一种新的基于信誉的P2P网络信任管理模型  

A New Trust Management Model for P2P Network

作　　者：李佳伦[1] 杨达[1] 

机构地区：[1]工业和信息化部信息中心安全保障处,北京100804

出　　处：《信息安全与通信保密》2012年第4期96-98,共3页Information Security and Communications Privacy

摘　　要：文中提出了一种非中心的P2P网络信任管理模型NewTrust。在P2P网络中,需要根据一个节点在网络中的信誉来判断其是否可信,通过在信任向量中引入评价方差,有效抑制了不稳定节点和策略类恶意节点;通过区分陌生节点和不可信节点,解决了陌生节点的融入问题;通过对不同信誉的节点提供不同质量的服务,解决了节点激励问题;通过引入分布式哈希表(DHT)资源发现模式解决推荐信息的管理问题,降低了搜索与管理推荐信息的代价,并使系统具有良好的可扩展性。模型能够有效地抵御多种恶意攻击。P2P network is an open, anonymous and highly dynamic system. This paper presents a novel decentralized trust management model NewTrust for P2P network, and also gives a detailed operation description of this model. First, the score variance is used as a element of trust vector to reflect the stability of a servent; then through distinguishing the Unknows from UNewTrusts, the addition problem of Unknows is solved; then the classification of service condition is used to construct an incentive mechanism, while DHT is used to reduce bandwidth cost and get nice salability; and finally NewTrust model is implemented and could thus resist various malicious attacks.

关 键 词：信任管理 P2P网络 信誉 推荐 DHT 

分 类 号：TP393.08[自动化与计算机技术—计算机应用技术]