Peter Fairbrother <[EMAIL PROTECTED]> writes:
> Incidently, even the A5/1 algorithm is supposedly not very secure against eg
> LEAs, Corporations, or perhaps even a very dedicated amateur, though I have
> no exact details to hand.
A normal PC with several hundred gigabytes of disk space and two weeks
preprocessing is sufficient to break A5/1 in about two minutes. Some
known plaintext is needed; I don't know whether anyone's measured how
difficult it is to make guesses at knownn plaintext in a cellphone
voice stream.
--
__ Paul Crowley
\/ o\ [EMAIL PROTECTED]
/\__/ http://www.cluefactory.org.uk/paul/
"Conservation of angular momentum makes the world go around" - John Clark
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