Re: [webauthn] devicePubKey → supplementalPubKeys (#1957)

> Are there requirements for an RP to know if the _user_ in control of the credential has changed? I know that in native mobile apps its typically possible to get signals when enrolled biometrics changes, and in some cases apps require reauthentication (i.e. re-identity-proofing) when such a thing happens. If so, is it practical or possible for a provider to signal whether or not, from that provider's perspective, the user account (belonging to the passkey provider) exercising the credential has changed?
> 
> The point here is, are we satisfying real RP policy requirements with the proposals in this extension.

I think the provider should state whether sharing passkeys with other people is a use case that is actively supported - and whether exporting the provider-scoped key is also actively support or not (hopefully not).

But: attestation of the provider-scoped key is needed for the RP to understand how much trust they want to put into it.

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Received on Monday, 11 September 2023 13:06:20 UTC