实时系统安全评估机制及其仿真研究  

Research on Security Assessment of Real-Time System by Simulation

作　　者：赵国冬[1] 张国印[1] 冯光升[1] 姚爱红 

机构地区：[1]哈尔滨工程大学计算机科学与技术学院,黑龙江哈尔滨150001

出　　处：《计算机仿真》2012年第2期175-179,共5页Computer Simulation

摘　　要：研究了嵌入式实时系统弹性应对策略中的安全评估机制。工业控制系统中存在嵌入系统,现有嵌入式系统无法动态掌握系统运行时的安全状况并无法做出响应的问题。为了保证嵌入系统安全运行,提出了实时系统的弹性应对策略以改善系统的安全性,设计并实现了模式匹配的嵌入式实时系统安全等级评估模块,可以实现动态实时的系统安全状况评价,并为系统动态配置安全策略提供了决策支持。采用RT-Linux建立了仿真评估环境,对安全等级评估系统的性能进行了仿真测试。测试结果表明安全等级评估模块的系统开销很小,能够有效的保障嵌入式实时系统的安全运行,具有广泛的应用价值和前景。This paper studied the security assessment mechanism of strategy to system flexibility based on Embedded Real - time System. To deal with the problem that embedded system can not dynamicly get security situation and respond when system is running, strategy to system flexibility based on embedded real - time system was proposed to improve the system security. And the security assessment module based on pattern matching was designed and realized, which achieved dynamic real - time evaluation of system security and provided a decision support for the system dynamic configuration of security strategies. Simulation evaluation environment based on RT -Linux was established to test the safety performance of the security assessment system. Test results show that the overhead of security assessment module is very small, can effectively protect the safe operation of embedded real - time system, and has wide application value and prospects.

关 键 词：安全 模式匹配 嵌入式操作系统 实时系统 评估 

分 类 号：TP316.2[自动化与计算机技术—计算机软件与理论]