1995-12-19 - Re: What ever happened to… Cray Comp/NSA co-development

Header Data

From: tcmay@got.net (Timothy C. May)
To: cypherpunks@toad.com
Message Hash: 4caf352050650d1e6a5edd4e64c5808afb432a9d9d41e9dde1a97e9008cb17d3
Message ID: <acfb7cab020210041061@[205.199.118.202]>
Reply To: N/A
UTC Datetime: 1995-12-19 05:02:43 UTC
Raw Date: Tue, 19 Dec 1995 13:02:43 +0800

Raw message

From: tcmay@got.net (Timothy C. May)
Date: Tue, 19 Dec 1995 13:02:43 +0800
To: cypherpunks@toad.com
Subject: Re: What ever happened to... Cray Comp/NSA co-development
Message-ID: <acfb7cab020210041061@[205.199.118.202]>
MIME-Version: 1.0
Content-Type: text/plain


At 6:15 PM 12/18/95, Derek Atkins wrote:
>Correction of another detail:
>
>> > tcmay@got.net (Timothy C. May) writes:
>> > When you've done this, and concluded that RSA-129 could be done in, say, X
>> > minutes, then move on to RSA-384 (the BlackNet key cracked by the MIT
>> > group), and on to the 1024- and 2048-bit keys. Tell us how many years or
>> > centuries it will take. (Hint: Rivest and Schneier have done these
>
>RSA-129 is 129 decimal digits, not 129 bits.  This computes to about
>425 bits, which is actually more difficult than the 384-bit Blacknet
>key.

I'm not having much luck on this example, am I? The RSA-129 I remembered
correctly as being 129 decimal digits, but I spaced out on the 384-bit key
and mislabelled it as "RSA-384."

It'll be _many_ years before a 384-decimal-digit number is factored, I
suspect. Let alone a 600-digit modulus, with or without the mysterious
"transphaser" technology mentioned by Anitro.

--Tim May

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