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1. WO2020098834 - BLOCKCHAIN-BASED TRUSTABLE GUARANTEES

Publication Number WO/2020/098834
Publication Date 22.05.2020
International Application No. PCT/CN2020/074244
International Filing Date 03.02.2020
IPC
G06F 21/60 2013.01
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
FELECTRIC DIGITAL DATA PROCESSING
21Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
60Protecting data
G06F 16/23 2019.01
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
FELECTRIC DIGITAL DATA PROCESSING
16Information retrieval; Database structures therefor; File system structures therefor
20of structured data, e.g. relational data
23Updating
H04L 9/00 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
9Arrangements for secret or secure communication
CPC
G06F 21/53
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
FELECTRIC DIGITAL DATA PROCESSING
21Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
50Monitoring users, programs or devices to maintain the integrity of platforms, e.g. of processors, firmware or operating systems
52during program execution, e.g. stack integrity ; ; Preventing unwanted data erasure; Buffer overflow
53by executing in a restricted environment, e.g. sandbox or secure virtual machine
G06F 21/6245
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
FELECTRIC DIGITAL DATA PROCESSING
21Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
60Protecting data
62Protecting access to data via a platform, e.g. using keys or access control rules
6218to a system of files or objects, e.g. local or distributed file system or database
6245Protecting personal data, e.g. for financial or medical purposes
G06F 21/64
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
FELECTRIC DIGITAL DATA PROCESSING
21Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
60Protecting data
64Protecting data integrity, e.g. using checksums, certificates or signatures
G06Q 20/12
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
QDATA PROCESSING SYSTEMS OR METHODS, SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORY OR FORECASTING PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORY OR FORECASTING PURPOSES, NOT OTHERWISE PROVIDED FOR
20Payment architectures, schemes or protocols
08Payment architectures
12specially adapted for electronic shopping systems
G06Q 20/3825
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
QDATA PROCESSING SYSTEMS OR METHODS, SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORY OR FORECASTING PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORY OR FORECASTING PURPOSES, NOT OTHERWISE PROVIDED FOR
20Payment architectures, schemes or protocols
38Payment protocols; Details thereof
382insuring higher security of transaction
3825Use of electronic signatures
G06Q 20/3827
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
QDATA PROCESSING SYSTEMS OR METHODS, SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORY OR FORECASTING PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORY OR FORECASTING PURPOSES, NOT OTHERWISE PROVIDED FOR
20Payment architectures, schemes or protocols
38Payment protocols; Details thereof
382insuring higher security of transaction
3827Use of message hashing
Applicants
  • ALIPAY (HANGZHOU) INFORMATION TECHNOLOGY CO., LTD. [CN]/[CN]
Inventors
  • LU, Xuming
  • ZHOU, Hui
  • YE, Guojun
Agents
  • BEIJING BESTIPR INTELLECTUAL PROPERTY LAW CORPORATION
Priority Data
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) BLOCKCHAIN-BASED TRUSTABLE GUARANTEES
(FR) CAUTIONNEMENTS DE CONFIANCE À BASE DE CHAÎNE DE BLOCS
Abstract
(EN)
Disclosed herein are methods, systems, and apparatus, including computer programs encoded on computer storage media, for processing blockchain-based guarantee information. One of the methods includes receiving a cyphertext of a digital document specifying a guarantee and one or more zero-knowledge proofs (ZKPs) related to one or more values associated with the guarantee; verifying the one or more ZKPs; upon successfully verifying the one or more ZKPs, storing the cyphertext to a blockchain based on performing a consensus algorithm; receiving a drawdown request of the guarantee from a first computing device associated with the beneficiary or a representative of the beneficiary; storing the drawdown request to the blockchain based on performing a consensus algorithm; and delivering a first message about the drawdown request to a second computing device.
(FR)
L'invention concerne des procédés, des systèmes et un appareil, comprenant des programmes informatiques codés sur des supports d'informations informatiques, permettant de traiter des informations de cautionnement basées sur une chaîne de blocs. L'un des procédés consiste à recevoir un cryptogramme d'un document numérique spécifiant un cautionnement et une ou plusieurs preuves à connaissance nulle (ZKP) relatives à une ou plusieurs valeurs associées au cautionnement; à vérifier la ou les ZKP; à vérifier avec succès la ou les ZKP, à mémoriser le cryptogramme dans une chaîne de blocs sur la base de la réalisation d'un algorithme de consensus; à recevoir une demande de soutirage du cautionnement en provenance d'un premier dispositif informatique associé au bénéficiaire ou à un représentant du bénéficiaire; à mémoriser la demande de soutirage sur la chaîne de blocs sur la base de la réalisation d'un algorithme de consensus; et à distribuer un premier message concernant la demande de soutirage sur un second dispositif informatique.
Also published as
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