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Article #252

Covert channel

#252
From: Hilarie Orman
Date: Wed, 12 Aug 1992 23:44
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In article <1992Aug12.204649.4110@osf.org>, karger@osf.org (Paul A.
Karger) writes: 
> Covert channels involve illicit communications between two processes,
> a transmitter process that is running a Trojan horse, and a receiver
> process that belongs to a spy.

You seem to imply that it can't be a covert channel without intent.
I've always relied on the notion of information flow - if the writer
of the transmitter program did not specify the information as an
output, and if a receiver program can detect the information, then you
have a covert channel, a concept further divided into storage and
timing channels.

If you don't agree, what alternate term would you use to describe the
password inference problem originally described?
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Message-ID: <20477@optima.cs.arizona.edu>
Path: arc1-ca.pugleaf.net!sparky!uunet!gatech!news.ans.net!cmcl2!arizona!ho
References: <71269183717599@juju.mcs.anl.gov> <61350002@otter.hpl.hp.com> <1992Aug12.204649.4110@osf.org>

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Path: arc1-ca.pugleaf.net!sparky!uunet!gatech!news.ans.net!cmcl2!arizona!ho
From: ho@cs.arizona.edu (Hilarie Orman)
Newsgroups: comp.security.misc
Subject: Covert channel
Message-ID: <20477@optima.cs.arizona.edu>
Date: 12 Aug 92 23:44:17 GMT
References: <71269183717599@juju.mcs.anl.gov> <61350002@otter.hpl.hp.com> <1992Aug12.204649.4110@osf.org>
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