Abstract: Along with the wide application of the P2P network in various areas, it is necessary to establish the trust mechanism of the P2P network. According to the equal relationship and loose coupling characteristics among peers in a P2P network, a Dempster-Shafer evidence theory based trust model for the P2P network is proposed. The frame of trust discernment, the basic trust probability assignment and the trust interval are defined in this model, on the basis of which the trust transfer mechanism and the clustering mechanism are established. Application of this model in P2P-based manufacturing resource networks (PMRN) proves its correctness and reasonableness.

Key words: P2P network, D-S evidence theory, trust model, resource sharing