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Re: Dobbertin & md5

daemon@ATHENA.MIT.EDU (Adam Back)
Wed Nov 5 12:07:23 1997

Date: Wed, 5 Nov 1997 09:59:17 GMT
From: Adam Back <aba@dcs.ex.ac.uk>
To: ant@notatla.demon.co.uk
CC: cryptography@c2.net
In-reply-to: <199711050004.AAA05899@notatla.demon.co.uk> (message from
	Antonomasia on Wed, 5 Nov 1997 00:04:09 GMT)


Ant writes:
> By Dobbertin's 2 page article, do you mean the one in mid-May on md4 ?
> I have not noticed any follow-up either.  My cryptography & coderpunks
> archives show only 2 grep hits for 'dobbertin'.

No.  I mean this one*:

	http://www.dcs.ex.ac.uk/~aba/crypto-papers/dobbertin.ps

It's 2 pages and it's title is `Cryptanalysis of MD5 compress' dated
May 2nd 1996.

However it is most uninformative about _how_ he constructed the
collision, and how large a subset of states it would work for, and
cost functions for the subset(s) it applies to.  (Only quantative
statement in the entire document is `the above collision took 10 hours
on a pentium').

Adam

(* I dump papers I have downloaded but can't remember URLs for when I
want to refer to them in http://www.dcs.ex.ac.uk/~aba/crypto-papers/)

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