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Auflistung nach Autor:in "Ziauddin, Sheikh"

1 - 2 von 2
  • Konferenzbeitrag
    An improved Hwang-Lee-Tang remote user authentication scheme
    (10th International Conferenceon Innovative Internet Community Systems (I2CS) – Jubilee Edition 2010 –, 2010) Ziauddin, Sheikh
    In this paper, we present a secure and efficient remote authentication scheme by improving Hwang-Lee-Tang's scheme. The security of our scheme is based on the onewayness and collision-resistance properties of the hash functions being used. The proposed scheme is able to withstand all commonly known attacks against remote authentication schemes. In addition, the scheme does not store a password table on the server, provides mutual authentication between the user and the server, does not reveal user's password to the server, allows the user to freely choose a password of her choice, and allows the user to change her password by running a simple protocol with the server.
  • Konferenzbeitrag
    SportsFaces: a graphical password system based on images of sports celebrities
    (11th International Conference on Innovative Internet Community Systems (I2CS 2011), 2011) Kalsoom, Sajida; Ziauddin, Sheikh; Tahir, Muhammad
    In many cases, human-selected text passwords are either too easy to guess or too difficult to memorize. Graphical passwords reduce the memory burden of users by replacing the task of recalling the password to that of recognizing the password. In this paper, we present a graphical password scheme based on the images of sports celebrates. Experimental evaluation shows that the retention time of the proposed SportsFaces is greater than alphanumeric password systems.