关键词: P2P 可信度 名誉度 恶意节点

Abstract:

In this paper, we propose an improved trust model based on the analysis of the Bayesian network-based trust model. It can reduce the redundancy packag es received by the peers and enhance the system reliability through improving the resource search algorithm. Meanwhile we improve the trust computing an  d updating method, which applies logarithm to the evaluation and counting of services to compute the trust. And it prevents malicious peers to attack th  e normal peers and trust peers efficiently. Meanwhile it restrains the malicious peers from increasing their trust respectively by their group collabora  tion. The sketch maps of the trust value illustrate that the new model controls the behavior of malicious peers in P2P more efficiently.

Key words: P2P, trust, reputation, malicious peer