Visual Cryptography and Secret Image Sharing

12

Applications of Visual Cryptography

Bernd Borchert and Klaus Reinhardt

Universität Tühingen, Germany

CONTENTS

12.1 Introduction

12.2 Trojan-Secure Confirmation of Transactions

12.3 Trojan-Secure Authentication Using a PIN

12.4 Security versus Multiple Use

12.5 Using Refraction

12.6 Technical Problems Concerning Adjustment and Parallaxes

12.7 Voting with a Receipt Based on visual cryptography

12.8 Conclusion

Bibliography

12.1 Introduction

Naor and Pinkas in their seminal paper [13] suggested to use visual cryptography in a transparency-on-screen version. Their main purpose was authentication, in the sense that an online server is able to authenticate itself to a user sitting in front of the screen. Implicitly, this already suggests ...