Cryptanalysis of Simple Authenticated Key Agreement Protocols

Chou-Chen YANG  Ting-Yi CHANG  Min-Shiang HWANG  

IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences   Vol.E87-A   No.8   pp.2174-2176
Publication Date: 2004/08/01
Online ISSN: 
Print ISSN: 0916-8508
Type of Manuscript: LETTER
Category: Information Security
cryptography,  information security,  key agreement,  key exchange,  

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In this article, we will present a modification attack and a dictionary attack to subvert the security of the Tseng scheme and the Ku-Wang scheme. As we know, no existing schemes of simple authenticated key agreement protocols can successfully withstand our modification attack.