Volume 4 Number 6 (Nov. 2015)
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IJCCE 2015 Vol.4(6): 439-453 ISSN: 2010-3743
DOI: 10.17706/IJCCE.2015.4.6.439-453

K out of K Extended Visual Cryptography Scheme Based on “XOR”

Wanli Dang, Mingxing He, Daoshun Wang, Xiao Li
Abstract—Visual cryptography schemes (VCS) is an encryption technique that utilizes human visual system in recovering secret image and it does not require any complex calculation. Many VCSs without pixel expansion have been proposed. But they recover secret image with low contrast due to the stacking operation. To improve the quality of recovered image, XOR-based VCS has been proposed. However, shares constructed from XOR-based VCS are random-looking. It suffers a management problem which dealers cannot visually identify each share. In this paper, we propose an (k, k) extended visual cryptography scheme (EVCS) by “XOR” operation to solve above mentioned problem. This is implemented by diving the share image into two parts using a parameter and operating the secret pixels and cover pixels respectively. Comparing with previous schemes, the qualities of share images and recovered image are improved, and our scheme also suit the “OR” operation.

Index Terms—Contrast, pixel expansion, probability, visual secret share, XOR.

Wanli Dang, Mingxing He, and Xiao Li are with the Department of Mathematics and Computer Engineering, Xihua University, Chengdu 610039, China.
Daoshun Wang is with the Department of Computer Science and Technology, Tsinghua University, Beijing 100084, China.

Cite:Wanli Dang, Mingxing He, Daoshun Wang, Xiao Li, "K out of K Extended Visual Cryptography Scheme Based on “XOR”," International Journal of Computer and Communication Engineering vol. 4, no. 6, pp. 439-453, 2015.

General Information

ISSN: 2010-3743 (Online)
Abbreviated Title: Int. J. Comput. Commun. Eng.
Frequency: Quarterly
Editor-in-Chief: Dr. Maode Ma
Abstracting/ Indexing: INSPEC, CNKI, Google Scholar, Crossref, EBSCO, ProQuest, and Electronic Journals Library
E-mail: ijcce@iap.org
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