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Improvements of image sharing with steganography and authentication

机译:通过隐写术和身份验证改善图像共享

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摘要

Recently, Lin and Tsai proposed an image secret sharing scheme with steganography and authentication to prevent participants from the incidental or intentional provision of a false stego-image (an image containing the hidden secret image). However, dishonest participants can easily manipulate the stego-image for successful authentication but cannot recover the secret image, i.e., compromise the steganography. In this paper, we present a scheme to improve authentication ability that prevents dishonest participants from cheating. The proposed scheme also defines the arrangement of embedded bits to improve the quality of stego-image. Furthermore, by means of the Galois Field GF(2~8), we improve the scheme to a lossless version without additional pixels.
机译:最近,Lin和Tsai提出了一种带有隐写术和身份验证的图像秘密共享方案,以防止参与者意外或有意提供虚假的隐身图像(包含隐藏的秘密图像的图像)。然而,不诚实的参与者可以容易地操纵隐秘图像以成功地进行认证,但是不能恢复秘密图像,即损害隐密术。在本文中,我们提出了一种提高身份验证能力的方案,可以防止不诚实的参与者作弊。所提出的方案还定义了嵌入位的布置,以提高隐秘图像的质量。此外,借助伽罗瓦域GF(2〜8),我们将该方案改进为无损版本,而没有其他像素。

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