کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1533190 | 1512547 | 2016 | 5 صفحه PDF | دانلود رایگان |
• We find a serious security problem on the m-MPFRFT.
• We present a new generalized fractional Fourier transform.
• We proposed an image encryption scheme based on new method.
• The encryption scheme has overcome the problem and enlarged the key space.
Recently, multi-parameter fractional Fourier transform (MPFRFT) has been widely applied in the optics cryptosystem, which has attracted more and more researchers’ attention. However, in further study we find a serious security problem on the MPFRFT which is the multi-choice of decryption key corresponding to an encryption key. The existence of multi-decryption-key hinders the application of this algorithm. We present a new generalized fractional Fourier transform, which can overcome the problem and enlarge the key space. The simulation results show that the proposed algorithm has higher security and key sensitivity.
Journal: Optics Communications - Volume 376, 1 October 2016, Pages 47–51