Realization of Encryption on FPGA Based on Chaotic Signals Generated by Logistic Equation

混沌系统能产生具有对初值敏感、难以预测的性能良好的伪随机序列，很适于序列密码。采用逻辑斯特(Logistic)方程生成混沌序列加密信息，方法简单，硬件上便于实现。然后设计具体硬件实现方法，在现场可编程门阵列(FPGA)上实验，结果得到了验证。最后，针对Logistic方程加密的缺点，本文提出了优化方法 Chaotic systems can produce effective pseudo-random sequences. Chaotic sequences are suitable for stream ciphers because they are sensitive to the initial value and unpredictable. Information can be encrypted with chaotic se- quences generated by the Logistic equation, which is easy to be realized on hardware. The theory has been testified by the experimental result on hardware FPGA. In the end, the paper introduced the method to optimize the system.