Research on anti-attack performance of a private cloud safety computer based on the Markov-Percopy dynamic heterogeneous redundancy structure  

作　　者：Jiakun Wen Zhen Liu Huan Ding 

机构地区：[1]CRSC Research&Design Institute Group Co.Ltd,Beijing 100070,China

出　　处：《Transportation Safety and Environment》2023年第4期107-116,共10页交通安全与环境（英文）

基　　金：supported by the National Natural Science Foundation of China(Grant No.U1934219);the National Science Fund for Excellent Young Scholars(Grant No.52022010).

摘　　要：With the increasing computing demand of train operation control systems,the application of cloud computing technology on safety computer platforms of train control system has become a research hotspot in recent years.How to improve the safety and availability of private cloud safety computers is the key problem when applying cloud computing to train operation control systems.Because the cloud computing platform is in an open network environment,it can face many security loopholes and malicious network at-tacks.Therefore,it is necessary to change the existing safety computer platform structure to improve the attack resistance of the private cloud safety computer platform,thereby enhancing its safety and reliability.Firstly,a private cloud safety computer platform architecture based on dynamic heterogeneous redundant(DHR)structure is proposed,and a dynamic migration mechanism for heterogeneous executives is designed.Then,a generalized stochastic Petri net(GSPN)model of a private cloud safety computer platform based on DHR is established,and its steady-state probability is solved by using its isomorphism with the continuous-time Markov model(CTMC)to analyse the impact of different system structures and executive migration mechanisms on the system's anti-attack performance.Finally,through experimental verifcation,the system structure proposed in this paper can improve the anti-attack capability of the private cloud safety computer platform,thereby improving its safety and reliability.

关 键 词：Safety computer logical monitoring method continuous time Markov modelling cloud computing anti-attack analysis 

分 类 号：U284.48[交通运输工程—交通信息工程及控制]