, 2, 3], 2); + * // => [2, 3] + * + * _.takeRight([1, 2, 3], 5); + * // => [1, 2, 3] + * + * _.takeRight([1, 2, 3], 0); + * // => [] + */ + function takeRight(array, n, guard) { + var length = array == null ? 0 : array.length; + if (!length) { + return []; + } + n = (guard || n === undefined) ? 1 : toInteger(n); + n = length - n; + return baseSlice(array, n < 0 ? 0 : n, length); + } -},{"../../elliptic":214,"../curve":217,"bn.js":210,"inherits":244}],217:[function(require,module,exports){ -arguments[4][74][0].apply(exports,arguments) -},{"./base":215,"./edwards":216,"./mont":218,"./short":219,"dup":74}],218:[function(require,module,exports){ -arguments[4][75][0].apply(exports,arguments) -},{"../../elliptic":214,"../curve":217,"bn.js":210,"dup":75,"inherits":244}],219:[function(require,module,exports){ -'use strict'; + /** + * Creates a slice of `array` with elements taken from the end. Elements are + * taken until `predicate` returns falsey. The predicate is invoked with + * three arguments: (value, index, array). + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category Array + * @param {Array} array The array to query. + * @param {Function} [predicate=_.identity] The function invoked per iteration. + * @returns {Array} Returns the slice of `array`. + * @example + * + * var users = [ + * { 'user': 'barney', 'active': true }, + * { 'user': 'fred', 'active': false }, + * { 'user': 'pebbles', 'active': false } + * ]; + * + * _.takeRightWhile(users, function(o) { return !o.active; }); + * // => objects for ['fred', 'pebbles'] + * + * // The `_.matches` iteratee shorthand. + * _.takeRightWhile(users, { 'user': 'pebbles', 'active': false }); + * // => objects for ['pebbles'] + * + * // The `_.matchesProperty` iteratee shorthand. + * _.takeRightWhile(users, ['active', false]); + * // => objects for ['fred', 'pebbles'] + * + * // The `_.property` iteratee shorthand. + * _.takeRightWhile(users, 'active'); + * // => [] + */ + function takeRightWhile(array, predicate) { + return (array && array.length) + ? baseWhile(array, getIteratee(predicate, 3), false, true) + : []; + } -var curve = require('../curve'); -var elliptic = require('../../elliptic'); -var BN = require('bn.js'); -var inherits = require('inherits'); -var Base = curve.base; + /** + * Creates a slice of `array` with elements taken from the beginning. Elements + * are taken until `predicate` returns falsey. The predicate is invoked with + * three arguments: (value, index, array). + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category Array + * @param {Array} array The array to query. + * @param {Function} [predicate=_.identity] The function invoked per iteration. + * @returns {Array} Returns the slice of `array`. + * @example + * + * var users = [ + * { 'user': 'barney', 'active': false }, + * { 'user': 'fred', 'active': false }, + * { 'user': 'pebbles', 'active': true } + * ]; + * + * _.takeWhile(users, function(o) { return !o.active; }); + * // => objects for ['barney', 'fred'] + * + * // The `_.matches` iteratee shorthand. + * _.takeWhile(users, { 'user': 'barney', 'active': false }); + * // => objects for ['barney'] + * + * // The `_.matchesProperty` iteratee shorthand. + * _.takeWhile(users, ['active', false]); + * // => objects for ['barney', 'fred'] + * + * // The `_.property` iteratee shorthand. + * _.takeWhile(users, 'active'); + * // => [] + */ + function takeWhile(array, predicate) { + return (array && array.length) + ? baseWhile(array, getIteratee(predicate, 3)) + : []; + } -var assert = elliptic.utils.assert; + /** + * Creates an array of unique values, in order, from all given arrays using + * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero) + * for equality comparisons. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Array + * @param {...Array} [arrays] The arrays to inspect. + * @returns {Array} Returns the new array of combined values. + * @example + * + * _.union([2], [1, 2]); + * // => [2, 1] + */ + var union = baseRest(function(arrays) { + return baseUniq(baseFlatten(arrays, 1, isArrayLikeObject, true)); + }); -function ShortCurve(conf) { - Base.call(this, 'short', conf); + /** + * This method is like `_.union` except that it accepts `iteratee` which is + * invoked for each element of each `arrays` to generate the criterion by + * which uniqueness is computed. Result values are chosen from the first + * array in which the value occurs. The iteratee is invoked with one argument: + * (value). + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Array + * @param {...Array} [arrays] The arrays to inspect. + * @param {Function} [iteratee=_.identity] The iteratee invoked per element. + * @returns {Array} Returns the new array of combined values. + * @example + * + * _.unionBy([2.1], [1.2, 2.3], Math.floor); + * // => [2.1, 1.2] + * + * // The `_.property` iteratee shorthand. + * _.unionBy([{ 'x': 1 }], [{ 'x': 2 }, { 'x': 1 }], 'x'); + * // => [{ 'x': 1 }, { 'x': 2 }] + */ + var unionBy = baseRest(function(arrays) { + var iteratee = last(arrays); + if (isArrayLikeObject(iteratee)) { + iteratee = undefined; + } + return baseUniq(baseFlatten(arrays, 1, isArrayLikeObject, true), getIteratee(iteratee, 2)); + }); - this.a = new BN(conf.a, 16).toRed(this.red); - this.b = new BN(conf.b, 16).toRed(this.red); - this.tinv = this.two.redInvm(); + /** + * This method is like `_.union` except that it accepts `comparator` which + * is invoked to compare elements of `arrays`. Result values are chosen from + * the first array in which the value occurs. The comparator is invoked + * with two arguments: (arrVal, othVal). + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Array + * @param {...Array} [arrays] The arrays to inspect. + * @param {Function} [comparator] The comparator invoked per element. + * @returns {Array} Returns the new array of combined values. + * @example + * + * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }]; + * var others = [{ 'x': 1, 'y': 1 }, { 'x': 1, 'y': 2 }]; + * + * _.unionWith(objects, others, _.isEqual); + * // => [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }, { 'x': 1, 'y': 1 }] + */ + var unionWith = baseRest(function(arrays) { + var comparator = last(arrays); + comparator = typeof comparator == 'function' ? comparator : undefined; + return baseUniq(baseFlatten(arrays, 1, isArrayLikeObject, true), undefined, comparator); + }); - this.zeroA = this.a.fromRed().cmpn(0) === 0; - this.threeA = this.a.fromRed().sub(this.p).cmpn(-3) === 0; + /** + * Creates a duplicate-free version of an array, using + * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero) + * for equality comparisons, in which only the first occurrence of each element + * is kept. The order of result values is determined by the order they occur + * in the array. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Array + * @param {Array} array The array to inspect. + * @returns {Array} Returns the new duplicate free array. + * @example + * + * _.uniq([2, 1, 2]); + * // => [2, 1] + */ + function uniq(array) { + return (array && array.length) ? baseUniq(array) : []; + } - // If the curve is endomorphic, precalculate beta and lambda - this.endo = this._getEndomorphism(conf); - this._endoWnafT1 = new Array(4); - this._endoWnafT2 = new Array(4); -} -inherits(ShortCurve, Base); -module.exports = ShortCurve; + /** + * This method is like `_.uniq` except that it accepts `iteratee` which is + * invoked for each element in `array` to generate the criterion by which + * uniqueness is computed. The order of result values is determined by the + * order they occur in the array. The iteratee is invoked with one argument: + * (value). + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Array + * @param {Array} array The array to inspect. + * @param {Function} [iteratee=_.identity] The iteratee invoked per element. + * @returns {Array} Returns the new duplicate free array. + * @example + * + * _.uniqBy([2.1, 1.2, 2.3], Math.floor); + * // => [2.1, 1.2] + * + * // The `_.property` iteratee shorthand. + * _.uniqBy([{ 'x': 1 }, { 'x': 2 }, { 'x': 1 }], 'x'); + * // => [{ 'x': 1 }, { 'x': 2 }] + */ + function uniqBy(array, iteratee) { + return (array && array.length) ? baseUniq(array, getIteratee(iteratee, 2)) : []; + } -ShortCurve.prototype._getEndomorphism = function _getEndomorphism(conf) { - // No efficient endomorphism - if (!this.zeroA || !this.g || !this.n || this.p.modn(3) !== 1) - return; + /** + * This method is like `_.uniq` except that it accepts `comparator` which + * is invoked to compare elements of `array`. The order of result values is + * determined by the order they occur in the array.The comparator is invoked + * with two arguments: (arrVal, othVal). + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Array + * @param {Array} array The array to inspect. + * @param {Function} [comparator] The comparator invoked per element. + * @returns {Array} Returns the new duplicate free array. + * @example + * + * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }, { 'x': 1, 'y': 2 }]; + * + * _.uniqWith(objects, _.isEqual); + * // => [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }] + */ + function uniqWith(array, comparator) { + comparator = typeof comparator == 'function' ? comparator : undefined; + return (array && array.length) ? baseUniq(array, undefined, comparator) : []; + } - // Compute beta and lambda, that lambda * P = (beta * Px; Py) - var beta; - var lambda; - if (conf.beta) { - beta = new BN(conf.beta, 16).toRed(this.red); - } else { - var betas = this._getEndoRoots(this.p); - // Choose the smallest beta - beta = betas[0].cmp(betas[1]) < 0 ? betas[0] : betas[1]; - beta = beta.toRed(this.red); - } - if (conf.lambda) { - lambda = new BN(conf.lambda, 16); - } else { - // Choose the lambda that is matching selected beta - var lambdas = this._getEndoRoots(this.n); - if (this.g.mul(lambdas[0]).x.cmp(this.g.x.redMul(beta)) === 0) { - lambda = lambdas[0]; - } else { - lambda = lambdas[1]; - assert(this.g.mul(lambda).x.cmp(this.g.x.redMul(beta)) === 0); + /** + * This method is like `_.zip` except that it accepts an array of grouped + * elements and creates an array regrouping the elements to their pre-zip + * configuration. + * + * @static + * @memberOf _ + * @since 1.2.0 + * @category Array + * @param {Array} array The array of grouped elements to process. + * @returns {Array} Returns the new array of regrouped elements. + * @example + * + * var zipped = _.zip(['a', 'b'], [1, 2], [true, false]); + * // => [['a', 1, true], ['b', 2, false]] + * + * _.unzip(zipped); + * // => [['a', 'b'], [1, 2], [true, false]] + */ + function unzip(array) { + if (!(array && array.length)) { + return []; + } + var length = 0; + array = arrayFilter(array, function(group) { + if (isArrayLikeObject(group)) { + length = nativeMax(group.length, length); + return true; + } + }); + return baseTimes(length, function(index) { + return arrayMap(array, baseProperty(index)); + }); + } + + /** + * This method is like `_.unzip` except that it accepts `iteratee` to specify + * how regrouped values should be combined. The iteratee is invoked with the + * elements of each group: (...group). + * + * @static + * @memberOf _ + * @since 3.8.0 + * @category Array + * @param {Array} array The array of grouped elements to process. + * @param {Function} [iteratee=_.identity] The function to combine + * regrouped values. + * @returns {Array} Returns the new array of regrouped elements. + * @example + * + * var zipped = _.zip([1, 2], [10, 20], [100, 200]); + * // => [[1, 10, 100], [2, 20, 200]] + * + * _.unzipWith(zipped, _.add); + * // => [3, 30, 300] + */ + function unzipWith(array, iteratee) { + if (!(array && array.length)) { + return []; + } + var result = unzip(array); + if (iteratee == null) { + return result; + } + return arrayMap(result, function(group) { + return apply(iteratee, undefined, group); + }); } - } - // Get basis vectors, used for balanced length-two representation - var basis; - if (conf.basis) { - basis = conf.basis.map(function(vec) { - return { - a: new BN(vec.a, 16), - b: new BN(vec.b, 16) - }; + /** + * Creates an array excluding all given values using + * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero) + * for equality comparisons. + * + * **Note:** Unlike `_.pull`, this method returns a new array. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Array + * @param {Array} array The array to inspect. + * @param {...*} [values] The values to exclude. + * @returns {Array} Returns the new array of filtered values. + * @see _.difference, _.xor + * @example + * + * _.without([2, 1, 2, 3], 1, 2); + * // => [3] + */ + var without = baseRest(function(array, values) { + return isArrayLikeObject(array) + ? baseDifference(array, values) + : []; }); - } else { - basis = this._getEndoBasis(lambda); - } - return { - beta: beta, - lambda: lambda, - basis: basis - }; -}; + /** + * Creates an array of unique values that is the + * [symmetric difference](https://en.wikipedia.org/wiki/Symmetric_difference) + * of the given arrays. The order of result values is determined by the order + * they occur in the arrays. + * + * @static + * @memberOf _ + * @since 2.4.0 + * @category Array + * @param {...Array} [arrays] The arrays to inspect. + * @returns {Array} Returns the new array of filtered values. + * @see _.difference, _.without + * @example + * + * _.xor([2, 1], [2, 3]); + * // => [1, 3] + */ + var xor = baseRest(function(arrays) { + return baseXor(arrayFilter(arrays, isArrayLikeObject)); + }); -ShortCurve.prototype._getEndoRoots = function _getEndoRoots(num) { - // Find roots of for x^2 + x + 1 in F - // Root = (-1 +- Sqrt(-3)) / 2 - // - var red = num === this.p ? this.red : BN.mont(num); - var tinv = new BN(2).toRed(red).redInvm(); - var ntinv = tinv.redNeg(); + /** + * This method is like `_.xor` except that it accepts `iteratee` which is + * invoked for each element of each `arrays` to generate the criterion by + * which by which they're compared. The order of result values is determined + * by the order they occur in the arrays. The iteratee is invoked with one + * argument: (value). + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Array + * @param {...Array} [arrays] The arrays to inspect. + * @param {Function} [iteratee=_.identity] The iteratee invoked per element. + * @returns {Array} Returns the new array of filtered values. + * @example + * + * _.xorBy([2.1, 1.2], [2.3, 3.4], Math.floor); + * // => [1.2, 3.4] + * + * // The `_.property` iteratee shorthand. + * _.xorBy([{ 'x': 1 }], [{ 'x': 2 }, { 'x': 1 }], 'x'); + * // => [{ 'x': 2 }] + */ + var xorBy = baseRest(function(arrays) { + var iteratee = last(arrays); + if (isArrayLikeObject(iteratee)) { + iteratee = undefined; + } + return baseXor(arrayFilter(arrays, isArrayLikeObject), getIteratee(iteratee, 2)); + }); - var s = new BN(3).toRed(red).redNeg().redSqrt().redMul(tinv); + /** + * This method is like `_.xor` except that it accepts `comparator` which is + * invoked to compare elements of `arrays`. The order of result values is + * determined by the order they occur in the arrays. The comparator is invoked + * with two arguments: (arrVal, othVal). + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Array + * @param {...Array} [arrays] The arrays to inspect. + * @param {Function} [comparator] The comparator invoked per element. + * @returns {Array} Returns the new array of filtered values. + * @example + * + * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }]; + * var others = [{ 'x': 1, 'y': 1 }, { 'x': 1, 'y': 2 }]; + * + * _.xorWith(objects, others, _.isEqual); + * // => [{ 'x': 2, 'y': 1 }, { 'x': 1, 'y': 1 }] + */ + var xorWith = baseRest(function(arrays) { + var comparator = last(arrays); + comparator = typeof comparator == 'function' ? comparator : undefined; + return baseXor(arrayFilter(arrays, isArrayLikeObject), undefined, comparator); + }); - var l1 = ntinv.redAdd(s).fromRed(); - var l2 = ntinv.redSub(s).fromRed(); - return [ l1, l2 ]; -}; + /** + * Creates an array of grouped elements, the first of which contains the + * first elements of the given arrays, the second of which contains the + * second elements of the given arrays, and so on. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Array + * @param {...Array} [arrays] The arrays to process. + * @returns {Array} Returns the new array of grouped elements. + * @example + * + * _.zip(['a', 'b'], [1, 2], [true, false]); + * // => [['a', 1, true], ['b', 2, false]] + */ + var zip = baseRest(unzip); -ShortCurve.prototype._getEndoBasis = function _getEndoBasis(lambda) { - // aprxSqrt >= sqrt(this.n) - var aprxSqrt = this.n.ushrn(Math.floor(this.n.bitLength() / 2)); + /** + * This method is like `_.fromPairs` except that it accepts two arrays, + * one of property identifiers and one of corresponding values. + * + * @static + * @memberOf _ + * @since 0.4.0 + * @category Array + * @param {Array} [props=[]] The property identifiers. + * @param {Array} [values=[]] The property values. + * @returns {Object} Returns the new object. + * @example + * + * _.zipObject(['a', 'b'], [1, 2]); + * // => { 'a': 1, 'b': 2 } + */ + function zipObject(props, values) { + return baseZipObject(props || [], values || [], assignValue); + } - // 3.74 - // Run EGCD, until r(L + 1) < aprxSqrt - var u = lambda; - var v = this.n.clone(); - var x1 = new BN(1); - var y1 = new BN(0); - var x2 = new BN(0); - var y2 = new BN(1); + /** + * This method is like `_.zipObject` except that it supports property paths. + * + * @static + * @memberOf _ + * @since 4.1.0 + * @category Array + * @param {Array} [props=[]] The property identifiers. + * @param {Array} [values=[]] The property values. + * @returns {Object} Returns the new object. + * @example + * + * _.zipObjectDeep(['a.b[0].c', 'a.b[1].d'], [1, 2]); + * // => { 'a': { 'b': [{ 'c': 1 }, { 'd': 2 }] } } + */ + function zipObjectDeep(props, values) { + return baseZipObject(props || [], values || [], baseSet); + } - // NOTE: all vectors are roots of: a + b * lambda = 0 (mod n) - var a0; - var b0; - // First vector - var a1; - var b1; - // Second vector - var a2; - var b2; + /** + * This method is like `_.zip` except that it accepts `iteratee` to specify + * how grouped values should be combined. The iteratee is invoked with the + * elements of each group: (...group). + * + * @static + * @memberOf _ + * @since 3.8.0 + * @category Array + * @param {...Array} [arrays] The arrays to process. + * @param {Function} [iteratee=_.identity] The function to combine + * grouped values. + * @returns {Array} Returns the new array of grouped elements. + * @example + * + * _.zipWith([1, 2], [10, 20], [100, 200], function(a, b, c) { + * return a + b + c; + * }); + * // => [111, 222] + */ + var zipWith = baseRest(function(arrays) { + var length = arrays.length, + iteratee = length > 1 ? arrays[length - 1] : undefined; - var prevR; - var i = 0; - var r; - var x; - while (u.cmpn(0) !== 0) { - var q = v.div(u); - r = v.sub(q.mul(u)); - x = x2.sub(q.mul(x1)); - var y = y2.sub(q.mul(y1)); + iteratee = typeof iteratee == 'function' ? (arrays.pop(), iteratee) : undefined; + return unzipWith(arrays, iteratee); + }); - if (!a1 && r.cmp(aprxSqrt) < 0) { - a0 = prevR.neg(); - b0 = x1; - a1 = r.neg(); - b1 = x; - } else if (a1 && ++i === 2) { - break; - } - prevR = r; + /*------------------------------------------------------------------------*/ - v = u; - u = r; - x2 = x1; - x1 = x; - y2 = y1; - y1 = y; - } - a2 = r.neg(); - b2 = x; + /** + * Creates a `lodash` wrapper instance that wraps `value` with explicit method + * chain sequences enabled. The result of such sequences must be unwrapped + * with `_#value`. + * + * @static + * @memberOf _ + * @since 1.3.0 + * @category Seq + * @param {*} value The value to wrap. + * @returns {Object} Returns the new `lodash` wrapper instance. + * @example + * + * var users = [ + * { 'user': 'barney', 'age': 36 }, + * { 'user': 'fred', 'age': 40 }, + * { 'user': 'pebbles', 'age': 1 } + * ]; + * + * var youngest = _ + * .chain(users) + * .sortBy('age') + * .map(function(o) { + * return o.user + ' is ' + o.age; + * }) + * .head() + * .value(); + * // => 'pebbles is 1' + */ + function chain(value) { + var result = lodash(value); + result.__chain__ = true; + return result; + } - var len1 = a1.sqr().add(b1.sqr()); - var len2 = a2.sqr().add(b2.sqr()); - if (len2.cmp(len1) >= 0) { - a2 = a0; - b2 = b0; - } + /** + * This method invokes `interceptor` and returns `value`. The interceptor + * is invoked with one argument; (value). The purpose of this method is to + * "tap into" a method chain sequence in order to modify intermediate results. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Seq + * @param {*} value The value to provide to `interceptor`. + * @param {Function} interceptor The function to invoke. + * @returns {*} Returns `value`. + * @example + * + * _([1, 2, 3]) + * .tap(function(array) { + * // Mutate input array. + * array.pop(); + * }) + * .reverse() + * .value(); + * // => [2, 1] + */ + function tap(value, interceptor) { + interceptor(value); + return value; + } - // Normalize signs - if (a1.negative) { - a1 = a1.neg(); - b1 = b1.neg(); - } - if (a2.negative) { - a2 = a2.neg(); - b2 = b2.neg(); - } + /** + * This method is like `_.tap` except that it returns the result of `interceptor`. + * The purpose of this method is to "pass thru" values replacing intermediate + * results in a method chain sequence. + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category Seq + * @param {*} value The value to provide to `interceptor`. + * @param {Function} interceptor The function to invoke. + * @returns {*} Returns the result of `interceptor`. + * @example + * + * _(' abc ') + * .chain() + * .trim() + * .thru(function(value) { + * return [value]; + * }) + * .value(); + * // => ['abc'] + */ + function thru(value, interceptor) { + return interceptor(value); + } - return [ - { a: a1, b: b1 }, - { a: a2, b: b2 } - ]; -}; + /** + * This method is the wrapper version of `_.at`. + * + * @name at + * @memberOf _ + * @since 1.0.0 + * @category Seq + * @param {...(string|string[])} [paths] The property paths to pick. + * @returns {Object} Returns the new `lodash` wrapper instance. + * @example + * + * var object = { 'a': [{ 'b': { 'c': 3 } }, 4] }; + * + * _(object).at(['a[0].b.c', 'a[1]']).value(); + * // => [3, 4] + */ + var wrapperAt = flatRest(function(paths) { + var length = paths.length, + start = length ? paths[0] : 0, + value = this.__wrapped__, + interceptor = function(object) { return baseAt(object, paths); }; -ShortCurve.prototype._endoSplit = function _endoSplit(k) { - var basis = this.endo.basis; - var v1 = basis[0]; - var v2 = basis[1]; + if (length > 1 || this.__actions__.length || + !(value instanceof LazyWrapper) || !isIndex(start)) { + return this.thru(interceptor); + } + value = value.slice(start, +start + (length ? 1 : 0)); + value.__actions__.push({ + 'func': thru, + 'args': [interceptor], + 'thisArg': undefined + }); + return new LodashWrapper(value, this.__chain__).thru(function(array) { + if (length && !array.length) { + array.push(undefined); + } + return array; + }); + }); - var c1 = v2.b.mul(k).divRound(this.n); - var c2 = v1.b.neg().mul(k).divRound(this.n); + /** + * Creates a `lodash` wrapper instance with explicit method chain sequences enabled. + * + * @name chain + * @memberOf _ + * @since 0.1.0 + * @category Seq + * @returns {Object} Returns the new `lodash` wrapper instance. + * @example + * + * var users = [ + * { 'user': 'barney', 'age': 36 }, + * { 'user': 'fred', 'age': 40 } + * ]; + * + * // A sequence without explicit chaining. + * _(users).head(); + * // => { 'user': 'barney', 'age': 36 } + * + * // A sequence with explicit chaining. + * _(users) + * .chain() + * .head() + * .pick('user') + * .value(); + * // => { 'user': 'barney' } + */ + function wrapperChain() { + return chain(this); + } - var p1 = c1.mul(v1.a); - var p2 = c2.mul(v2.a); - var q1 = c1.mul(v1.b); - var q2 = c2.mul(v2.b); + /** + * Executes the chain sequence and returns the wrapped result. + * + * @name commit + * @memberOf _ + * @since 3.2.0 + * @category Seq + * @returns {Object} Returns the new `lodash` wrapper instance. + * @example + * + * var array = [1, 2]; + * var wrapped = _(array).push(3); + * + * console.log(array); + * // => [1, 2] + * + * wrapped = wrapped.commit(); + * console.log(array); + * // => [1, 2, 3] + * + * wrapped.last(); + * // => 3 + * + * console.log(array); + * // => [1, 2, 3] + */ + function wrapperCommit() { + return new LodashWrapper(this.value(), this.__chain__); + } - // Calculate answer - var k1 = k.sub(p1).sub(p2); - var k2 = q1.add(q2).neg(); - return { k1: k1, k2: k2 }; -}; + /** + * Gets the next value on a wrapped object following the + * [iterator protocol](https://mdn.io/iteration_protocols#iterator). + * + * @name next + * @memberOf _ + * @since 4.0.0 + * @category Seq + * @returns {Object} Returns the next iterator value. + * @example + * + * var wrapped = _([1, 2]); + * + * wrapped.next(); + * // => { 'done': false, 'value': 1 } + * + * wrapped.next(); + * // => { 'done': false, 'value': 2 } + * + * wrapped.next(); + * // => { 'done': true, 'value': undefined } + */ + function wrapperNext() { + if (this.__values__ === undefined) { + this.__values__ = toArray(this.value()); + } + var done = this.__index__ >= this.__values__.length, + value = done ? undefined : this.__values__[this.__index__++]; -ShortCurve.prototype.pointFromX = function pointFromX(x, odd) { - x = new BN(x, 16); - if (!x.red) - x = x.toRed(this.red); + return { 'done': done, 'value': value }; + } - var y2 = x.redSqr().redMul(x).redIAdd(x.redMul(this.a)).redIAdd(this.b); - var y = y2.redSqrt(); - if (y.redSqr().redSub(y2).cmp(this.zero) !== 0) - throw new Error('invalid point'); + /** + * Enables the wrapper to be iterable. + * + * @name Symbol.iterator + * @memberOf _ + * @since 4.0.0 + * @category Seq + * @returns {Object} Returns the wrapper object. + * @example + * + * var wrapped = _([1, 2]); + * + * wrapped[Symbol.iterator]() === wrapped; + * // => true + * + * Array.from(wrapped); + * // => [1, 2] + */ + function wrapperToIterator() { + return this; + } - // XXX Is there any way to tell if the number is odd without converting it - // to non-red form? - var isOdd = y.fromRed().isOdd(); - if (odd && !isOdd || !odd && isOdd) - y = y.redNeg(); + /** + * Creates a clone of the chain sequence planting `value` as the wrapped value. + * + * @name plant + * @memberOf _ + * @since 3.2.0 + * @category Seq + * @param {*} value The value to plant. + * @returns {Object} Returns the new `lodash` wrapper instance. + * @example + * + * function square(n) { + * return n * n; + * } + * + * var wrapped = _([1, 2]).map(square); + * var other = wrapped.plant([3, 4]); + * + * other.value(); + * // => [9, 16] + * + * wrapped.value(); + * // => [1, 4] + */ + function wrapperPlant(value) { + var result, + parent = this; - return this.point(x, y); -}; + while (parent instanceof baseLodash) { + var clone = wrapperClone(parent); + clone.__index__ = 0; + clone.__values__ = undefined; + if (result) { + previous.__wrapped__ = clone; + } else { + result = clone; + } + var previous = clone; + parent = parent.__wrapped__; + } + previous.__wrapped__ = value; + return result; + } -ShortCurve.prototype.validate = function validate(point) { - if (point.inf) - return true; + /** + * This method is the wrapper version of `_.reverse`. + * + * **Note:** This method mutates the wrapped array. + * + * @name reverse + * @memberOf _ + * @since 0.1.0 + * @category Seq + * @returns {Object} Returns the new `lodash` wrapper instance. + * @example + * + * var array = [1, 2, 3]; + * + * _(array).reverse().value() + * // => [3, 2, 1] + * + * console.log(array); + * // => [3, 2, 1] + */ + function wrapperReverse() { + var value = this.__wrapped__; + if (value instanceof LazyWrapper) { + var wrapped = value; + if (this.__actions__.length) { + wrapped = new LazyWrapper(this); + } + wrapped = wrapped.reverse(); + wrapped.__actions__.push({ + 'func': thru, + 'args': [reverse], + 'thisArg': undefined + }); + return new LodashWrapper(wrapped, this.__chain__); + } + return this.thru(reverse); + } - var x = point.x; - var y = point.y; + /** + * Executes the chain sequence to resolve the unwrapped value. + * + * @name value + * @memberOf _ + * @since 0.1.0 + * @alias toJSON, valueOf + * @category Seq + * @returns {*} Returns the resolved unwrapped value. + * @example + * + * _([1, 2, 3]).value(); + * // => [1, 2, 3] + */ + function wrapperValue() { + return baseWrapperValue(this.__wrapped__, this.