Blastoidea An authentication token for Owner to prove they logged in to enable accepting firmware updates (insider attack resistance), lock state, verified boot state (OS versions, user flashed verified boot key), StrongBox hardware keystore used by apps, factory reset protection data (not used by GrapheneOS) and the Weaver slots. Hardware-based attestation is part of the StrongBox keystore API and tied to verified boot and other info passed by the boot chain on the main SoC. There's authenticated encryption between the secure element and the SoC secure core, so they're paired together at the factory. It's a separate chip so communicating with it has too much latency for it to be involved directly in disk encryption beyond the Weaver feature providing time-based throttling and more reliable data wiping for user profiles.