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首页> 外文期刊>International Journal of Innovative Computing Information and Control >REVERSIBLE VISUAL SECRET SHARING BASED ON RANDOM-GRIDS FOR TWO-IMAGE ENCRYPTION
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REVERSIBLE VISUAL SECRET SHARING BASED ON RANDOM-GRIDS FOR TWO-IMAGE ENCRYPTION

机译:基于随机网格的两图像加密可逆可视秘密共享

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摘要

Based on the random-grids technique proposed by Kafri and Keren, Chang et al. presented a visual secret-sharing (VSS) scheme in order to encrypt two secret images simultaneously. Such a scheme stacks two generated shadows together to recover the first secret image and shifts the second shadow horizontally to reveal the second secret image, but the visual quality of the recovered image is not satisfactory. In this paper, two visual secret-sharing schemes are proposed to improve the visual quality in different ways to satisfy the requirements of applying VSS in the visual authentication field and in the highly-sensitive, information-hiding field, respectively. The first scheme utilizes the exclusive OR operation to recover the first secret image completely and to achieve much better contrast quality in the second secret image when it is recovered. The second scheme can achieve reversibility for both recovered secret images at the cost of losing the shifted part of the second recovered image. Our experimental results showed the effectiveness of the proposed schemes.
机译:基于Kafri和Keren提出的随机网格技术,Chang等人。提出了一种视觉秘密共享(VSS)方案,以便同时加密两个秘密图像。这种方案将两个生成的阴影堆叠在一起以恢复第一秘密图像,并水平移动第二阴影以显示第二秘密图像,但是恢复的图像的视觉质量并不令人满意。本文提出了两种视觉秘密共享方案,以不同方式提高视觉质量,以满足分别在视觉认证领域和高敏感信息隐藏领域中应用VSS的要求。第一种方案利用异或运算来完全恢复第一秘密图像,并在恢复第二秘密图像时获得更好的对比度质量。第二方案可以以丢失第二恢复的图像的移位部分为代价来实现两个恢复的秘密图像的可逆性。我们的实验结果表明了所提方案的有效性。

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