bcryptify 1.0.0

Bcryptify is a modern and elegant Python library designed to simplify the use of cryptographic algorithms, while adhering to SOLID principles to ensure clean, extensible, and maintainable code.

Bcryptify

Bcryptify est une bibliothèque Python moderne et élégante conçue pour simplifier l'utilisation des algorithmes de chiffrement, tout en respectant les principes SOLID pour garantir un code propre, extensible et maintenable.

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📦 Installation

You can install Bcryptify directly from PyPI with pip:

pip install bcryptify

🚀 Use

Here is a simple example of using the AesGcmCipher class to encrypt and decrypt messages or files.

import os
from Bcryptify.aes_gcm import AesGcmCipher

# 256-bit AES key (must be kept secret)
key = b'\xcd_\x8d\xfd1E\xd4\xe3uj\xee_\x1dj\x9c\x07\xa3\x13\x95\x96\x10\xa6\xf3\rb\xc0\x08\xde\xfa\xb6\x99\xc9'

# Initializing the AES-GCM cipher
aes_gcm = AesGcmCipher(key)


# --- Example of file encryption/decryption ---

def read_file(filename: str) -> bytes:
    with open(filename, "rb") as f:
        return f.read()

def write_file(filename: str, data: bytes) -> None:
    with open(filename, "wb") as f:
        f.write(data)

def encrypt_file(filepath: str) -> None:
    if not os.path.isfile(filepath):
        raise FileNotFoundError(f"The file {filepath} does not exist.")
    data = read_file(filepath)
    encrypted = aes_gcm.encrypt(data)
    encrypted_filepath = filepath + ".lock"
    write_file(encrypted_filepath, encrypted)
    os.remove(filepath) 
    print(f"File encrypted in {encrypted_filepath} and original file deleted.")

def decrypt_file(encrypted_filepath: str) -> None:
    if not encrypted_filepath.endswith(".lock"):
        raise ValueError("The decrypted file must have the extension '.lock'.")
    if not os.path.isfile(encrypted_filepath):
        raise FileNotFoundError(f"The file {encrypted_filepath} does not exist.")
    data = read_file(encrypted_filepath)
    decrypted = aes_gcm.decrypt(data)
    original_filepath = encrypted_filepath[:-5] 
    write_file(original_filepath, decrypted)
    os.remove(encrypted_filepath)
    print(f"Decrypted file in {original_filepath} and encrypted file deleted.")

# Example of use
file_path = "chap 12.pdf"

encrypt_file(file_path)
decrypt_file(file_path + ".lock")


# ----------------------------------------


# Encrypting a text message
#message = "Hello, this is a secret message.".encode('utf-8')
#encrypted_message = aes_gcm.encrypt(message)
#print(f"Encrypted message : {encrypted_message}")

# Decrypting the message
#decrypted_message = aes_gcm.decrypt(encrypted_message)
#print(f"Deciphered message : {decrypted_message.decode('utf-8')}")