Off-line compatible electronic cash method and system

Kravitz, David W; Gemmell, Peter S; Brickell, Ernest F

Advanced Search OptionsAdvanced Search queries use a traditional Term Search. For more info, see our FAQ.

All Fields:

Patent Title:

Abstract:

Assignee:

Inventor(s):

Patent Number:

Patent Classification (CPC):

All Classifications
A - human necessities
A01 - agriculture
A21 - baking
A22 - butchering
A23 - foods or foodstuffs
A24 - tobacco
A41 - wearing apparel
A42 - headwear
A43 - footwear
A44 - haberdashery
A45 - hand or travelling articles
A46 - brushware
A47 - furniture
A61 - medical or veterinary science
A62 - life-saving
A63 - sports
A99 - subject matter not otherwise provided for in this section
B - performing operations
B01 - physical or chemical processes or apparatus in general
B02 - crushing, pulverising, or disintegrating
B03 - separation of solid materials using liquids or using pneumatic tables or jigs
B04 - centrifugal apparatus or machines for carrying-out physical or chemical processes
B05 - spraying or atomising in general
B06 - generating or transmitting mechanical vibrations in general
B07 - separating solids from solids
B08 - cleaning
B09 - disposal of solid waste
B21 - mechanical metal-working without essentially removing material
B22 - casting
B23 - machine tools
B24 - grinding
B25 - hand tools
B26 - hand cutting tools
B27 - working or preserving wood or similar material
B28 - working cement, clay, or stone
B29 - working of plastics
B30 - presses
B31 - making articles of paper, cardboard or material worked in a manner analogous to paper
B32 - layered products
B33 - additive manufacturing technology
B41 - printing
B42 - bookbinding
B43 - writing or drawing implements
B44 - decorative arts
B60 - vehicles in general
B61 - railways
B62 - land vehicles for travelling otherwise than on rails
B63 - ships or other waterborne vessels
B64 - aircraft
B65 - conveying
B66 - hoisting
B67 - opening, closing {or cleaning} bottles, jars or similar containers
B68 - saddlery
B81 - microstructural technology
B82 - nanotechnology
B99 - subject matter not otherwise provided for in this section
C - chemistry
C01 - inorganic chemistry
C02 - treatment of water, waste water, sewage, or sludge
C03 - glass
C04 - cements
C05 - fertilisers
C06 - explosives
C07 - organic chemistry
C08 - organic macromolecular compounds
C09 - dyes
C10 - petroleum, gas or coke industries
C11 - animal or vegetable oils, fats, fatty substances or waxes
C12 - biochemistry
C13 - sugar industry
C14 - skins
C21 - metallurgy of iron
C22 - metallurgy
C23 - coating metallic material
C25 - electrolytic or electrophoretic processes
C30 - crystal growth
C40 - combinatorial technology
C99 - subject matter not otherwise provided for in this section
D - textiles
D01 - natural or man-made threads or fibres
D02 - yarns
D03 - weaving
D04 - braiding
D05 - sewing
D06 - treatment of textiles or the like
D07 - ropes
D10 - indexing scheme associated with sublasses of section d, relating to textiles
D21 - paper-making
D99 - subject matter not otherwise provided for in this section
E - fixed constructions
E01 - construction of roads, railways, or bridges
E02 - hydraulic engineering
E03 - water supply
E04 - building
E05 - locks
E06 - doors, windows, shutters, or roller blinds in general
E21 - earth drilling
E99 - subject matter not otherwise provided for in this section
F - mechanical engineering
F01 - machines or engines in general
F02 - combustion engines
F03 - machines or engines for liquids
F04 - positive - displacement machines for liquids
F05 - indexing schemes relating to engines or pumps in various subclasses of classes f01-f04
F15 - fluid-pressure actuators
F16 - engineering elements and units
F17 - storing or distributing gases or liquids
F21 - lighting
F22 - steam generation
F23 - combustion apparatus
F24 - heating
F25 - refrigeration or cooling
F26 - drying
F27 - furnaces
F28 - heat exchange in general
F41 - weapons
F42 - ammunition
F99 - subject matter not otherwise provided for in this section
G - physics
G01 - measuring
G02 - optics
G03 - photography
G04 - horology
G05 - controlling
G06 - computing
G07 - checking-devices
G08 - signalling
G09 - education
G10 - musical instruments
G11 - information storage
G12 - instrument details
G16 - information and communication technology [ict] specially adapted for specific application fields
G21 - nuclear physics
G99 - subject matter not otherwise provided for in this section
H - electricity
H01 - basic electric elements
H02 - generation
H03 - basic electronic circuitry
H04 - electric communication technique
H05 - electric techniques not otherwise provided for
H99 - subject matter not otherwise provided for in this section
Y - new / cross sectional technologies
Y02 - technologies or applications for mitigation or adaptation against climate change
Y04 - information or communication technologies having an impact on other technology areas
Y10 - technical subjects covered by former uspc

More Options ...

