[46877] in Cypherpunks

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Groups of prime order

daemon@ATHENA.MIT.EDU (Joanna Orzechowska)
Wed Jan 10 07:35:56 1996

From: "Joanna Orzechowska" <JOANNA@Vela.filg.uj.edu.pl>
To: cypherpunks@toad.com
Date:          Wed, 10 Jan 1996 13:30:26 GMT+1

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

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