A new speech signal scrambling method for secure communications: theory, implementation, and security evaluation
| Autor: | Romano Fantacci, D. Maffucci, E. Del Re |
|---|---|
| Rok vydání: | 1989 |
| Předmět: |
Half-band filter
Signal processing Theoretical computer science Computer Networks and Communications business.industry Computer science Cryptography Frame synchronization Speech processing Filter bank Scrambling Filter design symbols.namesake Multidimensional signal processing Fourier analysis Digital image processing symbols Digital signal Electrical and Electronic Engineering business Digital filter Computer hardware Digital signal processing |
| Zdroj: | IEEE Journal on Selected Areas in Communications. 7:474-480 |
| ISSN: | 0733-8716 |
| DOI: | 10.1109/49.17710 |
| Popis: | A two-dimensional signal-scrambling method implemented by digital signal-processing techniques that eliminate the need for frame synchronization without impairing security is presented. Such techniques include short time Fourier analysis and the filter bank concept. The use of special digital finite-impulse-response filters, which make it possible to implement the system algorithm completely via commercial processor software, is discussed. As a result, the system can be configured with very little hardware. Methods for determining available keyspace and selecting keys are also presented. > |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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