Financial Cryptography
5th International Conference, FC 2001, Grand Cayman, British West Indies, February 19-22, 2001. Proceedings
Herausgegeben: Syverson, Paul F.
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The?fthFinancialCryptographyconferencewasheldFebruary19 22,2001. Afterhalfadecade,wemovedbeyondourAnguillanoriginstoGrandCayman, BWI. Thevenuechangedbutthefocusoftheprogramremainedtopresentthe bestresearchinsecuringelectronic?nancialtransactionsandelectronicc- merce. Asinthepastfewyears,mostofthecontributedpapersfocusedonthe technicalcryptographicandsecurityaspectsof?nancialcryptography,whilethe ?nancialaspectsarere?ectedprimarilyininvitedtalksandpanels. (Andinthe informaldiscussion. )Thisyear,inadditiontothesubmittedpapers,wehada provocativeinvitedtalkbyRichardRahnonmoneylaunderingaswellaspan...
The?fthFinancialCryptographyconferencewasheldFebruary19 22,2001. Afterhalfadecade,wemovedbeyondourAnguillanoriginstoGrandCayman, BWI. Thevenuechangedbutthefocusoftheprogramremainedtopresentthe bestresearchinsecuringelectronic?nancialtransactionsandelectronicc- merce. Asinthepastfewyears,mostofthecontributedpapersfocusedonthe technicalcryptographicandsecurityaspectsof?nancialcryptography,whilethe ?nancialaspectsarere?ectedprimarilyininvitedtalksandpanels. (Andinthe informaldiscussion. )Thisyear,inadditiontothesubmittedpapers,wehada provocativeinvitedtalkbyRichardRahnonmoneylaunderingaswellaspanels ondigitalrightsmanagementandthebusinessofelectronicvoting. Therewas alsoarumpsession,chairedbyRebeccaWright. Thereweremanyinterestingandmanytechnicallystrongsubmissions. I thanktheprogramcommittee(listedonthenextpage)fortheirhelpinthe di?culttaskofchoosingthosepapersthatmadethestrongestcontributionto theconference. WehadadditionalreviewinghelpfromOlivierBaudron,Paul Fahn,JuanGaray,MarkusJakobsson,GuenterKarjoth,PhongNguyen,David Pointcheval,ThomasPornin,SholomRosen,DawnSong,SusanneWetzel,and RebeccaWright. (MyapologiesifIhaveoverlookedanyone. )Iwouldalsoliketo thankGeorgeDavida,theelectronicsubmissionschair,andhisstudent,Dawn MarieGibson,forsettingupandrunningthesubmissionsprocessattheUniv- sityofWisconsin. AnextrabigthankyoutoYairFrankel,whowasalwaysthere withhisexperienceandadvicethatgreatlyimprovedthejobIdidasprogram chair,aswellasmakingitmoreenjoyable. MattFranklinalsoprovidedvaluable advice. Thankstoallthepeoplewhosubmittedpapers,withoutwhichthere wouldbenoprogram. Authorsweregiventheopportunitytorevisetheirpapers followingtheconference. Thesewerecollectedwithoutfurtherreviewandare includedinthisvolume. ThankstogeneralchairStuartHaberfordoingmanythingsthatnoneofthe attendeesnoticedbecausehedidthemsonicely. HewasablyassistedbyHinde tenBerge. ThankstoHarrisMcCoyforhandlinglocalarrangementsandJason CronkformaintainingtheWebsite. ThankstotheIFCAdirectorsforkeeping FCthriving,toAdamShostackforvenuearrangements,andtoBarbFox,the sponsorshipchair. Thankstoour?nancialsponsors,whoarelistedonthenext page. SpecialthankstoRayHirschfeldwhoseadvicetomeandtotheothersm- tionedherehasbeeninvaluable. Thanks?nallytoattendeeswithoutwhomthere wouldbenoconference. March2001 PaulSyverson VI Preface ProgramCommittee MattBlaze,AT&TLabs-Research YairFrankel,Ecash MattFranklin,UCDavis DavidKravitz,WaveSystemsCorp. ArjenLenstra,Citicorp PhilipMacKenzie,LucentBellLabs AviRubin,AT&TLabs-Research JacquesStern,EcoleNormaleSup erieure KazueSako,NEC StuartStubblebine,CertCo PaulSyverson(Chair),NavalResearchLab WinTreese,OpenMarket,Inc. DougTygar,UCBerkeley MichaelWaidner,IBMZurichResearchLab MotiYung,CertCo GeneralChair StuartHaber,Intertrust SponsorshipChair BarbFox,Microsoft FinancialCryptography2001wasorganizedbytheInternationalFinancialCr- tographyAssociation(IFCA),andwassponsoredbyBibitInternetPayments, CertCo,Certicom,HushCommunications,IBM,InterTrustSTARLab,- crosoft,nCipher,RSASecurity,andZero-KnowledgeSystems. TableofContents ManagingPaymentTransactionCosts AmortizedE-Cash . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 MosesLiskov,SilvioMicali O?ineMicropaymentswithoutTrustedHardware. . . . . . . . . . . . . . . . . . . . . . 21 MattBlaze,JohnIoannidis,AngelosD. Keromytis Panel(I) ThePracticalProblemsofImplementingMicroMint. . . . . . . . . . . . . . . . . . . . 41 NickovanSomeren ProtectingDigitalRights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51 YairFrankel AspectsofDigitalRightsManagementandtheUseofHardwareSecurity Devices. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54 DavidW. Kravitz ASolutiontotheNapsterPhenomenon:WhyValueCannotBeCreated AbsenttheTransferofSubjectiveData. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59 ScottMoskowitz GoldenTimesforDigitalRightsMan
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