Abstract:
Visual cryptography is one of the best techniques used to secure information. It uses
the human vision to decrypt the encrypted images without any cryptographic computations,
the basic concept of visual cryptography is splitting the secret image into shares such that
when the shares are stacked, the secret image is revealed.
The Proposed Architecture extended visual cryptographic scheme for color images
use Arnold Mapping to ensure that the share pixels are thoroughly scrambled and the random
diffusion thoroughly scrambled to remove any correlation with the original image contents,
thus it enhances the security of the proposed method.
Public key encryption technique makes image shares so secure that it becomes very
hard for a third party to decode the secret image information without having required data
that is a private key(attacker). Results show that the proposed method suggest an efficient
way to encrypt a secret color image with better level of security and with a better value of
Peak signal to noise ratio (PSNR), histogram comparisons were also deployed to show the
robustness of the proposed cipher.
