A chaos-based secure voice communication system

Author

Tang, K.W. ; Tang, Wallace K S

Author_Institution

Dept. of Electron. Eng., City Univ. of Hong Kong

fYear

2005

fDate

14-17 Dec. 2005

Firstpage

571

Lastpage

576

Abstract

In this paper, a chaos-based secure voice communication system is designed over user datagram protocol (UDP). The voice signal is encrypted by a stream cipher in which a fast 32-bit chaos-based pseudo-random number generator (PRNG) is embedded. The chaos-based PRNG consists of two parts, namely bit-generating and mixing, in order to generate a pseudo-random key stream. The randomness is verified with the up-to-date statistical testing suite. Together with the high sensitivity on the system parameters and the initial conditions of the chaotic maps, the encrypted voice signals are difficult to be eavesdropped. The proposed chaos-based encryption scheme is demonstrated to be simple and fast, with a throughput about three times that of DES

Keywords

chaotic communication; cryptography; random number generation; statistical testing; telecommunication security; transport protocols; voice communication; UDP; chaos; encryption scheme; pseudo-random key stream; pseudo-random number generator; secure voice communication system; stream cipher; up-to-date statistical testing; user datagram protocol; Chaotic communication; Consumer electronics; Costs; Cryptography; Data engineering; NIST; Privacy; Protocols; Signal design; Web and internet services; chaotic maps; random number; secure communication;

fLanguage

English

Publisher

ieee

Conference_Titel

Industrial Technology, 2005. ICIT 2005. IEEE International Conference on

Conference_Location

Hong Kong

Print_ISBN

0-7803-9484-4

Type

conf

DOI

10.1109/ICIT.2005.1600703

Filename

1600703