Re: [webauthn] Drop generic client extension processing? (#1730)

> crepProps (which is a joke anyway since it's not signed and is open to manipulation).

FWIW [credProps](https://www.w3.org/TR/webauthn-3/#sctn-authenticator-credential-properties-extension) is a client registration extension, generated by the client *after* the ceremony with the authenticator, and therefore cannot be signed. It is not meant to be proof of anything. It is designed to be a signal to RPs of what the client actually ended up using in its registration ceremony with the authenticator and is specifically designed to help in cases when [residentKey](https://www.w3.org/TR/webauthn-3/#dom-authenticatorselectioncriteria-residentkey) is set to preferred. It was envisioned this would help the RP decide what use cases the credential might be used for in future (username-less flow or 2FA only) and allow the RP to offer guidance to the user on same.

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Received on Thursday, 12 May 2022 01:22:29 UTC