Re: [webauthn] Add instructions for passing unknown extensions to authenticators

Agree with @selfissued's feature-flag suggestion: https://github.com/w3c/webauthn/pull/789#issuecomment-364536969

Perhaps a Note is warranted?

Otherwise text seems OK, tho as @agl notes, RPs can send arbitrary (CBOR-encoded) data to authenticators, if this functionality is enabled.  FWIW, this threat _is_ addressed in the FIDO Security Reference: T-1.4.9, T-1.4.30.










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Received on Monday, 12 February 2018 18:34:09 UTC