关于网络空间安全的论文双语版怎么写

关于网络空间安全的论文双语版怎么写

1 绪论随着互联网的飞速发展，网络安全逐渐成为一个潜在的巨大问题。网络安全性是一个涉及面很广泛的问题，其中也会涉及到是否构成犯罪行为的问题。在其最简单的形式中，它主要关心的是确保无关人员不能读取，更不能修改传送给其他接收者的信息。此时，它关心的对象是那些无权使用，但却试图获得远程服务的人。安全性也处理合法消息被截获和重播的问题，以及发送者是否曾发送过该条消息的问题。大多数安全性问题的出现都是由于有恶意的人试图获得某种好处或损害某些人而故意引起的。可以看出保证网络安全不仅仅是使它没有编程错误。它包括要防范那些聪明的，通常也是狡猾的、专业的，并且在时间和金钱上是很充足、富有的人。同时，必须清楚地认识到，能够制止偶然实施破坏行为的敌人的方法对那些惯于作案的老手来说，收效甚微。网络安全性可以被粗略地分为4个相互交织的部分：保密、鉴别、反拒认以及完整性控制。保密是保护信息不被未授权者访问，这是人们提到的网络安全性时最常想到的内容。鉴别主要指在揭示敏感信息或进行事务处理之前先确认对方的身份。反拒认主要与签名有关。保密和完整性通过使用注册过的邮件和文件锁来实现。2 方案目标本方案主要从网络层次考虑，将网络系统设计成一个支持各级别用户或用户群的安全网络，该网在保证系统内部网络安全的同时，还实现与Internet或国内其它网络的安全互连。本方案在保证网络安全可以满足各种用户的需求，比如：可以满足个人的通话保密性，也可以满足企业客户的计算机系统的安全保障，数据库不被非法访问和破坏，系统不被病毒侵犯，同时也可以防止诸如反动淫秽等有害信息在网上传播等。需要明确的是，安全技术并不能杜绝所有的对网络的侵扰和破坏，它的作用仅在于最大限度地防范，以及在受到侵扰的破坏后将损失尽旦降低。具体地说，网络安全技术主要作用有以下几点：1．采用多层防卫手段，将受到侵扰和破坏的概率降到最低；2．提供迅速检测非法使用和非法初始进入点的手段，核查跟踪侵入者的活动；3．提供恢复被破坏的数据和系统的手段，尽量降低损失；4．提供查获侵入者的手段。网络安全技术是实现安全管理的基础，近年来，网络安全技术得到了迅猛发展，已经产生了十分丰富的理论和实际内容。3 安全需求通过对网络系统的风险分析及需要解决的安全问题，我们需要制定合理的安全策略及安全方案来确保网络系统的机密性、完整性、可用性、可控性与可审查性。即，可用性： 授权实体有权访问数据机密性： 信息不暴露给未授权实体或进程完整性： 保证数据不被未授权修改可控性： 控制授权范围内的信息流向及操作方式可审查性：对出现的安全问题提供依据与手段访问控制：需要由防火墙将内部网络与外部不可信任的网络隔离，对与外部网络交换数据的内部网络及其主机、所交换的数据进行严格的访问控制。同样，对内部网络，由于不同的应用业务以及不同的安全级别，也需要使用防火墙将不同的LAN或网段进行隔离，并实现相互的访问控制。数据加密：数据加密是在数据传输、存储过程中防止非法窃取、篡改信息的有效手段。安全审计： 是识别与防止网络攻击行为、追查网络泄密行为的重要措施之一。具体包括两方面的内容，一是采用网络监控与入侵防范系统，识别网络各种违规操作与攻击行为，即时响应（如报警）并进行阻断；二是对信息内容的审计，可以防止内部机密或敏感信息的非法泄漏4 风险分析网络安全是网络正常运行的前提。网络安全不单是单点的安全，而是整个信息网的安全，需要从物理、网络、系统、应用和管理方面进行立体的防护。要知道如何防护，首先需要了解安全风险来自于何处。网络安全系统必须包括技术和管理两方面，涵盖物理层、系统层、网络层、应用层和管理层各个层面上的诸多风险类。无论哪个层面上的安全措施不到位，都会存在很大的安全隐患，都有可能造成网络的中断。根据国内网络系统的网络结构和应用情况，应当从网络安全、系统安全、应用安全及管理安全等方面进行全面地分析。风险分析是网络安全技术需要提供的一个重要功能。它要连续不断地对网络中的消息和事件进行检测，对系统受到侵扰和破坏的风险进行分析。风险分析必须包括网络中所有有关的成分。5 解决方案1 设计原则 　　针对网络系统实际情况，解决网络的安全保密问题是当务之急，考虑技术难度及经费等因素，设计时应遵循如下思想：1．大幅度地提高系统

