#!/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.
#

from pipeline.param.base_param import BaseParam
from pipeline.param import consts


class EncryptParam(BaseParam):
    """
    Define encryption method that used in federated ml.

    Parameters
    ----------
    method : {'Paillier'}
        If method is 'Paillier', Paillier encryption will be used for federated ml.
        To use non-encryption version in HomoLR, set this to None.
        For detail of Paillier encryption, please check out the paper mentioned in README file.

    key_length : int, default: 1024
        Used to specify the length of key in this encryption method.

    """

    def __init__(self, method=consts.PAILLIER, key_length=1024):
        super(EncryptParam, self).__init__()
        self.method = method
        self.key_length = key_length

    def check(self):
        return True