2007•International Mathematical ForumOpen access

Cryptanalysis of two password-authenticated key exchange protocols between clients with different passwords

Tianjie Cao, Yongping Zhang

Abstract

In large-scale client-client communication environments, Password-Authenticated Key Exchange (PAKE) based on trusted server is very convenient in key management. For enhancing the efficiency and preventing various attacks, Wang and Mo proposed a three-PAKE protocol, Yoon and Yoo proposed a C2C-PAKE protocol. However, in this paper, we show that the Wang-Mo protocol and the Yoon-Yoo protocol exist impersonation attack.

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Available abstract

Key concepts: Password, Computer science, Key exchange, Cryptanalysis, S/KEY, Computer security, Key (lock), Authenticated Key Exchange