General Construction for Extended Visual Cryptography Scheme Using QR Codes

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Author(s): Yuqiao Cheng (Science and Technology on Information Assurance Laboratory, Beijing, China), Zhengxin Fu (Zhengzhou Information Science and Technology Institute, Zhengzhou, China), Bin Yu (Zhengzhou Information Science and Technology Institute, Zhengzhou, China)and Gang Shen (Zhengzhou Information Science and Technology Institute, Zhengzhou, China)
Copyright: 2019
Volume: 11
Issue: 1
Pages: 17
Source title: International Journal of Digital Crime and Forensics (IJDCF)
Editor(s)-in-Chief: Feng Liu (Chinese Academy of Sciences, China)
DOI: 10.4018/IJDCF.2019010101

Keywords: Digital Crime & Forensics / Information Science Reference / IT Security and Ethics / Security & Forensics

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Abstract

This article describes how a visual cryptography scheme, with one prominent feature—decrypting simply, has attracted much research attention since it was first proposed. However, meaningless shares remain a continuing challenge in the development of VCS. In this article, an extended visual cryptography scheme (EVCS) based on XOR operation is proposed, in which QR codes are utilized as the cover images of shares. By designation, all the shares generated in the scheme can be decoded by standard QR code readers with specific meaning. In addition, to achieve high sharing efficiency, a method of simultaneously sharing a secret QR code among multiple subsets is presented. Also, sufficient and necessary conditions of the method are analyzed with an integer programming model, providing a general construction approach for EVCS under arbitrary access structures.

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General Construction for Extended Visual Cryptography Scheme Using QR Codes

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