library/Zend/InfoCard/Cipher.php

   1 <?php
   2 /**
   3  * Zend Framework
   4  *
   5  * LICENSE
   6  *
   7  * This source file is subject to the new BSD license that is bundled
   8  * with this package in the file LICENSE.txt.
   9  * It is also available through the world-wide-web at this URL:
  10  * http://framework.zend.com/license/new-bsd
  11  * If you did not receive a copy of the license and are unable to
  12  * obtain it through the world-wide-web, please send an email
  13  * to license@zend.com so we can send you a copy immediately.
  14  *
  15  * @category   Zend
  16  * @package    Zend_InfoCard
  17  * @subpackage Zend_InfoCard_Cipher
  18  * @copyright  Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)
  19  * @license    http://framework.zend.com/license/new-bsd     New BSD License
  20  * @version    $Id$
  21  */
  22
  23 /**
  24  * Provides an abstraction for encryption ciphers used in an Information Card
  25  * implementation
  26  *
  27  * @category   Zend
  28  * @package    Zend_InfoCard
  29  * @subpackage Zend_InfoCard_Cipher
  30  * @copyright  Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)
  31  * @license    http://framework.zend.com/license/new-bsd     New BSD License
  32  */
  33 class Zend_InfoCard_Cipher
  34 {
  35     /**
  36      * AES 256 Encryption with CBC
  37      */
  38     const ENC_AES256CBC      = 'http://www.w3.org/2001/04/xmlenc#aes256-cbc';
  39
  40     /**
  41      * AES 128 Encryption with CBC
  42      */
  43     const ENC_AES128CBC      = 'http://www.w3.org/2001/04/xmlenc#aes128-cbc';
  44
  45     /**
  46      * RSA Public Key Encryption with OAEP Padding
  47      */
  48     const ENC_RSA_OAEP_MGF1P = 'http://www.w3.org/2001/04/xmlenc#rsa-oaep-mgf1p';
  49
  50     /**
  51      * RSA Public Key Encryption with no padding
  52      */
  53     const ENC_RSA            = 'http://www.w3.org/2001/04/xmlenc#rsa-1_5';
  54
  55     /**
  56      * Constructor (disabled)
  57      *
  58      * @return void
  59      * @codeCoverageIgnoreStart
  60      */
  61     protected function __construct()
  62     {
  63     }
  64     // @codeCoverageIgnoreEnd
  65     /**
  66      * Returns an instance of a cipher object supported based on the URI provided
  67      *
  68      * @throws Zend_InfoCard_Cipher_Exception
  69      * @param string $uri The URI of the encryption method wantde
  70      * @return mixed an Instance of Zend_InfoCard_Cipher_Symmetric_Interface or Zend_InfoCard_Cipher_Pki_Interface
  71      *               depending on URI
  72      */
  73     static public function getInstanceByURI($uri)
  74     {
  75         switch($uri) {
  76             case self::ENC_AES256CBC:
  77                 include_once 'Zend/InfoCard/Cipher/Symmetric/Adapter/Aes256cbc.php';
  78                 return new Zend_InfoCard_Cipher_Symmetric_Adapter_Aes256cbc();
  79
  80             case self::ENC_AES128CBC:
  81                 include_once 'Zend/InfoCard/Cipher/Symmetric/Adapter/Aes128cbc.php';
  82                 return new Zend_InfoCard_Cipher_Symmetric_Adapter_Aes128cbc();
  83
  84             case self::ENC_RSA_OAEP_MGF1P:
  85                 include_once 'Zend/InfoCard/Cipher/Pki/Adapter/Rsa.php';
  86                 return new Zend_InfoCard_Cipher_Pki_Adapter_Rsa(Zend_InfoCard_Cipher_Pki_Adapter_Rsa::OAEP_PADDING);
  87                 break;
  88
  89             case self::ENC_RSA:
  90                 include_once 'Zend/InfoCard/Cipher/Pki/Adapter/Rsa.php';
  91                 return new Zend_InfoCard_Cipher_Pki_Adapter_Rsa(Zend_InfoCard_Cipher_Pki_Adapter_Rsa::NO_PADDING);
  92                 break;
  93
  94             default:
  95                 require_once 'Zend/InfoCard/Cipher/Exception.php';
  96                 throw new Zend_InfoCard_Cipher_Exception("Unknown Cipher URI");
  97         }
  98     }
  99 }