RIPA Part III

[David Biggins]

> -----Original Message-----
> From: ukcrypto-admin@chiark.greenend.org.uk=20
> [mailto:ukcrypto-admin@chiark.greenend.org.uk] On Behalf Of=20
> Peter Fairbrother
> Sent: 16 June 2006 15:23
> To: ukcrypto@chiark.greenend.org.uk
> Subject: Re: RIPA Part III
>=20
> I believe they are linked, if only because in order to show=20
> that a decryption is valid, the key must be given.

Surely only in symmetric crypto?   In Assymetric, in theory, you would
decrypt, give them the plaintext and the public key, and they could
encrypt and compare.

Whether you could write a legal policy round that is another question of
course.

Dave.