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Computers & Electrical Engineering

Strongly secure identity-based authenticated key agreement protocols

Liang Ni, Gongliang Chen, Jianhua Li, Yanyan Hao

Published Mar 1, 2011• 39 citations
Publisher
DOI
10.1016/j.compeleceng.2011.03.001

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Authenticated multiple key agreement protocols not only allow participants to agree the multiple session keys within one run of the protocol but also ensure the authenticity of the other party.In 2011, Dehkordi et al. proposed an identity-based authenticated multiple key agreement protocol.In this paper, we demonstrate that Dehkordi et al.'s protocol is vulnerable to impersonation attacks.Furthermore, we have found that their protocol cannot provide perfect forward security or mutual security.Then we propose an identity-based authenticated multiple key agreement protocol which removes the weaknesses of the Dehkordi et al.'s protocol.Compared with the multiple key agreement protocols in the literature, the proposed protocol is more efficient and holds stronger security.
Now,most of the tripartite authenticated key agreement protocols have been proven to be insecure.We design the new identity-based tripartite authenticated key agreement protocol,it is based on the secure IBE scheme by Peng.This protocol's security based on bilinear decisional Diffie-Hellman assumption.This protocol could provide known key security,PKG forward secrecy,key-compromise impersonation resilience and unknown key-share resilience,so it's a secure tripartite authenticated key agreement protocol.