Communications of the ACM
Visual Authentication and Identification
CRYPTO '97 Proceedings of the 17th Annual International Cryptology Conference on Advances in Cryptology
New visual secret sharing schemes using probabilistic method
Pattern Recognition Letters
Aspect ratio invariant visual secret sharing schemes with minimum pixel expansion
Pattern Recognition Letters
Sharing a Secret Two-Tone Image in Two Gray-Level Images
ICPADS '05 Proceedings of the 11th International Conference on Parallel and Distributed Systems - Workshops - Volume 02
Probabilistic Visual Cryptography Schemes
The Computer Journal
Size-Adjustable Visual Secret Sharing Schemes
IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences
Image encryption by random grids
Pattern Recognition
Sharing multiple secrets in visual cryptography
Pattern Recognition
Friendly progressive visual secret sharing
Pattern Recognition
Visual Cryptography in reversible style
IIH-MSP '07 Proceedings of the Third International Conference on International Information Hiding and Multimedia Signal Processing (IIH-MSP 2007) - Volume 01
Sharing visual multi-secrets using circle shares
Computer Standards & Interfaces
Invertible secret image sharing with steganography
Pattern Recognition Letters
Journal of Visual Communication and Image Representation
Threshold visual secret sharing by random grids
Journal of Systems and Software
Multi-image encryption by circular random grids
Information Sciences: an International Journal
Random grid-based visual secret sharing for general access structures with cheat-preventing ability
Journal of Systems and Software
Medical image protection using secret sharing scheme
Proceedings of the 6th International Conference on Ubiquitous Information Management and Communication
Yet another multiple-image encryption by rotating random grids
Signal Processing
Optimal (2,n) and (2,infinity) visual secret sharing by generalized random grids
Journal of Visual Communication and Image Representation
A new authentication based cheating prevention scheme in Naor-Shamir's visual cryptography
Journal of Visual Communication and Image Representation
Random grid-based visual secret sharing with abilities of OR and XOR decryptions
Journal of Visual Communication and Image Representation
Image sharing method for gray-level images
Journal of Systems and Software
Improving the visual quality of random grid-based visual secret sharing
Signal Processing
Quality-adaptive visual secret sharing by random grids
Journal of Systems and Software
XOR-based meaningful visual secret sharing by generalized random grids
Proceedings of the first ACM workshop on Information hiding and multimedia security
Threshold visual secret sharing by random grids with improved contrast
Journal of Systems and Software
Visual secret sharing with cheating prevention revisited
Digital Signal Processing
Improved tagged visual cryptography by random grids
Signal Processing
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Recently, the visual secret sharing (VSS) technique by random grids (RG), proposed by Kafri and Keren in 1987, has drawn attention in academia again to remove the abovementioned drawbacks. However, Kafri and Keren's scheme is a 2-out-of-2 VSS scheme but neither n-out-of-n nor 2-out-of-n(n2). In this paper, novel n-out-of-n (Method 1) and 2-out-of-n (Method 2) secret image sharing schemes based on RG are proposed to encrypt the secret into n cipher-grids without pixel expansion and additional codebook required. In the decryption phase, while participants superimpose all (Method 1) or at least two (Method 2) cipher-grids without any extra computation, the secret is recognizable by the human visual system. To our best knowledge, this paper is the first attempt in the literature to develop new RG-based VSS schemes by means of extending the basic 2-out-of-2 scheme to the n-out-of-n as well as 2-out-of-n ones. To demonstrate the correctness of the proposed schemes, the formal analysis is given while the experimental results show the proposed schemes do work well.