无线传感器网络中的信任管理

作为对基于密码体系的安全手段的重要补充,信任管理在解决WSNSs(wireless sensor networks)中的内部攻击,识别恶意节点、自私节点及低竞争力节点,提高系统安全性、可靠性和公平性等方面有着显著优势.综述了WSNs环境下信任管理的特点、分类方法、框架设计、脆弱性分析、攻击模型及对策,在此基础上介绍了WSNs下的典型信任管理系统.以信任计算模型为中心的WSNs环境下信任管理框架的设计是信任管理系统的核心,从信任要素、信任计算模型和信任值的应用这3个方面对其进行了深入讨论.最后,总结了WSNs环境下信任管理的研究现状,提出了值得参考的研究发展方向.

Trust Management in Wireless Sensor Networks

Cryptography based security solutions are not enough for WSNs when there are attacks from interior, which are caused by compromised nodes.Trust management can deal with this problem efficiently,and enhance the security,reliability and impartiality of the system.This paper gives a detailed introduction to the characteristics,the taxonomy,and the design of the framework,the vulnerability analysis,the attack models and the countermeasures. Among which the design of the framework,including the trust factors,the computation models and the application of trust,is the core of a trust management system and is given a deep insight into.In the end,several typical trust management systems are introduced.A panoramic view and detailed analysis of current trust based systems in WSNs are given.