基于部署信息的无线传感器网络密钥预分配  

Key pre-distribution scheme for wireless sensor networks using deployed knowledge

作　　者：余旺科[1,2] 马文平[1] 王淑华[2] 

机构地区：[1]西安电子科技大学计算机网络和信息安全教育部重点实验室,陕西西安710071 [2]绍兴文理学院数学系,浙江绍兴312000

出　　处：《华中科技大学学报（自然科学版）》2010年第11期51-54,共4页Journal of Huazhong University of Science and Technology(Natural Science Edition)

基　　金：国家高技术研究发展计划资助项目(2007AA01Z472);国家自然科学基金资助项目(60773002);高等学校学科创新引智计划资助项目(B08038)

摘　　要：针对无线传感器网络的频繁移动性,提出了一种有效的随机密钥预分配方案.该方案采用正方形对网络进行分区,在覆盖全网的同时有效地减少了重叠区域.节点仅需预分配数量较少的密钥,就能够以很高的概率建立共享密钥,即使存在大量的移动节点仍能保持较高的连通概率.理论分析与仿真数据表明该方案不但在连通性和安全性方面具有较好的性能,而且节点存储的密钥数量最多可节约60%以上.Considering frequent mobility of wireless sensor networks, an efficient random key pre-distribution scheme was proposed. In the scheme, the network was divided in square grid, and then the good coverage efficiency can be obtained. Nodes only need to preload a few of secret keys, and then can establish shear keys with a very high probability. Wireless sensor networks can maintain a good connectivity even though there are a lot of mobile nodes. Theoretic studies and figures of simulation show that the proposed scheme provides better performance in connectivity and security, obtains up to 60% reduction in the number keys.

关 键 词：无线传感器网络 密钥预分配 部署信息 连通性 安全 

分 类 号：TP393.08[自动化与计算机技术—计算机应用技术]