I am  trying to achieve SSO between apache and IIS. I am trying to set a cookie in IIS that can be read by Apache. The following code creates and sets the cookie. Can anyone help me please to convert this code to vb.net? I would be very much thankful to you.

$ip = explode(".",$REMOTE_ADDR);
$ts = isset($arg["ts"]) ? $arg["ts"] : time();
$ts_arr  = array(($ts & 0xff000000) >> 24,
                 ($ts & 0xff0000) >> 16,
                 ($ts & 0xff00) >> 8,
                 ($ts & 0xff));
$ipts = pack("C8",$ip,$ts_arr);
$digest0 = md5($ipts . $secret . $username . $tokens . $user_data);
$digest = md5($digest0 . $secret);
$tokens .= '!';
$cookie = sprintf("%s%08x%d!%s%s", $digest, $ts_arr, $username, $tokens, $data);
$cookie = base64_encode($cookie);
setcookie($cookiename,$cookie,0,'/');
header("Location: $returnURL");

Regards