Attack-Tolerant networked control system based on the deception for the cyber-attacks

In this paper, we propose a new security mechanism for networked control system, which has the ability to stopping the cyber-attacks. In addition, the proposed mechanism provides the last line of defense when its encryption is broken. This defensive line is called “Attack-Tolerant” and it is based on the deception for the cyber-attacks. The attack-tolerant scheme is able to making the attacker believes that he has achieved the desired goal and as a result, the attacker stops the attack method improvement. Furthermore, there is an indication for the attacks will be included within the sensor reading which will be sent from the remote plant side to the local controller side. In order to implement the proposed mechanism, a specific algorithm will be designed along with Data Encryption Standard (DES), Message Digest (MD5), timestamp, and the mathematical model of the plant with acceptable limit of uncertainty. The simulation results of the proposed mechanism have been found to be satisfactory.