strong passwords such as alphanumeric or graphical passwords. Alphanumerical passwords are not more secure than graphical passwords. Hackers can easily guess the password with the help of tools such as dictionary attacks. Information security is the most important factor now a days. To provide security for the cloud we are using graphical password authentication. Graphical password is the alternative solution for alphanumeric passwords to provide more security. Graphical password are more secure than alphanumeric passwords. It is quite difficult for the users to remember the alphanumeric passwords. According to psychological studies the human mind can easily capture images than alphabets or digits. In this paper we are going to give authentication to cloud services by using graphical password authentication. We are providing an algorithm which is based on selection of username and images as a password. In this paper we are to trying to give set of images on the basis of alphabets sequence position of characters in username. In this paper we will access cloud services using graphical password authentication.

1. International Journal of Engineering and Techniques - Volume 2 Issue 3, May - June 2016
ISSN: 2395-1303 http://www.ijetjournal.org Page 1
Accessing Cloud Services Using Graphical
Password Authentication
S. A. Gade, Puja Bomble, Suraj Birdawade, Alpesh Valvi
(Computer Department, Pune University,S.V.I.T College and Nashik)
I. INTRODUCTION
In graphical password authentication process we
are going to give security to protect the cloud.
When any user wants to access the network, for
security purposes every web application provides
user authentication. Graphical password are more
secure than alphanumeric password because they
provides images as password. The resources are
rapidly deployed with great efficiency and minimal
management overhead. Cloud is an insecure
computing platform from the view point of cloud
users, the system must design mechanisms that not
only protect sensitive information by enabling
computations with encrypted data, but also protect
users from malicious behaviours. Graphical
password provide a programming alternative
traditional alphanumeric password. There are many
security issues that are arises for accessing the
services in cloud. To remove these issues the
graphical password security system is provided
with powerful and more secure authentication
techniques.
Three Types Of Authentication Methods –
A) Token base authentication: In this system user
have to enter their username and password in order
to obtain a token which allows them to fetch a
specific resources without using their username and
password once their token has been obtain. The
tokem contains the information of the user.
B) Biometric Base Authentication: This method
of authentication offers several advantages over
other authentication methods. The biometric based
authentication methods are thumb recognition, eye
recognition.
C) Knowledge Base Authentication: Most of the
web applications are the knowledge based
authentication. Graphical password authentication
is the knowledge based authentication.
In this paper we are presenting effective algorithm
which is based on selecting user names and images
as password to provide security for the cloud. We
are trying to give images as password according to
the selection of username alphabets position.
RESEARCH ARTICLE OPEN ACCESS
Abstract:
In todays modern world the need of security is increasing day by day. To provide security to the system we
need strong passwords such as alphanumeric or graphical passwords. Alphanumerical passwords are not more secure
than graphical passwords. Hackers can easily guess the password with the help of tools such as dictionary attacks.
Information security is the most important factor now a days. To provide security for the cloud we are using
graphical password authentication. Graphical password is the alternative solution for alphanumeric passwords to
provide more security. Graphical password are more secure than alphanumeric passwords. It is quite difficult for the
users to remember the alphanumeric passwords. According to psychological studies the human mind can easily
capture images than alphabets or digits. In this paper we are going to give authentication to cloud services by using
graphical password authentication. We are providing an algorithm which is based on selection of username and
images as a password. In this paper we are to trying to give set of images on the basis of alphabets sequence position
of characters in username. In this paper we will access cloud services using graphical password authentication.
Keywords - Graphical password, cloud security.

