Passwords.pdf (197.56 kB)
Security of group key exchange protocols with different passwords
conference contribution
posted on 2009-12-17, 09:59 authored by Raphael C.-W. PhanPassword-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.
History
School
- Mechanical, Electrical and Manufacturing Engineering
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. 147-152Publisher
© IEEEVersion
- VoR (Version of Record)
Publication date
2009Notes
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.ISBN
9781424439997Language
- en