Article View: sci.crypt
Article #2598Re: Privacy -- encrypt/decrypt devices on Wireless phones
From: Ralph Wirthlin
Date: Tue, 29 Dec 1992 18:31
Date: Tue, 29 Dec 1992 18:31
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bz223@cleveland.Freenet.Edu (Danny Guy Frezza) writes: > I would like to ask, specifically, if anyone has information >concerning encrypting/decrypting wireless phones? Someone mentioned in a >recent post that Motorola has such a thing, but, how about AT&T or other >big giants? >Do they have any wireless phones that are "secure" or are >there any plans for it, on a wide-scale basis? Although "secure" wireless phones may exist, it would be impossible for the general public to obtain one. Strictly speaking, a "secure" device would allow discussion or dissemination of classified material over a non-secure link (i.e. phone lines, air waves) and thus would be unavailable to the public. As far as Motorola's offering, I suspect it doesn't use anything that the NSA can't crack. It may just turn speach into digital pulses that can be reassembled at the receiving end. >[son listening] to wireless phone conversations, I became annonyed and >explained to him that it was not right to listen in on private >conversations. I beccame quite upset, knowing the potential of this problem. It may not be right, but it certainly is legal as long as the contents of that conversation are not disclosed. Cellular conversations are "protected" from eavesdropping thanks to the fine folks on capitol hill. But that doesn't mean anyone with a scanner or even an old TV which covered UHF channels up to 83 can't listen in. >I see no reason why >for example, a base unit and a handheld cordless phone, cannot have at >least the same privacy as a wired line. For this reason, I am asking this >question as a serious one. I surely would not like someone eavesdropping >on my conversations. I know that the choice was mine, but did not realized >how simple it was to intercept a wirless conversation. If there are no >specific wirless base-handheld phones that employ sophisicated privacy >features, are there any devices that can be added to existing wirless >phones? Thanks. >-- I agree with you, there *should* be devices available which would allow a reasonable amount of privacy. Law enforcement and spy-catching would be hampered, however, if such devices were available to the general public. What's interesting though, is that the *real* spies and criminals probably already use such devices. They're not that hard to build (at least I wouldn't think so). Get a couple of A-D converters, maybe a DES chip, and you're all set, more or less ( I don't know, I've never built one). This lack of privacy is precisely why I *won't* purchase a cordless phone.
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Newsgroups: sci.crypt Path: arc1-ca.pugleaf.net!sparky!uunet!mnemosyne.cs.du.edu!nyx!rwirthli From: rwirthli@nyx.cs.du.edu (Ralph Wirthlin) Subject: Re: Privacy -- encrypt/decrypt devices on Wireless phones Message-ID: <1992Dec29.183101.4176@mnemosyne.cs.du.edu> Sender: usenet@mnemosyne.cs.du.edu (netnews admin account) Organization: University of Denver, Dept. of Math & Comp. Sci. References: <1hpsm7INNp2i@usenet.INS.CWRU.Edu> Date: Tue, 29 Dec 92 18:31:01 GMT Lines: 54