Comparative Analysis of Distributed Group Key Establishment Protocols Based on Subgroup Approach

Nowadays, Internet has become the common media of communication. Many group communication applications can easily be conducted on the Internet. Some group communication applications pose strict requirement that in case of network partitions or on each join/leave event, a group key establishment protocol should not execute itself afresh. Although many group key establishment protocols have been proposed in the literature, yet nothing has been done to establish their suitability for aforementioned scenarios. In this paper, we present the succinct description of different decentralized group key establishment protocols based on independent subgroup key approach. And analyze them against parameters such as key independence, one-affects-all, local rekey, data transformation.