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

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

2006-08-25

arxiv.org/abs/cs/0608102v1

Computer Science

Performance

17 pages, 6 figures

Scientific paper

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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