一种可完全恢复的门限多秘密视觉密码方案  

Threshold Multi-Secret Visual Cryptography Scheme with Perfect Recovery

作　　者：付正欣[1] 沈刚[1] 李斌 郁滨[1] 

机构地区：[1]信息工程大学,河南郑州450001 [2]信息保障技术重点实验室,北京100072

出　　处：《软件学报》2015年第7期1757-1771,共15页Journal of Software

基　　金：国家自然科学基金(61070086);信息保障技术重点实验室开放基金(KJ-13-107)

摘　　要：针对门限结构下恢复多幅秘密图像存在信息损失的问题,给出了一个完全恢复的门限多秘密视觉密码定义,能够适应门限值与秘密数量之间的各种对应关系.在此基础上,通过构造具有上下门限值的单门限多秘密视觉密码方案,并设计旋转规则融合算法和区域合并算法,提出了一种多门限方案.最后,对方案的有效性进行了理论证明和实验验证.To address the issue of information loss in recovering multiple secret images for threshold structure, this paper develops a definition of threshold multi-secret visual cryptography with perfect recovery, which can adapt to various corresponding relationship between the threshold value and the secret number. Based on the given definition, a single-threshold multi-secret visual cryptography scheme with upper and lower thresholds is constructed, and a multiple-threshold scheme is then proposed by designing the rotation rule fusion algorithm and the region merging algorithm. Furthermore, the effectiveness is proved theoretically and verified by experiments.

关 键 词：视觉密码 多秘密 单门限 多门限 信息损失 完全恢复 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]