title: md5 Decryption in PHP
body: <p>I am developing a system for Online Hotel booking system which I did not start from scratch. The information of customers(bookers) in the system are encrypted using MD5 but unlike normal md5() php function the system is quite complicated as you can see here : </p>
  
  <pre><code>$psw = md5("vhdsxnjuobef");
  $t_cred_num = md5_encrypt($t_cred_num, $psw, 16);
  </code></pre>
  
  <p>and for Decryption it goes like :</p>
  
  <pre><code>$psw = md5("vhdsxnjuobef");
  $t_credit_num = md5_decrypt($t_cred_num, $psw, 16);
  </code></pre>
  
  <p>this code is not Working though on my Server and there is alot of Customer's information Encrypted.</p>
  
  <p>Example of hash of t_cred_num variable =></p>
  
  <pre><code> fdRucZHctr7vIX+U400xGHq53Qemze0YQH1sAUjvmaC1P+XaRadI9CaX0wrkDXu6
  </code></pre>
  
  <p>Any Ideas on how to Decrypt these hashes ? When I use md5_decrypt with the hashes nothing happens.</p>