Cryptanalysis of Password Authenticated Key Exchange Based on RSA for Imbalanced Wireless Networks
Eun‐Jun Yoon · IEICE Transactions on Communications · 2005
Recently, Yeh et al. proposed an improvement on Zhu et al.'s password based authenticated key exchange protocol based on RSA, in order to make the protocol withstand undetectable on-line password guessing attacks and also to provide explicit key authentication. The improved scheme, however, is still susceptible to off-line password guessing attacks. Accordingly, the current letter demonstrates the vulnerability of Yeh et al.'s scheme regarding off-line password guessing attacks.