A non-linear preprocessing for opto-digital image encryption using multiple-parameter discrete fractional Fourier transform

2016 ◽  
Vol 359 ◽  
pp. 85-94 ◽  
Author(s):  
Seif Eddine Azoug ◽  
Saad Bouguezel
Keyword(s):  
Fourier Transform ◽  
Image Encryption ◽  
Digital Image ◽  
Fractional Fourier Transform ◽  
Discrete Fractional Fourier Transform ◽  
Multiple Parameter ◽  
Non Linear ◽  
Digital Image Encryption

Asymmetric image encryption using phase-truncated discrete multiple-parameter fractional Fourier transform

2018 ◽  
Vol 25 (6) ◽  
pp. 701-707 ◽  
Author(s):  
Guanghui Ren ◽  
Jianan Han ◽  
Jiahui Fu ◽  
Mingguang Shan
Keyword(s):  
Fourier Transform ◽  
Image Encryption ◽  
Fractional Fourier Transform ◽  
Multiple Parameter

scholarly journals Key Validity Using the Multiple-parameter Fractional Fourier Transform for Image Encryption

2021 ◽  
Author(s):  
Tieyu Zhao ◽  
Yingying Chi
Keyword(s):  
Numerical Simulation ◽  
Fourier Transform ◽  
Information Security ◽  
Theoretical Analysis ◽  
Image Encryption ◽  
Fractional Fourier Transform ◽  
Point Of View ◽  
Multiple Parameter

Abstract Multiple-parameter fractional Fourier transform (MPFRFT) is proposed and applied to image encryption. The MPFRFT with two vector parameters has better security, which becomes the main technical means to protect information security. However, our study found that many keys of the MPFRFT are invalid, which greatly reduces its security. Theoretical analysis and numerical simulation verify our point of view.

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