简介:Atechnologyforcombiningdigitalwatermarkswithtwo-colorbitmapimageonthethresholdwatermarkingmethodispresented.Ourtechnologydoesn'taddanythingtothedigitalmedia,butcombinesthewatermarksintwo-colorbitmapimagebylookingforsomecharacteristicvaluesinthebitmapandusestherelationshipbetweenthewatermarksandthecharacteristicvaluestoprovethecopyrightprotection.Thechoiceofthecharacteristicvaluesdependsonthechoiceofacryptographickeyknownbytheownerofthebitmap.Thebenefitofusingacryptographickeyistocomginethewatermarkswiththebitmapinahighsecureway.
简介:Aninformationhidingalgorithmisproposed,whichhidesinformationbyembeddingsecretdataintothepaletteofbitmapresourcesofportableexecutable(PE)files.Thisalgorithmhashighersecuritythansometraditionalonesbecauseofintegratingsecretdataandbitmapresourcestogether.ThroughanalyzingtheprincipleofbitmapresourcesparsinginanoperatingsystemandthelayerofresourcedatainPEfiles,asafeandusefulsolutionispresentedtosolvetwoproblemsthatbitmapresourcesareincorrectlyanalyzedandotherresourcesdataareconfusedintheprocessofdataembedding.Thefeasibilityandeffectivenessoftheproposedalgorithmareconfirmedthroughcomputerexperiments.