随着时代的变迁，我们的生活早已与网络息息相关。那么小编今天带给大家的是网络安全作文大全，请看看吧。 网络安全作文1 不可否认，网络是把双刃剑。在当今社会，网络安全不得不引起了很多人的重视。网络对当今社会的影响还是很大的。网络究竟是利大于弊，还是弊大于利呢?这是一个引人深思的问题。 首先，网络确实为人们带来了许多的便利。人们跨越不出门但却跨越知天下大小事。还可以在网上购物、网上聊天、听歌等等。由于网络的发达，一个个棘手的问题接踵而来。例如有一些人因沉迷于网络而无法自拔。在现实社会中，青少年狙猝死宇网吧的案例数不甚数，它引起了人们对网络安全的高度重视。 但不得不说，计算机是一项伟大的发明，因为在网上几乎能查到自己想找的资料。但也由于它的发达，会死很多人在玩的时候兴奋过度而永远长眠于地下。所以说，网络也是恐怖的。 网络安全成了很多人关心的问题，很多人发出由衷的疑问:“怎样使用网络才安全呢?”我认为:者何人的自制力有很大的关系。因为疲累过后适当的听一下歌曲可以使人放松。但有的人却无节制的玩，这不仅不能起到效果，反而还会使人更加颓兽，这不违背了自己最终的意愿了吗有些商家为了个人利益，发明出血腥场面的游戏，但却能吸引大批的青少年。他们仅仅是为了寻求刺激。但这却使他们的身心健康受到了影响，心灵开始扭曲，放佛自己身临其境，从而分不清虚实。所以说网络是虚构的也不够如此罢了。 我认为我们应该利用网络来学习知识，远离那些不堪入眼的资料。但在我们查阅资料时常会弹出一些无聊的广告，这对我们的影响也是极大的，因为处于青春期的我们迷茫，好奇。但这往往会使我们掉下悬崖。当这是，我们应该向老师、家长以及自己信任的人求助。不过网络也是精彩的，看的就是我们怎样去利它。例如，我们可以发邮件与异国的人聊天，我们不用担心语言不通而无法聊天，因为网上有翻译软件的，这样我们还可以学习异国文化。但也有的人不务正业，在网上发许多不良信息来误导别人的思想。所以网络是把双刃剑，可以成全一个人，但也可以毁掉一个人，看的就是我们怎样使用。 有很多人的网络安全意识弱，随便将自己的号码和地址给网上认识的陌生人，从而让犯罪分子有了犯罪的机会，殊不知，这给自己的安全带来隐患。还有的人将别人的照片经过处理(丑化)发到网上去，这不仅犯了当事人的肖像权，还打击别人的人格，但我们也可以通过网络找到这个人并去告他维护自己的利益。网络各种各样的软件给我们带来方便，同时还带来了不利的影响。 网络安全还是具有很大的影响。我们应该重视网络安全方面的问题。应该查阅资料，让自己得到更好的保护。科技发展的好处，同时也带来了不为人知的坏处。网络安全的影响对我们身心健康的发展很重要，我们应当重视。 让我们进一步探索网络安全的影响。创造跟美好、更文明的世界，使祖国更强大。

关于网络空间安全的论文双语版

There is no large-scale popularization of the computer before， it will lock important documents to a file cabinet or safe C With the computer， as well as the rapid development of the Internet tended to use computers and information networks Data A variety of important information (such as trade secrets， patents， ) if not stored in the computer security measures， which just do not have access to locked file cabinet to store confidential Due to the openness of the computer， such as structural characteristics and standardized so that a high degree of computer information-sharing and the spread of the characteristics of easy， resulting in the computer information (such as an important password) in the processing， storage， transmission and application of the process can easily be leaked， stolen， tampered with and destruction， or infection by computer viruses， backdoors， exploits and network hackers to bring substantial business At this time， the security of your computer on to highlight the importance of Each computer users are more or lessviruses or Trojan horses， hackers， Brought by individuals against the loss may also not large， but for enterprises， may be 没有大型电脑的普及之前，它将锁到一个文件中重要的文件或安全内阁　　保管。用电脑，以及互联网的迅速发展倾向于使用计算机信息网络　　数据的管理。各种各样的重要信息(例如商业秘密、专利等)，如果没有存储在计算机安全措施，只是没有接触到锁文件柜里储存机密文件。由于开放的计算机，如结构特点和标准化的这样一个高度的计算机共享信息和传播的特性，从而导致了简单的计算机信息(如重要的密码)的处理、存储、传输和应用该工艺能轻易被泄漏，偷、干扰和破坏，或感染的电脑病毒，黑客后门，开拓和网络带来实质性的经营风险。此时，你的电脑上的安全，突出的重要性。每台计算机用户都或多或lessviruses或特洛伊木马、黑客侵扰。带个人对损失也不大，但对企业可能会被淹死了。

