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- Xref: sparky uk.misc:3097 alt.conspiracy:14479
- Path: sparky!uunet!pipex!doc.ic.ac.uk!uknet!vision!simon
- From: simon@visionware.co.uk (Simon Taylor)
- Newsgroups: uk.misc,alt.conspiracy
- Subject: Re: Camilla-gate
- Message-ID: <1993Jan22.161524.20250@visionware.co.uk>
- Date: 22 Jan 93 16:15:24 GMT
- References: <JIM.93Jan20163908@hunter.cs.strath.ac.uk>
- Sender: news@visionware.co.uk (News Admin)
- Distribution: uk
- Organization: VisionWare Ltd., Leeds, UK
- Lines: 31
- X-Newsreader: Tin 1.1 PL4
-
- jim@cs.strath.ac.uk (Jim Reid) writes:
- : In article <ANDREASF.93Jan20093124@alpha.dcs.rhbnc.ac.uk> andreasf@dcs.rhbnc.ac.uk (Andreas Fuchsberger) writes:
- : GSM, the new digital (pcm) mobile phone standard, that is
- : all-singing-all-dancing-will-even-support-european-wide-roaming, has at
- : its lowest level a stream cipher were the keys are changed every 5
- : seconds or so, and is available now from operators. But of course
- : it only use encryption between the handset and the base station.
- :
- : This'll probably be good enough to deter the amateur eavesdropper, but
- : isn't the sort of thing that'll cause sleepless nights to the likes of
- : GCHQ or the NSA.
-
- I doubt it since the government aren't going to allow any system
- to be used in the public sector that cannot be cracked by the
- above agencies.
-
- An interesting article in this weeks New Scientist actually makes
- this point during a discussion of a new encryption system
- being tested by Vodaphone. The system does not require a
- descrambler at the non-mobile end of the conversation since the
- scrambling and descrambling occurs just at the mobile and the
- base station. This is fine unless you make a call to another
- mobile which doesn't have the additional hardware required,
- in which case the call is transmitted in clear to and from the
- unequiped party. The additional cost was around #600 for the
- hardware and approx double the current call charges.
-
- This of course only prevents radio interception you can still
- intercept the call on the conventional telephone network :-(
-
- Simon
-