<?php
/**
 * Copyright 2015 OpenStack Foundation
 * 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.
 **/

namespace jwa\cryptographic_algorithms\macs;

use jwa\cryptographic_algorithms\exceptions\InvalidKeyLengthAlgorithmException;
use jwa\cryptographic_algorithms\IntegrityCheckingAlgorithm;
use security\SharedKey;

/**
 * Interface MAC_Algorithm
 * @package jwa\cryptographic_algorithms\macs
 */
interface MAC_Algorithm extends IntegrityCheckingAlgorithm {
    /**
     * @param SharedKey $key
     * @param string $message
     * @return string
     * @throws InvalidKeyLengthAlgorithmException
     */
    public function digest(SharedKey $key, $message);
}