Title :
A digital voice secure communication system based on logistic-mapping in wavelet domain chaotic modulation
Author :
Que, Dashun ; Lu, Ling ; Wang, Hong ; Ding, Yuanyuan
Author_Institution :
Inst. of Inf. Technol., Wuhan Technol. Univ., China
fDate :
31 Aug.-4 Sept. 2004
Abstract :
In this paper a new scheme of digital voice secure communication system is proposed based on chaotic modulation without additional synchronization. The modulation sequence, generated by chaotic logical mapping, is used to encrypt the digital voice signal. In order to hide the characteristics of information signal, the modulation is based on wavelet transform. The method of chaotic masking is also used to randomize the cryptograph. Simulating and analyzing show that the chaotic encrypting system can improve the security and can resist the decipher analysis. Furthermore, the system is easy to actualize.
Keywords :
Internet; cryptography; digital communication; modulation; speech processing; telecommunication security; voice communication; wavelet transforms; additional synchronization; chaotic encrypting system; chaotic logical mapping; chaotic masking; decipher analysis; digital voice secure communication system; digital voice signal encryption; logistic-mapping; modulation sequence; wavelet domain chaotic modulation; wavelet transform; Analytical models; Chaotic communication; Cryptography; Digital modulation; Information security; Resists; Signal generators; Signal mapping; Wavelet domain; Wavelet transforms;
Conference_Titel :
Signal Processing, 2004. Proceedings. ICSP '04. 2004 7th International Conference on
Print_ISBN :
0-7803-8406-7
DOI :
10.1109/ICOSP.2004.1442263
