An efficient ID-based authenticated key agreement protocol with pairings

Abstract

In 2003, Shim proposed an efficient ID-based authenticated key agreement protocol based on Weil pairings [1]. Sun et al. raised the potential of a man-in-the-middle attack in [2], In 2004, Ryu et al. proposed an efficient ID-based authenticated key agreement protocol from pairings [3], In 2005, however, Boyd et al. noted security problems of Ryu et al.'s protocol in [4]. In 2005, Yuan et al. also pointed out the same weakness [5] in Ryu et al.'s protocol. Then, they proposed a new protocol that combines Ryu et al.'s protocol with Shim's protocol. In this paper, we demonstrate that Shim's protocol does not provide KGC forward secrecy, then we propose a more efficient and secure protocol which does provide such security. As a result, our protocol does not need an additional ECC point-addition unlike Yuan et al.'s protocol and our's can generate two secure session key to perform the secure message transmission. © Springer-Verlag Berlin Heidelberg 2007.