Re: [webauthn] Consider allowing RPs to indicate that they want platform authenticators to be synced across devices

In practice, yes. There's no API for expressing this particular preference, but the only way for the RP to enforce - or even know - anything about how the authenticator operates is to require and verify a trusted attestation statement (with the assumption that trusted authenticators do behave as promised by their certificate/vendor/whatever). If the RP does not verify or ask for attestation (which it won't by default, since `attestationConveyance` defaults to `"none"`), then the authenticator can in practice do whatever it wants.

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Received on Friday, 29 June 2018 10:24:41 UTC