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id="e286xo47mbob" class="ar_con_nr"> <div id="e286xo47mbob" class="con_l fl"> <article class="ar_con bg louti"> <div id="e286xo47mbob" class="ar_title"> <h1>關(guān)于計(jì)算機(jī)網(wǎng)絡(luò)類的獲獎(jiǎng)?wù)撐?/h1> <div id="e286xo47mbob" class="ar_title_b"> <div id="e286xo47mbob" class="sub_title clear"> <span id="e286xo47mbob" class="sp2 c6 fl">時(shí)間：<time class="fxtime">2017-06-13 16:11:35</time></span> <span id="e286xo47mbob" class="sp1 c6 fl"><em id="zuozhe" class="noshow">秋梅</em><em class="user_id noshow">1032</em>由 <em class="nickname"></em> 分享</span> <span id="e286xo47mbob" class="fl arc_btn"></span> </div> </div> </div> <div id="e286xo47mbob" class="y_ju"><script type="text/javascript">a("title");</script></div> <div id="e286xo47mbob" class="con_article con_main" id="contentText"> <p>關(guān)于計(jì)算機(jī)網(wǎng)絡(luò)類的獲獎(jiǎng)?wù)撐?/p><p> 　　隨著信息化時(shí)代的到來,計(jì)算機(jī)已成為各行各業(yè)都不可缺少的重要工具,計(jì)算機(jī)網(wǎng)絡(luò)建設(shè)也在如火如荼地進(jìn)行之中。下文是學(xué)習(xí)啦小編為大家搜集整理的關(guān)于計(jì)算機(jī)網(wǎng)絡(luò)類的獲獎(jiǎng)?wù)撐牡膬?nèi)容，歡迎大家閱讀參考!</p><h2> 　　關(guān)于計(jì)算機(jī)網(wǎng)絡(luò)類的獲獎(jiǎng)?wù)撐钠?</h2><p> 　　淺論計(jì)算機(jī)網(wǎng)絡(luò)安全中的數(shù)據(jù)加密技術(shù)</p><p> 　　[摘要]數(shù)據(jù)加密，即根據(jù)某種密碼算法使明文信息轉(zhuǎn)變?yōu)榧用罔€的基本設(shè)置。數(shù)據(jù)加密是計(jì)算機(jī)安全防護(hù)的關(guān)鍵技術(shù)，設(shè)置秘鑰的目的在于數(shù)據(jù)保護(hù)。數(shù)據(jù)加密大體可分為節(jié)點(diǎn)加密、端口加密以及鏈路加密三種表現(xiàn)形式。在交換機(jī)與防火墻中，它主要是對(duì)傳輸信息實(shí)現(xiàn)加密處理與檢測(cè)，最終達(dá)到對(duì)計(jì)算機(jī)系統(tǒng)數(shù)據(jù)的保護(hù)目的。</p><p> 　　[關(guān)鍵詞]計(jì)算機(jī);網(wǎng)絡(luò)安全;數(shù)據(jù)加密技術(shù)</p><p> 　　1數(shù)據(jù)加密技術(shù)種類</p><p> 　　(1)對(duì)稱加密技術(shù)。</p><p> 　　對(duì)稱加密，又稱共享密鑰加密，即信息發(fā)送、接收方通過某種密鑰分別對(duì)數(shù)據(jù)進(jìn)行加密、解密。它要求通信雙方在密文安全傳輸前，應(yīng)先確定某個(gè)公用密鑰。所以，只有雙方都不透露密鑰，方可保證數(shù)據(jù)傳輸?shù)目煽啃?、完整性。?duì)稱加密技術(shù)，屬于最常見的數(shù)據(jù)加密技術(shù)。數(shù)據(jù)加密算法大體包含DES、AES與IDEA三種。