A frequency aliasing approach to chaos-based cryptosystems

Author

Li, Kun ; Soh, Yeng Chai ; Zhang, Cishen

Author_Institution

Sch. of Electr. & Electron. Eng., Nanyang Technol. Univ., Singapore

Volume

51

Issue

12

fYear

2004

Firstpage

2470

Lastpage

2475

Abstract

In this paper, a chaos-based cryptosystem using sampled chaos signals with frequency-domain aliasing is proposed. In this scheme, a higher degree of randomness of the running-key sequence is obtained, and an additional random seed consisting of the sampling frequency as the parameter is introduced. This leads to an enhancement of the cryptosystem security. Numerical and simulation results of a Lorenz cryptosystem are given to demonstrate the performance and effectiveness of the proposed approach.

Keywords

chaotic communication; cryptography; synchronisation; telecommunication security; Lorenz cryptosystem; chaos-based cryptosystems; cryptosystem security; frequency-domain aliasing; running-key sequence; sampled chaos signals; sampling frequency; synchronization; Chaos; Chaotic communication; Communication system security; Cryptography; Frequency domain analysis; Frequency synchronization; Numerical simulation; Power system security; Sampling methods; Spread spectrum communication; 65; Chaos; Lorenz system; cryptosystem; frequency aliasing; synchronization;

fLanguage

English

Journal_Title

Circuits and Systems I: Regular Papers, IEEE Transactions on

Publisher

ieee

ISSN

1549-8328

Type

jour

DOI

10.1109/TCSI.2004.836835

Filename

1364117