Date Added: Mar 2011
The exponential growth of the Internet for the last few years along with the relative increase in bandwidth of networks has resulted in the development of new services. Although the unicast communication has been dominant so far, the need for multicast communication is mandatory both in the perspective of Internet Service Providers and Distributors. The Key management plays a pivotal role in providing the common security services such as authentication and integrity for a group communication. The secure group communication provides both secure multipoint communication and point-to-point communication. The encryption of the point-to-point messages is made with a key shared by members both ends.