The plugin allows secure player login and registration on a Minecraft server, protecting accounts from unauthorized access.
AuthSystem is a lightweight and secure player authentication plugin for Minecraft 1.21 (Paper/Spigot).
Features:
/register – Create an account (first time only).
/login or /l – Log in after joining.
/changepassword – Change your password.
Admin commands (/verify – requires verify.admin permission):
/verify reload – Reload player data.
/verify reset – Delete player's account (forces re-registration).
/verify changepass – Force-set a new password.
Protection:
Unlogged players cannot:
Chat:
Use commands (except auth commands)
Break/place blocks
Interact with blocks
Stay longer than 2 minutes (auto-kick)
Security:
Passwords are hashed with SHA-256 + unique random salt (never stored in plain text).
Data saved in plugins/AuthSystem/players.yml.
Simple, fast, secure – perfect for survival or small servers that need basic login protection without heavy plugins.