Applying and Comparison of Chaotic-Based Permutation Algorithms for Audio Encryption  

作　　者：Osama M.Abu Zaid Medhat A.Tawfeek Saad Alanazi 

机构地区：[1]Department of Computer Science,Faculty of Computers and Information,Kafrelsheikh University,Egypt [2]Department of Computer Science,College of Computer and Information Sciences,Jouf University,KSA [3]Department of Computer Science,Faculty of Computers and Information,Menoua University,Egypt

出　　处：《Computers, Materials & Continua》2021年第6期3161-3176,共16页计算机、材料和连续体（英文）

摘　　要：This research presents,and claries the application of two permutation algorithms,based on chaotic map systems,and applied to a le of speech signals.They are the Arnold cat map-based permutation algorithm,and the Baker’s chaotic map-based permutation algorithm.Both algorithms are implemented on the same speech signal sample.Then,both the premier and the encrypted le histograms are documented and plotted.The speech signal amplitude values with time signals of the original le are recorded and plotted against the encrypted and decrypted les.Furthermore,the original le is plotted against the encrypted le,using the spectrogram frequencies of speech signals with the signal duration.These permutation algorithms are used to shufe the positions of the speech les signals’values without any changes,to produce an encrypted speech le.A comparative analysis is introduced by using some of sundry statistical and experimental analyses for the procedures of encryption and decryption,e.g.,the time of both procedures,the encrypted audio signals histogram,the correlation coefcient between specimens in the premier and encrypted signals,a test of the Spectral Distortion(SD),and the Log-Likelihood Ratio(LLR)measures.The outcomes of the different experimental and comparative studies demonstrate that the two permutation algorithms(Baker and Arnold)are sufcient for providing an efcient and reliable voice signal encryption solution.However,the Arnold’s algorithm gives better results in most cases as compared to the results of Baker’s algorithm.

关 键 词：Arnold’s cat map chaotic maps permutation algorithms speech encryption Baker’s chaotic map 

分 类 号：TN9[电子电信—信息与通信工程]