传感器网络中建立路径密钥的增强方案  

Enhanced Path-key Establishment Scheme in Wireless Sensor Networks

作　　者：王秋华[1,2] 陈惠芳[1] 谢磊[1] 王匡[1] 

机构地区：[1]浙江大学信息与电子工程学系,浙江杭州310027 [2]杭州电子科技大学通信工程学院,浙江杭州310018

出　　处：《信息与控制》2011年第2期268-272,共5页Information and Control

基　　金：浙江省归国人员择优资助项目;杭州电子科技大学科学研究基金资助项目(KYF085609014)

摘　　要：针对传统密钥预分配方案中路径密钥建立路径长,通信开销大,且实施路径密钥建立阶段后,网络安全连通率增长速度不是很快等诸多问题,提出了一种建立路径密钥的增强方案.在路径密钥建立阶段,增强方案充分利用了节点通信范围内与其安全连通的邻节点中预分配的密钥,增加了用于路径密钥协商的节点的数量.对增强方案与无增强措施的原方案进行性能分析与比较,结果表明,实施增强方案后,网络安全连通率得到了明显的提高,使网络安全连通率可以很快达到1.同时,为达到预期的网络安全连通率,增强方案所需的预置密钥数目可以少得多.In the path-key establishment phase of existing pre-distribution key management schemes,there are many problems,such as long path-key establishment path,high communication overhead,and low secure network connectivity growth rate.In order to resolve these problems,an enhanced scheme for establishing the path-key is proposed.In path-key set up phase,the proposed scheme makes full use of the pre-distributed keys in the securely connected neighboring nodes within the communication range of the node,and increases the number of nodes used to negotiate the path-key.Analysis and comparison results between the enhanced scheme and the original scheme without the enhanced method show that with the enhanced scheme,secure network connectivity rate is obviously improved,and it achieves to 1 quickly.Moreover,the enhanced scheme needs much less pre-distributed keys to achieve the prospective network connectivity rate.

关 键 词：无线传感器网络 密钥管理 密钥预分配 路径密钥 

分 类 号：TP393.08[自动化与计算机技术—计算机应用技术]