[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 #9 from Jiewen Tan <jiewen_tan at apple.com> ---
(In reply to sweeden from comment #8)
> Is it reasonable to conclude that the reason my key stopped working for
> registration between 13.3.1 and 13.4 is that Safari is moving from CTAP1 to
> CTAP2?
> 
> When using CTAP1 / U2F attestation, the presence or absence of the PIN would
> have been irrelevant. This is no longer the case with CTAP2.

That's probably not accurate. WebKit should always prefer CTAP2 if it is available. There was a bug that WebKit doesn't recognize authenticator that supports more than 2 protocols, and treat them all like U2F.

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