Learning complex scattering media for optical encryption

Title:	Learning complex scattering media for optical encryption
Authors:	Zhou, L Xiao, Y Chen, W
Issue Date:	15-Sep-2020
Source:	Optics letters, 15 Sept. 2020, v. 45, no. 18, p. 5279-5282
Abstract:	Optical encryption has provided a new insight for securing information; however, it is always desirable that high security can be achieved to withstand the attacks. In this Letter, we propose a new method via learning complex scattering media for optical encryption. After the recordings through complex scattering media, a designed learning model is trained. The proposed method uses an optical setup with complex scattering media to experimentally record the ciphertexts and uses a learning model to generate security keys. During the decryption, the trained learning model with its parameters is applied as security keys. In addition, various parameters, e.g., virtual phase-only masks, can be flexibly applied to further enlarge key space. It is experimentally demonstrated that the proposed learning-based encryption approach possesses high security. The proposed method could open up a new research perspective for optical encryption.
Publisher:	Optical Society of America
Journal:	Optics letters
ISSN:	0146-9592
EISSN:	1539-4794
DOI:	10.1364/OL.400174
Appears in Collections:	Journal/Magazine Article

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