A new watermarking approach for replay attack detection in LQG systems

@article{Khazraei2017ANW,
  title={A new watermarking approach for replay attack detection in LQG systems},
  author={Amir Khazraei and Hamed Kebriaei and Farzad Rajaei Salmasi},
  journal={2017 IEEE 56th Annual Conference on Decision and Control (CDC)},
  year={2017},
  pages={5143-5148}
}
The problem of detecting replay attack to the linear stochastic system with Kalman filer state estimator and LQG controller is addressed. Under replay attack to output measurements of the system, a dynamic watermarking method is proposed which is dependent on the dynamics of the system as well. While preserving the stability of the main system, the conditions on the parameters of the watermarking dynamics is obtained so that the attack can be revealed by destabilization of a residual trajectory… CONTINUE READING