Verifiable Secure Secret Image Sharing Scheme

Many visual secret sharing schemes for digital images have been developed in recent years. The new progressive secret sharing scheme for grayscale images proposed in this paper is based on a combination of bit-plane slicing of an image and equation based secret sharing scheme. First, n*n secret image and n*n cover images are decomposed into bit-plane images. Then higher bit-plane images of the both are utilized to produce shadows. The proposed scheme progressively recovers the secret. After collecting all shadow images, the secret image can be completely recovered.