A virtual world is an interactive simulated environment accessed by multiple users through an online Virtual worlds are also called "digital worlds，" "simulated worlds" and "MMOG'" There are many different types of virtual worlds， however there are six features all of them have in common: Shared Space: the world allows many users to participate at Graphical User Interface: the world depicts space visually， ranging in style from 2D "cartoon" imagery to more immersive 3D Immediacy: interaction takes place in real Interactivity: the world allows users to alter， develop， build， or submit customized Persistence: the world's existence continues regardless of whether individual users are logged Socialization/Community: the world allows and encourages the formation of in-world social groups like teams， guilds， clubs， cliques， housemates， neighborhoods， --------------------------------------------------------------------------------Virtual worlds have been created for many different The largest and most common type of virtual world is the "MMORPG" which stands for "Massively Multiplayer Online Role Playing G" But virtual worlds have also been built for purposes other than The following section summarizes a few ways in which virtual worlds are currently used: Commercial GamingCommercial gaming worlds tend to focus on a singular fictional theme and consistently follow formal conventions such as character-focused avatars， progression through an interactive narrative storyline， and a series of competitive Strongly influenced by fantasy， science fiction， and anime genres of literature and film， the majority of sizable virtual worlds in existence today are commercial gaming Examples include Everquest， Lineage 2， and World of W While Virtual Worlds Review includes several top-quality gaming worlds on the review list， we mostly feature worlds that fall outside the traditional gaming Fortunately there are many other great sites that contain comprehensive lists of commercial gaming Here are a few: MPOGD Gamespot Gamespy Socializing / Online Community BuildingIn addition to the traditional fantasy RPG worlds， there are many commercial community-focused virtual worlds that emphasize socializing rather than These worlds offer a more open-ended experience and are strongly influenced by the cultures of text-based chat Although small-scale， casual games may be incorporated into a social world， participants are not necessarily there to win or play a game， but rather to socialize with others and， in many cases， create and decorate a personal space such as a home， room， or Social worlds tend to use settings based on idealized versions of Most provide some basic building tools and the ability to host activities and events that revolve around a wide variety of EducationSome virtual worlds have been created for educational In most cases， educational worlds are sponsored by academic institutions or nonprofit organizations， although some educational worlds are sponsored by Educational worlds come in a wide variety of forms， including 3D recreations of museum and gallery spaces， computer programming tutorials， virtual libraries， and meeting spaces for online university Active Worlds Educational Universe is one of the oldest and largest networks of educational Adobe Atmosphere is also being used to build virtual worlds for educational A great example of a corporate-sponsored educational world is M Political ExpressionVirtual worlds can serve as forums for political expression and While real-world political issues can crop up in gaming， social， and educational worlds， there are a few cases in which completely separate virtual worlds have been built for the purpose of political debate or even experiments in various types of self-governing online A great example of a virtual world with a political focus is AgoraX Military TrainingVirtual world technologies are also being used in some interesting ways by the US America's Army is being used as a tool to recruit potential soldiers， while companies like Forterra Systems are working with military groups to develop training And this is just the As these technologies develop further over the next several years， virtual worlds will be used for all types of purposes as more people begin spending more time in If you're new to the "world of virtual worlds" we hope that Virtual Worlds Review will serve as a user-friendly， informative place to learn a bit about For those who are already familiar with virtual worlds， we hope the site will let you know about other types of worlds you may not have heard of In either case， welcome and enjoy the -------------------A virtual world is a computer-based simulated environment intended for its users to inhabit and interact via These avatars are usually depicted as textual， two-dimensional， or three-dimensional graphical representations， although other forms are possible[1] (auditory[2] and touch sensations for example) Some， but not all， virtual worlds allow for multiple The computer accesses a computer-simulated world and presents perceptual stimuli to the user， who in turn can manipulate elements of the modeled world and thus experiences telepresence to a certain [3] Such modeled worlds may appear similar to the real world or instead depict fantasy The model world may simulate rules based on the real world or some hybrid fantasy Example rules are gravity， topography， locomotion， real-time actions， and Communication between users has ranged from text， graphical icons， visual gesture， sound， and rarely， forms using touch and balance Massively multiplayer online games commonly depict a world similar to the real world， with real world rules and real-time actions， and Communication is usually textual， with real-time voice communication using VOIP also [clarify]Virtual worlds are not limited to games but， depending on the degree of immediacy presented， can encompass computer conferencing and text based HistoryThe concept of virtual worlds predates computers and could be traced in some sense to P[5] The mechanical-based 1962 Sensorama machine used the senses of vision， sound， balance， smells and touch (via wind) to simulate its Among the earliest virtual worlds to be implemented by computers were not games but generic virtual reality simulators， such as Ivan Sutherland's 1968 virtual reality This form of virtual reality is characterized by bulky headsets and other types of sensory input Contemporary virtual worlds， multi-user online virtual environments， emerged mostly independently of this virtual reality technology research， fueled instead by the gaming industry but drawing on similar [6] While classic sensory-imitating virtual reality relies on tricking the perceptual system into experiencing an imersive environment， virtual worlds typically rely on mentally and emotionally engaging content which gives rise to an immersive The first virtual worlds presented on the Internet were communities and chat rooms， some of which evolved into MUDs and MUSH MUDs， short for “Multi User Dungeons，” are examples of virtual worlds that consist of virtual space inhabited by representations of data and other users [7] Early virtual worlds were text-based， offering limited graphical representation， and often using a Command Line IMaze War (also known as The Maze Game， Maze Wars or simply Maze) was the first networked， 3D multi-user first person shooter Maze first brought us the concept of online players as eyeball "avatars" chasing each other around in a ” (-VCF7-MazeWar/html， 29th Feb) According to the website this was in 1974， it was played on Arpanet (the initial internet)， however it could only be played on an Imlac， as it was specifically built for this type of Then in 1978 MUD was released， it however was not 3D， it was text-based and used a TELNET program， by following the link you will be able to play the game， and understand just how far virtual worlds have come since -/ You can understandably argue whether or not this is a “virtual world” and that Maze War was more sophisticated (being 3D)， but you must understand that MUD could be played by anyone， Maze War was computer Perhaps in today’s senses it is not a true virtual world， but the idea of a virtual world in those days were different (see Neuromancer link in bibliography for more information)Some early prototyptes were WorldsAway， a prototype interactive communities featuring a virtual world by CompuServe called Dreamscape， Cityspace， an educational networking and 3D computer graphics project for children， and The Palace， a 2-dimensional community driven virtual However， credit for the first online virtual world usually goes to Habitat， developed in 1987 by LucasFilm Games for the Commodore 64 computer， and running on the Quantum Link service (the precursor to America Online)[citation needed]In 1996， the city of Helsinki， Finland with Helsinki Telephone Company (since Elisa Group) launched what was called the first online virtual 3D depiction intended to map an entire The Virtual Helsinki project was eventually renamed Helsinki Arena 2000 project and parts of the city in modern and historical context were rendered in 3D[citation needed][edit] Virtual world conceptsOne perception of virtual worlds requires an online persistent world， active and available 24 hours a day and seven days a week， to qualify as a true virtual [citation needed] Although this is possible with smaller virtual worlds， especially those that are not actually online， no massively multiplayer game runs all day， every All the online games listed above[clarify] include downtime for maintenance that is not included as time passing in the virtual While the interaction with other participants is done in real-time， time consistency is not always maintained in online virtual For example， EverQuest time passes faster than real-time despite using the same calendar and time units to present game As virtual world is a fairly vague and inclusive term， the above can generally be divided along a spectrum ranging from:massively multiplayer online role-playing games or MMORPGs where the user playing a specific character is a main feature of the game (World Of Warcraft for example) massively multiplayer online real-life/rogue-like games or MMORLGs， the user can edit and alter their avatar at will， allowing them to play a more dynamic role， or multiple Some would argue that the MMO versions of RTS and FPS games are also virtual worlds if the world editors allow for open editing of the terrains if the "source file" for the terrain is Emerging concepts include basing the terrain of such games on real satellite photos， such as those available through the Google Maps API or through a simple virtual geocaching of "easter eggs" on WikiMapia or similar mashups， where [edit] BoundariesVirtual worlds are well-known as being fantasy spaces sealed off from the real world， but more careful analysis reveals that the boundaries between the real and virtual worlds is quite Participants constantly arrive and depart from the world， carrying with them their unique set of behavioral assumptions and attitudes that cannot be disentangled from their interactions in the virtual [8][clarify] For example， in virtual worlds which bring together players from multiple cultural backgrounds， a participant in a virtual world brings their own cultural preconceptions about those other cultures across the boundary into the world while The term magic circle has been used to describe the imaginary barrier between the virtual world and the real The fantasy environment of the virtual world is protected from the intrusion of real life by this magic circle， but practices such as the sale of virtual items and virtual currency for real life currency challenges this separation while reinforcing the notion that objects in the virtual world have real life In a 2001 study by Edward Castronova， the value of the currency in the MMORPG Everquest was evaluated based on its exchange rate at USD 0107， making this unit of virtual currency of higher value than the Yen or the LEven though Virtual Worlds are most of the time seen as 3D Games， there are many different kinds of it: forums， blogs， wikis and chatrooms where communities Places which have their own world， their own rules， topics， jokes， members， Each person who belongs to these kinds of communities can find like-minded people to talk to， whether this be a passion， the wish to share information about or just to meet new people and experience new Some users develop a double personality depending on which world they are interacting Depending on whether that person is in the real or virtual world can impact on the way they think and It is not all about video games and communities， virtual world also plays a part in the social as it can allow people to speak or share knowledge with each Best examples are instant messaging and visio-conferences which allow people to create their own virtual It can also be used to help hospitalized children (suffering from painful disease or autism for example) to create a comfortable and safe environment which can help Although Virtual Worlds can be seen as a new way for people to socialize， they are said to be at the heart of a lot of anti-social People playing video games online and more precisely， MMORPG are sometimes so addicted to the game that they cannot live without playing Such people are called “No Life” or Otaku and spend most of their time in their house not leaving it for They are often wrongly treated like insane people and also represented as dangerous when criminal cases imply links with video The thing is that video games played online are most of the time designed to be played for a long period of time (and even in the case of World Of Warcraft indefinitely – programmers provide updates and new things to discover regularly) People who abuse this kind of video games end up living most of their live in their bedrooms， do not develop any social life or skills: they communicate with friends mostly via the game or the internet， they create their own life on the internet with a specific name， image and The example of Second Life is totally unique because players develop communities and businesses in this Second Life is a game where the player has to create his/her own character with a human aspect and live a second life in a virtual The thing is that some people are so involved in this game (and created their “own self” in this game) that they have a double

