Chen Jia-Shiang, Chen Yu-Bin, Hsu Pei-Feng, Nguyen-Huu Nghia, Lo Yu-Lung
Department of Mechanical Engineering, Center for Micro/Nano Science and Technology, National Cheng Kung University, Tainan City, Taiwan.
Opt Express. 2011 Apr 25;19(9):8187-99. doi: 10.1364/OE.19.008187.
This study employed the optical responses of periodic structures, multiple-variable functions with sufficient complexity, to develop a cryptographic scheme. The characteristics of structures could be delivered easily with the ciphertext, a series of numbers containing plaintext messages. Two optimization methods utilizing a genetic algorithm were adopted to generate the periodic structure profile as a critical encryption/decryption key. The robustness of methods was further confirmed under various limits. The ciphertext could only be decrypted by referring to the codebook after acquiring the pre-determined optical response. The confidentiality and large capacity of the scheme revealed the enhanced coding strategies here while the success of the scheme was demonstrated with the delivery of an example message.
本研究利用具有足够复杂性的周期性结构的光学响应来开发一种加密方案。结构的特征可以很容易地与密文一起传递，密文是一系列包含明文消息的数字。采用了两种利用遗传算法的优化方法来生成周期性结构轮廓作为关键的加密/解密密钥。在各种限制条件下进一步证实了这些方法的稳健性。只有在获得预定的光学响应后，才能通过参考码本来解密密文。该方案的保密性和大容量揭示了这里增强的编码策略，同时通过传递一条示例消息证明了该方案的成功。
