Preview-Versioned Essential Secret Image Sharing
In a (t, s, k, n)-essential secret image sharing ESIS scheme, a secret image is shared into two kinds of shadows including s essential shadows and (n − s) non-essential shadows. When receiving at least k shadows containing at least t essential shadows, the secret image can be lossless revealed. In this paper, a preview-versioned style essential secret image sharing is proposed. When receiving at least t essential shadows, a previewed version of secret image can be revealed. It is reasonable that at least t essential shadows are entitled to see the rough version of secret image, when the total shadows are less than k.
KeywordsEssential secret image sharing Secret image sharing Rough previewing Essential shadows Preview-version
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