CA2182173A1 - Efficient Electronic Money - Google Patents

Efficient Electronic Money

Info

Publication number
CA2182173A1
CA2182173A1 CA2182173A CA2182173A CA2182173A1 CA 2182173 A1 CA2182173 A1 CA 2182173A1 CA 2182173 A CA2182173 A CA 2182173A CA 2182173 A CA2182173 A CA 2182173A CA 2182173 A1 CA2182173 A1 CA 2182173A1
Authority
CA
Canada
Prior art keywords
electronic money
efficient electronic
electronic cash
unique
electronic
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA2182173A
Other languages
French (fr)
Other versions
CA2182173C (en
Inventor
Yacov Yacobi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nytell Software LLC
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of CA2182173A1 publication Critical patent/CA2182173A1/en
Application granted granted Critical
Publication of CA2182173C publication Critical patent/CA2182173C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q20/00—Payment architectures, schemes or protocols
    • G06Q20/02—Payment architectures, schemes or protocols involving a neutral party, e.g. certification authority, notary or trusted third party [TTP]
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q20/00—Payment architectures, schemes or protocols
    • G06Q20/04—Payment circuits
    • G06Q20/06—Private payment circuits, e.g. involving electronic currency used among participants of a common payment scheme
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q20/00—Payment architectures, schemes or protocols
    • G06Q20/30—Payment architectures, schemes or protocols characterised by the use of specific devices or networks
    • G06Q20/36—Payment architectures, schemes or protocols characterised by the use of specific devices or networks using electronic wallets or electronic money safes
    • G06Q20/367—Payment architectures, schemes or protocols characterised by the use of specific devices or networks using electronic wallets or electronic money safes involving electronic purses or money safes
    • G06Q20/3678—Payment architectures, schemes or protocols characterised by the use of specific devices or networks using electronic wallets or electronic money safes involving electronic purses or money safes e-cash details, e.g. blinded, divisible or detecting double spending
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q20/00—Payment architectures, schemes or protocols
    • G06Q20/38—Payment protocols; Details thereof
    • G06Q20/382—Payment protocols; Details thereof insuring higher security of transaction
    • G06Q20/3825—Use of electronic signatures
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q20/00—Payment architectures, schemes or protocols
    • G06Q20/38—Payment protocols; Details thereof
    • G06Q20/382—Payment protocols; Details thereof insuring higher security of transaction
    • G06Q20/3829—Payment protocols; Details thereof insuring higher security of transaction involving key management
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q20/00—Payment architectures, schemes or protocols
    • G06Q20/38—Payment protocols; Details thereof
    • G06Q20/383—Anonymous user system
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/32—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials
    • H04L9/3247—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials involving digital signatures
    • H04L9/3252—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials involving digital signatures using DSA or related signature schemes, e.g. elliptic based signatures, ElGamal or Schnorr schemes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/32—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials
    • H04L9/3247—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials involving digital signatures
    • H04L9/3257—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials involving digital signatures using blind signatures
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/32—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials
    • H04L9/3263—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials involving certificates, e.g. public key certificate [PKC] or attribute certificate [AC]; Public key infrastructure [PKI] arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L2209/00—Additional information or applications relating to cryptographic mechanisms or cryptographic arrangements for secret or secure communication H04L9/00
    • H04L2209/56—Financial cryptography, e.g. electronic payment or e-cash

Abstract

A unique electronic cash (14) system protects the privacy of users (12) in legitimate transactions while at the same time enabling the detection (32) of a double spender of the same electronic coin (14). The electronic cash system takes advantage of a unique property of El Gamal signatures to achieve these results.
CA002182173A 1994-02-23 1995-02-17 Efficient electronic money Expired - Fee Related CA2182173C (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US20110694A 1994-02-23 1994-02-23
US201,106 1994-02-23
US303,048 1994-09-08
US08/303,048 US5511121A (en) 1994-02-23 1994-09-08 Efficient electronic money
PCT/US1995/002007 WO1995023465A1 (en) 1994-02-23 1995-02-17 Efficient electronic money

