Abstract

In visual cryptography, many shares are generated that are seemingly random but contain a hidden message within themselves. When all the shares are combined, they reveal the secret image. The concept of visual secret sharing is to encrypt a secret image into multiple illogical share images. It ensures that no data about the original image is revealed unless at least one of the shares is obtained. The original image can be reconstructed by directly overlapping all the shares, allowing the human visual system to identify the complete secret image without the need for complex computational tools. Therefore, they can be communicated securely as a set of shares. The Rivest-Shamir-Adleman (RSA) approach is employed to enhance the privacy and safety of the image. This technique is used to generate multiple shares, which are then encrypted and decrypted using the RSA technique. The test results have demonstrated a peak signal-to-noise ratio of 58.0025, a mean square error value of 0.1164, and a correlation coefficient of 1 for the decrypted image, indicating no distortion from the original image.

Description