Security is a crucial and far-reaching topic for any electronics-based equipment manufacturer, from battery-powered wireless connected temperature sensors, to high-power industrial motor control applications. Ensuring an end-product is secure is not just about protecting adversaries gaining access to secret keys and passwords. It also encompasses protecting the application’s software intellectual property from being copied, and the compromised device being used as a platform to take control and exploit other systems.
Isolation is a crucial aspect of security but achieving it with today’s functionally-rich and highly integrated processors is a challenge. In this white paper, we introduce the Arm® TrustZone® system-wide approach to achieving security and how TrustZone is implemented on the Renesas Advanced (RA) Family of 32-bit microcontrollers.