FPGA-Based Real-Time Image Encryption Using Reversible Gate-Based Transformations

With the increasing demand for secure information dissemination, image privacy protection has become an important research direction. This study proposes an image encryption algorithm based on reversible quantum gate computation for secure image protection. The proposed method is implemented on an FPGA platform to realize quantum gate operations for encrypting plaintext images in real time and storing the encrypted images on an SD card. The decryption of the encrypted image by reversible quantum gate computation is expected to provide a new method for real-time image encryption. Experimental results demonstrate that the entropy analysis shows values meet a certain standard in terms of image steganography and security, with an entropy value close to the maximum value of 8. In addition, the Peak Signal-to-Noise Ratio (PSNR) value of the decrypted image is also more than 30 dB, which indicates that the proposed image encryption system can effectively maintain the image quality.