1、北京交通大學(xué)博士學(xué)位論文可信分布式計算環(huán)境的關(guān)鍵技術(shù)研究姓名：李曉勇申請學(xué)位級別：博士專業(yè)：計算機應(yīng)用技術(shù)指導(dǎo)教師：沈昌祥20080501ABSTRACTWiththerapiddevelopmentofbroadbandnetworktechnologynetworkbandwidthisbeyondthecomputingcapabilityofsinglecomputerthismakesitpossibleforcoordina

2、tingcomputingDistributedcomputingmaygrowuptobeamainstreamcomputingmodelafterC／SandB／SDistributedcomputingistosupportthejobcooperationandinformationsharing，butthisgoalhastobebuiltonthemutualtrustworthinessamongallparticip

3、atingplatformsInrealsystem，theneededtrustworthinessalwayssuffersfromvariousthreats，forexample，theclientplatformsmayworryabouttheconfidentialityoflocalinformationwhichmaybestolenortemperedbyattackerswhotakethedistributedj

4、obsashijacktools；andjobmanagersimilarlyworryabouttheintegrityandauthenticityoftheprocessingandcomputingresultsofdistributedjobsbeingdeliveredtoclientplatformswhichareoutofjobmanager’Scontr01Thispaperpresentsatriple—dimen

5、siontrusteddistributedcomputingmodel(TTDCM)forjobmanagerindistributedcomputingenvironmentTTDCMonlyconsidersthesecurityrequirementsofjobmanagersandtriestosatisfytherequirementsinfollowingthreefacets：1)Buildingconfidenceto

6、jobmanagementplatformstomakeassuretheintegrityofjobmanagement如nctions；2)Buildingconfidencetotheintegrityoftheprocessingofdistributedjobsonclientplatforms，aswellastheauthenticityoftherelatedcomputingresults；3)Buildingconf

7、idencetOtheconfidentialityofjobrelatedcodeanddatabeingdeliveredtotheclientplatformsincaseanyillegalaccessorleakageofjobrelatedsensitiveinformationInTTDCM，thetrustworthinessofjobmanagementplatformscanbeassuredbyatransitiv

8、etrustmechanismnameddynamicmulti—pathtrustchain(DMPTC)DMPTCtakesdifferentmetricstodescriptdifferentkindofcodesandsolvesthedi幣cultiesofmeasurementandverificationofthemTheothertwofacetsof1vrDCMaresatisfiedasfollows：1)Clien

9、tplatformshavetoprovidejobmanagerswithneededevidencestoprovethattheyareinjobmanager’Sexpectingstatusduringtheprocessingofdistributedjobs，TTDCMgivestwoapproachesforremoteattestationwhichincludessystembehaviorbasedcomputin