細粒度數(shù)據(jù)完整性檢驗算法研究.pdf

1、重慶郵電大學(xué)碩士學(xué)位論文細粒度數(shù)據(jù)完整性檢驗算法研究姓名：田健申請學(xué)位級別：碩士專業(yè)：計算機應(yīng)用技術(shù)指導(dǎo)教師：陳龍20100528AbstractInrecentyears，computercrimespublicstabilityComputerforensicsiscrimeThekeyofcomputerforensicsevidencesfromthepointoflawhavemadedetrimentalinfluenceu

2、ponanimportanttooltodealwithcomputerisassuringtheproveabilityofdigitalForthedigitizedcharacterofdigitalevidence，itiseasytobedeletedforged，tamperedanditishardtonoticetheseactionsInordertoimprovetheavailabilityofevidence，F(xiàn)

3、inegraineddataintegritycheckbecomesthenewrequirementofcomputerforensicsFinegraineddataintegritycheckcannotonlychecktheintegrityofthedatabutalsoisolatethedamageddataobjectsaccuratelyandefficientlyThemethodcouldmitigatethe

4、disastrouseffectthatallthedatabecomeinvalidcausedbyaccidentalerrorsorintentional一‘torgingmodificationBecauseeachtimethedatathatcurrentFinegraineddataintegritycheckmethodcanprocessislimited，thismaycausethewasteofcompreSSi

5、onratioToimprovethecompressionratioofFinegraineddataintegritvcheckmethodandToachievethecomplementationwithotherintegritycheckcode，UsingthespecialcombinationrelationshipexpressedbySteinerTripleSystemtoactualizethecrossexa

6、minationbetweendataobjectsandHashobjects，anoveldataintegrityindicationcodeisproposedtoimprovetheerrorindicationefficiencyTheconstructionprincipleoftheintegrityindicationcodeispresentedandtheperformancesofthecodeareanalyz

7、edAnalysisandexperimentalresultsshowthatthiscodeiseffectivewithhighercompressionratioAtlast，thefinegraineddataintegritychecktooltoindicatetwoerrorisimplementedinthispaperThistoolusesfewerhashdatatoindicateintegrityofmore

8、dataItwillindicateerrorsaccuratelyindesignedscope，andifgoesbeyond，italsohasthecheckabilityItwillcompressmasshashdataeffectivelyandsavethepreservingspaceItmitigatesthedisastereffectbyaccidentalerrorsorforgeddataItiSpracti