Detection of Stealthy False Data Injection Attacks Against Cyber-Physical Systems:A Stochastic Coding Scheme

作     者：GUO Haibin PANG Zhonghua SUN Jian LI Jun GUO Haibin;PANG Zhonghua;SUN Jian;LI Jun

作者机构：State Key Lab of Intelligent Control and Decision of Complex SystemsSchool of AutomationBeijing Institute of TechnologyBeijing 100081China Beijing Institute of Technology Chongging Innovation CenterChongqing 401120China Key Laboratory of Fieldbus Technology and Automation of BeijingNorth China University of TechnologyBeijing 100144China China Industrial Control Systems Cyber Emergency Response TeamBeijing 100040China 

出 版 物：《Journal of Systems Science & Complexity》 (系统科学与复杂性学报（英文版）)

年 卷 期：2022年第35卷第5期

页      面：1668-1684页

核心收录：

学科分类：0810[工学-信息与通信工程] 1205[管理学-图书情报与档案管理] 0839[工学-网络空间安全] 08[工学] 0811[工学-控制科学与工程] 0812[工学-计算机科学与技术（可授工学、理学学位）] 

基　　金：supported by the National Natural Science Foundation of China under Grant Nos.61925303,62088101,U20B2073,61720106011,and 62173002 the National Key R&D Program of China under Grant No.2018YFB1700100 the Beijing Natural Science Foundation under Grant No.4222045 

主　　题：Attack detection cyber-physical systems(CPSs) stealthy FDI attacks stochastic coding 

摘      要：This paper,from the view of a defender,addresses the security problem of cyber-physical systems(CPSs)subject to stealthy false data injection(FDI)attacks that cannot be detected by a residual-based anomaly detector without other defensive *** detect such a class of FDI attacks,a stochastic coding scheme,which codes the sensor measurement with a Gaussian stochastic signal at the sensor side,is proposed to assist an anomaly detector to expose the FDI *** order to ensure the system performance in the normal operational context,a decoder is adopted to decode the coded sensor measurement when received at the controller *** this detection scheme,the residual under the attack can be significantly different from that in the normal situation,and thus trigger an *** design condition of the coding signal covariance is derived to meet the constraints of false alarm rate and attack detection *** minimize the trace of the coding signal covariance,the design problem of the coding signal is converted into a constraint non-convex optimization problem,and an estimation-optimization iteration algorithm is presented to obtain a numerical solution of the coding signal covariance.A numerical example is given to verify the effectiveness of the proposed scheme.