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针对AES算法的时域和频域相关功耗攻击对比分析.docx

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针对AES算法的时域和频域相关功耗攻击对比分析 Abstract: Inthispaper,wediscussthetime-domainandfrequency-domainpoweranalysisattacksontheAESalgorithm.Firstly,weintroducetheAESalgorithmanditsimplementationonthehardwareplatform.Then,wedescribethetraditionaltime-domainpoweranalysis(TDPA)attackandtheadvanceddifferentialtime-domainpoweranalysis(DPA)attack.Next,wefocusonfrequency-domainpoweranalysis(FDPA)attackanditsadvantagesoverTDPA/DPAattacks.Finally,wepresentacomparativeanalysisofTDPA/DPAandFDPAattacksontheAESalgorithm. Introduction: Cryptographicalgorithmsaredesignedtoprotectsensitiveinformationfromunauthorizedaccess.However,duetotheincreasingsophisticationofattackers,thesealgorithmsmustbeconstantlyupdatedtoensuretheirsecurity.Onesignificantareaofvulnerabilityisthepowerconsumptionofcryptographicdevices.Poweranalysisattacksareacommonformofattack,whichanalyzethepowerconsumptionofacryptographicdevicetoextractsecretkeys.TheAESalgorithmiswidelyusedinmanyapplications,suchassecurecommunication,datastorage,andfinancialtransactions.Therefore,itisnecessarytoanalyzethepowerconsumptionoftheAESalgorithmtoidentifypotentialvulnerabilities. AESAlgorithm: TheAdvancedEncryptionStandard(AES)isasymmetric-keyblockcipheralgorithmthatencryptsdataintoblocksof128bits.IthasbeenadoptedbytheUSgovernmentasastandardforprotectingclassifiedinformation.AEShasthreekeylengths:128-bit,192-bit,and256-bit,andusesdifferentnumbersofroundsforencryptiondependentonthekeylength.AESistypicallyimplementedusinghardwareplatforms,suchasFPGAs(FieldProgrammableGateArrays)orASICs(Application-SpecificIntegratedCircuits). Time-DomainPowerAnalysis(TDPA)Attack: TDPAisbasedontheprinciplethatthepowerconsumptionofacryptographicdeviceisproportionaltothedataprocessedandtheoperationsperformed.Anattackercanobservethepowerconsumptionofadeviceduringtheencryptionprocessandusestatisticaltechniquestoinferthesecretkey.TheattackercanusetwotypesofTDPAattacks:simplepoweranalysis(SPA)anddifferentialpoweranalysis(DPA). SPAisastraightforwardattackthatinvolvesobser