Secure Communication for Cluster Based Wireless Sensor Network

Secure communication is a critical issue in wireless sensor network (WSN). Sensor networks are comprised of a huge number of battery operated general purpose sensor nodes with a small number gateway nodes or base stations. Gateways are more authoritative than ordinary sensor nodes. In this paper, an intensive hashing and symmetric key cryptography based approach is proposed to secure data communication in WSN to achieve preservation of data integrity and confidentiality. Results indicate that using this approach there is very small energy consumption in cluster based WSN.