关键词: 拟态防御, 工业控制器, 异构执行体, 裁决, 调度

Abstract: AbstractAiming at the security issues of industrial systems, according to the dynamic heterogeneous redundancy (DHR) model in the mimic defense theory, and combined with the actual application scenarios of industrial systems. Firstly, this paper proposed a hybrid adjudication method, which aims at four heterogeneous executants for industrial field protocols. And then an executive scheduling method under limited heterogeneous resources is proposed, which based on the heterogeneity of the executive body set and the commonmode defense coefficient. Finally, the algorithm in this paper and the random scheduling algorithm will be simulated and analyzed. The results show that the new algorithm can not only effectively support complex simulated industrial control application scenarios, which mixed digital and analog signals, but also can quickly identify common mode attack, reduce the common mode escape time of the system, and further improve the defense capability of industrial control system.Key words mimic defense; industrial controller; heterogeneous actuator; arbitration; scheduling

Key words: mimic defense, industrial controller, heterogeneous actuator, arbitration, scheduling