Publications (2)

Publication Number Publication Date
CA2182173A1 true CA2182173A1 (en) 1995-08-31
CA2182173C CA2182173C (en) 2001-01-23

Family

ID=26896402

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002182173A Expired - Fee Related CA2182173C (en) 1994-02-23 1995-02-17 Efficient electronic money

Country Status (5)

Country Link
US (1) US5511121A (en)
EP (1) EP0746923A4 (en)
JP (1) JPH09505169A (en)
CA (1) CA2182173C (en)
WO (1) WO1995023465A1 (en)

Families Citing this family (135)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7028187B1 (en) 1991-11-15 2006-04-11 Citibank, N.A. Electronic transaction apparatus for electronic commerce
US5557518A (en) 1994-04-28 1996-09-17 Citibank, N.A. Trusted agents for open electronic commerce
US10361802B1 (en) 1999-02-01 2019-07-23 Blanding Hovenweep, Llc Adaptive pattern recognition based control system and method
US5983207A (en) * 1993-02-10 1999-11-09 Turk; James J. Electronic cash eliminating payment risk
JPH07271865A (en) * 1994-04-01 1995-10-20 Mitsubishi Corp Method for managing copyright of data base
US7036019B1 (en) * 1994-04-01 2006-04-25 Intarsia Software Llc Method for controlling database copyrights
US6744894B1 (en) * 1994-04-01 2004-06-01 Mitsubishi Corporation Data management system
US6088797A (en) * 1994-04-28 2000-07-11 Rosen; Sholom S. Tamper-proof electronic processing device
US6449717B1 (en) * 1994-09-30 2002-09-10 Mitsubishi Corporation Data copyright management system
US7302415B1 (en) 1994-09-30 2007-11-27 Intarsia Llc Data copyright management system
US6741991B2 (en) * 1994-09-30 2004-05-25 Mitsubishi Corporation Data management system
EP0715241B1 (en) * 1994-10-27 2004-01-14 Mitsubishi Corporation Apparatus for data copyright management system
EP0709760B1 (en) 1994-10-27 2006-05-31 Intarsia Software LLC Data copyright management system
US6424715B1 (en) 1994-10-27 2002-07-23 Mitsubishi Corporation Digital content management system and apparatus
US5832089A (en) * 1995-06-07 1998-11-03 Sandia Corporation Off-line compatible electronic cash method and system
US5790677A (en) * 1995-06-29 1998-08-04 Microsoft Corporation System and method for secure electronic commerce transactions
US5689565A (en) * 1995-06-29 1997-11-18 Microsoft Corporation Cryptography system and method for providing cryptographic services for a computer application
FR2737032B1 (en) * 1995-07-19 1997-09-26 France Telecom SECURE PAYMENT SYSTEM BY ELECTRONIC CURRENCY TRANSFER THROUGH AN INTERBANKING NETWORK
JPH0954808A (en) * 1995-08-18 1997-02-25 Fujitsu Ltd On-line account settlement system, issue system for electronic check and inspection system
US8595502B2 (en) * 1995-09-29 2013-11-26 Intarsia Software Llc Data management system
US7801817B2 (en) * 1995-10-27 2010-09-21 Makoto Saito Digital content management system and apparatus
US5901229A (en) * 1995-11-06 1999-05-04 Nippon Telegraph And Telephone Corp. Electronic cash implementing method using a trustee
US6026163A (en) * 1995-12-13 2000-02-15 Micali; Silvio Distributed split-key cryptosystem and applications
US5671285A (en) * 1995-12-13 1997-09-23 Newman; Bruce D. Secure communication system
US5615269A (en) * 1996-02-22 1997-03-25 Micali; Silvio Ideal electronic negotiations
US6055518A (en) * 1996-02-01 2000-04-25 At&T Corporation Secure auction systems
US5878138A (en) * 1996-02-12 1999-03-02 Microsoft Corporation System and method for detecting fraudulent expenditure of electronic assets
US6076078A (en) * 1996-02-14 2000-06-13 Carnegie Mellon University Anonymous certified delivery
