Security in Cyber-Physical Systems: Controller Design Against Known-Plaintext Attack
Ye Yuan, Yilin Mo

Citation
Ye Yuan, Yilin Mo. " Security in Cyber-Physical Systems: Controller Design Against Known-Plaintext Attack". Conference on Decision and Control 2015, IEEE, 15, December, 2015.

Abstract
A substantial amount of research on the security of cyber-physical systems assumes that the physical system model is available to the adversary. In this paper, we argue that such an assumption can be relaxed, since even if the physical system model is unknown, the adversary might still be able to identify it by observing the control input and sensory data from the system. In such a setup, the attack with the goal of identifying the system model using the knowledge of input-output data can be categorized as a Known-Plaintext Attack (KPA) in the information security literature. We first prove a necessary condition and a sufficient condition, under which the adversary can successfully identify the transfer function of the physical system. Furthermore, we design an algorithm, which is based on spectral factorization, for the adversary to numerically compute the physical system model. We then provide a low-rank controller design which renders the system unidentifiable to the adversary, while trading off the LQG performance. Finally, a numerical example is provided to illustrate the effectiveness of the proposed controller design.

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Citation formats

• HTML

  Ye Yuan, Yilin Mo. <a
  href="http://www.terraswarm.org/pubs/526.html">
  Security in Cyber-Physical Systems: Controller Design
  Against Known-Plaintext Attack</a>, Conference on
  Decision and Control 2015, IEEE, 15, December, 2015.

• Plain text

  Ye Yuan, Yilin Mo. " Security in Cyber-Physical
  Systems: Controller Design Against Known-Plaintext
  Attack". Conference on Decision and Control 2015, IEEE,
  15, December, 2015.

• BibTeX

  @inproceedings{YuanMo15_SecurityInCyberPhysicalSystemsControllerDesignAgainst,
      author = {Ye Yuan and Yilin Mo},
      title = { Security in Cyber-Physical Systems: Controller
                Design Against Known-Plaintext Attack},
      booktitle = {Conference on Decision and Control 2015},
      organization = {IEEE},
      day = {15},
      month = {December},
      year = {2015},
      abstract = { A substantial amount of research on the security
                of cyber-physical systems assumes that the
                physical system model is available to the
                adversary. In this paper, we argue that such an
                assumption can be relaxed, since even if the
                physical system model is unknown, the adversary
                might still be able to identify it by observing
                the control input and sensory data from the
                system. In such a setup, the attack with the goal
                of identifying the system model using the
                knowledge of input-output data can be categorized
                as a Known-Plaintext Attack (KPA) in the
                information security literature. We first prove a
                necessary condition and a sufficient condition,
                under which the adversary can successfully
                identify the transfer function of the physical
                system. Furthermore, we design an algorithm, which
                is based on spectral factorization, for the
                adversary to numerically compute the physical
                system model. We then provide a low-rank
                controller design which renders the system
                unidentifiable to the adversary, while trading off
                the LQG performance. Finally, a numerical example
                is provided to illustrate the effectiveness of the
                proposed controller design. },
      URL = {http://terraswarm.org/pubs/526.html}
  }
  

Posted by Yilin Mo on 25 Mar 2015.
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