Secure and Efficient Decentralized Group Key Establishment Protocol for Robust Group Communication

Now-a-days Internet has become the common media of communication. Many group communication application such as pay-per-view, stock quote distribution, voiceand video-conferencing, white-boards, distributed simulations, and replicated servers of all types, etc can easily be conducted on the Internet. For conducting such applications, group key is often needed, which can be established by group key establishment protocol. Although many group key establishment protocols have been proposed in the literature, yet nothing has been done to establish their suitability for aforementioned applications. In this paper, we present the succinct description of different decentralized group key establishment protocols and analyze them against parameters such as key independence, one-affects-all, local rekey, data transformation.