Welcome to the resource topic for 2005/185
Title:
Security properties of two provably secure conference key agreement protocols
Authors: Qiang Tang, Chris J. Mitchell
Abstract:In this paper we analyse the security of two authenticated group key
agreement schemes based on the group key agreement protocol of
Burmester and Desmedt. One scheme was proposed by Burmester and
Desmedt, and uses a separate authentication scheme to achieve
authentication among the participants. We show that this scheme suffers
from a number of security vulnerabilities. The other scheme was
generated using the general protocol compiler of Katz and Yung. We show
that in some circumstances, even if key confirmation is implemented,
this scheme still suffers from insider attacks (which are not covered
by the security model used by Katz and Yung).
ePrint: https://eprint.iacr.org/2005/185
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