CryptLib/Cipher/Block/Cipher/AES.php

   1 <?php
   2 /**
   3  * An implementation of the AES cipher, using the phpseclib implementation
   4  *
   5  * This was forked from phpseclib and modified to use CryptLib conventions
   6  *
   7  * PHP version 5.3
   8  *
   9  * @category   PHPCryptLib
  10  * @package    Cipher
  11  * @subpackage Block
  12  * @author     Anthony Ferrara <ircmaxell@ircmaxell.com>
  13  * @author     Jim Wigginton <terrafrost@php.net>
  14  * @copyright  2011 The Authors
  15  * @license    http://www.opensource.org/licenses/mit-license.html  MIT License
  16  * @version    Build @@version@@
  17  */
  18
  19 namespace CryptLib\Cipher\Block\Cipher;
  20
  21 /**
  22  * An implementation of the AES cipher, using the phpseclib implementation
  23  *
  24  * @category   PHPCryptLib
  25  * @package    Cipher
  26  * @subpackage Block
  27  * @author     Anthony Ferrara <ircmaxell@ircmaxell.com>
  28  */
  29 class AES extends Rijndael {
  30
  31     /**
  32      * Get a list of supported ciphers for this class implementation
  33      *
  34      * @return array A list of supported ciphers
  35      */
  36     public static function getSupportedCiphers() {
  37         return array(
  38             'aes-128',
  39             'aes-192',
  40             'aes-256',
  41         );
  42     }
  43
  44     /**
  45      * Construct the instance for the supplied cipher name
  46      *
  47      * @param string $cipher The cipher to implement
  48      *
  49      * @return void
  50      * @throws InvalidArgumentException if the cipher is not supported
  51      */
  52     public function __construct($cipher) {
  53         parent::__construct($cipher);
  54         list (, $bits) = explode('-', $cipher, 2);
  55         $this->setBlockSize(128);
  56         $this->setKeySize($bits);
  57     }
  58
  59 }