CONTENTS Introduction

Authentication Schemes

Functionalities Required

3D Password selection and Input

Virtual Environment Design Guidelines

Applications

Security Analysis

Attacks and Countermeasures

Conclusion

INTRODUCTION

Commonly used authentication schemes are textual passwords, graphical passwords and biometrics.

3D password is a multifactor authentication scheme.

AUTHENTICATION SCHEMES

KNOWLEDGE BASED Recall basedRecognition based

TOKEN BASEDeg : smart card

BIOMETRIC BASEDFingerprint ,palm prints ,hand geometry ,face

recognitionIntrusiveness upon a user’s personal

characteristics.GRAPHICAL PASSWORDS

Recognition basedRecall based

Virtual Computer where user typing a textual password as a part of user’s 3D Password

Snapshot of a proof-of-concept virtual art gallery

APPLICATIONS

Critical servers.

Nuclear and military facilities.

Airplanes and jetfighters.

ATMs, PDA’s, desktop computers and laptops.

SECURITY ANALYSIS

3D Password Space Size.

3D Password Distribution Knowledge.

CONCLUSIONCommonly used authentication schemes are

vulnerable to attacks.3D Password is a multifactor authentication

scheme.Design of 3D virtual environment, selection

of objects inside the environment, and the object type reflects the resulted password space.

User’s choice and decision to construct the desired and preferred 3D password