Cryptanalysis of Qu’s Improved Smart Card-based Remote User Authentication Scheme
نویسنده
چکیده
In 2013, Qu demonstrated that Awasthi et al.’s remote user authentication scheme is vulnerable to smart card loss attack, off-line password guessing attack and does not preserve anonymity of user. However, this paper points out that Qu’s scheme is still vulnerable to off-line password guessing attack and smart card loss attack, and also does not preserve anonymity of a user unlike its claim. For this reason, Qu’s scheme is insecure for practical application.
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