DyClust: A Hybrid Key Management Scheme for Wireless Sensor Network

Wireless sensor network (WSN) has a variety of applications, differ in size, and are used in a range of environments. Many applications that use WSN need secure communication. During the joining and leaving operations of the node, key management is essential to meet the security objectives in WSN. In multicast WSN, information transmits from one node to another in a cluster via cluster head where information security is an important issue and cryptographic algorithms play vital roles for it. This paper proposes a hybrid security algorithm Dynamic Cluster-Based Group key Management Scheme (DCGKMS) having a blend of secure algorithms RSA and CRT. The proposed DCGKMS proves to be more secure, efficient, and cost-effective on the evaluation parameters commutation, communication, and rekeying cost for dynamic clusters. DCGKMS manages to reduce the key storage at leaving and joining operations. The simulation is being done using NS2 and results are shown in comparison with LKH and OFT with higher efficiency.