孙颖1, 2,
林邦姜2,
汤璇2,,,
王珊珊1,
张敏2,
谢宇芳2,
戴玲凤2,
骆佳彬2
1.辽宁工程技术大学软件工程学院 葫芦岛 125105
2.中国科学院海西研究院泉州装备制造研究中心 泉州 362200
基金项目:国家自然科学基金(61404069),辽宁省教育厅一般科研项目(LJYL048),辽宁省教育厅青年基金(LJ2017QL033)
详细信息
作者简介:肖成龙:男,1984年生,副教授,研究方向为信号处理与软硬件协同设计
孙颖:女,1994年生,硕士生,研究方向为保密通信与混沌密码学
林邦姜:男,1987年生,副研究员,研究方向为无线光通信
汤璇:女,1984年生,研究员,研究方向为无线光通信
王珊珊:女,1984年生,副教授,研究方向为软硬件协同设计与并行计算
张敏:女,1992年生,助理工程师,研究方向为无线光通信
谢宇芳:女,1992年生,助理工程师,研究方向为无线光通信
戴玲凤:女,1980年生,工程师,研究方向为无线光通信
骆佳彬:男,1991年生,助理工程师,研究方向为无线光通信
通讯作者:汤璇 xtang@fjirsm.ac.cn
中图分类号:TN918.91计量
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被引次数:0
出版历程
收稿日期:2019-04-03
修回日期:2019-09-18
网络出版日期:2019-10-15
刊出日期:2020-03-19
Double Encryption Method Based on Neural Network and Composite Discrete Chaotic System
Chenglong XIAO1,Ying SUN1, 2,
Bangjiang LIN2,
Xuan TANG2,,,
Shanshan WANG1,
Min ZHANG2,
Yufang XIE2,
Lingfeng DAI2,
Jiabin LUO2
1. School of Software, Liaoning Technical University, Huludao 125105, China
2. Quanzhou Institute of Equipment Manufacturing, Haixi Institutes, Chinese Academy of Sciences, Quanzhou 362200, China
Funds:The National Natural Science Foundation of China(61404069), The Liaoning Provincial Department of Education General Research Project(LJYL048), The Liaoning Provincial Department of Education Youth Fund Project(LJ2017QL033)
摘要
摘要:正交频分复用(OFDM)已被广泛应用于无线通信系统,其数据传输安全具有一定的实际意义。该文提出了一种双重加密方案,采用神经网络生成置乱矩阵实现第1次加密,通过基于Logistic映射与Sine映射的复合离散混沌系统产生的混沌序列进行第2次加密。该双重加密方案极大提升了OFDM通信系统的保密性,可以有效地防止暴力攻击。相比于单一的1维Logistic映射的混沌系统,基于Logistic映射与Sine映射的复合离散混沌系统具有更大的密钥空间。该文运用Lyapunov指数与NIST测试验证了该混沌系统的混沌特性及随机性,并仿真验证了双重加密方案的保密性能。仿真结果表明,该文所提出的加密方案密钥空间为4×1093,Lyapunov指数提高到0.9850,NIST测试中最大P值为0.9995。该双重加密方案可在不影响传输性能下极大提升OFDM通信系统的安全性。
关键词:保密通信/
正交频分复用/
复合离散混沌系统/
神经网络/
NIST测试
Abstract:Orthogonal Frequency Division Multiplexing(OFDM) is widely used in wireless communication systems, and its data transmission security has certain practical significance. A double encryption scheme is proposed which enhances the confidentiality of the OFDM communication system and can prevent brute force attacks significantly. Specifically, the first encryption is achieved by using neural network to generate the scrambling matrix, and the second encryption is implemented by chaotic sequence generating by composite discrete chaotic system based on Logistic mapping and Sine mapping. Moreover, it has larger secret key space compared with the single one-dimensional Logistic mapping chaotic system. The performance of double encryption is measured by verifying its chaotic characteristics and randomness (Lyapunov exponent and NIST) as well as its security performance in simulation. The results show that Lyapunov index is increased to 0.9850, and the maximum P-value in the NIST test is 0.9995 by using the proposed double encryption in this paper. It indicates such double encryption significantly improve the confidentiality of the OFDM communication system without affecting the transmission performance.
Key words:Secure communication/
Orthogonal Frequency Division Multiplexing(OFDM)/
Composite discrete chaotic system/
Neural networks/
NIST test
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