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authlogic
simple and effective hybrid authentication system for modded servers.
for players
- install the mod
- have an official account? that's it!
- don't have one? enter your password once during setup
DO NOT SHARE YOUR AUTHLOGIC FOLDER!
for admins
- install the mod
- set
online-modetofalse - (optionally) configure whitelist
DO NOT SHARE YOUR AUTHLOGIC FOLDER!
how it works
- player uses password to generate a unique per-server key
- server sends own public key
- player verifies server’s key and sends own public key
- server verifies player’s key
- authentication complete
why it's secure
- password never leaves your computer
- uses asymmetric keys to verify identities
- login process is encrypted
How to Install authlogic (Mod)
authlogic by 5w14 is verified for Fabric, Forge, Neoforge across Minecraft versions 1.20.1, 1.21.1, 1.21.10, 1.21.11, 1.21.2, 1.21.3, 1.21.4, 1.21.5 (latest release: 0.0.5+1.21.1-neoforge, file size: 137 KB). Follow the steps below to install it safely from ModCraft.tv:
- Click the Download button above and select your Minecraft version (1.20.1, 1.21.1, 1.21.10, 1.21.11, 1.21.2, 1.21.3, 1.21.4, 1.21.5) and platform (Fabric, Forge, Neoforge).
- Make sure you have the compatible loader or environment installed for Fabric, Forge, Neoforge.
- Move the downloaded authlogic file into your Minecraft
.minecraft/modsfolder and launch the game.
All Versions
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[0.0.5+1.21.1-fabric] 0.0.5+1.21.1-fabric
by 5w14 on Sep 03, 2026
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- added a way to force offline-mode auth for clients. see config/authlogic/config.json (requested in [#2](https://github.com/5w14/authlogic/issues/2))
[0.0.4+1.21.1-fabric] authlogic 0.0.4+1.21.1-fabric
by 5w14 on May 03, 2026
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fixed blurry text rendering on password setup screen
