摘要
提出把双随机相位编码中的相位密钥记录为数字全息图,以实现密钥的复制。这能使用户远程访问密文时,可以通过相应的相移算法从记录的数字全息图中重构出相位密钥,并解密得到原始图像。给出了一种可能的应用方案,并分析了CCD噪声对相位密钥重构质量的影响。
A phase-key duplication technique is introduced. The phase-key in the doudle random-phase encoding system is recorded as digital holograms for this purpose. Therefore,the user who remotely access the encrypted data can recover the original image with the phase-key reconstructed by use of a corresponding phase-shifting algorithm from the recorded holograms. We analyze the influence of the noise in the COD camera on the recording process to the reconstruction of the phase-key. In addition,we also present a possible application of the technique of phase-key duplication based on digital holography.
出处
《光电子．激光》
EI
CAS
CSCD
北大核心
2006年第7期884-886,共3页
Journal of Optoelectronics·Laser
基金
国家自然科学基金资助项目(60277027)
关键词
光学加密
数字全息术
双随机相位编码
密钥复制
optical encryption
digital holography
double random-phase encoding
phase-key replication
