this post was submitted on 11 Aug 2024
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Privacy
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Passwords can be leaked, mostly by bad security on server side.
Passkeys use secure keys, it checks public keys on both sides and send private key to authenticate, without both keys can't login or if the server is compromised.
It's like GPG or SSH works.
Close but private keys don't get sent.
It sends information encrypted via your public key to your client, then your client proves that it's the real owner of the key by decrypting the message, and then sending a new message back encrypted by the private key that the server can then verify.
This is what's better than a password, the information for providing authentication (the private key) never leaves your computer (where as you almost in all implementations of password based auth, send the password itself to the server).
A question, since you sound like you know what you're talking about. Is this analagous to password-free SSH? I.e., private key used to log in on the basis of a pre-agreed public key?
It's PKI, public key infrastructure. It's secure so it's used in many applications. Including ssh using keys.