🔐 SparkLogin v2.0.0

SparkLogin is a modern, lightweight authentication plugin for Paper 1.21.x, featuring graphical dialog UI authentication for a seamless login experience. Built for servers that want secure login protection without unnecessary bloat, it combines fast async storage, strong password security, session-based auto-login, and an intuitive pre-join dialog system.

🚀 Key Features

🎨 Dialog UI Authentication (Only in 1.21.11+)

• Pre-join graphical dialogs using Paper's Dialog API
• Beautiful, modern interface for registration and login
• No more chat-based commands - click buttons to authenticate
• Seamless integration with server join flow
• Full player lockdown until authentication completed

🔄 AuthMe Migration (in plugin version 2.0.0)

• One-click migration from AuthMeReloaded to SparkLogin
• Supports SHA256 and BCRYPT hash types
• Automatic SQLite and MySQL/MariaDB detection
• Preserves all player passwords - no resets required
• Auto-upgrades to BCrypt on first successful login
• Backup creation before migration
• Progress tracking with action bar display

⚡ Performance Optimizations

• Account caching with Caffeine for reduced database load
• Optimized HikariCP connection pooling for SMP servers
• SQLite performance tuning (WAL mode, memory-mapped I/O)
• Async database operations to prevent server lag
• Configurable cache TTL and size

🔒 Security Features

• BCrypt password hashing (configurable cost factor)
• Login attempt limits with cooldown protection
• Anti-bot join protection
• IP-based session validation
• Max accounts per IP enforcement
• Brute-force delay protection

🎮 Player Experience

• Session auto-login with IP + time checks
• Full pre-login restriction: movement, commands, chat, inventory, PvP, damage, interaction blocked
• MiniMessage messages, titles, actionbar, and sounds
• Teleport back after successful login
• PlaceholderAPI support
• In-game auth location setup

🛠 Player Commands

/register <password> <confirmPassword>    - Register a new account
/login <password>                         - Login with your password
/changepassword <old> <new> <confirm>     - Change your password
/logout                                   - Log out and invalidate session

🛠 Admin Commands

/ss reload                                 - Reload plugin configuration
/ss setauthlocation                       - Set authentication teleport location
/ss clearauthlocation                     - Clear authentication teleport location
/ss resetpassword <player>                - Reset a player's password
/sparklogin info <player>                         - View player account information
/ss suspicious <player>                   - Check player login history
/sparklogin migrate authme                        - Migrate accounts from AuthMe (in plugin version 2.0.0)

📦 Installation

1. Download the latest SparkLogin-2.0.0.jar
2. Place it in your server's plugins/ folder
3. Restart your server
4. Configure plugins/SparkLogin/config.yml as needed
5. Enjoy modern dialog authentication!

🎯 Best For

• SMP servers looking for modern authentication
• Cracked authentication servers needing secure login
• Public servers with high player counts
• Networks requiring a clean, performant login system
• Servers migrating from AuthMe to a modern solution

📋 Requirements

• Minecraft: Paper 1.21.X
• Java: 21+
• Dependencies: None (shaded)

❤️ Support

If SparkLogin helps your server, consider leaving a rating or review.

📄 License

This plugin is developed by PavitraXD.

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Version 2.0.0 - Dialog UI Authentication & AuthMe Migration