基于概率干扰的概率隐蔽通道仿真研究  

Simulation analysis of probabilistic covert channels based on probabilistic interference

作　　者：郭云川[1,2] 周渊[3] 丁丽[3] 郭莉[1] 

机构地区：[1]中国科学院计算技术研究所,北京100019 [2]中国科学院研究生院,北京100049 [3]国家计算机网络应急技术处理协调中心,北京100029

出　　处：《通信学报》2009年第2期59-64,共6页Journal on Communications

基　　金：国家重点基础研究发展计划(“973”计划)基金资助项目(2007CB311100);国家高技术研究发展计划(“863”计划)基金资助项目(2007AA01Z446);国家自然科学基金资助项目(60873217)~~

摘　　要：讨论了影响概率隐蔽通道带宽和传输错误率的因素,对不满足BSPNI(bi-simulation strong probabilistic non-interference)、PBNDC(probabilistic non-deducibility on composition)和SPBNDC(strong probabilistic BNDC)性质的系统概率隐蔽通道进行了仿真,仿真结果表明,概率隐蔽通道的带宽与硬/软件配置、概率调度因子和调度次数有密切关系,当硬/软件配置和概率调度因子固定时,概率隐蔽通道的带宽近似地反比于调度次数;传输错误率与概率调度因子和调度次数关系密切,调度次数越大,传输错误率越小。Bandwidth and transmission error rate has received much attention in fields of covert channels. If a system does not satisfy BSPNI,PBNDC or SPBNDC property, then probabilistic covert channels will be formed. A simulation system was built to analyze their bandwidth and transmission error rate about covert channels. For every results of simulation, detail theoretical explanations were given. The results show the bandwidth is closely related to software/hardware confgurafion, probability parameter and scheduling times, when confgurafions and probability parameter are fixed, the bandwidth is inversely proportional to scheduling times. For the same process, the greater is scheduling limes, the smaller is transmission error rate.

关 键 词：概率隐蔽通道 概率干扰 传输错误率 带宽 仿真 

分 类 号：TP309.2[自动化与计算机技术—计算机系统结构]