US6438691B1 (en) * 1996-04-01 2002-08-20 Hewlett-Packard Company Transmitting messages over a network
FR2748591B1 (en) * 1996-05-07 1998-06-05 France Telecom METHOD FOR PERFORMING A SECURE ELECTRONIC TRANSACTION WITH DOUBLE SIGNATURE
US6945457B1 (en) 1996-05-10 2005-09-20 Transaction Holdings Ltd. L.L.C. Automated transaction machine
EP0807910B1 (en) * 1996-05-16 2008-06-04 Nippon Telegraph And Telephone Corporation Electronic cash implementing method with a surveillance institution, and user apparatus and surveillance institution apparatus for implementing the same
JP3329432B2 (en) * 1996-05-29 2002-09-30 日本電信電話株式会社 Hierarchical electronic cash execution method and apparatus used therefor
US7096003B2 (en) * 1996-08-08 2006-08-22 Raymond Anthony Joao Transaction security apparatus
JPH1091866A (en) 1996-09-18 1998-04-10 Hitachi Ltd Electronic money transaction system
GB2317790B (en) 1996-09-26 1998-08-26 Richard Billingsley Improvements relating to electronic transactions
US5839119A (en) * 1996-09-27 1998-11-17 Xerox Corporation Method of electronic payments that prevents double-spending
US5913203A (en) * 1996-10-03 1999-06-15 Jaesent Inc. System and method for pseudo cash transactions
US6058381A (en) * 1996-10-30 2000-05-02 Nelson; Theodor Holm Many-to-many payments system for network content materials
US7020638B1 (en) * 1996-11-18 2006-03-28 Microsoft Corporation System and method for flexible micropayment of low value electronic assets
US5872844A (en) * 1996-11-18 1999-02-16 Microsoft Corporation System and method for detecting fraudulent expenditure of transferable electronic assets
GB9624127D0 (en) * 1996-11-20 1997-01-08 British Telecomm Transaction system
US5857023A (en) * 1996-11-25 1999-01-05 Xerox Corporation Space efficient method of redeeming electronic payments
US6021399A (en) * 1996-11-25 2000-02-01 Xerox Corporation Space efficient method of verifying electronic payments
US5952638A (en) * 1996-11-25 1999-09-14 Xerox Corporation Space efficient method of electronic payments
SG64957A1 (en) * 1996-12-04 1999-05-25 Inst Of Systems Science Nation Microprocessor card payment system
US6353812B2 (en) 1998-02-19 2002-03-05 Certco, Inc. Computer-based method and system for aiding transactions
US5903882A (en) * 1996-12-13 1999-05-11 Certco, Llc Reliance server for electronic transaction system
US6154541A (en) * 1997-01-14 2000-11-28 Zhang; Jinglong F Method and apparatus for a robust high-speed cryptosystem
US6575372B1 (en) 1997-02-21 2003-06-10 Mondex International Limited Secure multi-application IC card system having selective loading and deleting capability
US6317832B1 (en) * 1997-02-21 2001-11-13 Mondex International Limited Secure multiple application card system and process
IL120585A0 (en) * 1997-04-01 1997-08-14 Teicher Mordechai Countable electronic monetary system and method
US6467685B1 (en) 1997-04-01 2002-10-22 Cardis Enterprise International N.V. Countable electronic monetary system and method
US6328217B1 (en) 1997-05-15 2001-12-11 Mondex International Limited Integrated circuit card with application history list
US6164549A (en) 1997-05-15 2000-12-26 Mondex International Limited IC card with shell feature
US6488211B1 (en) * 1997-05-15 2002-12-03 Mondex International Limited System and method for flexibly loading in IC card
US6385723B1 (en) 1997-05-15 2002-05-07 Mondex International Limited Key transformation unit for an IC card
US6220510B1 (en) 1997-05-15 2001-04-24 Mondex International Limited Multi-application IC card with delegation feature
