Dual Image Cryptosystem Using Henon Map and Discrete Fourier Transform  

作　　者：Hesham Alhumyani 

机构地区：[1]Department of Computer Engineering,College of Computers and Information Technology,Taif University,P.O.Box 11099,Taif 21944,Saudi Arabia

出　　处：《Intelligent Automation & Soft Computing》2023年第6期2933-2945,共13页智能自动化与软计算（英文）

基　　金：This research was funded by Deanship of Scientific Research,Taif University Researches Supporting Project number(TURSP-2020/216),Taif University,Taif,Saudi Arabia.

摘　　要：This paper introduces an efficient image cryptography system.The pro-posed image cryptography system is based on employing the two-dimensional(2D)chaotic henon map(CHM)in the Discrete Fourier Transform(DFT).The proposed DFT-based CHM image cryptography has two procedures which are the encryption and decryption procedures.In the proposed DFT-based CHM image cryptography,the confusion is employed using the CHM while the diffu-sion is realized using the DFT.So,the proposed DFT-based CHM image crypto-graphy achieves both confusion and diffusion characteristics.The encryption procedure starts by applying the DFT on the image then the DFT transformed image is scrambled using the CHM and the inverse DFT is applied to get the final-ly encrypted image.The decryption procedure follows the inverse procedure of encryption.The proposed DFT-based CHM image cryptography system is exam-ined using a set of security tests like statistical tests,entropy tests,differential tests,and sensitivity tests.The obtained results confirm and ensure the superiority of the proposed DFT-based CHM image cryptography system.These outcomes encourage the employment of the proposed DFT-based CHM image cryptography system in real-time image and video applications.

关 键 词：Discrete Fourier Transform(DFT) chaotic henon map(CHM) CONFUSION diffusion CRYPTOGRAPHY 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]