1993-07-09 - Hmm…hardware secure phone?
Header Data
From: technopagan priest <tedwards@wam.umd.edu>
To: cypherpunks@toad.com
Message Hash: dce1ba4e73a31b50555f40cce012620b0474d1ca9ee33924628119897813ecdf
Message ID: <199307091816.AA09211@rac3.wam.umd.edu>
Reply To: N/A
UTC Datetime: 1993-07-09 18:16:43 UTC
Raw Date: Fri, 9 Jul 93 11:16:43 PDT
Raw message
From: technopagan priest <tedwards@wam.umd.edu>
Date: Fri, 9 Jul 93 11:16:43 PDT
To: cypherpunks@toad.com
Subject: Hmm...hardware secure phone?
Message-ID: <199307091816.AA09211@rac3.wam.umd.edu>
MIME-Version: 1.0
Content-Type: text/plain
I've been reading up on Codecs. Motorola has the MC145505 PCM Codec
which samples at 8khz and the PCM output is at 64kbps. We can then
use the MC145532 ADPCM Transcoder to reduce the data stream to
16kbps. With the breaks in spoken languages, perhaps we could get
this to compress just enough to go through a 14.4 kbps modem.
Anyway, who knows of a DES or RSA chip which will do 16kbps?
Then all we need is a microcontroller to run the show, and
perform D-H or RSA key exchange.
-Thomas
Thread
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- 1993-07-09 (Fri, 9 Jul 93 11:16:43 PDT) - Hmm…hardware secure phone? - technopagan priest <tedwards@wam.umd.edu>
- 1993-07-09 (Fri, 9 Jul 93 12:19:02 PDT) - Re: Hmm…hardware secure phone? - Timothy Newsham <newsham@wiliki.eng.hawaii.edu>
- 1993-07-09 (Fri, 9 Jul 93 12:20:15 PDT) - Hmm…hardware secure phone? - eichin@cygnus.com (Mark Eichin)
- 1993-07-09 (Fri, 9 Jul 93 12:47:23 PDT) - Re: Hmm…hardware secure phone? - thug@phantom.com (Murdering Thug)