Asymmetric cryptosystem based on phase-truncated Fourier transforms

被引：537

作者：

Qin, Wan ^{[1
]}

Peng, Xiang ^{[1
]}

机构：

[1] Shenzhen Univ, Minist Educ & Guangdong Prov, Coll Optoelect Engn, Key Lab Optoelect Devices & Syst, Shenzhen, Peoples R China

来源：

OPTICS LETTERS | 2010年 / 35卷 / 02期

基金：

中国博士后科学基金; 中国国家自然科学基金;

关键词：

OPTICAL SECURITY; PLAINTEXT ATTACK; FRESNEL DOMAIN; SYSTEMS; KEYS;

D O I：

10.1364/OL.35.000118

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We propose an asymmetric cryptosystem based on a phase-truncated Fourier transform. With phase truncation in Fourier transform, one is able to produce an asymmetric ciphertext as real-valued and stationary white noise by using two random phase keys as public keys, while a legal user can retrieve the plaintext using another two different private phase keys in the decryption process. Owing to the nonlinear operation of phase truncation, high robustness against existing attacks could be achieved. A set of simulation results shows the validity of proposed asymmetric cryptosystem. (C) 2010 Optical Society of America

引用

页码：118 / 120

页数：3

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