基于声誉的P2P匿名通信方案研究  

ON REPUTATION BASED P2P ANONYMOUS COMMUNICATION SCHEME

作　　者：霍成义[1] 

机构地区：[1]甘肃工业职业技术学院信息工程系,甘肃天水741025

出　　处：《计算机应用与软件》2010年第4期40-41,44,共3页Computer Applications and Software

基　　金：国家自然科学基金项目(60503008);甘肃国防科工委(办)科研项目(Gb2007-3)

摘　　要：P2P匿名通信系统需要系统成员共同参与信息转发,而部分不积极参与通信的成员的"Free-riding"行为将导致匿名系统性能降低。针对P2P匿名系统中部分成员不积极参与匿名转发信息的自私行为,基于区分服务思想提出一种基于声誉的匿名通信方案,该方案通过成员之间互相监督发送信息次数,降低了不积极参与信息转发成员的声誉值,使不同声誉值的成员获得的匿名性能不一样。理论分析和计算数据表明,应用声誉机制能确保正常成员的匿名度不变,但降低自私成员的匿名度,从而有效减少部分成员不积极参与转发匿名信息的自私行为。The performance of Peer-to-Peer anonymous communication system relies on all members participating in information forwarding,but the free-riding behaviours of part of the members who are inactive in communication will cause system performance decline. In order to solve such selfish behaviour of inactive participation of information forwarding by part of the members in P2P anonymous system,an anonymous communication scheme based on reputation is proposed in this paper with respect to the idea of differentiated service. The scheme reduces reputation value of the inactive members by monitoring the frequency of messages forwarding each other amongst the members,which makes the members in the system obtain different anonymous performance upon different reputation value. Theoretical analysis and computation data all show that applying reputation mechanism can guarantee the anonymous degree of normal members while punish the selfish members by decreasing their anonymity degree,thus effectively decreases the selfish behaviours of part of the members in free-riding.

关 键 词：P2P 匿名通信 搭便车 声誉机制 区分服务 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]