Dan Boneh, Michael Hamburg. Generalized Identity Based and Broadcast Encryption Schemes. In Josef Pieprzyk, editor, Advances in Cryptology - ASIACRYPT 2008, 14th International Conference on the Theory and Application of Cryptology and Information Security, Melbourne, Australia, December 7-11, 2008. Proceedings. Volume 5350 of Lecture Notes in Computer Science, pages 455-470, Springer, 2008. [doi]
Abstract is missing.