How to get the user info by the public key the user sent over ssh?

StackOverflow https://stackoverflow.com/questions/14826308

  •  09-03-2022
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Question

When a user connect over SSH with public key, how did Github detect which user it is?

ssh -T git@github.com
Hi **Ben**! You've successfully authenticated, but GitHub does not provide shell access.

How to implement such a feature, especially consider that the user info is in some database like MySQL?

Was it helpful?

Solution

I'm fairly certain this is done using a centralized authorized_keys file along with the command option. Check out the AUTHORIZED_KEYS FILE FORMAT section of the man page.

OTHER TIPS

User always sends login (git in your case). Public/private key pair is used only to verify user identify.

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