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CAI Zhi-yong, ZHANG Xing, SHEN Chang-xiang. Analysis and Detection of Covert Information Transfers in MLS Network[J]. Journal of Beijing University of Technology, 2011, 37(8): 1226-1230.
Citation: CAI Zhi-yong, ZHANG Xing, SHEN Chang-xiang. Analysis and Detection of Covert Information Transfers in MLS Network[J]. Journal of Beijing University of Technology, 2011, 37(8): 1226-1230.
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Analysis and Detection of Covert Information Transfers in MLS Network

  • 1. College of Computer Science, Zhejiang University, Hangzhou 310027, China;

  • 2. College of Computer Science, Beijing University of Technology, Beijing 100124, China

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  • Received Date: July 06, 2009
  • Available Online: November 18, 2022
    Graphical Abstract
    • Abstract
  • Regarding the issue of network covert channels hidden in overt sources with fixed probability distribution,two detection methods are proposed.One is an improved attribute shift test and the other is a modified Pearson chi-square test.In attribute shift test we use k warnings instead of one warning to indicate detection.In chi-square test we incorporate adjacent probability values.The two methods improve detection accuracy in different degrees.Advantages of the detection methods are verified by experiments.
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    • References (10)
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    胡文涛,薛质,陈楠.基于网络计数器的隐蔽信道[J].上海交通大学学报,2008,42(10):1678-1681.HU Wen-tao,XUE Zhi,CHEN Nan.Research of covert channels based on Web counters[J].Journal of Shanghai JiaotongUniversity,2008,42(10):1678-1681.(in Chinese)
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    SEBASTIAN Z,GRENVILLE A,PHILIP B.A survey of covert channels and counter-measures in computer network protocols[J].IEEE Communications Surveys&Tutorials,2007,9(3):44-57.
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