This study proposes a new image encryption scheme based on a generalized Arnold map and Rivest–Shamir–Adleman (RSA) algorithm. First, the parameters of the generalized Arnold map are generated by an asymmetric encryption-system RSA algorithm, and the keystream is produced iteratively. To change the distribution of pixel values, the image data are hidden by XOR diffusion. Second, both rows and columns of the image are cyclically confused to hide the image data again. Then, the additive mode diffusion operation is performed to realize third-layer hiding for image content. The overall diffusion and confusion operations are conducted twice to obtain the final cipher image. Test results prove that the encryption scheme proposed in this study is effective and has strong antiattack capabilities and key sensitivity. In addition, because the scheme security relies on the RSA algorithm, it has high security.

中文翻译：

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基于广义Arnold映射和RSA算法的图像加密方案

这项研究提出了一种基于广义Arnold映射和Rivest–Shamir–Adleman（RSA）算法的新图像加密方案。首先，通过非对称加密系统RSA算法生成广义Arnold映射的参数，并反复生成密钥流。为了改变像素值的分布，图像数据通过XOR扩散被隐藏。其次，图像的行和列都被周期性地混淆以再次隐藏图像数据。然后，执行加法模式扩散操作以实现图像内容的第三层隐藏。进行两次整体扩散和混淆操作，以获得最终的密码图像。测试结果证明，本文提出的加密方案是有效的，具有很强的抗攻击能力和密钥敏感性。此外，