<?php 
/* 
 * Copyright 2011 Google Inc. 
 * 
 * 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. 
 */ 
 
require_once "Google_P12Signer.php"; 
 
/** 
 * Signs data. 
 * 
 * @author Brian Eaton <[email protected]> 
 */ 
abstract class Google_Signer { 
  /** 
   * Signs data, returns the signature as binary data. 
   */ 
  abstract public function sign($data); 
} 
 
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