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- Newsgroups: sci.crypt
- Path: 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
-
- 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.
-
-
-
-