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A Formal Language for Cryptographic Pseudocode

  • Michael Backes
  • Matthias Berg
  • Dominique Unruh
Part of the Lecture Notes in Computer Science book series (LNCS, volume 5330)

Abstract

Game-based cryptographic proofs are typically expressed using pseudocode, which lacks a formal semantics. This can lead to ambiguous specifications, hidden mistakes, and even wrong proofs. We propose a language for expressing proofs that is expressive enough to specify all constructs occurring in cryptographic games, including probabilistic behaviors, the usage of oracles, and polynomial-time programs. The language is a probabilistic higher-order lambda calculus with recursive types, references, and support for events, and is simple enough that researchers without a strong background in the theory of programming languages can understand it. The language has been implemented in the proof assistant Isabelle/HOL.

Keywords

Encryption Scheme Type Class Cryptographic Protocol Proof Assistant Evaluation Context 
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 2008

Authors and Affiliations

  • Michael Backes
    • 1
    • 2
  • Matthias Berg
    • 1
  • Dominique Unruh
    • 1
  1. 1.Saarland UniversitySaarbrückenGermany
  2. 2.MPI-SWSGermany

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