Dual-channel in-line digital holographic double random phase encryption.

Dual-channel in-line digital holographic double random phase encryption.
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DOI:
10.1016/j.optcom.2012.06.056
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发表时间:
2012-10-01
影响因子:
2.4
通讯作者:
Rao, D. V. G. L. N.
Rao, D. V. G. L. N.
中科院分区:
物理与天体物理3区
文献类型:
--
作者:
Das, Bhargab;Yelleswarapu, Chandra S.;Rao, D. V. G. L. N.

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我们提出了一种使用数字全息和虚拟光学对2D/3D对象进行编码的稳健加密方法。利用我们最近开发的双平面同轴数字全息技术,两个同轴数字全息图被记录在两个不同的平面上,并使用两种不同的双随机相位加密配置独立地进行加密。使用两个相互排斥的加密通道的过程使系统对攻击更加健壮,因为为了获得可识别的重建,两个通道都应该被准确地解密。结果表明,即使在解密过程中使用的正确相位密钥的部分接近75%,重建对象也是不可识别的。通过评估SNR和MSE来验证系统是否具有抗盲解密的能力。对所提方法的有效性和相关参数的灵敏度进行了定量分析和说明。
We present a robust encryption method for the encoding of 2D/3D objects using digital holography and virtual optics. Using our recently developed dual-plane in-line digital holography technique, two in-line digital holograms are recorded at two different planes and are encrypted using two different double random phase encryption configurations, independently. The process of using two mutually exclusive encryption channels makes the system more robust against attacks since both the channels should be decrypted accurately in order to get a recognizable reconstruction. Results show that the reconstructed object is unrecognizable even when the portion of the correct phase keys used during decryption is close to 75%. The system is verified against blind decryptions by evaluating the SNR and MSE. Validation of the proposed method and sensitivities of the associated parameters are quantitatively analyzed and illustrated.
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