2. International Journal of Engineering and Techniques - Volume 2 Issue 3, May - June 2016
ISSN: 2395-1303 http://www.ijetjournal.org Page 2
Finally, we have provided strongest security for the
cloud.
Why Graphical Passwords ?
In this paper we are going to give images as
password for the cloud. Garphical passwords are
more secure than alphanumeric password.
According to scientifical studies human mind can
easily remember images than alphabets. Hackers
can easily guess the alphanumeric password.
Graphical passwords are not easy to guess, if the
attacker tries to guess the password it will take
millions of the years. That’s why to provide more
security for the cloud, we are using images as
password.
II. EXISITING SYSTEMS
1. Recognition based technique -
In this recognition based techniques user is
provided with collection of images, icons or
symbols. At the time of authentication user can
select images, symbols as passwords.The majority
is 90% of user to remember the password after one
or two months. Based on the Hash Visualization
technique Dhamija and Perrig proposed a graphical
authentication scheme. In which user have to select
no of images from the set of images generated by
the algorithm. Below figure shows the random
images.
Fig. 1 Recognition Based
2. Multiple Image Based
In this multiple image based technique user is
provide multiple images to select any one of them.
Passface is a technique developed by Real user
corporation. The password is the collection of k
faces ,each selected from a distinct set of n>1
faces.We used k=4 and n=9. choosing her password
images are unique and do not appear more than
once. A password is a sequence of k unique images
selected by the user to make a story from a single
set of n>k images, each derived from a distinct
category of images types.
Fig. 1 Passface
Advantages –
1. User can easily remember password.
Disadvantages –
1. It is very long process for selection of
images as password.
2. Require more time.
3. Triangle Based Scheme
In triangle based scheme the user is provided with
crowded images. From that images or symbols user
has to select password as forming triangle. It is very
hard to guess the password from crowded hall of
images.

3. International Journal of Engineering and Techniques - Volume 2 Issue 3, May - June 2016
ISSN: 2395-1303 http://www.ijetjournal.org Page 3
Fig. 3 Triangle Based Scheme
Advantages –
1. The display is very crowded so no one can
easily guess the password.
2. No of image shown are almost same so,it is
difficult to distinguish.
Disadvantages –
Convex surface assigning process takes longer
time.
III. PROPOSED SYSTEM:
Proposed system of our project will be explained in
detail with the help of following few steps.
Step 1: How to start: when any user wants to start
the cloud service they will be provided with options
to select username and password. If the user is new,
user have to create its username. According to that
username selection images are provided as
password. After login into account user can access
cloud services.
Step 2: Calculations on the basis of username
There are total 26 alphabets in the alphabets series.
At the server-side position of username’s alphabet
in alphabet series will be calculated. After that the
addition of all the position is done. First digit of that
sum will be considered and forwarded further
calculations.
Example: Username is ‘SVIT’.
Finding the set to be assigned
This first digit is 7, forwarded for next calculation.
Step 3: Assigning set of images:
There are total 26 alphabets present in alphabet
series. We know that any two digit number can start
with number between 1-9 itself. That’s why Server
has made 9 set of images. According to the
username the set of images are assigned.
A B C D E F G H I
1 2 3 4 5 6 7 8 9
According to username if the first digit is 1,then set
A is assigned.
Step 4: Selection of password:
The last step is selection of password, complete
password is divided in two sections first section is
based on user selection, second section is based on
server provide images. For user selection server
provided set of images using the first digit of
calculation of usernames position. Using this set of
image user can select any two image as a password
and after user selection server provide another two
image to user and password complete.
Flowchart of Proposed System:
In this method registration process is first and
important process. In registration process there are
two main process required sign in and sign up.
If user in new then sign up process required and if
user is already existing then sign in process
required. In sign up process user have to enter its
user name first. using the calculation of position of
username server provide the image set to user. user
can select any two image from this set and another
two image will be provided by server but at
Alphabets S V I T
Position 19 22 9 20
Calculation of result: S+V+I+T=19+22+9+20=70

