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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、硬件设计与实现结果.
A new method of universal design and hardware implementation of chaotic digital communication system based on IEEE-754 standard and field programmable gate array (FPGA) technology is proposed, which realizes the combination of chaotic encryption system and traditional cryptosystem.According to Euler algorithm, The discretization of continuous chaotic system is made, and the chaotic discrete system is designed by FPGA hardware to produce the chaotic digital sequence as the key. The encryption algorithm adopts the scramble and extend technology, and the algorithm is analyzed. Design-driven response synchronous secure Communication system, a closed loop including signal is constructed to realize the synchronization of the discrete chaotic systems at the sending end and the receiving end.With the grid Chua system as an example, FPGA hardware experiments are carried out on the secure communication system, and the technical realization process is given, Algorithm flow, hardware design and implementation results.