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Re: digital cash and identity disclosure

>>>>> "Holger" Reif <[email protected]> writes:

Holger> I don't understand how this could happen? The two coins are
Holger> identical (as I understood it from the tech backgound of
Holger> ecash). what has a double- spended coin what a copied
Holger> single-spended coin not has?

In Chaum's system spending a coin is a cut-and-choose protocol: with
overwhelming probability you reveal informations about your ID, when
you present your e-coin a second time.


Michael Deindl