Research On Asymmetric Dual Image Encryption Technology Based On Wavelength Hybrid Multiplexing

With the continuous development of information technology,people pay more and more attention to their own information security.With the advent of the information age,the carrier of information transmission has also been transformed from letters to multimedia forms such as pictures,which has brought new challenges to the renewal of information security technology.Optical image encryption technology involves related technologies in the field of Optics and cryptography.Image data encryption has developed rapidly in the field of information security.In order to improve the encryption capacity and security of the system,this paper focuses on the application of dual image encryption in phase recovery algorithm and asymmetric optical encryption,and numerically analyzes the proposed algorithm to verify the performance of the algorithm.The research contents can be summarized as follows:Firstly,this paper focuses on the image encryption algorithm based on interference in optical image encryption,analyzes the basic optical theory of the classical algorithm,makes encryption and decryption more simple and efficient,and also studies the specific reason of its security hidden danger contour effect.Then,the application of iterative phase recovery algorithm in interference image encryption is deeply studied,and the wavelength multiplexing technology used in dual image encryption is studied.Secondly,combined with the research background,a phase recovery image encryption algorithm based on wavelength hybrid multiplexing is proposed.Two images are encrypted at the same time in one iteration,which improves the efficiency of the algorithm.Moreover,the ciphertext is generated iteratively,and the security is improved.Numerical analysis verifies the feasibility of the algorithm.Simulation experiments on key sensitivity,anti occlusion attack and anti noise attack verify the robustness of the algorithm,which lays a theoretical foundation for the subsequent algorithms.Finally,based on the phase recovery algorithm of wavelength mixing multiplexing,in order to improve the performance of the algorithm against violence and other attacks,the research on asymmetric image encryption algorithm is carried out.The application of the principle of equal modulus decomposition algorithm in interference encryption is simulated,and the way and effect of the algorithm to solve the contour effect are explored.Combined with the phase recovery image encryption algorithm based on wavelength hybrid multiplexing,a new dual image encryption algorithm based on equal modulus decomposition is proposed.The encryption algorithm can encrypt and decrypt two images at the same time with high quality and low crosstalk,and can effectively resist the attack of iterative amplitude phase retrieval algorithm(APRA).Numerical analysis verifies the effectiveness and reliability of the algorithm.