Secure Password-based Authenticated Group Key Agreement for Data-Sharing Peer-to-Peer Networks

Tang, Qiang & Choo, Kim-Kwang R. (2006) Secure Password-based Authenticated Group Key Agreement for Data-Sharing Peer-to-Peer Networks. In Zhou, Jianying & Yung, Moti (Eds.) 4th International Conference on Applied Cryptography and Network Security (ACNS'06), 6~9 June 2006, Singapore.

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We explore authenticated group key agreement in data-sharing Peer-to-Peer networks. We first propose a novel password-based authenticated group key agreement protocol with key confirmation. We present a formal statement of its security in a variant of the Bresson et al. security model adapted for the password-based setting. A discussion of the limitations of our protocol in the case where the group size becomes large is then presented. We conclude the paper with an enhanced version of the protocol, using a CAPTCHA technique, designed to make it more robust against online password guessing attacks.

Impact and interest:

10 citations in Scopus
8 citations in Web of Science®
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539 since deposited on 07 Apr 2006
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ID Code: 3835
Item Type: Conference Paper
Refereed: Yes
Keywords: P2P network, key agreement, provable security, CAPTCHA
DOI: 10.1007/11767480_11
ISSN: 1611-3349
Subjects: Australian and New Zealand Standard Research Classification > INFORMATION AND COMPUTING SCIENCES (080000)
Divisions: Past > QUT Faculties & Divisions > Faculty of Science and Technology
Copyright Owner: Copyright 2006 Springer
Copyright Statement: This is the author-version of the work. Conference proceedings published, by Springer Verlag, will be available via SpringerLink. Lecture Notes in Computer Science
Deposited On: 07 Apr 2006 00:00
Last Modified: 03 Mar 2011 05:41

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