Secure and Robust Optical Multi-Stage Medical Image Cryptosystem  

作　　者：Walid El-Shafai Moustafa H.Aly Abeer D.Algarni Fathi E.Abd El-Samie Naglaa F.Soliman 

机构地区：[1]Department Electronics and Electrical Communications,Faculty of Electronic Engineering,Menoufia University,Menouf,32952,Egypt [2]Department of Electronics and Communications Engineering,College of Engineering and Technology,Arab Academy for Science,Technology and Maritime Transport,Alexandria,1029,Egypt [3]Department of Information Technology,College of Computer and Information Sciences,Princess Nourah Bint Abdulrahman University,Riyadh,84428,Saudi Arabia [4]Department of Electronics and Communications,Faculty of Engineering,Zagazig University,Zagazig,44519,Egypt

出　　处：《Computers, Materials & Continua》2022年第1期895-913,共19页计算机、材料和连续体（英文）

基　　金：This research was funded by the Deanship of Scientific Research at Princess Nourah bint Abdulrahman University through the Fast-track Research Funding Program to support publication in the top journal(Grant no.42-FTTJ-12).

摘　　要：Due to the rapid growth of telemedicine and healthcare services,color medical image security applications have been expanded precipitously.In this paper,an asymmetric PTFrFT(Phase Truncated Fractional Fourier Transform)-based color medical image cryptosystem is suggested.Two different phases in the fractional Fourier and output planes are provided as deciphering keys.Accordingly,the ciphering keys will not be employed for the deciphering procedure.Thus,the introduced PTFrFT algorithm comprises asymmetric ciphering and deciphering processes in contrast to the traditional optical symmetric OSH(Optical Scanning Holography)and DRPE(Double Random Phase Encoding)algorithms.One of the principal impacts of the introduced asymmetric cryptosystem is that it eliminates the onedimensionality aspects of the related symmetric cryptosystems due to its remarkable feature of phase nonlinear truncation components.More comparisons on various colormedical images are examined and analyzed to substantiate the cryptosystem efficacy.The achieved experimental outcomes ensure that the introduced cryptosystem is robust and secure.It has terrific cryptography performance compared to conventional cryptography algorithms,even in the presence of noise and severe channel attacks.

关 键 词：Optical encryption medical image security symmetric and asymmetric encryption OSH DRPE PTFrFT 

分 类 号：O17[理学—数学]