Why Hierarchical Key Distribution Is Appropriate for Multicast Networks

The design rationale for many key distribution schemes for multicast networks are based on heuristic arguments on e ciency exi bility and scalability In most instances the choice of key server placement in a multicast network architecture is based on intuitive cryptographic considerations We use an analytical model of multicast group formation and network growth to look at the selection of a key distribution scheme from a network operation perspective Thereafter this model is used to validate the choice of hierarchical hybrid key distribution model as the most appropriate