Abstract:

       The main negatives of a ZigBee wireless sensor network are limited computing ability, storage capacity and self resources. Network security is one of the main restrictions to its rapid development. It is therefore quite significant to guarantee its security. Key management is the basis for such security. This paper statistically analyzes the relationship between network size and the number of polygon vertices with the relationship among vertices, sides and diagonals of a polygon and then presents a novel key management scheme. This scheme has higher security but lower storage and computing capability requirements, so it reduces the requirement for network resources and can guide further research on network security.

Key words: ZigBee wireless sensor networks, encryption algorithm, key management