{"title":"A new speech scrambling method: Comparative analysis and a fast algorithm","authors":"V. Delić, V. Šenk, V. S. Mibsevic","doi":"10.5281/ZENODO.36005","DOIUrl":null,"url":null,"abstract":"Conventional speech scrambling concept is based on permutation of time segments and/or frequency subbands. Although this approach is regarded as an insecure speech encryption method, almost all published scramblers are of that type. W e found out that a linear combination based on Hadamardm atrices instead of conventional permutation gives better cryptographic performances, maintaining all the good features of the scrambling concept. The new scrambling method provides a large key space and a simpler key selection. It attainsnegligible residualintelligibility and higher degree of cryptanalytic immunity. The price of these great improvements is a potential complexity increase. That is why we designed a fast algorithm for the new scrambling method.","PeriodicalId":282153,"journal":{"name":"1996 8th European Signal Processing Conference (EUSIPCO 1996)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"1996-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"3","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"1996 8th European Signal Processing Conference (EUSIPCO 1996)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.5281/ZENODO.36005","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 3
Abstract
Conventional speech scrambling concept is based on permutation of time segments and/or frequency subbands. Although this approach is regarded as an insecure speech encryption method, almost all published scramblers are of that type. W e found out that a linear combination based on Hadamardm atrices instead of conventional permutation gives better cryptographic performances, maintaining all the good features of the scrambling concept. The new scrambling method provides a large key space and a simpler key selection. It attainsnegligible residualintelligibility and higher degree of cryptanalytic immunity. The price of these great improvements is a potential complexity increase. That is why we designed a fast algorithm for the new scrambling method.