P2P网络信任数据存储机制综述

Survey of Trust Data Storage Mechanism in Peer-to-Peer Network

P2P网络以其在动态、自组织、伸缩性、鲁棒性、资源利用率等方面的优势,已经发展成为当前互联网络的重要分支并获得广泛应用。但由于P2P支持用户匿名访问,其中包含大量恶意节点,因而存在安全隐患,故须依赖信任机制保证对等节点间的协作,其中信任数据存储成为一个关键问题。首先介绍P2P信任模型的基本构成,进而对目前P2P信任模型中常用的信任数据存储技术作了深入研究,同时通过分析对比总结各自的优缺点,最后提出理想的信任数据存储方案应具备的特征。

Because of many good features, such as dynamic, auto organized, scalability, robust and resource utility, peer-to-peer （P2P） network becomes to an important branch of Internet and has been widely applied. But because P2P network permits anonymous access including many malicious peers, which bring many security problems to P2P network, cooperation between peer and peer must be supported by trust relation established between peer and peer. This paper focused on the issue of trust data storage. Firstly the components of general trust model were introduced. Next several typical trust data storage models of P2P were discussed. After careful analyzed, these models display their advantages and disadvantages. Finally this paper puts forward the essential features of the ideal trust data storage model.