电子商务安全体系中数字签名技术的应用

:2004-03-30:,(1970-),,,,1992,:10090207(2004)030081-03(,830091):,;RSAMD5,;:;;;:TP309.7:A,Internet,Internet,,,,,1,:(1),(2),,,,,,;,;,,,2,,1816320049JournalofXinjiangPetroleumInstituteVol.16No.3Sep.2004©1995-2004TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.北斗社区;,,,211,,,,DES,,,DES,DES64,56,64,64,DES,,,,,,,PKSK,,,,RSA,,,RSA,RSA1:1RSA1,ASKAMC1,BPKBC1C2BC2SKBC1,PKAC1MSKA,M,,,M,2.2H(),m,H(m),:(1)m,H(m),H(m)m(2)m1m2,H(m1)H(m2)(3)mH(m)282004©1995-2004TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.北斗社区(4)H(m)(5)H(m)mMD5,128512MD5,64512:1,0,1000...064n512,Y0,Y1,...Yn-1MD5512n5121282.3,RSAMD5,,2:3,:(1),M;(2)MD5C;(3)RSASK,C1;(4),+C1+M;(5);(6),C1M;(7)RSAPKC1,C;(8)MDSMC;(9)CC,,,,,,,2.4,,,,,ABABI,I,,BI,,,,,AM:ASKA,BPKB,SKAAIDA,IDAI,MB,IIM,,A,ASKAI,PKASKA,,IBPKB,IDAMTAB:(1)AI:IDA||ESKA(IDA||EPKB(ESKA(M)))38163:©1995-2004TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.北斗社区(2)IB:EPKB(IDA||(EPKB(ESKA(M))||T),,;ABI,3,,,,,:[1],.[M]1:,20011[2]1[M].:,20031[3]()1:[M].:,20021[4].[M].:,20021(72),,,5(1),,,,0161114,0181132(2),,(3)Re,,,(4)SINsPm2(P)P2TKLmmReKgPm3Kg+Pm3()RaýgmPs2mPs2PNPm2Kg+Pm2PPLNPm3Kg+Pm3umPsmPsDmm:[1],,1[M]1:,19861[2]1[M]1:,19871[3],1[J]1AICHE,1975,21(4)1[4],,1[M]119721482004©1995-2004TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.北斗社区,2004,16(3):7072Abstract:Thecharacteristicoftheflowobstructionofwaterincarbonsteeltube,stainlesssteeltubeandredcoppertubeisdeterminedbytheexperimentinthepaper,superficialroughnessandsmoothfinishofthreekindsoftubesareanalysedwiththeinstruments;andtheobsuructioncoefficientdifferenceisanalysedanddiscussed.Resultsprovethattheobsuructioncoefficientofredcoppertubesandstainlesssteeltubessupperficiesare0.801.32and0.601.14,whicharelowerthanthatofcabonsteelssuperficiesintherangeofReoftheexperiment.KeyWords:Theobstructioncoefficient;roughness;smoothfinish;stainlesssteel;carbonsteel;redcopperPRACTICALWAYOFDEMAGNETIZATIONFORWELDS/FANGFei.XinJiangSiFangBoilerCompanyUrumqi,XinJiang83000/XinjiangShiyouXueyuanXuebao,2004,16(3):7375Abstract:Magnetizationofweldsisanobstructioninthecourseofwelding,whichaffectstheweldingprocessdirectly.Severalmainwaysofdeagnetizationforweldsareintroducedfrompracticalexperienceinthepaper.Itisproventhatwaysofelectromagneticinductionandpermanentmagnetaresimple,time2savingandalsoeffective.Butatthesametime,thedirectionandstrengthofmagneticfieldinweldsshouldbemadeclearanddistributionpatternofmagneticfieldshouldbeknownwellbeforedemagnetization.Degreesofdemagnetizationshouldbeexaminedinthecourseofitincaseanewmagneticfieldshouldcomeintobeingintheoppositedirectionofresidualmagnetism.KeyWords:Weld;Welds;Demgnetization;WaySTUDYONTHEREINFORCEMENTDESIGNFORTHEEXISTENTBUILDINGS/JIANPing2zhou,YANChun2liu,JIANZhu2zhang,etal.QingdaoBuildingEngineeringQualitySupervisionBureau,ShanDongQingdao,266071/XinjiangShiyouXueyuanXuebao,2004,16(3):7677Abstract:Thedisadvantageofthereinforcementdesignfortheexistentbuildingswasbroughtforwardinthispaper,andthenewideaaboutthereinforcementdesigntowardtheexistentbuildingswasstudiedandtheresearchdirectionwasproposedatlast,too.KeyWords:existedbuilding;loadresistance;strengthen;designSTRUCTUREOFAWORKFLOWENGINEBASEDONRELATIONSHIP/TAOFu2lian,ZHANGXue2qun.BaiKouQuanOilRecoveryPlant,XinJiangOilfieldcompany,KaramayXinJiang834011/XinjiangShiyouXueyuanXuebao,2004,16(3):7880Abstract:Thisarticleprimarilyintroducedamethodtobuildaworkflowenginebasedonrelationship,especiallytheinformationmodelandthecontrolmodel.Attheendofthearticle,andanexampleofapplicationofthismethodisintroducedatlastinthepaper.KeyWords:workflow;workflowengine;relationshipAPPLICATIONOFDIGITALSIGNATUREINTHESECURITYSYSTEMOFELECTRONICCOMMERCE/SUNHong.DepartmentofComputerEngineering,XinjiangEngineeringCollege,Urumchi830091/XinjiangShiyouXueyuanXuebao,2004,16(3):8184Abstract:Aimingatthesecurityofelectroniccommerce,thepaperintroducesthedigitalsignaturebasedoncryptography;ThepaperpresentsanapplicationprojectofdigitalsignatureaccordingtoRSAalgorithmandMD5messagedigestalgorithm.Thepaperalsodiscussesthedigitalsignaturebasedonarbitration.KeyWords:electroniccommerce;digitalsignature;messagedigest;arbitrationVol.16No.3Sep.2004JournalofXinjiangPetroleumInstitute(EditionofNaturalScience)©1995-2004TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.北斗社区