Switching for Unpredictability: A Proactive Defense Control Approach
Switching for Unpredictability: A Proactive Defense Control Approach
复制标题
针对不可预测性进行切换：主动防御控制方法
DOI：
10.23919/acc.2019.8815323
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发表时间：
2019
期刊：
影响因子：
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通讯作者：
K. Vamvoudakis
中科院分区：
文献类型：
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作者：
Aris Kanellopoulos;K. Vamvoudakis
在本文中，我们考虑的问题，在一个对抗性的环境中安全地操作的网络物理系统。我们介绍的防御机制是主动的性质，并采用移动目标防御的原则。防御实现利用开关结构来持续地和随机地改变系统相对于其致动器和其传感器的行为。因此，降低了对手成功扫描系统以准备攻击的能力。系统运行的不可预测性通过熵度量来量化，熵度量随后被优化。定理表明系统的稳定性下主动切换。仿真结果表明，所提出的方法的有效性在一个简化的飞机模型。
In this paper, we consider the problem of securely operating a cyber-physical system in an adversarial environment. The defending mechanism we introduce is proactive in nature and employs the principles of moving target defense. The defense implementation utilizes a switching structure to persistently and stochastically alter the behavior of the system with respect to both its actuators and its sensors. Thus, the ability of an adversary to successfully scan the system in preparation for the attack is decreased. The unpredictability of the system's operation is quantified by an entropy metric which is subsequently optimized. Theorems are presented that show stability of the system under proactive switching. Simulations show the efficacy of the proposed approach on a simplified aircraft model.