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Remarks on the Unknown Key Share Attacks

Joonsang BAEK, Kwangjo KIM

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Summary :

This letter points out some flaws in the previous works on UKS (unknown key-share) attacks. We show that Blake-Wilson and Menezes' revised STS-MAC (Station-to-Station Message Authentication Code) protocol, which was proposed to prevent UKS attack, is still vulnerable to a new UKS attack. Also, Hirose and Yoshida's key agreement protocol presented at PKC'98 is shown to be insecure against public key substitution UKS attacks. Finally, we discuss countermeasures for such UKS attacks.

Publication
IEICE TRANSACTIONS on Fundamentals Vol.E83-A No.12 pp.2766-2769
Publication Date
2000/12/25
Publicized
Online ISSN
DOI
Type of Manuscript
LETTER
Category
Information Security

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