Re: TETRA encryption
From: Paul Rubin (//phr.cx_at_NOSPAM.invalid)
Date: 05/07/03
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Date: 07 May 2003 01:59:13 -0700
Jim Watt <jimwatt@aol.no.way> writes:
> >See for example <http://www.gnuradio.org>. Even HDTV has been pulled
> >off the air and decoded
>
> Undoubtedly it can be done, BUT it certainly cannot be done by a
> a technical enthusiast with a good scanner and unlimited computer
> resources. Or not at least this one currently ...
First of all despite the existence of A5, I have the impression most
GSM calls aren't encrypted. Second, breaks to A5 have been published.
I believe a technical enthusiast with a fast PC and a wideband A/D
converter (currently costs about 1300 USD but getting cheaper) and and
some software development skills and signal processing knowledge could
indeed intercept GSM. Once the required software was developed, it
could be circulate on the black market (or simply splatted on a
newsgroup) and then anyone with the right hardware could use it with
no special skills.
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