SHA-1 cracked?

[David Farber <dave () farber net>]

------ Forwarded Message
From: Rodney Joffe <rjoffe () centergate com>
Date: Wed, 16 Feb 2005 07:36:36 -0700
To: Dave Farber <dave () farber net>
Subject: SHA-1 cracked?

For IP

Hi Dave,

Bruce Schneier is reporting in his blog that SHA-1 appears to have been
broken by a Chinese group, and that is has collisions "in the the full SHA-1
in 2**69 hash operations, much less than the brute-force attack of 2**80
operations based on the hash length.".

This could have non-trivial implications for many current commercial
operations.

http://www.schneier.com/blog/archives/2005/02/sha1_broken.html

Rodney Joffe
Chairman and CTO
UltraDNS Corporation





------ End of Forwarded Message


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