Abstract:

In order to improve the security level of wireless sensor network, by analyzing the typical key management scheme and combing with specific applications, a CKMS (Cluster\|based Key Management Scheme) for wireless sensor networks is presented. It includes five types of keys and key update mechanism,and supporting network expansion. Comparing with the existing key management schemes, this scheme has better connectivity, less communication overhead and computational overhead, using less storage.

Key words: wireless sensor network(WSN), key management, cluster, network security