一段低调奢华有内涵的加密、解密类

时间:2014-07-22 14:48来源: 作者: 点击: 次

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<无详细内容>

require_once("AzDGCrypt.class.inc.php");
 
$keys = "1234567890abcdefghjklmn1234567890@#$%^&*()!"; // you must entered your key
$cr64 = new AzDGCrypt($keys);
$e = $cr64->crypt($keys);
echo "Crypted information = ".$e."<br>";
$d = $cr64->decrypt($e);
echo "Decrypted information = ".$d."<br>";
//from:http://www.codepearl.com

2. [代码]类跳至 [1] [2] [全屏预览]

                 <?php
//from:http://www.codepearl.com
 
class AzDGCrypt{
   var $k;
   function AzDGCrypt($m){
      $this->k = $m;
   }
   function ed($t) { 
      $r = md5($this->k); 
      $c=0; 
      $v = ""; 
      for ($i=0;$i<strlen($t);$i++) { 
         if ($c==strlen($r)) $c=0; 
         $v.= substr($t,$i,1) ^ substr($r,$c,1); 
         $c++; 
      } 
      return $v; 
   } 
   function crypt($t){ 
      srand((double)microtime()*1000000); 
      $r = md5(rand(0,32000)); 
      $c=0; 
      $v = ""; 
      for ($i=0;$i<strlen($t);$i++){ 
         if ($c==strlen($r)) $c=0; 
         $v.= substr($r,$c,1) . 
             (substr($t,$i,1) ^ substr($r,$c,1)); 
         $c++; 
      } 
      return base64_encode($this->ed($v)); 
   } 
   function decrypt($t) { 
      $t = $this->ed(base64_decode($t)); 
      $v = ""; 
      for ($i=0;$i<strlen($t);$i++){ 
         $md5 = substr($t,$i,1); 
         $i++; 
         $v.= (substr($t,$i,1) ^ $md5); 
      } 
      return $v; 
   } 
}
?>