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1、5PENGHaoetal:AMechanismBasedonReputationinP2PNetworksto…2015,Vol.*No.*,***-***ArticleIDDOITitle：字体ArialBlack，字号小一5PENGHaoetal:AMechanismBasedonReputationinP2PNetworksto…□Author如：PENG**Arial加粗五号姓前名后，姓全部大写，名首字母大写1,LU**1,2†有一个单位以上，在作者名后加上标1,2,…若学生为第一作者，导师为通讯作者，则导师名字
2、后加†,（姓前名后，姓全部大写，名首字母大写）1.Ele作者单位具体到二级单位，给出城市，timesnewroman小五号首行缩进2字符ctronicEngineeringDepartment,ShanghaiJiaoTongUniversity,Shanghai200240,China;2.SchoolofInformationSecurityEngineering,ShanghaiJiaoTongUniversity,Shanghai200240,China©WuhaTimesnewroman六号字nUniversi
3、tyandSpringer-VerlagBerlinHeidelberg2011Abstract:Arial小五加粗InP2P(Peer-to-Peer)networks,somemaliciouspeerscanimpactoverallnetworksperformance.Oneofthemaliciousbehaviorsofthesepeersismaliciouspacketdropping.Inthispaper,ourfocusistodetectandtoexcludepeersthatmisbehav
4、ebydroppingsomeorallpackets.Here,weproposeareputation-basedmechanismforsolvingtheproblemefficiently.TheproposedTimesnewroman小五mechanismusesbothdirectreputationinformationandindirectreputationinformationtocomputecomprehensivereputationofapeer.Atthesametime,history
5、reputationinformationisalsotakenintoaccountwhenprovidinginfaultstolerancecapabilityandweregulatetheimprecisionbasedonthefactthatthecauseofpacketdroppingcanbecomplex.Finally,thepeerswithbadcomprehensivereputationcanbedetectedeasilyandthenwillbeexcludedfromthenetwo
6、rk.Inthisway,ourproposedmechanismimprovestheperformanceofP2Pnetworkswithoutincreasingcomputationaloverhead.Keywords:P2P(Peer-to-Peer);reputation;maliciouspeers;packetdropping（关键词以分号隔开）CLCnumber:TP305ReceiveddateArial六号加粗:2011-06-23Timesnewroman六号Foundationitem:Su
7、pportedbytheNationalKeyBasicResearchProgramofChina(973Program)(2010CB731403)andtheOpeningProjectofKeyLabofInformationNetworkSecurityofMinistryofPublicSecurity(C09607).（注意基金格式）Biography:PENGHao,male,Ph.D.candidate,researchdirection:networkcommunicationsandinformat
8、ionsecurity.E-mail:penghao2007@sjtu.edu.cn†作者名后若有，则脚注也应该有，前后呼应Towhomcorrespondenceshouldbeaddressed.E-mail:snlu@sjtu.edu.cn0Introduction一级标题从0开始，实词首字母大写，Arial加
