Efficient Key Management for Secure Wireless Multicast

Along with the rapid development of mobile devices and widespread deployment of wireless networks, more and more content and service providers are increasingly interested in provide multicast applications over wireless networks. Before wireless group-oriented applications can be deployed in large scale, security must be guaranteed. Group key management is a critical issue in the wireless multicast security. In this paper, we propose a new key management scheme dedicated to wireless networks. In the proposal, we divide group members into several small operation units to perform the micro key management. Compared to the logical key hierarchy (LKH), our proposal can significantly reduce the workload of key server and provide efficient key management operations for secure wireless multicast.