Online PHP editor | output for fAt72

<?php $key = hex2bin('000102030405060708090a0b0c0d0e0f'); $message = hex2bin('5061726101676f6e000300'); $iv = mcrypt_create_iv(16, MCRYPT_DEV_URANDOM); $encrypted = mcrypt_encrypt(MCRYPT_RIJNDAEL_128, $key, $message, MCRYPT_MODE_CBC, $iv); $decrypted = mcrypt_decrypt(MCRYPT_RIJNDAEL_128, $key, $encrypted, MCRYPT_MODE_CBC, $iv); // This should still be padded: var_dump(bin2hex($decrypted)); // Let's strip off the padding: $stripped = rtrim($decrypted, "\0"); var_dump(bin2hex($stripped)); // Does this equal the original message? var_dump($stripped === $message);