Zhang Ying, Liang Jixing, Zheng Bingxin, Jiang Shengming, Chen Wei
College of Information Engineering, Shanghai Maritime University, Shanghai 201306, China.
Department of Computer Science, Tennessee State University, Nashville, TN 37209, USA.
Sensors (Basel). 2016 Jan 29;16(2):170. doi: 10.3390/s16020170.
In many wireless sensor network application scenarios the key management scheme with a Mobile Sink (MS) should be fully investigated. This paper proposes a key management scheme based on dynamic clustering and optimal-routing choice of MS. The concept of Traveling Salesman Problem with Neighbor areas (TSPN) in dynamic clustering for data exchange is proposed, and the selection probability is used in MS route planning. The proposed scheme extends static key management to dynamic key management by considering the dynamic clustering and mobility of MSs, which can effectively balance the total energy consumption during the activities. Considering the different resources available to the member nodes and sink node, the session key between cluster head and MS is established by modified an ECC encryption with Diffie-Hellman key exchange (ECDH) algorithm and the session key between member node and cluster head is built with a binary symmetric polynomial. By analyzing the security of data storage, data transfer and the mechanism of dynamic key management, the proposed scheme has more advantages to help improve the resilience of the key management system of the network on the premise of satisfying higher connectivity and storage efficiency.
在许多无线传感器网络应用场景中，应充分研究带移动汇聚节点（MS）的密钥管理方案。本文提出了一种基于动态聚类和MS最优路由选择的密钥管理方案。提出了动态聚类中用于数据交换的带邻域的旅行商问题（TSPN）概念，并将选择概率用于MS路由规划。该方案通过考虑MS的动态聚类和移动性，将静态密钥管理扩展为动态密钥管理，能够有效平衡活动期间的总能耗。考虑到成员节点和汇聚节点可用资源的不同，通过修改带有迪菲-赫尔曼密钥交换（ECDH）算法的椭圆曲线密码（ECC）加密来建立簇头与MS之间的会话密钥，并用二元对称多项式构建成员节点与簇头之间的会话密钥。通过分析数据存储安全性、数据传输以及动态密钥管理机制，该方案在满足更高连通性和存储效率的前提下，具有更多优势，有助于提高网络密钥管理系统的弹性。
