Title :
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
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;
Journal_Title :
Circuits and Systems I: Regular Papers, IEEE Transactions on
DOI :
10.1109/TCSI.2004.836835
