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Secure Bisimulation for Interactive Systems

  • Guanjun LiuEmail author
  • Changjun Jiang
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 9530)

Abstract

In real applications, many systems have the same functions but their securities are different due to different security policies. We find that different security policies can affect the interacting behavior of a system, which exactly is the reason why a good policy can strengthen the security. In other words, two interactive systems with different security policies are not of an equivalent behavior although their functions are identical. However, the classic (weak) bisimulation theory draws an opposite conclusion that their behaviors are equivalent. The notion of (weak) bisimulation is not suitable for these security-oriented interactive systems since it does not consider a security policy while the security policy can affect their interacting behaviors. This paper proposes the concept of secure bisimulation in order to solve the above problem. Based on secure bisimulation, we furthermore define a binary relation \(\ge _{SL}\) to compare the levels of different security policies. We prove that \(\ge _{SL}\) is a partial order but not a total one.

Keywords

Interactive systems Labelled petri nets Labelled transition systems Bisimulation Security 

Notes

Acknowledgement

The authors would like to thank the three reviewers for their helpful comments. This paper is supported in part by the Alexander von Humboldt Foundation and in part by the National Natural Science Foundation of China (Grant Nos. 61202016, 61572360, and 91218301).

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Copyright information

© Springer International Publishing Switzerland 2015

Authors and Affiliations

  1. 1.Department of Computer ScienceTongji UniversityShanghaiChina
  2. 2.Key Lab of the Ministry of Education for Embedded Systems and Services ComputingTongji UniversityShanghaiChina

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