On the Analysis and Generalization of Extended Visual Cryptography Schemes
Cryptography and Security
2007-05-23 v1
Abstract
An Extended Visual Cryptography Scheme (EVCS) was proposed by Ateniese et al. [3] to protect a binary secret image with meaningful (innocent-looking) shares. This is implemented by concatenating an extended matrix to each basis matrix. The minimum size of the extended matrix was obtained from a hypergraph coloring model and the scheme was designed for binary images only [3]. In this paper, we give a more concise derivation for this matrix extension for color images. Furthermore, we present a (k, n) scheme to protect multiple color images with meaningful shares. This scheme is an extension of the (n, n) VCS for multiple binary images proposed in Droste scheme [2].
Keywords
Cite
@article{arxiv.cs/0610172,
title = {On the Analysis and Generalization of Extended Visual Cryptography Schemes},
author = {DaoShun Wang and Feng Yi and Xiaobo Li and Ping Luo and Yiqi Dai},
journal= {arXiv preprint arXiv:cs/0610172},
year = {2007}
}