@misc{cryptoeprint:2003:200, author = {Zheng Dong , Shengli Liu & kefei Chen}, title = {Cryptanalysis of B.Lee-S.Kim-K.Kim Proxy Signature}, howpublished = {Cryptology ePrint Archive, Report 2003/200}, year = {2003}, url = {http://eprint.iacr.org/2003/200}, }