Impulse attack free double-random-phase encryption scheme with randomized lens-phase functions
Impulse attack free double-random-phase encryption scheme with randomized lens-phase functions
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DOI：
10.1364/ol.34.000331
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发表时间：
2009-02-01
期刊：
影响因子：
3.6
通讯作者：
Singh, Kehar
中科院分区：
文献类型：
--
作者：
Kumar, Pramod;Kumar, Arvind;Singh, Kehar
传统基于傅里叶的双随机相位加密（DRPE）技术的安全性容易受到脉冲攻击，因为增量函数的傅里叶变换（FT）会产生单位函数。为了抵消这种攻击，通过将透镜的相位因子与随机相位函数相乘来修改透镜的相位因子。由于随机透镜相位函数对 FT 的修改，修改后的 FT (MFT(LR)) 给出了 delta 函数输入的随机输出。在DRPE技术中采用MFT(LR)增强了安全特性，使加密系统更安全，免受脉冲攻击。给出了数值和实验结果以验证所提出的技术。 (C) 2009 美国光学学会
Security of the conventional Fourier-based double-random-phase encryption (DRPE) technique is prone to impulse attacks, as the Fourier transform (FT) of a delta function results in a unity function. To negate such an attack, the phase factors of the lenses are modified by multiplying these with random-phase functions. Owing to this modification of the FT as a result of the randomized lens phase function, a modified FT (MFT(LR)) gives the random output for a delta function input. Employing MFT(LR) in the DRPE technique enhances the security features and makes the encryption system safer from the impulse attack. Numerical and experimental results are given for the validation of the proposed technique. (C) 2009 Optical Society of America