Mixed key management scheme based on domain for wireless sensor network
WANG Binbin1,ZHANG Yanyan1,ZHANG Xuelin2
1. Institute of Computer Science and Engineering, Henan University of Urban Construction, Pingdingshan Henan 467036, China;
2. College of Computer, Chongqing University, Chongqing 400030, China
Abstract��Concerning the existing problems in the current key management strategies, lower connectivity, higher storage consumption and communication cost, this paper proposed a mixed key management scheme based on domain for Wireless Sensor Network (WSN). The scheme divided the deployment area into a number of square areas, which consisted of member nodes and head nodes. According to their pre-distribution key space information, any pair of nodes in the same area could find a session key, but the nodes in different areas could only communicate with each other through head nodes. The eigenvalues and eigenvectors of the multiple asymmetric quadratic form polynomials were computed, and then the orthogonal diagonalization information was got, by which the head nodes could achieve identification and generate the session key between its neighbor nodes. The analysis of performance shows that compared with the existing key management schemes, this scheme has full connectivity and a bigger improvement in terms of communication overhead, storage consumption and safety.
2014, Vol. 34 
