QLogin Professional | Secure Authentication for Paper

QLogin Professional
Secure. Lightweight. Reliable.
QLogin Professional is a Minecraft authentication plugin designed to help server owners manage player accounts with a focus on security, simplicity, and administration.

Built for Paper servers, QLogin combines player authentication, local SQLite storage, password hashing, login protection, and administrative diagnostic tools in one plugin.

Features
Authentication System

• Player registration and login commands.
  
  
• Password change and logout functionality.
  
  
• Secure password hashing with randomly generated salts.
  
  
• Configurable login protection and failed-attempt limits.
  
  
• Login timeout support.
  

️ Security

• Protection against repeated failed login attempts.
  
  
• Restricted player access before authentication.
  
  
• Security event logging without recording passwords.
  
  
• Administrative tools for inspecting authentication-related issues.
  

️ SQLite Database

• Local SQLite database storage.
  
  
• Database health checks.
  
  
• Database backup functionality.
  
  
• Backup integrity verification.
  

⚙️ Administration

• /qlogin doctor — Check the configured database and basic environment.
  
  
• /qlogin backup — Create a database backup.
  
  
• /qlogin audit — Inspect recent security events.
  
  
• /qlogin audit <player> — Inspect available security events for a player.
  

Player Commands

• /register <password> <confirm> — Register an account.
  
  
• /login <password> — Authenticate an account.
  
  
• /logout — End the current authenticated session.
  
  
• /changepassword <old-password> <new-password> — Change an account password.
  

Compatibility

• Minecraft Java Edition 1.21.11
  
  
• Paper
  
  
• Java 21
  
  
• SQLite
  

Installation

1. Build the project using Maven and Java 21.
   
   
2. Place the generated QLogin JAR in your server's plugins folder.
   
   
3. Start the server and allow QLogin to generate its configuration and database.
   
   
4. Review the configuration before allowing players to register.
   
   
5. Test the authentication and backup commands on a test server before production use.
   

Important Notes
QLogin Professional is designed for server owners who want a straightforward authentication solution with useful administration tools.

Compatibility, security behavior, and individual features should be verified against the exact released build. Always keep a separate backup of important player data.

Developer
QmcNETworks

Thank you for checking out QLogin Professional!