Barrera John Fredy, Mira-Agudelo Alejandro, Torroba Roberto
Opt Lett. 2014 May 15;39(10):3074-7. doi: 10.1364/OL.39.003074.
We report, to our knowledge for the first time, the experimental implementation of a quick response (QR) code as a "container" in an optical encryption system. A joint transform correlator architecture in an interferometric configuration is chosen as the experimental scheme. As the implementation is not possible in a single step, a multiplexing procedure to encrypt the QR code of the original information is applied. Once the QR code is correctly decrypted, the speckle noise present in the recovered QR code is eliminated by a simple digital procedure. Finally, the original information is retrieved completely free of any kind of degradation after reading the QR code. Additionally, we propose and implement a new protocol in which the reception of the encrypted QR code and its decryption, the digital block processing, and the reading of the decrypted QR code are performed employing only one device (smartphone, tablet, or computer). The overall method probes to produce an outcome far more attractive to make the adoption of the technique a plausible option. Experimental results are presented to demonstrate the practicality of the proposed security system.
据我们所知，我们首次报告了在光学加密系统中作为“容器”的二维码的实验实现。选择干涉配置中的联合变换相关器架构作为实验方案。由于无法一步实现，因此应用了对原始信息的二维码进行加密的复用过程。一旦二维码被正确解密，通过简单的数字程序消除恢复的二维码中存在的散斑噪声。最后，读取二维码后，原始信息被完全无任何形式降解地检索出来。此外，我们提出并实现了一种新协议，其中加密二维码的接收及其解密、数字块处理以及解密二维码的读取仅使用一个设备（智能手机、平板电脑或计算机）来执行。整体方法旨在产生一个更具吸引力的结果，以使该技术的采用成为一个可行的选择。给出了实验结果以证明所提出的安全系统的实用性。
