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Article #1434Re: Encrypted phones, keys, taps, ...
From: Andrew Gilchrist
Date: Mon, 09 Nov 1992 11:46
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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Newsgroups: sci.crypt Path: arc1-ca.pugleaf.net!sparky!uunet!van-bc!cs.ubc.ca!unixg.ubc.ca!kakwa.ucs.ualberta.ca!ee.ualberta.ca!gilchr 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 Nntp-Posting-Host: eigen.ee.ualberta.ca 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 Lines: 11