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Title: Security of group key exchange protocols with different passwords
Authors: Phan, Raphael C.-W.
Keywords: Password-authenticated key exchange
Key indistinguishability
Undetectable online dictionary attack
Issue Date: 2009
Publisher: © IEEE
Citation: PHAN, R.C.-W., 2009. Security of group key exchange protocols with different passwords. IN: International Conference on Advanced Information Networking and Applications Workshops, (WAINA '09), Bradford, 26-29 May, pp. 147-152
Abstract: Password-based authenticated group key exchange protocols allow group users to jointly share a session key based on a human-memorizable password. In this paper, we present an undetectable online dictionary attack on N-EKE-D, a recent provably secure protocol designed to explicitly resist this type of attack. Thus, our result contradicts the design goal. We also give a simple attack on the key indistinguishability of N-EKE-D and two N-EKE-M variants that exploits the definition of partnering in their security model.
Description: This is a conference paper [© IEEE]. It is also available at: http://ieeexplore.ieee.org/ Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
Version: Published
DOI: 10.1109/WAINA.2009.38
URI: https://dspace.lboro.ac.uk/2134/5686
ISBN: 9781424439997
Appears in Collections:Conference Papers and Presentations (Mechanical, Electrical and Manufacturing Engineering)

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