<?php $ivs = mcrypt_get_iv_size(MCRYPT_DES, MCRYPT_MODE_CBC); $iv = mcrypt_create_iv($ivs, MCRYPT_RAND); $key = "F925T"; $message = "This is a test."; $enc = mcrypt_encrypt(MCRYPT_DES, $key, $message, MCRYPT_MODE_CBC, $iv); echo bin2hex($enc); ?>