From owner-freebsd-security@FreeBSD.ORG  Thu Aug 19 23:11:30 2004
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From: "George F. Costanzo" <afx@pkl.net>
To: "'David Wolfskill'" <david@catwhisker.org>
Date: Fri, 20 Aug 2004 09:11:25 +1000
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cc: freebsd-security@freebsd.org
Subject: RE: Report of collision-generation with MD5
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The reporter got mixed up. Antoine Joux published a SHA-0 collision, while
the Chinese researchers, Xiaoyun Wang and co. put out the paper on
collisions in MD5, MD4, HAVAL, and full RIPEMD. A copy can be found here:

http://eprint.iacr.org/2004/199.pdf

This is the second version, after they used the wrong IV's initially. They
plan to release a more detailed version in the near future. I wouldn't just
wave off the attack; they seem to be able to find collisions fairly
quickly. For more info see recent posts on:

http://www.mail-archive.com/cryptography%40metzdowd.com/

--
George F. Costanzo <afx@pkl.net>
PGP Fingerprint: 1E4F 09F2 D637 B917 8D61  0413 4FBC 7DB0 1407 2B6D 

> -----Original Message-----
> From: owner-freebsd-security@freebsd.org [mailto:owner-freebsd-
> security@freebsd.org] On Behalf Of David Wolfskill
> Sent: Thursday, August 19, 2004 3:24 AM
> To: freebsd-security@freebsd.org
> Subject: Report of collision-generation with MD5
> 
> Just got a pointer to this via ACM "TechNews Alert" for today:
> 
> http://www.acm.org/technews/articles/2004-6/0818w.html#item2
> 
> Seems that "... French computer scientist Antoine Joux reported on
> Aug. 12 his discovery of a flaw in the MD5 algorithm, which is often
> used with digital signatures...."
> 
> There's more in the article cited above.
> 
> Peace,
> david
> --
> David H. Wolfskill				david@catwhisker.org
> Evidence of curmudgeonliness:  becoming irritated with the usage of the
> word "speed" in contexts referring to quantification of network
> performance, as opposed to "bandwidth" or "latency."