Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)
- 1999.11c
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- Pages.700-702
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- 1999
Speech Encryption Scheme Using Frequency Band Scrambling
대역 스크램블을 이용한 음성 보호방식
- Ji, Hyung-Kun (Dongguk University) ;
- Lee, Dong-Wook (Dongguk University)
- Published : 1999.11.20
Abstract
The protection of data which we want to keep secret from invalid users has become a main topic nowadays. This paper introduces a encryption scheme for protecting speech signals from eavesdropping. The proposed encryption scheme adopts a secure voice cryptographic algorithm based on the scrambling in frequency band. In order to improve the conventional speech signal encryption scheme, we have randomly permuted DCT coefficients of speech signal. Simulation results are included to show the performance of the proposed algorithm for secure transmission of speech signals.
Keywords