An Efficient Session Key Management Scheme for Cluster Based Wireless Sensor Networks

Wireless Sensor Networks (WSNs) comprise of constrained measure of assets, have unlimited applications like battlefield observation, target tracking, environment observing and so forth. As sensor nodes are deployed in hostile or remote environment and unattended by human, they are prone to different kind of attacks. So to make message transmission more secure and reliable adaptation of dynamic key is very important for secure key management. Because of the limitations of WSNs like limited memory, battery life and processing power, use of cluster-based wireless sensor network reduces system delay and vitality utilization. For the same cluster based protocol for sensor networks, achieves energy efficient and scalable routing. Whereas storage issue in sensor network, can be reduced by using dynamic key management scheme. In this context, An Efficient Session Key Management Scheme for Cluster Based Mobile Sensor network (ESKM) is the scheme which provides an improved session key by updating periodically within cluster, hence avoids the different type of attack from malicious nodes. Still it has some issues like it is not scalable and CHs are static in each round. So we can improve the ESKM by dynamically electing CH for each round and reduce the energy consumption by transmitting messages via CH. Thus we can improve the ESKM and make it using Efficient in terms of energy consumption.