Towards a provably secure DoS-Resilient key exchange protocol with perfect forward secrecy

Kuppusamy, Lakshmi, Rangasamy, Jothi, Stebila, Douglas, Boyd, Colin, & Nieto, Juan Gonzalez (2011) Towards a provably secure DoS-Resilient key exchange protocol with perfect forward secrecy. In Bernstein, Daniel J. & Chatterjee, Sanjit (Eds.) Indocrypt 2011, Springer, Chennai, India, pp. 379-398.

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Just Fast Keying (JFK) is a simple, efficient and secure key exchange protocol proposed by Aiello et al. (ACM TISSEC, 2004). JFK is well known for its novel design features, notably its resistance to denial-of-service (DoS) attacks. Using Meadows’ cost-based framework, we identify a new DoS vulnerability in JFK. The JFK protocol is claimed secure in the Canetti-Krawczyk model under the Decisional Diffie-Hellman (DDH) assumption. We show that security of the JFK protocol, when reusing ephemeral Diffie-Hellman keys, appears to require the Gap Diffie-Hellman (GDH) assumption in the random oracle model. We propose a new variant of JFK that avoids the identified DoS vulnerability and provides perfect forward secrecy even under the DDH assumption, achieving the full security promised by the JFK protocol.

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ID Code: 47824
Item Type: Conference Paper
Refereed: Yes
Keywords: Denial of service, Meadows’ cost-based framework, Just Fast Keying, client puzzles, key agreement, perfect forward secrecy
DOI: 10.1007/978-3-642-25578-6_27
ISBN: 9783642255779
Subjects: Australian and New Zealand Standard Research Classification > INFORMATION AND COMPUTING SCIENCES (080000) > COMPUTER SOFTWARE (080300) > Computer System Security (080303)
Divisions: Past > QUT Faculties & Divisions > Faculty of Science and Technology
Past > Institutes > Information Security Institute
Copyright Owner: Copyright 2011 Springer
Copyright Statement:

This is the author-version of the work.

Conference proceedings published, by Springer Verlag, will be available via Lecture Notes in Computer Science

Deposited On: 19 Dec 2011 22:08
Last Modified: 16 Jul 2017 01:43

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