Delay-Induced Watermarking for Detection of Replay Attacks in Linear Systems

• URL: http://arxiv.org/abs/2404.00850v1
• Date: Mon, 1 Apr 2024 01:34:30 GMT
• Title: Delay-Induced Watermarking for Detection of Replay Attacks in Linear Systems
• Authors: Christoforos Somarakis, Raman Goyal, Erfaun Noorani, Shantanu Rane,
• Abstract summary: A state-feedback watermarking signal design for the detection of replay attacks in linear systems is proposed. The proposed secure control scheme holds promise of being superior to conventional, feed-forward, watermarking schemes.
• Score: 1.143707646428782
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: A state-feedback watermarking signal design for the detection of replay attacks in linear systems is proposed. The control input is augmented with a random time-delayed term of the system state estimate, in order to secure the system against attacks of replay type. We outline the basic analysis of the closed-loop response of the state-feedback watermarking in a LQG controlled system. Our theoretical results are applied on a temperature process control example. While the proposed secure control scheme requires very involved analysis, it, nevertheless, holds promise of being superior to conventional, feed-forward, watermarking schemes, in both its ability to detect attacks as well as the secured system performance.

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