入侵容忍系统动态安全性量化方法  

Quantitative approach to dynamic security of intrusion tolerant systems

作　　者：黄建华[1] 甘鸿声[1] 

机构地区：[1]华东理工大学信息科学与工程学院,上海200237

出　　处：《计算机应用》2011年第1期123-126,共4页journal of Computer Applications

摘　　要：提出一种暴露窗口的入侵容忍系统的安全性量化方法。暴露窗口可以动态反映系统的劣化过程,将该参数引入到Markov分析过程中,从而比较客观地反映出入侵容忍系统安全性的变化情况。模拟的验证结果表明,这种量化方法得到了更符合实际的量化结果,为建立一个更加安全的入侵容忍系统提供理论依据。A quantitative analysis approach to the security of intrusion tolerant systems was proposed. The exposure window of intrusion tolerant systems was introduced into quantitative analysis, and the parameter could reflect the deteriorating process of the systems. A Markov analysis process with the parameter was discussed, and the simulation results through this method greatly conformed to the practical course of the security change. The proposed method provides a theoretical basis for establishing a safer intrusion tolerant system.

关 键 词：入侵容忍 暴露窗口 半马尔可夫模型 平均安全故障时间 状态转移 

分 类 号：TP393.08[自动化与计算机技术—计算机应用技术]