Add flake.nix and include #12

.envrc

@@ -0,0 +1 @@
+use flake

.gitignore

@@ -5,3 +5,5 @@ pkg2zip.exe
 *.obj
 *.pdb
 *.zip
+.direnv
+result

flake.nix

@@ -0,0 +1,75 @@
+{
+  description = "A Nix-flake-based C/C++ development environment";
+
+  inputs = {
+    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
+  };
+
+  outputs =
+    { self, nixpkgs }:
+    let
+      supportedSystems = [ "x86_64-linux" ];
+      forEachSupportedSystem =
+        f:
+        nixpkgs.lib.genAttrs supportedSystems (
+          system:
+          f {
+            pkgs = import nixpkgs { inherit system; };
+          }
+        );
+    in
+    {
+      devShells = forEachSupportedSystem (
+        { pkgs }:
+        {
+          default =
+            pkgs.mkShell.override
+              {
+                stdenv = pkgs.gccStdenv;
+              }
+              {
+                packages = with pkgs; [
+                  python3
+                  gcc
+                  clang-tools
+                  gdb
+                  typos
+                  pkg-config
+                ];
+
+              };
+        }
+      );
+
+      packages = forEachSupportedSystem (
+        { pkgs }:
+        {
+          default = pkgs.stdenv.mkDerivation {
+            pname = "pkg2zip";
+            version = "0.1";
+
+            src = ./.;
+
+            # nativeBuildInputs = [ pkgs.makeWrapper ]; # If you need wrappers
+            buildInputs = [ ]; # Add dependencies like pkgs.openssl if needed
+
+            buildPhase = ''
+              printenv
+              make
+            '';
+
+            installPhase = ''
+              mkdir -p $out/bin
+              cp ./pkg2zip $out/bin/
+            '';
+
+            meta = {
+              description = "Decrypts PlayStation Vita pkg file and packages to zip archive";
+              license = pkgs.lib.licenses.unlicense;
+              platforms = pkgs.lib.platforms.linux;
+            };
+          };
+        }
+      );
+    };
+}

pkg2zip.c

@@ -256,7 +256,7 @@ static void find_psp_sfo(const aes128_key* key, const aes128_key* ps3_key, const
 
 static void find_pbp_sfo(const aes128_key* key, const aes128_key* ps3_key, const uint8_t* iv, sys_file pkg, uint64_t pkg_size, uint64_t enc_offset, uint64_t items_offset, uint32_t item_count, char* discid)
 {
-    memset(discid, 0x00, 0x10);
+    memset(discid, 0x00, 0x0A);
     for (uint32_t item_index = 0; item_index < item_count; item_index++)
     {
         uint8_t item[32];