We propose a simple amplitude-phase retrieval attack free cryptosystem based on direct attack to phase-truncated Fourier-transform-based encryption using a random amplitude mask (RAM). The RAM that is not saved during the encryption provides extremely high security for the two private keys, and no iterative calculations are involved in the nonlinear encryption process. Lack of enough constraints makes the specific attack based on iterative amplitude-phase retrieval algorithms unusable. Numerical simulation results are given for testing the validity and security of the proposed approach.
© 2013 Optical Society of America
Original Manuscript: July 2, 2013
Revised Manuscript: August 1, 2013
Manuscript Accepted: August 18, 2013
Published: September 13, 2013
Xiaogang Wang and Daomu Zhao, "Amplitude-phase retrieval attack free cryptosystem based on direct attack to phase-truncated Fourier-transform-based encryption using a random amplitude mask," Opt. Lett. 38, 3684-3686 (2013)