时空相关性的P2P网络信任模型  

Time-Space Based Trust Model for P2P Systems

作　　者：王勇[1] 黄科瑞[1] 秦志光[1] 吴波[1] 

机构地区：[1]电子科技大学计算机科学与工程学院,成都610054

出　　处：《电子科技大学学报》2011年第1期80-84,共5页Journal of University of Electronic Science and Technology of China

基　　金：国家863计划(2009AA01Z422)

摘　　要：结合时间和空间特性,提出一个新的动态信任模型,该模型包含近期信任、长期信任、滥用信任和反馈信任等4个基本组件;针对P2P网络中节点动态性的问题,提出用社区信任度来表示物理位置相关的群体信任程度。模拟实验结果显示,该模型具有较好的动态适应能力和反馈信息聚合能力,能够有效地防止合谋、诋毁等恶意攻击行为。In this paper,we present a new time-space based trust model which integrates time and space factors,where short-term-trust,long-term-trust,abuse-trust and feedback-trust are the main consideration.Furthermore,the community-trust is proposed to solve the difficulty of binding between user and physical IP address.The community-trust indicates the integrative trust level of users＇ physical locations set in a specific range.Theoretical analysis and simulation results show that the time-space based trust model is effective on modeling dynamic trust relationship,aggregating feedback information,and resisting some attacks such as slander,peer collusion,and Sybil attacks.

关 键 词：P2P网络 空间相关性 时间相关性 信任模型 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]