New multicast authentication protocol for entrusted members using advanced encryption standard

Today there is a widening in digital technologies and increasing in new multimedia services like: pay-per-view TV, interactive simulations, teleconferencing. So there is an increasing demand for multicast communication. There is a number of security issues in multicast communication directly related to the specific nature of multicast. In this paper, we propose a new scheme for authenticating streamed data delivered in real-time over an insecure network, and we concentrate on the multicast authentication problem. Important requirements of multicast communication protocols are: to perform authentication in real-time, to resist packet loss and to have low communication and computation overheads. In this paper, a new multicast authentication scheme is proposed. It is suitable for real time applications. It uses the advanced encryption standard algorithm to solve the problem of entrusted members. This scheme uses the idea of the new index number each time the member sends certain block of packets in the multicast group.