__actions__); + } - var ax = this.a.redMul(x); - var rhs = x.redSqr().redMul(x).redIAdd(ax).redIAdd(this.b); - return y.redSqr().redISub(rhs).cmpn(0) === 0; -}; + /*------------------------------------------------------------------------*/ -ShortCurve.prototype._endoWnafMulAdd = - function _endoWnafMulAdd(points, coeffs, jacobianResult) { - var npoints = this._endoWnafT1; - var ncoeffs = this._endoWnafT2; - for (var i = 0; i < points.length; i++) { - var split = this._endoSplit(coeffs[i]); - var p = points[i]; - var beta = p._getBeta(); + /** + * Creates an object composed of keys generated from the results of running + * each element of `collection` thru `iteratee`. The corresponding value of + * each key is the number of times the key was returned by `iteratee`. The + * iteratee is invoked with one argument: (value). + * + * @static + * @memberOf _ + * @since 0.5.0 + * @category Collection + * @param {Array|Object} collection The collection to iterate over. + * @param {Function} [iteratee=_.identity] The iteratee to transform keys. + * @returns {Object} Returns the composed aggregate object. + * @example + * + * _.countBy([6.1, 4.2, 6.3], Math.floor); + * // => { '4': 1, '6': 2 } + * + * // The `_.property` iteratee shorthand. + * _.countBy(['one', 'two', 'three'], 'length'); + * // => { '3': 2, '5': 1 } + */ + var countBy = createAggregator(function(result, value, key) { + if (hasOwnProperty.call(result, key)) { + ++result[key]; + } else { + baseAssignValue(result, key, 1); + } + }); - if (split.k1.negative) { - split.k1.ineg(); - p = p.neg(true); - } - if (split.k2.negative) { - split.k2.ineg(); - beta = beta.neg(true); + /** + * Checks if `predicate` returns truthy for **all** elements of `collection`. + * Iteration is stopped once `predicate` returns falsey. The predicate is + * invoked with three arguments: (value, index|key, collection). + * + * **Note:** This method returns `true` for + * [empty collections](https://en.wikipedia.org/wiki/Empty_set) because + * [everything is true](https://en.wikipedia.org/wiki/Vacuous_truth) of + * elements of empty collections. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Collection + * @param {Array|Object} collection The collection to iterate over. + * @param {Function} [predicate=_.identity] The function invoked per iteration. + * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`. + * @returns {boolean} Returns `true` if all elements pass the predicate check, + * else `false`. + * @example + * + * _.every([true, 1, null, 'yes'], Boolean); + * // => false + * + * var users = [ + * { 'user': 'barney', 'age': 36, 'active': false }, + * { 'user': 'fred', 'age': 40, 'active': false } + * ]; + * + * // The `_.matches` iteratee shorthand. + * _.every(users, { 'user': 'barney', 'active': false }); + * // => false + * + * // The `_.matchesProperty` iteratee shorthand. + * _.every(users, ['active', false]); + * // => true + * + * // The `_.property` iteratee shorthand. + * _.every(users, 'active'); + * // => false + */ + function every(collection, predicate, guard) { + var func = isArray(collection) ? arrayEvery : baseEvery; + if (guard && isIterateeCall(collection, predicate, guard)) { + predicate = undefined; + } + return func(collection, getIteratee(predicate, 3)); } - npoints[i * 2] = p; - npoints[i * 2 + 1] = beta; - ncoeffs[i * 2] = split.k1; - ncoeffs[i * 2 + 1] = split.k2; - } - var res = this._wnafMulAdd(1, npoints, ncoeffs, i * 2, jacobianResult); - - // Clean-up references to points and coefficients - for (var j = 0; j < i * 2; j++) { - npoints[j] = null; - ncoeffs[j] = null; - } - return res; -}; - -function Point(curve, x, y, isRed) { - Base.BasePoint.call(this, curve, 'affine'); - if (x === null && y === null) { - this.x = null; - this.y = null; - this.inf = true; - } else { - this.x = new BN(x, 16); - this.y = new BN(y, 16); - // Force redgomery representation when loading from JSON - if (isRed) { - this.x.forceRed(this.curve.red); - this.y.forceRed(this.curve.red); + /** + * Iterates over elements of `collection`, returning an array of all elements + * `predicate` returns truthy for. The predicate is invoked with three + * arguments: (value, index|key, collection). + * + * **Note:** Unlike `_.remove`, this method returns a new array. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Collection + * @param {Array|Object} collection The collection to iterate over. + * @param {Function} [predicate=_.identity] The function invoked per iteration. + * @returns {Array} Returns the new filtered array. + * @see _.reject + * @example + * + * var users = [ + * { 'user': 'barney', 'age': 36, 'active': true }, + * { 'user': 'fred', 'age': 40, 'active': false } + * ]; + * + * _.filter(users, function(o) { return !o.active; }); + * // => objects for ['fred'] + * + * // The `_.matches` iteratee shorthand. + * _.filter(users, { 'age': 36, 'active': true }); + * // => objects for ['barney'] + * + * // The `_.matchesProperty` iteratee shorthand. + * _.filter(users, ['active', false]); + * // => objects for ['fred'] + * + * // The `_.property` iteratee shorthand. + * _.filter(users, 'active'); + * // => objects for ['barney'] + */ + function filter(collection, predicate) { + var func = isArray(collection) ? arrayFilter : baseFilter; + return func(collection, getIteratee(predicate, 3)); } - if (!this.x.red) - this.x = this.x.toRed(this.curve.red); - if (!this.y.red) - this.y = this.y.toRed(this.curve.red); - this.inf = false; - } -} -inherits(Point, Base.BasePoint); -ShortCurve.prototype.point = function point(x, y, isRed) { - return new Point(this, x, y, isRed); -}; + /** + * Iterates over elements of `collection`, returning the first element + * `predicate` returns truthy for. The predicate is invoked with three + * arguments: (value, index|key, collection). + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Collection + * @param {Array|Object} collection The collection to inspect. + * @param {Function} [predicate=_.identity] The function invoked per iteration. + * @param {number} [fromIndex=0] The index to search from. + * @returns {*} Returns the matched element, else `undefined`. + * @example + * + * var users = [ + * { 'user': 'barney', 'age': 36, 'active': true }, + * { 'user': 'fred', 'age': 40, 'active': false }, + * { 'user': 'pebbles', 'age': 1, 'active': true } + * ]; + * + * _.find(users, function(o) { return o.age < 40; }); + * // => object for 'barney' + * + * // The `_.matches` iteratee shorthand. + * _.find(users, { 'age': 1, 'active': true }); + * // => object for 'pebbles' + * + * // The `_.matchesProperty` iteratee shorthand. + * _.find(users, ['active', false]); + * // => object for 'fred' + * + * // The `_.property` iteratee shorthand. + * _.find(users, 'active'); + * // => object for 'barney' + */ + var find = createFind(findIndex); -ShortCurve.prototype.pointFromJSON = function pointFromJSON(obj, red) { - return Point.fromJSON(this, obj, red); -}; + /** + * This method is like `_.find` except that it iterates over elements of + * `collection` from right to left. + * + * @static + * @memberOf _ + * @since 2.0.0 + * @category Collection + * @param {Array|Object} collection The collection to inspect. + * @param {Function} [predicate=_.identity] The function invoked per iteration. + * @param {number} [fromIndex=collection.length-1] The index to search from. + * @returns {*} Returns the matched element, else `undefined`. + * @example + * + * _.findLast([1, 2, 3, 4], function(n) { + * return n % 2 == 1; + * }); + * // => 3 + */ + var findLast = createFind(findLastIndex); -Point.prototype._getBeta = function _getBeta() { - if (!this.curve.endo) - return; + /** + * Creates a flattened array of values by running each element in `collection` + * thru `iteratee` and flattening the mapped results. The iteratee is invoked + * with three arguments: (value, index|key, collection). + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Collection + * @param {Array|Object} collection The collection to iterate over. + * @param {Function} [iteratee=_.identity] The function invoked per iteration. + * @returns {Array} Returns the new flattened array. + * @example + * + * function duplicate(n) { + * return [n, n]; + * } + * + * _.flatMap([1, 2], duplicate); + * // => [1, 1, 2, 2] + */ + function flatMap(collection, iteratee) { + return baseFlatten(map(collection, iteratee), 1); + } - var pre = this.precomputed; - if (pre && pre.beta) - return pre.beta; + /** + * This method is like `_.flatMap` except that it recursively flattens the + * mapped results. + * + * @static + * @memberOf _ + * @since 4.7.0 + * @category Collection + * @param {Array|Object} collection The collection to iterate over. + * @param {Function} [iteratee=_.identity] The function invoked per iteration. + * @returns {Array} Returns the new flattened array. + * @example + * + * function duplicate(n) { + * return [[[n, n]]]; + * } + * + * _.flatMapDeep([1, 2], duplicate); + * // => [1, 1, 2, 2] + */ + function flatMapDeep(collection, iteratee) { + return baseFlatten(map(collection, iteratee), INFINITY); + } - var beta = this.curve.point(this.x.redMul(this.curve.endo.beta), this.y); - if (pre) { - var curve = this.curve; - var endoMul = function(p) { - return curve.point(p.x.redMul(curve.endo.beta), p.y); - }; - pre.beta = beta; - beta.precomputed = { - beta: null, - naf: pre.naf && { - wnd: pre.naf.wnd, - points: pre.naf.points.map(endoMul) - }, - doubles: pre.doubles && { - step: pre.doubles.step, - points: pre.doubles.points.map(endoMul) - } - }; - } - return beta; -}; + /** + * This method is like `_.flatMap` except that it recursively flattens the + * mapped results up to `depth` times. + * + * @static + * @memberOf _ + * @since 4.7.0 + * @category Collection + * @param {Array|Object} collection The collection to iterate over. + * @param {Function} [iteratee=_.identity] The function invoked per iteration. + * @param {number} [depth=1] The maximum recursion depth. + * @returns {Array} Returns the new flattened array. + * @example + * + * function duplicate(n) { + * return [[[n, n]]]; + * } + * + * _.flatMapDepth([1, 2], duplicate, 2); + * // => [[1, 1], [2, 2]] + */ + function flatMapDepth(collection, iteratee, depth) { + depth = depth === undefined ? 1 : toInteger(depth); + return baseFlatten(map(collection, iteratee), depth); + } -Point.prototype.toJSON = function toJSON() { - if (!this.precomputed) - return [ this.x, this.y ]; + /** + * Iterates over elements of `collection` and invokes `iteratee` for each element. + * The iteratee is invoked with three arguments: (value, index|key, collection). + * Iteratee functions may exit iteration early by explicitly returning `false`. + * + * **Note:** As with other "Collections" methods, objects with a "length" + * property are iterated like arrays. To avoid this behavior use `_.forIn` + * or `_.forOwn` for object iteration. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @alias each + * @category Collection + * @param {Array|Object} collection The collection to iterate over. + * @param {Function} [iteratee=_.identity] The function invoked per iteration. + * @returns {Array|Object} Returns `collection`. + * @see _.forEachRight + * @example + * + * _.forEach([1, 2], function(value) { + * console.log(value); + * }); + * // => Logs `1` then `2`. + * + * _.forEach({ 'a': 1, 'b': 2 }, function(value, key) { + * console.log(key); + * }); + * // => Logs 'a' then 'b' (iteration order is not guaranteed). + */ + function forEach(collection, iteratee) { + var func = isArray(collection) ? arrayEach : baseEach; + return func(collection, getIteratee(iteratee, 3)); + } - return [ this.x, this.y, this.precomputed && { - doubles: this.precomputed.doubles && { - step: this.precomputed.doubles.step, - points: this.precomputed.doubles.points.slice(1) - }, - naf: this.precomputed.naf && { - wnd: this.precomputed.naf.wnd, - points: this.precomputed.naf.points.slice(1) + /** + * This method is like `_.forEach` except that it iterates over elements of + * `collection` from right to left. + * + * @static + * @memberOf _ + * @since 2.0.0 + * @alias eachRight + * @category Collection + * @param {Array|Object} collection The collection to iterate over. + * @param {Function} [iteratee=_.identity] The function invoked per iteration. + * @returns {Array|Object} Returns `collection`. + * @see _.forEach + * @example + * + * _.forEachRight([1, 2], function(value) { + * console.log(value); + * }); + * // => Logs `2` then `1`. + */ + function forEachRight(collection, iteratee) { + var func = isArray(collection) ? arrayEachRight : baseEachRight; + return func(collection, getIteratee(iteratee, 3)); } - } ]; -}; -Point.fromJSON = function fromJSON(curve, obj, red) { - if (typeof obj === 'string') - obj = JSON.parse(obj); - var res = curve.point(obj[0], obj[1], red); - if (!obj[2]) - return res; + /** + * Creates an object composed of keys generated from the results of running + * each element of `collection` thru `iteratee`. The order of grouped values + * is determined by the order they occur in `collection`. The corresponding + * value of each key is an array of elements responsible for generating the + * key. The iteratee is invoked with one argument: (value). + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Collection + * @param {Array|Object} collection The collection to iterate over. + * @param {Function} [iteratee=_.identity] The iteratee to transform keys. + * @returns {Object} Returns the composed aggregate object. + * @example + * + * _.groupBy([6.1, 4.2, 6.3], Math.floor); + * // => { '4': [4.2], '6': [6.1, 6.3] } + * + * // The `_.property` iteratee shorthand. + * _.groupBy(['one', 'two', 'three'], 'length'); + * // => { '3': ['one', 'two'], '5': ['three'] } + */ + var groupBy = createAggregator(function(result, value, key) { + if (hasOwnProperty.call(result, key)) { + result[key].push(value); + } else { + baseAssignValue(result, key, [value]); + } + }); - function obj2point(obj) { - return curve.point(obj[0], obj[1], red); - } + /** + * Checks if `value` is in `collection`. If `collection` is a string, it's + * checked for a substring of `value`, otherwise + * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero) + * is used for equality comparisons. If `fromIndex` is negative, it's used as + * the offset from the end of `collection`. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Collection + * @param {Array|Object|string} collection The collection to inspect. + * @param {*} value The value to search for. + * @param {number} [fromIndex=0] The index to search from. + * @param- {Object} [guard] Enables use as an iteratee for methods like `_.reduce`. + * @returns {boolean} Returns `true` if `value` is found, else `false`. + * @example + * + * _.includes([1, 2, 3], 1); + * // => true + * + * _.includes([1, 2, 3], 1, 2); + * // => false + * + * _.includes({ 'a': 1, 'b': 2 }, 1); + * // => true + * + * _.includes('abcd', 'bc'); + * // => true + */ + function includes(collection, value, fromIndex, guard) { + collection = isArrayLike(collection) ? collection : values(collection); + fromIndex = (fromIndex && !guard) ? toInteger(fromIndex) : 0; - var pre = obj[2]; - res.precomputed = { - beta: null, - doubles: pre.doubles && { - step: pre.doubles.step, - points: [ res ].concat(pre.doubles.points.map(obj2point)) - }, - naf: pre.naf && { - wnd: pre.naf.wnd, - points: [ res ].concat(pre.naf.points.map(obj2point)) + var length = collection.length; + if (fromIndex < 0) { + fromIndex = nativeMax(length + fromIndex, 0); + } + return isString(collection) + ? (fromIndex <= length && collection.indexOf(value, fromIndex) > -1) + : (!!length && baseIndexOf(collection, value, fromIndex) > -1); } - }; - return res; -}; -Point.prototype.inspect = function inspect() { - if (this.isInfinity()) - return ''; - return ''; -}; + /** + * Invokes the method at `path` of each element in `collection`, returning + * an array of the results of each invoked method. Any additional arguments + * are provided to each invoked method. If `path` is a function, it's invoked + * for, and `this` bound to, each element in `collection`. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Collection + * @param {Array|Object} collection The collection to iterate over. + * @param {Array|Function|string} path The path of the method to invoke or + * the function invoked per iteration. + * @param {...*} [args] The arguments to invoke each method with. + * @returns {Array} Returns the array of results. + * @example + * + * _.invokeMap([[5, 1, 7], [3, 2, 1]], 'sort'); + * // => [[1, 5, 7], [1, 2, 3]] + * + * _.invokeMap([123, 456], String.prototype.split, ''); + * // => [['1', '2', '3'], ['4', '5', '6']] + */ + var invokeMap = baseRest(function(collection, path, args) { + var index = -1, + isFunc = typeof path == 'function', + result = isArrayLike(collection) ? Array(collection.length) : []; -Point.prototype.isInfinity = function isInfinity() { - return this.inf; -}; + baseEach(collection, function(value) { + result[++index] = isFunc ? apply(path, value, args) : baseInvoke(value, path, args); + }); + return result; + }); -Point.prototype.add = function add(p) { - // O + P = P - if (this.inf) - return p; + /** + * Creates an object composed of keys generated from the results of running + * each element of `collection` thru `iteratee`. The corresponding value of + * each key is the last element responsible for generating the key. The + * iteratee is invoked with one argument: (value). + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Collection + * @param {Array|Object} collection The collection to iterate over. + * @param {Function} [iteratee=_.identity] The iteratee to transform keys. + * @returns {Object} Returns the composed aggregate object. + * @example + * + * var array = [ + * { 'dir': 'left', 'code': 97 }, + * { 'dir': 'right', 'code': 100 } + * ]; + * + * _.keyBy(array, function(o) { + * return String.fromCharCode(o.code); + * }); + * // => { 'a': { 'dir': 'left', 'code': 97 }, 'd': { 'dir': 'right', 'code': 100 } } + * + * _.keyBy(array, 'dir'); + * // => { 'left': { 'dir': 'left', 'code': 97 }, 'right': { 'dir': 'right', 'code': 100 } } + */ + var keyBy = createAggregator(function(result, value, key) { + baseAssignValue(result, key, value); + }); - // P + O = P - if (p.inf) - return this; + /** + * Creates an array of values by running each element in `collection` thru + * `iteratee`. The iteratee is invoked with three arguments: + * (value, index|key, collection). + * + * Many lodash methods are guarded to work as iteratees for methods like + * `_.every`, `_.filter`, `_.map`, `_.mapValues`, `_.reject`, and `_.some`. + * + * The guarded methods are: + * `ary`, `chunk`, `curry`, `curryRight`, `drop`, `dropRight`, `every`, + * `fill`, `invert`, `parseInt`, `random`, `range`, `rangeRight`, `repeat`, + * `sampleSize`, `slice`, `some`, `sortBy`, `split`, `take`, `takeRight`, + * `template`, `trim`, `trimEnd`, `trimStart`, and `words` + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Collection + * @param {Array|Object} collection The collection to iterate over. + * @param {Function} [iteratee=_.identity] The function invoked per iteration. + * @returns {Array} Returns the new mapped array. + * @example + * + * function square(n) { + * return n * n; + * } + * + * _.map([4, 8], square); + * // => [16, 64] + * + * _.map({ 'a': 4, 'b': 8 }, square); + * // => [16, 64] (iteration order is not guaranteed) + * + * var users = [ + * { 'user': 'barney' }, + * { 'user': 'fred' } + * ]; + * + * // The `_.property` iteratee shorthand. + * _.map(users, 'user'); + * // => ['barney', 'fred'] + */ + function map(collection, iteratee) { + var func = isArray(collection) ? arrayMap : baseMap; + return func(collection, getIteratee(iteratee, 3)); + } - // P + P = 2P - if (this.eq(p)) - return this.dbl(); + /** + * This method is like `_.sortBy` except that it allows specifying the sort + * orders of the iteratees to sort by. If `orders` is unspecified, all values + * are sorted in ascending order. Otherwise, specify an order of "desc" for + * descending or "asc" for ascending sort order of corresponding values. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Collection + * @param {Array|Object} collection The collection to iterate over. + * @param {Array[]|Function[]|Object[]|string[]} [iteratees=[_.identity]] + * The iteratees to sort by. + * @param {string[]} [orders] The sort orders of `iteratees`. + * @param- {Object} [guard] Enables use as an iteratee for methods like `_.reduce`. + * @returns {Array} Returns the new sorted array. + * @example + * + * var users = [ + * { 'user': 'fred', 'age': 48 }, + * { 'user': 'barney', 'age': 34 }, + * { 'user': 'fred', 'age': 40 }, + * { 'user': 'barney', 'age': 36 } + * ]; + * + * // Sort by `user` in ascending order and by `age` in descending order. + * _.orderBy(users, ['user', 'age'], ['asc', 'desc']); + * // => objects for [['barney', 36], ['barney', 34], ['fred', 48], ['fred', 40]] + */ + function orderBy(collection, iteratees, orders, guard) { + if (collection == null) { + return []; + } + if (!isArray(iteratees)) { + iteratees = iteratees == null ? [] : [iteratees]; + } + orders = guard ? undefined : orders; + if (!isArray(orders)) { + orders = orders == null ? [] : [orders]; + } + return baseOrderBy(collection, iteratees, orders); + } - // P + (-P) = O - if (this.neg().eq(p)) - return this.curve.point(null, null); + /** + * Creates an array of elements split into two groups, the first of which + * contains elements `predicate` returns truthy for, the second of which + * contains elements `predicate` returns falsey for. The predicate is + * invoked with one argument: (value). + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category Collection + * @param {Array|Object} collection The collection to iterate over. + * @param {Function} [predicate=_.identity] The function invoked per iteration. + * @returns {Array} Returns the array of grouped elements. + * @example + * + * var users = [ + * { 'user': 'barney', 'age': 36, 'active': false }, + * { 'user': 'fred', 'age': 40, 'active': true }, + * { 'user': 'pebbles', 'age': 1, 'active': false } + * ]; + * + * _.partition(users, function(o) { return o.active; }); + * // => objects for [['fred'], ['barney', 'pebbles']] + * + * // The `_.matches` iteratee shorthand. + * _.partition(users, { 'age': 1, 'active': false }); + * // => objects for [['pebbles'], ['barney', 'fred']] + * + * // The `_.matchesProperty` iteratee shorthand. + * _.partition(users, ['active', false]); + * // => objects for [['barney', 'pebbles'], ['fred']] + * + * // The `_.property` iteratee shorthand. + * _.partition(users, 'active'); + * // => objects for [['fred'], ['barney', 'pebbles']] + */ + var partition = createAggregator(function(result, value, key) { + result[key ? 0 : 1].push(value); + }, function() { return [[], []]; }); - // P + Q = O - if (this.x.cmp(p.x) === 0) - return this.curve.point(null, null); + /** + * Reduces `collection` to a value which is the accumulated result of running + * each element in `collection` thru `iteratee`, where each successive + * invocation is supplied the return value of the previous. If `accumulator` + * is not given, the first element of `collection` is used as the initial + * value. The iteratee is invoked with four arguments: + * (accumulator, value, index|key, collection). + * + * Many lodash methods are guarded to work as iteratees for methods like + * `_.reduce`, `_.reduceRight`, and `_.transform`. + * + * The guarded methods are: + * `assign`, `defaults`, `defaultsDeep`, `includes`, `merge`, `orderBy`, + * and `sortBy` + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Collection + * @param {Array|Object} collection The collection to iterate over. + * @param {Function} [iteratee=_.identity] The function invoked per iteration. + * @param {*} [accumulator] The initial value. + * @returns {*} Returns the accumulated value. + * @see _.reduceRight + * @example + * + * _.reduce([1, 2], function(sum, n) { + * return sum + n; + * }, 0); + * // => 3 + * + * _.reduce({ 'a': 1, 'b': 2, 'c': 1 }, function(result, value, key) { + * (result[value] || (result[value] = [])).push(key); + * return result; + * }, {}); + * // => { '1': ['a', 'c'], '2': ['b'] } (iteration order is not guaranteed) + */ + function reduce(collection, iteratee, accumulator) { + var func = isArray(collection) ? arrayReduce : baseReduce, + initAccum = arguments.length < 3; - var c = this.y.redSub(p.y); - if (c.cmpn(0) !== 0) - c = c.redMul(this.x.redSub(p.x).redInvm()); - var nx = c.redSqr().redISub(this.x).redISub(p.x); - var ny = c.redMul(this.x.redSub(nx)).redISub(this.y); - return this.curve.point(nx, ny); -}; + return func(collection, getIteratee(iteratee, 4), accumulator, initAccum, baseEach); + } -Point.prototype.dbl = function dbl() { - if (this.inf) - return this; + /** + * This method is like `_.reduce` except that it iterates over elements of + * `collection` from right to left. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Collection + * @param {Array|Object} collection The collection to iterate over. + * @param {Function} [iteratee=_.identity] The function invoked per iteration. + * @param {*} [accumulator] The initial value. + * @returns {*} Returns the accumulated value. + * @see _.reduce + * @example + * + * var array = [[0, 1], [2, 3], [4, 5]]; + * + * _.reduceRight(array, function(flattened, other) { + * return flattened.concat(other); + * }, []); + * // => [4, 5, 2, 3, 0, 1] + */ + function reduceRight(collection, iteratee, accumulator) { + var func = isArray(collection) ? arrayReduceRight : baseReduce, + initAccum = arguments.length < 3; - // 2P = O - var ys1 = this.y.redAdd(this.y); - if (ys1.cmpn(0) === 0) - return this.curve.point(null, null); + return func(collection, getIteratee(iteratee, 4), accumulator, initAccum, baseEachRight); + } - var a = this.curve.a; + /** + * The opposite of `_.filter`; this method returns the elements of `collection` + * that `predicate` does **not** return truthy for. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Collection + * @param {Array|Object} collection The collection to iterate over. + * @param {Function} [predicate=_.identity] The function invoked per iteration. + * @returns {Array} Returns the new filtered array. + * @see _.filter + * @example + * + * var users = [ + * { 'user': 'barney', 'age': 36, 'active': false }, + * { 'user': 'fred', 'age': 40, 'active': true } + * ]; + * + * _.reject(users, function(o) { return !o.active; }); + * // => objects for ['fred'] + * + * // The `_.matches` iteratee shorthand. + * _.reject(users, { 'age': 40, 'active': true }); + * // => objects for ['barney'] + * + * // The `_.matchesProperty` iteratee shorthand. + * _.reject(users, ['active', false]); + * // => objects for ['fred'] + * + * // The `_.property` iteratee shorthand. + * _.reject(users, 'active'); + * // => objects for ['barney'] + */ + function reject(collection, predicate) { + var func = isArray(collection) ? arrayFilter : baseFilter; + return func(collection, negate(getIteratee(predicate, 3))); + } - var x2 = this.x.redSqr(); - var dyinv = ys1.redInvm(); - var c = x2.redAdd(x2).redIAdd(x2).redIAdd(a).redMul(dyinv); + /** + * Gets a random element from `collection`. + * + * @static + * @memberOf _ + * @since 2.0.0 + * @category Collection + * @param {Array|Object} collection The collection to sample. + * @returns {*} Returns the random element. + * @example + * + * _.sample([1, 2, 3, 4]); + * // => 2 + */ + function sample(collection) { + var func = isArray(collection) ? arraySample : baseSample; + return func(collection); + } + + /** + * Gets `n` random elements at unique keys from `collection` up to the + * size of `collection`. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Collection + * @param {Array|Object} collection The collection to sample. + * @param {number} [n=1] The number of elements to sample. + * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`. + * @returns {Array} Returns the random elements. + * @example + * + * _.sampleSize([1, 2, 3], 2); + * // => [3, 1] + * + * _.sampleSize([1, 2, 3], 4); + * // => [2, 3, 1] + */ + function sampleSize(collection, n, guard) { + if ((guard ? isIterateeCall(collection, n, guard) : n === undefined)) { + n = 1; + } else { + n = toInteger(n); + } + var func = isArray(collection) ? arraySampleSize : baseSampleSize; + return func(collection, n); + } - var nx = c.redSqr().redISub(this.x.redAdd(this.x)); - var ny = c.redMul(this.x.redSub(nx)).redISub(this.y); - return this.curve.point(nx, ny); -}; + /** + * Creates an array of shuffled values, using a version of the + * [Fisher-Yates shuffle](https://en.wikipedia.org/wiki/Fisher-Yates_shuffle). + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Collection + * @param {Array|Object} collection The collection to shuffle. + * @returns {Array} Returns the new shuffled array. + * @example + * + * _.shuffle([1, 2, 3, 4]); + * // => [4, 1, 3, 2] + */ + function shuffle(collection) { + var func = isArray(collection) ? arrayShuffle : baseShuffle; + return func(collection); + } -Point.prototype.getX = function getX() { - return this.x.fromRed(); -}; + /** + * Gets the size of `collection` by returning its length for array-like + * values or the number of own enumerable string keyed properties for objects. