ModsJava
authlogic
I don't know my version or loader
Open the Minecraft launcher and look at the profile you play on — it names both, like fabric-loader-1.21.4. The version also shows in the bottom-right corner of the game's main menu.
No loader in the profile name? Then it's plain Minecraft, and these mods won't run — you need Fabric or NeoForge installed first.
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
Quick facts
- Edition: Minecraft Java
- File type: .jar
- Minecraft versions listed: 1.21.1, 1.21.2, 1.21.3
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: Opens on Modrinth — not every file is mirrored on our own servers.
Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.
Verified by MCModsHub
- Ships as auth-logic-0.0.4+1.21.1-neoforge.jar — drop this file into the mods folder
- Download size: 134 KB
- Download link checked 31 Aug 2026 — working
These come from our own check of the pack file, not from the source page.