kAuth

Modern and secure authentication plugin for Minecraft servers. Developed by KEYDAL Projects.

Minecraft sunucuları için modern ve güvenli giriş/kayıt sistemi. KEYDAL Projects tarafından geliştirilmiştir.

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Screenshots / Ekran Görüntüleri

Rule Agreement / Kural Onayı

Register / Kayıt

Login / Giriş

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Features / Özellikler

Authentication / Kimlik Doğrulama

• Dialog GUI - Visual login screen on Paper 1.21.5+ clients
• Chat Fallback - Automatic chat-based login for older clients
• PBKDF2-SHA256 Encryption - Industry standard with 65,536 iterations
• Timing-safe Verification - Protection against side-channel attacks

Security / Güvenlik

• IP Brute-force Protection - Per-IP attempt limits with automatic blocking
• Account Limit - Maximum accounts per IP address
• Weak Password Blocking - Blocks common passwords and username-as-password
• Session Management - IP-based session cache for seamless reconnection
• Detailed Logging - All login, register, failed attempts and logout events

User Experience / Kullanıcı Deneyimi

• Rule Agreement System - Server rules shown on first registration
• Last Login Info - Shows last login IP and time on login
• Effect System - Title, subtitle, actionbar, sound and particle effects
• ViaVersion Support - All client versions supported via ViaVersion/ViaBackwards

Requirements / Gereksinimler

• Paper 1.20+ (1.21.5+ recommended for Dialog GUI)
• Java 21+
• ViaVersion + ViaBackwards (optional, for older client support)

Installation / Kurulum

1. Drop kAuth.jar into your plugins/ folder
2. Start the server
3. Edit plugins/kAuth/config.yml
4. Run /kauth reload

Commands / Komutlar

Command	Description	Permission
/giris <password>	Login to your account	kauth.use
/kayit <password> <confirm>	Create a new account	kauth.use
/cikis	Logout	kauth.use
/sifredegistir <old> <new> <confirm>	Change password	kauth.use
/kauth reload	Reload configuration	kauth.admin
/kauth kayitsil <player>	Delete an account	kauth.admin
/kauth sifredegistir <player> <new>	Change password (admin)	kauth.admin

Version Compatibility / Sürüm Uyumluluğu

Client Version	Login Mode
1.21.5+	Dialog GUI
1.21.0 - 1.21.4	Chat-based
1.20.x	Chat-based

ViaVersion + ViaBackwards required for older clients to connect.

Security Details / Güvenlik Detayları

Feature	Detail
Hashing	PBKDF2WithHmacSHA256, 65,536 iterations, 256-bit key
Salt	32-byte cryptographically secure random
Comparison	Constant-time (timing-safe)
Brute-force	Per-IP attempt limit with configurable block duration
Account limit	Configurable max accounts per IP
Weak passwords	Blocks 123456, qwerty, username, single-char repeats
Thread safety	ConcurrentHashMap for all shared state
Backward compat	Legacy SHA-256 hashes auto-detected

Build / Derleme

javac -cp paper-api.jar -d build --release 21 -encoding UTF-8 $(find src -name "*.java")
cp src/main/resources/*.yml build/
cd build && jar cf kAuth.jar .

Configuration / Yapılandırma

All settings are configurable via config.yml:

• Login/register messages and effects
• Password requirements (min/max length)
• Session timeout and IP verification
• Brute-force protection settings
• Server rules text
• Logging formats
• Visual effects (title, sound, particles)

License / Lisans

MIT License - See LICENSE for details.

Developer / Geliştirici

Egemen KEYDAL - KEYDAL Projects

• keydal.net
• keydal.tr