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From: lambert@boring.UUCP
Newsgroups: net.crypt
Subject: Re: Cryptographic Signature Schemes
Message-ID: <6694@boring.UUCP>
Date: Wed, 20-Nov-85 08:31:34 EST
Article-I.D.: boring.6694
Posted: Wed Nov 20 08:31:34 1985
Date-Received: Sat, 23-Nov-85 04:57:18 EST
References: <10970@ucbvax.BERKELEY.EDU> <576@ttrdc.UUCP> <332@snow.warwick.UUCP>
Reply-To: lambert@boring.UUCP (Lambert Meertens)
Organization: CWI, Amsterdam
Lines: 30
Apparently-To: rnews@mcvax.LOCAL

In article <332@snow.warwick.UUCP> rpt@warwick.UUCP (Richard Tomlinson) writes:

> In article <576@ttrdc.UUCP> levy@ttrdc.UUCP (Daniel R. Levy) writes:
>> Better yet, keep the documents themselves secret, like they are supposed to
>> be.
> I think you've missed the whole point of the original idea. Since the
> documents are forgeries, keeping documents secret would make no difference.
> But, if all secret documents are kept encrypted along with a secure
> signature then it would be possible to prove beyond reasonable doubt that
> the 'proof' that the KGB provide is forged.

Another advantage of this approach is that the KGB could then *prove* that a
secret document leaked to them *is* authentic, which currently only gullible
people tend to believe.  Seriously, I think that there are two motives for
keeping documents secret: (1) they may contain information about strategy
etc. that opponents can use to their advantage in determining their strategy;
and (2) the documents may contradict publicized policies, such as "respect
for human rights" or peaceful intentions.  In the first case, an opponent
would not want to reveal the fact that the information was no longer a
secret.  In the second case, the originator would be silly to attach an
unforgeable signature.

     Lambert Meertens
     ...!{seismo,okstate,garfield,decvax,philabs}!lambert@mcvax.UUCP
     CWI (Centre for Mathematics and Computer Science), Amsterdam
-- 

     Lambert Meertens
     ...!{seismo,okstate,garfield,decvax,philabs}!lambert@mcvax.UUCP
     CWI (Centre for Mathematics and Computer Science), Amsterdam