An encryption scheme based on phase-shifting digital holography and amplitude-phase disturbance  

作　　者：花丽丽 徐宁 杨庚 

机构地区：[1]College of Opto-Electronic Engineering, Nanjing University of Posts and Telecommunications [2]College of Computer, Nanjing University of Posts and Telecommunications

出　　处：《Chinese Physics B》2014年第6期206-211,共6页中国物理B（英文版）

基　　金：supported by the National Basic Research Program of China(Grant No.2011CB302903);the National Natural Science Foundation of China(Grant Nos.61272084 and 61202004);the Key Project of Natural Science Research of Jiangsu University,China(Grant No.11KJA520002)

摘　　要：In this paper, we propose an encryption scheme based on phase-shifting digital interferometry. According to the original system framework, we add a random amplitude mask and replace the Fourier transform by the Fresnel transform. We develop a mathematical model and give a discrete formula based on the scheme, which makes it easy to implement the scheme in computer programming. The experimental results show that the improved system has a better performance in security than the original encryption method. Moreover, it demonstrates a good capability of anti-noise and anti-shear robustness.In this paper, we propose an encryption scheme based on phase-shifting digital interferometry. According to the original system framework, we add a random amplitude mask and replace the Fourier transform by the Fresnel transform. We develop a mathematical model and give a discrete formula based on the scheme, which makes it easy to implement the scheme in computer programming. The experimental results show that the improved system has a better performance in security than the original encryption method. Moreover, it demonstrates a good capability of anti-noise and anti-shear robustness.

关 键 词：optical encryption phase-shifting holography SECURITY ROBUSTNESS 

分 类 号：O438.1[机械工程—光学工程]