hi, i want to know how can i ENCRYPT and DECRYPT a string, using php functions. i am using PHP ver 5.0, I want to encrypt the string which i will be passing between the web pages, below i have writien small code of that, which i want to achive. ---------------------------------- file1.php <?php $str ="xyz"; $var = (encrypt the string $str and assign to $var) print "<a href='file2.php?enc=".$var." '> click here</a>"; ?> file2.php <?php $tmp = $_GET['enc']; $var = (decrypt $tmp and assign to $var) print "the string is $var"; ?> ---------------------------------- i know i can use Mcrypt Encryption Functions but i am not able to use this since i have to host web pages on the hosting server and my hosting server does not allow to install these functions so i have to find an alernate metod to do this. thanks in advance. nesargha