@misc{cryptoeprint:2007:019, author = {Changshe Ma, Jian Weng and Dong Zheng}, title = {Fast Digital Signature Schemes as Secure as Diffie-Hellman Assumptions}, howpublished = {Cryptology ePrint Archive, Report 2007/019}, year = {2007}, url = {http://eprint.iacr.org/2007/019}, }