Cryptanalysis of Yang-Li-Liao's Simple Three-Party Key Exchange (S-3PAKE) Protocol

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Provided by: World Academic Union
Topic: Security
Format: PDF
Three-party Password Authenticated Key Exchange (3PAKE) protocols are widely deployed on lots of remote user authentication system due to its simplicity and convenience of maintaining a human-memorable password at client side to achieve secure communication within a hostile network. Recently, an improvement of 3PAKE protocol by processing a built-in data attached to other party for identity authentication to individual data was proposed by some researchers. However, this paper points out that the improved 3PAKE protocol is still vulnerable to undetectable on-line dictionary attack and off-line dictionary attack.
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