基于双超混沌映射的伪随机序列发生器设计  

Design of pseudo-random number generator based on double hyperchaotic mapping

作　　者：张爽 李震 Zhang Shuang;Li Zhen(Faculty of Big Data and Information Engineering,Guiyang Institute of Humanities and Technology,Guiyang,Guizhou 550025,China;College of Big Data and Information Engineering,Guizhou University)

机构地区：[1]贵阳人文科技学院大数据与信息工程学院,贵州贵阳550025 [2]贵州大学大数据与信息工程学院

出　　处：《计算机时代》2023年第10期40-44,49,共6页Computer Era

基　　金：贵州科技重大专项计划(20183001);贵阳人文科技学院单列自筹项目(2022rwjs050);贵州省省级科技计划项目资助(黔科合基础-ZK[2023]一般053);贵州大学引进人才科研基金资助(贵大人基合字(2022)14号)。

摘　　要：有限精度下的混沌退化问题影响伪随机序列发生器性能。本文基于2D-SLIM和2D-LSCM超混沌系统提出一种迭代序列耦合的伪随机序列发生器方案。首先采用随机周期扰动方式防止混沌退化,随后对迭代序列进行耦合输出,并构建伪随机序列发生器模型。然后采用SP800-22 Revision 1a测试标准对生成序列进行随机性检测。实验结果表明,伪随机序列具有良好的随机性能。此外,基于方案生成的伪随机序列发生器设计了一种音频数据加密方案并对其进行仿真验证。The chaotic degradation problem under finite precision affects the performance of the pseudo-random generator.Therefore,an iterative sequence coupling pseudo-random generator scheme is proposed based on the 2D-SLIM and 2D-LSCM hyperchaotic system.Firstly,the random periodic disturbance method is used to prevent the chaos degradation,and then the iterative sequences are coupled to the output and the pseudo-random sequence generator model is constructed.The SP800-22 Revision 1a test standard is used to test the randomness of the generated sequence,and the results show that the pseudo-random sequence has good randomness.Furthermore,an audio data encryption scheme is designed based on the proposed pseudo-random sequence generator and simulated to verify it.

关 键 词：伪随机序列发生器 随机性检测 音频数据加密 超混沌系统 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]