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: Cipher.php 20096 2010-01-06 02:05:09Z bkarwin $

    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 }