Zhang Lin, Wang Xiaogang, Zhou Qingming, Xue Jidong, Xu Bijun
Opt Express. 2024 Jan 29;32(3):4242-4253. doi: 10.1364/OE.510356.
We propose an optical encryption system that combines computational ghost imaging (CGI) with image authentication to enhance security. In this scheme, Hadamard patterns are projected onto the secret images, while their reflected light intensities are captured using a bucket detector (BD). To further strengthen the security of the collected secret data, we encrypt it as a series of binary matrices serving as ciphertext. During the authentication key generation, these encoded binary matrices serve as illumination patterns in the CGI system for a non-secret image, which is used as a reference image for authentication. The data captured by the BD is then binarized to generate the authentication key. Upon successful authentication, the receiver obtains the decryption keys. This method achieves both data compression for secret images and enhanced security during information transmission. We validate the feasibility of this method through computer simulations and optical experiments.
我们提出了一种将计算鬼成像（CGI）与图像认证相结合以增强安全性的光学加密系统。在该方案中，将哈达玛图案投影到秘密图像上，同时使用桶探测器（BD）捕获其反射光强度。为了进一步加强所收集秘密数据的安全性，我们将其加密为一系列用作密文的二进制矩阵。在认证密钥生成过程中，这些编码的二进制矩阵在CGI系统中用作非秘密图像的照明图案，该非秘密图像用作认证的参考图像。然后将由BD捕获的数据进行二值化以生成认证密钥。认证成功后，接收方获得解密密钥。该方法既实现了秘密图像的数据压缩，又增强了信息传输过程中的安全性。我们通过计算机模拟和光学实验验证了该方法的可行性。
