Juxtaposition

There are still not known attacks against encryption schemes that make use of these, but certainly anything relying on these hashes for integrity protection should switch to alternate mechanisms.

Sent: Monday, November 14, 2005 10:48 AM To: cryptography@metzdowd.com Subject: MD4 and MD5 collision generators

I am releasing my collision generators for MD4 and MD5. They have
significant time improvements over the ones described in the papers by Wang, et al.

MD4 collisions can be generated almost instantly, MD5 can be generated
in approximately 45 minutes on my p4 1.6ghz (on average).

http://www.stachliu.com/collisions.html

Enjoy
-Patrick Stach