LTS Auth Mod

A server-side authentication mod for Minecraft Forge 1.20.1.

Features

• Simple Authentication: Players can register and login using simple commands.
• Player Restrictions: Unauthenticated players are frozen in place and cannot interact with the world.
• Auto-Kick: Players are automatically kicked if they fail to authenticate within 60 seconds.
• JSON Storage: Player data is stored in a simple JSON file for easy management.
• Server-Side Only: Clients do not need to install the mod to join the server.

Commands

• /register <password>: Register a new account.
• /login <password>: Login to an existing account.

Configuration

The mod stores player data in config/lts_auth/players.json.

{
  "12345678-1234-1234-1234-123456789012": {
    "uuid": "12345678-1234-1234-1234-123456789012",
    "username": "PlayerName",
    "password": "plaintext_password",
    "registeredAt": 1769890665260
  }
}

Messages in config/lts_auth/messages.yml

messages:
  mod_initialized: "&aLTS Auth Mod initialized!"
  register_success: "&aRegistration successful. You are now logged in."
  login_success: "&aLogin successful."
  login_prompt: "&6Please log in using: /login <password>"
  register_prompt: "&6Please register using: /register <password>"
  login_reminder: "&cPlease log in using: /login <password>"
  register_reminder: "&cPlease register using: /register <password>"
  timeout_kick: "Authentication time has expired!"
  already_registered: "&cYou are already registered!"
  password_too_short: "&cPassword must contain at least 4 characters!"
  not_registered: "&cYou are not registered! Use /register <password>"
  already_logged_in: "&cYou are already logged in!"
  invalid_password: "&cInvalid password!"
  storage_load_failed: "Failed to load player data"
  storage_save_failed: "Failed to save player data"

Installation

1. Download the mod JAR file.
2. Place it in the mods folder of your Forge 1.20.1 server.
3. Restart the server.