Discrete Chaotic Circuit Design and Performance Analysis

Due to the deterministic feature of chaotic motion and proximity of traditional cipher design requirements, Chaos Stream Cipher is attracted widely attention in terms of research nowadays. This paper describes the digital chaotic stream cipher circuit design, and comparison of three discrete chaotic systems and the analysis of their main feature of discrete chaos sequence generator, including ergodicity, the initial sensitivity, phase space characteristics and bifurcation characteristics these four areas, and finally prove that the three discrete chaotic sequence still have chaos characteristics, for the foundation of future digital chaotic stream cipher application.