pushbullet.py 文件源码

def _encrypt_data(self, data):
        assert self._encryption_key

        from cryptography.hazmat.primitives.ciphers import Cipher, algorithms, modes
        from cryptography.hazmat.backends import default_backend

        iv = os.urandom(12)
        encryptor = Cipher(
            algorithms.AES(self._encryption_key),
            modes.GCM(iv),
            backend=default_backend()
        ).encryptor()

        ciphertext = encryptor.update(json.dumps(data).encode("UTF-8")) + encryptor.finalize()
        ciphertext = b"1" + encryptor.tag + iv + ciphertext
        return standard_b64encode(ciphertext).decode("ASCII")