Improved Random Grid-based Cheating Prevention Visual Cryptography Using Latin Square
Improved Random Grid-based Cheating Prevention Visual Cryptography Using Latin Square
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DOI：
10.1145/3550275
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发表时间：
2022-08
期刊：
影响因子：
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通讯作者：
Sophie C. C. Sun-Sophie-C.-C.-Sun-48904544;Yongkang Zhao;Fangbo Fu;Y. Ren
中科院分区：
文献类型：
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作者：
Sophie C. C. Sun-Sophie-C.-C.-Sun-48904544;Yongkang Zhao;Fangbo Fu;Y. Ren
视觉密码方案是一种将秘密图像加密成n个类噪声部分的方法。秘密图像可以通过堆叠足够的份额来重建。在过去的二十年里，人们提出了许多方案来实现防作弊的视觉密码方案。值得注意的是，Ren等人[9]在拉丁方的帮助下首次引入了CPO-R的概念。受他们工作的启发，本文提出了一种新的可靠方案。更确切地说，为了促进认证过程，我们将有意义的字符嵌入到每个划分块中随机选择的认证模式中。此外，我们修复了共享Sg和验证Verg的堆叠结果中的安全漏洞，其中1≤ g≤ n。由于该方案利用随机网格对秘密图像进行加密，因此生成的份额没有像素扩展。最后，理论分析和实验结果进行评估所提出的方案的效率和安全性。
Visual cryptography scheme is a method of encrypting secret image into n noiselike shares. The secret image can be reconstructed by stacking adequate shares. In the past two decades, many schemes have been proposed to realize the cheating prevention visual cryptography scheme (CPVCS). Significantly, Ren et al. [9] first introduced the idea of CPVCS with the help of Latin square. Inspired by their work, in this article, a new reliable scheme is proposed. More precisely, to facilitate the certification process, we embed meaningful characters into the randomly chosen authentication patterns in each divided blocks. Furthermore, we fix the security vulnerability in the stacked results of share Sg and verification Verg, where 1≤ g≤ n. Since the improved scheme encrypts the secret image by utilizing random grids, the generated shares have no pixel expansion. Finally, theoretical analysis and experimental results are conducted to evaluate the efficiency and security of the proposed scheme.