ES2173652T5 (en) * 1997-10-28 2010-10-13 First Data Mobile Holdings Limited PROCEDURE FOR THE DIGITAL SIGNATURE OF A MESSAGE.
WO1999026207A1 (en) * 1997-11-19 1999-05-27 Rsa Security Inc. Digital coin tracing using trustee tokens
US6736325B1 (en) 1998-01-22 2004-05-18 Mondex International Limited Codelets
US6357665B1 (en) 1998-01-22 2002-03-19 Mondex International Limited Configuration of IC card
JP3574559B2 (en) * 1998-01-27 2004-10-06 株式会社エヌ・ティ・ティ・データ Electronic ticket system, collection terminal, service providing terminal, user terminal, electronic ticket collection method and recording medium
US6742120B1 (en) 1998-02-03 2004-05-25 Mondex International Limited System and method for controlling access to computer code in an IC card
US6108644A (en) * 1998-02-19 2000-08-22 At&T Corp. System and method for electronic transactions
US6978250B1 (en) * 1998-05-22 2005-12-20 Citicorp Development Center, Inc. System and method for automated electronic scrip transactions
US6947908B1 (en) 1998-08-27 2005-09-20 Citibank, N.A. System and use for correspondent banking
RU2153191C2 (en) 1998-09-29 2000-07-20 Закрытое акционерное общество "Алкорсофт" Method for blind production of digital rsa signature and device which implements said method
JP4763866B2 (en) 1998-10-15 2011-08-31 インターシア ソフトウェア エルエルシー Method and apparatus for protecting digital data by double re-encryption
US7386727B1 (en) 1998-10-24 2008-06-10 Encorus Holdings Limited Method for digital signing of a message
RU2157001C2 (en) * 1998-11-25 2000-09-27 Закрытое акционерное общество "Алкорсофт" Method for conducting transactions
CA2371791A1 (en) 1999-02-12 2000-08-17 Mack Hicks System and method for providing certification-related and other services
US6970852B1 (en) * 1999-04-28 2005-11-29 Imx Solutions, Inc. Methods and apparatus for conducting secure, online monetary transactions
US6687822B1 (en) * 1999-06-11 2004-02-03 Lucent Technologies Inc Method and system for providing translation certificates
EP1061484A3 (en) 1999-06-11 2004-01-07 Citicorp Development Center, Inc. Method and system for controlling certificate based open payment transactions
US6529884B1 (en) * 1999-07-14 2003-03-04 Lucent Technologies, Inc. Minimalistic electronic commerce system
WO2001009793A1 (en) * 1999-07-29 2001-02-08 Privacash.Com, Inc. Method and system for transacting an anoymous purchase over the internet
AU7123900A (en) * 1999-09-10 2001-04-10 Jackson Brandenburg System and method for facilitating access by sellers to certificate-related and other services
US20020029200A1 (en) 1999-09-10 2002-03-07 Charles Dulin System and method for providing certificate validation and other services
CA2384242A1 (en) * 1999-09-24 2001-04-05 Mary Mckenney System and method for providing payment services in electronic commerce
AU5074701A (en) * 1999-10-18 2001-06-25 Douglas E. Blasiman A method and system for transacting a purchase using a credit card from the seller
AU4508001A (en) * 1999-11-29 2001-06-18 Microsoft Corporation System and method for flexible micropayment of low value electronic assets
US7222097B2 (en) * 2000-01-18 2007-05-22 Bellosguardo Philippe A Anonymous credit card
US7013293B1 (en) 2000-01-25 2006-03-14 Nds Limited Portable transaction device
FR2807248B1 (en) * 2000-03-28 2002-06-28 Gemplus Card Int PROBABILISTIC DIGITAL SIGNATURE PROCESS
JP2001344537A (en) * 2000-05-31 2001-12-14 Ntt Docomo Inc Electronic value system, communication terminal and server
