Financial Cryptography

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

Includes supplementary material: sn.pub/extras

Klappentext

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,EcoleNormaleSuperieure 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. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Inhalt
Managing Payment Transaction Costs.- Amortized E-Cash.- Offline Micropayments without Trusted Hardware.- Panel (I).- The Practical Problems of Implementing MicroMint.- Protecting Digital Rights.- Aspects of Digital Rights Management and the Use of Hardware Security Devices.- A Solution to the Napster Phenomenon: Why Value Cannot Be Created Absent the Transfer of Subjective Data.- Golden Times for Digital Rights Management?.- Applicability of Public Key Cryptosystems to Digital Rights Management Applications.- Trust and Risk Management.- On the Global Content PMI: Improved Copy-Protected Internet Content Distribution.- Trust: A Collision of Paradigms.- Groups and Anonymity.- On the Security of Homage Group Authentication Protocol.- Anonymity without 'Cryptography'.- Fair Tracing without Trustees.- Invited Talk.- Why the War on Money Laundering Should Be Aborted.- Certificates and Authentication.- Provably Secure Implicit Certificate Schemes.- Nonmonotonicity, User Interfaces, and Risk Assessment in Certificate Revocation.- Mutual Authentication for Low-Power Mobile Devices.- Credit Card Security.- Off-Line Generation of Limited-Use Credit Card Numbers.- A Security Framework for Card-Based Systems.- SecureClick: A Web Payment System with Disposable Credit Card Numbers.- Panel (II).- The Business of Electronic Voting.- Markets and Multiparty Computation.- Privacy for the Stock Market.- Secure Distributed Computing in a Commercial Environment.- Signatures in Financial Cryptography.- Monotone Signatures.- The Power of RSA Inversion Oracles and the Security of Chaum's RSA-Based Blind Signature Scheme.- Optimistic Fair Exchange with Transparent Signature Recovery.- Auctions.- (M + 1)st-Price Auction Protocol.- Non-interactive Private Auctions.