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Date:      Wed, 18 Aug 2004 17:46:48 -0600
From:      Brett Glass <brett@lariat.org>
To:        chris-freebsd@randomcamel.net, freebsd-security@freebsd.org
Subject:   Re: Report of collision-generation with MD5
Message-ID:  <6.1.1.1.2.20040818174540.08540a60@localhost>
In-Reply-To: <20040818205440.GL9800@zot.electricrain.com>
References:  <200408181724.i7IHORYl013375@bunrab.catwhisker.org> <20040818175804.GI346@cowbert.net> <41239B0C.1000703@rdslink.ro> <20040818182957.GK346@cowbert.net> <20040818205440.GL9800@zot.electricrain.com>

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At 02:54 PM 8/18/2004, Chris Doherty wrote:

>what you can do, if you have a proper attack formula, is find *a* message
>that produces *that one hash*. that is, if I have message M which produces
>hash H, I can use the attack to find *a* message M' which will also
>produce hash H.

The thing is, passwords are short and have limited entropy. Chances are, 
if you find a password that produces the same hash, it's M.

--Brett



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