P2P系统中基于服务反馈机制的信任模型研究  

Study of trust model in P2P system based on service feedback mechanism

作　　者：薛开平[1] 洪佩琳[1] 李津生[1] 黄冠尧[1] 

机构地区：[1]中国科学技术大学信息网络实验室,安徽合肥230027

出　　处：《电路与系统学报》2007年第5期96-102,共7页Journal of Circuits and Systems

基　　金：国家自然科学基金重大研究计划"下一代网络体系结构;协议模型与机制"(90104011);国家下一代互联网(CNGI)示范工程项目"基于IPv6的P2P弹性重叠网络智能节点的研制"(CNGI-04-12-1D)

摘　　要：随着P2P(Peer to Peer,对等网络)的大规模使用,相互信任问题成为P2P进一步研究的一个重要方面。本文结合公平性思想,提出了在P2P系统上建立基于服务反馈机制的分布式信任模型,该模型保证提供可靠服务的节点具有高的信任度,相应地,这些高信任度的节点也更容易在系统中获得可靠的服务。文章最后通过仿真验证了模型的有效性。相对于已有的模型,该模型具有较小的计算量,在维护上具有安全性、不可篡改,从而有效制止了自吹、勾结和诽谤等问题。As P2P （Peer to Peer） system is using on a large scale, the problem of mutual trust has become an important aspect for further research. With the combination of fairness thought, this paper presents a distributed trust model in P2P system based on service feedback mechanism. This model ensures that the nodes which provide reliable service have high trust value. Accordingly, these high value nodes are much easier to obtain reliable service in the system. At last this paper validates the effectiveness of such model through simulation. In comparison with existing models, this model requires less calculation and is secure and unfalsifiable in maintenance, therefore it can effectively prevent such problems as boast, collusion and slander.

关 键 词：对等网络 信任 公平性 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]