K9Crypt

K9Crypt is a powerful Python library that provides multi-layer encryption. It securely protects your data using five different AES-256-based encryption modes.

Features

• 5-layer AES-256 encryption (GCM, CBC, CFB, OFB, CTR)
• Strong key derivation with PBKDF2
• HMAC-SHA512 verification at each layer
• Brotli compression support
• Asynchronous (async/await) API
• Protection against timing attacks

Installation

pip install k9crypt

Usage Example

from k9crypt import K9Crypt
import asyncio

async def test():
    secret_key = "VeryLongSecretKey!@#1234567890"
    encryptor = K9Crypt(secret_key)
    plaintext = "Hello, World!"

    try:
        encrypted = await encryptor.encrypt(plaintext)
        print("Encrypted data:", encrypted)

        decrypted = await encryptor.decrypt(encrypted)
        print("Decrypted data:", decrypted)
    except Exception as error:
        print("Encryption error:", str(error))

asyncio.run(test())

Security Features

1. Multi-Layer Encryption: Each layer uses a different AES-256 mode
2. HMAC Verification: Integrity check at each layer
3. Strong Key Derivation: 600,000 iterations with PBKDF2
4. Secure Comparison: Protection against timing attacks
5. Salt and Pepper: Unique salt used for each encryption

Requirements

• Python 3.7+
• cryptography>=41.0.7
• brotli>=1.1.0

License

MIT License

Contribution

1. Fork this repository
2. Create a new branch (git checkout -b feature/new-feature)
3. Commit your changes (git commit -am 'Added new feature')
4. Push your branch (git push origin feature/new-feature)
5. Create a Pull Request