[ excerpt from developer's www site with modifications ]

Faster implementation of techniques described in Cryptanalysis for
Hash Functions MD4 and RIPEMD, by Xiaoyun Wang, et al.

MD4 Collision Generator by Patrick Stach <pstach@stachliu.com>
Implementation of paper by Xiaoyun Wang, et. al.

Author: Patrick Stach <pstach@stachliu.com>
WWW: http://www.stachliu.com/collisions.html