Security weakness of Tseng's fault-tolerant conference-key agreement protocola
SCIE
SCOPUS
- Title
- Security weakness of Tseng's fault-tolerant conference-key agreement protocola
- Authors
- Lee, S; Kim, J; Hong, SJ
- Date Issued
- 2009-07
- Publisher
- ELSEVIER SCIENCE INC
- Abstract
- A fault-tolerant conference-key agreement protocol establishes a shared key among participants of a conference even when some malicious participants disrupt key agreement processes. Recently, Tseng proposed a new fault-tolerant conference-key agreement protocol that only requires a constant message size and a small number of rounds. In this paper, we show that the Tseng's protocol cannot provide forward and backward confidentiality during a conference session for the proposed attack method. We also show that a simple countermeasure-re-randomizing short-term keys of some participants-to avoid the proposed attack can be broken by extending the proposed attack method. (C) 2009 Elsevier Inc. All rights reserved.
- Keywords
- Network-based conference; Fault-tolerant key agreement; Forward/backward confidentiality; Security attack; DISTRIBUTION-SYSTEM; EXCHANGE; SECRECY
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/26136
- DOI
- 10.1016/j.jss.2009.02.006
- ISSN
- 0164-1212
- Article Type
- Article
- Citation
- JOURNAL OF SYSTEMS AND SOFTWARE, vol. 82, no. 7, page. 1163 - 1167, 2009-07
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