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FPGA implementation of sound encryption system based on fractional-order chaotic systems

机译：基于分数阶混沌系统的声音加密系统的FPGA实现

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This paper introduces design and FPGA implementation of sound encryption system based on a fractional-order chaotic system. Also, it presents the FPGA implementation of Tang, Yalcin, and Ozoguz fractional order chaotic systems. The Grunwald-Letnikov (GL) definition is used to generalize the investigated systems into the fractional-order domain. Also, the variation of parameters for each system is investigated against the window size of the GL definition. Xilinx ISE 14.5 is used to simulate the proposed design. Also, some hardware reduction techniques are applied to decrease hardware utilization and increase throughput. Moreover, Yalcin system is employed as a chaotic generator in a speech encryption algorithm. Security analysis techniques are presented to show the robustness of the proposed algorithm. They include basic perceptual and statistical aspects, the NIST tests, key space analysis, mean square error (MSE) and key sensitivity. Statistical analyses including correlation, histogram, spectrogram, and entropy analysis are presented. The system is implemented on Artix-7 FPGA with one clock latency. Finally, experimental results are illustrated.
机译：本文介绍了基于分数阶混沌系统的声音加密系统的设计和FPGA实现。此外，它还展示了Tang，Yalcin和Ozoguz分数阶混沌系统的FPGA实现。 Grunwald-Letnikov（GL）定义用于将研究的系统推广到分数阶域。此外，针对GL定义的窗口大小研究了每个系统的参数变化。 Xilinx ISE 14.5用于仿真所提出的设计。而且，一些硬件缩减技术被应用于降低硬件利用率并增加吞吐量。此外，在语音加密算法中，Yalcin系统被用作混沌发生器。提出了安全性分析技术以显示所提出算法的鲁棒性。它们包括基本的感知和统计方面，NIST测试，关键空间分析，均方误差（MSE）和关键灵敏度。介绍了统计分析，包括相关性，直方图，频谱图和熵分析。该系统以一个时钟延迟在Artix-7 FPGA上实现。最后，说明了实验结果。

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