Abstract: With the development of peer-to-peer network ,how to build trust relationship between peers in peer-to-peer network has been an important problem in p2p technology. In this paper, it analyses some existing trust models and points out their problems, then presents a peer-to-peer recommendation trust model based on reputation, provides formulae for computing trust value, and designs a trust query protocol , lastly validates and analyses the feasibility and security of the model by experiments.

Key words: peer-to-peer, trust , recommendation , trust model

摘要： 随着对等网络p2p技术的不断发展，如何在p2p各个对等点之间建立起信任关系，已成为当今p2p技术研究的一个重要课题。本文在研究一些现有信任模型的基础上，分析其存在的问题，提出一种基于信誉的对等网信任模型，给出了信任度计算的算法，并设计了一种信任查询协议，最后，通过实验验证和分析了模型的可行性和安全性

关键词: peer-to-peer, 信任, 推荐, 信任模型