MULTIPLE AUTHENTICATIONS IN A SYSTEM USING GRAPHICAL PASSWORD

Abstract

Graphical passwords give a promising
option to conventional alphanumeric passwords.
They are attractive since people usually
remember pictures better than words. This
paper proposes a password security system that
allows the host not to store the passwords of its
users at its end. Instead, it creates and stores an
encrypted derivative of the password and a
secret key with the help of images selected by
the user during the user creation process.
During the login attempts of users, the user is
required to enter the password and secret key to
select the same images. The proposed system
verifies if the imaged during login matches with
the original image that was provided during
user creation by comparing their pixel
information. Then, the system derives the
password and secret key from the images with
the help of the stored derivative. Then, the
derived password is matched with the password
entered by the user.