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Security and Communication Networks

Efficient three‐party encrypted key exchange using trapdoor functions

Tian‐Fu Lee, I‐Pin Chang, Ching‐Cheng Wang

Published Feb 28, 2013• 3 citations
Publisher

Abstract

ABSTRACT Three‐party encrypted key exchange (3PEKE) enables two communicating parties to securely exchange confidential and authenticated information over an insecure network via a trusted server. This investigation presents a novel efficient and secure 3PEKE protocol using a super‐poly‐to‐one trapdoor function. The proposed protocol employs the Diffie–Hellman key exchange and adopts the technique that the clients can publicly exchange the factors for generating the session key without the help of the server to reduce the numbers of transmissions. A round‐efficient version of the proposed 3PEKE protocol is also described. Compared with related approaches, the proposed protocol not only retains security requirements and possesses lower computational cost but also has fewer transmissions and realizes the lower bounds of communications. Copyright © 2013 John Wiley & Sons, Ltd.

DOI
10.1002/sec.717

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ABSTRACT Three‐party encrypted key exchange (3PEKE) enables two communicating parties to securely exchange confidential and authenticated information over an insecure network via a trusted server. This investigation presents a novel efficient and secure 3PEKE protocol using a super‐poly‐to‐one trapdoor function. The proposed protocol employs the Diffie–Hellman key exchange and adopts the technique that the clients can publicly exchange the factors for generating the session key without the help of the server to reduce the numbers of transmissions. A round‐efficient version of the proposed 3PEKE protocol is also described. Compared with related approaches, the proposed protocol not only retains security requirements and possesses lower computational cost but also has fewer transmissions and realizes the lower bounds of communications. Copyright © 2013 John Wiley & Sons, Ltd.
Recently, Chen et al. proposed a three-party encrypted key exchange (3PEKE) protocol with password authentication which is called CCLC-3PEKE. The protocol simultaneously possesses round and computation efficiencies. However, the protocol is vulnerable to replaying attacks. Since the protocol is currently one of the most superior of all 3PEKE protocols, it seems valuable to remedy the security weakness and enhance their efficiency. Hence, we shall propose an efficient 3PEKE (L-3PEKE) scheme. Compare with other 3PEKE protocols, our proposed L-3PEKE is more secure and efficient.
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.
Abstract Since the introduction of extended Canetti–Krawczyk (eCK) security model for two‐party key exchange, many protocols have been proposed to provide eCK security. However, most of those protocols are provably secure in the random oracle model or rely on special design technique, which is well known as the NAXOS trick. In contrast to previous schemes, we present an eCK secure protocol in the standard model, without NAXOS trick and without knowledge of secret key assumption for public key registration. The security proof of our scheme is based on standard pairing assumption, collision‐resistant hash functions, Bilinear Decision Diffie–Hellman and Decision Linear Diffie–Hellman assumptions, and pseudo‐random functions with pairwise independent random source. Although our proposed protocol is based on bilinear groups, it does not require any pairing operation during key exchange procedure. Copyright © 2014 John Wiley & Sons, Ltd.
Authenticated key exchange protocols have an important role for building secure communications amongst two or more entities over the networks. Two party authenticated key exchange protocols where each pair of parties must share a secret with each other; a three-party protocol does not cause any key management problem for the parties. In this paper, an extension of two-party key exchange protocol, which is based on Diffie-Hellman key exchange. is proposed. In this protocol each user exchanges secret key with server then each user uses this secret key to exchange session key with each other. The efficiency and the security analysis of this new key exchange protocol are proven in this paper.
Abstract ID‐based one‐pass authenticated key exchange protocol allows the sender Alice to generate a session key without interacting with receiver Bob. As a result, it is better suitable for some application scenarios than the two‐pass counterpart. However, currently there are few ID‐based one‐pass authenticated key exchange protocols with a security proof in a formal model. The paper investigates the ID‐based one‐pass authenticated key exchange protocol in the enhanced Canetti–Krawczyk (eCK) model. We propose a new ID‐based one‐pass authenticated key exchange protocol IDOAKE, which is shown secure under Bilinear Diffie–Hellman (BDH) assumption in the eCK model. To the best of our knowledge, our protocol is the first provably secure ID‐based one‐pass authenticated key exchange in the eCK model. Copyright © 2010 John Wiley & Sons, Ltd.