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WASE International Conference on Information Engineering

An Efficient ID-Based Authenticated Key Exchange Protocol

Xuexian Hu, Wenfen Liu, Jianhui Zhang

Published Jul 1, 2009• 4 citations
Publisher

Abstract

It's well known that the ID-based authenticated key exchange protocol is surprisingly difficult to design and prove, since it is difficult for simulator to fully support the SessionKeyReveal query without static private key. The purported security of many ID-based protocols is either based on heuristic security arguments or the protocols are proven secure in a restricted model. In this paper, we propose an efficient ID-based authenticated key exchange protocol, called EIDAKE, which is provably secure in the currently strongest AKE security model, the eCK model. The protocol achieves the efficiency of the most efficient ID-based AKE protocol in terms of exponentiation. Moreover, our protocol enjoys a simple and intuitive reduction.

DOI
10.1109/icie.2009.23

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It's well known that the ID-based authenticated key exchange protocol is surprisingly difficult to design and prove, since it is difficult for simulator to fully support the SessionKeyReveal query without static private key. The purported security of many ID-based protocols is either based on heuristic security arguments or the protocols are proven secure in a restricted model. In this paper, we propose an efficient ID-based authenticated key exchange protocol, called EIDAKE, which is provably secure in the currently strongest AKE security model, the eCK model. The protocol achieves the efficiency of the most efficient ID-based AKE protocol in terms of exponentiation. Moreover, our protocol enjoys a simple and intuitive reduction.
ID-based authenticated key exchange (ID-AKE) is a cryptographic tool to establish a common session key between parties with authentication based on their IDs. If IDs contain some hierarchical structure such as an e-mail address, hierarchical ID-AKE (HID-AKE) is especially suitable because of scalability. However, most of existing HID-AKE schemes do not satisfy advanced security properties such as forward secrecy, and the only known strongly secure HID-AKE scheme is inefficient. In this paper, we propose a new HID-AKE scheme which achieves both strong security and efficiency. We prove that our scheme is eCK-secure (which ensures maximal-exposure-resilience including forward secrecy) without random oracles, while existing schemes is proved in the random oracle model. Moreover, the number of messages and pairing operations are independent of the hierarchy depth; that is, really scalable and practical for a large-system.
ID-based authenticated key exchange (ID-AKE) is a cryptographic tool to establish a common session key between parties with authentication based on their IDs. If IDs contain some hierarchical structure such as an email address, hierarchical ID-AKE (HID-AKE) is especially suitable because of scalability. However, most of existing HID-AKE schemes do not satisfy advanced security properties such as forward secrecy, and the only known strongly secure HID-AKE scheme is inefficient. In this paper, we propose a new HID-AKE scheme which achieves both strong security and efficiency. We prove that our scheme is eCK-secure (which ensures maximal-exposure-resilience including forward secrecy) without random oracles, while existing schemes is proved in the random oracle model. Moreover, the number of messages and pairing operations are independent of the hierarchy depth; that is, really scalable and practical for a large-system.
In 2007, LaMacchia et al.proposed the extended Canetti-Krawczyk (eCK) model for authenticated key exchange (AKE) protocols. In this paper, we first modify the eCK model by adding a new query to make the adversary can reveal all ephemeral secret information. Then we propose a new efficient and strongly secure AKE protocol in the asymmetric setting, called E-NETS (enhanced NETS) protocol, and prove its security in the modified eCK (meCK) model under the random oracle assumption and the gap Diffie-Hellman assumption.
In this paper, we present a new ID-based two-party authenticated key exchange (AKE) protocol, which makes use of a new technique called twin Diffie-Hellman problem proposed by Cash, Kiltz and Shoup. We show that our scheme is secure under bilinear Diffie-Hellman (BDH) assumption in the enhanced Canetti-Krawczyk (eCK) model, which better supports the adversary's queries than previous AKE models. To the best of our knowledge, our scheme is the first ID-based AKE protocol provably secure in eCK model.
Establishing a session key (SSK) is very important for real-world deployment in open networks, which enables secure communication between remote parties. In the past, some authenticated key exchange (AKE) protocols have been proposed to generate a SSK, but the certificate management issue is inhered in the traditional public key infrastructure and must be addressed. To tackle this issue, the identity (ID)-based concept is added to AKE, called ID-AKE. Indeed, the security of the existing AKE/ID-AKE protocols is gaining increasing importance due to some new types of attacks, namely, side-channel attacks. In such attacks, adversaries could obtain secret keys’ partial information during the execution of cryptographic protocols (including AKE/ID-AKE). To withstand such attacks, many leakage-resilient ID-AKE (LR-ID-AKE) protocols resisting side-channel attacks have been proposed. However, these existing LR-ID-AKE protocols have no efficient solution to revoke compromised users. In this article, the first LR-ID-AKE protocol with an efficient revocation mechanism, called LR-RID-AKE, is proposed. The proposed protocol is not only as secure as existing LR-ID-AKE protocols but also able to efficiently revoke compromised users from the system.