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Efficient Key Agreement for Large and Dynamic Multicast Groups

By Liming Wang and Chuan-Kun Wu

Abstract

Secure multicast represents the core component of many web and multimedia applications such as pay-TV, teleconferencing, real-time distribution of stock market price and etc. The main challenges for secure multicast is scalability, efficiency and authenticity. In this paper, we propose a scalable, efficient, authenticated group key agreement scheme for large and dynamic multicast systems. The proposed key agreement scheme is identity-based which uses the bilinear map over the elliptic curves. Compared with the previously published schemes, our scheme provides group member authenticity without imposing extra mechanism. Furthermore, we give a scalability solution based on the subgroups, which has advantages over the existing schemes. Security analysis shows that our scheme satisfies both forward secrecy and backward secrecy

Topics: multicast, bilinear pairing, key agreement
Year: 2006
OAI identifier: oai:CiteSeerX.psu:10.1.1.134.4999
Provided by: CiteSeerX
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