06-03-2013, 12:40 PM
DEFENSES AGAINST LARGE SCALE ONLINE PASSWORD GUESSING ATTACKS BY USING PERSUASIVE CLICK POINTS
GUESSING ATTACKS.docx (Size: 15.16 KB / Downloads: 27)
ABSTRACT
Usable security has unique usability challenges because the need for security often means that
standard human-computer-interaction approaches cannot be directly applied. An important usability goal
for authentication systems is to support users in selecting better passwords. Users often create memorable
passwords that are easy for attackers to guess, but strong system-assigned passwords are difficult for users
to remember. So researchers of modern days have gone for alternative methods wherein graphical
pictures are used as passwords. Graphical passwords essentially use images or representation of images as
passwords. Human brain is good in remembering picture than textual character. There are various
graphical password schemes or graphical password software in the market. However, very little research
has been done to analyze graphical passwords that are still immature. There for, this project work merges
persuasive cued click points and password guessing resistant protocol. The major goal of this work is to
reduce the guessing attacks as well as encouraging users to select more random, and difficult passwords
to guess. Well known security threats like brute force attacks and dictionary attacks can be successfully
abolished using this method.
EXISTING SYSTEM
In existing system,password are mostly of text oriented.So the password can be broken by intruders by masquerading,brute force attack,dictionary attack etc.,There are some application existing with graphical passwords,their major drawback is larger memory space.Some have prone to shoulder surfing attack.In Cued Click Point,the user have select click point in five different images in sequence based on the previous image.The drawback of the concept is it is difficult to remember the click points in different images.
PROPOSED SYSTEM
In proposed system, we use a click-based graphical password system. During password
creation, there is a small view port area that is randomly positioned on the image. Users must
select a click-point within the view port. If they are unable or unwilling to select a point in the
current view port, they may press the Shuffle button to randomly reposition the view port. The
view port guides users to select more random passwords. Therefore this works encouraging users to select more random, and difficult passwords to guess.