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1、ToappearinournalofSystemsandSoftware,ElsevierS
ien
e,2000.De
entralizedUserGroupAssignmentinWindowsTGail-oonAhnandRaviSandhuaboratoryfornformationSe
urityTe
hnologyandnformationandSoftwareEngineeringDepartmentGeorgeasonUniversityAbstra
tThenotionofgroupsinWindowsTismu
hliketha
2、tinotheroperatingsystems.Ratherthansetuserand lerightsindividuallyforea
handeveryuser,theadministrator
angiverightstovariousgroups,thenpla
euserswithinthosegroups.Ea
huserwithinagroupinheritstherightsasso
iatedwiththatgroup.nthispaperwedes
ribeanexperimenttoextendtheWindowsTgroupme
h
3、anismintwosigni
antwaysthatareusefulinmanaginggroup-baseda
ess
ontrolinlarge-s
alesystems.Thegoalofourexperimentistodemonstratehowgrouphierar
hies(wheregroupsin
ludeothergroups)andde
en-tralizeduser-groupassignment(whereadministratorsaresele
tivelydelegatedauthoritytoassign
ertainuse
4、rsto
ertaingroups)
anbeimplementedbymeansofi
rosoftremotepro
edure
all(RC)programs.nbothrespe
tstheexperimentalgoalistoimplementpreviouslypublishedmodels(RBAC96forgrouphierar
hiesandURA97forde
entralizeduser-groupassignment).urresultsindi
atethatWindowsThasadequate
exibilitytoa
o
5、mmodatesophisti
ateda
ess
ontrolmodelstosomeextent.eywords:Se
urity,Role-baseda
ess
ontrol,WindowsTThisworkispartiallysupportedbygrantCCR-9503560fromtheationalS
ien
eFoundationandbytheUniversityResear
hrogramofSAattheaboratoryfornformationSe
urityTe
hnologyatGeorgeasonUniver
6、sity.ApreliminaryversionofthispaperappearedunderthetitleGroupHierar
hieswithDe
entralizedUserAssignmentinWindowsT"inroeedingsofthenternationalAsso
iationofS
ien
eandTe
hnologyforDevelopment(ASTED)Conferen
eonSoftwareEngineering,asVegas,evada,
tober28-31,1998,pages352-355.Author
7、'saddress:Gail-oonAhn,nformationandSoftwareEngineeringDepartment,ailStop4A4,GeorgeasonUniversity,Fairfax,VA22030;email:gahnisse.gmu.edu.11TRDUCTGroupshavebeenusedfora
ess
ontroleversin
ethe rsttime-sharingsystemswereimplementedintheearly1970s.Agroupisa
olle
tionofusersand