我在（计算机科学与应用）里面看到过这样的文章诶~你可以多看下吧~

关于网络空间安全的论文双语版英文

next and the joy of the game of livin

密码学在信息安全中的作用概述 引言基于日常生活，同学们对密码的了解可能仅仅直观来自于社交账号的密码，银行卡的密码，若再提及电脑，可能就是开机密码。而严格的来说，上述所举密码都不是密码学中的密码，他们都只是一种口令。密码学是研究编制密码和破译密码的技术科学。研究密码变化的客观规律，应用于编制密码以保守通信秘密的，称为编码学；应用于破译密码以获取通信情报的，称为破译学，总称密码学。这里方便理解，我们可以举“门锁”的技术机制，因为它能在一定程度上反映密码学的技术思想。 一、密码学的作用 那么密码学的作用是什么呢？它是一门用来研究如何隐密地传递信息的学科。在现代特别指对信息以及其传输的数学性研究，常被认为是数学和计算机科学的分支，和信息论也密切相关。著名的密码学者Ron Rivest解释道：“密码学是关于如何在敌人存在的环境中通讯”。自工程学的角度，这相当于密码学与纯数学的异同。密码学是信息安全等相关议题，如认证、访问控制的核心。密码学的首要目的是隐藏信息的涵义，并不是隐藏信息的存在。由此可见，密码是通信双方按约定的法则进行信息特殊变换的一种重要保密手段，使得交流的信息获得安全保障不被他人获取。通俗一点来说，就是使信息伪装化，使未授权者不能得到信息的真实含义。 二、密码学的一些相关概念首先不得不提的是加密密钥。因为加密解密都在它的控制下进行。其次是加密算法，它是用于加密的一簇数学变换，相应的，用于解密的一簇数学变换称为解密算法，而且解密算法是加密算法的逆运算，掌握了加密密钥和算法的人才算授权了的人。依照这些法则，变明文为密文（称为加密变换），变密文为明文（成为脱密变换），合法的通信双方就得以进行信息交流。 三、密码的三个性质保密性，保真性和保完整性。所以密码学是在编码与破译的斗争实践中逐步发展起来的，并随着先进科学技术的应用，已成为一门综合性的尖端技术科学。它与语言学、数学、电子学、声学、信息论、计算机科学等有着广泛而密切的联系。它的现实研究成果，特别是各国政府现用的密码编制及破译手段都具有高度的机密性。 四、密码的由来与信息安全的联系大约在公元前1900年前，古埃及一位奴隶主的墓志铭中就出现了一些古怪的符号。西方密码学家认为这是密码的最早出现。一般，墓志铭不需要保密，这样做大概是出于对墓主人的尊敬和追求文字表达的艺术性。而随着互联网的急速发展，网络信息的安全成了一项重大问题。密码在早期仅对文字或数码进行加、脱密变换，随着通信技术的发展，对语音、图像、数据等都可实施加、脱密变换，如今特别是在于电脑与网络安全所使用的技术，如访问控制与信息的机密性。所以密码学与计算机科学相互促进发展。现在密码学已被广泛应用在日常生活：包括自动柜员机的芯片卡、电脑使用者存取密码、电子商务等等。要说到密码与信息安全的关系，不难理解，密码是信息安全的关键技术或核心技术。从而，国际上，密码属于一个国家的主权。即，任何一个国家有自主选。再由于信息所需的保密性，几乎所有的信息安全领域都要应用密码技术，所以密码也是信息安全的共性技术。那么密码对信息安全的重要性也可见一斑了。 五、信息安全的专业定义信息安全是指信息系统（包括硬件、软件、数据、人、物理环境及其基础设施）受到保护，不受偶然的或者恶意的原因而遭到破坏、更改、泄露，系统连续可靠正常地运行，信息服务不中断，最终实现业务连续性。信息安全主要包括以下五方面的内容，即需保证信息的保密性、真实性、完整性、未授权拷贝和所寄生系统的安全性。其根本目的就是使内部信息不受内部、外部、自然等因素的威胁。为保障信息安全，要求有信息源认证、访问控制，不能有非法软件驻留，不能有未授权的操作等行为。既然有人想要对信息进行加密处理，那么也有敌人想要破解密码从而截取信息。 六、密码破译的发展与信息安全的联系1412年，波斯人卡勒卡尚迪所编的百科全书中载有破译简单代替密码的方法。到16世纪末期，欧洲一些国家设有专职的破译人员，以破译截获的密信。密码破译技术有了相当的发展。1863年普鲁士人卡西斯基所著《密码和破译技术》，以及1883年法国人克尔克霍夫所著《军事密码学》等著作，都对密码学的理论和方法做过一些论述和探讨。不得不说，两次世界大战对于密码学和信息安全来说都是发展的“绝胜时期”。第一次世界大战中的密码斗法。美国破译其他国家密码，一战结束后，军情处8 科被解散。雅德利带领留下的50多人成立了美国黑室”，专门破译各国的外交密电。1917-1929，雅德利领导的“美国黑室”小组破译了45000多份密电，包括中国、德国、英国、法国、俄国等20多国。10雅德利经营了十几年的 “美国黑室”被国务卿关闭，理由是“君子之间不偷看信件”。此语成为美国密码史上的一句名言。后来，雅德利把这段经历写成一本书《美国黑室》。第二次世界大战中的密码斗法。二战时期密码技术有了很大提高，一战时的密码技术主要依靠手工进行加解密，密码的复杂程度、安全性和加解密速度都不够高，密码破译人员主要由语言专家，猜谜专家，象棋冠军组成。战时的密码技术实现了机电化，加解密用机电装置进行，密码的复杂程度、安全性和加解密速度都有很大提高。密码破译人员也有数学专家的加入，并发挥主力作用。军事家评价：“盟军在密码方面的成功，使第二次世界大战提前十年结束”。