/*
 * Copyright (C)2009 - SSHJ Contributors
 *
 * 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 net.schmizz.sshj.transport.mac;

/** Message Authentication Code for use in SSH. It usually wraps a javax.crypto.Mac class. */
public interface MAC {

    byte[] doFinal();

    byte[] doFinal(byte[] input);

    void doFinal(byte[] buf, int offset);

    int getBlockSize();

    void init(byte[] key);

    void update(byte[] foo);

    void update(byte[] foo, int start, int len);

    void update(long foo);
}
