Interference Based on Image Encryption in Fractional Fourier Domain Using Symmetric Keys

Abstract

     A Fractional Fourier Transform (FFT), we offer a picture encryption approach that relies here on the intrusion concept and a “phase Truncation” (PT) strategy. The suggested system uses symmetric keys to provide various levels of security while avoiding the silhouette problem. Multiple input images are fractionally Fourier independently converted using a random phase mask (RPM). The resultant spectrum's amplitude truncation (AT) aids in the generation of individual and universal keys, while PT provides two “phase-only masks” (POM) divergent. In two POM optically interact during decryption, resulting in a PT output function. The actual picture is successfully recovered after employing the correct RPM, global key, particular key, and fractional sequences. The proposed method is validated on the computer simulation process of two gray-scale photographs. To know what the best-proposed approach is, we measured the “mean square error” (MSE) around the actual and deciphered pictures. The encrypting and decrypting keys creation in this system are difficult and should be done digitally. An optoelectronic system has been proposed for decryption.