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A comment on OpenSSH's Support for U2F/Fido Security. Parent comment

Re:OpenSSH's Support for U2F/Fido Security by ecesena on Tuesday November 05, 2019 @01:34PM (#21455225)
U2F/FIDO2 supports user verification (UV) in addition to user presence (UP). So you should be able to do the same, but I haven't tested if the current implementation supports it.
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Re:OpenSSH's Support for U2F/Fido Security by tialaramex on Tuesday November 05, 2019 @02:03PM (#21455500)
Their own documentation suggests these are the same thing and both refer to the need to press a button or close a contact or whatever:

Generically, the term “User Verification” may also refer to this “Test for User Presence”

from e.g.

https://fidoalliance.org/specs/fido-security-requirements-v1...

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Re:OpenSSH's Support for U2F/Fido Security by ecesena on Tuesday November 05, 2019 @03:00PM (#21456045)
Weird, this spec has a little bit of a different terminology. I think it's better to refer to CTAP2 or WebAuthn directly. UV refers to PIN or biometric, it's in addition to UP.

https://fidoalliance.org/specs/fido-v2.0-ps-20190130/fido-cl...

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Re:OpenSSH's Support for U2F/Fido Security by Boulth on Tuesday November 05, 2019 @03:59PM (#21456620)
Note that CTAP and WebAuthn are newer and although they contain U2F for backwards compatibility reasons U2F doesn't contain CTAP2 and WebAuthn. U2F is also surprisingly simple protocol (two specs on FIDO site).
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Re:OpenSSH's Support for U2F/Fido Security by ecesena on Tuesday November 05, 2019 @04:18PM (#21456800)
Yes, and exactly because FIDO2 is backward compatible with U2F the definition of UV can't be ambiguous, otherwise you could have older U2F keys that pretend to do FIDO2-UV when in fact they aren't.
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Re:OpenSSH's Support for U2F/Fido Security by justincormack on Tuesday November 05, 2019 @06:29PM (#21458025)
Yubikey just announced a key with a fingerprint reader today.
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Re:OpenSSH's Support for U2F/Fido Security by jolmg on Tuesday November 05, 2019 @07:11PM (#21458392)
Besides the point that it wouldn't be a secure replacement for a password/PIN, I wonder if it would have support for multiple valid fingerprints. Some time ago, I got cut on my finger and was having some trouble getting my fingerprint recognized. It would suck to get locked out of stuff because of a cut.
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