MiscPeripheral token algorithm (OLD!)

private static NBTTagCompound keyNbtTag = null;

public static int generateStackToken(ItemStack theStack, World worldp) {
  if ((worldp == null) || (!(worldp instanceof WorldServer)))
    throw new IllegalStateException("Item UUID encoding failed due to the world being null. Please report this!");

  WorldServer world = (WorldServer) worldp;

  String itemIdXorKey     = "a";
  String itemDamageXorKey = "b";

  String idKeyA = "c";
  String idKeyB = "d";
  String idKeyC = "e";

  if (keyNbtTag == null) {
    File keyFile = new File(world.getChunkSaveLocation(), "iuuidk.dat");
    if (keyFile.exists()) {
      try {
        keyNbtTag = CompressedStreamTools.read(keyFile);
      } catch (Throwable e) {
        keyNbtTag.printStackTrace();
        throw new IllegalStateException("Corrupted world UUID keys, please report this!");
      }
    } else {
      keyNbtTag = new NBTTagCompound();
      // RichardG867 is immature, Exhibit A
      keyNbtTag.setByte("IF_YOURE_WILLING_TO_CHEAT_GO_AHEAD", 0);

      keyNbtTag.setShort(itemIdXorKey    , (short)world.rand.nextInt(32768));
      keyNbtTag.setShort(itemDamageXorKey, (short)world.rand.nextInt(32768));

      keyNbtTag.setInteger(idKeyA, Math.abs(world.rand.nextInt()));
      keyNbtTag.setInteger(idKeyB, Math.abs(world.rand.nextInt()));
      keyNbtTag.setInteger(idKeyC, Math.abs(world.rand.nextInt()));

      try {
        CompressedStreamTools.write(keyNbtTag, keyFile);
      } catch (Throwable e) {
        throw new IllegalStateException("Corrupted world UUID keys, please report this!");
      }
    }
  }

  // RichardG867 is immature, Exhibit B
  String[] DIE_IN_A_FIRE = { "You are breaking the fun for other people who want to play this legit. Please go away." };

  short itemDamage            = (theStack.getItem() != null) && (theStack.getItem().isDamageable()) ? 0 : theStack.getItemDamage();

  short obfusicatedItemId     = (short) (theStack.itemID ^ keyNbtTag.getShort(itemIdXorKey));
  short obfusicatedItemDamage = (short) (itemDamage ^ keyNbtTag.getShort(itemDamageXorKey));

  int   itemIdentifier        = obfusicatedItemId * 32768 + obfusicatedItemDamage;

  int   idKey                 = keyNbtTag.getInteger(idKeyA) ^ keyNbtTag.getInteger(idKeyB) ^ keyNbtTag.getInteger(idKeyC);

  return itemIdentifier ^ idKey;
}