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Collection + * @param {Array|Object|string} collection The collection to inspect. + * @returns {number} Returns the collection size. + * @example + * + * _.size([1, 2, 3]); + * // => 3 + * + * _.size({ 'a': 1, 'b': 2 }); + * // => 2 + * + * _.size('pebbles'); + * // => 7 + */ + function size(collection) { + if (collection == null) { + return 0; + } + if (isArrayLike(collection)) { + return isString(collection) ? stringSize(collection) : collection.length; + } + var tag = getTag(collection); + if (tag == mapTag || tag == setTag) { + return collection.size; + } + return baseKeys(collection).length; + } -Point.prototype.getY = function getY() { - return this.y.fromRed(); -}; + /** + * Checks if `predicate` returns truthy for **any** element of `collection`. + * Iteration is stopped once `predicate` returns truthy. The predicate is + * invoked with three arguments: (value, index|key, collection). + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Collection + * @param {Array|Object} collection The collection to iterate over. + * @param {Function} [predicate=_.identity] The function invoked per iteration. + * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`. + * @returns {boolean} Returns `true` if any element passes the predicate check, + * else `false`. + * @example + * + * _.some([null, 0, 'yes', false], Boolean); + * // => true + * + * var users = [ + * { 'user': 'barney', 'active': true }, + * { 'user': 'fred', 'active': false } + * ]; + * + * // The `_.matches` iteratee shorthand. + * _.some(users, { 'user': 'barney', 'active': false }); + * // => false + * + * // The `_.matchesProperty` iteratee shorthand. + * _.some(users, ['active', false]); + * // => true + * + * // The `_.property` iteratee shorthand. + * _.some(users, 'active'); + * // => true + */ + function some(collection, predicate, guard) { + var func = isArray(collection) ? arraySome : baseSome; + if (guard && isIterateeCall(collection, predicate, guard)) { + predicate = undefined; + } + return func(collection, getIteratee(predicate, 3)); + } -Point.prototype.mul = function mul(k) { - k = new BN(k, 16); + /** + * Creates an array of elements, sorted in ascending order by the results of + * running each element in a collection thru each iteratee. This method + * performs a stable sort, that is, it preserves the original sort order of + * equal elements. The iteratees are invoked with one argument: (value). + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Collection + * @param {Array|Object} collection The collection to iterate over. + * @param {...(Function|Function[])} [iteratees=[_.identity]] + * The iteratees to sort by. + * @returns {Array} Returns the new sorted array. + * @example + * + * var users = [ + * { 'user': 'fred', 'age': 48 }, + * { 'user': 'barney', 'age': 36 }, + * { 'user': 'fred', 'age': 40 }, + * { 'user': 'barney', 'age': 34 } + * ]; + * + * _.sortBy(users, [function(o) { return o.user; }]); + * // => objects for [['barney', 36], ['barney', 34], ['fred', 48], ['fred', 40]] + * + * _.sortBy(users, ['user', 'age']); + * // => objects for [['barney', 34], ['barney', 36], ['fred', 40], ['fred', 48]] + */ + var sortBy = baseRest(function(collection, iteratees) { + if (collection == null) { + return []; + } + var length = iteratees.length; + if (length > 1 && isIterateeCall(collection, iteratees[0], iteratees[1])) { + iteratees = []; + } else if (length > 2 && isIterateeCall(iteratees[0], iteratees[1], iteratees[2])) { + iteratees = [iteratees[0]]; + } + return baseOrderBy(collection, baseFlatten(iteratees, 1), []); + }); - if (this._hasDoubles(k)) - return this.curve._fixedNafMul(this, k); - else if (this.curve.endo) - return this.curve._endoWnafMulAdd([ this ], [ k ]); - else - return this.curve._wnafMul(this, k); -}; + /*------------------------------------------------------------------------*/ -Point.prototype.mulAdd = function mulAdd(k1, p2, k2) { - var points = [ this, p2 ]; - var coeffs = [ k1, k2 ]; - if (this.curve.endo) - return this.curve._endoWnafMulAdd(points, coeffs); - else - return this.curve._wnafMulAdd(1, points, coeffs, 2); -}; + /** + * Gets the timestamp of the number of milliseconds that have elapsed since + * the Unix epoch (1 January 1970 00:00:00 UTC). + * + * @static + * @memberOf _ + * @since 2.4.0 + * @category Date + * @returns {number} Returns the timestamp. + * @example + * + * _.defer(function(stamp) { + * console.log(_.now() - stamp); + * }, _.now()); + * // => Logs the number of milliseconds it took for the deferred invocation. + */ + var now = ctxNow || function() { + return root.Date.now(); + }; -Point.prototype.jmulAdd = function jmulAdd(k1, p2, k2) { - var points = [ this, p2 ]; - var coeffs = [ k1, k2 ]; - if (this.curve.endo) - return this.curve._endoWnafMulAdd(points, coeffs, true); - else - return this.curve._wnafMulAdd(1, points, coeffs, 2, true); -}; + /*------------------------------------------------------------------------*/ -Point.prototype.eq = function eq(p) { - return this === p || - this.inf === p.inf && - (this.inf || this.x.cmp(p.x) === 0 && this.y.cmp(p.y) === 0); -}; + /** + * The opposite of `_.before`; this method creates a function that invokes + * `func` once it's called `n` or more times. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Function + * @param {number} n The number of calls before `func` is invoked. + * @param {Function} func The function to restrict. + * @returns {Function} Returns the new restricted function. + * @example + * + * var saves = ['profile', 'settings']; + * + * var done = _.after(saves.length, function() { + * console.log('done saving!'); + * }); + * + * _.forEach(saves, function(type) { + * asyncSave({ 'type': type, 'complete': done }); + * }); + * // => Logs 'done saving!' after the two async saves have completed. + */ + function after(n, func) { + if (typeof func != 'function') { + throw new TypeError(FUNC_ERROR_TEXT); + } + n = toInteger(n); + return function() { + if (--n < 1) { + return func.apply(this, arguments); + } + }; + } -Point.prototype.neg = function neg(_precompute) { - if (this.inf) - return this; + /** + * Creates a function that invokes `func`, with up to `n` arguments, + * ignoring any additional arguments. + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category Function + * @param {Function} func The function to cap arguments for. + * @param {number} [n=func.length] The arity cap. + * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`. + * @returns {Function} Returns the new capped function. + * @example + * + * _.map(['6', '8', '10'], _.ary(parseInt, 1)); + * // => [6, 8, 10] + */ + function ary(func, n, guard) { + n = guard ? undefined : n; + n = (func && n == null) ? func.length : n; + return createWrap(func, WRAP_ARY_FLAG, undefined, undefined, undefined, undefined, n); + } - var res = this.curve.point(this.x, this.y.redNeg()); - if (_precompute && this.precomputed) { - var pre = this.precomputed; - var negate = function(p) { - return p.neg(); - }; - res.precomputed = { - naf: pre.naf && { - wnd: pre.naf.wnd, - points: pre.naf.points.map(negate) - }, - doubles: pre.doubles && { - step: pre.doubles.step, - points: pre.doubles.points.map(negate) + /** + * Creates a function that invokes `func`, with the `this` binding and arguments + * of the created function, while it's called less than `n` times. Subsequent + * calls to the created function return the result of the last `func` invocation. + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category Function + * @param {number} n The number of calls at which `func` is no longer invoked. + * @param {Function} func The function to restrict. + * @returns {Function} Returns the new restricted function. + * @example + * + * jQuery(element).on('click', _.before(5, addContactToList)); + * // => Allows adding up to 4 contacts to the list. + */ + function before(n, func) { + var result; + if (typeof func != 'function') { + throw new TypeError(FUNC_ERROR_TEXT); } - }; - } - return res; -}; + n = toInteger(n); + return function() { + if (--n > 0) { + result = func.apply(this, arguments); + } + if (n <= 1) { + func = undefined; + } + return result; + }; + } -Point.prototype.toJ = function toJ() { - if (this.inf) - return this.curve.jpoint(null, null, null); + /** + * Creates a function that invokes `func` with the `this` binding of `thisArg` + * and `partials` prepended to the arguments it receives. + * + * The `_.bind.placeholder` value, which defaults to `_` in monolithic builds, + * may be used as a placeholder for partially applied arguments. + * + * **Note:** Unlike native `Function#bind`, this method doesn't set the "length" + * property of bound functions. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Function + * @param {Function} func The function to bind. + * @param {*} thisArg The `this` binding of `func`. + * @param {...*} [partials] The arguments to be partially applied. + * @returns {Function} Returns the new bound function. + * @example + * + * function greet(greeting, punctuation) { + * return greeting + ' ' + this.user + punctuation; + * } + * + * var object = { 'user': 'fred' }; + * + * var bound = _.bind(greet, object, 'hi'); + * bound('!'); + * // => 'hi fred!' + * + * // Bound with placeholders. + * var bound = _.bind(greet, object, _, '!'); + * bound('hi'); + * // => 'hi fred!' + */ + var bind = baseRest(function(func, thisArg, partials) { + var bitmask = WRAP_BIND_FLAG; + if (partials.length) { + var holders = replaceHolders(partials, getHolder(bind)); + bitmask |= WRAP_PARTIAL_FLAG; + } + return createWrap(func, bitmask, thisArg, partials, holders); + }); - var res = this.curve.jpoint(this.x, this.y, this.curve.one); - return res; -}; + /** + * Creates a function that invokes the method at `object[key]` with `partials` + * prepended to the arguments it receives. + * + * This method differs from `_.bind` by allowing bound functions to reference + * methods that may be redefined or don't yet exist. See + * [Peter Michaux's article](http://peter.michaux.ca/articles/lazy-function-definition-pattern) + * for more details. + * + * The `_.bindKey.placeholder` value, which defaults to `_` in monolithic + * builds, may be used as a placeholder for partially applied arguments. + * + * @static + * @memberOf _ + * @since 0.10.0 + * @category Function + * @param {Object} object The object to invoke the method on. + * @param {string} key The key of the method. + * @param {...*} [partials] The arguments to be partially applied. + * @returns {Function} Returns the new bound function. + * @example + * + * var object = { + * 'user': 'fred', + * 'greet': function(greeting, punctuation) { + * return greeting + ' ' + this.user + punctuation; + * } + * }; + * + * var bound = _.bindKey(object, 'greet', 'hi'); + * bound('!'); + * // => 'hi fred!' + * + * object.greet = function(greeting, punctuation) { + * return greeting + 'ya ' + this.user + punctuation; + * }; + * + * bound('!'); + * // => 'hiya fred!' + * + * // Bound with placeholders. + * var bound = _.bindKey(object, 'greet', _, '!'); + * bound('hi'); + * // => 'hiya fred!' + */ + var bindKey = baseRest(function(object, key, partials) { + var bitmask = WRAP_BIND_FLAG | WRAP_BIND_KEY_FLAG; + if (partials.length) { + var holders = replaceHolders(partials, getHolder(bindKey)); + bitmask |= WRAP_PARTIAL_FLAG; + } + return createWrap(key, bitmask, object, partials, holders); + }); -function JPoint(curve, x, y, z) { - Base.BasePoint.call(this, curve, 'jacobian'); - if (x === null && y === null && z === null) { - this.x = this.curve.one; - this.y = this.curve.one; - this.z = new BN(0); - } else { - this.x = new BN(x, 16); - this.y = new BN(y, 16); - this.z = new BN(z, 16); - } - if (!this.x.red) - this.x = this.x.toRed(this.curve.red); - if (!this.y.red) - this.y = this.y.toRed(this.curve.red); - if (!this.z.red) - this.z = this.z.toRed(this.curve.red); + /** + * Creates a function that accepts arguments of `func` and either invokes + * `func` returning its result, if at least `arity` number of arguments have + * been provided, or returns a function that accepts the remaining `func` + * arguments, and so on. The arity of `func` may be specified if `func.length` + * is not sufficient. + * + * The `_.curry.placeholder` value, which defaults to `_` in monolithic builds, + * may be used as a placeholder for provided arguments. + * + * **Note:** This method doesn't set the "length" property of curried functions. + * + * @static + * @memberOf _ + * @since 2.0.0 + * @category Function + * @param {Function} func The function to curry. + * @param {number} [arity=func.length] The arity of `func`. + * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`. + * @returns {Function} Returns the new curried function. + * @example + * + * var abc = function(a, b, c) { + * return [a, b, c]; + * }; + * + * var curried = _.curry(abc); + * + * curried(1)(2)(3); + * // => [1, 2, 3] + * + * curried(1, 2)(3); + * // => [1, 2, 3] + * + * curried(1, 2, 3); + * // => [1, 2, 3] + * + * // Curried with placeholders. + * curried(1)(_, 3)(2); + * // => [1, 2, 3] + */ + function curry(func, arity, guard) { + arity = guard ? undefined : arity; + var result = createWrap(func, WRAP_CURRY_FLAG, undefined, undefined, undefined, undefined, undefined, arity); + result.placeholder = curry.placeholder; + return result; + } + + /** + * This method is like `_.curry` except that arguments are applied to `func` + * in the manner of `_.partialRight` instead of `_.partial`. + * + * The `_.curryRight.placeholder` value, which defaults to `_` in monolithic + * builds, may be used as a placeholder for provided arguments. + * + * **Note:** This method doesn't set the "length" property of curried functions. + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category Function + * @param {Function} func The function to curry. + * @param {number} [arity=func.length] The arity of `func`. + * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`. + * @returns {Function} Returns the new curried function. + * @example + * + * var abc = function(a, b, c) { + * return [a, b, c]; + * }; + * + * var curried = _.curryRight(abc); + * + * curried(3)(2)(1); + * // => [1, 2, 3] + * + * curried(2, 3)(1); + * // => [1, 2, 3] + * + * curried(1, 2, 3); + * // => [1, 2, 3] + * + * // Curried with placeholders. + * curried(3)(1, _)(2); + * // => [1, 2, 3] + */ + function curryRight(func, arity, guard) { + arity = guard ? undefined : arity; + var result = createWrap(func, WRAP_CURRY_RIGHT_FLAG, undefined, undefined, undefined, undefined, undefined, arity); + result.placeholder = curryRight.placeholder; + return result; + } - this.zOne = this.z === this.curve.one; -} -inherits(JPoint, Base.BasePoint); + /** + * Creates a debounced function that delays invoking `func` until after `wait` + * milliseconds have elapsed since the last time the debounced function was + * invoked. The debounced function comes with a `cancel` method to cancel + * delayed `func` invocations and a `flush` method to immediately invoke them. + * Provide `options` to indicate whether `func` should be invoked on the + * leading and/or trailing edge of the `wait` timeout. The `func` is invoked + * with the last arguments provided to the debounced function. Subsequent + * calls to the debounced function return the result of the last `func` + * invocation. + * + * **Note:** If `leading` and `trailing` options are `true`, `func` is + * invoked on the trailing edge of the timeout only if the debounced function + * is invoked more than once during the `wait` timeout. + * + * If `wait` is `0` and `leading` is `false`, `func` invocation is deferred + * until to the next tick, similar to `setTimeout` with a timeout of `0`. + * + * See [David Corbacho's article](https://css-tricks.com/debouncing-throttling-explained-examples/) + * for details over the differences between `_.debounce` and `_.throttle`. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Function + * @param {Function} func The function to debounce. + * @param {number} [wait=0] The number of milliseconds to delay. + * @param {Object} [options={}] The options object. + * @param {boolean} [options.leading=false] + * Specify invoking on the leading edge of the timeout. + * @param {number} [options.maxWait] + * The maximum time `func` is allowed to be delayed before it's invoked. + * @param {boolean} [options.trailing=true] + * Specify invoking on the trailing edge of the timeout. + * @returns {Function} Returns the new debounced function. + * @example + * + * // Avoid costly calculations while the window size is in flux. + * jQuery(window).on('resize', _.debounce(calculateLayout, 150)); + * + * // Invoke `sendMail` when clicked, debouncing subsequent calls. + * jQuery(element).on('click', _.debounce(sendMail, 300, { + * 'leading': true, + * 'trailing': false + * })); + * + * // Ensure `batchLog` is invoked once after 1 second of debounced calls. + * var debounced = _.debounce(batchLog, 250, { 'maxWait': 1000 }); + * var source = new EventSource('/stream'); + * jQuery(source).on('message', debounced); + * + * // Cancel the trailing debounced invocation. + * jQuery(window).on('popstate', debounced.cancel); + */ + function debounce(func, wait, options) { + var lastArgs, + lastThis, + maxWait, + result, + timerId, + lastCallTime, + lastInvokeTime = 0, + leading = false, + maxing = false, + trailing = true; -ShortCurve.prototype.jpoint = function jpoint(x, y, z) { - return new JPoint(this, x, y, z); -}; + if (typeof func != 'function') { + throw new TypeError(FUNC_ERROR_TEXT); + } + wait = toNumber(wait) || 0; + if (isObject(options)) { + leading = !!options.leading; + maxing = 'maxWait' in options; + maxWait = maxing ? nativeMax(toNumber(options.maxWait) || 0, wait) : maxWait; + trailing = 'trailing' in options ? !!options.trailing : trailing; + } -JPoint.prototype.toP = function toP() { - if (this.isInfinity()) - return this.curve.point(null, null); + function invokeFunc(time) { + var args = lastArgs, + thisArg = lastThis; - var zinv = this.z.redInvm(); - var zinv2 = zinv.redSqr(); - var ax = this.x.redMul(zinv2); - var ay = this.y.redMul(zinv2).redMul(zinv); + lastArgs = lastThis = undefined; + lastInvokeTime = time; + result = func.apply(thisArg, args); + return result; + } - return this.curve.point(ax, ay); -}; + function leadingEdge(time) { + // Reset any `maxWait` timer. + lastInvokeTime = time; + // Start the timer for the trailing edge. + timerId = setTimeout(timerExpired, wait); + // Invoke the leading edge. + return leading ? invokeFunc(time) : result; + } -JPoint.prototype.neg = function neg() { - return this.curve.jpoint(this.x, this.y.redNeg(), this.z); -}; + function remainingWait(time) { + var timeSinceLastCall = time - lastCallTime, + timeSinceLastInvoke = time - lastInvokeTime, + timeWaiting = wait - timeSinceLastCall; -JPoint.prototype.add = function add(p) { - // O + P = P - if (this.isInfinity()) - return p; + return maxing + ? nativeMin(timeWaiting, maxWait - timeSinceLastInvoke) + : timeWaiting; + } - // P + O = P - if (p.isInfinity()) - return this; + function shouldInvoke(time) { + var timeSinceLastCall = time - lastCallTime, + timeSinceLastInvoke = time - lastInvokeTime; - // 12M + 4S + 7A - var pz2 = p.z.redSqr(); - var z2 = this.z.redSqr(); - var u1 = this.x.redMul(pz2); - var u2 = p.x.redMul(z2); - var s1 = this.y.redMul(pz2.redMul(p.z)); - var s2 = p.y.redMul(z2.redMul(this.z)); + // Either this is the first call, activity has stopped and we're at the + // trailing edge, the system time has gone backwards and we're treating + // it as the trailing edge, or we've hit the `maxWait` limit. + return (lastCallTime === undefined || (timeSinceLastCall >= wait) || + (timeSinceLastCall < 0) || (maxing && timeSinceLastInvoke >= maxWait)); + } - var h = u1.redSub(u2); - var r = s1.redSub(s2); - if (h.cmpn(0) === 0) { - if (r.cmpn(0) !== 0) - return this.curve.jpoint(null, null, null); - else - return this.dbl(); - } + function timerExpired() { + var time = now(); + if (shouldInvoke(time)) { + return trailingEdge(time); + } + // Restart the timer. + timerId = setTimeout(timerExpired, remainingWait(time)); + } - var h2 = h.redSqr(); - var h3 = h2.redMul(h); - var v = u1.redMul(h2); + function trailingEdge(time) { + timerId = undefined; - var nx = r.redSqr().redIAdd(h3).redISub(v).redISub(v); - var ny = r.redMul(v.redISub(nx)).redISub(s1.redMul(h3)); - var nz = this.z.redMul(p.z).redMul(h); + // Only invoke if we have `lastArgs` which means `func` has been + // debounced at least once. + if (trailing && lastArgs) { + return invokeFunc(time); + } + lastArgs = lastThis = undefined; + return result; + } - return this.curve.jpoint(nx, ny, nz); -}; + function cancel() { + if (timerId !== undefined) { + clearTimeout(timerId); + } + lastInvokeTime = 0; + lastArgs = lastCallTime = lastThis = timerId = undefined; + } -JPoint.prototype.mixedAdd = function mixedAdd(p) { - // O + P = P - if (this.isInfinity()) - return p.toJ(); + function flush() { + return timerId === undefined ? result : trailingEdge(now()); + } - // P + O = P - if (p.isInfinity()) - return this; + function debounced() { + var time = now(), + isInvoking = shouldInvoke(time); - // 8M + 3S + 7A - var z2 = this.z.redSqr(); - var u1 = this.x; - var u2 = p.x.redMul(z2); - var s1 = this.y; - var s2 = p.y.redMul(z2).redMul(this.z); + lastArgs = arguments; + lastThis = this; + lastCallTime = time; - var h = u1.redSub(u2); - var r = s1.redSub(s2); - if (h.cmpn(0) === 0) { - if (r.cmpn(0) !== 0) - return this.curve.jpoint(null, null, null); - else - return this.dbl(); - } + if (isInvoking) { + if (timerId === undefined) { + return leadingEdge(lastCallTime); + } + if (maxing) { + // Handle invocations in a tight loop. + timerId = setTimeout(timerExpired, wait); + return invokeFunc(lastCallTime); + } + } + if (timerId === undefined) { + timerId = setTimeout(timerExpired, wait); + } + return result; + } + debounced.cancel = cancel; + debounced.flush = flush; + return debounced; + } - var h2 = h.redSqr(); - var h3 = h2.redMul(h); - var v = u1.redMul(h2); + /** + * Defers invoking the `func` until the current call stack has cleared. Any + * additional arguments are provided to `func` when it's invoked. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Function + * @param {Function} func The function to defer. + * @param {...*} [args] The arguments to invoke `func` with. + * @returns {number} Returns the timer id. + * @example + * + * _.defer(function(text) { + * console.log(text); + * }, 'deferred'); + * // => Logs 'deferred' after one millisecond. + */ + var defer = baseRest(function(func, args) { + return baseDelay(func, 1, args); + }); - var nx = r.redSqr().redIAdd(h3).redISub(v).redISub(v); - var ny = r.redMul(v.redISub(nx)).redISub(s1.redMul(h3)); - var nz = this.z.redMul(h); + /** + * Invokes `func` after `wait` milliseconds. Any additional arguments are + * provided to `func` when it's invoked. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Function + * @param {Function} func The function to delay. + * @param {number} wait The number of milliseconds to delay invocation. + * @param {...*} [args] The arguments to invoke `func` with. + * @returns {number} Returns the timer id. + * @example + * + * _.delay(function(text) { + * console.log(text); + * }, 1000, 'later'); + * // => Logs 'later' after one second. + */ + var delay = baseRest(function(func, wait, args) { + return baseDelay(func, toNumber(wait) || 0, args); + }); - return this.curve.jpoint(nx, ny, nz); -}; + /** + * Creates a function that invokes `func` with arguments reversed. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Function + * @param {Function} func The function to flip arguments for. + * @returns {Function} Returns the new flipped function. + * @example + * + * var flipped = _.flip(function() { + * return _.toArray(arguments); + * }); + * + * flipped('a', 'b', 'c', 'd'); + * // => ['d', 'c', 'b', 'a'] + */ + function flip(func) { + return createWrap(func, WRAP_FLIP_FLAG); + } -JPoint.prototype.dblp = function dblp(pow) { - if (pow === 0) - return this; - if (this.isInfinity()) - return this; - if (!pow) - return this.dbl(); + /** + * Creates a function that memoizes the result of `func`. If `resolver` is + * provided, it determines the cache key for storing the result based on the + * arguments provided to the memoized function. By default, the first argument + * provided to the memoized function is used as the map cache key. The `func` + * is invoked with the `this` binding of the memoized function. + * + * **Note:** The cache is exposed as the `cache` property on the memoized + * function. Its creation may be customized by replacing the `_.memoize.Cache` + * constructor with one whose instances implement the + * [`Map`](http://ecma-international.org/ecma-262/7.0/#sec-properties-of-the-map-prototype-object) + * method interface of `clear`, `delete`, `get`, `has`, and `set`. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Function + * @param {Function} func The function to have its output memoized. + * @param {Function} [resolver] The function to resolve the cache key. + * @returns {Function} Returns the new memoized function. + * @example + * + * var object = { 'a': 1, 'b': 2 }; + * var other = { 'c': 3, 'd': 4 }; + * + * var values = _.memoize(_.values); + * values(object); + * // => [1, 2] + * + * values(other); + * // => [3, 4] + * + * object.a = 2; + * values(object); + * // => [1, 2] + * + * // Modify the result cache. + * values.cache.set(object, ['a', 'b']); + * values(object); + * // => ['a', 'b'] + * + * // Replace `_.memoize.Cache`. + * _.memoize.Cache = WeakMap; + */ + function memoize(func, resolver) { + if (typeof func != 'function' || (resolver != null && typeof resolver != 'function')) { + throw new TypeError(FUNC_ERROR_TEXT); + } + var memoized = function() { + var args = arguments, + key = resolver ? resolver.apply(this, args) : args[0], + cache = memoized.cache; - if (this.curve.zeroA || this.curve.threeA) { - var r = this; - for (var i = 0; i < pow; i++) - r = r.dbl(); - return r; - } + if (cache.has(key)) { + return cache.get(key); + } + var result = func.apply(this, args); + memoized.cache = cache.set(key, result) || cache; + return result; + }; + memoized.cache = new (memoize.Cache || MapCache); + return memoized; + } - // 1M + 2S + 1A + N * (4S + 5M + 8A) - // N = 1 => 6M + 6S + 9A - var a = this.curve.a; - var tinv = this.curve.tinv; + // Expose `MapCache`. + memoize.Cache = MapCache; - var jx = this.x; - var jy = this.y; - var jz = this.z; - var jz4 = jz.redSqr().redSqr(); + /** + * Creates a function that negates the result of the predicate `func`. The + * `func` predicate is invoked with the `this` binding and arguments of the + * created function. + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category Function + * @param {Function} predicate The predicate to negate. + * @returns {Function} Returns the new negated function. + * @example + * + * function isEven(n) { + * return n % 2 == 0; + * } + * + * _.filter([1, 2, 3, 4, 5, 6], _.negate(isEven)); + * // => [1, 3, 5] + */ + function negate(predicate) { + if (typeof predicate != 'function') { + throw new TypeError(FUNC_ERROR_TEXT); + } + return function() { + var args = arguments; + switch (args.length) { + case 0: return !predicate.call(this); + case 1: return !predicate.call(this, args[0]); + case 2: return !predicate.call(this, args[0], args[1]); + case 3: return !predicate.call(this, args[0], args[1], args[2]); + } + return !predicate.apply(this, args); + }; + } - // Reuse results - var jyd = jy.redAdd(jy); - for (var i = 0; i < pow; i++) { - var jx2 = jx.redSqr(); - var jyd2 = jyd.redSqr(); - var jyd4 = jyd2.redSqr(); - var c = jx2.redAdd(jx2).redIAdd(jx2).redIAdd(a.redMul(jz4)); + /** + * Creates a function that is restricted to invoking `func` once. Repeat calls + * to the function return the value of the first invocation. The `func` is + * invoked with the `this` binding and arguments of the created function. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Function + * @param {Function} func The function to restrict. + * @returns {Function} Returns the new restricted function. + * @example + * + * var initialize = _.once(createApplication); + * initialize(); + * initialize(); + * // => `createApplication` is invoked once + */ + function once(func) { + return before(2, func); + } - var t1 = jx.redMul(jyd2); - var nx = c.redSqr().redISub(t1.redAdd(t1)); - var t2 = t1.redISub(nx); - var dny = c.redMul(t2); - dny = dny.redIAdd(dny).redISub(jyd4); - var nz = jyd.redMul(jz); - if (i + 1 < pow) - jz4 = jz4.redMul(jyd4); + /** + * Creates a function that invokes `func` with its arguments transformed. + * + * @static + * @since 4.0.0 + * @memberOf _ + * @category Function + * @param {Function} func The function to wrap. + * @param {...(Function|Function[])} [transforms=[_.identity]] + * The argument transforms. + * @returns {Function} Returns the new function. + * @example + * + * function doubled(n) { + * return n * 2; + * } + * + * function square(n) { + * return n * n; + * } + * + * var func = _.overArgs(function(x, y) { + * return [x, y]; + * }, [square, doubled]); + * + * func(9, 3); + * // => [81, 6] + * + * func(10, 5); + * // => [100, 10] + */ + var overArgs = castRest(function(func, transforms) { + transforms = (transforms.length == 1 && isArray(transforms[0])) + ? arrayMap(transforms[0], baseUnary(getIteratee())) + : arrayMap(baseFlatten(transforms, 1), baseUnary(getIteratee())); - jx = nx; - jz = nz; - jyd = dny; - } + var funcsLength = transforms.length; + return baseRest(function(args) { + var index = -1, + length = nativeMin(args.length, funcsLength); - return this.curve.jpoint(jx, jyd.redMul(tinv), jz); -}; + while (++index < length) { + args[index] = transforms[index].call(this, args[index]); + } + return apply(func, this, args); + }); + }); -JPoint.prototype.dbl = function dbl() { - if (this.isInfinity()) - return this; + /** + * Creates a function that invokes `func` with `partials` prepended to the + * arguments it receives. This method is like `_.bind` except it does **not** + * alter the `this` binding. + * + * The `_.partial.placeholder` value, which defaults to `_` in monolithic + * builds, may be used as a placeholder for partially applied arguments. + * + * **Note:** This method doesn't set the "length" property of partially + * applied functions. + * + * @static + * @memberOf _ + * @since 0.2.0 + * @category Function + * @param {Function} func The function to partially apply arguments to. + * @param {...