Visual Cryptography and Secret Image Sharing

6

XOR-Based Visual Cryptography

Daoshun Wang and Lin Dong

Tsinghua University, China

CONTENTS

6.1 Introduction

6.2 Preliminaries

6.3 Visual Cryptography Scheme Using the Polarization of Light

6.3.1 (2, n) Scheme

6.3.2 (n, n) Scheme

6.3.3 (k, n) Scheme

6.4 Visual Cryptography Scheme with Reversing

6.4.1 (k, n) VC Scheme Using Cyclic-Shift Operation

6.4.2 A Scheme for General Access Structure

6.5 Secret Sharing Scheme Using Boolean Operation

6.5.1 (2, n) Scheme

6.5.2 (n, n) Scheme

6.5.3 (k, n) Scheme

6.6 Conclusion

Bibliography

6.1 Introduction

A (k, n) visual cryptography (VC) scheme [16] is a type of secret sharing scheme with the special property that a secret image can be recovered visually by the human eye and does not require ...