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ASIACRYPT
2006
Springer

A Scalable Password-Based Group Key Exchange Protocol in the Standard Model

10 years 6 months ago
A Scalable Password-Based Group Key Exchange Protocol in the Standard Model
This paper presents a secure constant-round password-based group key exchange protocol in the common reference string model. Our protocol is based on the group key exchange protocol by Burmester and Desmedt and on the 2-party password-based authenticated protocols by Gennaro and Lindell, and by Katz, Ostrovsky, and Yung. The proof of security is in the standard model and based on the notion of smooth projective hash functions. As a result, it can be instantiated under various computational assumptions, such as decisional Diffie-Hellman, quadratic residuosity, and N-residuosity. Keywords. Smooth Projective Hash Functions, Password-based Authentication, Group Key Exchange.
Michel Abdalla, David Pointcheval
Added 20 Aug 2010
Updated 20 Aug 2010
Type Conference
Year 2006
Where ASIACRYPT
Authors Michel Abdalla, David Pointcheval
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