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International Journal of Advancements in Computing Technology

Secure and Efficient Two-Party Identity-based Authenticated Key Agreement Protocol

Shuai Shao, Guoai Xu, Xinxin Niu

Published Jul 31, 2013• 0 citations
Publisher
DOI
10.4156/ijact.vol5.issue11.2

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A two-message two-party key agreement protocol with explicit authentication provides perfect forward secrecy. Digital signatures can usually be used as providing explicit authentication for a key agreement protocol. Shim proposed an efficient identity-based signature scheme using bilinear pairings; however, he did not give a formal security proof for it. In this paper, we present a formal security proof for Shim's signature scheme. Using Shim's signature scheme as building blocks, we propose a new two-party identity-based key agreement protocol with explicit authentication. The proposed protocol satisfies a set of desirable security properties. Compared with the related protocols, the proposed protocol has distinct advantages in terms of security and computational efficiency.
Authenticated key agreement (AKA) protocol allows two or multi-parties exchange messages, authenticate each other and establish shared session keys for later secure communications over an open network. The certificateless -based authenticated key agreement protocols combined the advantages of the traditional PKI and the identity-based cryptography. This paper analyzes a proposed AKA protocol[6] and presents a new certificateless AKA protocol. Furthermore, we examines the security of the new protocol and compare it to the existing certificateless key agreement protocols in efficiency. The new proposed scheme achieves almost all of the desired security attributes and is more practicable.