Encryption supports Chinese PHP encryption and decryption class code

PHP Code class:

Copy the Code code as follows:

/**
* Copyright (c) 2011-01 Xatudream
* Xatudream All rights Reserved.
* support:185390516.qzone.qq.com
* qq:185390516
* Author:lau version:1.01
* Date:2010-08-12 09:28:32
*/
! Defined (' WORKSPACE ') && exit ("Access Denied!");
Class Md5crypt {
/**
* Enter description here ...
* @param unknown_type $str
* @return String
*/
Public final static function Mdsha ($STR) {
$code = substr (MD5 ($STR), 10);
$code. = substr (SHA1 ($STR), 0, 28);
$code. = substr (MD5 ($STR), 0, 22);
$code. = substr (SHA1 ($STR), 16). MD5 ($STR);
Return Self::chktoken ()? $code: null;
}
/**
* Enter description here ...
* @param unknown_type $param
*/
Private final static function Chktoken () {
return true;
}
/**
* Enter description here ...
* @param unknown_type $txt
* @param unknown_type $encrypt _key
* @return ambigous
*/
Private final static function KeyED ($txt, $encrypt _key) {
$encrypt _key = MD5 ($encrypt _key);
$ctr = 0;
$tmp = "";
for ($i = 0; $i < strlen ($txt); $i + +) {
if ($ctr = = strlen ($encrypt _key))
$ctr = 0;
$tmp. = substr ($txt, $i, 1) ^ substr ($encrypt _key, $ctr, 1);
$ctr + +;
}
return $tmp;
}
/**
* Enter description here ...
* @param unknown_type $txt
* @param unknown_type $key
* @return String
*/
Public final static function Encrypt ($txt, $key) {
Srand (Double) microtime () * 1000000);
$encrypt _key = MD5 (rand (0, 32000));
$ctr = 0;
$tmp = "";
for ($i = 0; $i < strlen ($txt); $i + +) {
if ($ctr = = strlen ($encrypt _key))
$ctr = 0;
$tmp. = substr ($encrypt _key, $ctr, 1). (Substr ($txt, $i, 1) ^ substr ($encrypt _key, $ctr, 1));
$ctr + +;
}
$_code = MD5 ($encrypt _key). Base64_encode (self::keyed ($tmp, $key)). MD5 ($encrypt _key. $key);
Return Self::chktoken ()? $_code:null;
}
/**
* Enter description here ...
* @param unknown_type $txt
* @param unknown_type $key
* @return ambigous
*/
Public final static function Decrypt ($txt, $key) {
$txt = self::keyed (Base64_decode (substr ($txt, +,-)), $key);
$tmp = "";
for ($i = 0; $i < strlen ($txt); $i + +) {
$MD 5 = substr ($txt, $i, 1);
$i + +;
$tmp. = (substr ($txt, $i, 1) ^ $md 5);
}
Return Self::chktoken ()? $TMP: null;
}
/**
* Enter description here ...
* @var Unknown_type
*/
private static $_key = ' Lau ';
}
?>

How to use:

Copy the Code code as follows:

/**
* Copyright (c) xatudream
* Xatudream All rights Reserved.
* support:185390516.qzone.qq.com
* qq:185390516
* Author:lovecrystal version:1.01
* Date:2011-9-2 04:00:37
*/
Define (' WORKSPACE ', '. '). Directory_separator);
Header ("content-type:text/html; Charset=utf-8 ");
Include_once ' core/library/md5crypt.class.php ';
$a = Md5crypt::encrypt ("A", 100);
echo "EnCode:". $a, "
";
echo "DeCode:". Md5crypt::D ecrypt ($a, 100);
?>

The above describes the encryption support in Chinese PHP encryption and decryption class code, including the content of the encryption, I hope that the PHP tutorial interested in a friend helpful.

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