From: Jiri Baum <jirib@sweeney.cs.monash.edu.au>
Date: Mon, 23 Oct 95 17:58:29 PDT
To: bigmac@digicash.com (Marcel van der Peijl)
Subject: Re: Re: Chaum's cash: backup?
In-Reply-To: <199510230611.HAA25001@digicash.com>
Message-ID: <199510240052.KAA06728@sweeney.cs.monash.edu.au>
MIME-Version: 1.0
Content-Type: text/plain


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Hello Marcel van der Peijl <bigmac@digicash.com>
  and jamesd@echeque.com, cypherpunks@toad.com

MvdP wrote:
> "James A. Donald" <jamesd@echeque.com> wrote:
> >>if it was like "real" cash, then it really would be lost.
> >It is really lost.
...
> I could give a hint: your random state initializer is not the too-often 
> used srand( time( NULL ) ) but user-chosen during installation.

This sounds great... Will the bank be running crack against the proto-coins
it gets? (Say, at the behest of a LEA?)

Is there any way for the user to re-initialize the random state?

> Write that initializer down and you can re-generate all coins.
...

That's going to be one hell of a valuable piece of paper.
(Certainly to your enemies/prosecutors - it reveals the blinding factors
for every coin you ever spent.)


Please tell me I've got it all wrong...

Jiri
- --
If you want an answer, please mail to <jirib@cs.monash.edu.au>.
On sweeney, I may delete without reading!
PGP 463A14D5 (but it's at home so it'll take a day or two)
PGP EF0607F9 (but it's at uni so don't rely on it too much)

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