Trust Management in Mobile Ad Hoc Networks Using a Scalable Maturity-Based Model
In this paper, the authors propose a human-based model which builds a trust relationship between nodes in an ad hoc network. The trust is based on previous individual experiences and on the recommendations of others. They present the Recommendation Exchange Protocol (REP) which allows nodes to exchange recommendations about their neighbors. Their proposal does not require disseminating the trust information over the entire network. Instead, nodes only need to keep and exchange trust information about nodes within the radio range. Without the need for a global trust knowledge, their proposal scales well for large networks while still reducing the number of exchanged messages and therefore the energy consumption. In addition, they mitigate the effect of colluding attacks composed of liars in the network.