CAPTCHA as Graphical Password: A Novel Approach to Enhance the Security in WWW

Abstract—This research aims to study the existing password scheme and to design and develop a new improved graphical password scheme. A novel protection primitive is presented in view of strong AI problems namely a new family of graphical password scheme built up on top of captcha technology, which we call Captcha as graphical password (CaRP). CaRP is both a captcha and graphical password scheme. CaRP addresses number of security issues altogether for example, online guessing attacks, relay attacks and if combined with dual-view technologies shoulder-surfing attacks. CaRP likewise offers a novel way to deal with address the notable image hotspot problem in well-known graphical password systems for example, Pass Points.

Keywords— CaRP; Captcha; Graphical password; Securities

INTRODUCTION

Presently a days, validation is the central procedure to ensure data security and the most widely recognized and simplest strategy is password authentication [1]. Conventional alphanumeric passwords are series of letters and digits, which are simple and natural to all clients. Nonetheless, there are a few inborn imperfections and lacks in alphanumeric passwords, which effectively advance into security issues. Today clients have numerous passwords for PCs, informal communities, E-mail and so on. They may choose to utilize one secret word for all frameworks to diminish the memory load, which decreases security [2, 3]. Alphanumeric passwords are defenseless against shoulder surfing attack, spyware attack and social engineering attack and so on. Propelled by the guarantee of enhanced secret word ease of use and security, the idea of graphical passwords was proposed in 1996 [4].The primary objective of graphical passwords is to utilize pictures or shapes to supplant content, since various intellectual and mental reviews exhibited that individuals perform far superior when recollecting pictures than words. Our own reports or passwords are hacked by the third individual normally called programmers. There are distinctive courses for giving security. Here what we presented is one of the techniques for the security reason. Another insurance primitive is demonstrated in light of hard AI inconveniences, to be specific, another group of graphical password scheme based on top of Captcha innovation, which is known as Captcha and Graphical Password (CaRP).
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