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Article #64

Re: A Trial Balloon on Registered Keys

#64
From: Carl Ellison
Date: Wed, 28 Oct 1992 15:28
33 lines
1959 bytes
In article <PHR.92Oct27171625@napa.telebit.com> phr@telebit.com (Paul Rubin) writes:
>[...] I saw "Dr. Strangelove" on video [...]
>  General Jack D. Ripper launched a nuclear attack that could
>only be recalled by a crypto key that only he knew.  Then, fearing
>rubber hose cryptanalysis, he blew his brains out (why not?  He was
>trying to blow up the world anyway...).  The good guys had to
>work from his notepad to try to figure out the key.


Yes!

This is why the study of cryptology is so important and will be of
even more importance in the future.

The flaw here was one of protocol design (no doubt specifically
introduced in the movie to make the plot work) -- not one of having a
system which was hard to cryptanalyze.

It is our job as cryptologists to make sure that crypto protocols
controlling such things can not be subverted by major sources of
threat -- including those in the uniform and/or pay of the US Government.


I'm sure, BTW, that the NSA already addresses such problems in designing
real systems for the military.

It's our job to do the same in designing systems for industry.

-- 
-- <<Disclaimer: All opinions expressed are my own, of course.>>
-- Carl Ellison						cme@sw.stratus.com
-- Stratus Computer Inc.	M3-2-BKW		TEL: (508)460-2783
-- 55 Fairbanks Boulevard ; Marlborough MA 01752-1298	FAX: (508)624-7488
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From: cme@ellisun.sw.stratus.com (Carl Ellison)
Newsgroups: sci.crypt
Subject: Re: A Trial Balloon on Registered Keys
Message-ID: <7620@transfer.stratus.com>
Date: 28 Oct 92 15:28:38 GMT
References: <7589@transfer.stratus.com> <1992Oct27.224036.2055@decuac.dec.com> <PHR.92Oct27171625@napa.telebit.com>
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