Perry Metzger posted a note to coderpunks about

A paper by Hans Dobbertin dated May 2 in private circulation has found an easy method for generating collisions (not pseudocollisions as was done in previous work) in the MD5 compression function. I was told that this was public information.

And somebody provided a URL to http://www.cs.ucsd.edu/users/bsy/dobbertin.ps The coderpunks discussion has been titled Re: Favorate flavor of hash? for which I suppose there are alternative interpretations :-) # Thanks; Bill # Bill Stewart, stewarts@ix.netcom.com, +1-415-442-2215 # goodtimes signature virus innoculation