RealSWATT: Remote Software-based Attestation for Embedded Devices under Realtime Constraints
Sebastian Surminski, Christian Niesler, Ferdinand Brasser, Lucas Davi, Ahmad‐Reza Sadeghi
Abstract
Smart factories, critical infrastructures, and medical devices largely rely on embedded systems that need to satisfy realtime constraints to complete crucial tasks. Recent studies and reports have revealed that many of these devices suffer from crucial vulnerabilities that can be exploited with fatal consequences. Despite the security and safety-critical role of these devices, they often do not feature state-of-the-art security mechanisms. Moreover, since realtime systems have strict timing requirements, integrating new security mechanisms is not a viable option as they often influence the device's runtime behavior. One solution is to offload security enhancements to a remote instance, the so-called remote attestation.