if (empty($xoopsUser)) {
include_once(XOOPS_ROOT_PATH."/class/rc4.crypt.php");
$checksum = "verified";
$pass = strtoupper(makepass());
$rc4 = new rc4_crypt();
$rc4->key($pass);
$rc4->crypt($checksum);
$im = imagecreatefrompng('images/verify.png');
$text_color = imagecolorallocate($im, 50, 50, 50);
imagestring($im, 5, 2, 2, $pass, $text_color);
imagepng($im, "cache/verify.png");
imagedestroy($im);
if (@file_exists("cache/verify.png")) {
echo "<input type='hidden' id='verify_crc' name='verify_crc' value='".base64_encode($checksum)."'>";
echo "<tr><td><span class='remark'>Letras para verificación ^<b>1</b></span>:</td><td><img src='cache/verify.png?".time()."'></td></tr>
<tr><td>&amp;nbsp;</td><td><input type='text' id='verify_text' name='verify_text' value=''></td></tr>";
}
} else {
echo "<input type='hidden' id='verify_crc' name='verify_crc' value=''>";
echo "<input type='hidden' id='verify_text' name='verify_text' value=''>";
}

$verify_text = $HTTP_POST_VARS["verify_text"];
$verify_crc = $HTTP_POST_VARS["verify_crc"];
include_once(XOOPS_ROOT_PATH."/class/rc4.crypt.php");
$rc4 = new rc4_crypt();
$rc4->key(strtoupper($verify_text));
$verify_crc = base64_decode($verify_crc);
$rc4->decrypt($verify_crc);

if ( empty($verify_text) || $verify_crc != "verified" ) {
$messagesent .= "HIER DEN TEXT EINGEBEN DER ZU SEHEN SEIN SOLL WENN DER GAST DEN CODE NICHT BZW. NICHT RICHTIG EINGEGEBEN HAT!<br />";
redirect_header("index.php",5,$messagesent);
exit;
}