Location based Hierarchical Key Management System for Secure Group Communications in MANET based on number of Receivers
T. R. Saravanan, P. Sakthivel · 2013
In Mobile Ad Hoc Network (MANET), the secure communication basically depends on key management system. Though several cluster based keying mechanisms exists, the cluster head election is remains tricky. Hence in this paper, we propose a location based hierarchical key management system for secure group communication in MANET. Initially, group heads are selected based on stability index and they splits the nodes into clusters based on their location information. In each cluster, the cluster member with maximum stability index is chosen as cluster head. The procedure of data delivery is to encrypt the packet first by private key, and then encrypt and decrypt it again by cluster key and group key. When the new node wants to join or leave the network, re-keying of cluster and group key is performed. By simulation results, we show that proposed technique improves the network security and minimizes the cost.