[16912] in cryptography@c2.net mail archive
SHA-1 cracked
daemon@ATHENA.MIT.EDU (Steven M. Bellovin)
Wed Feb 16 08:25:36 2005
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From: "Steven M. Bellovin" <smb@cs.columbia.edu>
To: cryptography@metzdowd.com
Date: Tue, 15 Feb 2005 23:29:43 -0500
According to Bruce Schneier's blog
(http://www.schneier.com/blog/archives/2005/02/sha1_broken.html), a
team has found collisions in full SHA-1. It's probably not a practical
threat today, since it takes 2^69 operations to do it and we haven't
heard claims that NSA et al. have built massively parallel hash
function collision finders, but it's an impressive achievement
nevertheless -- especially since it comes just a week after NIST stated
that there were no successful attacks on SHA-1.
--Prof. Steven M. Bellovin, http://www.cs.columbia.edu/~smb
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