Welcome to the resource topic for 2003/114
Title:
Unifying Simulatability Definitions in Cryptographic Systems under Different Timing Assumptions
Authors: Michael Backes
Abstract:The cryptographic concept of simulatability has become a salient
technique for faithfully analyzing and proving security properties of
arbitrary cryptographic protocols. We investigate the relationship
between simulatability in synchronous and asynchronous frameworks by
means of the formal models of Pfitzmann et. al., which are seminal in
using this concept in order to bridge the gap between the
formal-methods and the cryptographic community. We show that the
synchronous model can be seen as a special case of the asynchronous
one with respect to simulatability, i.e., we present an embedding
between both models that we show to preserve simulatability. We show
that this result allows for carrying over lemmas and theorems that
rely on simulatability from the asynchronous model to its synchronous
counterpart without any additional work. Hence future work can
concentrate on the more general asynchronous case, without having to
neglect the analysis of synchronous protocols.
ePrint: https://eprint.iacr.org/2003/114
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