基于通信历史相关性的P2P网络分布式信任模型

提出了一种新的P2P分布式信任模型NBRTrust.在节点通信历史分布式存储基础上构造了节点局部信任度评价分布式存储网-βlist,通过分布式计算节点信任评价行为的相关度,得到以节点相关度为因子的全局信任模型NBRTrust,用于评估节点的可信程度;定义了模型的数学表述和分布式计算方法,设计了基于NBRTrust信任模型的P2P通信模型.仿真分析表明,相比纯粹的局部信任模型和全局信任模型,NBRTrust信任模型更客观,能够有效抵御单个恶意节点和团队恶意节点的欺骗行为,是一种有效的信任模型.

A Distributed Trust Model for P2P Overlay Networks Based on Correlativity of Communication History

Develops a new distributed P2P trust model named NBRTrust (node behavior relation trust) for appraising the degree of confidence of nodes. The global trust model NBRTrust with the correlativities between nodes as factors was developed. A distributed network β-list was built in correlation with the communication histories of nodes to appraise locally the degree of confidence of nodes, then the behavioral correlativities between nodes were computed distributively. Defines the mathematical expression of the model and distributed computation, with the P2P communication model developed on the basis of NBRTrust model. Simulation results revealed that the NBRTrust model is more objective and effective than the simply local or global trust model, which is able to resist efficiently the fraudulent acts from a single or grouped malignant nodes.