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php代码类:  。

复制代码代码如下

<?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';  }  ?>  。

使用方法：  。

复制代码代码如下

<?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 );  ?>  。

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