Deciding strategy properties of contract-signing protocols

  • Authors:
  • Detlef Kähler;Ralf Küsters;Thomas Wilke

  • Affiliations:
  • Christian-Albrechts-Universität zu Kiel, Kiel, Germany;Universität Trier;Christian-Albrechts-Universität zu Kiel, Kiel, Germany

  • Venue:
  • ACM Transactions on Computational Logic (TOCL)
  • Year:
  • 2010

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Abstract

Research on the automatic analysis of cryptographic protocols has so far concentrated on reachability properties, such as secrecy and authentication. In this article, we prove that certain game-theoretic security properties, including balance for contract-signing protocols, can be decided in a Dolev-Yao style model with a bounded number of sessions. The decision algorithm that we develop is based on standard constraint-solving procedures, which, in the past, have successfully been employed in tools for reachability properties. Our result thus paves the way for extending these tools to deal with game-theoretic security properties.