Abstract As an indirect imaging technique, computational ghost imaging (GI) obtains the object information by calculating the intensity correlation between a series of computer-generated matrices and the corresponding bucket signals, which thereby offers a potential application in optical encryption. Here, we propose a new steganography scheme, called ghost steganography, based on the principle of computational GI. In our ghost steganography scheme, the bucket intensity signals of a secret image are concealed into the ones of a non-secret image by applying a non-conspicuous number integration process. To further increase the security, we introduce RSA cryptography to encode the integrated bucket signals after the steganography process. Simulation and experiment results fully demonstrate the feasibility of our optical ghost cryptography and steganography scheme. Our work paves a way to the application of GI in steganography and also enriches the knowledge of symmetric and asymmetric optical cryptography. @ Elsevier, 2020.

中文翻译：

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光鬼密码术和隐写术

摘要 作为一种间接成像技术，计算重影（GI）通过计算一系列计算机生成的矩阵与相应的桶信号之间的强度相关性来获取目标信息，从而在光学加密中提供了潜在的应用。在这里，我们基于计算 GI 的原理提出了一种新的隐写术方案，称为幽灵隐写术。在我们的幽灵隐写术方案中，通过应用不显眼的数字集成过程，秘密图像的桶强度信号被隐藏到非秘密图像的桶强度信号中。为了进一步提高安全性，我们引入了 RSA 密码学，在隐写过程之后对集成的桶信号进行编码。仿真和实验结果充分证明了我们的光鬼密码和隐写方案的可行性。我们的工作为 GI 在隐写术中的应用铺平了道路，也丰富了对称和非对称光密码学的知识。@爱思唯尔，2020 年。