Subject: RE: [MSEC] Algorithm and implementation of Diffie-Hellman

From: Euchner Martin <[email-masked]>
Date: Tue, 9 Dec 2003 20:28:39 +0100

You may look at some classic group Diffie-Hellman work:

M. Burmester and Y. Desmedt. A secure and efficient conference key distribution system. In A. De Santis, editor, Advances in Cryptology EUROCRYPT '94, Workshop on the Theory and Application of Cryptographic Techniques, volume 950 of Lecture Notes in Computer Science, pages 275-286. Springer-Verlag, 1995.

The paper describes a generalized group-based DH crypto protocol where the group key = g**(x1*x2*x3*...*xn) in a circular-connected group of size n is computed in a round-robin fashion (n-steps).

I haven't seen this algorithm implemented anywhere (should be very straight-forward in small groups).

With kind regards

Martin Euchner.
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 -----Original Message-----
From: 	Yan Li [mailto:[email-masked]] 
Sent:	Tuesday, December 09, 2003 4:38 AM
To:	[email-masked]
Subject:	[MSEC] Algorithm and implementation of Diffie-Hellman

Hi, there,

I hope to compute n-party group keys with DH within one group. Is there an 
algorithm to implement it?

Thanks for any help!

Regards,

Yan Li

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