Abstract In this paper, we propose a secret image sharing scheme with constant size shadow images. In the proposed scheme, the size of the shadow images is 23 × 23 irrespective of the secret image size. The scheme also offers a lossless reconstruction of the secret image without requiring pre-sharing of a key between the share generator and combiner. The scheme is based on a multi-secret sharing scheme and uses pixel value co-ordinate sharing. We prove the security of the proposed secret image sharing scheme by reducing it to the underlying multi-secret sharing scheme. Finally, we evaluate the correctness of the scheme by conducting experiments on standard images.

中文翻译：

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具有恒定大小阴影图像的基于像素坐标的秘密图像共享方案

摘要 在本文中，我们提出了一种具有恒定大小阴影图像的秘密图像共享方案。在所提出的方案中，无论秘密图像的大小如何，阴影图像的大小都是 23 × 23。该方案还提供了秘密图像的无损重建，而无需在共享生成器和组合器之间预先共享密钥。该方案基于多秘密共享方案，使用像素值坐标共享。我们通过将其简化为底层的多秘密共享方案来证明所提出的秘密图像共享方案的安全性。最后，我们通过对标准图像进行实验来评估该方案的正确性。