I hope we can shoehorn rsa-sha2-256 into working with Yubikeys and other hardware tokens, or else they've just become rather useless.https://twitter.com/juliocesarfort/status/1265541783741706241 …
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It doesn't, the keypair is the same format, but the hash to be used *with* it could be encoded in the keytype, or not.
Given what I just found above, ssh-rsa keys are usable with SHA2 already (and that already happens by default).
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