Publication Type
Conference Proceeding Article
Version
publishedVersion
Publication Date
10-2007
Abstract
Although two-party password-authenticated key exchange (PAKE) protocols have been intensively studied in recent years, group PAKE protocols have received little attention. In this paper, we propose a hierarchical group PAKE protocol nPAKE+ protocol under the setting where each party shares an independent password with a trusted server. The nPAKE+ protocol is a novel combination of the hierarchical key tree structure and the password-based Diffie-Hellman exchange, and hence it achieves substantial gain in computation efficiency. In particular, the computation cost for each client in our protocol is only O(logn). Additionally, the hierarchical feature of nPAKE+ enables every subgroup obtains their own subgroup key in the end. We also prove the security of our protocol under the random oracle model and the ideal cipher model.
Discipline
Information Security
Research Areas
Cybersecurity
Publication
Information and Communications Security: 9th International Conference, ICICS 2007, Zhengzhou, China, December 12-15: Proceedings
Volume
4861
First Page
31
Last Page
43
ISBN
9783540770480
Identifier
10.1007/978-3-540-77048-0_3
Publisher
Springer
City or Country
Berlin
Citation
WAN, Zhiguo; DENG, Robert H.; BAO, Feng; and PRENEEL, Bart.
nPAKE+: A Hierarchical Group Password-Authenticated Key Exchange Protocol Using Different Passwords. (2007). Information and Communications Security: 9th International Conference, ICICS 2007, Zhengzhou, China, December 12-15: Proceedings. 4861, 31-43.
Available at: https://ink.library.smu.edu.sg/sis_research/400
Copyright Owner and License
Publisher
Creative Commons License
This work is licensed under a Creative Commons Attribution-NonCommercial-No Derivative Works 4.0 International License.
Additional URL
https://doi.org/10.1007/978-3-540-77048-0_3