Secure hierarchical routing protocol (SHRP) for wireless sensor network

Abstract

Wireless Sensor Network (WSN) has emerged as an important supplement to the modern wireless communication systems due to its wide range of applications. The communication of sensitive data and working in hostile environmental condition needs security. The energy constraints, limited computational ability and low storage capacity of the sensor nodes have made the implementation of security more challenging. 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. Simulation results show that the scheme performs better than existing secure routing protocols FBSR and ATSR.