/**
* Decrypts the packets received from the client on the first connection
*/
public function firstDecrypt($client, $data)
{
$firstClientKey = self::$clients[(int) UltimaPHP::$conf['server']['client']['major'] . (int) UltimaPHP::$conf['server']['client']['minor'] . (int) UltimaPHP::$conf['server']['client']['revision']][0];
$secondClientKey = self::$clients[(int) UltimaPHP::$conf['server']['client']['major'] . (int) UltimaPHP::$conf['server']['client']['minor'] . (int) UltimaPHP::$conf['server']['client']['revision']][1];
$len = strlen($data);
for ($i = 0; $i < $len; $i++) {
$data[$i] = self::$currentKey0 ^ $data[$i];
$oldkey0 = self::$currentKey0;
$oldkey1 = self::$currentKey1;
self::$currentKey0 = ($oldkey0 >> 1 | $oldkey1 << 31) ^ $secondClientKey;
self::$currentKey1 = ((($oldkey1 >> 1 | $oldkey0 << 31) ^ $firstClientKey - 1) >> 1 | $oldkey0 << 31) ^ $firstClientKey;
}
return $data;
}
