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Date:      Fri, 07 Jun 1996 20:09:55 -0700
From:      Poul-Henning Kamp <phk@freebsd.org>
To:        Steve Reid <root@edmweb.com>
Cc:        freebsd-security@freebsd.org
Subject:   Re: MD5 broken (not quite) 
Message-ID:  <1593.834203395@critter.tfs.com>
In-Reply-To: Your message of "Fri, 07 Jun 1996 19:55:12 PDT." <Pine.BSF.3.91.960607185621.444A-100000@bitbucket.edmweb.com> 

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>> Until somebody comes up with a way of solving A = MD5(X) for some given
>> value of A then you don't need to worry to much. 
>
>That would definately be the end of MD5, but AFAIK (I'm not a crypto
>expert) reversing a hash is harder than finding real-world collisions
>where MD5(X) = MD5(Y), which would also be the end of MD5 in many (but not
>all) applications. 

If you want to substitute MD5(Y) for A I'm game, for all I care you can
substitute sin(y) if you want :-)

--
Poul-Henning Kamp           | phk@FreeBSD.ORG       FreeBSD Core-team.
http://www.freebsd.org/~phk | phk@login.dknet.dk    Private mailbox.
whois: [PHK]                | phk@ref.tfs.com       TRW Financial Systems, Inc.
Future will arrive by its own means, progress not so.



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