openssl_encrypt() causes Internal Server Error

[danalario]

I've got a PHP script that calls openssl_encrypt() and when I execute the script I get "Internal Server ErrorThe server encountered an internal error or misconfiguration and was unable to complete your request."PHP Version is 5.3.5. This is on a server hosted by Site5 hosting.Here's the code:

$cryptkey = "foo";$initvect = "fooooooooooooooo";$method = "aes-256-cbc";$ccnocrypt = $_POST["cccno"];$encrypted = openssl_encrypt($ccnocrypt,$method,$cryptkey,$raw_output=false,$initvect);

I've confirmed that my Cipher Method is listed in openssl_get_cipher_methods() on my server.I've tried leaving out the Initialization Vector and the Raw_output parameters but it throws a warning and then just stops.