数字版权管理关键技术及应用研究

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1、西安电子科技大学博士学位论文数字版权管理关键技术及应用研究姓名：裴庆祺申请学位级别：博士专业：密码学指导教师：马建峰20071201ABSTRACTTheobjectofdigitalmediacontentprotectionusuallyincludestext,image，audio,videoandothermediums．Withtherapiddevelopmentofdigitaltechnologiesandtheextensiveapplications，thehternet,mobilenetworksandotheremergingtelecom

2、municationsmodesandmobilephones，set-topboxes，computersandothermultimediaterminalshavegreatlyexpandedthetransmissionscopeofdigitalmediacontent．Asthedigitalmediumhavethecharacteristicsofbeinglosslassreproducedanddistributed,thephenomenonofusingdigitaltechnologyandtheintemetfreelytoreprodu

3、ceanddistributethedigitalmediaproductsandthecontentprotectedbyintellectualpropertyiswidespread．Ifthereisnodigitalmediacopyrightmanagementandcontentprotection,whichwillleadtoseriousnegativephenomena,breedingmassivepiracyandthenon-standardUSewouldnotonlyhaveenormoueffectondigitalmediaindu

4、stry，butalsogreatlyiIljtireoureconomics，socialityandculture．Currently,digitalcopyrieatprotectionissuehascausedacommonconcernfromnationalgovernments，law,mediaandindustry,andotherparties．Practicalexperienceandthestudyinrecentyearsshowthatitisnotjustlegalmeantoprotectthecopyrightofdigitalc

5、ontent,anditisextremelyimportanttoadoptrelatedtechnicalmeasures．Tllispaperfocusesonthedomainmanagement,at北．,essauthentication,keymanagement．rightsmanagementandotherissuesinDRMsystem．Onthebasisofdeepanalysisofexistingtechnologies，standardsandsystems，somenewideasandschemestosolvetheapplic

6、ationproblemsofDRMsystemareproposed．Themainresearchresultsareasfollows：1．Anewdomainmanagementmodelwhichcallhidecomponentswithinthedomainisproposed，andanauthorizeddevicescanpurchasethedomainlicenseforthedomain．Licenseservercanvcri句thedevicewhetheritiSamemberofsomecertaindomain．Whenallill

7、egaldeviceappearedinthedomain,itCanalsobetraced．2．AnewDRMdeviceauthenticationmethodintheuserdomaintomeettheauthenticationrequirementbetweenthedevicesinaDRMsystem,aswellastwoaccessauthenticationschemessuitableforDRMsystemareallproposed．OneschemeisbasedonPKI，andtheotherisbasedoni