中国的抗日战争是第二次世界大战的重要组成部分，值得骄傲的是中国人破译了日本部分密码，为赢得战争胜利作出了重要贡献为赢得战争胜利作出了重要贡献1938年底雅德利来重庆任军统密码破译顾问，为军统培训了200多名密码人才，7回国。后来我国破译了日本间谍的重庆气象密电，抓获了间谍；还破译了汪伪的一个间谍密码，并抓获了间谍；还破译了日本空军的密码，使重庆空战损失减小；还破译了日本外务省的部分密码，获得了珍珠港事件前的部分情报。 到1949年美国人香农发表了《秘密体制的通信理论》一文，应用信息论的原理分析了密码学中的一些基本问题。自19世纪以来，由于电报特别是无线电报的广泛使用，为密码通信和第三者的截收都提供了极为有利的条件。通信保密和侦收破译形成了一条斗争十分激烈的隐蔽战线。当今世界各主要国家的政府都十分重视密码工作，有的设立庞大机构，拨出巨额经费，集中数以万计的专家和科技人员，投入大量高速的电子计算机和其他先进设备进行工作。与此同时，各民间企业和学术界也对密码日益重视，不少数学家、计算机学家和其他有关学科的专家也投身于密码学的研究行列，更加速了密码学的发展。最终密码学终于成为一门独立的学科。 七、密码学与信息安全的联系密码学是一门跨学科科目，从很多领域衍生而来：它可以被看做是信息理论，却使用了大量的数学领域的工具，众所周知的如数论和有限数学。信息安全也是一门涉及计算机科学、网络技术、通信技术、密码技术、信息安全技术、应用数学、数论、信息论等多种学科的综合性学科。信息作为一种资源，它的普遍性、共享性、增值性、可处理性和多效用性，使其对于人类具有特别重要的意义。我国的改革开放带来了各方面信息量的急剧增加，并要求大容量、高效率地传输这些信息。传输信息的方式很多，有局域计算机网、互联网和分布式数据库，有蜂窝式无线、分组交换式无线、卫星电视会议、电子邮件及其它各种传输技术。信息在存储、处理和交换过程中，都存在泄密或被截收、窃听、窜改和伪造的可能性，所以安全的保障被高度重视起来。不管是机构还是个人，正把日益繁多的事情托付给计算机来完成，敏感信息正经过脆弱的通信线路在计算机系统之间传送，专用信息在计算机内存储或在计算机之间传送，电子银行业务使财务账目可通过通信线路查阅，执法部门从计算机中了解罪犯的前科，医生们用计算机管理病历，所有这一切，最重要的问题是不能在对非法（非授权）获取（访问）不加防范的条件下传输信息。由此我们提出安全策略这个术语，信息安全策略是指为保证提供一定级别的安全保护所必须遵守的规则。实现信息安全，不但靠先进的技术，而且也得靠严格的安全管理，法律约束和安全教育。 八、密码学与信息安全共同迅速发展中国信息安全行业起步较晚，自本世纪初以来经历了三个重要发展阶段(萌芽、爆发和普及阶段，产业规模逐步扩张。带动了市场对信息安全产品和服务需求的持续增长;另外，政府重视和政策扶持也不断推动我国信息安全产业的快速发展。据《2013-2017年中国信息安全行业发展前景与投资战略规划分析报告》数据显示，2010年中国信息安全产品市场规模达到74亿元，同比增长23%。前瞻网认为，信息安全行业具有较大发展潜力，但目前国内互联网行业的信息安全形势不容乐观，随着网络日益渗透到社会生活的各个方面，增强网络信息安全意识、提升信息安全防范措施变得尤为迫切。2012年信息安全产业将步入高速发展阶段，而整个互联网用户对安全产品的要求也转入“主动性安全防御”。随着用户安全防范意识正在增强，主动性安全产品将更受关注，主动的安全防御将成为未来安全应用的主流。 信息安全的市场主流电子商务将加密技术作为基本安全措施。加密技术分为两类，即对称加密和非对称加密。一、对称加密又称私钥加密，即信息的发送方和接收方用同一个密钥去加密和解密数据。它的最大优势是加/解密速度快，适合于对大数据量进行加密，但密钥管理困难。如果进行通信的双方能够确保专用密钥在密钥交换阶段未曾泄露，那么机密性和报文完整性就可以通过这种加密方法加密机密信息、随报文一起发送报文摘要或报文散列值来实现。二、非对称加密又称公钥加密，使用一对密钥来分别完成加密和解密操作，其中一个公开发布（即公钥），另一个由用户自己秘密保存（即私钥）。信息交换的过程是：甲方生成一对密钥并将其中的一把作为公钥向其他交易方公开，得到该公钥的乙方使用该密钥对信息进行加密后再发送给甲方，甲方再用自己保存的私钥对加密信息进行解密因为在互联网上，每台计算机都存在或多或少的安全问题。安全问题必然会导致严重后果。诸如系统被破坏，数据丢失，机密被盗和直接、间接的经济损失，这都是不容忽视的问题。既然说到安全，我们经常提到要使用防火墙、杀毒软件等等。而密码技术的有一个劣势就是密码不擅长解决信息处理形态的安全问题。这是目前病毒泛滥，而我们又没有很好办法的根本原因。因此请记住：“再好的密码也不能杀病毒，再好的杀病毒软件也不能当密码用”。两者都很重要！说了这么多，密码学与信息安全就是相辅相成的关系。密码学因信息安全得以更快发展，信息在密码学的保障下得以安全交流。参考文献：　　[1]谢希仁计算机网络(第4版)[M]北京:电子工业出版社，　　[2]张民，徐跃进网络安全实验教程，清华大学出版社，2007，　　[3]许治坤，王伟等网络渗透技术，电子工业出版社，2005-5-　　[4]武新华，翟长森等，黑客攻防秘技大曝光，清华大学出版社，2006．。。这是我之前纯手写的，还能关于密码学的，觉得能用就拿去吧

