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|Lin, L., Zhu, Y. & Su, R. (2020). Synthesis of covert actuator attackers for free. Discrete Event Dynamic Systems, 30(4), 561-577. https://dx.doi.org/10.1007/s10626-020-00312-2
|In this paper, we shall formulate and address a problem of covert actuator attacker synthesis for cyber-physical systems that are modeled by discrete-event systems. We assume the actuator attacker partially observes the execution of the closed-loop system and is able to modify each control command issued by the supervisor on a specified attackable subset of controllable events. We provide straightforward but in general exponential-time reductions, due to the use of subset construction procedure, from the covert actuator attacker synthesis problems to the Ramadge-Wonham supervisor synthesis problems. It then follows that it is possible to use the many techniques and tools already developed for solving the supervisor synthesis problem to solve the covert actuator attacker synthesis problem for free. In particular, we show that, if the attacker cannot attack unobservable events to the supervisor, then the reductions can be carried out in polynomial time. We also provide a brief discussion on some other conditions under which the exponential blowup in state size can be avoided. Finally, we show how the reduction based synthesis procedure can be extended for the synthesis of successful covert actuator attackers that also eavesdrop the control commands issued by the supervisor.
|Ministry of Education (MOE)
|RG91/18-(S)-SU RONG (VP)
|Discrete Event Dynamic Systems
|© 2020 Springer Science Business Media, LLC, part of Springer Nature. All rights reserved.
|Engineering::Electrical and electronic engineering
|Synthesis of covert actuator attackers for free
|School of Electrical and Electronic Engineering
|This work is financially supported by Singapore Ministry of Education Academic Research Grant RG91/18-(S)-SU RONG (VP), which is gratefully acknowledged.
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|EEE Journal Articles
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