Re: Telephone privacy gadgets Add: Cryptography

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Article #3459

#3459

From: Henry Spencer
Date: Thu, 19 Oct 1989 15:49

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In article <790@ariel.unm.edu> ee5391aa@hydra.unm.edu.UUCP (Duke McMullan n5gax) writes:
>Expensive and easy to defeat -- probably...

Most any non-digital scrambler, no matter how tricky, is probably going to
fall under this heading.  There is lots and *lots* of redundancy in the
human voice, and it's very hard to hide it completely.

In WW2, somebody at Bell Labs (I think it was) discovered that the then-
current top-security scrambler system could be understood with the unaided
ear after a bit of practice.
-- 
A bit of tolerance is worth a  |     Henry Spencer at U of Toronto Zoology
megabyte of flaming.           | uunet!attcan!utzoo!henry henry@zoo.toronto.edu

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Message-ID: <1989Oct19.154929.19256@utzoo.uucp>

Path: arc1-ca.pugleaf.net!utzoo!henry

References: <799@mccall.uucp> <776@ariel.unm.edu> <OTTO.89Oct17163149@tukki.jyu.fi> <790@ariel.unm.edu>

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Newsgroups: sci.electronics,sci.crypt
Path: arc1-ca.pugleaf.net!utzoo!henry
From: henry@utzoo.uucp (Henry Spencer)
Subject: Re: Telephone privacy gadgets Add: Cryptography
Message-ID: <1989Oct19.154929.19256@utzoo.uucp>
Organization: U of Toronto Zoology
References: <799@mccall.uucp> <776@ariel.unm.edu> <OTTO.89Oct17163149@tukki.jyu.fi> <790@ariel.unm.edu>
Date: Thu, 19 Oct 89 15:49:29 GMT

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