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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 @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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