Proposal of a Lattice-Based Visual Secret Sharing Scheme for Color and Gray-Scale Images

概要

論文の詳細を見る
The visual secret sharing scheme(VSSS)proposed by Naor and Shamir[1]provides a way to encrypt a secret black-white image into shares and decrypt the shares without using any cryptographic computation. This paper proposes an extension of VSSS to sharing of color or gray-scale images. In this paper(k, n)VSSS for images with J different colors is defined as a collection of J disjoint subsets in n-th product of a finite lattice. The subsets can be sequentially constructed as a solution of a certain simultaneous linear equation. In particular, the subsets are simply expressed in(n, n), (n-1, n)and(2, n)cases. Any collections of k-1 shares reveal no information on a secret image while stacking of k arbitrary shares reproduces the secret image.
社団法人電子情報通信学会の論文
1998-06-25