Home // International Journal On Advances in Security, volume 16, numbers 1 and 2, 2023 // View article

Runtime Trustworthiness Evaluation of Evolving Cyber Physical Systems

Authors:
Rainer Falk
Steffen Fries

Keywords: system integrity; trustworthiness; device integrity; attestation; lifecycle; resilience; cyber physical systems; Internet of Things; cyber security

Abstract:
The integrity of Cyber Physical Systems (CPS) needs to be protected to ensure a reliable, trustworthy operation. The hardware and software components of a CPS must be in a well-defined, approved configuration state. However, such system integrity protection becomes increasingly challenging with CPSs that are flexibly reconfigured to address evolving demands. An approach for integrity monitoring for such dynamic CPSs is described. Instead of preventing changes to a CPS, the focus is on detecting changes and on analyzing and checking whether the detected changes are in-line with a policy defining permitted changes. A key element is a reliable device lifecycle state attestation, so that a CPS integrity monitoring system can determine the current configuration state of CPS components and the way in which it was changed.

Pages: 86 to 95

Copyright: Copyright (c) to authors, 2023. Used with permission.

Publication date: June 30, 2023

Published in: journal

ISSN: 1942-2636