Visual cryptography for general access structures
Information and Computation
Constructions and Properties of k out of nVisual Secret Sharing Schemes
Designs, Codes and Cryptography
Extended capabilities for visual cryptography
Theoretical Computer Science
Visual cryptography for gray-level images by dithering techniques
Pattern Recognition Letters
New visual secret sharing schemes using probabilistic method
Pattern Recognition Letters
Image encryption by random grids
Pattern Recognition
Efficient visual secret sharing scheme for color images
Pattern Recognition
Image encryption by multiple random grids
Pattern Recognition
Sharing visual multi-secrets using circle shares
Computer Standards & Interfaces
IEEE Transactions on Image Processing
Visual multiple secret sharing based upon turning and flipping
Information Sciences: an International Journal
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We design innovative algorithms for visual multiple-secret sharing using circle or cylinder random grids in this paper. Formal validations, security analyses, and computer implementations are discussed to demonstrate the correctness and feasibility of our algorithms. As compared to the schemes developed in conventional visual cryptography, our design delivers three significant advantages: (1) it is capable of sharing multiple (instead of only one or two) secret images in two shares; (2) it does not result in any extra pixel expansion so that the sizes of the secret image and the encrypted shares are exactly the same; and (3) it is simple and easy to implement. These advantages broaden the potential applicability and flexibility of visual secret sharing schemes.