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Group key exchange (GKE) is one of the basic building blocks in securing group communication. A number of solutions to GKE problem have been proposed, but most of them are not scalable and require a number of rounds linear with the number of group members. We present a method of constructing constant-round and identity-based protocol via secret sharing for(More)
The Bresson-Chevassut-Pointcheval (BCP) model is a formalism for the analysis of authenticated group key exchange protocols. Also there are some desired security goals for a practical group key exchange protocol, which are necessary in achieving resistance to active attacks mounted by an increasingly powerful adversary. However, whether a proved secure(More)
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