Guojun Wang, Jie Ouyang, Hsiao-Hwa Chen, Minyi Guo. ID-Based Hierarchical Key Graph Scheme in Multi-Privileged Group Communications. In Proceedings of the Global Communications Conference, 2007. GLOBECOM 07, Washington, DC, USA, 26-30 November 2007. pages 172-176, IEEE, 2007. [doi]
Abstract is missing.