Abstract
There are many different methods in use to scrample voice signals. Two of them seem to be of special importance: band-splitting and time-division. In existing devices for scrambling analog signals often only on of these methods is implemented. However, newer equipment, which is realized by digital circuitry, allow us to use both methods, band splitting and time division, at the same time.
The work presented in this paper was partially supported by the Oesterreichischen Fonds zur Foerderung der Wissenschaftlichen Forschung under EWF-Project Nr 4141.
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© 1983 Springer-Verlag Berlin Heidelberg
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Pichler, F. (1983). Analog Scrambling by the General Fast Fourier Transform. In: Beth, T. (eds) Cryptography. EUROCRYPT 1982. Lecture Notes in Computer Science, vol 149. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-39466-4_11
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DOI: https://doi.org/10.1007/3-540-39466-4_11
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