[8449] in cryptography@c2.net mail archive
Re: Voice over OTP during WW2.
daemon@ATHENA.MIT.EDU (Steven M. Bellovin)
Mon Jan 15 13:29:17 2001
From: "Steven M. Bellovin" <smb@research.att.com>
To: "Trei, Peter" <ptrei@rsasecurity.com>
Cc: "'cypherpunks@cyberpass.net'" <cypherpunks@cyberpass.net>,
"'cryptography@c2.net'" <cryptography@c2.net>
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Date: Mon, 15 Jan 2001 12:55:01 -0500
Message-Id: <20010115175508.A35B735DC2@smb.research.att.com>
In message <F504A8CEE925D411AF4A00508B8BE90A91EB3E@exna07.securitydynamics.com>
, "Trei, Peter" writes:
>http://www.nsa.gov/wwii/papers/start_of_digital_revolution.htm
>
>Fascinating article at the NSA site about the
>heroic efforts to provide long-distance secure voice
>communications over radio.
>
>The good folks at Bell Labs essentially invented
>digitized, compressed voice, and encrypted it
>using synchronized pairs of records of
>random data at each end. Each terminal site
>had 55 *tons* of equipment!
>
>Apparently this astounding - and apparently
>successful - effort was mostly declassified
>back in '76, but I first heard about it in
>Stevenson's Cryptonomicon last year.
There's an exhibit on this system in the War Room museum in London.
--Steve Bellovin, http://www.research.att.com/~smb
