This book presents a new protocol for a scalable multicast key distribution protocol. The proposed protocol is based on Key Management using Boolean Function Minimization (KM-BFM) technique. It is considered one of the best solutions proposed for solving the scalability of multicast security protocols depending on a centralized manager. Instead of using one tree as in KM-BFM, the members are divided into a number of subgroup trees. The comparison of the proposed protocol with KM-BFM protocol shows that the proposed protocol achieves a lower storage at both the group manager and the group...