/includes/PHP/Compat/Function/mhash.php

<?php

// +----------------------------------------------------------------------+

// | PHP Version 4                                                        |

// +----------------------------------------------------------------------+

// | Copyright (c) 1997-2004 The PHP Group                                |

// +----------------------------------------------------------------------+

// | This source file is subject to version 3.0 of the PHP license,       |

// | that is bundled with this package in the file LICENSE, and is        |

// | available at through the world-wide-web at                           |

// | http://www.php.net/license/3_0.txt.                                  |

// | If you did not receive a copy of the PHP license and are unable to   |

// | obtain it through the world-wide-web, please send a note to          |

// | license@php.net so we can mail you a copy immediately.               |

// +----------------------------------------------------------------------+

// | Authors: Aidan Lister <aidan@php.net>                                |

// +----------------------------------------------------------------------+

//

// $Id: mhash.php,v 1.3 2008/09/28 16:11:31 akid Exp $





if (!defined('MHASH_CRC32')) {

    define('MHASH_CRC32', 0);

}



if (!defined('MHASH_MD5')) {

    define('MHASH_MD5', 1);

}



if (!defined('MHASH_SHA1')) {

    define('MHASH_SHA1', 2);

}



if (!defined('MHASH_HAVAL256')) {

    define('MHASH_HAVAL256', 3);

}



if (!defined('MHASH_RIPEMD160')) {

    define('MHASH_RIPEMD160', 5);

}



if (!defined('MHASH_TIGER')) {

    define('MHASH_TIGER', 7);

}



if (!defined('MHASH_GOST')) {

    define('MHASH_GOST', 8);

}



if (!defined('MHASH_CRC32B')) {

    define('MHASH_CRC32B', 9);

}



if (!defined('MHASH_HAVAL192')) {

    define('MHASH_HAVAL192', 11);

}



if (!defined('MHASH_HAVAL160')) {

    define('MHASH_HAVAL160', 12);

}



if (!defined('MHASH_HAVAL128')) {

    define('MHASH_HAVAL128', 13);

}



if (!defined('MHASH_TIGER128')) {

    define('MHASH_TIGER128', 14);

}



if (!defined('MHASH_TIGER160')) {

    define('MHASH_TIGER160', 15);

}



if (!defined('MHASH_MD4')) {

    define('MHASH_MD4', 16);

}



if (!defined('MHASH_SHA256')) {

    define('MHASH_SHA256', 17);

}



if (!defined('MHASH_ADLER32')) {

    define('MHASH_ADLER32', 18);

}





/**

 * Replace mhash()

 *

 * @category    PHP

 * @package     PHP_Compat

 * @link        http://php.net/function.mhash

 * @author      Aidan Lister <aidan@php.net>

 * @version     $Revision: 1.3 $

 * @since       PHP 4.1.0

 * @require     PHP 4.0.0 (user_error)

 */

if (!function_exists('mhash')) {

    function mhash($hashtype, $data, $key = '')    

    {

        switch ($hashtype) {

            case MHASH_MD5:

                $key = str_pad((strlen($key) > 64 ? pack("H*", md5($key)) : $key), 64, chr(0x00));

                $k_opad = $key ^ (str_pad('', 64, chr(0x5c)));

                $k_ipad = $key ^ (str_pad('', 64, chr(0x36)));

                return pack("H*", md5($k_opad . pack("H*", md5($k_ipad .  $data))));



            default:

                return false;



            break;

        }

    }

}



?>