一种对等网文件共享系统下的全局信任模型  

Global Trust Model for Peer-to-Peer File Sharing System

作　　者：王新生[1] 王伟杰[1] 陈敬男[1] 温学谦[1] 

机构地区：[1]燕山大学信息科学与工程学院,河北秦皇岛066004

出　　处：《小型微型计算机系统》2010年第11期2201-2206,共6页Journal of Chinese Computer Systems

基　　金：国家自然科学基金项目(60673136)资助

摘　　要：对等网文件共享系统高度的开放性和自治性导致节点在交互的过程中易受诸如欺骗,协同作弊等安全威胁.针对节点在交互过程可能出现的安全问题提出一个基于贴近度加权推荐的全局信任模型MGTrust,根据推荐者自身对其他节点评价贴近程度分配权值,以此评价节点的可信度,给出信任模型的分布式实现,最后对模型实验分析,结果表明MGTrust模型与传统模型相比在迭代速度及成功下载率等指标上有明显改善.The high degree of openness and autonomy of the p2p file sharing system gives rise to chord security warning of things such as fraud and cooperative cheating in the process of information exchange. The aim of this study is to develop a model to solve the problems, which may arise in peers＇ communications, and implement it in distributed environment. The model evaluates the reliability based on the evaluation neartude between presenters, and analyses the model on a practical basis. The model shows improvements compared to traditional models by greatly improving iteration speed and successful downloading rates.

关 键 词：对等网 信任 贴近度 雅克比超松弛 DHTs CAN 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]