Password is the security primitives used for proving a user identity in online. Many graphical password techniques have been proposed which is used to improve password usability and security. In this paper, we present a Captcha as gRaphical Password (caRP) technique. caRP is used to resolve most of the security issue in graphical password such as online dictionary attacks, relay attacks, shoulder surfing attacks. caRP provide new approach that address image hotspot problem which is encountered in graphical password by generate new image for each login user. User authentication has been important for security. To make secure user friendly graphical password, we use randomized image password. Randomize Image Position(RIP)randomized the visual image position of visual object. To build up the security in graphical password it combines RIP and caRP. In this stage, we introduce Quick Response (QR)login mechanism to improve the security scheme. It helps the user to securely access his account in an unsecured environment. QR means quick search and it transfer a piece of information from the transitory media to your mobile device.This scheme offers better security and well suitable for many applications..
Authors: R.Bhavani, R.Anitha
Article : Randomized Image Password and a QR Code Based Circumnavigation Mechanism for Secure Authentication using caRP
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