aes_gcm_native.py 文件源码

def aes_decrypt(key, iv, payload):
    """ Use AES128 GCM with the given key and iv to decrypt the payload. """
    data = payload[:-16]
    tag = payload[-16:]
    backend = default_backend()
    decryptor = Cipher(
        algorithms.AES(key),
        GCM(iv, tag=tag),
        backend=backend).decryptor()
    return decryptor.update(data) + decryptor.finalize()