*} [partials] The arguments to be partially applied. + * @returns {Function} Returns the new partially applied function. + * @example + * + * function greet(greeting, name) { + * return greeting + ' ' + name; + * } + * + * var sayHelloTo = _.partial(greet, 'hello'); + * sayHelloTo('fred'); + * // => 'hello fred' + * + * // Partially applied with placeholders. + * var greetFred = _.partial(greet, _, 'fred'); + * greetFred('hi'); + * // => 'hi fred' + */ + var partial = baseRest(function(func, partials) { + var holders = replaceHolders(partials, getHolder(partial)); + return createWrap(func, WRAP_PARTIAL_FLAG, undefined, partials, holders); + }); - if (this.curve.zeroA) - return this._zeroDbl(); - else if (this.curve.threeA) - return this._threeDbl(); - else - return this._dbl(); -}; + /** + * This method is like `_.partial` except that partially applied arguments + * are appended to the arguments it receives. + * + * The `_.partialRight.placeholder` value, which defaults to `_` in monolithic + * builds, may be used as a placeholder for partially applied arguments. + * + * **Note:** This method doesn't set the "length" property of partially + * applied functions. + * + * @static + * @memberOf _ + * @since 1.0.0 + * @category Function + * @param {Function} func The function to partially apply arguments to. + * @param {...*} [partials] The arguments to be partially applied. + * @returns {Function} Returns the new partially applied function. + * @example + * + * function greet(greeting, name) { + * return greeting + ' ' + name; + * } + * + * var greetFred = _.partialRight(greet, 'fred'); + * greetFred('hi'); + * // => 'hi fred' + * + * // Partially applied with placeholders. + * var sayHelloTo = _.partialRight(greet, 'hello', _); + * sayHelloTo('fred'); + * // => 'hello fred' + */ + var partialRight = baseRest(function(func, partials) { + var holders = replaceHolders(partials, getHolder(partialRight)); + return createWrap(func, WRAP_PARTIAL_RIGHT_FLAG, undefined, partials, holders); + }); -JPoint.prototype._zeroDbl = function _zeroDbl() { - var nx; - var ny; - var nz; - // Z = 1 - if (this.zOne) { - // hyperelliptic.org/EFD/g1p/auto-shortw-jacobian-0.html - // #doubling-mdbl-2007-bl - // 1M + 5S + 14A + /** + * Creates a function that invokes `func` with arguments arranged according + * to the specified `indexes` where the argument value at the first index is + * provided as the first argument, the argument value at the second index is + * provided as the second argument, and so on. + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category Function + * @param {Function} func The function to rearrange arguments for. + * @param {...(number|number[])} indexes The arranged argument indexes. + * @returns {Function} Returns the new function. + * @example + * + * var rearged = _.rearg(function(a, b, c) { + * return [a, b, c]; + * }, [2, 0, 1]); + * + * rearged('b', 'c', 'a') + * // => ['a', 'b', 'c'] + */ + var rearg = flatRest(function(func, indexes) { + return createWrap(func, WRAP_REARG_FLAG, undefined, undefined, undefined, indexes); + }); - // XX = X1^2 - var xx = this.x.redSqr(); - // YY = Y1^2 - var yy = this.y.redSqr(); - // YYYY = YY^2 - var yyyy = yy.redSqr(); - // S = 2 * ((X1 + YY)^2 - XX - YYYY) - var s = this.x.redAdd(yy).redSqr().redISub(xx).redISub(yyyy); - s = s.redIAdd(s); - // M = 3 * XX + a; a = 0 - var m = xx.redAdd(xx).redIAdd(xx); - // T = M ^ 2 - 2*S - var t = m.redSqr().redISub(s).redISub(s); + /** + * Creates a function that invokes `func` with the `this` binding of the + * created function and arguments from `start` and beyond provided as + * an array. + * + * **Note:** This method is based on the + * [rest parameter](https://mdn.io/rest_parameters). + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Function + * @param {Function} func The function to apply a rest parameter to. + * @param {number} [start=func.length-1] The start position of the rest parameter. + * @returns {Function} Returns the new function. + * @example + * + * var say = _.rest(function(what, names) { + * return what + ' ' + _.initial(names).join(', ') + + * (_.size(names) > 1 ? ', & ' : '') + _.last(names); + * }); + * + * say('hello', 'fred', 'barney', 'pebbles'); + * // => 'hello fred, barney, & pebbles' + */ + function rest(func, start) { + if (typeof func != 'function') { + throw new TypeError(FUNC_ERROR_TEXT); + } + start = start === undefined ? start : toInteger(start); + return baseRest(func, start); + } - // 8 * YYYY - var yyyy8 = yyyy.redIAdd(yyyy); - yyyy8 = yyyy8.redIAdd(yyyy8); - yyyy8 = yyyy8.redIAdd(yyyy8); + /** + * Creates a function that invokes `func` with the `this` binding of the + * create function and an array of arguments much like + * [`Function#apply`](http://www.ecma-international.org/ecma-262/7.0/#sec-function.prototype.apply). + * + * **Note:** This method is based on the + * [spread operator](https://mdn.io/spread_operator). + * + * @static + * @memberOf _ + * @since 3.2.0 + * @category Function + * @param {Function} func The function to spread arguments over. + * @param {number} [start=0] The start position of the spread. + * @returns {Function} Returns the new function. + * @example + * + * var say = _.spread(function(who, what) { + * return who + ' says ' + what; + * }); + * + * say(['fred', 'hello']); + * // => 'fred says hello' + * + * var numbers = Promise.all([ + * Promise.resolve(40), + * Promise.resolve(36) + * ]); + * + * numbers.then(_.spread(function(x, y) { + * return x + y; + * })); + * // => a Promise of 76 + */ + function spread(func, start) { + if (typeof func != 'function') { + throw new TypeError(FUNC_ERROR_TEXT); + } + start = start == null ? 0 : nativeMax(toInteger(start), 0); + return baseRest(function(args) { + var array = args[start], + otherArgs = castSlice(args, 0, start); - // X3 = T - nx = t; - // Y3 = M * (S - T) - 8 * YYYY - ny = m.redMul(s.redISub(t)).redISub(yyyy8); - // Z3 = 2*Y1 - nz = this.y.redAdd(this.y); - } else { - // hyperelliptic.org/EFD/g1p/auto-shortw-jacobian-0.html - // #doubling-dbl-2009-l - // 2M + 5S + 13A + if (array) { + arrayPush(otherArgs, array); + } + return apply(func, this, otherArgs); + }); + } - // A = X1^2 - var a = this.x.redSqr(); - // B = Y1^2 - var b = this.y.redSqr(); - // C = B^2 - var c = b.redSqr(); - // D = 2 * ((X1 + B)^2 - A - C) - var d = this.x.redAdd(b).redSqr().redISub(a).redISub(c); - d = d.redIAdd(d); - // E = 3 * A - var e = a.redAdd(a).redIAdd(a); - // F = E^2 - var f = e.redSqr(); + /** + * Creates a throttled function that only invokes `func` at most once per + * every `wait` milliseconds. The throttled function comes with a `cancel` + * method to cancel delayed `func` invocations and a `flush` method to + * immediately invoke them. Provide `options` to indicate whether `func` + * should be invoked on the leading and/or trailing edge of the `wait` + * timeout. The `func` is invoked with the last arguments provided to the + * throttled function. Subsequent calls to the throttled function return the + * result of the last `func` invocation. + * + * **Note:** If `leading` and `trailing` options are `true`, `func` is + * invoked on the trailing edge of the timeout only if the throttled function + * is invoked more than once during the `wait` timeout. + * + * If `wait` is `0` and `leading` is `false`, `func` invocation is deferred + * until to the next tick, similar to `setTimeout` with a timeout of `0`. + * + * See [David Corbacho's article](https://css-tricks.com/debouncing-throttling-explained-examples/) + * for details over the differences between `_.throttle` and `_.debounce`. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Function + * @param {Function} func The function to throttle. + * @param {number} [wait=0] The number of milliseconds to throttle invocations to. + * @param {Object} [options={}] The options object. + * @param {boolean} [options.leading=true] + * Specify invoking on the leading edge of the timeout. + * @param {boolean} [options.trailing=true] + * Specify invoking on the trailing edge of the timeout. + * @returns {Function} Returns the new throttled function. + * @example + * + * // Avoid excessively updating the position while scrolling. + * jQuery(window).on('scroll', _.throttle(updatePosition, 100)); + * + * // Invoke `renewToken` when the click event is fired, but not more than once every 5 minutes. + * var throttled = _.throttle(renewToken, 300000, { 'trailing': false }); + * jQuery(element).on('click', throttled); + * + * // Cancel the trailing throttled invocation. + * jQuery(window).on('popstate', throttled.cancel); + */ + function throttle(func, wait, options) { + var leading = true, + trailing = true; - // 8 * C - var c8 = c.redIAdd(c); - c8 = c8.redIAdd(c8); - c8 = c8.redIAdd(c8); + if (typeof func != 'function') { + throw new TypeError(FUNC_ERROR_TEXT); + } + if (isObject(options)) { + leading = 'leading' in options ? !!options.leading : leading; + trailing = 'trailing' in options ? !!options.trailing : trailing; + } + return debounce(func, wait, { + 'leading': leading, + 'maxWait': wait, + 'trailing': trailing + }); + } - // X3 = F - 2 * D - nx = f.redISub(d).redISub(d); - // Y3 = E * (D - X3) - 8 * C - ny = e.redMul(d.redISub(nx)).redISub(c8); - // Z3 = 2 * Y1 * Z1 - nz = this.y.redMul(this.z); - nz = nz.redIAdd(nz); - } + /** + * Creates a function that accepts up to one argument, ignoring any + * additional arguments. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Function + * @param {Function} func The function to cap arguments for. + * @returns {Function} Returns the new capped function. + * @example + * + * _.map(['6', '8', '10'], _.unary(parseInt)); + * // => [6, 8, 10] + */ + function unary(func) { + return ary(func, 1); + } - return this.curve.jpoint(nx, ny, nz); -}; + /** + * Creates a function that provides `value` to `wrapper` as its first + * argument. Any additional arguments provided to the function are appended + * to those provided to the `wrapper`. The wrapper is invoked with the `this` + * binding of the created function. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Function + * @param {*} value The value to wrap. + * @param {Function} [wrapper=identity] The wrapper function. + * @returns {Function} Returns the new function. + * @example + * + * var p = _.wrap(_.escape, function(func, text) { + * return '

' + func(text) + '

'; + * }); + * + * p('fred, barney, & pebbles'); + * // => '

fred, barney, & pebbles

' + */ + function wrap(value, wrapper) { + return partial(castFunction(wrapper), value); + } -JPoint.prototype._threeDbl = function _threeDbl() { - var nx; - var ny; - var nz; - // Z = 1 - if (this.zOne) { - // hyperelliptic.org/EFD/g1p/auto-shortw-jacobian-3.html - // #doubling-mdbl-2007-bl - // 1M + 5S + 15A + /*------------------------------------------------------------------------*/ - // XX = X1^2 - var xx = this.x.redSqr(); - // YY = Y1^2 - var yy = this.y.redSqr(); - // YYYY = YY^2 - var yyyy = yy.redSqr(); - // S = 2 * ((X1 + YY)^2 - XX - YYYY) - var s = this.x.redAdd(yy).redSqr().redISub(xx).redISub(yyyy); - s = s.redIAdd(s); - // M = 3 * XX + a - var m = xx.redAdd(xx).redIAdd(xx).redIAdd(this.curve.a); - // T = M^2 - 2 * S - var t = m.redSqr().redISub(s).redISub(s); - // X3 = T - nx = t; - // Y3 = M * (S - T) - 8 * YYYY - var yyyy8 = yyyy.redIAdd(yyyy); - yyyy8 = yyyy8.redIAdd(yyyy8); - yyyy8 = yyyy8.redIAdd(yyyy8); - ny = m.redMul(s.redISub(t)).redISub(yyyy8); - // Z3 = 2 * Y1 - nz = this.y.redAdd(this.y); - } else { - // hyperelliptic.org/EFD/g1p/auto-shortw-jacobian-3.html#doubling-dbl-2001-b - // 3M + 5S + /** + * Casts `value` as an array if it's not one. + * + * @static + * @memberOf _ + * @since 4.4.0 + * @category Lang + * @param {*} value The value to inspect. + * @returns {Array} Returns the cast array. + * @example + * + * _.castArray(1); + * // => [1] + * + * _.castArray({ 'a': 1 }); + * // => [{ 'a': 1 }] + * + * _.castArray('abc'); + * // => ['abc'] + * + * _.castArray(null); + * // => [null] + * + * _.castArray(undefined); + * // => [undefined] + * + * _.castArray(); + * // => [] + * + * var array = [1, 2, 3]; + * console.log(_.castArray(array) === array); + * // => true + */ + function castArray() { + if (!arguments.length) { + return []; + } + var value = arguments[0]; + return isArray(value) ? value : [value]; + } - // delta = Z1^2 - var delta = this.z.redSqr(); - // gamma = Y1^2 - var gamma = this.y.redSqr(); - // beta = X1 * gamma - var beta = this.x.redMul(gamma); - // alpha = 3 * (X1 - delta) * (X1 + delta) - var alpha = this.x.redSub(delta).redMul(this.x.redAdd(delta)); - alpha = alpha.redAdd(alpha).redIAdd(alpha); - // X3 = alpha^2 - 8 * beta - var beta4 = beta.redIAdd(beta); - beta4 = beta4.redIAdd(beta4); - var beta8 = beta4.redAdd(beta4); - nx = alpha.redSqr().redISub(beta8); - // Z3 = (Y1 + Z1)^2 - gamma - delta - nz = this.y.redAdd(this.z).redSqr().redISub(gamma).redISub(delta); - // Y3 = alpha * (4 * beta - X3) - 8 * gamma^2 - var ggamma8 = gamma.redSqr(); - ggamma8 = ggamma8.redIAdd(ggamma8); - ggamma8 = ggamma8.redIAdd(ggamma8); - ggamma8 = ggamma8.redIAdd(ggamma8); - ny = alpha.redMul(beta4.redISub(nx)).redISub(ggamma8); - } + /** + * Creates a shallow clone of `value`. + * + * **Note:** This method is loosely based on the + * [structured clone algorithm](https://mdn.io/Structured_clone_algorithm) + * and supports cloning arrays, array buffers, booleans, date objects, maps, + * numbers, `Object` objects, regexes, sets, strings, symbols, and typed + * arrays. The own enumerable properties of `arguments` objects are cloned + * as plain objects. An empty object is returned for uncloneable values such + * as error objects, functions, DOM nodes, and WeakMaps. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Lang + * @param {*} value The value to clone. + * @returns {*} Returns the cloned value. + * @see _.cloneDeep + * @example + * + * var objects = [{ 'a': 1 }, { 'b': 2 }]; + * + * var shallow = _.clone(objects); + * console.log(shallow[0] === objects[0]); + * // => true + */ + function clone(value) { + return baseClone(value, CLONE_SYMBOLS_FLAG); + } - return this.curve.jpoint(nx, ny, nz); -}; + /** + * This method is like `_.clone` except that it accepts `customizer` which + * is invoked to produce the cloned value. If `customizer` returns `undefined`, + * cloning is handled by the method instead. The `customizer` is invoked with + * up to four arguments; (value [, index|key, object, stack]). + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Lang + * @param {*} value The value to clone. + * @param {Function} [customizer] The function to customize cloning. + * @returns {*} Returns the cloned value. + * @see _.cloneDeepWith + * @example + * + * function customizer(value) { + * if (_.isElement(value)) { + * return value.cloneNode(false); + * } + * } + * + * var el = _.cloneWith(document.body, customizer); + * + * console.log(el === document.body); + * // => false + * console.log(el.nodeName); + * // => 'BODY' + * console.log(el.childNodes.length); + * // => 0 + */ + function cloneWith(value, customizer) { + customizer = typeof customizer == 'function' ? customizer : undefined; + return baseClone(value, CLONE_SYMBOLS_FLAG, customizer); + } -JPoint.prototype._dbl = function _dbl() { - var a = this.curve.a; + /** + * This method is like `_.clone` except that it recursively clones `value`. + * + * @static + * @memberOf _ + * @since 1.0.0 + * @category Lang + * @param {*} value The value to recursively clone. + * @returns {*} Returns the deep cloned value. + * @see _.clone + * @example + * + * var objects = [{ 'a': 1 }, { 'b': 2 }]; + * + * var deep = _.cloneDeep(objects); + * console.log(deep[0] === objects[0]); + * // => false + */ + function cloneDeep(value) { + return baseClone(value, CLONE_DEEP_FLAG | CLONE_SYMBOLS_FLAG); + } - // 4M + 6S + 10A - var jx = this.x; - var jy = this.y; - var jz = this.z; - var jz4 = jz.redSqr().redSqr(); + /** + * This method is like `_.cloneWith` except that it recursively clones `value`. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Lang + * @param {*} value The value to recursively clone. + * @param {Function} [customizer] The function to customize cloning. + * @returns {*} Returns the deep cloned value. + * @see _.cloneWith + * @example + * + * function customizer(value) { + * if (_.isElement(value)) { + * return value.cloneNode(true); + * } + * } + * + * var el = _.cloneDeepWith(document.body, customizer); + * + * console.log(el === document.body); + * // => false + * console.log(el.nodeName); + * // => 'BODY' + * console.log(el.childNodes.length); + * // => 20 + */ + function cloneDeepWith(value, customizer) { + customizer = typeof customizer == 'function' ? customizer : undefined; + return baseClone(value, CLONE_DEEP_FLAG | CLONE_SYMBOLS_FLAG, customizer); + } - var jx2 = jx.redSqr(); - var jy2 = jy.redSqr(); + /** + * Checks if `object` conforms to `source` by invoking the predicate + * properties of `source` with the corresponding property values of `object`. + * + * **Note:** This method is equivalent to `_.conforms` when `source` is + * partially applied. + * + * @static + * @memberOf _ + * @since 4.14.0 + * @category Lang + * @param {Object} object The object to inspect. + * @param {Object} source The object of property predicates to conform to. + * @returns {boolean} Returns `true` if `object` conforms, else `false`. + * @example + * + * var object = { 'a': 1, 'b': 2 }; + * + * _.conformsTo(object, { 'b': function(n) { return n > 1; } }); + * // => true + * + * _.conformsTo(object, { 'b': function(n) { return n > 2; } }); + * // => false + */ + function conformsTo(object, source) { + return source == null || baseConformsTo(object, source, keys(source)); + } - var c = jx2.redAdd(jx2).redIAdd(jx2).redIAdd(a.redMul(jz4)); + /** + * Performs a + * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero) + * comparison between two values to determine if they are equivalent. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Lang + * @param {*} value The value to compare. + * @param {*} other The other value to compare. + * @returns {boolean} Returns `true` if the values are equivalent, else `false`. + * @example + * + * var object = { 'a': 1 }; + * var other = { 'a': 1 }; + * + * _.eq(object, object); + * // => true + * + * _.eq(object, other); + * // => false + * + * _.eq('a', 'a'); + * // => true + * + * _.eq('a', Object('a')); + * // => false + * + * _.eq(NaN, NaN); + * // => true + */ + function eq(value, other) { + return value === other || (value !== value && other !== other); + } - var jxd4 = jx.redAdd(jx); - jxd4 = jxd4.redIAdd(jxd4); - var t1 = jxd4.redMul(jy2); - var nx = c.redSqr().redISub(t1.redAdd(t1)); - var t2 = t1.redISub(nx); + /** + * Checks if `value` is greater than `other`. + * + * @static + * @memberOf _ + * @since 3.9.0 + * @category Lang + * @param {*} value The value to compare. + * @param {*} other The other value to compare. + * @returns {boolean} Returns `true` if `value` is greater than `other`, + * else `false`. + * @see _.lt + * @example + * + * _.gt(3, 1); + * // => true + * + * _.gt(3, 3); + * // => false + * + * _.gt(1, 3); + * // => false + */ + var gt = createRelationalOperation(baseGt); - var jyd8 = jy2.redSqr(); - jyd8 = jyd8.redIAdd(jyd8); - jyd8 = jyd8.redIAdd(jyd8); - jyd8 = jyd8.redIAdd(jyd8); - var ny = c.redMul(t2).redISub(jyd8); - var nz = jy.redAdd(jy).redMul(jz); + /** + * Checks if `value` is greater than or equal to `other`. + * + * @static + * @memberOf _ + * @since 3.9.0 + * @category Lang + * @param {*} value The value to compare. + * @param {*} other The other value to compare. + * @returns {boolean} Returns `true` if `value` is greater than or equal to + * `other`, else `false`. + * @see _.lte + * @example + * + * _.gte(3, 1); + * // => true + * + * _.gte(3, 3); + * // => true + * + * _.gte(1, 3); + * // => false + */ + var gte = createRelationalOperation(function(value, other) { + return value >= other; + }); - return this.curve.jpoint(nx, ny, nz); -}; + /** + * Checks if `value` is likely an `arguments` object. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is an `arguments` object, + * else `false`. + * @example + * + * _.isArguments(function() { return arguments; }()); + * // => true + * + * _.isArguments([1, 2, 3]); + * // => false + */ + var isArguments = baseIsArguments(function() { return arguments; }()) ? baseIsArguments : function(value) { + return isObjectLike(value) && hasOwnProperty.call(value, 'callee') && + !propertyIsEnumerable.call(value, 'callee'); + }; -JPoint.prototype.trpl = function trpl() { - if (!this.curve.zeroA) - return this.dbl().add(this); + /** + * Checks if `value` is classified as an `Array` object. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is an array, else `false`. + * @example + * + * _.isArray([1, 2, 3]); + * // => true + * + * _.isArray(document.body.children); + * // => false + * + * _.isArray('abc'); + * // => false + * + * _.isArray(_.noop); + * // => false + */ + var isArray = Array.isArray; - // hyperelliptic.org/EFD/g1p/auto-shortw-jacobian-0.html#tripling-tpl-2007-bl - // 5M + 10S + ... + /** + * Checks if `value` is classified as an `ArrayBuffer` object. + * + * @static + * @memberOf _ + * @since 4.3.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is an array buffer, else `false`. + * @example + * + * _.isArrayBuffer(new ArrayBuffer(2)); + * // => true + * + * _.isArrayBuffer(new Array(2)); + * // => false + */ + var isArrayBuffer = nodeIsArrayBuffer ? baseUnary(nodeIsArrayBuffer) : baseIsArrayBuffer; - // XX = X1^2 - var xx = this.x.redSqr(); - // YY = Y1^2 - var yy = this.y.redSqr(); - // ZZ = Z1^2 - var zz = this.z.redSqr(); - // YYYY = YY^2 - var yyyy = yy.redSqr(); - // M = 3 * XX + a * ZZ2; a = 0 - var m = xx.redAdd(xx).redIAdd(xx); - // MM = M^2 - var mm = m.redSqr(); - // E = 6 * ((X1 + YY)^2 - XX - YYYY) - MM - var e = this.x.redAdd(yy).redSqr().redISub(xx).redISub(yyyy); - e = e.redIAdd(e); - e = e.redAdd(e).redIAdd(e); - e = e.redISub(mm); - // EE = E^2 - var ee = e.redSqr(); - // T = 16*YYYY - var t = yyyy.redIAdd(yyyy); - t = t.redIAdd(t); - t = t.redIAdd(t); - t = t.redIAdd(t); - // U = (M + E)^2 - MM - EE - T - var u = m.redIAdd(e).redSqr().redISub(mm).redISub(ee).redISub(t); - // X3 = 4 * (X1 * EE - 4 * YY * U) - var yyu4 = yy.redMul(u); - yyu4 = yyu4.redIAdd(yyu4); - yyu4 = yyu4.redIAdd(yyu4); - var nx = this.x.redMul(ee).redISub(yyu4); - nx = nx.redIAdd(nx); - nx = nx.redIAdd(nx); - // Y3 = 8 * Y1 * (U * (T - U) - E * EE) - var ny = this.y.redMul(u.redMul(t.redISub(u)).redISub(e.redMul(ee))); - ny = ny.redIAdd(ny); - ny = ny.redIAdd(ny); - ny = ny.redIAdd(ny); - // Z3 = (Z1 + E)^2 - ZZ - EE - var nz = this.z.redAdd(e).redSqr().redISub(zz).redISub(ee); + /** + * Checks if `value` is array-like. A value is considered array-like if it's + * not a function and has a `value.length` that's an integer greater than or + * equal to `0` and less than or equal to `Number.MAX_SAFE_INTEGER`. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is array-like, else `false`. + * @example + * + * _.isArrayLike([1, 2, 3]); + * // => true + * + * _.isArrayLike(document.body.children); + * // => true + * + * _.isArrayLike('abc'); + * // => true + * + * _.isArrayLike(_.noop); + * // => false + */ + function isArrayLike(value) { + return value != null && isLength(value.length) && !isFunction(value); + } - return this.curve.jpoint(nx, ny, nz); -}; + /** + * This method is like `_.isArrayLike` except that it also checks if `value` + * is an object. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is an array-like object, + * else `false`. + * @example + * + * _.isArrayLikeObject([1, 2, 3]); + * // => true + * + * _.isArrayLikeObject(document.body.children); + * // => true + * + * _.isArrayLikeObject('abc'); + * // => false + * + * _.isArrayLikeObject(_.noop); + * // => false + */ + function isArrayLikeObject(value) { + return isObjectLike(value) && isArrayLike(value); + } -JPoint.prototype.mul = function mul(k, kbase) { - k = new BN(k, kbase); + /** + * Checks if `value` is classified as a boolean primitive or object. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is a boolean, else `false`. + * @example + * + * _.isBoolean(false); + * // => true + * + * _.isBoolean(null); + * // => false + */ + function isBoolean(value) { + return value === true || value === false || + (isObjectLike(value) && baseGetTag(value) == boolTag); + } - return this.curve._wnafMul(this, k); -}; + /** + * Checks if `value` is a buffer. + * + * @static + * @memberOf _ + * @since 4.3.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is a buffer, else `false`. + * @example + * + * _.isBuffer(new Buffer(2)); + * // => true + * + * _.isBuffer(new Uint8Array(2)); + * // => false + */ + var isBuffer = nativeIsBuffer || stubFalse; -JPoint.prototype.eq = function eq(p) { - if (p.type === 'affine') - return this.eq(p.toJ()); + /** + * Checks if `value` is classified as a `Date` object. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is a date object, else `false`. + * @example + * + * _.isDate(new Date); + * // => true + * + * _.isDate('Mon April 23 2012'); + * // => false + */ + var isDate = nodeIsDate ? baseUnary(nodeIsDate) : baseIsDate; - if (this === p) - return true; + /** + * Checks if `value` is likely a DOM element. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is a DOM element, else `false`. + * @example + * + * _.isElement(document.body); + * // => true + * + * _.isElement(''); + * // => false + */ + function isElement(value) { + return isObjectLike(value) && value.nodeType === 1 && !isPlainObject(value); + } - // x1 * z2^2 == x2 * z1^2 - var z2 = this.z.redSqr(); - var pz2 = p.z.redSqr(); - if (this.x.redMul(pz2).redISub(p.x.redMul(z2)).cmpn(0) !== 0) - return false; + /** + * Checks if `value` is an empty object, collection, map, or set. + * + * Objects are considered empty if they have no own enumerable string keyed + * properties. + * + * Array-like values such as `arguments` objects, arrays, buffers, strings, or + * jQuery-like collections are considered empty if they have a `length` of `0`. + * Similarly, maps and sets are considered empty if they have a `size` of `0`. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is empty, else `false`. + * @example + * + * _.isEmpty(null); + * // => true + * + * _.isEmpty(true); + * // => true + * + * _.isEmpty(1); + * // => true + * + * _.isEmpty([1, 2, 3]); + * // => false + * + * _.isEmpty({ 'a': 1 }); + * // => false + */ + function isEmpty(value) { + if (value == null) { + return true; + } + if (isArrayLike(value) && + (isArray(value) || typeof value == 'string' || typeof value.splice == 'function' || + isBuffer(value) || isTypedArray(value) || isArguments(value))) { + return !value.length; + } + var tag = getTag(value); + if (tag == mapTag || tag == setTag) { + return !value.size; + } + if (isPrototype(value)) { + return !baseKeys(value).length; + } + for (var key in value) { + if (hasOwnProperty.call(value, key)) { + return false; + } + } + return true; + } - // y1 * z2^3 == y2 * z1^3 - var z3 = z2.redMul(this.z); - var pz3 = pz2.redMul(p.z); - return this.y.redMul(pz3).redISub(p.y.redMul(z3)).cmpn(0) === 0; -}; + /** + * Performs a deep comparison between two values to determine if they are + * equivalent. + * + * **Note:** This method supports comparing arrays, array buffers, booleans, + * date objects, error objects, maps, numbers, `Object` objects, regexes, + * sets, strings, symbols, and typed arrays. `Object` objects are compared + * by their own, not inherited, enumerable properties. Functions and DOM + * nodes are compared by strict equality, i.e. `===`. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Lang + * @param {*} value The value to compare. + * @param {*} other The other value to compare. + * @returns {boolean} Returns `true` if the values are equivalent, else `false`. + * @example + * + * var object = { 'a': 1 }; + * var other = { 'a': 1 }; + * + * _.isEqual(object, other); + * // => true + * + * object === other; + * // => false + */ + function isEqual(value, other) { + return baseIsEqual(value, other); + } -JPoint.prototype.eqXToP = function eqXToP(x) { - var zs = this.z.redSqr(); - var rx = x.toRed(this.curve.red).redMul(zs); - if (this.x.cmp(rx) === 0) - return true; + /** + * This method is like `_.isEqual` except that it accepts `customizer` which + * is invoked to compare values. If `customizer` returns `undefined`, comparisons + * are handled by the method instead. The `customizer` is invoked with up to + * six arguments: (objValue, othValue [, index|key, object, other, stack]). + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Lang + * @param {*} value The value to compare. + * @param {*} other The other value to compare. + * @param {Function} [customizer] The function to customize comparisons. + * @returns {boolean} Returns `true` if the values are equivalent, else `false`. + * @example + * + * function isGreeting(value) { + * return /^h(?:i|ello)$/.test(value); + * } + * + * function customizer(objValue, othValue) { + * if (isGreeting(objValue) && isGreeting(othValue)) { + * return true; + * } + * } + * + * var array = ['hello', 'goodbye']; + * var other = ['hi', 'goodbye']; + * + * _.isEqualWith(array, other, customizer); + * // => true + */ + function isEqualWith(value, other, customizer) { + customizer = typeof customizer == 'function' ? customizer : undefined; + var result = customizer ? customizer(value, other) : undefined; + return result === undefined ? baseIsEqual(value, other, undefined, customizer) : !!result; + } - var xc = x.clone(); - var t = this.curve.redN.redMul(zs); - for (;;) { - xc.iadd(this.curve.n); - if (xc.cmp(this.curve.p) >= 0) - return false; + /** + * Checks if `value` is an `Error`, `EvalError`, `RangeError`, `ReferenceError`, + * `SyntaxError`, `TypeError`, or `URIError` object. + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is an error object, else `false`. + * @example + * + * _.isError(new Error); + * // => true + * + * _.isError(Error); + * // => false + */ + function isError(value) { + if (!isObjectLike(value)) { + return false; + } + var tag = baseGetTag(value); + return tag == errorTag || tag == domExcTag || + (typeof value.message == 'string' && typeof value.name == 'string' && !isPlainObject(value)); + } - rx.redIAdd(t); - if (this.x.cmp(rx) === 0) - return true; - } - return false; -}; + /** + * Checks if `value` is a finite primitive number. + * + * **Note:** This method is based on + * [`Number.isFinite`](https://mdn.io/Number/isFinite). + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is a finite number, else `false`. + * @example + * + * _.isFinite(3); + * // => true + * + * _.isFinite(Number.MIN_VALUE); + * // => true + * + * _.isFinite(Infinity); + * // => false + * + * _.isFinite('3'); + * // => false + */ + function isFinite(value) { + return typeof value == 'number' && nativeIsFinite(value); + } -JPoint.prototype.inspect = function inspect() { - if (this.isInfinity()) - return ''; - return ''; -}; + /** + * Checks if `value` is classified as a `Function` object. