bugtraq - Re: SHA-1 broken

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Message-ID: <20050216182717.E7251@borg.org>
Date: Wed, 16 Feb 2005 18:27:17 -0500
From: Kent Borg <kentborg@...g.org>
To: Gadi Evron <gadi@...ila.gov.il>
Cc: bugtraq@...urityfocus.com
Subject: Re: SHA-1 broken

On Wed, Feb 16, 2005 at 02:56:27PM +0200, Gadi Evron wrote:
> Now, we've all seen this coming for a while.
> http://www.schneier.com/blog/archives/2005/02/sha1_broken.html
> 
> Where do we go from here?

I am feeling smug that in a project I am working on I earlier decided
our integrity hashes would be a concatenation of MD5 and SHA-1, not
that that's a fix, but it helps.

I am also appreciating that hashes are used (this project included)
for many different things, not all of which are directly affected by
this break.  Yes, this is a bad omen for the longevity of SHA-1 for
other uses, so we will keep an eye on it.

Something I am intrigued about is more sophiticated compositions of,
say, SHA-1 and MD5.

-kb