Title
An On-line Design of Physical Watermarks
Abstract
This paper considers the problem of designing physical watermark signals to protect a control system against replay attacks. We first introduce the replay attack model, where an adversary replays the previous sensory data in order to fool the controller to believe the system is still operating normally. The physical watermarking scheme, which leverages a random control input as a watermark to detect the replay attack is introduced. The optimal watermark signal design problem is then proposed as an optimization problem, which achieves the optimal trade-off between the control performance and attack detection performance. For the system with unknown parameters, we provide a procedure to asymptotically derive the optimal watermarking signal. Numerical examples are provided to illustrate the effectiveness of the proposed strategy.
Year
DOI
Venue
2018
10.1109/CDC.2018.8619632
2018 IEEE Conference on Decision and Control (CDC)
Keywords
DocType
Volume
physical watermark signals,control system,replay attack model,physical watermarking scheme,random control input,optimal watermark signal design problem,optimization problem,control performance,attack detection performance,online design
Conference
abs/1809.05299
ISSN
ISBN
Citations 
0743-1546
978-1-5386-1396-2
0
PageRank 
References 
Authors
0.34
5
4
Name
Order
Citations
PageRank
Hanxiao Liu134418.35
Jiaqi Yan28620.10
Yilin Mo389151.51
Karl Henrik Johansson43996322.75