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A known-plaintext attack on iterative random phase encoding in fractional Fourier domains

Yin F., He Q., Liu Z.

Optica Applicata

2017

Vol. 47, nr 1

131--139

Known-plaintext attack is considered for decrypting the image generated by iterative random phase encoding in fractional Fourier transform domains. The double random phase encoding in Fourier domains is introduced to design the known-plaintext attack procedure. The decryption test is explored without both fractional order and these random phase masks. Some numerical simulations are made to demonstrate the validity of the known-plaintext attack.