AU2001267198A1 (en) * 2000-06-09 2001-12-17 Certicom Corp. A method for the application of implicit signature schemes
GB0014759D0 (en) * 2000-06-17 2000-08-09 Hewlett Packard Co Service delivery method and system
US6976162B1 (en) * 2000-06-28 2005-12-13 Intel Corporation Platform and method for establishing provable identities while maintaining privacy
US7587368B2 (en) * 2000-07-06 2009-09-08 David Paul Felsher Information record infrastructure, system and method
US6820064B1 (en) * 2000-08-31 2004-11-16 Hewlett-Packard Development Company, L.P. E-commerce consumables
US7000105B2 (en) * 2000-09-08 2006-02-14 Identrus, Llc System and method for transparently providing certificate validation and other services within an electronic transaction
EP1325599A1 (en) * 2000-09-08 2003-07-09 Guy S. Tallent System and method for providing authorization and other services
US6700076B2 (en) * 2000-09-28 2004-03-02 Eic Corporation Multi-layer interconnect module and method of interconnection
US20020128981A1 (en) * 2000-12-28 2002-09-12 Kawan Joseph C. Method and system for facilitating secure customer financial transactions over an open network
WO2002075679A2 (en) * 2001-03-21 2002-09-26 Sungold Entertainment Corp. Anonymous payment system and method
US7181017B1 (en) 2001-03-23 2007-02-20 David Felsher System and method for secure three-party communications
US20020174064A1 (en) * 2001-05-17 2002-11-21 Hong Li System and method for internet cash payment
US20020179704A1 (en) * 2001-06-05 2002-12-05 Ncr Corporation Enhanced digital wallet
US7110525B1 (en) 2001-06-25 2006-09-19 Toby Heller Agent training sensitive call routing system
EP1282087A1 (en) * 2001-08-02 2003-02-05 Alcatel Method for executing electronic money transactions between terminals of participants in a communication network; associated transaction server and program module
US7372952B1 (en) 2002-03-07 2008-05-13 Wai Wu Telephony control system with intelligent call routing
WO2003077473A1 (en) * 2002-03-13 2003-09-18 Beamtrust A/S A method of processing an electronic payment cheque
US20030225695A1 (en) * 2002-06-04 2003-12-04 Bottomline Technologies (De) Inc. System and method for producing and verifying secure negotiable instruments
SG145524A1 (en) * 2002-08-07 2008-09-29 Mobilastic Technologies Pte Lt Secure transfer of digital tokens
US7729984B1 (en) 2002-09-27 2010-06-01 Abas Enterprises Llc Effecting financial transactions
US9818136B1 (en) 2003-02-05 2017-11-14 Steven M. Hoffberg System and method for determining contingent relevance
US7676034B1 (en) 2003-03-07 2010-03-09 Wai Wu Method and system for matching entities in an auction
US8037314B2 (en) * 2003-12-22 2011-10-11 Intel Corporation Replacing blinded authentication authority
US20050251472A1 (en) * 2004-05-07 2005-11-10 Sutton David B Marketing of transaction cards
US9235841B2 (en) 2005-07-22 2016-01-12 Gtj Ventures, Llc Transaction security apparatus and method
US9911124B2 (en) 2005-07-22 2018-03-06 Gtj Ventures, Llc Transaction security apparatus and method
US9245270B2 (en) 2005-07-22 2016-01-26 Gtj Ventures, Llc Transaction security apparatus and method
US8874477B2 (en) 2005-10-04 2014-10-28 Steven Mark Hoffberg Multifactorial optimization system and method
US20070101145A1 (en) * 2005-10-31 2007-05-03 Axalto Inc. Framework for obtaining cryptographically signed consent
US20070130463A1 (en) * 2005-12-06 2007-06-07 Eric Chun Wah Law Single one-time password token with single PIN for access to multiple providers
