一种揭示异质无线传感器网络恶意程序传播的动力学模型  

A Dynamics Model of Disclosing Malware Propagation in Heterogeneous WSNs

作　　者：沈士根[1] 杨淑敏 黄龙军[1] 刘建华 吴国文[2] 张红[2] 曹奇英[2] SHEN Shigen;YANG Shumin;HUANG Longjun;LIU Jianhua;WU Guowen;ZHANG Hong;CAO Qiying(Department of Computer Science and Engineering,Shaoxing University,Shaoxing Zhejiang 312000,China;College of Computer Science and Technology,Donghua University,Shanghai 201620,China)

机构地区：[1]绍兴文理学院计算机科学与工程系,浙江绍兴312000 [2]东华大学计算机科学与技术学院,上海201620

出　　处：《传感技术学报》2022年第5期683-691,共9页Chinese Journal of Sensors and Actuators

基　　金：浙江省自然科学基金项目(LZ22F020002);浙江省自然科学基金联合基金项目(LZY21F020001);国家自然科学基金项目(61772018)。

摘　　要：恶意程序传播严重威胁异质无线传感器网络(Heterogeneous WSNs, HWSNs)的数据安全和网络可靠性。为揭示HWSNs恶意程序传播的内在规律,提出一种考虑潜伏和隔离机制的新传染病模型SEQIRD(Susceptible-Exposed-Quarantined-Infected-Recovered-Dead)。使用传播动力学方程描述节点各状态之间的动态转换过程,根据微分方程稳定性定理计算SEQIRD的稳定点,基于下一代矩阵法得到SEQIRD的基本再生数,并证明SEQIRD无病稳定点的稳定性。仿真实验验证了HWSNs恶意程序消亡的条件以及关键状态转移概率参数对SEQIRD稳定性的影响,为系统管理员制定一系列安全防御策略从而抑制HWSNs恶意程序传播奠定了理论基础。Malware propagation in heterogeneous WSNs(HWSNs)has seriously threatened the data security and network reliability of HWSNs. In order to reveal the inherent law of the HWSNs malware propagation, a new epidemic model named SEQIRD(Susceptible-Exposed-Quarantined-Infected-Recovered-Dead)is proposed, which considers the mechanism of latency and quarantine. The dynamic transformation process of each state of a heterogeneous sensor node(HSN)is described by using a group of differential equations. The stable points of SEQIRD are calculated acording to the stability theorem of differential equations. The basic regeneration number of SEQIRD is obtained based on the next generation matrix method, and the stability of the malware-free equilibrium of SEQIRD is proved. Simulation experiments verify the conditions of the disappearance of HWSNs malware and the influence of key state transformation probability parameters on the stability of SEQIRD. The results obtained lay a theoretical foundation for system administrators to formulate a series of security defense strategies to suppress HWSNs malware propagation.

关 键 词：异质无线传感器网络 恶意程序 传染病模型 稳定点 基本再生数 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]