Visual Secret Sharing Schemes with Cyclic Access Structure for Many Images

被引：0
|
作者：
Uno, Miyuki [1 ]
Kano, Mikio [1 ]
机构：
[1] Ibaraki Univ, Dept Comp & Informat Sci, Hitachi, Ibaraki 3168511, Japan
来源：
INFORMATION SECURITY AND CRYPTOLOGY - ICISC 2008 | 2009年 / 5461卷
关键词：
CRYPTOGRAPHY SCHEMES; PERFECT RECONSTRUCTION; BLACK PIXELS;
D O I：
暂无
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
We consider a visual secret sharing scheme with cyclic access structure for n, secret images and n shares, where two consecutive shares decode one secret image. This secret sharing scheme can be constructed by using Droste's method. However the contrast of its scheme is 1/(2n). In this paper, it, is shown that for every integer n >= 4, there exists no coustruction Of such a, visual Secret sharing scheme, having a perfect black reconstruction mid contrast at least 1/4. Also for every even integer n >= 4. a new construction of such A visual sharing scheme that satisfies a slightly weaker condition and has a contrast 1/4 is given.
引用
收藏
页码：84 / 97
页数：14
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