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Analysis of a Reputation System for Mobile Ad-Hoc Networks with Liars

Jochen Mundinger·Jean-Yves Le Boudec
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Abstract

The application of decentralized reputation systems is a promising approach to ensure cooperation and fairness, as well as to address random failures and malicious attacks in Mobile Ad-Hoc Networks. However, they are potentially vulnerable to liars. With our work, we provide a first step to analyzing robustness of a reputation system based on a deviation test. Using a mean-field approach to our stochastic process model, we show that liars have no impact unless their number exceeds a certain threshold (phase transition). We give precise formulae for the critical values and thus provide guidelines for an optimal choice of parameters.

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Jochen Mundinger, Jean-Yves Le Boudec. 2006-08-25. Analysis of a Reputation System for Mobile Ad-Hoc Networks with Liars. https://arxiv.org/abs/cs/0608102

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