Re: [webauthn] Discovery of migrated credentials (#2340)

> One ask is that the signal be as reliable as possible- if it can be signed as part of the authentication response that would be preferred over an unsigned client extension.

This is I think worth spending a little bit of time on. The credProps path from last year still seems sensible to me a year later. But I also like Shane's idea of adding the AAGUID to part of the data that the signature is generated over during auth to give a bit of tamper resistance to AAGUID's conveyance. Not for using it for policy, but just a modicum of trust that the authenticator was able to convey its unattested identity.

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Received on Tuesday, 14 October 2025 22:35:37 UTC