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.[13] 賴溪松、韓亮、[M].國(guó)防工業(yè)出版社,.[14] (第二版)[M].清華大學(xué)出版社,1998. 140187.致 謝本論文是在我的指導(dǎo)老師 XX老師的親切關(guān)懷和悉心指導(dǎo)下完成的。他嚴(yán)肅的科學(xué)態(tài)度,嚴(yán)謹(jǐn)?shù)闹螌W(xué)精神,精益求精的工作作風(fēng),深深地感染和激勵(lì)著我。從課題的選擇到項(xiàng)目的最終完成,張老師都始終給予我細(xì)心的指導(dǎo)和不懈的支持。在大學(xué)生活中,老師們不僅在學(xué)業(yè)上給我以精心指導(dǎo),同時(shí)還在思想、生活上給我以無(wú)微不至的關(guān)懷,在此謹(jǐn)向老師們致以誠(chéng)摯的謝意和崇高的敬意。在此,我還要感謝在一起愉快的度過(guò)大學(xué)生活的同學(xué)們,正是由于你們的幫助和支持,我才能克服一個(gè)一個(gè)的困難和疑惑,直至本文的順利完成。在論文即將完成之際,我的心情無(wú)法平靜,從開(kāi)始進(jìn)入課題到論文的順利完成,有多少可敬的師長(zhǎng)、同學(xué)、朋友給了我無(wú)言的幫助,在這里請(qǐng)接受我誠(chéng)摯的謝意!最后我還要感謝培養(yǎng)我長(zhǎng)大含辛茹苦的父母,謝謝你們!第二部分 外文資料翻譯DATA ENCRYPTION STANDARD (DES)Federal Information Processing Standards Publications (FIPS PUBS) are issued by the National Bureau of Standards in accordance with section 111 (f) (2) of the Federal Property and Administrative Services Act of 1949, as amended, Public Law 89306 (79 Stat 1127), Executive Order 11717 (38 FR 12315, dated May 11, 1973), and Part 6 of Title 15 Code of Federal Regulations.(1) Name of Standard. Data Encryption Standard (DES).【英文已刪除,符合專業(yè)標(biāo)準(zhǔn),加:10247336詳談】【通信工程專業(yè)本/??飘厴I(yè)論文修改與擬稿】計(jì)1萬(wàn)5千字左右數(shù)據(jù)加密標(biāo)準(zhǔn)( DES )聯(lián)邦信息處理標(biāo)準(zhǔn)出版物(符合FIPS出版)是由國(guó)家標(biāo)準(zhǔn)局根據(jù)第111條(六) ( 2 )1949年修訂的聯(lián)邦財(cái)產(chǎn)和行政管理服務(wù)法,公法89306 ( 79統(tǒng)計(jì)1127年) ,行政命令11717 ( 聯(lián)邦條例法典1231538 ,日期1973年5月11日) ,以及聯(lián)邦條例法典156。(1)標(biāo)準(zhǔn)的Name of Standard. Data Encryption Standard (DES).名稱。數(shù)據(jù)加密標(biāo)準(zhǔn)( DES )。(2)Category of Standard. Computer 。計(jì)算機(jī)安全。(3)Explanation. The Data Encryption Standard (DES) specifies a FIPS approved cryptographic algorithm as required by FIPS 。數(shù)據(jù)加密標(biāo)準(zhǔn)( DES )指定了一個(gè)符合FIPS批準(zhǔn)的加密算法的要求,符合FIPS 1401第。 This publication provides a plete description of a mathematical algorithm for encrypting (enciphering) and decrypting (deciphering) binary coded (加密)和解密(解密)二進(jìn)制編碼的信息。 Encrypting data converts it to an unintelligible form called 。 Decrypting cipher converts the data back to its original form called 。 The algorithm described in this standard specifies both enciphering and deciphering operations which are based on a binary number called a 。一個(gè)密鑰由64個(gè)二進(jìn)制數(shù)字組成(“O”或“1”),其中56位是隨機(jī)生成,并直接利用該算法。 算法不用The other 8 bits, which are not used by the algorithm, are used for error ,這8位用于錯(cuò)誤檢測(cè)。The 8 error detecting bits are set to make the parity of each 8bit byte of the key odd, ie, there is an odd number of 1s in each 8bit byte錯(cuò)誤檢測(cè)位設(shè)置使平價(jià)每8位字節(jié)中有一個(gè)關(guān)鍵字是奇數(shù)個(gè),比如在每個(gè)8位字節(jié)有一個(gè)單數(shù)個(gè)“1” 。加密數(shù)據(jù)計(jì)算機(jī)授權(quán)用戶必須具備密鑰,這是用來(lái)加密數(shù)據(jù)和解密的。The encryption algorithm specified in this standard is monly known among those using the 。 The unique key chosen for use in a particular application makes the results of encrypting data using the algorithm ,Selection of a different key causes the cipher that is produced for any given set of inputs