匿名通信和电子现金的研究

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1、西安电子科技大学博士学位论文匿名通信和电子现金的研究姓名：高虎明申请学位级别：博士专业：密码学指导教师：王育民20021201ABSTRACTComputernetworksespeciallyInternetarewidelyusedintheworld．Ithasbeengreatlychangingourdailylife．Thesenderandreceptorforacertainmessageshouldbekeptsecretinmanyapplications．Anonymity

2、communicatk王nisessentiallyneededinthedigitalworld．ElectronicpaymentsystemsareessentialtoolsforE-commence．Electroniccashwillplayanimportantroleinthefutureduetoitsuniqueanonymityproperty．Therearemanypracticalsystemsthatprovideanonymouscommunicationsfor

3、Internetusersandelectroniccashsystemsinoperationafterabout20yearsacademestudyintheliteratureofanonymitycommunicationandelectroniccash．Mixesnettechnologyisusedasabasictoolinanonymitycommunicationsystems．eCash⋯isthefirstemploymentelectroniccashsystemin

4、theworld．Wefocusonthefieldsofanonymitycommunicationandelectroniccashinthisdissertation．OurmaincontributionsislistedasfoIlowing：1．Anoverviewofcurrenttechniques，deploymentandresearchprojectofanonymitycommunicationispresent；2．Anewmethodformeasuringsende

5、randreceptor’Sunlinkabiltyisgivenwhichcanbeusedtojudgeaanonymitycommunicationsystem；3．Anew(t，N一2)-resilienceverifiableMixnetprotocolisproposedusingtheprimitivecryptographytoolsofShamirsecretsharescheme，EIGamalpublickeysystem，zero-knowledgeandSOonItsc

6、ommunicationcostandcomputingcostislessthanotherverifiableMixnetthatweknowpresently；4．AsecureelectronicvotingschemebasedonthenewMixnetisdesigned．Ourschemehastheproperties：voteprivacy、fairness、publicity，votingpublicverifiability、andvoter’Sanonymitysimu

7、ltaneously；5．Thenotion．design，deploymentandapplicationofelectroniccashissummarized．Someopenproblemsinthefieldarepresent；6．TwoflawsintheeCashⅢsystem2repointedout．AnewimprovedapplicablesystemforeCash7MisgiventhathasthesameefficiencywitheCashTMandalsoov

8、ercomestheflaws；7．Anoff_linerevocableanonymityeCash7Mlikeefficientapplicablesystemisdesigned．Keywords：anonymouscommunication，InformationSecurity；Mixesnet，electronicvote，electroniccash．eCashTM．独创性声明本人彦明所呈交的论文是我个人在导师指导下进行的研究工作及取得的研究成果。‘7尽我所知，除了文中特别加以标注