Generation of the chaotic keys on the fly for AES encryption system

Haitham A. Mohamed, A. Madian, A. Abdel-Hafez, W. Anis
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引用次数: 1

Abstract

This paper proposes a safe and effective method to generate the subkeys that are used in the Advanced Encryption Standard (AES) algorithm for data encryption applications. The suggested method relies upon the Pseudo-Random Number Generator (PRNG) that is created from the improved Lorenz chaotic system. The output of PRNG is exploited as a key schedule for generating AES subkeys where the output is characterized by having an infinite periodic length. This method can be used in high-speed applications since no hardware multipliers are utilized so it gives the best hardware performance. Simulation and Synthesis of the suggested method are done by using the ISE 14.7 and analyzed by MATLAB and the NIST mathematical suite that was included, this method only made use of 4% from the Virtex 5 FPGA kit's slices and operating frequency reached a maximum of 242MHz.
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AES加密系统中混沌密钥的动态生成
本文提出了一种安全有效的生成用于数据加密应用的高级加密标准(Advanced Encryption Standard, AES)算法的子密钥的方法。该方法基于改进的洛伦兹混沌系统产生的伪随机数发生器(PRNG)。PRNG的输出被用作生成AES子密钥的密钥调度,其输出具有无限周期长度的特征。这种方法可以用于高速应用程序,因为没有使用硬件乘法器,所以它提供了最好的硬件性能。利用ISE 14.7对所建议的方法进行了仿真和综合,并通过MATLAB和NIST数学套件进行了分析,该方法仅利用了Virtex 5 FPGA套件中4%的切片,工作频率最高达到242MHz。
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