Computer Science – Cryptography and Security
Scientific paper
2010-04-26
Journal of Computing, Volume 2, Issue 4, April 2010
Computer Science
Cryptography and Security
Journal of Computing online at https://sites.google.com/site/journalofcomputing/
Scientific paper
Visual Cryptography is a special encryption technique to hide information in images, which divide secret image into multiple layers. Each layer holds some information. The receiver aligns the layers and the secret information is revealed by human vision without any complex computation. The proposed algorithm is for color image, that presents a system which takes four pictures as an input and generates three images which correspond to three of the four input pictures. The decoding requires only selecting some subset of these 3 images, making transparencies of them, and stacking them on top of each other, so the forth picture is reconstructed by printing the three output images onto transparencies and stacking them together. The reconstructed image achieved in same size with original secret image.
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