Zhang Yabin, Zhang Xiong, Shan Mingguang, Zhong Zhi, Liu Bin, Yu Lei, Liu Lei
Appl Opt. 2022 Feb 10;61(5):1248-1253. doi: 10.1364/AO.449580.
In this paper, we propose an asymmetric double-image encryption via wavelength multiplexing. First, a novel iterative phase retrieval algorithm, to the best of our knowledge, is developed to encode two images into one complex-valued function via wavelength multiplexing. Then, the function is encoded by equal modulus decomposition (EMD). This cryptosystem not only retains the advantages of EMD but also reduces the number of public keys so as to enhance the resistance to the amplitude-phase retrieval algorithm (APRA). In the decryption, two high-quality decrypted images can be obtained with their corresponding wavelengths. To the best of our knowledge, this is the first time that wavelength multiplexing is used to achieve high-quality two-image encryption and decryption. Numerical simulation results show the effectiveness and robustness of this new method.
在本文中，我们提出了一种通过波长复用的非对称双图像加密方法。首先，据我们所知，开发了一种新颖的迭代相位检索算法，通过波长复用将两幅图像编码为一个复值函数。然后，该函数通过等模分解（EMD）进行编码。此密码系统不仅保留了EMD的优点，还减少了公钥数量，从而增强了对幅度-相位检索算法（APRA）的抵抗力。在解密过程中，可以利用相应波长获得两幅高质量的解密图像。据我们所知，这是首次使用波长复用实现高质量的双图像加密和解密。数值模拟结果表明了这种新方法的有效性和鲁棒性。
