The main issues of knowledge-based authentication is Users tend to choose memorable passwords that are easy for attackers to guess but strong passwords are difficult for users to remember. An important usability goal for authentication system is to support users in selecting better passwords, thus increasing security by expanding the effective password space. This paper proposes Picture passwords, which are an alternative to alphanumeric passwords, in which users click on images/grids to authenticate themselves. Users click on one point per image for a sequence of images. The next image will be based on the previous click-point. Performance was very good in terms of speed, accuracy, and number of errors. We suggest that Cued Click Points (CCP) provides greater security because the number of images increases the workload for attackers. While increasing the number of images and number of grids the security and efficiency will be very high.
R. Shantha Selva Kumari : received her BE degree in Electronics and Communication Engineering from Bharathiyar University, in 1987 and MS degree in Electronics and Control from Birla Institute of Technology, Pilani, in 1994. She completed her PhD degree in Biosignal Processing in 2008 from Manonmanium Sundaranar University, Tirunelveli. She has 28 years of teaching experience and is currently working as Professor and Heading the Department of Electronics and Communication Engineering at Mepco Schlenk Engineering College, India. Her current research interest includes signal processing, wavelets and its applications, neural networks. She is a life member in ISTE, FIETE and CSI.
S. Viji : received her BE degree in Electronics and Communication Engineering from Kalasalingam Institute of Technology, in 2013 and doing ME in Communication Systems from Mepco Schlenk Engineering College (2014-2016).
Cued Click Point (CCP)
Picture passwords are an alternative to textual alphanumeric password. It satisfies both conflicting requirements i.e. it is easy to remember & it is hard to guess. By the solution of the shoulder surfing problem, it becomes more secure & easier password scheme. By implementing encryption algorithms and hash algorithms for storing and retrieving pictures and points, one can achieve more security Picture password is still immature, more research is required in this field. While increasing the number of images and number of grids the security will be very high and the efficiency will be 100%.
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