4. International Journal of Engineering and Techniques - Volume 2 Issue 3, May - June 2016
ISSN: 2395-1303 http://www.ijetjournal.org Page 4
registration time user cant see this two image .this
two image automatically send on users mail id. And
then registration process is completed.
After sign up process user can sign in using its
username and password. When user enter its
username then server using the position of
username provide the set of image to user. then user
select its two image password from given set and
another two images who’s send by server user can
select using browse option and then user can access
their account with uploading and downloading
process.
Fig. 4 Flowchart
COMPARISION WITH OTHER METHODS -
 Image Based Scheme Vs Graphical
Password-
 In image based scheme user can use many
images as a password or some part of
image use as a password.
 In graphical password user can use
different images as a password.
 Image based scheme is a very long process.
It consumes users time also.
 Graphical password is faster than image
based scheme.
 Triangle Scheme Vs - Graphical Password
 In triangle scheme user is provided with
convex surface. user can select any three
image from this convex surface that forming
a triangle.
 In graphical password two images select by
user and another two images provided by
server using the calculation of usernames
position.
 In triangle scheme there are many images
shown are almost same, so user may
confuse to select its password.
 In graphical password all image are
different so user can not confuse for select
its password.
 Signature Based Scheme Vs Graphical
Password-
 In signature based scheme user can use its
signature as a password.
 In graphical password user can use any
image as a password.
 Disadvantage of signature based scheme is
remembering the grid of signature is not
simple task.

5. International Journal of Engineering and Techniques
 Graphical password is easily remember. In
psychological study it is proved that
is easily capture by human brain.
IV. RESULT
Fig. 5 Result
CONCLUSION -
The new system graphical password used for
solving many problems or many drawback of
existing system. Graphical passwords provide more
security than alphanumeric passwords. Graphical
password is easy to remember.It will reduce the
burden of human brain.
REFERENCES -
[1] A Survey on Recognition-Based Graphical User Authentication
Algorithms Farnaz Towhidi Centre for Advanced Software
International Journal of Engineering and Techniques - Volume 2 Issue 3, May - June 2016
Graphical password is easily remember. In
psychological study it is proved that image
is easily capture by human brain.
The new system graphical password used for
problems or many drawback of
existing system. Graphical passwords provide more
security than alphanumeric passwords. Graphical
password is easy to remember.It will reduce the
Based Graphical User Authentication
Towhidi Centre for Advanced Software
Engineering, University Technology Malaysia Kuala Lumpur,
Malaysia
[2] Pass-Go, a New Graphical Password Scheme, HAITAO
submitted to the Faculty of Graduate and Postdoctoral
Studies Electrical and Computer Engineering University of
Ottawa© Hai Tao, Ottawa Canada, June, 2006
[3] Security Analysis of Graphical Passwords over the Alphanumeric
Passwords by G. Agarwal ,1Deptt.of Computer
Bareilly, India 2,3 Deptt. of Information Technology, IIET,
Bareilly, India 27-11-2010
[4] Graphical Passwords, FABIAN MONROSE AND MICHAEL K.
REITER, August 5, 2005
[5] A Survey on Recognition-Based Graphical User Authentication
Algorithms
[6] Authentication Using Graphical Passwords: Effects of Tolerance
and Image Choice Susan Wiedenbeck Jim Waters College of IST
Drexel University Philadelphia
[7] Design and Evaluation of a Shoulder
Password Scheme Susan Wiedenbeck an
IST Drexel University Philadelphia, PA 19104 USA
[8] ]Graphical Passwords as Browser Extension:Implementation and
Usability Study1,Kemal Bicakci1, Mustafa Yuceel1, Burak
Erdeniz2, Hakan Gurbaslar2, NartBedin Atalay3.
June 2016
Engineering, University Technology Malaysia Kuala Lumpur,
Go, a New Graphical Password Scheme, HAITAO Thesis
he Faculty of Graduate and Postdoctoral
Studies Electrical and Computer Engineering University of
Canada, June, 2006
Security Analysis of Graphical Passwords over the Alphanumeric
Passwords by G. Agarwal ,1Deptt.of Computer Science, IIET,
of Information Technology, IIET,
Graphical Passwords, FABIAN MONROSE AND MICHAEL K.
Based Graphical User Authentication
Authentication Using Graphical Passwords: Effects of Tolerance
and Image Choice Susan Wiedenbeck Jim Waters College of IST
Design and Evaluation of a Shoulder-Surfing Resistant Graphical
Password Scheme Susan Wiedenbeck and Jim Waters College of
IST Drexel University Philadelphia, PA 19104 USA
Graphical Passwords as Browser Extension:Implementation and
Usability Study1,Kemal Bicakci1, Mustafa Yuceel1, Burak
Erdeniz2, Hakan Gurbaslar2, NartBedin Atalay3.