Computer network security and to guard againstAbstract: When mankind entered the 21st century information society， the network society of the time， China will establish a complete set of network security system， especially from the policy and law to establish China's own characteristics， network security Key words: computer; network; security; preventIn the information age， information can help groups or individuals so that they benefit from， the same information can also be used to pose a threat to them， caused Therefore network security， including the composition of network hardware， software and network transmission of information security， so that they do not because of accidental or malicious destruction of the attacks， network security not only the technical aspects， but also management issues， both complement each other， are First， the concept of computer network securityInternational Organization for Standardization of "computer security" is defined as: "To establish a data processing system and the adoption of technology and management of security protection， the protection of computer hardware， software， data is not due to accidental and malicious destruction of reasons， change and " The above definition of computer security includes physical security and logical security of both the contents of the contents of the logic of security could be understood as we often say that the information security， information refers to the confidentiality， integrity and availability of protection， and network security Information security is the meaning of the extension， that network security is a network of information confidentiality， integrity and availability Computer network security as the specific meaning of the user changes， the user is different on the network security awareness and requirements will be From the ordinary user's point of view， could only hope that personal privacy or confidential information transmission on the network be protected against eavesdropping， tampering and forgery; and network provider in addition to care about these network information security， we must also consider how to deal with sudden natural disasters， such as military strikes against the destruction of network hardware， as well as unusual in the network how to restore network communications， and maintain the continuity of network In essence， the network security， including the composition of network hardware， software and network transmission of information security， so that they do not because of accidental or malicious attacks on the destruction of both the technical aspects of network security issues， there are management issues， the two sides complement each other， are Man-made network intrusion and attacks makes network security is facing new Second， computer network security status quoComputer network security is the network hardware， software and data systems are protected from accidental or malicious destruction of reasons， alteration， disclosure， the system continuous， reliable， normal operation of network services without Computer and network technology has the complexity and diversity， makes computer and network security has become a need to continue to update and improve the At present， hackers method has been more than the type of computer virus， and many attacks are In the Internet network， because the Internet does not have the time and geographical constraints， whenever there is a means to generate new attacks， we can in a week around the world， these attacks means the use of network and system vulnerabilities to attack computer systems and resulting in network Worms， backdoor (Back-doors)， Rootkits， DOS (DenialofServices) and Sniffer (network monitor) is a familiar means of several hacker However， none of these attacks means they reflect the astonishing power of today become These types of attacks means the new variant， with previous attacks appeared methods， more intelligent， targeted against Internet-based protocols and operating system From the Web process control procedures to the kernel-level R Hackers practices escalating renovation， to the user's ability to guard against information security Third， computer network security precautions1， to strengthen the internal network management and the use of safety awareness among staff， many computer systems commonly used passwords to control access to system resources， which is anti-virus process， the most vulnerable and the most economical Network administrator and terminal operator privileges in accordance with their responsibilities， choose a different password for the application data legitimate operation， to prevent unauthorized users to access the data and the use of network On the network， software installation and management is crucial， it is not only related to network maintenance and management efficiency and quality， but also to the network A good antivirus software can be easily installed within minutes to the organization each NT server can also be downloaded and spread to all the purpose of the machine by the network administrator set up and manage to focus， it will work with the operating system and other security is closely linked to become a part of network security management， and automatically provide the best network virus defensive When the computer virus on-line resources applications attack， such as the virus exists in the information-sharing network of media， it is necessary to the security at the gateway， on the network front-end for 2， network firewall technologyIs a kind of used to strengthen the network access control to prevent the external network users to illegal means to enter the external network through the internal network， access internal network resources and protect the internal network operating environment special for Network Interconnection D It is between two or more networks such as packet transmission link in accordance with a certain degree of security strategy to implement the inspection， to determine whether the network communication between are allowed to， and monitor the network Although the firewall is to protect the network from an effective means of hacking， but there are obviously inadequate: through the firewall can not protect against outside attack other means， can not prevent defectors from the inside and inadvertent threats posed by users， but also can not completely prevent the transmission of the virus have been infected with the software or documents， and can not protect against data-driven 3， security encryption technologyEncryption technology for the global e-commerce to provide a guarantee， so that Internet-based electronic trading system has become possible， thus improving the symmetric encryption and asymmetric encryption technology is still the mainstream of the 21st Symmetric encryption to the conventional password-based technology， computing encryption and decryption operations use the same Asymmetric encryption， encryption key that is different from the decryption key， encryption keys are made public， anyone can use， only the decryption key to decrypt people 4， the network host operating system security and physical security measuresNetwork firewall as the first line of defense and can not fully protect the internal network， must be combined with other measures to improve the safety of the system After the firewall is based on the network host operating system security and physical security In accordance with the level from low to high， namely， the physical security of the host system， the core operating system security， system security， application services security and file system security; At the same time， host security checks and bug fixes， as well as a backup safety system as a supplementary safety These constitute the entire network system， the second line of defense， the main part of a breakthrough to prevent the firewall as well as attacks from System backup is the last line of defense network system， used to attack after the System R The firewall and host security measures is the overall system security by auditing， intrusion detection and response processor constitute the overall safety inspection and response It from the network system firewall， network host or even directly from the network link layer on the extraction of network status information， as input to the intrusion detection Intrusion Detection System in accordance with certain rules to determine whether there is any invasion of the incident， if the invasion occurred， the emergency treatment measures， and generate a warning Moreover， the system's security audit also can be used as the future consequences of aggressive behavior and to deal with security policy on the system to improve sources of In short， network security is a comprehensive issue， involving technology， management， use and many other aspects， including both its own information system security issues， there are physical and logical technical measures， a kind of technology can only solve the problem on the one hand， rather than a To this end the establishment of a network with Chinese characteristics， security system， the need for national policies and regulations to support and joint research and development Security and anti-security like two sides of contradictions， always pick-up， so the security industry is a future with the development of new technologies and the continuous development of References:[1] Huang Yi-qiang， et On the software development needs analysis phase of the main Quarterly Journal of Sun Yat-sen University， 2002 (01)[2] Hu D Computer LAN [M] Beijing: Tsinghua University Press， [3] Zhu Lisen， even S Computer Network Application Technology [M] Beijing: Patent Literature Publishing House， [4] Xie X Computer Networks (4th edition) [M] Beijing: Publishing House of Electronics Industry， [5]孙小刚， Han Dong， et Oriented software engineering， Visual C + + Network Programming [M] Beijing: Tsinghua University Press， 2004，仅供参考，请自借鉴。希望对您有帮助。补充：您可以随时找我，我会帮你翻译好发过去，随时欢迎您的咨询。

