3dpassword.pptx

7/28/2019 3dpassword.pptx

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3-D Password Scheme

For more secure authentication

Name: Rahul BanghaSemester:8thBranch: Computer ScienceEnrollment No: SGVU091083096Suresh Gyan Vihar University


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Authentication

Authentication is a process of validatingwho are you to whom you claimed to be

Human authentication techniques are as

follows:1. Knowledge Base (What you know)

2. Token Based(what you have)

3. Biometrics(what you are)

4. Recognition Based(What you recognise)


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Common Authentication

Techniques used in computerworld1. Textual Passwords(Recall Based)-:Recall

what you have created before.


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2. Graphical Passwords:

(Recall Based+Recognition Based)

Biometric schemes

(fingerprints,voice recognition etc)


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Drawbacks

Textual Password: Textual Passwords should be easy to

remember at the same time easy to guess

Full password space for 8 characters

consisting of both numbers and characters is2 X 10

From an research 25% of the passwords outof 15,000 users can guessed correctly by

using brute force dictionary


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Drawbacks

Graphical Password Graphical passwords can be easily

recorded as these schemes take a longtime.

One main drawback of applying biometricis its intrusiveness upon a users personnelcharacteristics.

They require special scanning device to

authenticate the user which is notacceptable for remote and internet usersnormally.


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3D PASSWORD SCHEME

The 3D Password scheme is a newauthentication scheme that combine

RECOGNITION

+ RECALL

+TOKENS

+BIOMETRIC

In one authentication system


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The 3D password presents a virtualenvironment containing various virtual

objects.

The user walks through the environment

and interacts with the objects

The 3d Password is simply thecombination and sequence of user

interactions that occur in the 3Denvironment


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3D Password selection

Virtual objects can be any object weencounter in real life:

A computer on which the user can type

A fingerprint reader that requires users fingerprint

A paper or white board on which user can typeA Automated teller(ATM) machine that requires a token

A light that can be switched on/off

A television or radio

A car that can be driven

A graphical password scheme


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For EXAMPLE:

Let us assume the user enters a virtual

office then performs the following action: (10,24,91) Action=Open office door

(10,24,91) Action=Close office door

(4,34,18) Action=Tpeine,C

(4,34,18) Action=Typing,O

(4,34,18)Action=Typing,N

(10,24,80)Action=Pick up the pen

(1,18,80)Action=Draw point=(330,130)


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3D Passwords Differentiators

Flexibility:3D Passwords allows Multifactorauthentication biometric , textual passwordscan be embedded in 3D password technology.

Strength: This scenario provides almostunlimited passwords possibility.

Ease to Memorize: can be remembered in theform of short story.

Respect of Privacy: Organizers can selectauthentication schemes that respect usersprivacy.


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3D Password Application Areas

Critical Servers

Nuclear and military Facilities

Airplanes and JetFighters

ATMs,Desktop and Laptop Logins, WebAuthentication


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Attacks and Countermeasures

Brute Force Attack: The attack is very difficultbecause

1. Time required to login may vary form 20s

to 2 min therefore it is very timeconsuming.

2. Cost of Attack: A 3D Virtual environmentmay contain biometric object ,the attackerhas to forge all biometric information.


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Attacks and Countermeasures Well Studied Attack: Attacker tries to get

the most probable distribution of 3D

Password. This is difficult becauseattacker has to perform customized attackfor different virtual environment .


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Shoulder Surfing Attacks: Attacker usescamera to record the users 3D passwords. This

attack is more successful.

Timing Attack: The Attacker observes howlong it takes the legitimate user to performcorrect log in using 3D Password. Which gives anindication of 3-D Passwords length. This attackcannot be successful since it gives the attacker

mere hints.


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QUERIES ??...

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3dpassword.pptx