Jyh-haw Yeh. A Time-Bound Hierarchical Key Assignment Cryptosystem with No Lifetime Limit. In Selim Aissi, Hamid R. Arabnia, editors, Proceedings of the 2007 International Conference on Security & Management, SAM 2007, Las Vegas, Nevada, USA, June 25-28, 2007. pages 131-137, CSREA Press, 2007.
Abstract is missing.