Abstract
The smart card-based user authentication scheme is a simple and user-friendly scheme, which establishes the secure and authorized communication over the open channel. In this paper, we have intimated an efficient remote user authentication scheme for the multiserver environment. Many password-based authentication schemes have been suggested for the multiserver environment using the smart card. We have analyzed Lee et al.’s scheme and observed that this scheme could not withstand online password guessing attack and offline password guessing attack. And also, it cannot achieve session key security and mutual authentication. The suggested scheme overcomes the weaknesses of the Lee et al.’s scheme and provides more security.
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