Title: Off-line compatible electronic cash method and system

Abstract

An off-line electronic cash system having an electronic coin, a bank B, a payee S, and a user U with an account at the bank B as well as a user password z.sub.u,i, has a method for performing an electronic cash transfer. An electronic coin is withdrawn from the bank B by the user U and an electronic record of the electronic coin is stored by the bank B. The coin is paid to the payee S by the user U. The payee S deposits the coin with the bank B. A determination is made that the coin is spent and the record of the coin is deleted by the bank B. A further deposit of the same coin after the record is deleted is determined. Additionally, a determination is made which user U originally withdrew the coin after deleting the record. To perform these operations a key pair is generated by the user, including public and secret signature keys. The public signature key along with a user password z.sub.u,i and a withdrawal amount are sent to the bank B by the user U. In response, the bank B sends a coin to the user U signed by the secretmore » « less

Inventors:

Kravitz, David W ^[1]; Gemmell, Peter S ^[1]; Brickell, Ernest F ^[1]

Albuquerque, NM

Issue Date:: 1998-01-01

Research Org.:: Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA (United States)

OSTI Identifier:: 871956

Patent Number(s):: 5832089

Assignee:: Sandia Corporation (Albuquerque, NM)

Patent Classifications (CPCs):: G - PHYSICS G06 - COMPUTING G06Q - DATA PROCESSING SYSTEMS OR METHODS, SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORY OR FORECASTING PURPOSES

Show more

G - PHYSICS G06 - COMPUTING G06Q - DATA PROCESSING SYSTEMS OR METHODS, SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORY OR FORECASTING PURPOSES
G06Q20/02 - involving a neutral party, e.g. certification authority, notary or trusted third party [TTP]
G06Q20/06 - Private payment circuits, e.g. involving electronic currency used among participants of a common payment scheme
G06Q20/10 - specially adapted for electronic funds transfer [EFT] systems
G06Q20/3678 - {e-cash details, e.g. blinded, divisible or detecting double spending}
G06Q20/383 - {Anonymous user system}

Show less

DOE Contract Number:: AC04-94AL85000

Resource Type:: Patent

Country of Publication:: United States

Language:: English

Subject:: off-line; compatible; electronic; cash; method; coin; bank; payee; user; account; password; z; performing; transfer; withdrawn; record; stored; paid; deposits; determination; spent; deleted; deposit; determined; additionally; originally; withdrew; deleting; perform; operations; key; pair; generated; including; public; secret; signature; keys; withdrawal; amount; response; sends; signed; bankindicating; value; transmits; challenge; counter; prior; receiving; electronic cash; /705/380/

Citation Formats


                    Kravitz, David W, Gemmell, Peter S, and Brickell, Ernest F. Off-line compatible electronic cash method and system.  United States: N. p., 1998. 
        Web.

Copy to clipboard


                    Kravitz, David W, Gemmell, Peter S, & Brickell, Ernest F. Off-line compatible electronic cash method and system.  United States.

Copy to clipboard


                    Kravitz, David W, Gemmell, Peter S, and Brickell, Ernest F. Thu .  
        "Off-line compatible electronic cash method and system".  United States.  https://www.osti.gov/servlets/purl/871956.

Copy to clipboard


                    
@article{osti_871956,

  title        = {Off-line compatible electronic cash method and system},

  author       = {Kravitz, David W and Gemmell, Peter S and Brickell, Ernest F},

  abstractNote = {An off-line electronic cash system having an electronic coin, a bank B, a payee S, and a user U with an account at the bank B as well as a user password z.sub.u,i, has a method for performing an electronic cash transfer. An electronic coin is withdrawn from the bank B by the user U and an electronic record of the electronic coin is stored by the bank B. The coin is paid to the payee S by the user U. The payee S deposits the coin with the bank B. A determination is made that the coin is spent and the record of the coin is deleted by the bank B. A further deposit of the same coin after the record is deleted is determined. Additionally, a determination is made which user U originally withdrew the coin after deleting the record. To perform these operations a key pair is generated by the user, including public and secret signature keys. The public signature key along with a user password z.sub.u,i and a withdrawal amount are sent to the bank B by the user U. In response, the bank B sends a coin to the user U signed by the secret key of the bankindicating the value of the coin and the public key of the user U. The payee S transmits a challenge counter to the user U prior to receiving the coin.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {1998},

  month        = {1}

}

Copy to clipboard

Patent:

