摘要
讨论了某信号指示预处理嵌入式软件的安全性问题。以有限状态机和马尔可夫链为理论基础,建立了该类软件的安全性模型。以灰熵定义为基础,定义了系统安全度的概念,量化系统安全性,给出了一种量化分析方法。预测了软件的安全性。最后借助数值仿真工具,讨论了估计参数对系统安全性的影响,得到了量化指标,根据仿真曲线给出了提高安全性的方法。
The safety problem of a kind of embedded software is discussed in this paper.The safety model of this kind of software is established based on the FSM and Markov chain theories.The safety degree of the system is defined according to gray entropy.It offers a way to quantify the safety of the system.It also gives a way to get the values of the equations.Finally,numerical simulation is applied to study the influence of the parameter of the equations on system safety,and shows the way to enhance the safety of the system.
出处
《计算机工程与科学》
CSCD
北大核心
2012年第4期102-107,共6页
Computer Engineering & Science
