Implementing CHC to Counter Shoulder Surfing Attack in PassPoint ? Style Graphical Passwords
Journal: International Journal of Advanced Networking and Applications (Vol.2, No. 06)Publication Date: 2011-05-02
Authors : M. Joshuva; T. Sudha Rani; M. Samuel John;
Page : 906-910
Keywords : Authentication; Convex Hull Click Scheme; Graphical Passwords; PassPoint System; Shoulder Surfing;
Abstract
Graphical passwords are an alternative to existing alphanumeric passwords. In Graphical passwords users click on images than type a long, complex password. Passpoints scheme is one of the Graphical user authentication techniques. In this method the password is represented by multiple clicks on a single image. One of the advantages with Passpoints scheme is that, a user can click on any place in the image as a click point. Graphical authentication suffers a major drawback of Shoulder-surfing.
Shoulder-surfing refers to someone observing the user’s action as the user enters a password. Due to this, the user’s action can be monitored by the attacker or it can be captured using recording devices such as camera. Sobrado and Birget suggested Convex Hull Click (CHC) scheme to counter shoulder-surfing using PassIcons which is different from PassPoint scheme. In this paper, we described how CHC is implemented in Passpoint-sheme to counter Shoulder Surfing Attack.
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