New visual secret sharing schemes using probabilistic method
New visual secret sharing schemes using probabilistic method
复制标题
DOI：
10.1016/j.patrec.2003.12.011
复制
发表时间：
2004-03
期刊：
影响因子：
--
通讯作者：
Ching-Nung Yang
中科院分区：
文献类型：
--
作者：
Ching-Nung Yang
视觉秘密共享（VSS）方案是一种理想的安全方法，它通过将秘密图像分解为阴影图像（称为阴影）来保护秘密图像。与其他门限方案不同，VSS方案可以很容易地被人类视觉系统解码，而不需要密码学和密码计算的知识。然而，阴影图像的大小（即，VSS方案中的黑色和白色矩阵的列数[Naor，Shamir，可视密码学，AdvancesinCryptology-EUROPHOTOPT '94，LectureNotesinComputerScience，vol.950，Springer-Verlag，1995，p.1]）将被扩展。最近关于VSS方案的大多数论文都致力于获得更高的对比度或更小的阴影尺寸。在本文中，我们使用白色像素的频率来表示恢复图像的对比度。我们的方案是不可扩展的，可以很容易地实现传统的VSS方案的基础上。术语不可扩展意味着原始图像和阴影的大小相同。
Visual secret sharing (VSS) scheme is a perfect secure method that protects a secret image by breaking it into shadow images (called shadows). Unlike other threshold schemes, VSS scheme can be easily decoded by the human visual system without the knowledge of cryptography and cryptographic computations. However, the size of shadow images (i.e., the number of columns of the black and white matrices in VSS scheme [Naor, Shamir, Visual cryptography, Advances in Cryptology-EUROCRYPT’94, Lecture Notes in Computer Science, vol. 950, Springer-Verlag, 1995, p. 1]) will be expanded. Most recent papers about VSS schemes are dedicated to get a higher contrast or a smaller shadow size. In this paper, we use the frequency of white pixels to show the contrast of the recovered image. Our scheme is non-expansible and can be easily implemented on a basis of conventional VSS scheme. The term non-expansible means that the sizes of the original image and shadows are the same.