基于信息安全的易失性USB存储设备设计  

Design of Volatile USB Storage Device Based on Information Security

作　　者：钟午杰 潘子晴 王永炜 石功成 张成伟 钟国辉 Zhong Wujie;Pan Ziqing;Wang Yongwei;Shi Gongcheng;Zhang Chengwei;Zhong Guohui(School of Electronic Information and Communications,Huazhong University of Science and Technology,Wuhan 430074,China)

机构地区：[1]华中科技大学电子信息与通信学院,武汉430074

出　　处：《单片机与嵌入式系统应用》2022年第9期41-44,共4页Microcontrollers & Embedded Systems

基　　金：国家重点研发计划(2018YFB0805003)。

摘　　要：通用串行总线(USB)是一种大容量存储设备广泛使用的硬件接口,它具有高传输速度、容易携带等特点,被广泛应用在日常生活中,但也使得USB大容量存储设备中的数据容易被窃取。传统的数据保密方式一般通过认证系统来防止信息泄露,这种方法可以在一定程度上保障数据的安全性,但也存在认证失效或硬件暴力破解的风险。提出了一种基于SDRAM存储介质和Cortex-M4处理器的硬件防泄露方案,可以保证USB大容量存储设备断电一定时间后数据丢失,以防被硬件暴力破解,避免泄露和遗失。Universal Serial Bus(USB)is a widely used hardware interface for mass storage devices.USB MSDs are widely used in daily life,because they can provide high transmission speed and are relatively convenient to carry.But these characteristics also make the data in USB MSDs easy to attack and steal.Traditional data security methods generally use authentication systems to prevent information leakage.This method can guarantee data security to a certain extent,but there is also the risk of authentication failure or hardware brute force cracking.This article proposes a hardware security solution based on SDRAM storage media and Cortex-M4 microprocessor,which can ensure that the data in USB MSDs is lost after they are disconnected from the host for several minutes.

关 键 词：通用串行总线 大容量存储设备 同步动态随机存储器 STM32 

分 类 号：TP399[自动化与计算机技术—计算机应用技术]