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Publication Detail
Quantitative Analysis of Leakage of Confidential Information
  • Publication Type:
    Other
  • Authors:
    Clark D, Hunt S, Malacaria P
  • Publication date:
    10/2003
  • Status:
    Unpublished
  • Notes:
    Presented at Dagstuhl Seminar 03411: Language Based Security pdf: http://www.soi.city.ac.uk/ seb/papers/dagstuhl03.pdf
Abstract
Programs whose high-inputs have no effect on their low-outputs are said to satisfy the non-interference condition. We address the question of what more can be said about programs which do not satisfy non-interference. We show how Shannon’s information theory can be used to define a measure of how much information a program transmits from its high-inputs to its outputs. We describe a quantitative analysis for a While language; the analysis calculates bounds on the leakage into each variable under worst-case assumptions of the choice of low-inputs.
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