The Importance of Proofs of Security for Key Establishment Protocols: Formal Analysis of Jan-Chen, Yang-Shen-Shieh, Kim-Huh-Hwang-Lee, Lin-Sun-Hwang, and Yeh-Sun Protocols
Choo, Kim-Kwang R., Boyd, Colin A., & Hitchcock, Yvonne (2006) The Importance of Proofs of Security for Key Establishment Protocols: Formal Analysis of Jan-Chen, Yang-Shen-Shieh, Kim-Huh-Hwang-Lee, Lin-Sun-Hwang, and Yeh-Sun Protocols. Computer Communications, 29(15), pp. 2788-2797.
Despite the importance of proofs in assuring protocol implementers about the security properties of key establishment protocols, many protocol designers fail to provide any proof of security. Flaws detected long after the publication and/or implementation of protocols will erode the credibility of key establishment protocols. We revisit recent work of Choo, Boyd, Hitchcock, & Maitland (2004) where they utilize the Bellare, Pointcheval, & Rogaway (2000) computational complexity proof model in a machine specification and analysis (using an automated model checker -- SHVT) for provably-secure key establishment protocol analysis. We then examine several key establishment protocols without proofs of security, namely: protocols due to Jan & Chen (2004), Yang, Shen, & Shieh (1999), Kim, Huh, Hwang, & Lee (2004), Lin, Sun, & Hwang (2000), and Yeh & Sun (2002). Using these protcols as case studies, we demonstrate previously unpublished flaws in these protocols. We may speculate that such errors could have been found by protocol designers if proofs of security were to be constructed, and hope this work will encourage future protocol designers to provide proofs of security.
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|Item Type:||Journal Article|
|Keywords:||Formal specification, mutual authentication and key establishment protocols, provable security|
|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 Elsevier|
|Copyright Statement:||Reproduced in accordance with the copyright policy of the publisher.|
|Deposited On:||16 May 2005|
|Last Modified:||29 Feb 2012 23:18|
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