DES數(shù)據(jù)加密標(biāo)準(zhǔn)算法，主要是針對(duì)二元數(shù)據(jù)進(jìn)行加密，是一種分組密碼(對(duì)稱64位數(shù)據(jù))，密鑰可隨意設(shè)置為56位，剩下8位為奇偶校驗(yàn)。DES加密效率較高、速度較快，它的加密范圍很廣，在各個(gè)領(lǐng)域內(nèi)均有普適應(yīng)用。而AES算法則是在DES算法的基礎(chǔ)上加強(qiáng)密鑰，達(dá)到128位，使數(shù)據(jù)更安全。</p><p> 　　(2)非對(duì)稱加密技術(shù)。</p><p> 　　非對(duì)稱加密，又稱公鑰加密。簡(jiǎn)而言之，非對(duì)稱加密，即信息發(fā)送與接收方分別選擇不同的密鑰，來對(duì)數(shù)據(jù)進(jìn)行加密、解密，密鑰通常包含公開密鑰(加密)與私有密鑰(解密)兩類，現(xiàn)有技術(shù)與設(shè)備還無法從公鑰推向私鑰。非對(duì)稱加密技術(shù)的前提在于密鑰交換協(xié)議，通信雙方在不交換秘鑰的情況下，便可直接傳輸通信數(shù)據(jù)，不存在密鑰安全隱患，數(shù)據(jù)傳輸?shù)谋Ｃ苄燥@著提升。非對(duì)稱加密技術(shù)，通常包含RSA、EIGamal以及Diffie-Hellman等數(shù)據(jù)加密算法。公鑰算法中應(yīng)用最廣的算法是RSA算法，可有效防御現(xiàn)有密碼的攻擊。非對(duì)稱加密技術(shù)可應(yīng)用于數(shù)據(jù)加密，同時(shí)也可認(rèn)證身份、驗(yàn)證數(shù)據(jù)的完整性，在數(shù)字證書、簽名等領(lǐng)域得到廣泛應(yīng)用。</p><p> 　　2數(shù)據(jù)加密的表現(xiàn)形式</p><p> 　　(1)鏈路加密。鏈路加密，又稱在線加密，是指在網(wǎng)絡(luò)節(jié)點(diǎn)中對(duì)通信鏈路予以加密，以確保網(wǎng)絡(luò)的安全傳輸。鏈路加密在傳輸數(shù)據(jù)前，就對(duì)信息</p><p> 　　進(jìn)行加密，而后在網(wǎng)絡(luò)節(jié)點(diǎn)間二次解密，在多次解密、加密中，運(yùn)用多種密鑰來維護(hù)數(shù)據(jù)安全。通常而言，接收人在獲取一個(gè)數(shù)據(jù)前，經(jīng)歷了多條通信鏈路。該過程還包含路由信息中的數(shù)據(jù)，均通過密文形式傳遞，鏈路加密有效覆蓋了數(shù)據(jù)傳輸、接收兩點(diǎn)。</p><p> 　　(2)鏈路加密技術(shù)。</p><p> 　　鏈路加密技術(shù)，將數(shù)據(jù)劃分為多條傳輸線路，而后再對(duì)各個(gè)區(qū)域進(jìn)行加密;當(dāng)接收方收到數(shù)據(jù)時(shí)，數(shù)據(jù)已歷經(jīng)了數(shù)次加密，并以密文形式達(dá)到;它與節(jié)點(diǎn)加密技術(shù)有所不同，當(dāng)數(shù)據(jù)以密文形式出現(xiàn)時(shí)，信息較為模糊，這就能很好地保證數(shù)據(jù)的安全性。鏈路加密技術(shù)的優(yōu)點(diǎn)在于：不同區(qū)域均使用相應(yīng)的加密技術(shù)，各區(qū)域的表現(xiàn)特征也存在一定差異，其他人通常無法獲取明文數(shù)據(jù)。</p><p> 　　(3)端端加密技術(shù)。</p><p> 　　端端加密技術(shù)，即信息由端—端所提供的加密技術(shù)。換而言之，數(shù)據(jù)被發(fā)送方加密，而后被接收方解密，并始終以密文形式進(jìn)行傳輸。與鏈路加密技術(shù)和節(jié)點(diǎn)加密技術(shù)相比，端端加密技術(shù)的加密、解密設(shè)備均在發(fā)送方、接收方，避免了傳輸階段的加密、解密次數(shù)，這從某種程度上提升了數(shù)據(jù)的安全性。然而，端端加密技術(shù)也有其自身的缺點(diǎn)，其加密對(duì)象僅為內(nèi)容，開頭無法加密，這就容易被非法入侵者竊取數(shù)據(jù)。</p><p> 　　3數(shù)據(jù)加密技術(shù)在計(jì)算機(jī)網(wǎng)絡(luò)安全中的應(yīng)用</p><p> 　　(1)網(wǎng)絡(luò)數(shù)據(jù)庫加密。</p><p> 　　網(wǎng)絡(luò)數(shù)據(jù)庫管理系統(tǒng)主要為WindowsNT、Unix，操作系統(tǒng)級(jí)別多為C1級(jí)、C2級(jí)?？