USKYOF/api_sdk/aliyun-php-sdk-core/Auth/ShaHmac256Signer.php

<?php
/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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 ShaHmac256Signer implements ISigner
{
	public function signString($source, $accessSecret)
	{
		return	base64_encode(hash_hmac('sha256', $source, $accessSecret, true));
	}
	
	public function  getSignatureMethod() {
		return "HMAC-SHA256";
	}

	public function getSignatureVersion() {
		return "1.0";
	}

}