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Basic Visual Cryptography Using Braille

Guangyu Wang, Feng Liu and Wei Qi Yan
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Guangyu Wang: Institute of Information Engineering, Chinese Academy of Sciences, Beijing, China and Auckland University of Technology, Auckland, New Zealand
Feng Liu: Institute of Information Engineering, Chinese Academy of Sciences, Beijing, China
Wei Qi Yan: Institute of Information Engineering, Chinese Academy of Sciences, Beijing, China and Auckland University of Technology, Auckland, New Zealand

International Journal of Digital Crime and Forensics (IJDCF), 2016, vol. 8, issue 3, 85-93

Abstract: As a significant part of information security, Visual Cryptography (VC) is a secret sharing approach which has the advantage of effectively obscuring hints of original secret. In VC, a secret image is separated into partitions which are also known as VC shares. The secret is only able to be revealed by superimposing certain shares. Since Basic VC is in a structure which is similar to that of Braille where white and black dots are arranged in certain orders, it is feasible to utilize the feature of Braille for the authentication of VC. In this paper, the authors will conduct an experiment embedding Braille into grayscale and halftone images as well as VC shares. The result indicates that the embedding of Braille has little impact on VC secret revealing and enhances the security of VC shares.

Date: 2016
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