Enhanced modulo based multi secret image sharing scheme

Abstract

Multi Secret Image Sharing (MSIS) scheme is a protected method to transmit more than one secret image over a communication channel. Traditionally, a single secret image is shared over a channel at a time. But as technology deepen, there arises a need for sharing more than one secret image. An (n, n)-MSIS scheme is used to encrypt n secret images into n meaningless shared images. To recover n secret images all n shared images are needed. In the state of the art, secrets are partially revealed from less than n shares. In this paper, we propose enhanced (n, n)-MSIS scheme based on modulo operation for binary, grayscale, and colored images. To increase the randomness of shared images we used Bitshift and Reversebit function. The experimental results show that the proposed scheme is highly secure and outperforms the existing MSIS schemes in terms of security.