Re: [webauthn] Enforce backup eligibility during assertion (#1791)

I agree that it's probably good to set an explicit standard for how RPs should react if `BE` changes, or if `BE=0, BS=1`, to encourage consistent behaviour between services.

I'm not sure what that should be, though. The user probably has little insight on, let alone control of, the flags, so rejecting the assertion or even revoking the credential seems unfair to the user. But if things don't break, there's little incentive for authenticator vendors to implement the flags correctly. But if things do break, there is incentive for RPs to ignore the recommendation to make their user experience more pleasant.

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Received on Tuesday, 30 August 2022 12:29:42 UTC