A secure and scalable group key exchange system

Authors:
Mike Burmester;Yvo Desmedt
Affiliations:
Computer Science Department, Florida State University, Tallahassee, FL;Computer Science Department, Florida State University, Tallahassee, FL and University College, London, UK
Venue:
Information Processing Letters
Year:
2005

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Abstract

We present a Group Key Exchange protocol which extends in a natural way the Diffie-Hellman protocol. Our protocol is scalable: it has two rounds (for n 2 parties) and the number of modular exponentiations per user is constant. It is secure against a passive adversary if the Diffie-Hellman problem is intractable.