Pdftron encrypt - lambda function

Prerequisites

• Node 12.x
• NPM 7.4.x
• Serverless CLI Serverless Framework

Config file

Edit serverless.yml and set your configs. Pdftron License Key, Bucket, encrypt key and trigger to call function.

Configs

Config Details

provider:
  name: aws
  runtime: nodejs12.x
  region: sa-east-1
  memorySize: 256
  iamRoleStatements:
    - Effect: Allow
      Action:
        - s3:* #Permission for your user (* is allow all actions)
      Resource:
        - "arn:aws:s3:::your-bucket-name/*" #Your bucket ARAN (check in aws website)
  lambdaHashingVersion: 20201221
  
functions:
  encrypt:
    handler: encrypt.handle
    environment:
      bucket: your-bucket-name
      hash: "%252s%¨3-" #Your Password to add in files
      pdftronkey: "demo:1630507513016:78fce14403000000007b2248cb7b18a79ea8aea117e5f1c5e5b33d2214" #Your PDFTron Key
   events:
      - s3:
          bucket: your-bucket-name
          event: s3:ObjectCreated:* #Trigger is a ObjectCreated action
          rules:
            - prefix: uploads/ #Required prefix/folder
            - suffix: .pdf #Required sufix/format
          existing: true #If your bucket already exist

How it works

• User upload PDF file in LMS bucket (defined in the serverless.yml file)
• Function get this file and encrypt with Key defined
• Save new file in encrypted folder inside the bucket

Working Flow