Circular meaningful shares based (k,n) two in one image secret sharing scheme for multiple secret images

摘要

Two in One Image Secret Sharing Scheme (TiOISSS) is a cryptographic technique which encrypts a secret image into n shares and the shares are decoded in two different stages to reconstruct the secret image. In this paper, an enhanced (k, n) TiOISSS which uses circular shares instead of rectangular shares based on random grids that shares multiple secret images using noisy and meaningful shares is proposed. In addition, to verify the authenticity of the shared secret images, the proposed scheme shares an additional authentication message along with the secret images. Experimental results and performance analysis with 2 and 3 secret images shared demonstrate the effectiveness of proposed scheme compared to existing scheme.