P2P网络层次化信任模型
doi: 10.3724/SP.J.1146.2005.01560
A Hierarchical Reputation Model for P2P Networks
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摘要: 大规模文件共享P2P网络中节点之间发生重复交易的可能性较小而难以建立信任关系,从而导致P2P网络容易受到恶意节点攻击。针对该问题本文提出了基于群组的P2P网络层次化信任模型。该信任模型将信任关系划分为群组之间的信任关系,群组与节点之间的信任关系和节点之间的信任关系3个层次。节点利用本地信任信息或所属群组的推荐信任确定给定节点的信任值。仿真分析表明,该信任模型能够有效识别恶意节点,使P2P网络中合作节点具有较高的成功请求率。Abstract: In large scale P2P networks, it is difficult to establish the trust relationship between peers as it is less likely that repeat interactions will occur with the same peer. So the network is vulnerable to malicious peers. A group based hierarchical reputation model for P2P networks is proposed in this paper to solve this problem. In this model, the trust relationship is classified into three tiers: the trust relationship between groups, the trust relationship between groups and peers, and the trust relationship between peers. A peer evaluates the trust of the given peer by its local trust information or the reference from the group it belonging to. The simulation and analyses show that the proposed reputation model can distinguish good peers and make them happy with the high ratio of the success query.
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