Hierarchical Multicast Group Key Management Based On Ad Hoc Networks

Ad hoc network without any infrastructure, and applied to a wide variety in need of emergency networking occasions. In this particular environment, it is increasingly of concern in the security.Combined with the characteristics of wireless networks and cable networks group key management methods, a hierarchical structure of management programs is proposed in this dissertation, thereby increasing the efficiency of key updates, reduces the cost of key updates to Ad hoc networks with large traffic handling capacity at the same time, also has high security.The dissertation introduces the Ad hoc network, hierarchical structure and its system architecture based on the structure to do the related study of clustering algorithm is proposed clustering algorithm in a variety of advantages and disadvantages of the program for the new algorithm is the introduction of pave the way for the next.Followed by the dissertation introduces multicast technology, for its problems and done a brief analysis, the overall concept of multicast management, based on the introduction of a multicast group management system concepts, detailed analysis of multicast Management Group's management model. Leads on the Ad hoc network security problems faced. Proposed a hierarchical network based on the Ad hoc group key management solution, on this basis, this program and program data LKH has done a detailed cost comparison. Ad hoc network based on hierarchical structure, hierarchical management under the group key reason the program of the centralized management solution to ease bottlenecks, reduces the cost of key updates, and able to meet the key security update forward and backward security.Wired network through in-depth analysis of the final group key management solution, combined with the characteristics of wireless networks, in-depth analysis of the hierarchical group key management solution. The program has a two-tier management structure, will be limited to the cluster key updates, the update can improve efficiency and reduce system overhead. Through the network environment in a laboratory under the calculation of the amount of the client, server-side computation and network traffic analysis to prove that this program is effective.