关于网络空间安全的论文题目怎么写

论文题目应确定，在最近几年，一般都是选择热点，比如你是学教育课程改革本来是写在试卷，或者在球场上你所教你的一些想法写原创性的论文。第二个步骤是确定你的论文的提纲，然后就是收集信息，一般做一点收集10篇有关您所选择的主题，那么就涉及到专业书籍，以及相关的书籍和杂志。然后把你的轮廓也逐渐丰富起来。下一步是让老师审查初稿，然后在试卷的老师提出的意见继续，老师的没有看到的问题是什么时，你可以完成

学术堂整理了十五个好写的论文题目，供大家进行选择：　　1、一种软件定义网络中基于博弈的混合路由算法　　2、基于终端属性的矿下机会网络分组转发协议　　3、基于量子蚁群算法的片上网络映射研究　　4、尺度变换复双树小波网络隐藏信道深度检测　　5、面向多类不均衡网络流量的特征选择方法　　6、基于社会组的高投递率机会网络路由协议　　7、基于事件触发机制的多智能体网络平均一致性研究　　8、带可移动存储设备的P2G网络病毒传播模型　　9、互联网空间下的城市网络格局及结构研究　　10、负载均衡的水声传感器网络多跳非均匀分簇路由协议　　11、一种基于分层云对等网络的多属性云资源区间查找算法　　12、NDN网络中内容源移动的路由更新优化方法　　13、基于网格覆盖的社交网络位置数据的保护方法　　14、信道随机性对传感器网络连续渗流密度的影响　　15、一种支持多维区间查询的云对等网络索引架构

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有很多呀~你写论文之前难道没有指导老师吗？？首先你可以问下你的老师，要是不行的话~实在没思路的话~你去参考下（计算机科学与应用）吧~~上面的论文都是别人已经发表的论文~你去参考参考吧

关于网络空间安全的论文摘要怎么写

随着计算机网络的普及和计算机技术在生活中的各个领域的广泛应用，网络信息的安全这几年备受人们的关注。计算机网络技术提供巨大的信息含量和交互功能，提高了各个领域的工作效率，但计算机网络信息安全即影响网络稳定运行又影响用户的正常使用，可以造成重大的经济损失，信息一旦泄露将造成无法估量的损失。因此网络的安全性是我们必须重视的也是非常重要的。下面是学术堂整理的关于网络安全的毕业论文题目，欢迎大家查看。　　1、探讨计算机网络安全中的防火墙技术　　2、计算机网络安全防范在大数据时代的探讨　　3、网络型病毒与计算机网络安全　　4、网络安全管理技术分析　　5、浅谈计算机网络安全与防火墙设计　　6、网络安全信息关联分析技术的运用与问题阐述　　7、美国网络安全专业教育体系建设及其启示　　8、基于威胁传播的多节点网络安全态势量化评估方法　　9、基于大数据时代下的网络安全问题分析　　10、信息化网络安全的建设与防护技术分析　　11、空间信息网络安全协议综述　　12、电子商务网络安全技术研究　　13、基于并行约简的网络安全态势要素提取方法　　14、欧盟NIS指令研究对我国网络安全保障实施的启示　　15、论拒不履行信息网络安全管理义务罪　　16、浅析计算机网络安全问题及防范措施　　17、网络安全中计算机信息管理技术的应用探讨　　18、基于攻防行为树的网络安全态势分析　　19、美国网络安全审查制度研究及对中国的启示　　20、以色列的网络安全问题及其治理　　（论文范文可到学术堂内自行查看）

