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Phase-Shifting-Free Interferometric Cryptosystem
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DOI：10.1088/0256-307X/34/3/034203.png)
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Abstract
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Conventional phase-shifting interferometry-based (PSI-based) cryptosystem needs at least two-step phase-shifting. In this work, we propose a phase-shifting-free interferometric cryptosystem, which needs only one interferogram recording. Since the phase-shifting step is not required in the proposed cryptosystem, not only the low encryption speed which is a bottleneck problem of the conventional PSI-based one is solved, but also the setup of the cryptosystem is simplified. A series of simulation experimental results demonstrate the validity and robustness of the proposed cryptosystem.
Keywords:
OPTICAL-IMAGE ENCRYPTION
PLAINTEXT ATTACK
FOURIER-TRANSFORM
KEYS
INTERFERENCE
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