外文翻译Z计算机121魏思聪.docx
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外文翻译Z计算机121魏思聪.docx
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外文翻译Z计算机121魏思聪
毕业设计(论文)外文资料翻译
学院:
淮海工学院
专业班级:
计算机科学与技术Z计算机121
学生姓名:
魏思聪
学号:
2014140089
指导教师:
张民强
外文出处:
(外文)ANDROPHSY-Forensic
FrameworkforAndroid
附件:
1.外文原文;2.外文翻译译文
指导教师评语:
签名:
年月日
译文文章标题
ANDROPHSY-ForensicFrameworkforAndroid
I.INTRODUCTION
Nowadayssmartphonesarelikehandheldcomputers.Theycontainadiversesetofdata;frompersonaltoprofessionallife.Inanincident,smartphonescanprovideawealthofevidencetoproveordisprovefactsoftheincident.Howeverevidenceneedstobecollectedinawaythattheycannotbechallengedinacourtoflaw.Theprocessofgatheringdigitalevidencefromamobilephone,underforensicallysoundconditions,usingwellacceptedmethodsisdefinedasmobileforensics[1].Adigitalforensicinvestigationprocesscomprisesoffourmainsteps.
Firstlypreservationinvolvesidentifying,documentingandseizureofmobiledevice.Datacollectionistheprocessofobtainingrawdatafrommobiledevice.Analysisphaseiswheremeaningfuldigitalevidencerelevanttothecasewillbeextractedfromrawdatausingscientificmethods.Thereportingphasepresentsexaminedandanalysedevidenceconductedinthepreviousstepinameaningfulway[1].
Conductingamobileforensicinvestigationonsmartphoneisadauntingtaskwithoutpropersupportivetools.Forensicinvestigationprocessesandmethodsinvolvedvaryacrossmobileplatforms,devicemodelandmanufacturers.ThereisalackofknowledgeandsupportiveforensictoolsforAndroidbasedsmartphonesintheforensicsfield.ContinuousrapidgrowthofAndroidsmartphonemarketsharenecessitatestheexistenceofanAndroidforensicframeworkthatsupportsallphasesoftheforensicinvestigationprocess.
Althoughtherearefewcommercialtools[2]-[4]supportingthelifecycleofforensicinvestigation,forAndroidsmartphones,investigatorsespeciallyfromdevelopingcountriescannotaffordtheexorbitantcostofthesetools.Ontheotherhandfreetools[5],[6]donotprovideacompletesolutionandresearch[6]-[14]inthefieldaddressveryspecifictasks,suchasparticularapplicationanalysisordatacollection,outofthecompletedigitalforensicinvestigationprocess.
Thoughthereisanapparentneed,therehasbeennocompleteopensourceforensicframeworkforAndroidsmartphones,whichwillsupportinvestigatorsinallfourphasesofforensicinvestigation,tillthisstudy.Thispaperaddressedthisproblemandhasprovidedasolution"ANDROPHSY"aforensicframeworkforAndroid.
Itprovidesforensiccasemanagementandsupportsforensicinvestigatorsinallfourphasesofmobileforensicinvestigation,throughmaximizeddataacquisitiontoevidencepresentation,whilemaintaininghighforensicvalidityofevidence.
II.RELATEDWORK
DataacquisitionhasbeenahottopicinAndroidforensicfield.Vidasetal.haveproposedageneralcollectionmethodologybasedonrecoveryimage[7].Althoughuseofrecoveryimagesupportsbothlogicalandphysicalacquisition,itiscontroversialintermsofageneralsolutionasrecoveryimagedependshighlyondevicevendor,Androidversion,andkernelversion.Thestudy[8]hasimplementedacloudbasedAndroidapplicationforevidenceacquisition.
Theapplicationisdownloadedondemandontothetargetdevicefromaservice
cloudandthecollectedevidencereportisstoredonthecloud.Thoughuseofcloudprovidesanubiquitoussolution,itbreachesforensicvalidityofevidence.Useofanetworkoverridesnetworkbuffersofthetargetdeviceandthereisahighpossibilityofdownloadingmalwaresontothedevicewhichmightdestroyevidenceneededforthemajorphases[1].Useofcloudasstorageforcollectedevidenceviolatesprivacyandintegrityoftheevidence,becauseanypersonwhocangainaccesstothecloudcanview,alterordestroytheevidence.Filecopyingisanotheracquisitiontechnique.Ahamedetal.haveimplementedanAndroidapplication,copyingfilesfromdeviceinternalmemorytoSDcardpreservingthesamedirectorystructure[9].AouadandKechadihaveperformedaphysicalAcquisitionofAndroidsmartphoneusingnanddumputility[10].Accordingtotheirapproach,theyhaveusedtheSDcardtostoretheacquiredmemorydump.Nandroid[6]iscustomrecoverybasedAndroiddevicebackupmethodwhichbackupsontothedeviceorSDcard.AFLogical[5]isawell-knownopensourcelogicalacquisitionAndroidapplicationwhichusescontentproviderextraction.ItacquiresdataontotheSDcard.Itaccessesshareddatafromapredefinedsetofapplicationsandtheinstallationprocesspromptsusertograntaccesstothedata.UseofSDcarddoesnotfitinmostincidentsasmanysmartphonesusersuseamountedSDcardontheirdevicestoexpandstoragecapacityofdevices.ReplacingmountedSDcardneedsremovingdevicebattery.Mostoftheworkinexaminationand
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