基于容错机制的安全组播密钥管理研究

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1、r'东北大学硕士学位论文hbstractReasearchofSecureMulticastKeyManagementBasedonFault．．TolerantSchemeAbstract、矾ththerapiddevelopmentofInternet，themulticasttechnologyhasbeenappliedwidely,suchasvideoconference，financialmarketdate，long·distanceteaching．Amongallthesecureissuesinthistechnology,securitymult

2、icastisbecomingthefocusofrecentresearches．Andmulticastkeymanagementisthecruxofsolvingthesecurityproblemsinmulticast．Then—partyGDH．2multicastkeymanagementprotocolisstudiedin-depthinthispaper,andthenthefollowingproblemsisconcluded：lackofcertification，vulnerabilitytoinsiderattacks，andasingl

3、e-pointfailure，whichmeattheweaknessoffault—tolerant．Thispaperintroducesthefault-tolerantalgorithmandthepasswordauthenticationmechanismtosettletheissuesabove．Theproposedprotocolisafault-tolerantandsecuremulticastkeymanagement(FTS，forshort)．Failuredetectorisusedtodynamicallytestthemembers，

4、whichensuresthatFTSwillbeindependentfromthelocationandthestatusofgroupmembers．Inaddition．eachmemberhasauniquepasswordwiththeserver,whichisusedtoencryptordecryptthemassagesinFTSandTFArithemticupdatesthemessagesamongmembers，whichcouldeffectivelypreventinsiderattacks．Finally,tocomparemultic

5、astkeymanagementschemes，communicationcost，computationcost，memorycostandsecurityaretakenastheperformancecriteria．Throughtheoreticalandinstantiationanalysis，wecompareourprotocolwiththeFTKMfromthefouraspectsabove．FTSslightlyincreasesthecomputationcost，butgreatlyreducesthestoragecost．Inconcl

6、usion，FTSenhancesthecomprehensiveperformance，whichisalsoafault—tolerantandsecureprotocolwithoutthesingle-pointbottleneck．KeyWords：Multicast；Security；Fault-tolerant；Passwordauthentication—III—●lj—东北大学硕士学位论文目录独创性声明⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．I摘要⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯

7、⋯⋯⋯⋯⋯．IIABSTRACT⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．．III目录⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯。V第1章绪论⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯11．1IP组播概述⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．．11．2IP组播的安全问题⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．31．3IP组播密钥管理研究现状⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．