Register And Login Plugin

Lightweight offline-mode server registration & login plugin to prevent account theft on offline servers.

✨ Features

1. Registration System Command: /register <password> <confirmPassword> Unregistered players cannot move or chat, and may only run the register command. The two entered passwords must match. Players will be logged in automatically upon successful registration.

2. Login System Command: /login <password> Registered players spawn in a locked state after joining the server, unable to move or chat. All restrictions are lifted after entering the correct password.

3. Persistent Data Storage Player accounts and passwords are saved at plugins/RegisterAndLoginPlugin/accounts/PlayerUUID.txt. Player UUIDs are used as filenames for account data, so accounts will not be lost even if players change their usernames. Data persists across server restarts.

4. Security Protection Exceeding three failed login attempts results in a 30-second IP ban to prevent brute-force attacks.

⚙️ Supported Servers

✅ Paper 1.21 ~ 26.2 ✅ Purpur 1.21.x ❌ Not compatible with Spigot, Fabric.

🎉 Updates

1.0.1: Added password hash encryption, automatic language switching Planned features: password change, login timeout kick, and a separate build compatible with version 26.1.

📂 Open Source Information

This project is open-sourced under the MIT License Source Repository: https://github.com/chfengciyueaiwan/RegisterAndLoginPlugin Feedback and pull requests are welcome to improve this plugin.