Hardware Trust Anchor Authentication for Updatable IoT Devices
Dominik Lorych, Christian Plappert · 2024
Secure firmware update mechanisms and Hardware Trust Anchors (HTAs) are crucial in securing future IoT networks. Among others, HTAs can be used to shield security-sensitive data like cryptographic keys from unauthorized access, using hardware isolation. Authentication mechanisms for key usage, however, are difficult to implement since corresponding credentials need to be stored outside the HTA. This makes them vulnerable against host hijacking attacks, which in the end also undermines the security gains of the HTA deployment.