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is a function, else `false`. + * @example + * + * _.isFunction(_); + * // => true + * + * _.isFunction(/abc/); + * // => false + */ + function isFunction(value) { + if (!isObject(value)) { + return false; + } + // The use of `Object#toString` avoids issues with the `typeof` operator + // in Safari 9 which returns 'object' for typed arrays and other constructors. + var tag = baseGetTag(value); + return tag == funcTag || tag == genTag || tag == asyncTag || tag == proxyTag; + } -JPoint.prototype.isInfinity = function isInfinity() { - // XXX This code assumes that zero is always zero in red - return this.z.cmpn(0) === 0; -}; + /** + * Checks if `value` is an integer. + * + * **Note:** This method is based on + * [`Number.isInteger`](https://mdn.io/Number/isInteger). + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is an integer, else `false`. + * @example + * + * _.isInteger(3); + * // => true + * + * _.isInteger(Number.MIN_VALUE); + * // => false + * + * _.isInteger(Infinity); + * // => false + * + * _.isInteger('3'); + * // => false + */ + function isInteger(value) { + return typeof value == 'number' && value == toInteger(value); + } -},{"../../elliptic":214,"../curve":217,"bn.js":210,"inherits":244}],220:[function(require,module,exports){ -arguments[4][77][0].apply(exports,arguments) -},{"../elliptic":214,"./precomputed/secp256k1":227,"dup":77,"hash.js":230}],221:[function(require,module,exports){ -arguments[4][78][0].apply(exports,arguments) -},{"../../elliptic":214,"./key":222,"./signature":223,"bn.js":210,"dup":78,"hmac-drbg":243}],222:[function(require,module,exports){ -arguments[4][79][0].apply(exports,arguments) -},{"../../elliptic":214,"bn.js":210,"dup":79}],223:[function(require,module,exports){ -arguments[4][80][0].apply(exports,arguments) -},{"../../elliptic":214,"bn.js":210,"dup":80}],224:[function(require,module,exports){ -arguments[4][81][0].apply(exports,arguments) -},{"../../elliptic":214,"./key":225,"./signature":226,"dup":81,"hash.js":230}],225:[function(require,module,exports){ -arguments[4][82][0].apply(exports,arguments) -},{"../../elliptic":214,"dup":82}],226:[function(require,module,exports){ -arguments[4][83][0].apply(exports,arguments) -},{"../../elliptic":214,"bn.js":210,"dup":83}],227:[function(require,module,exports){ -arguments[4][84][0].apply(exports,arguments) -},{"dup":84}],228:[function(require,module,exports){ -arguments[4][85][0].apply(exports,arguments) -},{"bn.js":210,"dup":85,"minimalistic-assert":246,"minimalistic-crypto-utils":247}],229:[function(require,module,exports){ -module.exports={ - "_args": [ - [ - "elliptic@6.4.0", - "/Users/justin/repos/bitcore/packages/bitcore-lib" - ] - ], - "_from": "elliptic@6.4.0", - "_id": "elliptic@6.4.0", - "_inBundle": false, - "_integrity": "sha1-ysmvh2LIWDYYcAPI3+GT5eLq5d8=", - "_location": "/elliptic", - "_phantomChildren": {}, - "_requested": { - "type": "version", - "registry": true, - "raw": "elliptic@6.4.0", - "name": "elliptic", - "escapedName": "elliptic", - "rawSpec": "6.4.0", - "saveSpec": null, - "fetchSpec": "6.4.0" - }, - "_requiredBy": [ - "/", - "/browserify-sign", - "/create-ecdh" - ], - "_resolved": "https://registry.npmjs.org/elliptic/-/elliptic-6.4.0.tgz", - "_spec": "6.4.0", - "_where": "/Users/justin/repos/bitcore/packages/bitcore-lib", - "author": { - "name": "Fedor Indutny", - "email": "fedor@indutny.com" - }, - "bugs": { - "url": "https://github.com/indutny/elliptic/issues" - }, - "dependencies": { - "bn.js": "^4.4.0", - "brorand": "^1.0.1", - "hash.js": "^1.0.0", - "hmac-drbg": "^1.0.0", - "inherits": "^2.0.1", - "minimalistic-assert": "^1.0.0", - "minimalistic-crypto-utils": "^1.0.0" - }, - "description": "EC cryptography", - "devDependencies": { - "brfs": "^1.4.3", - "coveralls": "^2.11.3", - "grunt": "^0.4.5", - "grunt-browserify": "^5.0.0", - "grunt-cli": "^1.2.0", - "grunt-contrib-connect": "^1.0.0", - "grunt-contrib-copy": "^1.0.0", - "grunt-contrib-uglify": "^1.0.1", - "grunt-mocha-istanbul": "^3.0.1", - "grunt-saucelabs": "^8.6.2", - "istanbul": "^0.4.2", - "jscs": "^2.9.0", - "jshint": "^2.6.0", - "mocha": "^2.1.0" - }, - "files": [ - "lib" - ], - "homepage": "https://github.com/indutny/elliptic", - "keywords": [ - "EC", - "Elliptic", - "curve", - "Cryptography" - ], - "license": "MIT", - "main": "lib/elliptic.js", - "name": "elliptic", - "repository": { - "type": "git", - "url": "git+ssh://git@github.com/indutny/elliptic.git" - }, - "scripts": { - "jscs": "jscs benchmarks/*.js lib/*.js lib/**/*.js lib/**/**/*.js test/index.js", - "jshint": "jscs benchmarks/*.js lib/*.js lib/**/*.js lib/**/**/*.js test/index.js", - "lint": "npm run jscs && npm run jshint", - "test": "npm run lint && npm run unit", - "unit": "istanbul test _mocha --reporter=spec test/index.js", - "version": "grunt dist && git add dist/" - }, - "version": "6.4.0" -} + /** + * Checks if `value` is a valid array-like length. + * + * **Note:** This method is loosely based on + * [`ToLength`](http://ecma-international.org/ecma-262/7.0/#sec-tolength). + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is a valid length, else `false`. + * @example + * + * _.isLength(3); + * // => true + * + * _.isLength(Number.MIN_VALUE); + * // => false + * + * _.isLength(Infinity); + * // => false + * + * _.isLength('3'); + * // => false + */ + function isLength(value) { + return typeof value == 'number' && + value > -1 && value % 1 == 0 && value <= MAX_SAFE_INTEGER; + } -},{}],230:[function(require,module,exports){ -arguments[4][90][0].apply(exports,arguments) -},{"./hash/common":231,"./hash/hmac":232,"./hash/ripemd":233,"./hash/sha":234,"./hash/utils":241,"dup":90}],231:[function(require,module,exports){ -arguments[4][91][0].apply(exports,arguments) -},{"./utils":241,"dup":91,"minimalistic-assert":246}],232:[function(require,module,exports){ -arguments[4][92][0].apply(exports,arguments) -},{"./utils":241,"dup":92,"minimalistic-assert":246}],233:[function(require,module,exports){ -arguments[4][93][0].apply(exports,arguments) -},{"./common":231,"./utils":241,"dup":93}],234:[function(require,module,exports){ -arguments[4][94][0].apply(exports,arguments) -},{"./sha/1":235,"./sha/224":236,"./sha/256":237,"./sha/384":238,"./sha/512":239,"dup":94}],235:[function(require,module,exports){ -arguments[4][95][0].apply(exports,arguments) -},{"../common":231,"../utils":241,"./common":240,"dup":95}],236:[function(require,module,exports){ -arguments[4][96][0].apply(exports,arguments) -},{"../utils":241,"./256":237,"dup":96}],237:[function(require,module,exports){ -arguments[4][97][0].apply(exports,arguments) -},{"../common":231,"../utils":241,"./common":240,"dup":97,"minimalistic-assert":246}],238:[function(require,module,exports){ -arguments[4][98][0].apply(exports,arguments) -},{"../utils":241,"./512":239,"dup":98}],239:[function(require,module,exports){ -arguments[4][99][0].apply(exports,arguments) -},{"../common":231,"../utils":241,"dup":99,"minimalistic-assert":246}],240:[function(require,module,exports){ -arguments[4][100][0].apply(exports,arguments) -},{"../utils":241,"dup":100}],241:[function(require,module,exports){ -'use strict'; + /** + * Checks if `value` is the + * [language type](http://www.ecma-international.org/ecma-262/7.0/#sec-ecmascript-language-types) + * of `Object`. (e.g. arrays, functions, objects, regexes, `new Number(0)`, and `new String('')`) + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is an object, else `false`. + * @example + * + * _.isObject({}); + * // => true + * + * _.isObject([1, 2, 3]); + * // => true + * + * _.isObject(_.noop); + * // => true + * + * _.isObject(null); + * // => false + */ + function isObject(value) { + var type = typeof value; + return value != null && (type == 'object' || type == 'function'); + } -var assert = require('minimalistic-assert'); -var inherits = require('inherits'); + /** + * Checks if `value` is object-like. A value is object-like if it's not `null` + * and has a `typeof` result of "object". + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is object-like, else `false`. + * @example + * + * _.isObjectLike({}); + * // => true + * + * _.isObjectLike([1, 2, 3]); + * // => true + * + * _.isObjectLike(_.noop); + * // => false + * + * _.isObjectLike(null); + * // => false + */ + function isObjectLike(value) { + return value != null && typeof value == 'object'; + } -exports.inherits = inherits; + /** + * Checks if `value` is classified as a `Map` object. + * + * @static + * @memberOf _ + * @since 4.3.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is a map, else `false`. + * @example + * + * _.isMap(new Map); + * // => true + * + * _.isMap(new WeakMap); + * // => false + */ + var isMap = nodeIsMap ? baseUnary(nodeIsMap) : baseIsMap; -function isSurrogatePair(msg, i) { - if ((msg.charCodeAt(i) & 0xFC00) !== 0xD800) { - return false; - } - if (i < 0 || i + 1 >= msg.length) { - return false; - } - return (msg.charCodeAt(i + 1) & 0xFC00) === 0xDC00; -} + /** + * Performs a partial deep comparison between `object` and `source` to + * determine if `object` contains equivalent property values. + * + * **Note:** This method is equivalent to `_.matches` when `source` is + * partially applied. + * + * Partial comparisons will match empty array and empty object `source` + * values against any array or object value, respectively. See `_.isEqual` + * for a list of supported value comparisons. + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category Lang + * @param {Object} object The object to inspect. + * @param {Object} source The object of property values to match. + * @returns {boolean} Returns `true` if `object` is a match, else `false`. + * @example + * + * var object = { 'a': 1, 'b': 2 }; + * + * _.isMatch(object, { 'b': 2 }); + * // => true + * + * _.isMatch(object, { 'b': 1 }); + * // => false + */ + function isMatch(object, source) { + return object === source || baseIsMatch(object, source, getMatchData(source)); + } -function toArray(msg, enc) { - if (Array.isArray(msg)) - return msg.slice(); - if (!msg) - return []; - var res = []; - if (typeof msg === 'string') { - if (!enc) { - // Inspired by stringToUtf8ByteArray() in closure-library by Google - // https://github.com/google/closure-library/blob/8598d87242af59aac233270742c8984e2b2bdbe0/closure/goog/crypt/crypt.js#L117-L143 - // Apache License 2.0 - // https://github.com/google/closure-library/blob/master/LICENSE - var p = 0; - for (var i = 0; i < msg.length; i++) { - var c = msg.charCodeAt(i); - if (c < 128) { - res[p++] = c; - } else if (c < 2048) { - res[p++] = (c >> 6) | 192; - res[p++] = (c & 63) | 128; - } else if (isSurrogatePair(msg, i)) { - c = 0x10000 + ((c & 0x03FF) << 10) + (msg.charCodeAt(++i) & 0x03FF); - res[p++] = (c >> 18) | 240; - res[p++] = ((c >> 12) & 63) | 128; - res[p++] = ((c >> 6) & 63) | 128; - res[p++] = (c & 63) | 128; - } else { - res[p++] = (c >> 12) | 224; - res[p++] = ((c >> 6) & 63) | 128; - res[p++] = (c & 63) | 128; - } - } - } else if (enc === 'hex') { - msg = msg.replace(/[^a-z0-9]+/ig, ''); - if (msg.length % 2 !== 0) - msg = '0' + msg; - for (i = 0; i < msg.length; i += 2) - res.push(parseInt(msg[i] + msg[i + 1], 16)); + /** + * This method is like `_.isMatch` except that it accepts `customizer` which + * is invoked to compare values. If `customizer` returns `undefined`, comparisons + * are handled by the method instead. The `customizer` is invoked with five + * arguments: (objValue, srcValue, index|key, object, source). + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Lang + * @param {Object} object The object to inspect. + * @param {Object} source The object of property values to match. + * @param {Function} [customizer] The function to customize comparisons. + * @returns {boolean} Returns `true` if `object` is a match, else `false`. + * @example + * + * function isGreeting(value) { + * return /^h(?:i|ello)$/.test(value); + * } + * + * function customizer(objValue, srcValue) { + * if (isGreeting(objValue) && isGreeting(srcValue)) { + * return true; + * } + * } + * + * var object = { 'greeting': 'hello' }; + * var source = { 'greeting': 'hi' }; + * + * _.isMatchWith(object, source, customizer); + * // => true + */ + function isMatchWith(object, source, customizer) { + customizer = typeof customizer == 'function' ? customizer : undefined; + return baseIsMatch(object, source, getMatchData(source), customizer); } - } else { - for (i = 0; i < msg.length; i++) - res[i] = msg[i] | 0; - } - return res; -} -exports.toArray = toArray; - -function toHex(msg) { - var res = ''; - for (var i = 0; i < msg.length; i++) - res += zero2(msg[i].toString(16)); - return res; -} -exports.toHex = toHex; - -function htonl(w) { - var res = (w >>> 24) | - ((w >>> 8) & 0xff00) | - ((w << 8) & 0xff0000) | - ((w & 0xff) << 24); - return res >>> 0; -} -exports.htonl = htonl; -function toHex32(msg, endian) { - var res = ''; - for (var i = 0; i < msg.length; i++) { - var w = msg[i]; - if (endian === 'little') - w = htonl(w); - res += zero8(w.toString(16)); - } - return res; -} -exports.toHex32 = toHex32; + /** + * Checks if `value` is `NaN`. + * + * **Note:** This method is based on + * [`Number.isNaN`](https://mdn.io/Number/isNaN) and is not the same as + * global [`isNaN`](https://mdn.io/isNaN) which returns `true` for + * `undefined` and other non-number values. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is `NaN`, else `false`. + * @example + * + * _.isNaN(NaN); + * // => true + * + * _.isNaN(new Number(NaN)); + * // => true + * + * isNaN(undefined); + * // => true + * + * _.isNaN(undefined); + * // => false + */ + function isNaN(value) { + // An `NaN` primitive is the only value that is not equal to itself. + // Perform the `toStringTag` check first to avoid errors with some + // ActiveX objects in IE. + return isNumber(value) && value != +value; + } -function zero2(word) { - if (word.length === 1) - return '0' + word; - else - return word; -} -exports.zero2 = zero2; + /** + * Checks if `value` is a pristine native function. + * + * **Note:** This method can't reliably detect native functions in the presence + * of the core-js package because core-js circumvents this kind of detection. + * Despite multiple requests, the core-js maintainer has made it clear: any + * attempt to fix the detection will be obstructed. As a result, we're left + * with little choice but to throw an error. Unfortunately, this also affects + * packages, like [babel-polyfill](https://www.npmjs.com/package/babel-polyfill), + * which rely on core-js. + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is a native function, + * else `false`. + * @example + * + * _.isNative(Array.prototype.push); + * // => true + * + * _.isNative(_); + * // => false + */ + function isNative(value) { + if (isMaskable(value)) { + throw new Error(CORE_ERROR_TEXT); + } + return baseIsNative(value); + } -function zero8(word) { - if (word.length === 7) - return '0' + word; - else if (word.length === 6) - return '00' + word; - else if (word.length === 5) - return '000' + word; - else if (word.length === 4) - return '0000' + word; - else if (word.length === 3) - return '00000' + word; - else if (word.length === 2) - return '000000' + word; - else if (word.length === 1) - return '0000000' + word; - else - return word; -} -exports.zero8 = zero8; + /** + * Checks if `value` is `null`. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is `null`, else `false`. + * @example + * + * _.isNull(null); + * // => true + * + * _.isNull(void 0); + * // => false + */ + function isNull(value) { + return value === null; + } -function join32(msg, start, end, endian) { - var len = end - start; - assert(len % 4 === 0); - var res = new Array(len / 4); - for (var i = 0, k = start; i < res.length; i++, k += 4) { - var w; - if (endian === 'big') - w = (msg[k] << 24) | (msg[k + 1] << 16) | (msg[k + 2] << 8) | msg[k + 3]; - else - w = (msg[k + 3] << 24) | (msg[k + 2] << 16) | (msg[k + 1] << 8) | msg[k]; - res[i] = w >>> 0; - } - return res; -} -exports.join32 = join32; + /** + * Checks if `value` is `null` or `undefined`. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is nullish, else `false`. + * @example + * + * _.isNil(null); + * // => true + * + * _.isNil(void 0); + * // => true + * + * _.isNil(NaN); + * // => false + */ + function isNil(value) { + return value == null; + } -function split32(msg, endian) { - var res = new Array(msg.length * 4); - for (var i = 0, k = 0; i < msg.length; i++, k += 4) { - var m = msg[i]; - if (endian === 'big') { - res[k] = m >>> 24; - res[k + 1] = (m >>> 16) & 0xff; - res[k + 2] = (m >>> 8) & 0xff; - res[k + 3] = m & 0xff; - } else { - res[k + 3] = m >>> 24; - res[k + 2] = (m >>> 16) & 0xff; - res[k + 1] = (m >>> 8) & 0xff; - res[k] = m & 0xff; + /** + * Checks if `value` is classified as a `Number` primitive or object. + * + * **Note:** To exclude `Infinity`, `-Infinity`, and `NaN`, which are + * classified as numbers, use the `_.isFinite` method. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is a number, else `false`. + * @example + * + * _.isNumber(3); + * // => true + * + * _.isNumber(Number.MIN_VALUE); + * // => true + * + * _.isNumber(Infinity); + * // => true + * + * _.isNumber('3'); + * // => false + */ + function isNumber(value) { + return typeof value == 'number' || + (isObjectLike(value) && baseGetTag(value) == numberTag); } - } - return res; -} -exports.split32 = split32; -function rotr32(w, b) { - return (w >>> b) | (w << (32 - b)); -} -exports.rotr32 = rotr32; + /** + * Checks if `value` is a plain object, that is, an object created by the + * `Object` constructor or one with a `[[Prototype]]` of `null`. + * + * @static + * @memberOf _ + * @since 0.8.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is a plain object, else `false`. + * @example + * + * function Foo() { + * this.a = 1; + * } + * + * _.isPlainObject(new Foo); + * // => false + * + * _.isPlainObject([1, 2, 3]); + * // => false + * + * _.isPlainObject({ 'x': 0, 'y': 0 }); + * // => true + * + * _.isPlainObject(Object.create(null)); + * // => true + */ + function isPlainObject(value) { + if (!isObjectLike(value) || baseGetTag(value) != objectTag) { + return false; + } + var proto = getPrototype(value); + if (proto === null) { + return true; + } + var Ctor = hasOwnProperty.call(proto, 'constructor') && proto.constructor; + return typeof Ctor == 'function' && Ctor instanceof Ctor && + funcToString.call(Ctor) == objectCtorString; + } -function rotl32(w, b) { - return (w << b) | (w >>> (32 - b)); -} -exports.rotl32 = rotl32; + /** + * Checks if `value` is classified as a `RegExp` object. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is a regexp, else `false`. + * @example + * + * _.isRegExp(/abc/); + * // => true + * + * _.isRegExp('/abc/'); + * // => false + */ + var isRegExp = nodeIsRegExp ? baseUnary(nodeIsRegExp) : baseIsRegExp; -function sum32(a, b) { - return (a + b) >>> 0; -} -exports.sum32 = sum32; + /** + * Checks if `value` is a safe integer. An integer is safe if it's an IEEE-754 + * double precision number which isn't the result of a rounded unsafe integer. + * + * **Note:** This method is based on + * [`Number.isSafeInteger`](https://mdn.io/Number/isSafeInteger). + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is a safe integer, else `false`. + * @example + * + * _.isSafeInteger(3); + * // => true + * + * _.isSafeInteger(Number.MIN_VALUE); + * // => false + * + * _.isSafeInteger(Infinity); + * // => false + * + * _.isSafeInteger('3'); + * // => false + */ + function isSafeInteger(value) { + return isInteger(value) && value >= -MAX_SAFE_INTEGER && value <= MAX_SAFE_INTEGER; + } -function sum32_3(a, b, c) { - return (a + b + c) >>> 0; -} -exports.sum32_3 = sum32_3; + /** + * Checks if `value` is classified as a `Set` object. + * + * @static + * @memberOf _ + * @since 4.3.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is a set, else `false`. + * @example + * + * _.isSet(new Set); + * // => true + * + * _.isSet(new WeakSet); + * // => false + */ + var isSet = nodeIsSet ? baseUnary(nodeIsSet) : baseIsSet; -function sum32_4(a, b, c, d) { - return (a + b + c + d) >>> 0; -} -exports.sum32_4 = sum32_4; + /** + * Checks if `value` is classified as a `String` primitive or object. + * + * @static + * @since 0.1.0 + * @memberOf _ + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is a string, else `false`. + * @example + * + * _.isString('abc'); + * // => true + * + * _.isString(1); + * // => false + */ + function isString(value) { + return typeof value == 'string' || + (!isArray(value) && isObjectLike(value) && baseGetTag(value) == stringTag); + } -function sum32_5(a, b, c, d, e) { - return (a + b + c + d + e) >>> 0; -} -exports.sum32_5 = sum32_5; + /** + * Checks if `value` is classified as a `Symbol` primitive or object. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is a symbol, else `false`. + * @example + * + * _.isSymbol(Symbol.iterator); + * // => true + * + * _.isSymbol('abc'); + * // => false + */ + function isSymbol(value) { + return typeof value == 'symbol' || + (isObjectLike(value) && baseGetTag(value) == symbolTag); + } -function sum64(buf, pos, ah, al) { - var bh = buf[pos]; - var bl = buf[pos + 1]; + /** + * Checks if `value` is classified as a typed array. + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is a typed array, else `false`. + * @example + * + * _.isTypedArray(new Uint8Array); + * // => true + * + * _.isTypedArray([]); + * // => false + */ + var isTypedArray = nodeIsTypedArray ? baseUnary(nodeIsTypedArray) : baseIsTypedArray; - var lo = (al + bl) >>> 0; - var hi = (lo < al ? 1 : 0) + ah + bh; - buf[pos] = hi >>> 0; - buf[pos + 1] = lo; -} -exports.sum64 = sum64; + /** + * Checks if `value` is `undefined`. + * + * @static + * @since 0.1.0 + * @memberOf _ + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is `undefined`, else `false`. + * @example + * + * _.isUndefined(void 0); + * // => true + * + * _.isUndefined(null); + * // => false + */ + function isUndefined(value) { + return value === undefined; + } -function sum64_hi(ah, al, bh, bl) { - var lo = (al + bl) >>> 0; - var hi = (lo < al ? 1 : 0) + ah + bh; - return hi >>> 0; -} -exports.sum64_hi = sum64_hi; + /** + * Checks if `value` is classified as a `WeakMap` object. + * + * @static + * @memberOf _ + * @since 4.3.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is a weak map, else `false`. + * @example + * + * _.isWeakMap(new WeakMap); + * // => true + * + * _.isWeakMap(new Map); + * // => false + */ + function isWeakMap(value) { + return isObjectLike(value) && getTag(value) == weakMapTag; + } -function sum64_lo(ah, al, bh, bl) { - var lo = al + bl; - return lo >>> 0; -} -exports.sum64_lo = sum64_lo; + /** + * Checks if `value` is classified as a `WeakSet` object. + * + * @static + * @memberOf _ + * @since 4.3.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is a weak set, else `false`. + * @example + * + * _.isWeakSet(new WeakSet); + * // => true + * + * _.isWeakSet(new Set); + * // => false + */ + function isWeakSet(value) { + return isObjectLike(value) && baseGetTag(value) == weakSetTag; + } -function sum64_4_hi(ah, al, bh, bl, ch, cl, dh, dl) { - var carry = 0; - var lo = al; - lo = (lo + bl) >>> 0; - carry += lo < al ? 1 : 0; - lo = (lo + cl) >>> 0; - carry += lo < cl ? 1 : 0; - lo = (lo + dl) >>> 0; - carry += lo < dl ? 1 : 0; + /** + * Checks if `value` is less than `other`. + * + * @static + * @memberOf _ + * @since 3.9.0 + * @category Lang + * @param {*} value The value to compare. + * @param {*} other The other value to compare. + * @returns {boolean} Returns `true` if `value` is less than `other`, + * else `false`. + * @see _.gt + * @example + * + * _.lt(1, 3); + * // => true + * + * _.lt(3, 3); + * // => false + * + * _.lt(3, 1); + * // => false + */ + var lt = createRelationalOperation(baseLt); - var hi = ah + bh + ch + dh + carry; - return hi >>> 0; -} -exports.sum64_4_hi = sum64_4_hi; + /** + * Checks if `value` is less than or equal to `other`. + * + * @static + * @memberOf _ + * @since 3.9.0 + * @category Lang + * @param {*} value The value to compare. + * @param {*} other The other value to compare. + * @returns {boolean} Returns `true` if `value` is less than or equal to + * `other`, else `false`. + * @see _.gte + * @example + * + * _.lte(1, 3); + * // => true + * + * _.lte(3, 3); + * // => true + * + * _.lte(3, 1); + * // => false + */ + var lte = createRelationalOperation(function(value, other) { + return value <= other; + }); -function sum64_4_lo(ah, al, bh, bl, ch, cl, dh, dl) { - var lo = al + bl + cl + dl; - return lo >>> 0; -} -exports.sum64_4_lo = sum64_4_lo; + /** + * Converts `value` to an array. + * + * @static + * @since 0.1.0 + * @memberOf _ + * @category Lang + * @param {*} value The value to convert. + * @returns {Array} Returns the converted array. + * @example + * + * _.toArray({ 'a': 1, 'b': 2 }); + * // => [1, 2] + * + * _.toArray('abc'); + * // => ['a', 'b', 'c'] + * + * _.toArray(1); + * // => [] + * + * _.toArray(null); + * // => [] + */ + function toArray(value) { + if (!value) { + return []; + } + if (isArrayLike(value)) { + return isString(value) ? stringToArray(value) : copyArray(value); + } + if (symIterator && value[symIterator]) { + return iteratorToArray(value[symIterator]()); + } + var tag = getTag(value), + func = tag == mapTag ? mapToArray : (tag == setTag ? setToArray : values); -function sum64_5_hi(ah, al, bh, bl, ch, cl, dh, dl, eh, el) { - var carry = 0; - var lo = al; - lo = (lo + bl) >>> 0; - carry += lo < al ? 1 : 0; - lo = (lo + cl) >>> 0; - carry += lo < cl ? 1 : 0; - lo = (lo + dl) >>> 0; - carry += lo < dl ? 1 : 0; - lo = (lo + el) >>> 0; - carry += lo < el ? 1 : 0; + return func(value); + } - var hi = ah + bh + ch + dh + eh + carry; - return hi >>> 0; -} -exports.sum64_5_hi = sum64_5_hi; + /** + * Converts `value` to a finite number. + * + * @static + * @memberOf _ + * @since 4.12.0 + * @category Lang + * @param {*} value The value to convert. + * @returns {number} Returns the converted number. + * @example + * + * _.toFinite(3.2); + * // => 3.2 + * + * _.toFinite(Number.MIN_VALUE); + * // => 5e-324 + * + * _.toFinite(Infinity); + * // => 1.7976931348623157e+308 + * + * _.toFinite('3.2'); + * // => 3.2 + */ + function toFinite(value) { + if (!value) { + return value === 0 ? value : 0; + } + value = toNumber(value); + if (value === INFINITY || value === -INFINITY) { + var sign = (value < 0 ? -1 : 1); + return sign * MAX_INTEGER; + } + return value === value ? value : 0; + } -function sum64_5_lo(ah, al, bh, bl, ch, cl, dh, dl, eh, el) { - var lo = al + bl + cl + dl + el; + /** + * Converts `value` to an integer. + * + * **Note:** This method is loosely based on + * [`ToInteger`](http://www.ecma-international.org/ecma-262/7.0/#sec-tointeger). + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Lang + * @param {*} value The value to convert. + * @returns {number} Returns the converted integer. + * @example + * + * _.toInteger(3.2); + * // => 3 + * + * _.toInteger(Number.MIN_VALUE); + * // => 0 + * + * _.toInteger(Infinity); + * // => 1.7976931348623157e+308 + * + * _.toInteger('3.2'); + * // => 3 + */ + function toInteger(value) { + var result = toFinite(value), + remainder = result % 1; - return lo >>> 0; -} -exports.sum64_5_lo = sum64_5_lo; + return result === result ? (remainder ? result - remainder : result) : 0; + } -function rotr64_hi(ah, al, num) { - var r = (al << (32 - num)) | (ah >>> num); - return r >>> 0; -} -exports.rotr64_hi = rotr64_hi; + /** + * Converts `value` to an integer suitable for use as the length of an + * array-like object. + * + * **Note:** This method is based on + * [`ToLength`](http://ecma-international.org/ecma-262/7.0/#sec-tolength). + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Lang + * @param {*} value The value to convert. + * @returns {number} Returns the converted integer. + * @example + * + * _.toLength(3.2); + * // => 3 + * + * _.toLength(Number.MIN_VALUE); + * // => 0 + * + * _.toLength(Infinity); + * // => 4294967295 + * + * _.toLength('3.2'); + * // => 3 + */ + function toLength(value) { + return value ? baseClamp(toInteger(value), 0, MAX_ARRAY_LENGTH) : 0; + } -function rotr64_lo(ah, al, num) { - var r = (ah << (32 - num)) | (al >>> num); - return r >>> 0; -} -exports.rotr64_lo = rotr64_lo; + /** + * Converts `value` to a number. