Craig Gentry, David Molnar, Zulfikar Ramzan. Efficient Designated Confirmer Signatures Without Random Oracles or General Zero-Knowledge Proofs. In Bimal K. Roy, editor, Advances in Cryptology - ASIACRYPT 2005, 11th International Conference on the Theory and Application of Cryptology and Information Security, Chennai, India, December 4-8, 2005, Proceedings. Volume 3788 of Lecture Notes in Computer Science, pages 662-681, Springer, 2005. [doi]
Abstract is missing.