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 <?php
 /**
  * Zend Framework
  *
  * LICENSE
  *
  * This source file is subject to the new BSD license that is bundled
  * with this package in the file LICENSE.txt.
  * It is also available through the world-wide-web at this URL:
  * http://framework.zend.com/license/new-bsd
  * If you did not receive a copy of the license and are unable to
  * obtain it through the world-wide-web, please send an email
  * to license@zend.com so we can send you a copy immediately.
  *
  * @category   Zend
  * @package    Zend_Oauth
  * @copyright  Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
  * @license    http://framework.zend.com/license/new-bsd     New BSD License
  * @version    $Id$
  */
 
 /** Zend_Oauth_Signature_SignatureAbstract */
 // require_once 'Zend/Oauth/Signature/SignatureAbstract.php';
 
 /** Zend_Crypt_Rsa */
 // require_once 'Zend/Crypt/Rsa.php';
 
 /**
  * @category   Zend
  * @package    Zend_Oauth
  * @copyright  Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
  * @license    http://framework.zend.com/license/new-bsd     New BSD License
  */
 class Zend_Oauth_Signature_Rsa extends Zend_Oauth_Signature_SignatureAbstract
 {
     /**
      * Sign a request
      *
      * @param  array $params
      * @param  null|string $method
      * @param  null|string $url
      * @return string
      */
     public function sign(array $params, $method = null, $url = null)
     {
         $rsa = new Zend_Crypt_Rsa;
         $rsa->setHashAlgorithm($this->_hashAlgorithm);
         $sign = $rsa->sign(
             $this->_getBaseSignatureString($params, $method, $url),
             $this->_key,
             Zend_Crypt_Rsa::BASE64
         );
         return $sign;
     }
 
     /**
      * Assemble encryption key
      *
      * @return string
      */
     protected function _assembleKey()
     {
         return $this->_consumerSecret;
     }
 }