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arXiv · 1005.0082

A Rational Approach to Cryptographic Protocols

P. Caballero-Gil·C. Hernández-Goya·C. Bruno-Castañeda
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Abstract

This work initiates an analysis of several cryptographic protocols from a rational point of view using a game-theoretical approach, which allows us to represent not only the protocols but also possible misbehaviours of parties. Concretely, several concepts of two-person games and of two-party cryptographic protocols are here combined in order to model the latters as the formers. One of the main advantages of analysing a cryptographic protocol in the game-theory setting is the possibility of describing improved and stronger cryptographic solutions because possible adversarial behaviours may be taken into account directly. With those tools, protocols can be studied in a malicious model in order to find equilibrium conditions that make possible to protect honest parties against all possible strategies of adversaries.

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P. Caballero-Gil, C. Hernández-Goya, C. Bruno-Castañeda. 2010-05-01. A Rational Approach to Cryptographic Protocols. https://doi.org/10.1016/j.mcm.2006.12.013

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