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Security improvement for asymmetric cryptosystem based on spherical wave illumination |
Applied Optics, Vol. 52, Issue 3, pp. 467-473 (2013)
http://dx.doi.org/10.1364/AO.52.000467
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Abstract
We propose an improvement method for an asymmetric cryptosystem based on spherical wave illumination. Compared with the phase-truncated Fourier transform-based cryptosystem and the reported improving methods, the encryption process uses a spherical wave to illuminate the encryption system, rather than a uniform plane wave. As a result, the proposed method can avoid various types of the currently existing attacks and maintain the asymmetric characteristic of the cryptosystem. Moreover, due to only changing the illuminating mode, the proposed method can be easily implemented in optics compared with the reported improving methods. Simulation results are presented to demonstrate the feasibility and the security performance of the proposed method.
© 2013 Optical Society of America
OCIS Codes
(070.0070) Fourier optics and signal processing : Fourier optics and signal processing
(100.2000) Image processing : Digital image processing
(100.5070) Image processing : Phase retrieval
ToC Category:
Image Processing
History
Original Manuscript: September 25, 2012
Revised Manuscript: November 22, 2012
Manuscript Accepted: December 5, 2012
Published: January 17, 2013
Citation
Xiangling Ding, Xiaopeng Deng, Kehui Song, and Guangyi Chen, "Security improvement for asymmetric cryptosystem based on spherical wave illumination," Appl. Opt. 52, 467-473 (2013)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-52-3-467
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