信息物理融合系统网络安全综述

信息物理融合系统(cyber-physical systems,CPS)是集计算、通信和控制于一体的智能系统,实现网络和物理的深度协作和有机融合.目前CPS在关键的基础设施、政府机构等领域发挥着越来越重要的作用.由于物理限制,计算机和网络产生的安全漏洞会导致CPS遭受巨大的破坏,同时还会引起经济损失、社会动乱等连锁反应,所以研究CPS的安全问题对于确保系统安全运行具有重要意义.本文结合国内外的研究现状,概述了CPS安全控制和攻击检测的最新进展.首先本文总结了CPS典型的系统建模以满足对系统性能分析的需要.然后介绍了3种典型的网络攻击,即拒绝服务攻击、重放攻击和欺骗攻击.根据检测方法的类别,对CPS攻击检测的发展进行的概述.此外还讨论了系统的安全控制和状态估计.最后总结和展望了CPS网络安全面临的挑战和未来的研究方向.

Overview of Network Security of Cyber-Physical Systems

A cyber-physical system (CPS) is an intelligent system that integrates computing, communication, and control to achieve network and physical deep collaboration and organic integration. Presently, CPSs play an increasingly important role in many areas, such as key infrastructure and government agencies. Due to physical limitations, security vulnerabilities generated by computers and networks can cause huge damages to CPS and also cause chain reactions such as economic losses and social unrest; therefore, studying the security of CPS is of great significance for ensuring the safe operation of the system. We summarize the latest developments in CPS security control and attack detection based on the research status at home and abroad. First, we summarize the typical system modeling of CPS to meet the needs of the system performance analysis. Then we introduce three typical network attacks, namely denial-of-service attacks, replay attacks, and spoofing attacks. The development of CPS attack detection based on the type of detection method is reviewed, and the system's safety control and state estimation are also discussed. Finally, we summarize and forecast the challenges and future research directions of CPS network security.