Abstract
In multi-server environment, many authentication algorithms have been proposed. Most of the algorithms are based on registration of client and server on the single control server. Recently Gupta and Dhar (Wirel Pers Commun 87(1):225–244, 2016) proposed an authentication scheme, in which client and server belong to different control servers. According to them their proposed scheme is secured against different security attacks like—user impersonation, smart card stolen and password guessing attack. However, in this article, we have found some weaknesses of their scheme and shown that it does not provide security against denial of service attack, user impersonation and stolen smart card attack.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