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Lang + * @param {*} value The value to process. + * @returns {number} Returns the number. + * @example + * + * _.toNumber(3.2); + * // => 3.2 + * + * _.toNumber(Number.MIN_VALUE); + * // => 5e-324 + * + * _.toNumber(Infinity); + * // => Infinity + * + * _.toNumber('3.2'); + * // => 3.2 + */ + function toNumber(value) { + if (typeof value == 'number') { + return value; + } + if (isSymbol(value)) { + return NAN; + } + if (isObject(value)) { + var other = typeof value.valueOf == 'function' ? value.valueOf() : value; + value = isObject(other) ? (other + '') : other; + } + if (typeof value != 'string') { + return value === 0 ? value : +value; + } + value = value.replace(reTrim, ''); + var isBinary = reIsBinary.test(value); + return (isBinary || reIsOctal.test(value)) + ? freeParseInt(value.slice(2), isBinary ? 2 : 8) + : (reIsBadHex.test(value) ? NAN : +value); + } -function shr64_hi(ah, al, num) { - return ah >>> num; -} -exports.shr64_hi = shr64_hi; + /** + * Converts `value` to a plain object flattening inherited enumerable string + * keyed properties of `value` to own properties of the plain object. + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category Lang + * @param {*} value The value to convert. + * @returns {Object} Returns the converted plain object. + * @example + * + * function Foo() { + * this.b = 2; + * } + * + * Foo.prototype.c = 3; + * + * _.assign({ 'a': 1 }, new Foo); + * // => { 'a': 1, 'b': 2 } + * + * _.assign({ 'a': 1 }, _.toPlainObject(new Foo)); + * // => { 'a': 1, 'b': 2, 'c': 3 } + */ + function toPlainObject(value) { + return copyObject(value, keysIn(value)); + } -function shr64_lo(ah, al, num) { - var r = (ah << (32 - num)) | (al >>> num); - return r >>> 0; -} -exports.shr64_lo = shr64_lo; + /** + * Converts `value` to a safe integer. A safe integer can be compared and + * represented correctly. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Lang + * @param {*} value The value to convert. + * @returns {number} Returns the converted integer. + * @example + * + * _.toSafeInteger(3.2); + * // => 3 + * + * _.toSafeInteger(Number.MIN_VALUE); + * // => 0 + * + * _.toSafeInteger(Infinity); + * // => 9007199254740991 + * + * _.toSafeInteger('3.2'); + * // => 3 + */ + function toSafeInteger(value) { + return value + ? baseClamp(toInteger(value), -MAX_SAFE_INTEGER, MAX_SAFE_INTEGER) + : (value === 0 ? value : 0); + } -},{"inherits":242,"minimalistic-assert":246}],242:[function(require,module,exports){ -arguments[4][16][0].apply(exports,arguments) -},{"dup":16}],243:[function(require,module,exports){ -arguments[4][102][0].apply(exports,arguments) -},{"dup":102,"hash.js":230,"minimalistic-assert":246,"minimalistic-crypto-utils":247}],244:[function(require,module,exports){ -arguments[4][16][0].apply(exports,arguments) -},{"dup":16}],245:[function(require,module,exports){ -(function (global){ -/** - * @license - * Lodash - * Copyright JS Foundation and other contributors - * Released under MIT license - * Based on Underscore.js 1.8.3 - * Copyright Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors - */ -;(function() { + /** + * Converts `value` to a string. An empty string is returned for `null` + * and `undefined` values. The sign of `-0` is preserved. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Lang + * @param {*} value The value to convert. + * @returns {string} Returns the converted string. + * @example + * + * _.toString(null); + * // => '' + * + * _.toString(-0); + * // => '-0' + * + * _.toString([1, 2, 3]); + * // => '1,2,3' + */ + function toString(value) { + return value == null ? '' : baseToString(value); + } - /** Used as a safe reference for `undefined` in pre-ES5 environments. */ - var undefined; + /*------------------------------------------------------------------------*/ - /** Used as the semantic version number. */ - var VERSION = '4.17.11'; + /** + * Assigns own enumerable string keyed properties of source objects to the + * destination object. Source objects are applied from left to right. + * Subsequent sources overwrite property assignments of previous sources. + * + * **Note:** This method mutates `object` and is loosely based on + * [`Object.assign`](https://mdn.io/Object/assign). + * + * @static + * @memberOf _ + * @since 0.10.0 + * @category Object + * @param {Object} object The destination object. + * @param {...Object} [sources] The source objects. + * @returns {Object} Returns `object`. + * @see _.assignIn + * @example + * + * function Foo() { + * this.a = 1; + * } + * + * function Bar() { + * this.c = 3; + * } + * + * Foo.prototype.b = 2; + * Bar.prototype.d = 4; + * + * _.assign({ 'a': 0 }, new Foo, new Bar); + * // => { 'a': 1, 'c': 3 } + */ + var assign = createAssigner(function(object, source) { + if (isPrototype(source) || isArrayLike(source)) { + copyObject(source, keys(source), object); + return; + } + for (var key in source) { + if (hasOwnProperty.call(source, key)) { + assignValue(object, key, source[key]); + } + } + }); - /** Used as the size to enable large array optimizations. */ - var LARGE_ARRAY_SIZE = 200; + /** + * This method is like `_.assign` except that it iterates over own and + * inherited source properties. + * + * **Note:** This method mutates `object`. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @alias extend + * @category Object + * @param {Object} object The destination object. + * @param {...Object} [sources] The source objects. + * @returns {Object} Returns `object`. + * @see _.assign + * @example + * + * function Foo() { + * this.a = 1; + * } + * + * function Bar() { + * this.c = 3; + * } + * + * Foo.prototype.b = 2; + * Bar.prototype.d = 4; + * + * _.assignIn({ 'a': 0 }, new Foo, new Bar); + * // => { 'a': 1, 'b': 2, 'c': 3, 'd': 4 } + */ + var assignIn = createAssigner(function(object, source) { + copyObject(source, keysIn(source), object); + }); - /** Error message constants. */ - var CORE_ERROR_TEXT = 'Unsupported core-js use. Try https://npms.io/search?q=ponyfill.', - FUNC_ERROR_TEXT = 'Expected a function'; + /** + * This method is like `_.assignIn` except that it accepts `customizer` + * which is invoked to produce the assigned values. If `customizer` returns + * `undefined`, assignment is handled by the method instead. The `customizer` + * is invoked with five arguments: (objValue, srcValue, key, object, source). + * + * **Note:** This method mutates `object`. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @alias extendWith + * @category Object + * @param {Object} object The destination object. + * @param {...Object} sources The source objects. + * @param {Function} [customizer] The function to customize assigned values. + * @returns {Object} Returns `object`. + * @see _.assignWith + * @example + * + * function customizer(objValue, srcValue) { + * return _.isUndefined(objValue) ? srcValue : objValue; + * } + * + * var defaults = _.partialRight(_.assignInWith, customizer); + * + * defaults({ 'a': 1 }, { 'b': 2 }, { 'a': 3 }); + * // => { 'a': 1, 'b': 2 } + */ + var assignInWith = createAssigner(function(object, source, srcIndex, customizer) { + copyObject(source, keysIn(source), object, customizer); + }); - /** Used to stand-in for `undefined` hash values. */ - var HASH_UNDEFINED = '__lodash_hash_undefined__'; + /** + * This method is like `_.assign` except that it accepts `customizer` + * which is invoked to produce the assigned values. If `customizer` returns + * `undefined`, assignment is handled by the method instead. The `customizer` + * is invoked with five arguments: (objValue, srcValue, key, object, source). + * + * **Note:** This method mutates `object`. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Object + * @param {Object} object The destination object. + * @param {...Object} sources The source objects. + * @param {Function} [customizer] The function to customize assigned values. + * @returns {Object} Returns `object`. + * @see _.assignInWith + * @example + * + * function customizer(objValue, srcValue) { + * return _.isUndefined(objValue) ? srcValue : objValue; + * } + * + * var defaults = _.partialRight(_.assignWith, customizer); + * + * defaults({ 'a': 1 }, { 'b': 2 }, { 'a': 3 }); + * // => { 'a': 1, 'b': 2 } + */ + var assignWith = createAssigner(function(object, source, srcIndex, customizer) { + copyObject(source, keys(source), object, customizer); + }); - /** Used as the maximum memoize cache size. */ - var MAX_MEMOIZE_SIZE = 500; + /** + * Creates an array of values corresponding to `paths` of `object`. + * + * @static + * @memberOf _ + * @since 1.0.0 + * @category Object + * @param {Object} object The object to iterate over. + * @param {...(string|string[])} [paths] The property paths to pick. + * @returns {Array} Returns the picked values. + * @example + * + * var object = { 'a': [{ 'b': { 'c': 3 } }, 4] }; + * + * _.at(object, ['a[0].b.c', 'a[1]']); + * // => [3, 4] + */ + var at = flatRest(baseAt); - /** Used as the internal argument placeholder. */ - var PLACEHOLDER = '__lodash_placeholder__'; + /** + * Creates an object that inherits from the `prototype` object. If a + * `properties` object is given, its own enumerable string keyed properties + * are assigned to the created object. + * + * @static + * @memberOf _ + * @since 2.3.0 + * @category Object + * @param {Object} prototype The object to inherit from. + * @param {Object} [properties] The properties to assign to the object. + * @returns {Object} Returns the new object. + * @example + * + * function Shape() { + * this.x = 0; + * this.y = 0; + * } + * + * function Circle() { + * Shape.call(this); + * } + * + * Circle.prototype = _.create(Shape.prototype, { + * 'constructor': Circle + * }); + * + * var circle = new Circle; + * circle instanceof Circle; + * // => true + * + * circle instanceof Shape; + * // => true + */ + function create(prototype, properties) { + var result = baseCreate(prototype); + return properties == null ? result : baseAssign(result, properties); + } - /** Used to compose bitmasks for cloning. */ - var CLONE_DEEP_FLAG = 1, - CLONE_FLAT_FLAG = 2, - CLONE_SYMBOLS_FLAG = 4; + /** + * Assigns own and inherited enumerable string keyed properties of source + * objects to the destination object for all destination properties that + * resolve to `undefined`. Source objects are applied from left to right. + * Once a property is set, additional values of the same property are ignored. + * + * **Note:** This method mutates `object`. + * + * @static + * @since 0.1.0 + * @memberOf _ + * @category Object + * @param {Object} object The destination object. + * @param {...Object} [sources] The source objects. + * @returns {Object} Returns `object`. + * @see _.defaultsDeep + * @example + * + * _.defaults({ 'a': 1 }, { 'b': 2 }, { 'a': 3 }); + * // => { 'a': 1, 'b': 2 } + */ + var defaults = baseRest(function(object, sources) { + object = Object(object); - /** Used to compose bitmasks for value comparisons. */ - var COMPARE_PARTIAL_FLAG = 1, - COMPARE_UNORDERED_FLAG = 2; + var index = -1; + var length = sources.length; + var guard = length > 2 ? sources[2] : undefined; - /** Used to compose bitmasks for function metadata. */ - var WRAP_BIND_FLAG = 1, - WRAP_BIND_KEY_FLAG = 2, - WRAP_CURRY_BOUND_FLAG = 4, - WRAP_CURRY_FLAG = 8, - WRAP_CURRY_RIGHT_FLAG = 16, - WRAP_PARTIAL_FLAG = 32, - WRAP_PARTIAL_RIGHT_FLAG = 64, - WRAP_ARY_FLAG = 128, - WRAP_REARG_FLAG = 256, - WRAP_FLIP_FLAG = 512; + if (guard && isIterateeCall(sources[0], sources[1], guard)) { + length = 1; + } - /** Used as default options for `_.truncate`. */ - var DEFAULT_TRUNC_LENGTH = 30, - DEFAULT_TRUNC_OMISSION = '...'; + while (++index < length) { + var source = sources[index]; + var props = keysIn(source); + var propsIndex = -1; + var propsLength = props.length; - /** Used to detect hot functions by number of calls within a span of milliseconds. */ - var HOT_COUNT = 800, - HOT_SPAN = 16; + while (++propsIndex < propsLength) { + var key = props[propsIndex]; + var value = object[key]; - /** Used to indicate the type of lazy iteratees. */ - var LAZY_FILTER_FLAG = 1, - LAZY_MAP_FLAG = 2, - LAZY_WHILE_FLAG = 3; + if (value === undefined || + (eq(value, objectProto[key]) && !hasOwnProperty.call(object, key))) { + object[key] = source[key]; + } + } + } - /** Used as references for various `Number` constants. */ - var INFINITY = 1 / 0, - MAX_SAFE_INTEGER = 9007199254740991, - MAX_INTEGER = 1.7976931348623157e+308, - NAN = 0 / 0; + return object; + }); - /** Used as references for the maximum length and index of an array. */ - var MAX_ARRAY_LENGTH = 4294967295, - MAX_ARRAY_INDEX = MAX_ARRAY_LENGTH - 1, - HALF_MAX_ARRAY_LENGTH = MAX_ARRAY_LENGTH >>> 1; + /** + * This method is like `_.defaults` except that it recursively assigns + * default properties. + * + * **Note:** This method mutates `object`. + * + * @static + * @memberOf _ + * @since 3.10.0 + * @category Object + * @param {Object} object The destination object. + * @param {...Object} [sources] The source objects. + * @returns {Object} Returns `object`. + * @see _.defaults + * @example + * + * _.defaultsDeep({ 'a': { 'b': 2 } }, { 'a': { 'b': 1, 'c': 3 } }); + * // => { 'a': { 'b': 2, 'c': 3 } } + */ + var defaultsDeep = baseRest(function(args) { + args.push(undefined, customDefaultsMerge); + return apply(mergeWith, undefined, args); + }); - /** Used to associate wrap methods with their bit flags. */ - var wrapFlags = [ - ['ary', WRAP_ARY_FLAG], - ['bind', WRAP_BIND_FLAG], - ['bindKey', WRAP_BIND_KEY_FLAG], - ['curry', WRAP_CURRY_FLAG], - ['curryRight', WRAP_CURRY_RIGHT_FLAG], - ['flip', WRAP_FLIP_FLAG], - ['partial', WRAP_PARTIAL_FLAG], - ['partialRight', WRAP_PARTIAL_RIGHT_FLAG], - ['rearg', WRAP_REARG_FLAG] - ]; + /** + * This method is like `_.find` except that it returns the key of the first + * element `predicate` returns truthy for instead of the element itself. + * + * @static + * @memberOf _ + * @since 1.1.0 + * @category Object + * @param {Object} object The object to inspect. + * @param {Function} [predicate=_.identity] The function invoked per iteration. + * @returns {string|undefined} Returns the key of the matched element, + * else `undefined`. + * @example + * + * var users = { + * 'barney': { 'age': 36, 'active': true }, + * 'fred': { 'age': 40, 'active': false }, + * 'pebbles': { 'age': 1, 'active': true } + * }; + * + * _.findKey(users, function(o) { return o.age < 40; }); + * // => 'barney' (iteration order is not guaranteed) + * + * // The `_.matches` iteratee shorthand. + * _.findKey(users, { 'age': 1, 'active': true }); + * // => 'pebbles' + * + * // The `_.matchesProperty` iteratee shorthand. + * _.findKey(users, ['active', false]); + * // => 'fred' + * + * // The `_.property` iteratee shorthand. + * _.findKey(users, 'active'); + * // => 'barney' + */ + function findKey(object, predicate) { + return baseFindKey(object, getIteratee(predicate, 3), baseForOwn); + } - /** `Object#toString` result references. */ - var argsTag = '[object Arguments]', - arrayTag = '[object Array]', - asyncTag = '[object AsyncFunction]', - boolTag = '[object Boolean]', - dateTag = '[object Date]', - domExcTag = '[object DOMException]', - errorTag = '[object Error]', - funcTag = '[object Function]', - genTag = '[object GeneratorFunction]', - mapTag = '[object Map]', - numberTag = '[object Number]', - nullTag = '[object Null]', - objectTag = '[object Object]', - promiseTag = '[object Promise]', - proxyTag = '[object Proxy]', - regexpTag = '[object RegExp]', - setTag = '[object Set]', - stringTag = '[object String]', - symbolTag = '[object Symbol]', - undefinedTag = '[object Undefined]', - weakMapTag = '[object WeakMap]', - weakSetTag = '[object WeakSet]'; + /** + * This method is like `_.findKey` except that it iterates over elements of + * a collection in the opposite order. + * + * @static + * @memberOf _ + * @since 2.0.0 + * @category Object + * @param {Object} object The object to inspect. + * @param {Function} [predicate=_.identity] The function invoked per iteration. + * @returns {string|undefined} Returns the key of the matched element, + * else `undefined`. + * @example + * + * var users = { + * 'barney': { 'age': 36, 'active': true }, + * 'fred': { 'age': 40, 'active': false }, + * 'pebbles': { 'age': 1, 'active': true } + * }; + * + * _.findLastKey(users, function(o) { return o.age < 40; }); + * // => returns 'pebbles' assuming `_.findKey` returns 'barney' + * + * // The `_.matches` iteratee shorthand. + * _.findLastKey(users, { 'age': 36, 'active': true }); + * // => 'barney' + * + * // The `_.matchesProperty` iteratee shorthand. + * _.findLastKey(users, ['active', false]); + * // => 'fred' + * + * // The `_.property` iteratee shorthand. + * _.findLastKey(users, 'active'); + * // => 'pebbles' + */ + function findLastKey(object, predicate) { + return baseFindKey(object, getIteratee(predicate, 3), baseForOwnRight); + } - var arrayBufferTag = '[object ArrayBuffer]', - dataViewTag = '[object DataView]', - float32Tag = '[object Float32Array]', - float64Tag = '[object Float64Array]', - int8Tag = '[object Int8Array]', - int16Tag = '[object Int16Array]', - int32Tag = '[object Int32Array]', - uint8Tag = '[object Uint8Array]', - uint8ClampedTag = '[object Uint8ClampedArray]', - uint16Tag = '[object Uint16Array]', - uint32Tag = '[object Uint32Array]'; + /** + * Iterates over own and inherited enumerable string keyed properties of an + * object and invokes `iteratee` for each property. The iteratee is invoked + * with three arguments: (value, key, object). Iteratee functions may exit + * iteration early by explicitly returning `false`. + * + * @static + * @memberOf _ + * @since 0.3.0 + * @category Object + * @param {Object} object The object to iterate over. + * @param {Function} [iteratee=_.identity] The function invoked per iteration. + * @returns {Object} Returns `object`. + * @see _.forInRight + * @example + * + * function Foo() { + * this.a = 1; + * this.b = 2; + * } + * + * Foo.prototype.c = 3; + * + * _.forIn(new Foo, function(value, key) { + * console.log(key); + * }); + * // => Logs 'a', 'b', then 'c' (iteration order is not guaranteed). + */ + function forIn(object, iteratee) { + return object == null + ? object + : baseFor(object, getIteratee(iteratee, 3), keysIn); + } - /** Used to match empty string literals in compiled template source. */ - var reEmptyStringLeading = /\b__p \+= '';/g, - reEmptyStringMiddle = /\b(__p \+=) '' \+/g, - reEmptyStringTrailing = /(__e\(.*?\)|\b__t\)) \+\n'';/g; + /** + * This method is like `_.forIn` except that it iterates over properties of + * `object` in the opposite order. + * + * @static + * @memberOf _ + * @since 2.0.0 + * @category Object + * @param {Object} object The object to iterate over. + * @param {Function} [iteratee=_.identity] The function invoked per iteration. + * @returns {Object} Returns `object`. + * @see _.forIn + * @example + * + * function Foo() { + * this.a = 1; + * this.b = 2; + * } + * + * Foo.prototype.c = 3; + * + * _.forInRight(new Foo, function(value, key) { + * console.log(key); + * }); + * // => Logs 'c', 'b', then 'a' assuming `_.forIn` logs 'a', 'b', then 'c'. + */ + function forInRight(object, iteratee) { + return object == null + ? object + : baseForRight(object, getIteratee(iteratee, 3), keysIn); + } - /** Used to match HTML entities and HTML characters. */ - var reEscapedHtml = /&(?:amp|lt|gt|quot|#39);/g, - reUnescapedHtml = /[&<>"']/g, - reHasEscapedHtml = RegExp(reEscapedHtml.source), - reHasUnescapedHtml = RegExp(reUnescapedHtml.source); + /** + * Iterates over own enumerable string keyed properties of an object and + * invokes `iteratee` for each property. The iteratee is invoked with three + * arguments: (value, key, object). Iteratee functions may exit iteration + * early by explicitly returning `false`. + * + * @static + * @memberOf _ + * @since 0.3.0 + * @category Object + * @param {Object} object The object to iterate over. + * @param {Function} [iteratee=_.identity] The function invoked per iteration. + * @returns {Object} Returns `object`. + * @see _.forOwnRight + * @example + * + * function Foo() { + * this.a = 1; + * this.b = 2; + * } + * + * Foo.prototype.c = 3; + * + * _.forOwn(new Foo, function(value, key) { + * console.log(key); + * }); + * // => Logs 'a' then 'b' (iteration order is not guaranteed). + */ + function forOwn(object, iteratee) { + return object && baseForOwn(object, getIteratee(iteratee, 3)); + } - /** Used to match template delimiters. */ - var reEscape = /<%-([\s\S]+?)%>/g, - reEvaluate = /<%([\s\S]+?)%>/g, - reInterpolate = /<%=([\s\S]+?)%>/g; + /** + * This method is like `_.forOwn` except that it iterates over properties of + * `object` in the opposite order. + * + * @static + * @memberOf _ + * @since 2.0.0 + * @category Object + * @param {Object} object The object to iterate over. + * @param {Function} [iteratee=_.identity] The function invoked per iteration. + * @returns {Object} Returns `object`. + * @see _.forOwn + * @example + * + * function Foo() { + * this.a = 1; + * this.b = 2; + * } + * + * Foo.prototype.c = 3; + * + * _.forOwnRight(new Foo, function(value, key) { + * console.log(key); + * }); + * // => Logs 'b' then 'a' assuming `_.forOwn` logs 'a' then 'b'. + */ + function forOwnRight(object, iteratee) { + return object && baseForOwnRight(object, getIteratee(iteratee, 3)); + } - /** Used to match property names within property paths. */ - var reIsDeepProp = /\.|\[(?:[^[\]]*|(["'])(?:(?!\1)[^\\]|\\.)*?\1)\]/, - reIsPlainProp = /^\w*$/, - rePropName = /[^.[\]]+|\[(?:(-?\d+(?:\.\d+)?)|(["'])((?:(?!\2)[^\\]|\\.)*?)\2)\]|(?=(?:\.|\[\])(?:\.|\[\]|$))/g; + /** + * Creates an array of function property names from own enumerable properties + * of `object`. + * + * @static + * @since 0.1.0 + * @memberOf _ + * @category Object + * @param {Object} object The object to inspect. + * @returns {Array} Returns the function names. + * @see _.functionsIn + * @example + * + * function Foo() { + * this.a = _.constant('a'); + * this.b = _.constant('b'); + * } + * + * Foo.prototype.c = _.constant('c'); + * + * _.functions(new Foo); + * // => ['a', 'b'] + */ + function functions(object) { + return object == null ? [] : baseFunctions(object, keys(object)); + } - /** - * Used to match `RegExp` - * [syntax characters](http://ecma-international.org/ecma-262/7.0/#sec-patterns). - */ - var reRegExpChar = /[\\^$.*+?()[\]{}|]/g, - reHasRegExpChar = RegExp(reRegExpChar.source); + /** + * Creates an array of function property names from own and inherited + * enumerable properties of `object`. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Object + * @param {Object} object The object to inspect. + * @returns {Array} Returns the function names. + * @see _.functions + * @example + * + * function Foo() { + * this.a = _.constant('a'); + * this.b = _.constant('b'); + * } + * + * Foo.prototype.c = _.constant('c'); + * + * _.functionsIn(new Foo); + * // => ['a', 'b', 'c'] + */ + function functionsIn(object) { + return object == null ? [] : baseFunctions(object, keysIn(object)); + } - /** Used to match leading and trailing whitespace. */ - var reTrim = /^\s+|\s+$/g, - reTrimStart = /^\s+/, - reTrimEnd = /\s+$/; + /** + * Gets the value at `path` of `object`. If the resolved value is + * `undefined`, the `defaultValue` is returned in its place. + * + * @static + * @memberOf _ + * @since 3.7.0 + * @category Object + * @param {Object} object The object to query. + * @param {Array|string} path The path of the property to get. + * @param {*} [defaultValue] The value returned for `undefined` resolved values. + * @returns {*} Returns the resolved value. + * @example + * + * var object = { 'a': [{ 'b': { 'c': 3 } }] }; + * + * _.get(object, 'a[0].b.c'); + * // => 3 + * + * _.get(object, ['a', '0', 'b', 'c']); + * // => 3 + * + * _.get(object, 'a.b.c', 'default'); + * // => 'default' + */ + function get(object, path, defaultValue) { + var result = object == null ? undefined : baseGet(object, path); + return result === undefined ? defaultValue : result; + } - /** Used to match wrap detail comments. */ - var reWrapComment = /\{(?:\n\/\* \[wrapped with .+\] \*\/)?\n?/, - reWrapDetails = /\{\n\/\* \[wrapped with (.+)\] \*/, - reSplitDetails = /,? & /; + /** + * Checks if `path` is a direct property of `object`. + * + * @static + * @since 0.1.0 + * @memberOf _ + * @category Object + * @param {Object} object The object to query. + * @param {Array|string} path The path to check. + * @returns {boolean} Returns `true` if `path` exists, else `false`. + * @example + * + * var object = { 'a': { 'b': 2 } }; + * var other = _.create({ 'a': _.create({ 'b': 2 }) }); + * + * _.has(object, 'a'); + * // => true + * + * _.has(object, 'a.b'); + * // => true + * + * _.has(object, ['a', 'b']); + * // => true + * + * _.has(other, 'a'); + * // => false + */ + function has(object, path) { + return object != null && hasPath(object, path, baseHas); + } - /** Used to match words composed of alphanumeric characters. */ - var reAsciiWord = /[^\x00-\x2f\x3a-\x40\x5b-\x60\x7b-\x7f]+/g; + /** + * Checks if `path` is a direct or inherited property of `object`. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Object + * @param {Object} object The object to query. + * @param {Array|string} path The path to check. + * @returns {boolean} Returns `true` if `path` exists, else `false`. + * @example + * + * var object = _.create({ 'a': _.create({ 'b': 2 }) }); + * + * _.hasIn(object, 'a'); + * // => true + * + * _.hasIn(object, 'a.b'); + * // => true + * + * _.hasIn(object, ['a', 'b']); + * // => true + * + * _.hasIn(object, 'b'); + * // => false + */ + function hasIn(object, path) { + return object != null && hasPath(object, path, baseHasIn); + } - /** Used to match backslashes in property paths. */ - var reEscapeChar = /\\(\\)?/g; + /** + * Creates an object composed of the inverted keys and values of `object`. + * If `object` contains duplicate values, subsequent values overwrite + * property assignments of previous values. + * + * @static + * @memberOf _ + * @since 0.7.0 + * @category Object + * @param {Object} object The object to invert. + * @returns {Object} Returns the new inverted object. + * @example + * + * var object = { 'a': 1, 'b': 2, 'c': 1 }; + * + * _.invert(object); + * // => { '1': 'c', '2': 'b' } + */ + var invert = createInverter(function(result, value, key) { + if (value != null && + typeof value.toString != 'function') { + value = nativeObjectToString.call(value); + } - /** - * Used to match - * [ES template delimiters](http://ecma-international.org/ecma-262/7.0/#sec-template-literal-lexical-components). - */ - var reEsTemplate = /\$\{([^\\}]*(?:\\.[^\\}]*)*)\}/g; + result[value] = key; + }, constant(identity)); - /** Used to match `RegExp` flags from their coerced string values. */ - var reFlags = /\w*$/; + /** + * This method is like `_.invert` except that the inverted object is generated + * from the results of running each element of `object` thru `iteratee`. The + * corresponding inverted value of each inverted key is an array of keys + * responsible for generating the inverted value. The iteratee is invoked + * with one argument: (value). + * + * @static + * @memberOf _ + * @since 4.1.0 + * @category Object + * @param {Object} object The object to invert. + * @param {Function} [iteratee=_.identity] The iteratee invoked per element. + * @returns {Object} Returns the new inverted object. + * @example + * + * var object = { 'a': 1, 'b': 2, 'c': 1 }; + * + * _.invertBy(object); + * // => { '1': ['a', 'c'], '2': ['b'] } + * + * _.invertBy(object, function(value) { + * return 'group' + value; + * }); + * // => { 'group1': ['a', 'c'], 'group2': ['b'] } + */ + var invertBy = createInverter(function(result, value, key) { + if (value != null && + typeof value.toString != 'function') { + value = nativeObjectToString.call(value); + } - /** Used to detect bad signed hexadecimal string values. */ - var reIsBadHex = /^[-+]0x[0-9a-f]+$/i; + if (hasOwnProperty.call(result, value)) { + result[value].push(key); + } else { + result[value] = [key]; + } + }, getIteratee); - /** Used to detect binary string values. */ - var reIsBinary = /^0b[01]+$/i; + /** + * Invokes the method at `path` of `object`. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Object + * @param {Object} object The object to query. + * @param {Array|string} path The path of the method to invoke. + * @param {...*} [args] The arguments to invoke the method with. + * @returns {*} Returns the result of the invoked method. + * @example + * + * var object = { 'a': [{ 'b': { 'c': [1, 2, 3, 4] } }] }; + * + * _.invoke(object, 'a[0].b.c.slice', 1, 3); + * // => [2, 3] + */ + var invoke = baseRest(baseInvoke); - /** Used to detect host constructors (Safari). */ - var reIsHostCtor = /^\[object .