How can I do this same encrypt/decrypt PHP function on iOS with Objective-C?

Question

I have a function in PHP that encrypts and decrypts strings:

function encrypt_decrypt($action, $string) 
{
   $output = false;
   $key = \'mykeyhereblah\';
   $i         


        

Answer 1

I use http://searchcode.com/codesearch/view/14846108 for MD5 encryption... and prove me wrong but it suppose MD5 is just one way encryption, it can't be decrypted just like that. It can be decrypted with brute force or with a large database of encrypted strings. That's why it's suppose to be safe.