P2P环境下的一种稳定信任模型  

A Stable Trust Model under P2P Network Environment

作　　者：曹建英[1] 

机构地区：[1]陇东学院信息工程学院,甘肃庆阳745000

出　　处：《陇东学院学报》2011年第2期28-31,共4页Journal of Longdong University

摘　　要：在P2P网络环境中,针对由于网络节点的匿名性和动态性带来的安全问题,提出了一种基于平衡调节推荐的半全局信任模型。该模型在Chord协议的基础上进行扩展,结合已有局部推荐信任模型,通过节点间协作,传递和计算出节点信任值,实现量化和评估节点的可信程度;并给出了模型的数学表述和分布式实现方法。仿真实验表明,该模型能有效评估节点的信任度,较已有模型适用于遏制更广泛类型的恶意节点攻击,网络中的成功下载率性能指标有较大提高,优于传统的信任管理模型,也为信任管理研究提供了一种新思路。According to security problems ascribed anonymity peer and dynamic nature of the network,this paper proposed a recommended semi-global trust model based on balance adjustment value in the P2P network environment.The model combined with existing local recommendation trust mode through the collaboration between peers,transmission,and calculation the trust value of peers based on Chord protocol expansion.Quantification and assessment of the credibility of the peer have achieved,given the model＇s mathematical formulation and distributed implementation method.Simulation results show that the model can assess the credibility of peers over the existing model.It is applicable to a wider type to contain malicious peer attack.The network successfully download rate has greatly improved performance.It is better than the traditional model of trust management,and also provides a new approach for trust management study.

关 键 词：P2P系统 信任模型 CHORD协议 推荐信任模型 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]