@misc{cryptoeprint:2005:248, author = {Michael Szydlo and Yiqun Lisa Yin}, title = {Collision-Resistant usage of MD5 and SHA-1 via Message Preprocessing}, howpublished = {Cryptology ePrint Archive, Report 2005/248}, year = {2005}, url = {http://eprint.iacr.org/2005/248}, }