关键词: 对等网, 信任, 可信度, 局部信任度

Abstract:

A novel trust model for p2p networks based on recommendation is proposed in this paper, which employs the credibility to weigh the refers from different recommenders, as well mathematic analysis for credibility and some measures taken to defense against several malicious attacks are presented. Considering all kinds of malicious peers and peers’ dynamic behaviors in P2P environments, the computation of the trust value for a peer consists of two parts: reputation value and penalty value. Subsequent experimental results show that, compared to the current some trust models, the proposed model is more robust on trust security problems and more advanced in successful transaction rate.

Key words: Peer-to-Peer, trust, credibility, local trust value