obfuscation.py 文件源码

def __init__(self, key=None, blocklen=16):
        from cryptography.hazmat.primitives.ciphers import Cipher, algorithms, modes
        from cryptography.hazmat.backends import default_backend
        key = key or urandom(blocklen)
        iv = b' ' * blocklen
        self.blocklen = blocklen
        self.cipher = Cipher(algorithms.AES(key), modes.CTR(iv), backend=default_backend())