基于信任向量的P2P信任机制  

A Trust Mechanism Based on the Trust Vector in the P2P Environment

作　　者：王海艳[1] 胡玲[1] 王汝传[1] 

机构地区：[1]南京邮电大学计算机学院,江苏南京210003

出　　处：《计算机工程与科学》2010年第5期6-9,共4页Computer Engineering & Science

基　　金：江苏省自然科学基金资助项目(BK2008451);国家863计划资助项目(2007AA01Z404;2007AA01Z478)

摘　　要：针对现有P2P信任机制不能有效地检测和惩罚短期内反复建立信任然后进行恶意攻击的摇摆节点,本文提出了基于信任向量和时间窗口的信任机制,用信任向量记录节点的交易信息,用时间窗口收集最近一段时间内交易的记录,提高了信任评估的准确性和动态性。仿真实验表明,与已有的信任机制相比,该机制能够有效处理动态恶意节点行为。To address the problem of the cheating behaviors of those malicious peers in the P2P environment aiming to conduct attacks on a high trust value through a short period honest behavior, a trust vector based trust mechanism is pro- posed in this paper. The accuracy of trust evaluation is increased by the trust vector and the time window. Simulation results demonstrate that the new mechanism can effectively solve the cheating behaviors of those malicious peers compared with some available trust mechanisms.

关 键 词：P2P 信任机制 信任向量 时间窗口 

分 类 号：TP393.08[自动化与计算机技术—计算机应用技术]