aes.py 文件源码

def cbc_decrypt(self, data):
        """cbc_decrypt."""
        if not isinstance(data, bytes):
            data = data.encode()

        cipher = Cipher(algorithms.AES(self.cbc_key),
                        modes.CBC(self.cbc_iv),
                        backend=default_backend())
        decryptor = cipher.decryptor()

        uppaded_data = self.pkcs7_unpadding(decryptor.update(data))

        uppaded_data = uppaded_data.decode()
        return uppaded_data