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Article #1434

Re: Encrypted phones, keys, taps, ...

#1434
From: Andrew Gilchrist
Date: Mon, 09 Nov 1992 11:46
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While I don't argue that such a sampling/compression/encryption/
transmission/decryption/decompression/reconstruction could be done virtually
in real time on a typical phone line with a lot of funding, I will need
some math and some specifications for devices capable of carrying this out
reliably on an analog cellular network before I am convinced.  I don't have
bandwidth specs or s/n values for cellular transmissions, so I can't do this
for myself.

As for scramblers, I'd like to point out that digital scrambling of phone
lines (not subscriber lines generally) predates the DES.
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Message-ID: <gilchr.721309568@ee.ualberta.ca>
Path: arc1-ca.pugleaf.net!sparky!uunet!van-bc!cs.ubc.ca!unixg.ubc.ca!kakwa.ucs.ualberta.ca!ee.ualberta.ca!gilchr
References: <1992Nov6.012330.4470@shearson.com> <1992Nov7.045122.15675@netcom.com> <1992Nov7.150423.26670@nwnexus.WA.COM>

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Newsgroups: sci.crypt
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From: gilchr@ee.ualberta.ca (Andrew Gilchrist)
Subject: Re: Encrypted phones, keys, taps, ...
Message-ID: <gilchr.721309568@ee.ualberta.ca>
Sender: news@kakwa.ucs.ualberta.ca
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Organization: University Of Alberta, Edmonton Canada
References: <1992Nov6.012330.4470@shearson.com> <1992Nov7.045122.15675@netcom.com> <1992Nov7.150423.26670@nwnexus.WA.COM>
Date: Mon, 9 Nov 1992 11:46:08 GMT
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