Implicit graphical password mutual authentication using mirror-image encryption

Abstract

User authentication is the most fundamental decision in designing secure systems and to organize majority of the attacks. Though alpha-numeric password and biometric based authentication methods are the most popular methods till date, they have been exposed to numerous attacks. As an alternative solution, various graphical-based password authentication schemes have been proposed. The efficiency of a graphical password is evaluated by its intensity of security and usability. Regardless of being many existing methods most were unsuccessful to accomplish both features concurrently. In this paper, we propose recognition based mutual authentication method with mirror-image encryption technique, based on images and text. The goal of this paper is to emphasize the enhancements on security and usability of existing graphical password schemes. The proposed method is resistant to most of existing attacks such as shoulder-surfing, secret camera etc.