Is Chaum's System Traceable or Untraceable?
Simon Spero
ses at tipper.oit.unc.edu
Sun May 19 11:09:19 PDT 1996
On Sat, 18 May 1996, sameer wrote:
> >
> > (On the other hand, I have had a longstanding faith that the system can be
> > made to be both payer- and payee-anonymous. Moneychangers, for example.)
I don't know if Ian ever posted his scheme on cypherpunks? There are some
obvious approaches that were discussed here about six months ago; they
involve collaboration between payer and payee (the payee has to
supply the payee with the blinded serial numbers, which can then be
reblinded by the payer for transmission).
This scheme can't be used with the ecash API, and I believe is not looked
on kindly when applying for ecash licences. It makes you a lot more
vulnerable to traffic analysis
Simon
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