P2P网络环境下的基于Vague集的抗攻击信任模型  

Attack-resisted Trust Model Based on Vague Set in P2P Networks Environments

作　　者：陈旭日[1] 徐炜民[1] 沈文枫[1] 袁世忠[1] 

机构地区：[1]上海大学计算机工程与科学学院,上海200072

出　　处：《计算机科学》2008年第7期81-83,87,共4页Computer Science

基　　金：湖南省自然科学基金资助项目(05JJ40101);湖南省教育厅项目(05C740)

摘　　要：由于P2P网络的信任机制经常受到恶意节点的欺骗和攻击,提出一种基于Vague集的抗攻击信任模型,用隶属度度量具有不确定信息的信任度,引入时间敏感系数和惩罚系数,处理资源提供者的直接反馈信息,用Vague集相似度量评价推荐节点的回馈信息,并给出该信任模型的实现方案和仿真实验。实验结果表明该信任模型能够抵御各类欺骗和攻击行为。Since trust protocols in P2P networks are subject to spite node cheats and attacks,a vague set-based attackresisted trust model is proposed, which uses degree of membership to measure trust degree of uncertainty information, employs time sensitivity coefficient and punish coefficient to deal with direct feedback information of resource provider, introducs similarity of vague set to evaluate return-information in recommended nodes and present practice schemes and emulational experiments of trust model. And the results of experiments show that the trust model can resist various of cheat and attack action.

关 键 词：信任模型 VAGUE集 不确定性 相似度 

分 类 号：TP18[自动化与计算机技术—控制理论与控制工程] TP393[自动化与计算机技术—控制科学与工程]