Stream cipher based on pseudorandom number generation with optical affine transformation
Stream cipher based on pseudorandom number generation with optical affine transformation
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DOI：
10.1364/ao.39.002340
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发表时间：
2000-05-10
期刊：
影响因子：
1.9
通讯作者：
Ichioka, Y
中科院分区：
文献类型：
--
作者：
Sasaki, T;Togo, H;Ichioka, Y
我们提出了一种新的，据我们所知，可以通过迭代光学变换实现的二维(2D)图像数据的流密码技术。流密码使用伪随机数生成器(PRNG)来生成伪随机位序列。该方法由光学元件实现的2-D仿射变换的迭代运算和变换后图像的模n相加组成。我们期望通过光学并行处理来有效地执行该方法。我们从安全强度的角度验证了该方法的性能，并用光学分形器阐明了光学实现中的问题。(C)2000年美国光学学会。OCS码：100.1160、200.3050、200.4960。
We propose a new, to our knowledge, stream cipher technique for two-dimensional (2-D) image data that can be implemented by iterative optical transformation. The stream cipher uses a pseudorandom number generator (PRNG) to generate a pseudorandom bit sequence. The proposed method for the PRNG is composed of the iterative operation of 2-D affine transformation achieved by optical components and by modulo-n addition of the transformed images. We expect efficient execution of the method by optical parallel processing. We verify the performance of the proposed method in terms of security strength and clarify problems on optical implementation by the optical fractal synthesizer. (C) 2000 Optical Society of America. OCIS codes: 100.1160, 200.3050, 200.4960.