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1、摘要隨著網(wǎng)絡(luò)在全球范圍內(nèi)的迅速普及,信息安全技術(shù)成為人們倍受關(guān)注的問題。密碼理論的研究與應(yīng)用是信息安全技術(shù)的核心研究領(lǐng)域。ECC是一種公鑰密碼體制,相對(duì)于以往基于有限域上離散對(duì)數(shù)問題或大整數(shù)分解問題的傳統(tǒng)公鑰算法,ECC具有安全性高、速度快、密鑰短、占用資源少等優(yōu)點(diǎn)。另一方面,AES具有簡(jiǎn)潔、高效、安全性高等優(yōu)點(diǎn),是對(duì)稱密碼體制中一個(gè)很好的標(biāo)準(zhǔn)。本文首先對(duì)密碼學(xué)做了簡(jiǎn)要的概述;其次,對(duì)AES和ECC加密體制的數(shù)學(xué)原理和算法實(shí)現(xiàn)進(jìn)行了討論;第三,提出了AES和ECC相結(jié)合的混合密碼體制,并對(duì)其安全性進(jìn)行研究,模擬了
2、其加密解密過程;最后給出了該混合密碼體制的一些應(yīng)用。得出該混合密碼體制是安全高效的,可以彌補(bǔ)以往密碼體制的缺點(diǎn)。關(guān)鍵詞:網(wǎng)絡(luò)安全;密碼學(xué);AES;ECC;混合密碼系統(tǒng)IABSTRACTWiththerapiddevelopmentofInternetintheworld,informationsecurityhasbeenpaidtomoreandmoreattention.Theresearchandapplicationoncryptologyisthecoreoftheinformationsecurity
3、.ECCsystemswhichisapublic-keysystemischaracterizedbyhighersafetyproperty,fasterspeed,shorterkeylengthsandfewercomputationalresourcesforimplementationthanotherformertraditionalpublic-keyalgorithmsbasedonthediscretelogarithminfinitefieldsorthegreatintegerfactor
4、izationproblem.OntheotherhandtheAESisagoodsymmetrycryptosystemwithitsadvantagesofsimplicity,highefficiencyandsecurity.Inthisdissertation,abriefsummaryoncryptographyisfirstgiven;andthenreaserchthemathematicalprinciplesandalgorithmrealizationofECCandAES;Thirdly
5、,presentthemixedcryptosystembaseonECCandAES,andreaserchitssafeperformance,Atthesametimesimulateitsencryptionanddecryptionprocession.Finally,someapplicationsofthismixedcryptosystemaregiven.Alloftheabovethismixedcryptosystemisefficientandsecurity,itcanmakeupfor
6、theshortcomingsoftheotherencryptionsystem.Keywords:NetworkSecurity,Cryptography,AdvancedEncryptionSystem,EllipticCurveCryptogram,MixedCryptosystemII目錄1緒論..........................................................................................................
7、......................11.1研究背景及意義......................................................................................................11.2密碼技術(shù)發(fā)展歷史..................................................................................................21.3研究現(xiàn)狀......
8、............................................................................................................31.4研究的主要內(nèi)容和方法.................................................................