Secure and Energy Efficient Key Management Scheme Using Authentication in Cluster Based Routing Protocol

Previous key management methods are not adequate for secure data communication through cluster-based routing. Because the cluster head is changed at each round in cluster-based routing, it has to take the step of authentication or shared key setting with each member node. In addition, because most of previous key management mechanisms do not assign mobility to all nodes in the sensor network, there happens a large overhead for secure communication when the mobility of nodes are considered. Accordingly, this study proposes a secure and efficient key management mechanism suitable for cluster-based routing even when the nodes are mobile and new nodes are inserted frequently.