From: vcarlos35@juno.com
Date: Thu, 26 Feb 1998 13:57:08 -0800 (PST)
To: cypherpunks@toad.com
Subject: Re: DES search
In-Reply-To: <Pine.LNX.3.95.980226143809.3553E-100000@brokenarrow.us.itd.umich.edu>
Message-ID: <19980226.163857.9662.0.vcarlos35@juno.com>
MIME-Version: 1.0
Content-Type: text/plain


A few terabytes of storage isn't THAT expensive.
Let's see:
1,000,000,000,000 bytes
a CDROM holds about 640 MB, which means that 1563 CDs could hold it.
At CompUSA, that were recently selling recordable CD's for $10 for five,
but
with a mail-in $10 rebate which means you're only paying 32 cents for
postage
for 5 CD's. .32*1563=$500 or so.
Add in the cost of a few CD-R drives @ $300 each = $900 for recording.
Combined total=$1400
Within the reach of distributed.net, I would think.

On Thu, 26 Feb 1998 16:01:55 -0500 (EST) andrew fabbro
<afabbro@umich.edu> writes:
>On Thu, 26 Feb 1998, Dr. Alan Sherman wrote:
>
>> Why doesn't someone speed up the DES search with Hellman's
>> time-space tradeoff, whose precomputation could be done within
>> a month?
>
>Probably because finding spare CPU cycles on thousands of machines is
>easy and free, while finding the disk storage space that you mention
>would be expensive, and I doubt distributed.net has the resources.
>And people who do have the resources are busy doing other things with
>them, or keep them at Fort Meade.
>
>I forget because I haven't read that part of Applied Crypto in a 
>while,
>but wasn't it terabytes of storage?
>

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