文章基本信息

标题：Constructions and Properties of General (k, n) Block-Based Progressive Visual Cryptography
本地全文：下载
作者：Yang, Ching-Nung ; Wu, Chih-Cheng ; Lin, Yi-Chin 等
期刊名称：ETRI Journal
印刷版ISSN：1225-6463
电子版ISSN：2233-7326
出版年度：2015
卷号：37
期号：5
页码：979-989
DOI：10.4218/etrij.15.0114.0327
语种：English
出版社：Electronics and Telecommunications Research Institute
摘要：Recently, Hou and others introduced a (2, n) block-based progressive visual cryptographic scheme (BPVCS) in which image blocks can be gradually recovered step by step. In Hou and others' (2, n)-BPVCS, a secret image is subdivided into n non-overlapping image blocks. When t ( ) participants stack their shadow images, all the image blocks associated with these t participants will be recovered. However, Hou and others' scheme is only a simple 2-out-of-n case. In this paper, we discuss a general (k, n)-BPVCS for any k and n. Our main contribution is to give two constructions (Construction 1 and Construction 2) of this general (k, n)-BPVCS. Also, we theoretically prove that both constructions satisfy a threshold property and progressive recovery of the proposed (k, n)-BPVCS. For k = 2, Construction 1 is reduced to Hou and others' (2, n)-BPVCS.
关键词：Secret sharing;visual secret sharing;visual cryptography;progressive recovery