身份加密和双簇头结构的密钥管理方案.docVIP

  身份加密和双簇头结构的密钥管理方案 刘毅1，丁金扣1，温巧燕2** （1. 北京邮电大学理学院，北京 100876； 5 10 2. 北京邮电大学网络与交换技术国家重点实验室，北京 100876） 摘要：为了改善当前无线传感器网络存在的相应问题，减少节点密钥的存储、通信开销，在 传统分簇结构的基础上，采用了椭圆曲线和 Hash 函数相结合的加密方法，提出了一种基于 身份加密和双簇头结构的密钥管理方案。主簇头只负责汇聚和传输簇内节点采集的数据信 息，而副簇头承担了节点的管理工作。本方案支持簇内节点的动态变化，有效地防止因簇头 失效导致簇内节点无法正常工作的情况。性能分析表明，本方案比现有方案在保证节点高连 通率的基础上，节点具有较强的抗捕获性，较低的存储消耗和通信开销，网络具有可扩展性。 关键词：无线传感器网络；密钥管理；身份加密；双簇头；椭圆曲线加密 中图分类号：TP393 15 Key management scheme based on identity encryption and dual cluster heads structure for WSN LIU Yi1, DING Jinkou1, Wen Qiaoyan2 (1. School of Science, Beijing University of Posts and Telecommunications, Beijing 100876; 20 25 30 35 40 2. State Key Laboratory of Networking and Switching Technology, Beijing University of Posts and Telecommunications, Beijing, 100876) Abstract: For improving the current corresponding problems in wireless sensor networks, reducing the node key storage and communication overhead, a key management scheme based on identity encryption and dual cluster heads structure has been proposed. On the basis of the traditional clustering structure, this scheme uses a kind of encryption method which combines the elliptic curve cryptography and Hash functions. The main cluster heads are only responsible for gathering and transmitting the collected data information from the cluster nodes, and assistant cluster heads take the management of the nodes. This scheme supports the dynamic changes in the cluster nodes, and can effectively prevent the cluster head’s failure which could result in a node in the cluster cant work normally. Performance analysis shows that this scheme has inherited the high connectivity rates of the existing schemes. In addition, nodes have strong anti-capture ability, low storage consumption and low communication overhead, and the network has obviously extended properties. Key words: wireless sensor networks; key management; identitiy-based encryption; dual cluster heads; elliptic curve cryptography 0 引言 无线传感器网络(Wireless Sensor Networks