Security of Chien's Efficient Time-Bound Hierarchical Key Assignment Scheme.

Xun Yi Security of Chien's Efficient Time-Bound Hierarchical Key Assignment Scheme. 1298-1299 2005 17 IEEE Trans. Knowl. Data Eng. 9 http://doi.ieeecomputersociety.org/10.1109/TKDE.2005.152 db/journals/tkde/tkde17.html#Yi05