Cryptology ePrint Archive: Report 2009/535

Weakness of a three-party password-based authenticated key exchange protocol

S. Wu

Abstract: To guarantee the quality of the growing popular communication services, quite recently, Huang presented a simple and efficient three-party password-based authenticated key exchange protocol in International Journal of Communications and Systems. In this letter, we first show her protocol is still vulnerable to a partition attack (offline dictionary attack), by which the adversary can easily determine the correct password.

Category / Keywords: cryptographic protocols / password-based; authenticated key exchange;

Date: received 4 Nov 2009, withdrawn 3 Jul 2010

Contact author: pqywsh at gmail com

Available formats: (-- withdrawn --)

Version: 20100704:005826 (All versions of this report)

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