Group trust model in P2P network
一种基于组群的P2P网络信任模型*

Trust is a problem of particular importance in peer-to-peer network. However, the feature of peer-to-peer network such as user anonymity, open nature makes that peers are not responsible for their irresponsible bartering history. This paper proposed a trust model named BGTrust, BGTrust in unstructured P2P network was proposed, it discriminates the trust relationship s between entities in the same autonomous group and in different group and handles the two different trust relationships with different approaches, combination of the global trust and local trust advantages ,so simple computation, low network load. Mathematic analyses and simulations results show that the proposed algorithm outperform the the current trustmodels in reliability on interacting trust degree evaluation and the inhibition to the malicious peers.