+?Constructor\]$/; + /** + * Creates an array of the own enumerable property names of `object`. + * + * **Note:** Non-object values are coerced to objects. See the + * [ES spec](http://ecma-international.org/ecma-262/7.0/#sec-object.keys) + * for more details. + * + * @static + * @since 0.1.0 + * @memberOf _ + * @category Object + * @param {Object} object The object to query. + * @returns {Array} Returns the array of property names. + * @example + * + * function Foo() { + * this.a = 1; + * this.b = 2; + * } + * + * Foo.prototype.c = 3; + * + * _.keys(new Foo); + * // => ['a', 'b'] (iteration order is not guaranteed) + * + * _.keys('hi'); + * // => ['0', '1'] + */ + function keys(object) { + return isArrayLike(object) ? arrayLikeKeys(object) : baseKeys(object); + } - /** Used to detect octal string values. */ - var reIsOctal = /^0o[0-7]+$/i; + /** + * Creates an array of the own and inherited enumerable property names of `object`. + * + * **Note:** Non-object values are coerced to objects. + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category Object + * @param {Object} object The object to query. + * @returns {Array} Returns the array of property names. + * @example + * + * function Foo() { + * this.a = 1; + * this.b = 2; + * } + * + * Foo.prototype.c = 3; + * + * _.keysIn(new Foo); + * // => ['a', 'b', 'c'] (iteration order is not guaranteed) + */ + function keysIn(object) { + return isArrayLike(object) ? arrayLikeKeys(object, true) : baseKeysIn(object); + } - /** Used to detect unsigned integer values. */ - var reIsUint = /^(?:0|[1-9]\d*)$/; + /** + * The opposite of `_.mapValues`; this method creates an object with the + * same values as `object` and keys generated by running each own enumerable + * string keyed property of `object` thru `iteratee`. The iteratee is invoked + * with three arguments: (value, key, object). + * + * @static + * @memberOf _ + * @since 3.8.0 + * @category Object + * @param {Object} object The object to iterate over. + * @param {Function} [iteratee=_.identity] The function invoked per iteration. + * @returns {Object} Returns the new mapped object. + * @see _.mapValues + * @example + * + * _.mapKeys({ 'a': 1, 'b': 2 }, function(value, key) { + * return key + value; + * }); + * // => { 'a1': 1, 'b2': 2 } + */ + function mapKeys(object, iteratee) { + var result = {}; + iteratee = getIteratee(iteratee, 3); - /** Used to match Latin Unicode letters (excluding mathematical operators). */ - var reLatin = /[\xc0-\xd6\xd8-\xf6\xf8-\xff\u0100-\u017f]/g; + baseForOwn(object, function(value, key, object) { + baseAssignValue(result, iteratee(value, key, object), value); + }); + return result; + } - /** Used to ensure capturing order of template delimiters. */ - var reNoMatch = /($^)/; + /** + * Creates an object with the same keys as `object` and values generated + * by running each own enumerable string keyed property of `object` thru + * `iteratee`. The iteratee is invoked with three arguments: + * (value, key, object). + * + * @static + * @memberOf _ + * @since 2.4.0 + * @category Object + * @param {Object} object The object to iterate over. + * @param {Function} [iteratee=_.identity] The function invoked per iteration. + * @returns {Object} Returns the new mapped object. + * @see _.mapKeys + * @example + * + * var users = { + * 'fred': { 'user': 'fred', 'age': 40 }, + * 'pebbles': { 'user': 'pebbles', 'age': 1 } + * }; + * + * _.mapValues(users, function(o) { return o.age; }); + * // => { 'fred': 40, 'pebbles': 1 } (iteration order is not guaranteed) + * + * // The `_.property` iteratee shorthand. + * _.mapValues(users, 'age'); + * // => { 'fred': 40, 'pebbles': 1 } (iteration order is not guaranteed) + */ + function mapValues(object, iteratee) { + var result = {}; + iteratee = getIteratee(iteratee, 3); - /** Used to match unescaped characters in compiled string literals. */ - var reUnescapedString = /['\n\r\u2028\u2029\\]/g; + baseForOwn(object, function(value, key, object) { + baseAssignValue(result, key, iteratee(value, key, object)); + }); + return result; + } - /** Used to compose unicode character classes. */ - var rsAstralRange = '\\ud800-\\udfff', - rsComboMarksRange = '\\u0300-\\u036f', - reComboHalfMarksRange = '\\ufe20-\\ufe2f', - rsComboSymbolsRange = '\\u20d0-\\u20ff', - rsComboRange = rsComboMarksRange + reComboHalfMarksRange + rsComboSymbolsRange, - rsDingbatRange = '\\u2700-\\u27bf', - rsLowerRange = 'a-z\\xdf-\\xf6\\xf8-\\xff', - rsMathOpRange = '\\xac\\xb1\\xd7\\xf7', - rsNonCharRange = '\\x00-\\x2f\\x3a-\\x40\\x5b-\\x60\\x7b-\\xbf', - rsPunctuationRange = '\\u2000-\\u206f', - rsSpaceRange = ' \\t\\x0b\\f\\xa0\\ufeff\\n\\r\\u2028\\u2029\\u1680\\u180e\\u2000\\u2001\\u2002\\u2003\\u2004\\u2005\\u2006\\u2007\\u2008\\u2009\\u200a\\u202f\\u205f\\u3000', - rsUpperRange = 'A-Z\\xc0-\\xd6\\xd8-\\xde', - rsVarRange = '\\ufe0e\\ufe0f', - rsBreakRange = rsMathOpRange + rsNonCharRange + rsPunctuationRange + rsSpaceRange; + /** + * This method is like `_.assign` except that it recursively merges own and + * inherited enumerable string keyed properties of source objects into the + * destination object. Source properties that resolve to `undefined` are + * skipped if a destination value exists. Array and plain object properties + * are merged recursively. Other objects and value types are overridden by + * assignment. Source objects are applied from left to right. Subsequent + * sources overwrite property assignments of previous sources. + * + * **Note:** This method mutates `object`. + * + * @static + * @memberOf _ + * @since 0.5.0 + * @category Object + * @param {Object} object The destination object. + * @param {...Object} [sources] The source objects. + * @returns {Object} Returns `object`. + * @example + * + * var object = { + * 'a': [{ 'b': 2 }, { 'd': 4 }] + * }; + * + * var other = { + * 'a': [{ 'c': 3 }, { 'e': 5 }] + * }; + * + * _.merge(object, other); + * // => { 'a': [{ 'b': 2, 'c': 3 }, { 'd': 4, 'e': 5 }] } + */ + var merge = createAssigner(function(object, source, srcIndex) { + baseMerge(object, source, srcIndex); + }); - /** Used to compose unicode capture groups. */ - var rsApos = "['\u2019]", - rsAstral = '[' + rsAstralRange + ']', - rsBreak = '[' + rsBreakRange + ']', - rsCombo = '[' + rsComboRange + ']', - rsDigits = '\\d+', - rsDingbat = '[' + rsDingbatRange + ']', - rsLower = '[' + rsLowerRange + ']', - rsMisc = '[^' + rsAstralRange + rsBreakRange + rsDigits + rsDingbatRange + rsLowerRange + rsUpperRange + ']', - rsFitz = '\\ud83c[\\udffb-\\udfff]', - rsModifier = '(?:' + rsCombo + '|' + rsFitz + ')', - rsNonAstral = '[^' + rsAstralRange + ']', - rsRegional = '(?:\\ud83c[\\udde6-\\uddff]){2}', - rsSurrPair = '[\\ud800-\\udbff][\\udc00-\\udfff]', - rsUpper = '[' + rsUpperRange + ']', - rsZWJ = '\\u200d'; + /** + * This method is like `_.merge` except that it accepts `customizer` which + * is invoked to produce the merged values of the destination and source + * properties. If `customizer` returns `undefined`, merging is handled by the + * method instead. The `customizer` is invoked with six arguments: + * (objValue, srcValue, key, object, source, stack). + * + * **Note:** This method mutates `object`. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Object + * @param {Object} object The destination object. + * @param {...Object} sources The source objects. + * @param {Function} customizer The function to customize assigned values. + * @returns {Object} Returns `object`. + * @example + * + * function customizer(objValue, srcValue) { + * if (_.isArray(objValue)) { + * return objValue.concat(srcValue); + * } + * } + * + * var object = { 'a': [1], 'b': [2] }; + * var other = { 'a': [3], 'b': [4] }; + * + * _.mergeWith(object, other, customizer); + * // => { 'a': [1, 3], 'b': [2, 4] } + */ + var mergeWith = createAssigner(function(object, source, srcIndex, customizer) { + baseMerge(object, source, srcIndex, customizer); + }); - /** Used to compose unicode regexes. */ - var rsMiscLower = '(?:' + rsLower + '|' + rsMisc + ')', - rsMiscUpper = '(?:' + rsUpper + '|' + rsMisc + ')', - rsOptContrLower = '(?:' + rsApos + '(?:d|ll|m|re|s|t|ve))?', - rsOptContrUpper = '(?:' + rsApos + '(?:D|LL|M|RE|S|T|VE))?', - reOptMod = rsModifier + '?', - rsOptVar = '[' + rsVarRange + ']?', - rsOptJoin = '(?:' + rsZWJ + '(?:' + [rsNonAstral, rsRegional, rsSurrPair].join('|') + ')' + rsOptVar + reOptMod + ')*', - rsOrdLower = '\\d*(?:1st|2nd|3rd|(?![123])\\dth)(?=\\b|[A-Z_])', - rsOrdUpper = '\\d*(?:1ST|2ND|3RD|(?![123])\\dTH)(?=\\b|[a-z_])', - rsSeq = rsOptVar + reOptMod + rsOptJoin, - rsEmoji = '(?:' + [rsDingbat, rsRegional, rsSurrPair].join('|') + ')' + rsSeq, - rsSymbol = '(?:' + [rsNonAstral + rsCombo + '?', rsCombo, rsRegional, rsSurrPair, rsAstral].join('|') + ')'; + /** + * The opposite of `_.pick`; this method creates an object composed of the + * own and inherited enumerable property paths of `object` that are not omitted. + * + * **Note:** This method is considerably slower than `_.pick`. + * + * @static + * @since 0.1.0 + * @memberOf _ + * @category Object + * @param {Object} object The source object. + * @param {...(string|string[])} [paths] The property paths to omit. + * @returns {Object} Returns the new object. + * @example + * + * var object = { 'a': 1, 'b': '2', 'c': 3 }; + * + * _.omit(object, ['a', 'c']); + * // => { 'b': '2' } + */ + var omit = flatRest(function(object, paths) { + var result = {}; + if (object == null) { + return result; + } + var isDeep = false; + paths = arrayMap(paths, function(path) { + path = castPath(path, object); + isDeep || (isDeep = path.length > 1); + return path; + }); + copyObject(object, getAllKeysIn(object), result); + if (isDeep) { + result = baseClone(result, CLONE_DEEP_FLAG | CLONE_FLAT_FLAG | CLONE_SYMBOLS_FLAG, customOmitClone); + } + var length = paths.length; + while (length--) { + baseUnset(result, paths[length]); + } + return result; + }); - /** Used to match apostrophes. */ - var reApos = RegExp(rsApos, 'g'); + /** + * The opposite of `_.pickBy`; this method creates an object composed of + * the own and inherited enumerable string keyed properties of `object` that + * `predicate` doesn't return truthy for. The predicate is invoked with two + * arguments: (value, key). + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Object + * @param {Object} object The source object. + * @param {Function} [predicate=_.identity] The function invoked per property. + * @returns {Object} Returns the new object. + * @example + * + * var object = { 'a': 1, 'b': '2', 'c': 3 }; + * + * _.omitBy(object, _.isNumber); + * // => { 'b': '2' } + */ + function omitBy(object, predicate) { + return pickBy(object, negate(getIteratee(predicate))); + } - /** - * Used to match [combining diacritical marks](https://en.wikipedia.org/wiki/Combining_Diacritical_Marks) and - * [combining diacritical marks for symbols](https://en.wikipedia.org/wiki/Combining_Diacritical_Marks_for_Symbols). - */ - var reComboMark = RegExp(rsCombo, 'g'); + /** + * Creates an object composed of the picked `object` properties. + * + * @static + * @since 0.1.0 + * @memberOf _ + * @category Object + * @param {Object} object The source object. + * @param {...(string|string[])} [paths] The property paths to pick. + * @returns {Object} Returns the new object. + * @example + * + * var object = { 'a': 1, 'b': '2', 'c': 3 }; + * + * _.pick(object, ['a', 'c']); + * // => { 'a': 1, 'c': 3 } + */ + var pick = flatRest(function(object, paths) { + return object == null ? {} : basePick(object, paths); + }); - /** Used to match [string symbols](https://mathiasbynens.be/notes/javascript-unicode). */ - var reUnicode = RegExp(rsFitz + '(?=' + rsFitz + ')|' + rsSymbol + rsSeq, 'g'); + /** + * Creates an object composed of the `object` properties `predicate` returns + * truthy for. The predicate is invoked with two arguments: (value, key). + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Object + * @param {Object} object The source object. + * @param {Function} [predicate=_.identity] The function invoked per property. + * @returns {Object} Returns the new object. + * @example + * + * var object = { 'a': 1, 'b': '2', 'c': 3 }; + * + * _.pickBy(object, _.isNumber); + * // => { 'a': 1, 'c': 3 } + */ + function pickBy(object, predicate) { + if (object == null) { + return {}; + } + var props = arrayMap(getAllKeysIn(object), function(prop) { + return [prop]; + }); + predicate = getIteratee(predicate); + return basePickBy(object, props, function(value, path) { + return predicate(value, path[0]); + }); + } - /** Used to match complex or compound words. */ - var reUnicodeWord = RegExp([ - rsUpper + '?' + rsLower + '+' + rsOptContrLower + '(?=' + [rsBreak, rsUpper, '$'].join('|') + ')', - rsMiscUpper + '+' + rsOptContrUpper + '(?=' + [rsBreak, rsUpper + rsMiscLower, '$'].join('|') + ')', - rsUpper + '?' + rsMiscLower + '+' + rsOptContrLower, - rsUpper + '+' + rsOptContrUpper, - rsOrdUpper, - rsOrdLower, - rsDigits, - rsEmoji - ].join('|'), 'g'); + /** + * This method is like `_.get` except that if the resolved value is a + * function it's invoked with the `this` binding of its parent object and + * its result is returned. + * + * @static + * @since 0.1.0 + * @memberOf _ + * @category Object + * @param {Object} object The object to query. + * @param {Array|string} path The path of the property to resolve. + * @param {*} [defaultValue] The value returned for `undefined` resolved values. + * @returns {*} Returns the resolved value. + * @example + * + * var object = { 'a': [{ 'b': { 'c1': 3, 'c2': _.constant(4) } }] }; + * + * _.result(object, 'a[0].b.c1'); + * // => 3 + * + * _.result(object, 'a[0].b.c2'); + * // => 4 + * + * _.result(object, 'a[0].b.c3', 'default'); + * // => 'default' + * + * _.result(object, 'a[0].b.c3', _.constant('default')); + * // => 'default' + */ + function result(object, path, defaultValue) { + path = castPath(path, object); - /** Used to detect strings with [zero-width joiners or code points from the astral planes](http://eev.ee/blog/2015/09/12/dark-corners-of-unicode/). */ - var reHasUnicode = RegExp('[' + rsZWJ + rsAstralRange + rsComboRange + rsVarRange + ']'); + var index = -1, + length = path.length; - /** Used to detect strings that need a more robust regexp to match words. */ - var reHasUnicodeWord = /[a-z][A-Z]|[A-Z]{2}[a-z]|[0-9][a-zA-Z]|[a-zA-Z][0-9]|[^a-zA-Z0-9 ]/; + // Ensure the loop is entered when path is empty. + if (!length) { + length = 1; + object = undefined; + } + while (++index < length) { + var value = object == null ? undefined : object[toKey(path[index])]; + if (value === undefined) { + index = length; + value = defaultValue; + } + object = isFunction(value) ? value.call(object) : value; + } + return object; + } - /** Used to assign default `context` object properties. */ - var contextProps = [ - 'Array', 'Buffer', 'DataView', 'Date', 'Error', 'Float32Array', 'Float64Array', - 'Function', 'Int8Array', 'Int16Array', 'Int32Array', 'Map', 'Math', 'Object', - 'Promise', 'RegExp', 'Set', 'String', 'Symbol', 'TypeError', 'Uint8Array', - 'Uint8ClampedArray', 'Uint16Array', 'Uint32Array', 'WeakMap', - '_', 'clearTimeout', 'isFinite', 'parseInt', 'setTimeout' - ]; + /** + * Sets the value at `path` of `object`. If a portion of `path` doesn't exist, + * it's created. Arrays are created for missing index properties while objects + * are created for all other missing properties. Use `_.setWith` to customize + * `path` creation. + * + * **Note:** This method mutates `object`. + * + * @static + * @memberOf _ + * @since 3.7.0 + * @category Object + * @param {Object} object The object to modify. + * @param {Array|string} path The path of the property to set. + * @param {*} value The value to set. + * @returns {Object} Returns `object`. + * @example + * + * var object = { 'a': [{ 'b': { 'c': 3 } }] }; + * + * _.set(object, 'a[0].b.c', 4); + * console.log(object.a[0].b.c); + * // => 4 + * + * _.set(object, ['x', '0', 'y', 'z'], 5); + * console.log(object.x[0].y.z); + * // => 5 + */ + function set(object, path, value) { + return object == null ? object : baseSet(object, path, value); + } - /** Used to make template sourceURLs easier to identify. */ - var templateCounter = -1; + /** + * This method is like `_.set` except that it accepts `customizer` which is + * invoked to produce the objects of `path`. If `customizer` returns `undefined` + * path creation is handled by the method instead. The `customizer` is invoked + * with three arguments: (nsValue, key, nsObject). + * + * **Note:** This method mutates `object`. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Object + * @param {Object} object The object to modify. + * @param {Array|string} path The path of the property to set. + * @param {*} value The value to set. + * @param {Function} [customizer] The function to customize assigned values. + * @returns {Object} Returns `object`. + * @example + * + * var object = {}; + * + * _.setWith(object, '[0][1]', 'a', Object); + * // => { '0': { '1': 'a' } } + */ + function setWith(object, path, value, customizer) { + customizer = typeof customizer == 'function' ? customizer : undefined; + return object == null ? object : baseSet(object, path, value, customizer); + } - /** Used to identify `toStringTag` values of typed arrays. */ - var typedArrayTags = {}; - typedArrayTags[float32Tag] = typedArrayTags[float64Tag] = - typedArrayTags[int8Tag] = typedArrayTags[int16Tag] = - typedArrayTags[int32Tag] = typedArrayTags[uint8Tag] = - typedArrayTags[uint8ClampedTag] = typedArrayTags[uint16Tag] = - typedArrayTags[uint32Tag] = true; - typedArrayTags[argsTag] = typedArrayTags[arrayTag] = - typedArrayTags[arrayBufferTag] = typedArrayTags[boolTag] = - typedArrayTags[dataViewTag] = typedArrayTags[dateTag] = - typedArrayTags[errorTag] = typedArrayTags[funcTag] = - typedArrayTags[mapTag] = typedArrayTags[numberTag] = - typedArrayTags[objectTag] = typedArrayTags[regexpTag] = - typedArrayTags[setTag] = typedArrayTags[stringTag] = - typedArrayTags[weakMapTag] = false; + /** + * Creates an array of own enumerable string keyed-value pairs for `object` + * which can be consumed by `_.fromPairs`. If `object` is a map or set, its + * entries are returned. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @alias entries + * @category Object + * @param {Object} object The object to query. + * @returns {Array} Returns the key-value pairs. + * @example + * + * function Foo() { + * this.a = 1; + * this.b = 2; + * } + * + * Foo.prototype.c = 3; + * + * _.toPairs(new Foo); + * // => [['a', 1], ['b', 2]] (iteration order is not guaranteed) + */ + var toPairs = createToPairs(keys); - /** Used to identify `toStringTag` values supported by `_.clone`. */ - var cloneableTags = {}; - cloneableTags[argsTag] = cloneableTags[arrayTag] = - cloneableTags[arrayBufferTag] = cloneableTags[dataViewTag] = - cloneableTags[boolTag] = cloneableTags[dateTag] = - cloneableTags[float32Tag] = cloneableTags[float64Tag] = - cloneableTags[int8Tag] = cloneableTags[int16Tag] = - cloneableTags[int32Tag] = cloneableTags[mapTag] = - cloneableTags[numberTag] = cloneableTags[objectTag] = - cloneableTags[regexpTag] = cloneableTags[setTag] = - cloneableTags[stringTag] = cloneableTags[symbolTag] = - cloneableTags[uint8Tag] = cloneableTags[uint8ClampedTag] = - cloneableTags[uint16Tag] = cloneableTags[uint32Tag] = true; - cloneableTags[errorTag] = cloneableTags[funcTag] = - cloneableTags[weakMapTag] = false; + /** + * Creates an array of own and inherited enumerable string keyed-value pairs + * for `object` which can be consumed by `_.fromPairs`. If `object` is a map + * or set, its entries are returned. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @alias entriesIn + * @category Object + * @param {Object} object The object to query. + * @returns {Array} Returns the key-value pairs. + * @example + * + * function Foo() { + * this.a = 1; + * this.b = 2; + * } + * + * Foo.prototype.c = 3; + * + * _.toPairsIn(new Foo); + * // => [['a', 1], ['b', 2], ['c', 3]] (iteration order is not guaranteed) + */ + var toPairsIn = createToPairs(keysIn); - /** Used to map Latin Unicode letters to basic Latin letters. */ - var deburredLetters = { - // Latin-1 Supplement block. - '\xc0': 'A', '\xc1': 'A', '\xc2': 'A', '\xc3': 'A', '\xc4': 'A', '\xc5': 'A', - '\xe0': 'a', '\xe1': 'a', '\xe2': 'a', '\xe3': 'a', '\xe4': 'a', '\xe5': 'a', - '\xc7': 'C', '\xe7': 'c', - '\xd0': 'D', '\xf0': 'd', - '\xc8': 'E', '\xc9': 'E', '\xca': 'E', '\xcb': 'E', - '\xe8': 'e', '\xe9': 'e', '\xea': 'e', '\xeb': 'e', - '\xcc': 'I', '\xcd': 'I', '\xce': 'I', '\xcf': 'I', - '\xec': 'i', '\xed': 'i', '\xee': 'i', '\xef': 'i', - '\xd1': 'N', '\xf1': 'n', - '\xd2': 'O', '\xd3': 'O', '\xd4': 'O', '\xd5': 'O', '\xd6': 'O', '\xd8': 'O', - '\xf2': 'o', '\xf3': 'o', '\xf4': 'o', '\xf5': 'o', '\xf6': 'o', '\xf8': 'o', - '\xd9': 'U', '\xda': 'U', '\xdb': 'U', '\xdc': 'U', - '\xf9': 'u', '\xfa': 'u', '\xfb': 'u', '\xfc': 'u', - '\xdd': 'Y', '\xfd': 'y', '\xff': 'y', - '\xc6': 'Ae', '\xe6': 'ae', - '\xde': 'Th', '\xfe': 'th', - '\xdf': 'ss', - // Latin Extended-A block. - '\u0100': 'A', '\u0102': 'A', '\u0104': 'A', - '\u0101': 'a', '\u0103': 'a', '\u0105': 'a', - '\u0106': 'C', '\u0108': 'C', '\u010a': 'C', '\u010c': 'C', - '\u0107': 'c', '\u0109': 'c', '\u010b': 'c', '\u010d': 'c', - '\u010e': 'D', '\u0110': 'D', '\u010f': 'd', '\u0111': 'd', - '\u0112': 'E', '\u0114': 'E', '\u0116': 'E', '\u0118': 'E', '\u011a': 'E', - '\u0113': 'e', '\u0115': 'e', '\u0117': 'e', '\u0119': 'e', '\u011b': 'e', - '\u011c': 'G', '\u011e': 'G', '\u0120': 'G', '\u0122': 'G', - '\u011d': 'g', '\u011f': 'g', '\u0121': 'g', '\u0123': 'g', - '\u0124': 'H', '\u0126': 'H', '\u0125': 'h', '\u0127': 'h', - '\u0128': 'I', '\u012a': 'I', '\u012c': 'I', '\u012e': 'I', '\u0130': 'I', - '\u0129': 'i', '\u012b': 'i', '\u012d': 'i', '\u012f': 'i', '\u0131': 'i', - '\u0134': 'J', '\u0135': 'j', - '\u0136': 'K', '\u0137': 'k', '\u0138': 'k', - '\u0139': 'L', '\u013b': 'L', '\u013d': 'L', '\u013f': 'L', '\u0141': 'L', - '\u013a': 'l', '\u013c': 'l', '\u013e': 'l', '\u0140': 'l', '\u0142': 'l', - '\u0143': 'N', '\u0145': 'N', '\u0147': 'N', '\u014a': 'N', - '\u0144': 'n', '\u0146': 'n', '\u0148': 'n', '\u014b': 'n', - '\u014c': 'O', '\u014e': 'O', '\u0150': 'O', - '\u014d': 'o', '\u014f': 'o', '\u0151': 'o', - '\u0154': 'R', '\u0156': 'R', '\u0158': 'R', - '\u0155': 'r', '\u0157': 'r', '\u0159': 'r', - '\u015a': 'S', '\u015c': 'S', '\u015e': 'S', '\u0160': 'S', - '\u015b': 's', '\u015d': 's', '\u015f': 's', '\u0161': 's', - '\u0162': 'T', '\u0164': 'T', '\u0166': 'T', - '\u0163': 't', '\u0165': 't', '\u0167': 't', - '\u0168': 'U', '\u016a': 'U', '\u016c': 'U', '\u016e': 'U', '\u0170': 'U', '\u0172': 'U', - '\u0169': 'u', '\u016b': 'u', '\u016d': 'u', '\u016f': 'u', '\u0171': 'u', '\u0173': 'u', - '\u0174': 'W', '\u0175': 'w', - '\u0176': 'Y', '\u0177': 'y', '\u0178': 'Y', - '\u0179': 'Z', '\u017b': 'Z', '\u017d': 'Z', - '\u017a': 'z', '\u017c': 'z', '\u017e': 'z', - '\u0132': 'IJ', '\u0133': 'ij', - '\u0152': 'Oe', '\u0153': 'oe', - '\u0149': "'n", '\u017f': 's' - }; + /** + * An alternative to `_.reduce`; this method transforms `object` to a new + * `accumulator` object which is the result of running each of its own + * enumerable string keyed properties thru `iteratee`, with each invocation + * potentially mutating the `accumulator` object. If `accumulator` is not + * provided, a new object with the same `[[Prototype]]` will be used. The + * iteratee is invoked with four arguments: (accumulator, value, key, object). + * Iteratee functions may exit iteration early by explicitly returning `false`. + * + * @static + * @memberOf _ + * @since 1.3.0 + * @category Object + * @param {Object} object The object to iterate over. + * @param {Function} [iteratee=_.identity] The function invoked per iteration. + * @param {*} [accumulator] The custom accumulator value. + * @returns {*} Returns the accumulated value. + * @example + * + * _.transform([2, 3, 4], function(result, n) { + * result.push(n *= n); + * return n % 2 == 0; + * }, []); + * // => [4, 9] + * + * _.transform({ 'a': 1, 'b': 2, 'c': 1 }, function(result, value, key) { + * (result[value] || (result[value] = [])).push(key); + * }, {}); + * // => { '1': ['a', 'c'], '2': ['b'] } + */ + function transform(object, iteratee, accumulator) { + var isArr = isArray(object), + isArrLike = isArr || isBuffer(object) || isTypedArray(object); - /** Used to map characters to HTML entities. */ - var htmlEscapes = { - '&': '&', - '<': '<', - '>': '>', - '"': '"', - "'": ''' - }; + iteratee = getIteratee(iteratee, 4); + if (accumulator == null) { + var Ctor = object && object.constructor; + if (isArrLike) { + accumulator = isArr ? new Ctor : []; + } + else if (isObject(object)) { + accumulator = isFunction(Ctor) ? baseCreate(getPrototype(object)) : {}; + } + else { + accumulator = {}; + } + } + (isArrLike ? arrayEach : baseForOwn)(object, function(value, index, object) { + return iteratee(accumulator, value, index, object); + }); + return accumulator; + } - /** Used to map HTML entities to characters. */ - var htmlUnescapes = { - '&': '&', - '<': '<', - '>': '>', - '"': '"', - ''': "'" - }; + /** + * Removes the property at `path` of `object`. + * + * **Note:** This method mutates `object`. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Object + * @param {Object} object The object to modify. + * @param {Array|string} path The path of the property to unset. + * @returns {boolean} Returns `true` if the property is deleted, else `false`. + * @example + * + * var object = { 'a': [{ 'b': { 'c': 7 } }] }; + * _.unset(object, 'a[0].b.c'); + * // => true + * + * console.log(object); + * // => { 'a': [{ 'b': {} }] }; + * + * _.unset(object, ['a', '0', 'b', 'c']); + * // => true + * + * console.log(object); + * // => { 'a': [{ 'b': {} }] }; + */ + function unset(object, path) { + return object == null ? true : baseUnset(object, path); + } - /** Used to escape characters for inclusion in compiled string literals. */ - var stringEscapes = { - '\\': '\\', - "'": "'", - '\n': 'n', - '\r': 'r', - '\u2028': 'u2028', - '\u2029': 'u2029' - }; + /** + * This method is like `_.set` except that accepts `updater` to produce the + * value to set. Use `_.updateWith` to customize `path` creation. The `updater` + * is invoked with one argument: (value). + * + * **Note:** This method mutates `object`. + * + * @static + * @memberOf _ + * @since 4.6.0 + * @category Object + * @param {Object} object The object to modify. + * @param {Array|string} path The path of the property to set. + * @param {Function} updater The function to produce the updated value. + * @returns {Object} Returns `object`. + * @example + * + * var object = { 'a': [{ 'b': { 'c': 3 } }] }; + * + * _.update(object, 'a[0].b.c', function(n) { return n * n; }); + * console.log(object.a[0].b.c); + * // => 9 + * + * _.update(object, 'x[0].y.z', function(n) { return n ? n + 1 : 0; }); + * console.log(object.x[0].y.z); + * // => 0 + */ + function update(object, path, updater) { + return object == null ? object : baseUpdate(object, path, castFunction(updater)); + } - /** Built-in method references without a dependency on `root`. */ - var freeParseFloat = parseFloat, - freeParseInt = parseInt; + /** + * This method is like `_.update` except that it accepts `customizer` which is + * invoked to produce the objects of `path`. If `customizer` returns `undefined` + * path creation is handled by the method instead. The `customizer` is invoked + * with three arguments: (nsValue, key, nsObject). + * + * **Note:** This method mutates `object`. + * + * @static + * @memberOf _ + * @since 4.6.0 + * @category Object + * @param {Object} object The object to modify. + * @param {Array|string} path The path of the property to set. + * @param {Function} updater The function to produce the updated value. + * @param {Function} [customizer] The function to customize assigned values. + * @returns {Object} Returns `object`. + * @example + * + * var object = {}; + * + * _.updateWith(object, '[0][1]', _.constant('a'), Object); + * // => { '0': { '1': 'a' } } + */ + function updateWith(object, path, updater, customizer) { + customizer = typeof customizer == 'function' ? customizer : undefined; + return object == null ? object : baseUpdate(object, path, castFunction(updater), customizer); + } - /** Detect free variable `global` from Node.js. */ - var freeGlobal = typeof global == 'object' && global && global.Object === Object && global; + /** + * Creates an array of the own enumerable string keyed property values of `object`. + * + * **Note:** Non-object values are coerced to objects. + * + * @static + * @since 0.1.0 + * @memberOf _ + * @category Object + * @param {Object} object The object to query. + * @returns {Array} Returns the array of property values. + * @example + * + * function Foo() { + * this.a = 1; + * this.b = 2; + * } + * + * Foo.prototype.c = 3; + * + * _.values(new Foo); + * // => [1, 2] (iteration order is not guaranteed) + * + * _.values('hi'); + * // => ['h', 'i'] + */ + function values(object) { + return object == null ? [] : baseValues(object, keys(object)); + } - /** Detect free variable `self`. */ - var freeSelf = typeof self == 'object' && self && self.Object === Object && self; + /** + * Creates an array of the own and inherited enumerable string keyed property + * values of `object`. + * + * **Note:** Non-object values are coerced to objects. + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category Object + * @param {Object} object The object to query. + * @returns {Array} Returns the array of property values. + * @example + * + * function Foo() { + * this.a = 1; + * this.b = 2; + * } + * + * Foo.prototype.c = 3; + * + * _.valuesIn(new Foo); + * // => [1, 2, 3] (iteration order is not guaranteed) + */ + function valuesIn(object) { + return object == null ? [] : baseValues(object, keysIn(object)); + } - /** Used as a reference to the global object. */ - var root = freeGlobal || freeSelf || Function('return this')(); + /*------------------------------------------------------------------------*/ - /** Detect free variable `exports`. */ - var freeExports = typeof exports == 'object' && exports && !exports.nodeType && exports; + /** + * Clamps `number` within the inclusive `lower` and `upper` bounds. