Security improvement for asymmetric cryptosystem based on spherical wave illumination

被引：32

作者：

Ding, Xiangling ^{[1
]}

Deng, Xiaopeng ^{[1
]}

Song, Kehui ^{[1
]}

Chen, Guangyi ^{[2
]}

机构：

[1] Huaihua Univ, Dept Phys & Informat Engn, Huaihua 418008, Peoples R China

[2] Hunan Agr Univ, Coll Informat Sci & Technol, Changsha 410128, Hunan, Peoples R China

来源：

APPLIED OPTICS | 2013年 / 52卷 / 03期

基金：

中国国家自然科学基金;

关键词：

OPTICAL-IMAGE ENCRYPTION; TRUNCATED FOURIER-TRANSFORMS; GERCHBERG-SAXTON ALGORITHM; FRESNEL DOMAIN; PHASE RETRIEVAL; SYSTEMS; VERIFICATION; WAVELENGTH; CORRELATOR;

D O I：

10.1364/AO.52.000467

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

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. (C) 2013 Optical Society of America

引用

页码：467 / 473

页数：7

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