I^2C总线在增强单片机系统安全性中的应用  

Applications of I^2C Bus in Security Enhancement of Microcontroller System

作　　者：王忠平[1] 田作华[1] 

机构地区：[1]上海交通大学电子信息与电气工程学院,上海200240

出　　处：《测控技术》2007年第2期81-83,共3页Measurement & Control Technology

摘　　要：针对增强单片机系统安全性这一课题,提出了一种双机校验方法,即应用两块异构的单片机构成主从系统,通过软件模拟I2C总线进行互连通信,在主、从机端分别执行校验,以达到增强安全性的目的。A way to enhance the security of microeontroller system through an improved double check method is introduced. In this method, the master and slave microcontrollers communicate with each other through I^2C bus which is simulated in software way. The check process will be carried out at both sides. Based on the check results, the security status of system will be evaluated.

关 键 词：I^2C总线模拟 安全 AT89C52 P87LPC764 

分 类 号：TP368[自动化与计算机技术—计算机系统结构]