1， 网络安全与网络道德的思考 (20) 2007-5-21 10:28:00 -5-21/html Internet安全问题，是人们十分关注的问题。据有关方面的了解，2001年的爱虫病毒与2002年的Code red蠕虫在若干小时之内传染了几十万台主机，每次造成10亿美元左右的损失。有一份调查报告谈到，截止2002年10月，有88％的网站承认，它们中间有90％已经安装了防火墙和入侵监测等安全设备。但最后一年内有88％受到病毒传染，而有关网络的研究表明，Internet具有free scale的性 2， 计算机网络安全问题的探讨 (1128) 2006-5-21 11:13:00 -5-21/html 计算机网络安全问题的探讨� 彭杰� （广东省司法警察学校广州510430）� �� 摘 要 分析了目前网络上的安全问题，说明了有关信息安全技术在保证信息安全中的作用，从而提出了构筑计算机网络信息安全的5层体系结构。� 关键词 网络安全 防火墙 加密 安全体系结 3， 设计电力企业网络安全解决方案 (83) 2006-5-11 22:02:00 -5-11/html 设计电力企业网络安全解决方案 罗 涛 （四川省电力公司，四川成都 610021） 摘 要：通过对安全防护体系、安全策略体系、安全管理体系三个方面，对电力信息网络进行深入分析，从而形成相应的电力信息网络安全解决方案。 关键词：电力信息网络；安全防护；安全策略；安全管理 信息网络技术的高速发展和电力信息系统的不断投入，为电力企业带来了成本降 4， 一个网络安全的电子商务IC卡系统模型 (378) 2006-4-18 20:29:00 -4-18/html 一个网络安全的电子商务IC卡系统模型杨观懂，陈添丁 (杭州商学院 信息与电子工程学院浙江 杭州310035) 摘 要：随着电子商务的快速发展，建立一个网络商务的安全交易环境，就成为一个急需解决的问题。本文以智能IC卡为基础，采用密码学原理，以公钥密码系统及私钥密码系统来达成网络交易系统的不可否认性、可鉴别性、完整性、隐密性等安全功能。&nb 5， 高速公路联网收费网络安全模型的研究 (169) 2006-4-18 20:02:00 -4-18/html 现代电子技术 2006年第2期高速公路联网收费网络安全模型的研究李锦伟关键词：高速公路；联网收费网络；安全模型；防范体系（以下文章为图片形式，如看不清，可点击右键属性下载放大查阅） 6， 校园网络安全初探 (129) 2006-4-17 9:36:00 -4-17/html [内容摘要] 网络安全越来越受到人们的重视，本文结合笔者在网络管理的一些经验体会，从密码安全、系统安全、共享目录安全和木马防范方面，对校园网的安全谈了自己的看法和做法，供大家参考。[关键词] 网络 安全 黑客随"校校通"工程的深入开展，许多学校都建立了校园网络并投入使用，这无疑对加快信息处理，提高工作效率，减轻劳动强度，实现资源共享都起到无法估量的作用。但在积极发展办公自动化、实现资源共享的同 7， 浅析网络安全技术（二） (153) 2006-4-16 23:19:00 -4-16/html 摘要：文中论述了防火墙部署原则，并从防火墙部署的位置详细阐述了防火墙的选择标准。并就信息交换加密技术的分类及RSA算法作以分析，针对PKI技术这一信息安全核心技术，论述了其安全体系的构成。 关键词：网络安全 防火墙 PKI技术 概述 网络防火墙技术的作为内部网络与外部网络之间的第一道安全屏障，是最先受到人们重视的网络安全技术，就其产品的主流趋势而言，大多数代理服务器（也称应用网关）也集成了包滤 8， 浅析网络安全技术（一） (184) 2006-4-16 23:18:00 -4-16/html 摘要：文中就信息网络安全内涵发生的根本变化，阐述我国发展民族信息安全体系的重要性及建立有中国特色的网络安全体系的必要性。论述了网络防火墙安全技术的分类及其主要技术特征。 关键词：网络安全 防火墙 技术特征 概述 21世纪全世界的计算机都将通过Internet联到一起，信息安全的内涵也就发生了根本的变化。它不仅从一般性的防卫变成了一种非常普通的防范，而且还从一种专门的领域变成了无处不在。当人类步 9， 网络安全立法滞后与前瞻——从“吕科”事件谈起 (9) 2005-3-6 22:54:00 -3-6/html 沈木珠 人称巴蜀“网络天才”的吕科，因在河南北网信息工程公司AWE网络程序中安置逻辑炸弹及擅自取走原程序代码，而涉嫌破坏计算机信息系统被羁押46天后释放。这是因为我国刑法第二百八十六、二百七十六条规定及我国《计算机安全保护条例》（下简称《条例》）的规定，均不能适用吕科的这一特定行为，即按现行法律，吕科所为并不构成刑事犯罪；按现行法规，吕科的“破坏”也未达到受惩处的后果。其安置逻辑炸弹虽可导致北 10， 信息网络安全的法律保障 (16) 2005-10-31 23:01:00 -10-31/html 法律是信息网络安全的制度保障。离开了法律这一强制性规范体系，信息网络安全技术和营理人员的行为，都失去了约束。即使有再完善的技术和管理的手段，都是不可靠的。同样没有安全缺陷的网络系统。即使相当完善的安全机制也不可能完全避免非法攻击和网络犯罪行为。信息网络安全法律。告诉人们哪些网络行为不可为，如果实施了违法行为就要承担法律责任，构成犯罪的还承担刑事责任。一方面。它是一 ，这个网站里有很多这方面的论文，你可以综合一下的。

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