Etiket: Md5

Kullanıcı Tanımlı MD5 Şifreleme

PHP
45 lines
<?php
define("ktMD5_CODE","GuvenliKodBuraya"); //Your eMD5 server-side code
function ktMD5($metin){
    return ktMD5::hash($metin);
}
class ktMD5 {
    static function ikili($metin){
        $cikti=null;
        $i=0;while($i < strlen($metin)){
            $cikti .= "+". str_pad(decbin(ord(substr($metin,$i++,1))), 8, "0", STR_PAD_LEFT);
        }
        return $cikti;
    }
    static function dogrula($metin1,$metin2){ 
        if($metin1 != "+" && $metin2 != "+"){ 
            if($metin1 xor $metin2){
                return "1"; 
            }else{
                return "0"; 
            } 
        }else{
            return "+"; 
        } 
    }
    static function hash($metin){
        if(!defined("ktMD5_CODE")){exit("<b>hata: </b> ktMD5_code tanımlanmadı");}
        $metin = trim($metin);$s = md5(ktMD5_CODE);$metin = md5($metin);
        $i=0;while($i != 32){$dizi_metin[] = substr($metin,$i,8);$i=$i+8;}
        $i=0;while($i != 32){$dizi_s[] = substr($s,$i,8);$i=$i+8;}
        $metin1 = ktMD5::ikili($dizi_s[0].$dizi_metin[1].$dizi_s[2].$dizi_metin[3]);
        $metin2 = ktMD5::ikili($dizi_metin[0].$dizi_s[1].$dizi_metin[2].$dizi_s[3]);
        $kombin=null;
        $e=0;
        while($e < strlen($metin1)){ 
            $kombin .= ktMD5::dogrula(substr($metin1,$e,1),substr($metin2,$e,1)); 
            $e++; 
        }
        $cikti = md5($kombin);
        return $cikti;
    }
}
echo MD5("1234568");
echo "<br>";
echo ktMD5("1234568");
?>
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

Çıktısı

Markdown
2 lines
fe743d8d97aa7dfc6c93ccdc2e749513
e32f8d4f9b769346a74fe8d1a82c5e56
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

 

Şifreleri Şifrelemek ve Çözmek

PHP
48 lines
<?php
class Sifre{
   var $k;
   function Sifre($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 $v; 
   } 
   function sifrele($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($v)); 
   } 
   function coz($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; 
   } 
}
$sifre = "123456";
$cr64 = new Sifre($sifre);
$e = $cr64->sifrele($sifre);
echo "Şifreli = ".$e."<br>";
$d = $cr64->coz($e);
echo "Çözülmüş = ".$d."<br>";
?>
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

Çıktısı

Markdown
2 lines
Şifreli = UzYGZVBkAT8AOFBl
Çözülmüş = 123456
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX