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

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.