Technology
This is the official technology community of Lemmy.ml for all news related to creation and use of technology, and to facilitate civil, meaningful discussion around it.
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Passkeys are asymmetric, meaning that the server only ever sees your public key. If the server gets breached, then only your public key is leaked, which isn't a big deal. Functionally, it's almost identical to SSH keys.
Since you should use a password manager anyways, it wouldn't make a difference if they get a randomised password or public key.
If they get your password they can impersonate you to the server. They can't do that with just the public key part of your passkey.
That's true.
Ideally my password should be hashed and salted anyways, so that shouldn't make a huge difference.