> ## Documentation Index
> Fetch the complete documentation index at: https://docs.lukittu.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Simple

# Simple Java Example

You can find a pre-made example plugin here: [lukittu-java-simple](https://github.com/KasperiP/lukittu-java-simple).\
This example demonstrates a robust implementation of the Lukittu license verification system for Java applications, specifically built as a Minecraft Bukkit/Spigot plugin.

## Features

* **Secure License Verification**\
  Implements a challenge-response mechanism with cryptographic signature verification using RSA/SHA256.

* **Comprehensive Error Handling**\
  Provides clear, user-friendly messages for various license states and error conditions.

* **Heartbeat System**\
  Periodically validates the license to ensure continued legitimacy.

* **Device Identification**\
  Generates a unique hardware-based identifier to limit installations per license.

* **Security Best Practices**\
  Includes documentation of proper security measures for production-level implementation.