/*
 * Copyright 2021 Tianmian Tech. 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.
 */

package com.welab.wefe.mpc.pir.protocol.nt.group;

import java.math.BigInteger;

/**
 * @Author eval
 * @Date 2020-11-17
 **/
public interface GroupArithmetic {

    GroupElement add(GroupElement a, GroupElement b);

    GroupElement neg(GroupElement a);

    GroupElement sub(GroupElement a, GroupElement b);

    GroupElement mul(BigInteger scalar, GroupElement a);

    boolean isInGroup(GroupElement element);

    byte[] encode(GroupElement element);

    GroupElement decode(byte[] bytes);

    BigInteger getFieldOrder();

    GroupElement getIdentity();

    GroupElement getGenerator();
}
