[Webkit-unassigned] [Bug 207951] [WebAuthn] Yubikey 5ci lightning does not work in iOS 13.4 beta

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=207951

--- Comment #12 from Jiewen Tan <jiewen_tan at apple.com> ---
(In reply to sweeden from comment #11)
> Hmm - one additional question on this. When I use Chrome and set rk=false,
> uv=discouraged, I am not prompted for a PIN even if one is set on the
> authenticator, and I am able to register and get a fido2-u2f attestation. I
> guess with this combination of flags, Chrome is falling back to CTAP1. As
> soon as I change uv=preferred, then I get PIN prompt, plus I get a CTAP2
> packed attestation format.
> 
> This is not the case with WebKit. Is this a bug, or just a different
> interpretation of how to map webauthn parameters to CTAP?

Probably later, I don't think the CTAP 2.0 spec has specified such a fallback.

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