Identity-based public key cryptography

[Ben Laurie]

David Hopwood wrote:
> 
> -----BEGIN PGP SIGNED MESSAGE-----
> 
> Ben Laurie wrote:
> > Brian Gladman wrote:
> > > I have not looked at this scheme but I would consider it a non-starter in
> > > any situation where my security or safety depended on it if, as you suggest,
> > > I have to obtain my private key (or keys) from one or more third parties.
> > >
> > > In this situation there is no effective guarantee that I am the only person
> > > with access to these keys.
> >
> > There's also the issue that if N is ever revealed (N being the public
> > modulus), then _all_ private keys are immediately compromised.
> 
> It's the factorisation of N that is the master secret, not N itself.
> (Makes no difference to your argument, though.)

Yes, sorry, slip of the brain.

Cheers,

Ben.

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