[45006] in Cypherpunks
Re: Still more on the Digicash protocol
daemon@ATHENA.MIT.EDU (Bill Frantz)
Fri Dec 8 14:56:08 1995
Date: Fri, 8 Dec 1995 11:49:42 -0800
To: Mark Twain Ecash Support <support@marktwain.com>,
daw@delhi.CS.Berkeley.EDU (David A Wagner)
From: frantz@netcom.com (Bill Frantz)
Cc: cypherpunks@toad.com
At 12:26 12/8/95 -0600, Mark Twain Ecash Support wrote:
>DigiCash agrees that it is desirable to encrypt the payment request. The
>problem is how? You can't use the payor's public key, since the payor is
>anonymous to the payee. There are other, high overhead, protocols that might
>be used, but after taking MIM into account, securing the payment request
>from within Ecash while retaining acceptable latency is much harder to
>acomplish than one might think.
Wouldn't a Diffie-Hellman key exchange work here? Or is that too much overhead?
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