A Multicast Key Distribution Framework Based On Existing Protocols

As it gets more and more widely used on internet, multicast draws much attention for its security. Multicast distributed part of the system's load to internet, making a group of machines work for a single target. Meanwhile it brings security problems : how to protect a "logic" group , which contains lots of machines not in a single area or internet section ,as we do in unicast times? Finally these problems come down to the multicast cryto-key management protocol. In this paper I put forward a model that can be easily applied on existing internet system .This paper is organized in this way: section one details the problems multicast security meets; section two gives my model; section three makes a simple evaluation and comment on this model.