Cryptographic Services Guide

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1、CryptographicServicesGuideContentsAboutCryptographicServices5AtaGlance5Encryption,SigningandVerifying,andDigitalCertificatesCanProtectDatafromPryingEyes5OSXandiOSProvideEncryptionandHashingAPIs6KeychainsHelpYouStoreSecretInformation6OSXandiOSProvideCryptographicallySecureRandomNumb

2、erGenerators6OSXandiOSProvideSecureNetworkCommunicationAPIs6DeprecatedTechnologies7Prerequisites7SeeAlso7CryptographyConceptsInDepth8WhatIsEncryption?8TypesofEncryption9SymmetricKeys9AsymmetricKeys10Diffie-HellmanKeyExchange12CryptographicHashFunctions13DigitalSignatures14DigitalCe

3、rtificates16EncryptingandHashingData21EncryptionTechnologiesCommontoiOSandOSX21KeychainServices21CryptographicMessageSyntaxServices22Certificate,Key,andTrustServices22CommonCrypto22EncryptionTechnologiesSpecifictoOSX22SecurityTransforms22CDSA/CSSM23OpenSSL24EncryptioniniOS24Managin

4、gKeys,Certificates,andPasswords252012-12-13

5、Copyright©2012AppleInc.AllRightsReserved.2ContentsCertificate,Key,andTrustServices25KeychainServices26ToLearnMore26GeneratingRandomNumbers27GeneratingRandomNumbersinOSX27GeneratingRandomNumbersiniOS28TransmittingDataSecurely29UsingtheURLL

6、oadingSystem30CFNetwork30SecureTransport31OpenSSL31ToLearnMore32CDSAOverview33AppleCDSAPlug-ins35AppleCSPModule35AppleFileDLModule35AppleCSP/DLModule36AppleX509CLModule36AppleX509TPModule36CSSMServices37CryptographicServices37DataStoreServices38CertificateServices38TrustPolicyServi

7、ces38AuthorizationComputationServices38Glossary39DocumentRevisionHistory432012-12-13

8、Copyright©2012AppleInc.AllRightsReserved.3FiguresCryptographyConceptsInDepth8Figure1-1Asymmetrickeyencryption11Figure1-2Creatingadigitalsignature15Figure1-3Verifyingadigitalsignature16Figure1-4Anat

9、omyofadigitalcertificate17Figure1-5CreatingthecertificatesfortherootCAandasecondaryCA18Figure1-6Creatingthecertificateforanenduserandsigningadocumentwithit19CDSAOverview33FigureA-1OSXimplementationofCDSA342012-12-13

10、Copyright©2012AppleInc.AllRightsReserved.4AboutCryptographicServic

11、esOSXandiOSprovideanumbero