alt Hacker NewsThe attestation actually has nothing to do with the browser, only the holder of the passkey's key material. You can satisfy the attestation by having a passkey on your Android device and doing the normal Bluetooth flow with your Firefox browser on your Framework laptop. So this mechanism is totally useless for enacting this plan.
The operating system doesn't manage attestation because that's totally useless for the stated goal of the attestation system. Enterprises don't want their SaaS vendors to accept passkeys from some random employee's BitWarden, instead of the hardware keys they issued the employee. If the OS manages attestation and doesn't send anything to the relying party, then it doesn't solve anybody's problem at all.
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Does Firefox support the Bluetooth flow on Linux at this time?
I do not want any business with Apple/Google/Microsoft at all, including owning an Android or iPhone for hardware attestation.
It seems like it will only be a matter of time before consumer sites start requiring a patched OS with an attestation bit set in the key.
Also, as I understand it, sites can whitelist credential hardware.
If not, then the attestation is security theater. I (or an attacker on your machine), can just make a sw emulator of a hw attestation device, and use that to protect my choice of OS, (and skim your credentials).
If a whitelist exists, then my “hijack your OS” plan works: Require the builtin macos/windows/signed chrome on signed os password managers. That’s 90% of the market (and dropping) right now.