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Comment by dugite-code

6 days ago

This is a really interesting signal tbh.

While it sounds like it already works on GrapheneOS having a corporation come out and say they won't go out of their way to break it is quite unusual.

It requires a positive action from the application developer to include GrapheneOS's keys as well as Google's keys. So this is a deliberate positive step, rather than a default.

  • Only if they are using hardware key attestation. From what I've read elsewhere it looks like it was never broken so maybe they never went that far before.

    • Apps rarely use hardware key attestation directly but rather use it via the Play Integrity API. Play Integrity device and strong integrity levels ban using a non-Google-certified OS. Play Integrity uses hardware key attestation for both integrity levels and it's a hard requirement for strong integrity. Developers enforcing one of those integrity levels to use their service need to either stop doing it or add explicit support for non-Google-certified operating systems via key attestation. Roblox's documentation shows they're taking the latter approach.