DocumentCode
1327482
Title
A new key generation method for frequency-domain speech scramblers
Author
Woo, Raymond W. ; Leung, Cyril
Author_Institution
Dept. of Electr. Eng., British Columbia Univ., Vancouver, BC, Canada
Volume
45
Issue
7
fYear
1997
fDate
7/1/1997 12:00:00 AM
Firstpage
749
Lastpage
752
Abstract
This paper describes a method which uses “derangement” permutations as scrambling keys in a frequency-domain speech scrambling system. Subjective tests based on the number test confirm that such keys produce scrambled speech with virtually no residual intelligibility. A new derangement generation algorithm is introduced for key generation. This algorithm maps each integer g, in the range of 0⩽g<(n-1)!, to a distinct derangement of 2 elements,
Keywords
cryptography; frequency-domain analysis; speech coding; speech intelligibility; speech processing; algorithm; derangement generation algorithm; derangement permutations; frequency-domain speech scramblers; frequency-domain speech scrambling system; key generation method; number test; residual intelligibility; scrambled speech; scrambling keys; subjective tests; Algorithm design and analysis; Codes; Communications Society; Frequency; Hamming distance; High definition video; Security; Signal processing; Speech analysis; Testing;
fLanguage
English
Journal_Title
Communications, IEEE Transactions on
Publisher
ieee
ISSN
0090-6778
Type
jour
DOI
10.1109/26.602572
Filename
602572
Link To Document