BibTeX:

@article{IJIRSTV1I11108,
     title={Natural Image Based Visual Secret Sharing Using (k, n) Shares },
     author={Veena K Suresh, Sarath V Sankaran and Ambikadevi Amma T},
     journal={International Journal for Innovative Research in Science & Technology},
     volume={1},
     number={11},
     pages={363--368},
     year={},
     url={http://www.ijirst.org/articles/IJIRSTV1I11108.pdf},
     publisher={IJIRST (International Journal for Innovative Research in Science & Technology)},
}

Visual cryptography (VC) is a technique that divides a secret image into n shares, that are distributed to the concerned participants and to decrypt, the shares are stacked to get the secret image back. The shares can cause transmission risks and management issues, hence a Natural-image-based Visual Secret Sharing scheme (NVSS scheme) is being used. NVSS scheme can share one digital secret image over n-1 arbitrary selected natural images (called natural shares) which are diverse, and one noise-like share. The noise-like share is generated based on these natural shares and the secret image. The existing system used the (n, n) NVSS scheme, such that if at least a share out of n shares is lost or missing then the secret image cannot be retrieved forever. The proposing system uses (k, n) Visual Secret Sharing by using natural images in which at least k out of n active shares can provide access to the secret image. Hence the secret image can be retrieved if at least k out of n shares which includes the generated noise-like share is present for decryption. The proposing scheme hence provide security to the secret image and also uses unaltered images as shares in a VSS scheme to reduce transmission risks.

Visual Secret Sharing, Natural Images, Feature Extraction, Transmission Risks, Steganography