Group Key Management with Efficient Batch Rekeying in Mobile Ad-Hoc Network

A mobile ad-hoc network is a self configure network with dynamic infrastructure. The mobile network is self formed and self healing network. In MANET mobile nodes are connected by means of Wi-Fi, satellite transmission, etc to form a mobile network. Multi-hop technique is used while sending messages from source to sink; it also reduces delay in packet transferring. The path keeps on changing due to the movement of mobile nodes. Clusters are created to increase the communication speed and make it simple to use. Cluster head is selected based on its power, signal strength, coverage area etc. The major function of the cluster head is to manage the keys and share it with the nodes in the network. The key in a group of mobile nodes are managed by the group key management. Re-Keying is the technique in with the keys will be changed in certain interval of time. In his paper we propose batch rekeying technique which changes a set of keys at certain interval of time which helps in secure communication. Since we combine many systems from different location the security of the network or system reduces which can be overcome by batch rekeying and Mutual authentication scheme. It is used to reduce the steps to generate the one time password and also reduces the packet size.