A Key Management Scheme Based on Hybrid Strategy for Dynamic Multicast

Key management for multicast is an hot problem that is researched in multicast security. On the basis of existed schemes,a hybrid strategy is considered,namely,the merits of Iolus scheme based on group hierarchy and LKH scehme based on key hierarchy are combined.A scalable key management scheme of delamination and grouping for large dynamic multicast is offered.This scheme improve the performance by reducing the costs of rekeying and high efficiency ,better scalability.It suits for a large dynamic multicast.