This document discusses graphical passwords as an alternative authentication method to text passwords. It provides an introduction to graphical passwords, outlines the registration and login processes, and categorizes different graphical password schemes such as recognition-based, recall-based, and draw-based techniques. The document also covers security attacks on graphical passwords, advantages like improved usability and security, and disadvantages including longer login times and increased storage needs compared to text passwords.

1. Graphical Password
Authentication
Submitted to:- Submitted by:-
Prof.Rittu Sharma Amandeep Kaur
Computer Department Msc IT 2nd sem
Roll no- 3014
Pupin no- 35412

2. Table of Contents
Introduction
Use of Graphical password
Registration Phase
Categories
Security Attacks
Advantages
Disadvantages
Conclusion

3. Introduction
Graphical password were originally described by BLONDER
in 1996.
A graphical password is an authentication system that works
by having the user select from images, in a specific
orde,presented in graphical user interface (GUI).
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4. Use of graphical password
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5. Registration Phase
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6. Categories of Graphical
Passwords
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7. Recognition Based Techniques
In this category, users will select images, icons or symbols from a
collection of images. At the time of authentication, the users need to
recognize their images, symbols or icons which are selected at the
time of registration among a set of images.
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8. Dhamija and Perrig scheme
Deja vu was proposed by Dhamija where users select a specific
number of random art images from a set of images generated by
a program in the registration phase.
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9. Passface Scheme
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10. Recall Based Tecniques
A user is asked to reproduce something that he created or
selected earlier during the registration.
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11. Signature schema
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12. Draw-A-secrt(DAS)schema
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13. SECURITY ATTACKS
Dictionary Attack
Guessing Attack
Shoulder Surfing Attack
Spyware Attack
Social Engineering Attack
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14. Advantage
 Human friendly passwords.
 Security.
Select images on screen pages.
Dictionary attacks.
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15. Disadvantage
Password registration and log in process take too long.
Require much more storage space than text based passwords.
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16. Conclusion
Graphical passwords are an alternative to textual alphanumeric
password.
It satisfies both conflicting requirements.
It become more secure and easier password scheme.
Current graphical password techniques are still immature.
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