OmnomIRC-node/checkLogin.php

<?PHP
$encriptKeyToUse = "key from Config.php (created while installation)";
function base64_url_encode($input) {
	return strtr(base64_encode($input), '+/=', '-_,');
}

function base64_url_decode($input) {
	return base64_decode(strtr($input, '-_,', '+/=')); 
}
$ssi_guest_access = true;
@require(dirname(__FILE__) . '/SSI.php');


ob_start();
if(isset($_GET['txt']))
	header('Content-type: text/plain');
elseif (!isset($_GET['textmode']))
	header('Content-type: text/javascript');
if ($user_info['is_guest'] || is_not_banned()) {
	$nick = "Guest";
	$signature = "";
} else {
	$nick = $user_info['name'];
	$signature = base64_url_encode(mcrypt_encrypt ( MCRYPT_RIJNDAEL_256 , $encriptKeyToUse , $nick , MCRYPT_MODE_ECB));
}


ob_end_clean();

if(isset($_GET['txt']))
	echo $signature."\n".$nick;
elseif (isset($_GET['textmode']))
	header('Location: http://omnomirc.www.omnimaga.org/textmode.php?login&nick='.urlencode($nick).'&sig='.urlencode($signature));
else
	echo "signCallback('$signature','$nick');";

?>