AuthSystem

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.