Title
Prevention of cheating in visual cryptography by using coherent patterns
Abstract
new VC scheme with cheating-prevention ability is proposed.It reveals solid pattern with moderate-scale on partial-superimposed image.The proposed method verifies shares without any additional authentication shares.The proposed method endows conventional VC with cheating-prevention ability. This paper proposes a simple method for establishing a visual cryptographic (VC) scheme with the ability to prevent cheating. Given the n base-shares generated in a conventional (t,n), 2≤t≤n, VC scheme, an authentication pattern stamping process was designed to encode the n base-shares to get n verifiable shares that exhibit the following properties: (1) knowledge of less than t verifiable-shares gets no secret information, (2) the secret can be revealed by completely superimposing t or more verifiable-shares, and (3) the authentication pattern can be revealed by partially superimposing any pair of verifiable-shares. Theoretical proof and computer simulation for the proposed method are provided. The proposed method has smaller pixel expansion than previous cheating prevention VC schemes, and the verification process is fulfilled without resorting to any additional dedicated verification share. It can be attached easily to any reported VC scheme to endow legitimate users with the capability of detecting faked shares provided by malicious participants.
Year
DOI
Venue
2015
10.1016/j.ins.2014.12.046
Information Sciences: an International Journal
Keywords
Field
DocType
secret sharing
ENCODE,Authentication,Secret sharing,Cryptography,Computer science,Theoretical computer science,Image sharing,Verifiable secret sharing,Cheating,Visual cryptography
Journal
Volume
Issue
ISSN
301
C
0020-0255
Citations 
PageRank 
References 
4
0.41
22
Authors
4
Name
Order
Citations
PageRank
Pei-Yu Lin1175.62
Ran-Zan Wang261048.37
Yu-Jie Chang3102.60
Wen-Pinn Fang49613.26