A New Key Management and Authentication Method for WSN Based on CPK

Abstract
Nowadays research and applications of wireless sensor network have attracted peoplepsilas attention. Since sensor nodes in WSN are resource-constrained, the security solutions for WSN become difficult. In this paper, we propose to use combined public key technique in wireless sensor network. A new key management scheme, a key agreement and mutual authentication protocol based on CPK for WSN are given, which can fulfill confidential communication and mutual authentication between nodes under resource-constrained condition. Compared with other schemes, this scheme assures that wireless sensor network is more efficient, scalable and it has high key connectivity and strong resilience.

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