A Rational Approach to Cryptographic Protocols

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 crypto...

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Bibliographic Details
Published in:arXiv.org 2010-05
Main Authors: Caballero-Gil, P, Hernández-Goya, C, Bruno-Castañeda, C
Format: Article
Language:English
Subjects:
Cryptography
Equilibrium conditions
Game theory
Public Key Infrastructure
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Summary: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.
ISSN:2331-8422
DOI:10.48550/arxiv.1005.0082