[73624] in North American Network Operators' Group

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Re: Senator Diane Feinstein Wants to know about the Benefits

daemon@ATHENA.MIT.EDU (Mike Tancsa)
Mon Aug 30 16:58:59 2004

Date: Mon, 30 Aug 2004 16:39:56 -0400
To: Dan Hollis <goemon@anime.net>
From: Mike Tancsa <mike@sentex.net>
Cc: <nanog@merit.edu>
In-Reply-To: <Pine.LNX.4.44.0408301310220.22285-100000@sasami.anime.net>
Errors-To: owner-nanog-outgoing@merit.edu


At 04:12 PM 30/08/2004, Dan Hollis wrote:

>yep md5 made the news recently because it's been cracked:
>
>http://techrepublic.com.com/5100-22-5314533.html
>http://www.rtfm.com/movabletype/archives/2004_08.html#001055

Thats a misleading over simplification.  A collision being found implies 
something different than "its cracked."  A weakness that was theorized 
sometime ago has been demonstrated in practice.  Finding collisions and 
altering files in a useful way to produce a duplicate hash are different 
things.  There are FAR bigger security concerns than this one right now IMHO.

I recall even seeing posts about people claiming this meant original data 
being reconstructed from the checksum!  That would be truly amazing since I 
could reconstruct a 680MB ISO from just 61d38fad42b4037970338636b5e72e5a. Wow!

         ---Mike



         ---Mike 


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