🔐 PyEncripto

PyEncripto is a tool for encrypting Python source code and resources (assets) with secure runtime decryption. It is designed to protect intellectual property and create encrypted Python packages.

🚀 Features

• 🔒 Encrypt .py files into .crpt using AES (CFB mode)
• 📦 Package and encrypt resources (from assets/ folder) into assets.pak
• 🧹 Runtime loading of encrypted modules
• 🖼 Runtime loading and decryption of encrypted assets (images, sounds, etc.)
• 🔑 Support for encryption keys
• 🧪 Run encrypted projects with preserved main.main() interface

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📦 Installation

pip install pyencripto

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💠 Usage

1. Encrypt a project

pyencripto encrypt <source_folder> <output_folder> --key <key>

Example:

pyencripto encrypt ./my_project ./my_project_crpt --key secret123

What happens:

• All .py files are encrypted and saved with .crpt extension
• The assets/ folder is encrypted and packed into assets.pak

⚠️ The .crpt extension is mandatory! It is used by the module loader.

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2. Run an encrypted project

pyencripto run <encrypted_project_folder> <key>

Example:

pyencripto run ./my_project_crpt secret123

The project must contain an encrypted main.crpt file with a main() function.

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📁 Project structure

Original project:

my_project/
├── main.py          # contains main()
├── utils/
│   └── helper.py
└── assets/
    └── image.png

After encryption:

my_project_crpt/
├── main.crpt
├── utils/
│   └── helper.crpt
└── assets.pak

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🔧 Internal modules

• encryptor.py — handles project encryption
• secure_runtime.py — loads .crpt modules and decrypts assets at runtime
• cli.py — CLI interface (pyencripto encrypt|run)

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🧪 Requirements

• Python 3.10+
• pycryptodome (automatically installed)

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⚠️ Security notes

• Encryption makes reverse engineering harder but not impossible. Do not treat this as absolute protection.
• The key is stored only in memory but can be extracted during runtime.

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