網格環(huán)境下基于信任的動態(tài)角色訪問控制的研究.pdf

1、學科門類王芏分類號：—!墮塑一單位心日：—j些里L督緞——舟一杰啷窟z碧碩士學位論文論文題目：旦鱉塹撞工墨王笪堡塑墊查角色訪問控制的研究學生姓名張梅學號Y041006指導教師學科專業(yè)至塑堡墼堡!豎量計算機軟件與理論研究方向基于網絡的計算機軟件應用技術論文提交日期二00七年三月南京郵電大學碩士研究生學位論文ABSTRACTABSTRACTGridisaconceptcomingfromElectricityGrid，itisanewtec

2、hniquebasedonInternetTheaimofgddcomputingsystemisatintegrationandorganizationofthedistributed，isomerousanddynamicresources，toletthemaccessedconvenientlyonceneedingthemFortheisomerousrecourcesacnodeCanbeconnectedbyGridtob

3、ecomeaglobalenormouscomputingsystem，theGridhasbeengotthehighattentionofeachcountryandorganizationBut’thesecurityproblemsonInternethavenotgotagoodsolution，andGridcomputingsystemhasitsowntraits，SOthesecurityproblemsofGrida

4、remorecomplicatedthanonInteractAlongwithcomingintobusinessdomain，thesecurityproblemsarebecomingmoreandmoreimportant，tesolvethemhasahighpriorityIngddcomputingsystem，thetrustrelationbetweenresourcevendorandresourceuseristh

5、epremiseofsafecommunication，forthetraitsondistributionanddynamic，thetrustbetweeneachotherinadvanceisimpossible，howeveritCanberesolvedbyimportingtrustmechanismtBACinGridcommunitythetrustdegreeofeachGridentityCanbecountedb

6、asedonthefeedbackfromotherentities，andthentheirroles御℃changedbasedontheirtrustdegreesOnusingthispolicythedynamictraitisrealizedinGridandthecheatbehaviorofGridentityalsocanbeavoidedFirstlythispapernarratesthegridcomputing

7、systemanditsdemandonsafetySecondlyapolicyisworkedupbasedondeeplyanalyseofRBACandtrustmechanism，itadvisestoimportingtrustmechanismtBACinGridcommunityforimprovingsystemsecurityanddynamicLastlythefeasibilityandsecurityofthe