Save / Share:

Export Metadata

Save to My Library

Works referenced in this record:

Blind Signatures for Untraceable Payments
book, January 1983

Chaum, David
Advances in Cryptology
https://doi.org/10.1007/978-1-4757-0602-4_18

An efficient electronic payment system protecting privacy
book, January 1994

Camenisch, Jan L.; Piveteau, Jean-Marc; Stadler, Markus A.
Computer Security — ESORICS 94
https://doi.org/10.1007/3-540-58618-0_65

NetCash: a design for practical electronic currency on the Internet
conference, January 1993

Medvinsky, Gennady; Neuman, Clifford
Proceedings of the 1st ACM conference on Computer and communications security - CCS '93
https://doi.org/10.1145/168588.168601

Untraceable Electronic Cash
book, January 1990

Chaum, David; Fiat, Amos; Naor, Moni
Advances in Cryptology — CRYPTO’ 88
https://doi.org/10.1007/0-387-34799-2_25

Similar Records in DOE Patents and OSTI.GOV collections:

Off-line compatible electronic cash method and system

Patent Kravitz, D W; Gemmell, P S; Brickell, E F

An off-line electronic cash system having an electronic coin, a bank B, a payee S, and a user U with an account at the bank B as well as a user password z{sub u,i}, has a method for performing an electronic cash transfer. An electronic coin is withdrawn from the bank B by the user U and an electronic record of the electronic coin is stored by the bank B. The coin is paid to the payee S by the user U. The payee S deposits the coin with the bank B. A determination is made that the coin ismore » « less
Stand-off transmission lines and method for making same

Patent Tuckerman, David B [Livermore, CA]

Standoff transmission lines in an integrated circuit structure are formed by etching away or removing the portion of the dielectric layer separating the microstrip metal lines and the ground plane from the regions that are not under the lines. The microstrip lines can be fabricated by a subtractive process of etching a metal layer, an additive process of direct laser writing fine lines followed by plating up the lines or a subtractive/additive process in which a trench is etched over a nucleation layer and the wire is electrolytically deposited. Microstrip lines supported on freestanding posts of dielectric material surrounded bymore » « less
Full Text Available
Off-line-locked laser diode species monitor system

Patent Lee, Jamine; Goldstein, Neil; Richtsmeier, Steven; ...

An off-line-locked laser diode species monitor system includes: reference means for including at least one known species having a first absorption wavelength; a laser source for irradiating the reference means and at least one sample species having a second absorption wavelength differing from the first absorption wavelength by a predetermined amount; means for locking the wavelength of the laser source to the first wavelength of the at least one known species in the reference means; a controller for defeating the means for locking and for displacing the laser source wavelength from said first absorption wavelength by said predetermined amount tomore » « less
Full Text Available
System and method for x-ray compatible 2D streak camera for a snapshot multiframe imager

Patent Dayton, Matthew S.; Field, John E.

The present disclosure is directed to a snapshot multiframe imager having an aperture element having at least one aperture, an adjacently positioned random mask, an imaging element and a computer. The random mask has a plurality of micron scale apertures and receives light passing through the aperture element, which represents the spatial information from the scene being imaged, and generates a plurality of image frames encoded in a spatial domain. The imaging element may operate in a drift-scan mode receives the encoded image frames and generates a streaked pattern of electrons representing a plurality of images of the scene atmore » « less
Full Text Available
Methods and systems for coordinating predictive cruise control, engine-off coasting, and hybrid power split

Patent Gupta, Rohinish; Dickson, Jonathan A.; Follen, Kenneth M.; ...

The enclosed disclosure relates to hybrid vehicles and systems with an engine, a drivetrain with a clutch and a transmission, an electric machine, and a controller. The controller receives lookahead information within a lookahead window and present state information of the hybrid vehicle. The controller determines a predicted coasting opportunity exceeding a predetermined threshold within the lookahead window and determines a cruise control reference speed, a power split between the engine and the electric machine, and a timing of enabling engine-off coasting during the coasting opportunity. The controller deactivates the engine and disengages the clutch at a start of themore » « less
Full Text Available

Similar Records

Title: Off-line compatible electronic cash method and system

Abstract

Citation Formats

Blind Signatures for Untraceable Payments book, January 1983

An efficient electronic payment system protecting privacy book, January 1994

NetCash: a design for practical electronic currency on the Internet conference, January 1993

Untraceable Electronic Cash book, January 1990

Blind Signatures for Untraceable Payments
book, January 1983

An efficient electronic payment system protecting privacy
book, January 1994

NetCash: a design for practical electronic currency on the Internet
conference, January 1993

Untraceable Electronic Cash
book, January 1990