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A "Sign in with fediverse" button? (lemm.ee)

submitted 1 month ago* (last edited 1 month ago) by tomatol@lemm.ee to c/fediverse@lemmy.world

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Just like apps and websites implement "Sign in with Apple" and Google couldn't we build some kind of federated authentication provider? Then everyone creates an account there and fedi apps can implement an easy way to authenticate users. Even non fedi apps could use it. I imagine user interaction between different fediverse platforms would be much easier too.

I guess could run an auth instance. Ideally everyone would run their own, keeping your data safe.

Is there something likes this already? Saw some discussion here but not much else https://socialhub.activitypub.rocks/t/single-sign-on-for-fediverse/712

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[-] 4am@lemm.ee 10 points 1 month ago* (last edited 1 month ago)

So we should make a remote single point of failure, maintained by someone who probably isn’t a security expert or working on it full time?

No, this is unfortunately the opposite of what we should be doing.

EDIT: I should also add that people who make password managers literally focus on only that. They understand what they are making is a huge target and any of them worth their salt have independent audits and spend much of their time on design decisions related to security. Point being: typically the weakest link in a password manager is you. Set a good password, use a YubiKey or some other device, use 2FA, etc.

[-] tomatol@lemm.ee 1 points 1 month ago

Not a single point but multiple points. Anyway I'm not gonna pretend I'm an expert in security! I just think it's a feature worth exploring.

[-] 4am@lemm.ee 2 points 1 month ago

If someone runs an auth server, and I use it to identify me, and then it goes away, then I’m out of luck, my account is gone. This is the same problem we have now (with logins being tied to instances), except that it introduces a new place for a failure to occur. Rather than just relying on a lemmy instance, I also need to rely on an auth server to be maintained, safe, and secure.

If I went to another auth server, then it’d give me a different identity and that would not make much sense.