Known-plaintext attack on encryption domain independent optical asymmetric cryptosystem

被引：59
|
作者：
Rajput, Sudheesh K. [1 ]
Nishchal, Naveen K. [1 ]
机构：
[1] Indian Inst Technol Patna, Dept Phys, Patna 800013, Bihar, India
来源：
OPTICS COMMUNICATIONS | 2013年 / 309卷
关键词：
Image processing; Image encryption; Phase retrieval; Fractional Fourier transform; TRUNCATED FOURIER-TRANSFORMS; GERCHBERG-SAXTON ALGORITHM; RANDOM-PHASE KEYS; FRESNEL DOMAIN; FRACTIONAL FOURIER; RETRIEVAL;
D O I：
10.1016/j.optcom.2013.06.036
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
In this paper, we show that amplitude- and phase-truncation-based optical asymmetric cryptosystem is vulnerable to known-plaintext attack. The decryption keys are generated with the help of modified Gerchberg-Saxton phase retrieval algorithm from known-plaintext and ciphertext. With the help of the generated keys, the encrypted image, which is encrypted using encryption keys placed in either of the domains (Fourier, Fresnel, or fractional Fourier domain) is decrypted successfully. The vulnerability is proved through the results of computer simulation. (C) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码：231 / 235
页数：5
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