One time pad server code sample

otp.php

<?
// One Time Pad from string demo.
// http://euri.ca/2012/11/encryption-that-calls-home-skyfall-movie-magic/ 
// Don't use this in production, obviously since you can brute force the seed.  
// (Actually coming up with a server that generates OTPs in response to a seed is a decent problem)
$seed = "LOCALSECRET" + $_SERVER["QUERY_STRING"];
$hash = hash('sha256', $seed);
$dec = hexdec($hash);
mt_srand($dec);

for($i=0; $i<1000; $i++) {
	echo dechex(mt_rand());
}
?>