New Group Key Management Schemes for Multicast Dynamic Communication Systems

Abstract

Key management in multicast dynamic groups, where users can leave or join at their ease is one of the most crucial and essential part of secure communication. Various key management strategies have been proposed during last decade that aim to improve the security, while decreasing the encryption cost and transmission overheads. In this thesis, two different types of key management schemes are proposed, which work on different levels to reduce the overheads and fill the security gaps that have been pointed out in recent years.