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Number + * @param {number} number The number to clamp. + * @param {number} [lower] The lower bound. + * @param {number} upper The upper bound. + * @returns {number} Returns the clamped number. + * @example + * + * _.clamp(-10, -5, 5); + * // => -5 + * + * _.clamp(10, -5, 5); + * // => 5 + */ + function clamp(number, lower, upper) { + if (upper === undefined) { + upper = lower; + lower = undefined; + } + if (upper !== undefined) { + upper = toNumber(upper); + upper = upper === upper ? upper : 0; + } + if (lower !== undefined) { + lower = toNumber(lower); + lower = lower === lower ? lower : 0; + } + return baseClamp(toNumber(number), lower, upper); + } - /** Detect free variable `module`. */ - var freeModule = freeExports && typeof module == 'object' && module && !module.nodeType && module; + /** + * Checks if `n` is between `start` and up to, but not including, `end`. If + * `end` is not specified, it's set to `start` with `start` then set to `0`. + * If `start` is greater than `end` the params are swapped to support + * negative ranges. + * + * @static + * @memberOf _ + * @since 3.3.0 + * @category Number + * @param {number} number The number to check. + * @param {number} [start=0] The start of the range. + * @param {number} end The end of the range. + * @returns {boolean} Returns `true` if `number` is in the range, else `false`. + * @see _.range, _.rangeRight + * @example + * + * _.inRange(3, 2, 4); + * // => true + * + * _.inRange(4, 8); + * // => true + * + * _.inRange(4, 2); + * // => false + * + * _.inRange(2, 2); + * // => false + * + * _.inRange(1.2, 2); + * // => true + * + * _.inRange(5.2, 4); + * // => false + * + * _.inRange(-3, -2, -6); + * // => true + */ + function inRange(number, start, end) { + start = toFinite(start); + if (end === undefined) { + end = start; + start = 0; + } else { + end = toFinite(end); + } + number = toNumber(number); + return baseInRange(number, start, end); + } - /** Detect the popular CommonJS extension `module.exports`. */ - var moduleExports = freeModule && freeModule.exports === freeExports; + /** + * Produces a random number between the inclusive `lower` and `upper` bounds. + * If only one argument is provided a number between `0` and the given number + * is returned. If `floating` is `true`, or either `lower` or `upper` are + * floats, a floating-point number is returned instead of an integer. + * + * **Note:** JavaScript follows the IEEE-754 standard for resolving + * floating-point values which can produce unexpected results. + * + * @static + * @memberOf _ + * @since 0.7.0 + * @category Number + * @param {number} [lower=0] The lower bound. + * @param {number} [upper=1] The upper bound. + * @param {boolean} [floating] Specify returning a floating-point number. + * @returns {number} Returns the random number. + * @example + * + * _.random(0, 5); + * // => an integer between 0 and 5 + * + * _.random(5); + * // => also an integer between 0 and 5 + * + * _.random(5, true); + * // => a floating-point number between 0 and 5 + * + * _.random(1.2, 5.2); + * // => a floating-point number between 1.2 and 5.2 + */ + function random(lower, upper, floating) { + if (floating && typeof floating != 'boolean' && isIterateeCall(lower, upper, floating)) { + upper = floating = undefined; + } + if (floating === undefined) { + if (typeof upper == 'boolean') { + floating = upper; + upper = undefined; + } + else if (typeof lower == 'boolean') { + floating = lower; + lower = undefined; + } + } + if (lower === undefined && upper === undefined) { + lower = 0; + upper = 1; + } + else { + lower = toFinite(lower); + if (upper === undefined) { + upper = lower; + lower = 0; + } else { + upper = toFinite(upper); + } + } + if (lower > upper) { + var temp = lower; + lower = upper; + upper = temp; + } + if (floating || lower % 1 || upper % 1) { + var rand = nativeRandom(); + return nativeMin(lower + (rand * (upper - lower + freeParseFloat('1e-' + ((rand + '').length - 1)))), upper); + } + return baseRandom(lower, upper); + } - /** Detect free variable `process` from Node.js. */ - var freeProcess = moduleExports && freeGlobal.process; + /*------------------------------------------------------------------------*/ - /** Used to access faster Node.js helpers. */ - var nodeUtil = (function() { - try { - // Use `util.types` for Node.js 10+. - var types = freeModule && freeModule.require && freeModule.require('util').types; + /** + * Converts `string` to [camel case](https://en.wikipedia.org/wiki/CamelCase). + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category String + * @param {string} [string=''] The string to convert. + * @returns {string} Returns the camel cased string. + * @example + * + * _.camelCase('Foo Bar'); + * // => 'fooBar' + * + * _.camelCase('--foo-bar--'); + * // => 'fooBar' + * + * _.camelCase('__FOO_BAR__'); + * // => 'fooBar' + */ + var camelCase = createCompounder(function(result, word, index) { + word = word.toLowerCase(); + return result + (index ? capitalize(word) : word); + }); - if (types) { - return types; - } + /** + * Converts the first character of `string` to upper case and the remaining + * to lower case. + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category String + * @param {string} [string=''] The string to capitalize. + * @returns {string} Returns the capitalized string. + * @example + * + * _.capitalize('FRED'); + * // => 'Fred' + */ + function capitalize(string) { + return upperFirst(toString(string).toLowerCase()); + } - // Legacy `process.binding('util')` for Node.js < 10. - return freeProcess && freeProcess.binding && freeProcess.binding('util'); - } catch (e) {} - }()); + /** + * Deburrs `string` by converting + * [Latin-1 Supplement](https://en.wikipedia.org/wiki/Latin-1_Supplement_(Unicode_block)#Character_table) + * and [Latin Extended-A](https://en.wikipedia.org/wiki/Latin_Extended-A) + * letters to basic Latin letters and removing + * [combining diacritical marks](https://en.wikipedia.org/wiki/Combining_Diacritical_Marks). + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category String + * @param {string} [string=''] The string to deburr. + * @returns {string} Returns the deburred string. + * @example + * + * _.deburr('déjà vu'); + * // => 'deja vu' + */ + function deburr(string) { + string = toString(string); + return string && string.replace(reLatin, deburrLetter).replace(reComboMark, ''); + } - /* Node.js helper references. */ - var nodeIsArrayBuffer = nodeUtil && nodeUtil.isArrayBuffer, - nodeIsDate = nodeUtil && nodeUtil.isDate, - nodeIsMap = nodeUtil && nodeUtil.isMap, - nodeIsRegExp = nodeUtil && nodeUtil.isRegExp, - nodeIsSet = nodeUtil && nodeUtil.isSet, - nodeIsTypedArray = nodeUtil && nodeUtil.isTypedArray; + /** + * Checks if `string` ends with the given target string. + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category String + * @param {string} [string=''] The string to inspect. + * @param {string} [target] The string to search for. + * @param {number} [position=string.length] The position to search up to. + * @returns {boolean} Returns `true` if `string` ends with `target`, + * else `false`. + * @example + * + * _.endsWith('abc', 'c'); + * // => true + * + * _.endsWith('abc', 'b'); + * // => false + * + * _.endsWith('abc', 'b', 2); + * // => true + */ + function endsWith(string, target, position) { + string = toString(string); + target = baseToString(target); - /*--------------------------------------------------------------------------*/ + var length = string.length; + position = position === undefined + ? length + : baseClamp(toInteger(position), 0, length); - /** - * A faster alternative to `Function#apply`, this function invokes `func` - * with the `this` binding of `thisArg` and the arguments of `args`. - * - * @private - * @param {Function} func The function to invoke. - * @param {*} thisArg The `this` binding of `func`. - * @param {Array} args The arguments to invoke `func` with. - * @returns {*} Returns the result of `func`. - */ - function apply(func, thisArg, args) { - switch (args.length) { - case 0: return func.call(thisArg); - case 1: return func.call(thisArg, args[0]); - case 2: return func.call(thisArg, args[0], args[1]); - case 3: return func.call(thisArg, args[0], args[1], args[2]); + var end = position; + position -= target.length; + return position >= 0 && string.slice(position, end) == target; } - return func.apply(thisArg, args); - } - /** - * A specialized version of `baseAggregator` for arrays. - * - * @private - * @param {Array} [array] The array to iterate over. - * @param {Function} setter The function to set `accumulator` values. - * @param {Function} iteratee The iteratee to transform keys. - * @param {Object} accumulator The initial aggregated object. - * @returns {Function} Returns `accumulator`. - */ - function arrayAggregator(array, setter, iteratee, accumulator) { - var index = -1, - length = array == null ? 0 : array.length; + /** + * Converts the characters "&", "<", ">", '"', and "'" in `string` to their + * corresponding HTML entities. + * + * **Note:** No other characters are escaped. To escape additional + * characters use a third-party library like [_he_](https://mths.be/he). + * + * Though the ">" character is escaped for symmetry, characters like + * ">" and "/" don't need escaping in HTML and have no special meaning + * unless they're part of a tag or unquoted attribute value. See + * [Mathias Bynens's article](https://mathiasbynens.be/notes/ambiguous-ampersands) + * (under "semi-related fun fact") for more details. + * + * When working with HTML you should always + * [quote attribute values](http://wonko.com/post/html-escaping) to reduce + * XSS vectors. + * + * @static + * @since 0.1.0 + * @memberOf _ + * @category String + * @param {string} [string=''] The string to escape. + * @returns {string} Returns the escaped string. + * @example + * + * _.escape('fred, barney, & pebbles'); + * // => 'fred, barney, & pebbles' + */ + function escape(string) { + string = toString(string); + return (string && reHasUnescapedHtml.test(string)) + ? string.replace(reUnescapedHtml, escapeHtmlChar) + : string; + } - while (++index < length) { - var value = array[index]; - setter(accumulator, value, iteratee(value), array); + /** + * Escapes the `RegExp` special characters "^", "$", "\", ".", "*", "+", + * "?", "(", ")", "[", "]", "{", "}", and "|" in `string`. + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category String + * @param {string} [string=''] The string to escape. + * @returns {string} Returns the escaped string. + * @example + * + * _.escapeRegExp('[lodash](https://lodash.com/)'); + * // => '\[lodash\]\(https://lodash\.com/\)' + */ + function escapeRegExp(string) { + string = toString(string); + return (string && reHasRegExpChar.test(string)) + ? string.replace(reRegExpChar, '\\$&') + : string; } - return accumulator; - } - /** - * A specialized version of `_.forEach` for arrays without support for - * iteratee shorthands. - * - * @private - * @param {Array} [array] The array to iterate over. - * @param {Function} iteratee The function invoked per iteration. - * @returns {Array} Returns `array`. - */ - function arrayEach(array, iteratee) { - var index = -1, - length = array == null ? 0 : array.length; + /** + * Converts `string` to + * [kebab case](https://en.wikipedia.org/wiki/Letter_case#Special_case_styles). + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category String + * @param {string} [string=''] The string to convert. + * @returns {string} Returns the kebab cased string. + * @example + * + * _.kebabCase('Foo Bar'); + * // => 'foo-bar' + * + * _.kebabCase('fooBar'); + * // => 'foo-bar' + * + * _.kebabCase('__FOO_BAR__'); + * // => 'foo-bar' + */ + var kebabCase = createCompounder(function(result, word, index) { + return result + (index ? '-' : '') + word.toLowerCase(); + }); - while (++index < length) { - if (iteratee(array[index], index, array) === false) { - break; - } - } - return array; - } + /** + * Converts `string`, as space separated words, to lower case. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category String + * @param {string} [string=''] The string to convert. + * @returns {string} Returns the lower cased string. + * @example + * + * _.lowerCase('--Foo-Bar--'); + * // => 'foo bar' + * + * _.lowerCase('fooBar'); + * // => 'foo bar' + * + * _.lowerCase('__FOO_BAR__'); + * // => 'foo bar' + */ + var lowerCase = createCompounder(function(result, word, index) { + return result + (index ? ' ' : '') + word.toLowerCase(); + }); - /** - * A specialized version of `_.forEachRight` for arrays without support for - * iteratee shorthands. - * - * @private - * @param {Array} [array] The array to iterate over. - * @param {Function} iteratee The function invoked per iteration. - * @returns {Array} Returns `array`. - */ - function arrayEachRight(array, iteratee) { - var length = array == null ? 0 : array.length; + /** + * Converts the first character of `string` to lower case. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category String + * @param {string} [string=''] The string to convert. + * @returns {string} Returns the converted string. + * @example + * + * _.lowerFirst('Fred'); + * // => 'fred' + * + * _.lowerFirst('FRED'); + * // => 'fRED' + */ + var lowerFirst = createCaseFirst('toLowerCase'); + + /** + * Pads `string` on the left and right sides if it's shorter than `length`. + * Padding characters are truncated if they can't be evenly divided by `length`. + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category String + * @param {string} [string=''] The string to pad. + * @param {number} [length=0] The padding length. + * @param {string} [chars=' '] The string used as padding. + * @returns {string} Returns the padded string. + * @example + * + * _.pad('abc', 8); + * // => ' abc ' + * + * _.pad('abc', 8, '_-'); + * // => '_-abc_-_' + * + * _.pad('abc', 3); + * // => 'abc' + */ + function pad(string, length, chars) { + string = toString(string); + length = toInteger(length); - while (length--) { - if (iteratee(array[length], length, array) === false) { - break; + var strLength = length ? stringSize(string) : 0; + if (!length || strLength >= length) { + return string; } + var mid = (length - strLength) / 2; + return ( + createPadding(nativeFloor(mid), chars) + + string + + createPadding(nativeCeil(mid), chars) + ); } - return array; - } - /** - * A specialized version of `_.every` for arrays without support for - * iteratee shorthands. - * - * @private - * @param {Array} [array] The array to iterate over. - * @param {Function} predicate The function invoked per iteration. - * @returns {boolean} Returns `true` if all elements pass the predicate check, - * else `false`. - */ - function arrayEvery(array, predicate) { - var index = -1, - length = array == null ? 0 : array.length; + /** + * Pads `string` on the right side if it's shorter than `length`. Padding + * characters are truncated if they exceed `length`. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category String + * @param {string} [string=''] The string to pad. + * @param {number} [length=0] The padding length. + * @param {string} [chars=' '] The string used as padding. + * @returns {string} Returns the padded string. + * @example + * + * _.padEnd('abc', 6); + * // => 'abc ' + * + * _.padEnd('abc', 6, '_-'); + * // => 'abc_-_' + * + * _.padEnd('abc', 3); + * // => 'abc' + */ + function padEnd(string, length, chars) { + string = toString(string); + length = toInteger(length); - while (++index < length) { - if (!predicate(array[index], index, array)) { - return false; - } + var strLength = length ? stringSize(string) : 0; + return (length && strLength < length) + ? (string + createPadding(length - strLength, chars)) + : string; } - return true; - } - /** - * A specialized version of `_.filter` for arrays without support for - * iteratee shorthands. - * - * @private - * @param {Array} [array] The array to iterate over. - * @param {Function} predicate The function invoked per iteration. - * @returns {Array} Returns the new filtered array. - */ - function arrayFilter(array, predicate) { - var index = -1, - length = array == null ? 0 : array.length, - resIndex = 0, - result = []; + /** + * Pads `string` on the left side if it's shorter than `length`. Padding + * characters are truncated if they exceed `length`. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category String + * @param {string} [string=''] The string to pad. + * @param {number} [length=0] The padding length. + * @param {string} [chars=' '] The string used as padding. + * @returns {string} Returns the padded string. + * @example + * + * _.padStart('abc', 6); + * // => ' abc' + * + * _.padStart('abc', 6, '_-'); + * // => '_-_abc' + * + * _.padStart('abc', 3); + * // => 'abc' + */ + function padStart(string, length, chars) { + string = toString(string); + length = toInteger(length); - while (++index < length) { - var value = array[index]; - if (predicate(value, index, array)) { - result[resIndex++] = value; - } + var strLength = length ? stringSize(string) : 0; + return (length && strLength < length) + ? (createPadding(length - strLength, chars) + string) + : string; } - return result; - } - - /** - * A specialized version of `_.includes` for arrays without support for - * specifying an index to search from. - * - * @private - * @param {Array} [array] The array to inspect. - * @param {*} target The value to search for. - * @returns {boolean} Returns `true` if `target` is found, else `false`. - */ - function arrayIncludes(array, value) { - var length = array == null ? 0 : array.length; - return !!length && baseIndexOf(array, value, 0) > -1; - } - /** - * This function is like `arrayIncludes` except that it accepts a comparator. - * - * @private - * @param {Array} [array] The array to inspect. - * @param {*} target The value to search for. - * @param {Function} comparator The comparator invoked per element. - * @returns {boolean} Returns `true` if `target` is found, else `false`. - */ - function arrayIncludesWith(array, value, comparator) { - var index = -1, - length = array == null ? 0 : array.length; - - while (++index < length) { - if (comparator(value, array[index])) { - return true; + /** + * Converts `string` to an integer of the specified radix. If `radix` is + * `undefined` or `0`, a `radix` of `10` is used unless `value` is a + * hexadecimal, in which case a `radix` of `16` is used. + * + * **Note:** This method aligns with the + * [ES5 implementation](https://es5.github.io/#x15.1.2.2) of `parseInt`. + * + * @static + * @memberOf _ + * @since 1.1.0 + * @category String + * @param {string} string The string to convert. + * @param {number} [radix=10] The radix to interpret `value` by. + * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`. + * @returns {number} Returns the converted integer. + * @example + * + * _.parseInt('08'); + * // => 8 + * + * _.map(['6', '08', '10'], _.parseInt); + * // => [6, 8, 10] + */ + function parseInt(string, radix, guard) { + if (guard || radix == null) { + radix = 0; + } else if (radix) { + radix = +radix; } + return nativeParseInt(toString(string).replace(reTrimStart, ''), radix || 0); } - return false; - } - /** - * A specialized version of `_.map` for arrays without support for iteratee - * shorthands. - * - * @private - * @param {Array} [array] The array to iterate over. - * @param {Function} iteratee The function invoked per iteration. - * @returns {Array} Returns the new mapped array. - */ - function arrayMap(array, iteratee) { - var index = -1, - length = array == null ? 0 : array.length, - result = Array(length); - - while (++index < length) { - result[index] = iteratee(array[index], index, array); + /** + * Repeats the given string `n` times. + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category String + * @param {string} [string=''] The string to repeat. + * @param {number} [n=1] The number of times to repeat the string. + * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`. + * @returns {string} Returns the repeated string. + * @example + * + * _.repeat('*', 3); + * // => '***' + * + * _.repeat('abc', 2); + * // => 'abcabc' + * + * _.repeat('abc', 0); + * // => '' + */ + function repeat(string, n, guard) { + if ((guard ? isIterateeCall(string, n, guard) : n === undefined)) { + n = 1; + } else { + n = toInteger(n); + } + return baseRepeat(toString(string), n); } - return result; - } - /** - * Appends the elements of `values` to `array`. - * - * @private - * @param {Array} array The array to modify. - * @param {Array} values The values to append. - * @returns {Array} Returns `array`. - */ - function arrayPush(array, values) { - var index = -1, - length = values.length, - offset = array.length; + /** + * Replaces matches for `pattern` in `string` with `replacement`. + * + * **Note:** This method is based on + * [`String#replace`](https://mdn.io/String/replace). + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category String + * @param {string} [string=''] The string to modify. + * @param {RegExp|string} pattern The pattern to replace. + * @param {Function|string} replacement The match replacement. + * @returns {string} Returns the modified string. + * @example + * + * _.replace('Hi Fred', 'Fred', 'Barney'); + * // => 'Hi Barney' + */ + function replace() { + var args = arguments, + string = toString(args[0]); - while (++index < length) { - array[offset + index] = values[index]; + return args.length < 3 ? string : string.replace(args[1], args[2]); } - return array; - } - /** - * A specialized version of `_.reduce` for arrays without support for - * iteratee shorthands. - * - * @private - * @param {Array} [array] The array to iterate over. - * @param {Function} iteratee The function invoked per iteration. - * @param {*} [accumulator] The initial value. - * @param {boolean} [initAccum] Specify using the first element of `array` as - * the initial value. - * @returns {*} Returns the accumulated value. - */ - function arrayReduce(array, iteratee, accumulator, initAccum) { - var index = -1, - length = array == null ? 0 : array.length; + /** + * Converts `string` to + * [snake case](https://en.wikipedia.org/wiki/Snake_case). + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category String + * @param {string} [string=''] The string to convert. + * @returns {string} Returns the snake cased string. + * @example + * + * _.snakeCase('Foo Bar'); + * // => 'foo_bar' + * + * _.snakeCase('fooBar'); + * // => 'foo_bar' + * + * _.snakeCase('--FOO-BAR--'); + * // => 'foo_bar' + */ + var snakeCase = createCompounder(function(result, word, index) { + return result + (index ? '_' : '') + word.toLowerCase(); + }); - if (initAccum && length) { - accumulator = array[++index]; - } - while (++index < length) { - accumulator = iteratee(accumulator, array[index], index, array); + /** + * Splits `string` by `separator`. + * + * **Note:** This method is based on + * [`String#split`](https://mdn.io/String/split). + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category String + * @param {string} [string=''] The string to split. + * @param {RegExp|string} separator The separator pattern to split by. + * @param {number} [limit] The length to truncate results to. + * @returns {Array} Returns the string segments. + * @example + * + * _.split('a-b-c', '-', 2); + * // => ['a', 'b'] + */ + function split(string, separator, limit) { + if (limit && typeof limit != 'number' && isIterateeCall(string, separator, limit)) { + separator = limit = undefined; + } + limit = limit === undefined ? MAX_ARRAY_LENGTH : limit >>> 0; + if (!limit) { + return []; + } + string = toString(string); + if (string && ( + typeof separator == 'string' || + (separator != null && !isRegExp(separator)) + )) { + separator = baseToString(separator); + if (!separator && hasUnicode(string)) { + return castSlice(stringToArray(string), 0, limit); + } + } + return string.split(separator, limit); } - return accumulator; - } - /** - * A specialized version of `_.reduceRight` for arrays without support for - * iteratee shorthands. - * - * @private - * @param {Array} [array] The array to iterate over. - * @param {Function} iteratee The function invoked per iteration. - * @param {*} [accumulator] The initial value. - * @param {boolean} [initAccum] Specify using the last element of `array` as - * the initial value. - * @returns {*} Returns the accumulated value. - */ - function arrayReduceRight(array, iteratee, accumulator, initAccum) { - var length = array == null ? 0 : array.length; - if (initAccum && length) { - accumulator = array[--length]; - } - while (length--) { - accumulator = iteratee(accumulator, array[length], length, array); - } - return accumulator; - } + /** + * Converts `string` to + * [start case](https://en.wikipedia.org/wiki/Letter_case#Stylistic_or_specialised_usage). + * + * @static + * @memberOf _ + * @since 3.1.0 + * @category String + * @param {string} [string=''] The string to convert. + * @returns {string} Returns the start cased string. + * @example + * + * _.startCase('--foo-bar--'); + * // => 'Foo Bar' + * + * _.startCase('fooBar'); + * // => 'Foo Bar' + * + * _.startCase('__FOO_BAR__'); + * // => 'FOO BAR' + */ + var startCase = createCompounder(function(result, word, index) { + return result + (index ? ' ' : '') + upperFirst(word); + }); - /** - * A specialized version of `_.some` for arrays without support for iteratee - * shorthands. - * - * @private - * @param {Array} [array] The array to iterate over. - * @param {Function} predicate The function invoked per iteration. - * @returns {boolean} Returns `true` if any element passes the predicate check, - * else `false`. - */ - function arraySome(array, predicate) { - var index = -1, - length = array == null ? 0 : array.length; + /** + * Checks if `string` starts with the given target string. + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category String + * @param {string} [string=''] The string to inspect. + * @param {string} [target] The string to search for. + * @param {number} [position=0] The position to search from. + * @returns {boolean} Returns `true` if `string` starts with `target`, + * else `false`. + * @example + * + * _.startsWith('abc', 'a'); + * // => true + * + * _.startsWith('abc', 'b'); + * // => false + * + * _.startsWith('abc', 'b', 1); + * // => true + */ + function startsWith(string, target, position) { + string = toString(string); + position = position == null + ? 0 + : baseClamp(toInteger(position), 0, string.length); - while (++index < length) { - if (predicate(array[index], index, array)) { - return true; - } + target = baseToString(target); + return string.slice(position, position + target.length) == target; } - return false; - } - - /** - * Gets the size of an ASCII `string`. - * - * @private - * @param {string} string The string inspect. - * @returns {number} Returns the string size. - */ - var asciiSize = baseProperty('length'); - - /** - * Converts an ASCII `string` to an array. - * - * @private - * @param {string} string The string to convert. - * @returns {Array} Returns the converted array. - */ - function asciiToArray(string) { - return string.split(''); - } - /** - * Splits an ASCII `string` into an array of its words. - * - * @private - * @param {string} The string to inspect. - * @returns {Array} Returns the words of `string`. - */ - function asciiWords(string) { - return string.match(reAsciiWord) || []; - } + /** + * Creates a compiled template function that can interpolate data properties + * in "interpolate" delimiters, HTML-escape interpolated data properties in + * "escape" delimiters, and execute JavaScript in "evaluate" delimiters. Data + * properties may be accessed as free variables in the template. If a setting + * object is given, it takes precedence over `_.templateSettings` values. + * + * **Note:** In the development build `_.template` utilizes + * [sourceURLs](http://www.html5rocks.com/en/tutorials/developertools/sourcemaps/#toc-sourceurl) + * for easier debugging. + * + * For more information on precompiling templates see + * [lodash's custom builds documentation](https://lodash.com/custom-builds). + * + * For more information on Chrome extension sandboxes see + * [Chrome's extensions documentation](https://developer.chrome.com/extensions/sandboxingEval). + * + * @static + * @since 0.1.0 + * @memberOf _ + * @category String + * @param {string} [string=''] The template string. + * @param {Object} [options={}] The options object. + * @param {RegExp} [options.escape=_.templateSettings.escape] + * The HTML "escape" delimiter. + * @param {RegExp} [options.evaluate=_.templateSettings.evaluate] + * The "evaluate" delimiter. + * @param {Object} [options.imports=_.templateSettings.imports] + * An object to import into the template as free variables. + * @param {RegExp} [options.interpolate=_.templateSettings.interpolate] + * The "interpolate" delimiter. + * @param {string} [options.sourceURL='lodash.templateSources[n]'] + * The sourceURL of the compiled template. + * @param {string} [options.variable='obj'] + * The data object variable name. + * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`. + * @returns {Function} Returns the compiled template function. + * @example + * + * // Use the "interpolate" delimiter to create a compiled template. + * var compiled = _.template('hello <%= user %>!'); + * compiled({ 'user': 'fred' }); + * // => 'hello fred!' + * + * // Use the HTML "escape" delimiter to escape data property values. + * var compiled = _.template('<%- value %>'); + * compiled({ 'value': '