Linux系统下U盘控制与管理系统的设计与实现

发布时间：2018-03-06 06:41

本文选题：加密U盘　切入点：虚拟磁盘　出处：《国防科学技术大学》2012年硕士论文　论文类型：学位论文

【摘要】：随着计算机技术的飞速发展，USB存储设备的应用也越来越广泛，U盘（U-disk）作为一种即插即用的USB设备，以其小巧携带方便、存储容量大、性能可靠、传输速度快等优点成为日常生活中必不可少的移动存储设备。人们在享受U盘易用性的同时，也面临着它带来的一系列数据泄露问题，因此人们对U盘这种存储信息介质的安全要求也越来越高。首先，本文分析了目前U盘在信息存储领域中带来的安全威胁和存在的安全问题，从硬件和软件分析了U盘在控制和保护方面的国内外研究现状，并总结了它们的优缺点。其次，针对现有U盘安全存储控制与管理研究方面的不足，提出了一种基于虚拟磁盘的U盘控制与管理系统（UCMS），通过把普通U盘制作成具有特殊格式的加密U盘来实现U盘的安全存储与管理，此系统集身份认证和数据透明加解密于一体，并提供了安全锁定和申请外带功能；接着，本文介绍了UCMS系统的总体设计过程，主要包括U盘格式的设计、U盘识别模块的设计、数据加/解密的设计和U盘管理模块的设计。其中，前两种设计实现了加密U盘在非UCMS系统下是不被识别的和普通U盘在UCMS系统下也是不被识别的；数据加/解密模块从虚拟磁盘驱动程序出发，实现了数据的透明加/解密；U盘管理模块为用户提供了良好的图形管理工具。最后，本文介绍了UCMS系统的实现过程，结合UCMS系统的总体设计，依次完成了加密U盘格式的设计、U盘识别模块、数据加解密模块和图形界面管理模块。图形管理界面实现之后，对系统进行了功能测试，测试表明本系统能够实现总体设计的集身份认证和数据透明加解密的所用功能。
[Abstract]:With the rapid development of computer technology, USB storage devices are more and more widely used. As a kind of plug and play USB device, U-disk device is easy to carry, has large storage capacity and reliable performance. The advantages of high transmission speed have become an indispensable mobile storage device in daily life. While enjoying the ease of use of the U disk, people are also faced with a series of data leakage problems brought about by it. Therefore, the security requirements of U disk, a storage information medium, are becoming more and more high. Firstly, this paper analyzes the security threats and existing security problems of USB disk in the field of information storage, analyzes the status quo of control and protection of USB disk at home and abroad from hardware and software, and summarizes their advantages and disadvantages. Secondly, aiming at the deficiency of the existing U disk security storage control and management research, In this paper, a USB disk control and management system based on virtual disk is proposed. By making the ordinary U disk into an encrypted U disk with a special format, the security storage and management of the U disk are realized. The system integrates identity authentication and transparent encryption and decryption of data. Then, this paper introduces the overall design process of UCMS system, including the design of U disk format, the design of U disk identification module. The design of data encryption / decryption and the design of U disk management module. Among them, the first two designs realize that the encrypted U disk is not recognized under the non UCMS system and the ordinary U disk is not recognized under the UCMS system. The data encryption / decryption module implements the transparent encryption / decryption of the data from the virtual disk driver, and the U disk management module provides a good graphics management tool for the user. Finally, this paper introduces the implementation process of UCMS system, combining with the overall design of UCMS system, the design of encrypted U disk format and U disk recognition module are completed in turn. Data encryption and decryption module and graphical interface management module. After the implementation of the graphical management interface, the system is tested. The test results show that the system can realize the functions of set identity authentication and transparent encryption and decryption of data.
【学位授予单位】：国防科学技术大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TP333;TP309

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