Re: [webauthn] residentKey: "preferred-if-unlimited"? (#1822)

The problem tho is that the problem in the first place is ctap2.0 and that
those devices generally cannot be updated, unlike webauthn which is
comparatively easy to update as that's just a thing generally in software
on the client

Emil Lundberg ***@***.***> schrieb am Di., 10. Jan. 2023,
16:27:

> As I recall, the consensus last time we discussed this on the WG call was
> that residentKey: "preferred" should continue to work as it currently
> does when storage capacity is not a concern, but it's reasonable to
> recommend client implementations to be less generous when it is - for
> CTAP2.0 devices in particular.
>
> But that's also why we decided no change is needed in WebAuthn - it's
> specifically a CTAP2.0 concern, which is beyond the WebAuthn authenticator
> model and should be handled in CTAP specs/guidelines instead. As is,
> WebAuthn doesn't even have a concept of authenticator storage *capacity*,
> only a binary storage *capability*.
>
> I'm a bit torn on whether WebAuthn *should* have such a concept, but I'm
> still leaning toward calling this out of scope. These are vendor-specific
> implementation concerns, we shouldn't clutter WebAuthn with them.
>
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Received on Tuesday, 10 January 2023 15:37:23 UTC