Welcome to the resource topic for 2004/127
Title:
DDH-based Group Key Agreement in a Mobile Environment
Authors: Junghyun Nam, Jinwoo Lee, Seungjoo Kim, Dongho Won
Abstract:A group key agreement protocol is designed to efficiently
implement secure multicast channels for a group of parties
communicating over an untrusted, open network by allowing them to
agree on a common secret key. In the past decade many problems
related to group key agreement have been tackled and solved
(diminished if not solved), and recently some constant-round
protocols have been proven secure in concrete, realistic setting.
However, all forward-secure protocols so far are still too
expensive for small mobile devices. In this paper we propose a new
constant-round protocol well suited for a mobile environment and
prove its security under the Decisional Diffie-Hellman assumption.
The protocol meets simplicity, efficiency, and all the desired
security properties.
ePrint: https://eprint.iacr.org/2004/127
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