Abstract :
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 [1]. 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
[2]. 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 of
RIP password 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.
Keyword :
Graphical Password; Security Primitive; Randomized Image Password.