Secure protocol for wireless sensor network

Wireless sensor network is an emerging technology due to its wide range of application. This scheme proposes a new secure protocol with better security and Even-driven cluster formation brings energy efficiency by avoiding the unnecessary formation of clusters, when no event is there in the network The proposed scheme adopts a level based secure hierarchical approach to maintain the energy efficiency. It incorporates light-weight security mechanisms like, nested hash based message authentication codes (HMAC), Elliptic-Curve Diffie-Hellman (ECDH) key exchange scheme and Blowfish symmetric cipher.