From: hughes@ah.com (Eric Hughes)
Date: Fri, 19 Nov 93 12:21:58 PST
To: cypherpunks@toad.com
Subject: All our eggs in one basket?
In-Reply-To: <9311191945.AA08821@bilbo.suite.com>
Message-ID: <9311192023.AA06333@ah.com>
MIME-Version: 1.0
Content-Type: text/plain


>If I failed to reply with a signed receipt, the bank could invalidate the  
>digital coin.  

Unfortunately for this idea, when the bank uses a blind signature to
issue coins, it doesn't know what coin it just issued actually looks
like.  The bank signs a blinded form of the coin.  The blinded form is
unblinded by the withdrawer, and the bank cannot know what it looks
like.

Eric