基于微控制单元的彩色图像加密无线通信方案  

A MCU-Based Color Image Encryption and Communication Scheme for Wireless Channel

作　　者：贾晓霞 邢进生[2] Jia Xiaoxia;Xing Jinsheng(Department of Computer Science and Technology,Taiyuan University,Taiyuan 030000,China;College of Mathematics and Computer Science,Shanxi Normal University,Linfen 041081,China)

机构地区：[1]太原学院计算机科学与技术系,山西太原030000 [2]山西师范大学数学与计算机科学学院,山西临汾041081

出　　处：《南京师大学报（自然科学版）》2022年第2期98-105,共8页Journal of Nanjing Normal University(Natural Science Edition)

基　　金：山西省软科学基金资助项目(2011041033-03);山西省高等学校教学改革创新项目(J2021779);山西省教育科学“十四五”规划课题(GH-21403).

摘　　要：为解决无线信道中的彩色图像通信安全问题,提出了一种基于微控制单元(micro controller units,MCU)的彩色图像实时加密通信方案.利用所提密码系统提高混沌序列的随机性,通过基于混沌映射的伪随机数生成器(pseudo random number generator,PRNG)和XOR操作进行图像加密,并通过RS-232端口发送嵌入式加密系统的输出.在PIC 16F873A微控制器上实施了提出的方案,并在无线链路上进行了实验.结果表明,与其他优秀加密方法相比,所提方案提供了更高的安全性,可抵御各种已知攻击.此外,使用双浮点精度的PRNG的处理速度为13.52 Mbit/s,能够满足现实应用的实时通信要求.In order to solve the security problem of color image communication in wireless channel,a real-time encryption and communication scheme for color images based on micro controller units(MCU)is proposed.The proposed cryptographic system is used to improve the randomness of the chaotic sequence,the image is encrypted through a pseudo-random number generator(PRNG)based on chaotic mapping and XOR operation,and the output of the embedded encryption system is sent through the RS-232 port.The proposed scheme was implemented on the PIC 16F873A microcontroller,and experiments were carried out on the wireless link.The results show that the proposed encryption scheme provides a high degree of security,can resist various known attacks,and has better security performance than classic encryption algorithms.In addition,the processing speed of the proposed PRNG with double floating point precision is 13.52 Mbit/s,which can meet the real-time communication requirements of practical applications.

关 键 词：混沌映射 伪随机数字生成器 微控制单元 芯片上系统 机器到机器 

分 类 号：TN918[电子电信—通信与信息系统] TP391[电子电信—信息与通信工程]