芍?jì)算機(jī)存儲(chǔ)系統(tǒng)與數(shù)據(jù)傳輸公共信道的安全性偏低，容易被PC機(jī)等設(shè)備通過某種方式對(duì)有價(jià)值的數(shù)據(jù)、密碼等進(jìn)行竊取甚至篡改?；诖?，對(duì)系統(tǒng)內(nèi)外部安全管理而言，數(shù)據(jù)加密極為關(guān)鍵，網(wǎng)絡(luò)數(shù)據(jù)庫用戶應(yīng)根據(jù)訪問權(quán)限或者是設(shè)定口令字等，來加密保護(hù)核心數(shù)據(jù)。</p><p> 　　(2)軟件加密。</p><p> 　　在數(shù)據(jù)加密過程中，假如殺毒軟件或是反病毒軟件及程序染上了計(jì)算機(jī)病毒，則不能查驗(yàn)該程序、數(shù)據(jù)等是否存在數(shù)字簽名。因此，如要執(zhí)行加密程序，則必須查驗(yàn)需加密、解密文件及其本身有沒有被病毒感染。不過，該種檢查機(jī)制對(duì)保密性要求較高，使得部分殺毒軟件、反病毒軟件都需運(yùn)用數(shù)據(jù)加密技術(shù)，以保證軟件程序的安全性。</p><p> 　　(3)無線網(wǎng)絡(luò)的數(shù)據(jù)加密。</p><p> 　　無線網(wǎng)絡(luò)由于其方便快捷，可以適用于較偏遠(yuǎn)的、鋪設(shè)通訊線路比較困難的地區(qū)而越來越受人歡迎，但是空間上的開放性使得它暴露出來的安全問題也越來越明顯。因此無線網(wǎng)絡(luò)往往會(huì)使用一些加密算法來保證自己的數(shù)據(jù)進(jìn)行安全傳輸?，F(xiàn)行網(wǎng)絡(luò)中經(jīng)常使用WEP算法、WPA算法，并采用統(tǒng)一的安全驗(yàn)證標(biāo)準(zhǔn)IEEE802.11i，改進(jìn)了加密機(jī)制中的缺陷。</p><p> 　　(4)虛擬專用網(wǎng)絡(luò)()。</p><p> 　　現(xiàn)階段，很多企事業(yè)單位均建立起了自身的局域網(wǎng)。因各分支機(jī)構(gòu)設(shè)立在不同的地方，需通過租用專用路線來實(shí)現(xiàn)各局域網(wǎng)的聯(lián)合，以便組建廣域網(wǎng)。在中，數(shù)據(jù)加密技術(shù)價(jià)值在于：數(shù)據(jù)從發(fā)送者處自動(dòng)通過路由器來對(duì)硬件加密，而后以密文形式將數(shù)據(jù)傳輸至互聯(lián)網(wǎng)，當(dāng)密文達(dá)到指定時(shí)，它的路由器也會(huì)自動(dòng)為其解密，接受者隨即可閱讀明文。</p><p> 　　4結(jié)語</p><p> 　　數(shù)據(jù)加密技術(shù)是通過置換表算法、循環(huán)移位以及XOR操作算法等多種加密算法來加密數(shù)據(jù)信息，以保證其傳輸完整性、科學(xué)性。只有立足于實(shí)踐，充分應(yīng)用數(shù)據(jù)加密技術(shù)，才能維護(hù)計(jì)算機(jī)網(wǎng)絡(luò)安全，真正為使用者服務(wù)。</p><p> 　　參考文獻(xiàn):</p><p> 　　[1]李海華.數(shù)據(jù)加密技術(shù)在計(jì)算機(jī)網(wǎng)絡(luò)通信安全中的應(yīng)用探析[J].計(jì)算機(jī)光盤軟件與應(yīng)用，2014(8).</p><p> 　　[2]鄧小剛.數(shù)據(jù)加密技術(shù)在計(jì)算機(jī)安全中的應(yīng)用分析[J].電子技術(shù)與軟件工程，2014(24).</p><p> 　　[3]宋利敏.芻議計(jì)算機(jī)信息數(shù)據(jù)的加密技術(shù)[J].科技風(fēng)，2014(14).</p><p> 　　[4]李樹政.淺談?dòng)?jì)算機(jī)信息數(shù)據(jù)的安全與加密技術(shù)[J].黑龍江科技信息，2015(19).</p><p><span><strong>　　>>>下頁帶來更多的關(guān)于計(jì)算機(jī)網(wǎng)絡(luò)類的獲獎(jiǎng)?wù)撐?/strong></span> 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