K.P. Vignesh Kumar, M. Sivakumar, S N S College of Engineering, Coimbatore, Tamilnadu, India.
DOI : 01.0401/ijaict.2014.02.15
International Journal of Advanced Information and Communication Technology
Received On : January 12, 2015
Revised On : February 23, 2015
Accepted On : March 12, 2015
Published On : April 05, 2015
Volume 02, Issue 04
Pages : 254-258
Abstract
Visual cryptography (VC) is a method of encrypting a secret image into shares such that stacking a sufficient number of shares reveals the secret image. Shares are usually presented in transparencies. Each participant holds a transparency. Most of the previous research work on VC focuses on improving two parameters: pixel expansion and contrast. In this paper, we studied the cheating problem in VC and extended VC. We considered the attacks of malicious adversaries who may deviate from the scheme in any way. We presented three cheating methods and applied them on attacking existent VC or extended VC schemes. We improved one cheat-preventing scheme. We proposed a generic method that converts a VCS to another VCS that has the property of cheating prevention. The overhead of the conversion is near optimal in both contrast digression and pixel expansion.
Keywords
Visual Cryptography, Pixel Expansion, Contrast Digression, Transparencies, VC Schemes.
Cite this article
K.P. Vignesh Kumar, M. Sivakumar, “Data Embedding Method Using Visual Cryptography” INTERNATIONAL JOURNAL OF ADVANCED INFORMATION AND COMMUNICATION TECHNOLOGY, pp.254-258, April 05, 2015.
Copyright
© 2015 K.P. Vignesh Kumar, M. Sivakumar. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.