A New Satellite Multicast Security Protocol Based on Elliptic Curve Signatures

In this paper, we propose a new satellite multicast security protocol based on ECPVSS (elliptic curve Pintsov-Vanstone signature scheme). Our protocol is especially designed for satellite multicast systems having very large member size as well as highly dynamic member join-leave characteristic. We design two independent key distribution layered architecture that has many advantages over classical satellite multicast systems. Our protocol significantly reduces rekeying workload of satellite multicast systems. The number of keys that are stored on the satellite is also reduced. As a novel approach for secure key transmission, we utilize ECPVSS to provide major cryptographic goals while significantly reducing bandwidth consumption. We show that the proposed protocol can handle very large multicast system securely and effectively while providing additional advantages when compared to some widely accepted protocols