US20070125838A1 (en) * 2005-12-06 2007-06-07 Law Eric C W Electronic wallet management
US8300798B1 (en) 2006-04-03 2012-10-30 Wai Wu Intelligent communication routing system and method
EP2016535A4 (en) * 2006-04-19 2010-06-23 Stepnexus Holdings Methods and systems for ic card application loading
FR2905187B1 (en) * 2006-08-22 2012-11-16 Ingenico Sa BIOMETRIC ELECTRONIC PAYMENT TERMINAL AND TRANSACTION METHOD
GB0621189D0 (en) * 2006-10-25 2006-12-06 Payfont Ltd Secure authentication and payment system
US8566247B1 (en) 2007-02-19 2013-10-22 Robert H. Nagel System and method for secure communications involving an intermediary
US7958057B2 (en) * 2007-03-28 2011-06-07 King Fahd University Of Petroleum And Minerals Virtual account based new digital cash protocols with combined blind digital signature and pseudonym authentication
JP5156254B2 (en) * 2007-04-17 2013-03-06 楽天株式会社 Information processing apparatus, information processing method, and information processing program
JP5138775B2 (en) * 2007-07-17 2013-02-06 サーティコム コーポレーション Method and system for generating implicit credentials and applications for ID-based encryption (IBE)
EP2026267A1 (en) * 2007-07-31 2009-02-18 Nederlandse Organisatie voor toegepast- natuurwetenschappelijk onderzoek TNO Issuing electronic vouchers
US8793487B2 (en) * 2008-01-18 2014-07-29 Identrust, Inc. Binding a digital certificate to multiple trust domains
WO2009095747A1 (en) * 2008-01-31 2009-08-06 Henri Sack Computerized system for modelling and operating public documents
US8275714B2 (en) * 2008-10-05 2012-09-25 Eugenio Rafael A Method for performing a digital cash transaction
US9621341B2 (en) * 2008-11-26 2017-04-11 Microsoft Technology Licensing, Llc Anonymous verifiable public key certificates
US9768965B2 (en) * 2009-05-28 2017-09-19 Adobe Systems Incorporated Methods and apparatus for validating a digital signature
EP3215637B1 (en) 2014-11-03 2019-07-03 F. Hoffmann-La Roche AG Methods and biomarkers for predicting efficacy and valuation of an ox40 agonist treatment
US10412098B2 (en) 2015-12-11 2019-09-10 Amazon Technologies, Inc. Signed envelope encryption
US9705859B2 (en) * 2015-12-11 2017-07-11 Amazon Technologies, Inc. Key exchange through partially trusted third party
GB201611698D0 (en) 2016-07-05 2016-08-17 Eitc Holdings Ltd Blockchain-implemented control method and system

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4759063A (en) * 1983-08-22 1988-07-19 Chaum David L Blind signature systems
US4969189A (en) * 1988-06-25 1990-11-06 Nippon Telegraph & Telephone Corporation Authentication system and apparatus therefor
US4977595A (en) * 1989-04-03 1990-12-11 Nippon Telegraph And Telephone Corporation Method and apparatus for implementing electronic cash
US5199070A (en) * 1990-12-18 1993-03-30 Matsushita Electric Industrial Co., Ltd. Method for generating a public key
US5224162A (en) * 1991-06-14 1993-06-29 Nippon Telegraph And Telephone Corporation Electronic cash system
US5222140A (en) * 1991-11-08 1993-06-22 Bell Communications Research, Inc. Cryptographic method for key agreement and user authentication
US5299263A (en) * 1993-03-04 1994-03-29 Bell Communications Research, Inc. Two-way public key authentication and key agreement for low-cost terminals

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EP0746923A1 (en) 1996-12-11
WO1995023465A1 (en) 1995-08-31
US5511121A (en) 1996-04-23
EP0746923A4 (en) 2000-11-29
JPH09505169A (en) 1997-05-20
CA2182173C (en) 2001-01-23

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