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Bulletin of Electrical Engineering and Informatics

Efficient Three Party Key Exchange Protocol

Qingchao Yang, Jingjun Lou, Shuyong Liu, Aimin Diao

Published Sep 1, 2012• 0 citations
Publisher
DOI
10.12928/eei.v1i3.461

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Three-party authenticated key exchange protocol (3PAKE) is an important cryptographic technique for secure communication which allows two parties to agree a new secure session key with the help of a trusted server. In this paper, we proposed a new three-party authenticated key exchange protocol which aims to achieve more efficiency with the same security level of other existing 3PAKE protocols. Security analysis and formal verification using AVISPA tools show that the proposed protocol is secure against various known attacks. Comparing with other typical 3PAKE protocols, the proposed protocol is more efficient with less computation complexity.
The authentication key exchange protocol enables communication participants to authenticate each other and agree on the session key over an insecure public network. Recently, a three-party authentication key exchange protocol based on Elliptic curve cryptograph is proposed. In this paper, we improve the three-party encrypted key exchange protocol by bilinear maps. The proposed threeparty authentication key exchange protocol is provable secure under Computational Diffie-Hellman assumptions in the standard model. Furthermore, the novel protocol is more efficient.