Jun Shao, Zhenfu Cao, Licheng Wang, Xiaohui Liang. Proxy Re-signature Schemes Without Random Oracles. In K. Srinathan, C. Pandu Rangan, Moti Yung, editors, Progress in Cryptology - INDOCRYPT 2007, 8th International Conference on Cryptology in India, Chennai, India, December 9-13, 2007, Proceedings. Volume 4859 of Lecture Notes in Computer Science, pages 197-209, Springer, 2007. [doi]
Abstract is missing.