The multiple-parameter weighted fractional Fourier transform and its application to image encryption

2011 ◽  
Author(s):  
Jun Lang
Keyword(s):  
Fourier Transform ◽  
Image Encryption ◽  
Fractional Fourier Transform ◽  
Multiple Parameter

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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