一种共享份分块构造的异或区域递增式视觉密码方案-电子与信息学报.pdfVIP

第 37 卷第 8 期 电 子 与 信 息 学 报 Vol.37 No.8 2015 年 8 月 Journal of Electronics Information Technology Aug. 2015 一种共享份分块构造的异或区域递增式视觉密码方案 郁 滨① 胡 浩*① 陈武平② 沈 刚① ①(信息工程大学 郑州 450001) ②(信息保障技术重点实验室 北京 100072) 摘 要：该文依据授权子集的个数将共享份划分若干块，按照共享份分块构造的设计思路，结合(n, n)异或单秘密 视觉密码的加密矩阵，构造了异或区域递增式视觉密码的秘密分享与恢复流程。与现有方案相比，该方案可以实现 解密区域图像的完全恢复，且明显减小了共享份的大小。 关键词：视觉密码；区域递增；密级；分块构造；异或运算；完全恢复 中图分类号： TP309.7 文献标识码： A 文章编号：1009-5896(2015)08-1978-06 DOI: 10.11999/JEIT141385 XOR-based Region Incrementing Visual Cryptography Scheme with Share Block Construction ① ① ② ① Yu Bin Hu Hao Chen Wu-ping Shen Gang ① (Information Engineering University, Zhengzhou 450001, China) ② (Science and Technology on Information Assurance Laboratory, Beijing 100072, China) Abstract: By designing the block construction for each share, which is divided into several blocks according to the number of qualified sets, the secret sharing and recovering algorithms of the XOR-based region incrementing visual cryptography are designed with the encoding matrices of the (n, n) XOR-based single secret sharing visual cryptography. Comparing with the existing schemes, the proposed scheme realizes the perfect recovery of decoded regions in secret image, and the sizes of shares are also decreased efficiently. Key words: Visual cryptography; Region incrementing; Security level; Block construction; XOR operation; Perfect recovery 1 引言 有效拓展了视觉密码的应用领域[10] 。