Graphical User Authentication

Abstract

The most common computer authentication method is to use alphanumerical usernames and passwords. This method has been shown to have significant drawbacks. A graphical based password is one promising alternatives of textual passwords. According to human psychology, humans are able to remember pictures easily. Recently, E-transactions have become an important tool to carry out financial transactions besides the orthodox banking transactions. They are increasingly being used to make payments, access bank accounts and facilitate other commercial transactions. In view of their increased importance there is a compelling need to establish ways to authenticate user during E-transactions. In this paper, we have proposed a new hybrid graphical password based system, which is a combination of recognition and recall based techniques that offers many advantages over the orthodox authentication system and may be more convenient for the user. Our scheme is resistant to Phishing attack and many other attacks on graphical passwords. This scheme is proposed for E-transactions used to make payments and commercial transactions etc.