14-01-2013, 04:13 PM
Graphical Passwords
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Introduction
Now a days, Information Security is
the most describing problem
Informations stored in the databases
are much precious for the user
To cop up with the security of the
Informations, the passwords were
introduced
Thus the password is the benchmark
that checks the authentication/role of
the user in that database
Authentication Methods
Token based authentication
Key cards, band cards, smart card, …
Biometric based authentication
Fingerprints, iris scan, facial recognition, …
Knowledge based authentication
Text-based passwords, picture-based
passwords, …
Most widely used authentication
techniques
Requirements of a password
Passwords should be easy to
remember
Should be quickly and easily
executable
Should be secure
Should look random and should be
hard to guess
Should be changeable
An alternative: Graphical
Passwords
Graphical passwords may be a solution to
the text based password vulnerabilities.
The idea of graphical passwords was
pioneered by Greg Blonder who also holds
the US patent 5559961
A graphical password is a secret that a
human user inputs to a computer with the
aid of the computers’ graphical input (e.g.,
mouse, stylus, or touch screen) and output
devices.
PASS FACES
Passfaces (formerly known as Real
User Corporation) is an information
security technology company based
in Annapolis, Maryland.
Commercial application leverages
the brain’s innate cognitive ability to
recognize human faces.
Conclusion
Main argument for graphical
passwords:
people are better at memorizing graphical
passwords than text-based passwords
It is more difficult to break graphical
passwords using the traditional
attack methods such as : brute force
search, dictionary attack or spyware.
Not yet widely used, current
graphical password techniques are
still immature