IIoTEED: an enhanced, trusted execution environment for industrial IoT edge devices

With the advent of the Internet of Things (IoT), security has emerged as a major design goal for smart connected devices. This explosion in connectivity created a larger attack surface area. Software-based approaches have been applied for security purposes; however, these methods must be extended with security-oriented technologies that promote hardware as the root of trust. The ARM TrustZone can enable trusted execution environments (TEEs), but existing solutions disregard real-time needs. Here, the authors demonstrate why TrustZone is becoming a reference technology for securing IoT edge devices, and how enhanced TEEs can help meet industrial IoT applications real-time requirements.This work has been supported by COMPETE (POCI-01-0145-FEDER-007043) and Fundacao para a Ciencia e Tecnologia (FCT) under grant SFRH/BD/91530/2012 and UID/CEC/00319/2013.