基于现场可编程门阵列技术的混沌数字通信系统——设计与实现

提出了基于IEEE-754标准和现场可编程门阵列(FPGA)技术的混沌数字通信系统的通用设计与硬件实现的一种新方法，实现了混沌加密体制与传统密码体制的结合.根据Euler算法，对连续混沌系统作离散化处理，通过FPGA硬件设计混沌离散系统，使其产生作为密钥的混沌数字序列，其中加密算法采用置乱扩展技术，并对算法进行了分析.设计驱动响应式同步保密通信系统，构建包含信号在内的闭环，实现发送端与接收端离散混沌系统的同步.以网格蔡氏混沌系统为例，对该保密通信系统进行了FPGA硬件实验，给出了技术实现过程、算法流程、硬 关键词： 网格多涡卷蔡氏电路 置乱扩展矩阵 现场可编程门阵列技术 混沌数字通信系统

Chaotic digital communication system based on field programmable gate array technology——Design and implementation

A novel universal approach for design and implementation of chaotic digital communication system based on IEEE-754 standard and field programmable gate array technology (FPGA) is proposed, combing chaos encryption with traditional cipher realization. By using the Euler algorithm and appropriate discrete processing, the continuous chaotic system is converted to a discrete chaotic system. Using FPGA hardware design system, digital chaotic sequence is generated as the key. Scrambling and expansion encryption algorithm is realized and analyzed. Driven and response of secure communication system is designed by constructing a loop including the signal and achieving chaotic synchronization between sender and receiver. Taking grid Chua chaotic system as an example, the secure communication system using FPGA hardware platform is implemented. The technical development process, algorithm flow chart, hardware design and realization result are also given.