#!/usr/bin/env python
# -*- coding: utf-8 -*-

#
#  Copyright 2019 The FATE Authors. All Rights Reserved.
#
#  Licensed under the Apache License, Version 2.0 (the "License");
#  you may not use this file except in compliance with the License.
#  You may obtain a copy of the License at
#
#      http://www.apache.org/licenses/LICENSE-2.0
#
#  Unless required by applicable law or agreed to in writing, software
#  distributed under the License is distributed on an "AS IS" BASIS,
#  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
#  See the License for the specific language governing permissions and
#  limitations under the License.
#
class SymmetricKey(object):
    """
    Symmetric encryption key
    """

    def __init__(self):
        pass

    def encrypt(self, plaintext):
        """
        Encryption method
        :param plaintext:
        :return:
        """
        pass

    def decrypt(self, ciphertext):
        """
        Decryption method
        :param ciphertext:
        :return:
        """
        pass


class SymmetricCiphertext(object):
    def __init__(self):
        pass