From: "Joanna Orzechowska" <JOANNA@Vela.filg.uj.edu.pl>
Date: Wed, 10 Jan 1996 20:39:22 +0800
To: cypherpunks@toad.com
Subject: Groups of prime order
Message-ID: <8F61E63A05@Vela.filg.uj.edu.pl>
MIME-Version: 1.0
Content-Type: text/plain


Hi CP's!

Hope someone would be so kind to help me wiht this:

Is it weaker to use arithmetic mod (p-1), and hence all Zp, when 
suggested to work in a group of prime order q?

This question is connected with discrete log signature protocols such 
as that in Pedersen's "Improved privacy in Wallets with Observers" or 
Schnorr's.

I would appreciate any help ASAP, since I'm in a hurry.
Please, answer me by personal mail since I'm not subscribed to the 
CPs list now.

Thanks and best wishes from Poland.

            Joanna