[hashcash] [Fwd: [IRR] New Attacks on Cryptographic Hash Functions]
- From: "Eric S. Johansson" <esj@xxxxxxxxxx>
- To: hashcash <hashcash@xxxxxxxxxxxxx>
- Date: Tue, 17 Aug 2004 20:57:21 -0400
time to change the hashes??
-------- Original Message --------
Subject: [IRR] New Attacks on Cryptographic Hash Functions
Date: Tue, 17 Aug 2004 20:54:33 -0400
From: Ted Anderson <TedAnderson@xxxxxxxxxxxxxx>
To: irregulars@xxxxx
There is some excitement at Crypto 2004 in Santa Barbara, CA with the
release of news on several attacks on important hash functions used in
most cryptographic software. MD5 has been broken and a collision for
SHA0 has been found. There are rumors that a break on SHA1 will be
announced tonight (7PM PDT) at the Crypto 2004 Rump Session[4]. No one
uses SHA0 anymore, but SHA1 is a trivial variant "suggested" by the NSA
to "improve" the originally proposed SHA0. Conspiracy theorists keep in
mind that the NSA's record of suggesting improvements to DES now appear
very well taken.
There's a decent story on CNET[1] and of course Slashdot coverage[2].
The announcement and considerable follow up and discussion appear on
sci.crypt[3]. The Rump Session is supposed to be carried live via
Webcast[5,6]. I'm going to try to tune in and watch.
Ted
[1] http://zdnet.com.com/2100-1105_2-5313655.html
[2] http://slashdot.org/articles/04/08/17/0030243.shtml
[3] http://groups.google.com/groups?th=2f215db4bf662feb
[4] http://www.iacr.org/conferences/crypto2004/rump.html
[5] http://128.111.55.99/crypto.htm
[6] mms://128.111.55.99/crypto
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