ARM CC

The Armv9 architecture is poised to introduce a novel secure execution environment known as Realms. Realms requires only minimal adjustments to the hardware and heavily relies on firmware for its functionalities. This design allows existing applications to continue functioning without modification, while benefiting from heightened security.

Within this section, we delve into the inner workings of Realms. We explore how the correctness of the firmware was established through the application of the Coq proof assistant. Additionally, we present performance benchmarks that compare the efficiency of Realms and outline key distinctions between Realms and established secure enclaves.