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Computationally sound implementations of equational theories against passive adversaries
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Abstract: | In this paper we study the link between formal and cryptographic models for security protocols in the presence of a passive adversary. In contrast to other works, we do not consider a fixed set of primitives but aim at results for an arbitrary equational theory. We define a framework for comparing a cryptographic implementation and its idealization w.r.t. various security notions. In particular, we concentrate on the computational soundness of static equivalence, a standard tool in cryptographic pi calculi. We present a soundness criterion, which for many theories is not only sufficient but also necessary. Finally, we establish new soundness results for the Exclusive Or, as well as a theory of ciphers and lists. |
BibTeX
@misc{eprint-2005-12411, title={Computationally sound implementations of equational theories against passive adversaries}, booktitle={IACR Eprint archive}, keywords={foundations / cryptographic protocols, computational soundness of formal methods, static equivalence, equational theories}, url={http://eprint.iacr.org/2005/074}, note={ baudet@lsv.ens-cachan.fr 12846 received 4 Mar 2005}, author={Mathieu Baudet and Veronique Cortier and Steve Kremer}, year=2005 }