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Article #1116

public key interception and translation, etc.

#1116
From: Carl Ellison
Date: Wed, 30 Sep 1992 15:21
18 lines
1382 bytes
All this talk about total isolation and how the enemy can translate your
public keys given that all communication is trapped is a fine parlor game,
perhaps, but hardly relevant.

The criteria for trusted systems pay quite a lot of attention (perhaps more
than is deserved) to detecting and preventing covert channels.  It's a
*very* hard problem -- and that assumes that you have total ownership of
the computer system and all you're trying to prevent is communication from
within the one system -- and you're allowed to announce that you've forbidden
access -- and the user isn't allowed to complain.

To achieve complete spoofing of the kind being discussed here, it's not a
computer system for which covert channels are being prevented but a social
system and the enemy has to achieve it without letting anyone know that the
censor/intruder is active -- in a society in which free speech is a guaranteed
right, no less.

How about taking this discussion to alt.tv.mission.impossible?
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Message-ID: <6880@transfer.stratus.com>
Path: arc1-ca.pugleaf.net!sparky!uunet!gatech!rpi!bu.edu!transfer!ellisun.sw.stratus.com!cme

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Path: arc1-ca.pugleaf.net!sparky!uunet!gatech!rpi!bu.edu!transfer!ellisun.sw.stratus.com!cme
From: cme@ellisun.sw.stratus.com (Carl Ellison)
Newsgroups: sci.crypt
Subject: public key interception and translation, etc.
Message-ID: <6880@transfer.stratus.com>
Date: 30 Sep 92 15:21:45 GMT
Sender: usenet@transfer.stratus.com
Organization: Stratus Computer, Software Engineering
Lines: 18