关于trivium算法设计的研究_英文_

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1、北京大学学报(自然科学版)，第46卷，第5期，2010年9月ActaScientiarumNaturaliumUniversitatisPekinensis，Vol.46，No.5(Sept.2010)OntheDesignofTriviumTIANYun，CHENGongliang，LIJianhuaSchoolofInformationSecurityEngineering，ShanghaiJiaotongUniversity，Shanghai200240;E-mail:ruth_tian@163.comAbstractInordertodiscussthedesignpri

2、nciplesofstreamciphers，Trivium，acandidatecipherineSTREAM，isstudied.Researchaboutitssecurityandefficiencyissummarized.Basedonthemodelingstructureofthealgorithmandthedefinitionofk-orderprimitivepolynomials，newdesignprinciplesofstreamciphersareillustrated.ImprovementsandnewdesignofTriviumaregivena

3、ccordingtotheprinciples.KeywordseSTREAM;Trivium;designprinciplesofstreamciphers关于Trivium算法设计的研究田芸陈恭亮李建华上海交通大学信息安全工程学院，上海200240;E-mail:ruth_tian@163.com摘要分析了eSTREAM项目中Trivium算法的安全性和有效性，并将该算法结构进行模型化，引入k阶本原多项式的定义。阐述了设计Trivium型流密码的准则，并根据这些准则给出Trivium算法的改进以及新的Trivium型流密码算法。关键词eSTREAM;Trivium;流密码的设

4、计准则中图分类号TP309［1］TheECRYPTstreamcipherproject，partofastreamcipher.NowtherearemanystrategiesabbreviatedeSTREAM，isamulti-yearefforttoidentifyandwaystodesignasecureandefficientkeystreamnewstreamcipherspotentiallysuitableforwidespreadgenerator，includingLFSRs，FCSRs，NLFSRs，T-adoption.Inlate2004eSTREAM

5、announcedacallforfunctionsandsoon.Formanyyears，thestreamnewstreamcipherproposalsandnolessthan34ciphersusedarekeptsecretandlackopendiscussiondifferentstreamcipherproposalsweresubmittedintwoofsecurityandattacks，whichmayleadtofatalfailureperformanceprofiles，softwareorientedandhardwarewhenthealgori

6、thmisleaked.Forexample，misuseoforiented.Nowtheprojecthasselectedaportfolioof7RC4inWiredEquivalentPrivacy(WEP)protocolpromisingnewstreamciphers.decreasedthesecurityoftheprotocol.AstreamcipherisasymmetricencryptionAlthoughblockciphersseemtobeperfectlyalgorithmwhichtakesastreamofplaintext，asecreta

7、dequateforuseinnearlyallareas，streamciphersarekeyandanIV(initialvalue)asinputandthenstilldesirableinafewnicheareas，whichispointed［2］operatestheplaintextwithkeystreamgeneratedbytheoutbyShamiratthefirstECRYPTstateoftheartofkeyandIV，