信息安全中的信息隐藏理论和方法研究

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1、大连理工大学博士学位论文信息安全中的信息隐藏理论和方法研究姓名：孔祥维申请学位级别：博士专业：管理科学与工程指导教师：杨德礼20030301AbstractThedigitalinformationrevolutionhasbroughtprofoundchangesintooursocietyandlife．TheprevalenceofdigitalmediaandIntemethasgeneratedgreatchallengesaswellasopportunitiesforinnovation．Digitalproductscopyright

2、protection，informationcontentsecurityandsecuritycommunicationmakeinformationhidingthatisanewscienceandartofinformationsecurityfield．Asalleffectivetechniqueusedforconvertcommunicationandcopyrightprotection，informationhidinghasdrawnalotofattentionoverthepastfeWyearsinthefieldofinf

3、ormationsecurity．Thisthesisdiscussestheissuesregardingmultimediainformationhidingtheoryandmethodformultimediacopyrightprotectionandsecuritycommunication．Italsoaddressescopyrightprotectionsystemofdigitalproducts，digitalwatermarkingsystem，steganographyevaluationandsteganalysis．Bas

4、edonthestudyofdigitalproductsdistributionchannelintheIntemetaswellasallparticipants’rightandbenefits，thepaperanalysesthefunctionsofintellectualpropertyprotectiondepartments，suchasmanagement，copyrightorganization，supervisionanddigitalwatermarking．Adigitalproductscopyrightprotecti

5、onsystemmodelbasedondigitalwatermarkinghasbeenproposedasthefinalresultofthispart．【ntherobustdigitalwatermarkingsystemspart．arobustwatermarkingembeddingmechanismandawatermarkingdetectorbasedonminimumerrorratearepresented．Basedontherobustwatermarkingmodel，ambustandblindwatermarkin

6、gschemeforprintandSCanimagesandarobustandblindwatermarkingschemeforimageobjectareproposed．Inthenlirdpart．theessencesofsteganographyanddisadvangesofcommonvisualperceptionevaluation，suchasPSNRandWPSNRarestudied．Basedonanalysislocalerrorthatisintroducedbyembeddinginformation，combin

7、ingHVS，threeobjectiveperceptionevaluationmethodforsteganographyperformanceareproposed，whicharebasedonHumanVisualSystemsandlocalstatisticerrordistributionrespectively．Inthesteganalysispart，asteganographysecuritystatisticattackmodelandmethodsforsomesteganographymethodsarepresented

8、．Accordingtothepresentedsteganalysismodel，asteg