CrusAuth Hybrid Authentication
Secure premium & cracked authentication for modern Minecraft servers.
Paper/Folia Core • Velocity Addon • BungeeCord Addon • SQLite • MySQL/MariaDB
What is CrusAuth?
CrusAuth is a modern Minecraft authentication plugin built for servers and networks that need a clean, secure and professional login system for both premium and cracked players.
The main resource includes the Paper/Folia backend authentication plugin. Proxy support is available through optional paid addons for Velocity and BungeeCord.
CrusAuth is designed to replace outdated authentication setups with a modern hybrid system: cracked players register and log in normally, while verified premium players can be authenticated automatically.
Why CrusAuth?
Most authentication plugins are either too old, too simple, or not designed around modern proxy networks.
CrusAuth focuses on the problems real server owners care about:
- Premium players should not be forced to type passwords every time.
- Cracked players still need a secure /register and /login system.
- Premium usernames should be protected from cracked impersonation.
- Proxy and backend communication should not be blindly trusted.
- Fresh installs should work without requiring MySQL.
- Large networks should still have MySQL/MariaDB support when needed.
Core Features
Premium Auto-Login
Verified premium players can be authenticated automatically, creating a smoother join experience without unnecessary login prompts.
Cracked Player Login & Register
Cracked players are protected with a traditional authentication flow.
Premium Name Protection
CrusAuth can protect premium usernames from cracked impersonation in hybrid networks.
When a premium account has claimed a username, cracked players attempting to use that protected identity can be blocked before they are allowed into the backend gameplay flow.
Paper & Folia Backend Protection
Unauthenticated players are restricted until they successfully authenticate.
- Movement protection
- Chat protection
- Command restriction
- Inventory protection
- Interaction protection
- Block break/place protection
- Damage protection
- Safe post-auth teleport handling
- Limbo/auth spawn support
Secure Proxy Bridge
CrusAuth uses a signed proxy-to-backend bridge for communication between the proxy module and backend plugin.
Flexible Storage
CrusAuth uses SQLite by default, so most servers can install and start immediately without setting up an external database.
For larger networks, MySQL/MariaDB can be enabled when shared storage is needed.
Available Addons
CrusAuth is modular. You only install the parts your network needs.
- Velocity Proxy Module - required for Velocity hybrid premium/cracked networks
- BungeeCord Proxy Module - required for BungeeCord hybrid premium/cracked networks
You only need one proxy addon depending on your network setup.
Standalone cracked authentication on a Paper/Folia server does not require a proxy addon.
Installation Overview
Basic setup steps
- Install the CrusAuth Paper/Folia core plugin on your backend server.
- Start the server once to generate the config.
- Add your license key.
- Use SQLite by default or configure MySQL/MariaDB if needed.
- If using Velocity or BungeeCord, install the correct proxy addon.
- Set the same secure bridge secret on proxy and backend.
- Restart your server/network.
- Test premium and cracked login flows.
Full setup details are available in the documentation.
Documentation
This page is only a product overview. Full setup, configuration and troubleshooting details are available in the documentation.
- Installation Guide
- Paper/Folia Setup
- Velocity Setup
- BungeeCord Setup
- SQLite, MySQL and MariaDB Storage
- Commands and Permissions
- Premium & Cracked Account Behavior
- Security Notes
- Troubleshooting
License Information
CrusAuth requires a valid license key.
After purchase, your license key is delivered manually through BuiltByBit messages or Discord Server.
Support
Support is available for:
- Installation issues
- Proxy setup
- Premium/cracked behavior setup
- Bug reports
- License activation issues
Before requesting support, please provide:
- Your server platform and version
- Your proxy type and version, if used
- Your CrusAuth version
- Startup logs
- Relevant config sections with secrets, passwords and license keys removed
