New Colored Visual Secret Sharing Schemes |
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| Authors: | Ching-Nung Yang Chi-Sung Laih |
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| Affiliation: | (1) Department of Computer Science and Information Engineering, National Dong Hwa University, Hualien, Taiwan;(2) Department of Electrical Engineering, National Cheng Kung University, Tainan, Taiwan, R.O.C. |
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| Abstract: | Visual secretsharing (VSS) schemes are used to protect the visual secret bysending n transparencies to different participantsso that k-1 or fewer of them have no informationabout the original image, but the image can be seen by stackingk or more transparencies. However, the revealedsecret image of a conventional VSS scheme is just black and white.The colored k out of n VSS scheme sharinga colored image is first introduced by Verheul and Van Tilborg[1]. In this paper, a new construction for the colored VSS schemeis proposed. This scheme can be easily implemented on basis ofa black & white VSS scheme and get much better block lengththan the Verheul-Van Tilborg scheme. |
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| Keywords: | Visual cryptography secret sharing scheme |
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