New UK crypto law and an idea on how to defeat it

Sean Rima Sean Rima <>
Wed, 1 Dec 1999 21:03:48 +0000

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Hi David!

On Wed, 01 Dec 1999, David Pick wrote:

> > This is the point. Bob may or may not know both sets of keys. The encry=
> > tool may have used a random plaintext and a random key or it may not. T=
> > only person who knows for sure is Bob. The cops can't prove it either w=
> > assuming that the encryption technique is suitably robust against any
> > analysis they might bring against it.
> >=20
> > > 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.
> >=20
> > 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 plaintext=
> > random or not?
> Several comments more-or-less at random:
<cut to save bandwidth>=20 I agree with what you say as you say it way better than I could ever try. I am aware of the various sections of PACE although it has been a number of years since I have referred to them :) Sean --=20 GPG ID (DSA) 92B9D0CF PGP2 ID 19592A0D Linux User: #124682 ICQ: 679813 To get my PGP Keys send me an empty email with retrieve as the subject It said "Needs Windows 95 or better". So I installed Linux... --qcHopEYAB45HaUaB Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.0.0 (GNU/Linux) Comment: See Headers for details about obtaining my key iEYEARECAAYFAjhFjTQACgkQGdiK9pK50M9pZgCZAUq5PfoB+NE2ABCSaDVvIeN4 8aIAmwT8MwIGwbx8ELFIeT0pJdB61R1p =WwAp -----END PGP SIGNATURE----- --qcHopEYAB45HaUaB--