Threshold construction from specific cases in visual cryptography without the pixel expansion

被引：63
|
作者：
Yan, Xuehu [1 ]
Wang, Shen [1 ]
Niu, Xiamu [1 ]
机构：
[1] Harbin Inst Technol, Sch Comp Sci & Technol, Harbin 150080, Peoples R China
来源：
SIGNAL PROCESSING | 2014年 / 105卷
基金：
中国国家自然科学基金;
关键词：
Visual cryptography; Visual secret sharing; Progressive visual secret sharing; Pixel expansion; Threshold; ENCRYPTION;
D O I：
10.1016/j.sigpro.2014.06.011
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Unexpanded shares can decrease the bandwidth and save storage in a visual cryptography scheme (VCS). To avoid the pixel expansion, some previous VCSs without the pixel expansion were given. However, most of them are only for specific cases other than general threshold (case). In this paper, three general threshold construction methods from specific cases are proposed. The constructed threshold VCSs are also progressive VCS without the pixel expansion. Analyses and experiments are conducted to evaluate the security and efficiency of the proposed methods. (c) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码：389 / 398
页数：10
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