A Sound Decision Procedure for the Compositionality of Secrecy

  • Martín Ochoa
  • Jan Jürjens
  • Daniel Warzecha
Part of the Lecture Notes in Computer Science book series (LNCS, volume 7159)

Abstract

The composition of processes is in general not secrecy preserving under the Dolev-Yao attacker model. In this paper, we describe an algorithmic decision procedure which determines whether the composition of secrecy preserving processes is still secrecy preserving. As a case-study we consider a variant of the TLS protocol where, even though the client and server considered separately would be viewed as preserving the secrecy of the data to be communicated, its composition to the complete protocol does not preserve that secrecy. We also show results on tool support that allows one to validate the efficiency of our algorithm for multiple compositions.

Keywords

Decision Procedure Order Logic Authentication Protocol Security Protocol Dependency Tree 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2012

Authors and Affiliations

  • Martín Ochoa
    • 1
    • 3
  • Jan Jürjens
    • 1
    • 2
  • Daniel Warzecha
    • 1
  1. 1.Software EngineeringTU DortmundGermany
  2. 2.Fraunhofer ISSTGermany
  3. 3.Siemens AGGermany

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