计算机应用

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一种半全局化的P2P信誉度模型

张杰 赵政 熊晓   

  1. 天津大学 天津大学 天津大学
  • 收稿日期:2007-04-10 修回日期:2007-06-07 发布日期:2007-10-01 出版日期:2007-10-01
  • 通讯作者: 张杰

Semi-global trust model design for Peer-to-Peer networks

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  • Received:2007-04-10 Revised:2007-06-07 Online:2007-10-01 Published:2007-10-01
  • Contact: Jie ZHANG

摘要: 提出了一种新颖的信誉管理机制,首先给出了一套客观的信誉跟踪评价标准,然后根据各个节点的能力与行为表现将它们划分成两类:信誉值和能力均很出众的精英节点,一般的或新加入系统的普通节点。精英节点享有一定特权并组成结构化的网络,普通节点组成无结构的网络。接着用一种半全局化的方法来计算和存储各节点的信誉值。最后,通过实验证明此机制的有效性和健壮性。

关键词: 对等网, 信任模型, 信誉度, 网络安全

Abstract: The novel trust model for P2P file sharing systems wasintroduced. First, an objective criterion to compute each peers reputation was gaven. Second, based on their values we divided all the peers into 2 parts: one is super peers who share more resources and service and also been given some privileges; the other is normal peers who act normal or new comers, they construct an unstructured network. Third, a semi-global structure for computing and storing the trust value was described. Finally, the experiments show that the feasibility and robustness of this reputation management system.

Key words: Peer-to-Peer, trust model, reputation, network security