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1、1UsingP3Pinawebservices-basedcontext-awareapplicationplatform2MartijnZuidweg,JoséGonçalvesPereiraFilho,MartenvanSinderenCentreforTelematicsandInformationTechnology,UniversityofTwentePOBox217,7500AEEnschede,TheNetherlands{zuidweg,filho,sinderen}@cs.utwente.nlAbstract
2、privacy.Iftherisksofprivacyviolationwhenusingacontext-awareapplicationcannotbees-Thispaperdescribesaproposalforaprivacytimated,usersmaybeunwillingtousesuchacontrolarchitecturetobeappliedintheWASPsystem.Thisiswhyprivacycontrolisessentialproject.TheWASPprojectaimstode
3、velopacontext-awareserviceplatformontopof3Ginthedesignofacontext-awarecomputingnetworks,usingwebservicestechnology.Theplatform.proposedprivacycontrolarchitectureisbasedonThispaperaimsatprovidingaprivacycon-theP3Pprivacypolicydescriptionstandardde-trolarchitecturefor
4、thecontext-awareapplica-finedbyW3C.ThepaperidentifiesextensionstotionplatformdevelopedintheWASPprojectP3Panditsassociatedpreferenceexpressionlan-guageAPPELthatareneededtooperateina(seesection2).Theproposedprivacycontrolcontext-awareenvironment.mechanismisbasedonP3P[
5、7].Therestofthispaperisstructuredasfol-lows.Section2presentsaquickoverviewofthe1IntroductionWASPplatform.TheapplicabilityofP3Pinacontext-awareplatformsuchasWASPisex-Context-awarecomputingisanemergingcom-plainedinsection3.Section4identifiestheex-putingparadigmthattri
6、estoexploitinformationtensionsneededtoP3Ptobeusedforcontext-aboutthecontextofitsuserstoprovideneworawarewebservices.Section5depictsthepri-improvedservices.vacycontrolarchitectureofWASP,usingP3P.DeyandAbowd[1]havedefinedcontextasFinally,section6containsconclusionsand
7、pre-“anyinformationthatcanbeusedtocharacter-sentsfutureworktobedone.izethesituationofanentity.Anentityisaper-son,place,orobjectthatisconsideredrelevant2WASPtotheinteractionbetweenauserandanappli-cation,includingtheuserandapplicationsthemselves”.Thisdefinitioniswidel
8、yusedinIntheWASP(WebArchitecturesforServicesliteraturetoday.Platforms)project[8],theUniversityofContext-awarecomputingenvironmentsTwente,E
