基于51单片机的硬件加密锁

本科学生主题论文2014年4月23日论文题目：基于51单片机的硬件加密锁的设计与实现学院：电子工程学院年级：2011专业：电子信息工程姓名：陈丽君学号：20114117指导教师：王英丽I摘要单片机是把主要计算机功能部件都集成在一块芯片上的微型计算机。单片机即单片微型计算机（Single-ChipMicrocomputer），是集CPU,RAM,ROM,定时，计数和多种接口于一体的微控制器。其中51单片机是各种单片机中最为典型和最有代表性的一种,广泛应用于各个领域。本课题选择MCS-51单片机为核心控制元件，设计了一个日常生活中用到的硬件加密锁系统。该系统是由单片机系统及MAX232组成。使用单片机汇编语言进行编程，实现了硬件加密锁的功能本论文主要介绍了硬件加密锁的软、硬件部分的设计，以及在设计、调试过程中遇到的问题及解决方案。经过实践证明，本课题设计的该系统结构简单，稳定，造价成本低，功能完全，具有很强的实用性。关键词8051单片机；硬件加密锁系统；MAX232AbstractIIThesingleslicemachineisthemicrocomputerwhichallintegratesmaincalculatorfunctionpartsonapieceofchipsingleslicemachinenamelysingleslicemicrocomputer(theMicrocomputeroftheSingle-Chip),gatherCPU,RAM,ROM,counttoconnectinthetinycontrollerofintegralwholewithvarietyinfixedtimeAmongthem51singleslicemachinesisvarioussingleslicemachineinisatypicalmodelmostandhaverepresentative1kindmost,extensivelyappliedineachrealm.ThistopicchoiceMCS-51singleslicemachineisacorecontrolcomponent,designedadailylifeconvenientarriveofthehardwareencryptlocksystemthatsystemconstitutestofromsingleslicemachinesystemandMAX232.Usingthesingleslicemachineeditscollectedmaterialslanguagetocarryonweavingadistance,thefunctionwhichcarriesouthardwaretoencryptalockoriginallythethesismainlyintroducedhardwaretoencrypttolockofsoft,thedesignofhardwarepart,andmeetinthedesign,adjusttrytheprocessoftheproblemandthesolutionpassbytopracticeacertificate,thesystem'sstructureof[with]thistopicdesignsimple,stabilize,buildpricecostlow,functioncomplete,haveverystrongfunction.KeywordsSingleChipComputer805151ThehardwareencryptslocksystemMAX232目录摘要............................................................................................................................................IAbstract.....................................................................................................................................I前言...........................................................................................................................................1第一章绪论.............................................................................................................................11.1课题背景.....................................................................................................................11.1.1课题的国内外现状.........................................................................................11.1.2课题的发展趋势.............................................................................................21.1.3本课题研究的主要内容.................................................................................41.2本章小结....................................................................................................................5第二章总体方案与论证.........................................................................................................52.18051单片机...............................................................................................................52.1.18051简介........................................................................................................52.2本章小结....................................................................................................................9第三章硬件电路设计...........................................................................................................103.1设计部分..................................................................................................................103.1.1硬件部分.......................................................................................................103.2本章小结..................................................................................................................15第四章软件电路设计...........................................................................................................154.1程序框图..................................................................................................................154.1.1软件设计的主程序流程图...........................................................................154.1.2软件电路设计...............................................................................................164.2系统调试..................................................................................................................174.3测试过程..................................................................................................................174.4本章小结..................................................................................................................18结论.........................................................................................................................................19参考文献.................................................................................................................................20致谢.........................................................................................................................................21基于51单片机的硬件加密锁的设计与实现1前言电子产品被竞争对手破解,这往往给生产厂家造成很大损失。针对这种现象,很多厂家采用了加密技术来防止产品被破解。目前,大多数的厂家采用的是使用软件方法的加密,方法主要有[1]:用软件的方法把产品中使用到的部分程序代码隐藏或掩盖起来、使用混淆的办法把部分程序代码和数据混同起来、使用