Wei-Bin Lee, Jia-Hong Li, Chyi-Ren Dow. Efficient Date-Constraint Hierarchical Key Assignment Scheme. In Hamid R. Arabnia, editor, Proceedings of The 2005 International Conference on Security and Management, SAM 2005, Las Vegas, Nevada, USA, June 20-23, 2005. pages 51-57, CSREA Press, 2005.
Abstract is missing.