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Secure and reliable group communication is an active area of this paper. The main problem in secure group communication is group dynamics and key management. It focuses on trade-offs between storage cost and rekeying cost for secure multicasting. Membership in secure multicast group is dynamic and requires multiple updates in a single time frame. A scalable secure group communication model ensures that whenever there is a membership change, a new group key is generated and distributed to the group members with minimal computation and communication cost.
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