New UK crypto law and an idea on how to defeat it
Sean Rima <firstname.lastname@example.org>
Wed, 1 Dec 1999 22:38:31 +0000
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On Wed, 01 Dec 1999, Billy Donahue wrote:
> > > > You ignore a couple of major points of British law, in that the pol=
> > > > chief would need reasonable grounds to believe that Bob was involve=
> > > > in a crime. He would not be able to demand Bob's key if he believed=
> > > > was having an affair with his wife. Don't forget that the police ch=
> > > > also answerable to British law. But I also understand that you were=
> > > > it as an example.
> > >=20
> > > Fine, the police chief concocts a phoney charge against Bob and uses =
> > > a pretense to get to the files.
> > Hey that *never* happens :)
> M.L.K.Jr. was thrown in jail for a few DAYS for driving 30mph in a 25mph =
> shortly after the onset of the bus boycott.
Notice the :)
> > > > Bob would not be able to claim that the files were encrypted using
> > > > random keys without his knowledge as he would have had to start the
> > > > process.
> > >
> > > Yes but Bob can *lie*. The onus is on the police to prove he is lying=
> > > do they do that given that they don't know whether the second plainte=
> > > random or not?
> > It would be difficult to know but I hazard a guess that looking at the
> > source they may get an idea. As I said in my original reply, the police
> > would only use it for major criminals and Pedophiles, who it is known u=
> > crypto to ensure that the stuff remains hidden from the police's eye.
> Nyahh... the source to the tool?
> If you can tell that from knowing about the cipher, then the tool isn't
> a cryptographic tool at all, it's just a fancy multiplexer.
> It's certainly possible to make the ciphertext indistinguishable from
> a single encrypted message.
My phrasing was wrong. I hazard a guess that looking at the source to a
program, a decent programmer could get the gist of what happens. Of course
the dificulty with PGP/GPG is the random bits.
> PS: I really hope you're being sarcastic about the Pedophile and Organize=
d Crime thing.
Given the normal police man's thought, any one using any form for crypto
would be guilty of one or the other or both of the above. Otherwise why
would a decent person want to use it.
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