Supports Chinese php encryption and decryption code

Php code class:
Copy codeThe Code is as follows:
<? Php
/**
* 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 <string, boolean>
*/
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 <string, boolean>
*/
Public final static function Decrypt ($ txt, $ key ){
$ Txt = self: keyED (base64_decode (substr ($ txt, 32,-32), $ key );
$ Tmp = "";
For ($ I = 0; $ I <strlen ($ txt); $ I ++ ){
$ Md5 = substr ($ txt, $ I, 1 );
$ I ++;
$ Tmp. = (substr ($ txt, $ I, 1) ^ $ md5 );
}
Return self: chkToken ()? $ Tmp: null;
}
/**
* Enter description here...
* @ Var unknown_type
*/
Private static $ _ key = 'lau ';
}
?>

Usage:
Copy codeThe Code is as follows:
<? Php // Code Start
/**
* Copyright (c) 2011 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, "<br/> ";
Echo "DeCode:". MD5Crypt: Decrypt ($ a, 100 );
?>