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Trust establishment in cooperating cyber-physical systems

: Rein, A.; Rieke, R.; Jäger, M.; Kuntze, N.; Coppolino, L.


Bécue, A.:
Security of industrial control systems and cyber physical systems : First workshop, CyberICS 2015 and first workshop, WOS-CPS 2015 Vienna, Austria, September 21-22, 2015; Revised selected papers
Cham: Springer International Publishing, 2016 (Lecture Notes in Computer Science 9588)
ISBN: 978-3-319-40384-7 (Print)
ISBN: 978-3-319-40385-4 (Online)
Workshop on Cyber Security of Industrial Control Systems (CyberICS) <1, 2015, Vienna>
Workshop on the Security of Cyber-Physical Systems (WOS-CPS) <1, 2015, Vienna>
Fraunhofer SIT ()

Cooperating systems are systems of systems that collaborate for a common purpose. Cooperating cyber-physical systems often base important decisions on data gathered from external sensors and use external actuators to enforce safety critical actions. Using the example of a hydroelectric power plant control system, this paper analyzes security threats for networked cooperating systems, where sensors providing decision critical data are placed in non-protected areas and thus are exposed to various kinds of attacks. We propose a concept for trust establishment in cyber-physical cooperating systems. Using trusted event reporting for critical event sources, the authenticity of the security related events can be verified. Based on measurements obtained with a prototypical realisation, we evaluate and analyze the amount of overhead data transmission between event source and data verification system needed for trust establishment.