Summary
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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, Full Text: PDF(76.9KB)>>
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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