From: Eric Hughes <hughes@soda.berkeley.edu>
Date: Wed, 26 May 93 16:29:12 PDT
To: cypherpunks@toad.com
Subject: Digital cash issuess...
In-Reply-To: <9305262158.AA28845@muskwa.ucs.ualberta.ca>
Message-ID: <9305262325.AA05097@soda.berkeley.edu>
MIME-Version: 1.0
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>As a consequence, our
>cash system is much more efficient in both computation and
>communication complexity than previously proposed systems."

I take this with a grain of salt; see below.

>In our opinion, the most interesting of
>these is that the entire cash system (including all the extensions)
>can be incorporated straightforwardly in a setting based on wallets
>with observers, 

I am not surprised that they find this interesting; David Chaum has
patented all the observer protocols.

Having read these protocols in the original, I can say this is not
much of an advantage.  The observer protocols are tremendously
expensive computationally.  Anything you build on top of it won't be
any faster.

Eric