基于DFT-S-OFDM的网络信息安全加密传输仿真

Simulation of Network Information Security Encrypted Transmission Based on DFT-S-OFDM

为提高网络信息传输的安全性,实现网络信息的安全加密传输,提出一种基于DFT-S-OFDM的网络信息安全加密传输方法。针对DFT-S-OFDM技术的低频发送功率和低频平均峰值功率优点,将数据信号定义为一定数量的集合,通过密钥对信息实现重点加密,给出基于密钥的矩阵并引入到椭圆曲线方程中,完成密钥矩阵的矢量加密并给出最终加密信号;为提高加密质量,对最终信号的加密信息进行二次加密,建立基于DFT-S-OFDM技术的信号发送模型,将矢量加密信息通过模型内节点变换调频,再经子载波映射的方式转换为发送信号,传送至信号接收模型中,完成加密信息的传输。仿真结果证明,所提方法抗攻击性强、信息泄露率低、整体效率优异,对网络传输安全提供了有效的技术保障。

A secure encrypted transmission method of network information based on DFT-S-OFDM was studied for improving the security of network information transmission and realizing the secure encrypted transmission of network information. According to the advantages of low-frequency transmission power and low-frequency average peak power of DFT-S-OFDM technology, data signals were defined as a certain number of sets. In order to give the key based matrix and introduce it into the elliptic curve equation, the vector encryption of the key matrix was achieved and the final encrypted signal was given. For improving the encryption quality, the encrypted information of the final signal was re-encrypted. The signal transmission model based on DFT-S-OFDM technology was established. According to the nodes in the model, the vector encrypted information was transformed into frequency modulation and converted into a transmission signal by subcarrier mapping, then was transmitted to the signal receiving model. At last, the transmission of encrypted information was completed. The simulation results show that this method has strong anti attack, low information leakage rate and excellent overall efficiency, which indicates that this method provides an effective technical guarantee for network transmission security.