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Sign arbitrary data with your SSH keys

(www.agwa.name)
637 points h1x | 1 comments | 13 Nov 21 09:13 UTC | HN request time: 0.714s | source
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pizza ◴[13 Nov 21 10:03 UTC] No.29208734[source]▶
I get that they're "public" keys, but I was surprised to learn (and from somebody other than github themselves) that ssh public keys are just available at that github.com/username.keys URL (without there being an option to disable it, it seems?). Did most people already know that? Probably fine but just surprised. Just tried searching their authentication docs [0] and I don't get any results for "public key url" either

https://docs.github.com/en/authentication?query=public+key+u...

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1. _hyn3 ◴[13 Nov 21 17:12 UTC] No.29211357[source]▶
This seems to have been public for quite a while. It's also how Userify.com imports public keys from Github.com for years (and also imports from Gitlab.com, which copied Github's approach.) For some reason, Userify itself doesn't also allow easy export of its users' public keys.