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Link to original content: https://doi.org/10.1093/IETFEC/E89-A.6.1859
IEICE Trans - Cryptanalysis on the Robust and Simple Authentication Protocol for Secure Communication on the Web

Cryptanalysis on the Robust and Simple Authentication Protocol for Secure Communication on the Web

KyungKeun LEE
YoungHo PARK
SangJae MOON

Publication
IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences   Vol.E89-A    No.6    pp.1859-1862
Publication Date: 2006/06/01
Online ISSN: 1745-1337
DOI: 10.1093/ietfec/e89-a.6.1859
Print ISSN: 0916-8508
Type of Manuscript: LETTER
Category: Information Security
Keyword: 
authentication,  password based key exchange protocol,  smart-card,  interleaving attack,  Diffie-Hellman problem,  

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Summary: 
Recently, Yoon et al. exhibited the vulnerability of the smart-card-equipped password based authentication protocol proposed by Chien et al. to the Denning-Sacco attack. Furthermore, they also pointed out that the protocol does not provide the perfect forward secrecy. Accordingly, they presented an enhanced protocol to strengthen the security. This letter, however, demonstrates an interleaving attack on the Yoon et al.'s improved protocol and also discusses how to defend the protocol from the attack presented here.

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