Comment on “Cheating Prevention in Visual Cryptography”

Author

Yu-Chi Chen ; Horng, Gwoboa ; Du-Shiau Tsai

Author_Institution

Dept. of Comput. Sci. & Eng., Nat. Chung Hsing Univ., Taichung, Taiwan

Volume

21

Issue

7

fYear

2012

fDate

7/1/2012 12:00:00 AM

Firstpage

3319

Lastpage

3323

Abstract

Visual cryptography (VC), proposed by Naor and Shamir, has numerous applications, including visual authentication and identification, steganography, and image encryption. In 2006, Horng showed that cheating is possible in VC, where some participants can deceive the remaining participants by forged transparencies. Since then, designing cheating-prevention visual secret-sharing (CPVSS) schemes has been studied by many researchers. In this paper, we cryptanalyze the Hu-Tzeng CPVSS scheme and show that it is not cheating immune. We also outline an improvement that helps to overcome the problem.

Keywords

cryptography; image coding; steganography; CPVSS schemes; cheating-prevention visual secret-sharing scheme; image encryption; steganography; visual cryptography; Authentication; Cryptography; Image reconstruction; Pattern recognition; Stacking; Visualization; Cheating-prevention scheme; cheating; secret sharing; visual cryptography (VC); Algorithms; Computer Graphics; Computer Security; Humans; Image Enhancement; Image Interpretation, Computer-Assisted; Information Storage and Retrieval; Pattern Recognition, Visual;

fLanguage

English

Journal_Title

Image Processing, IEEE Transactions on

Publisher

ieee

ISSN

1057-7149

Type

jour

DOI

10.1109/TIP.2012.2190082

Filename

6165357