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1. WO2019046317 - KEY DATA PROCESSING METHOD AND APPARATUS, AND SERVER

Publication Number WO/2019/046317
Publication Date 07.03.2019
International Application No. PCT/US2018/048370
International Filing Date 28.08.2018
Chapter 2 Demand Filed 26.06.2019
IPC
H04L 9/08 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
9Arrangements for secret or secure communication
08Key distribution
CPC
G06F 9/30029
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
FELECTRIC DIGITAL DATA PROCESSING
9Arrangements for program control, e.g. control units
06using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
30Arrangements for executing machine instructions, e.g. instruction decode
30003Arrangements for executing specific machine instructions
30007to perform operations on data operands
30029Logical and Boolean instructions, e.g. XOR, NOT
G06Q 20/367
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
30characterised by the use of specific devices ; or networks
36using electronic wallets or electronic money safes
367involving electronic purses or money safes
G06Q 20/3829
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
3829involving key management
G06Q 20/401
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
40Authorisation, e.g. identification of payer or payee, verification of customer or shop credentials; Review and approval of payers, e.g. check credit lines or negative lists
401Transaction verification
H04L 2209/24
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
2209Additional information or applications relating to cryptographic mechanisms or cryptographic arrangements for secret or secure communication H04L9/00
24Key scheduling, i.e. generating round keys or sub-keys for block encryption
H04L 2209/38
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
2209Additional information or applications relating to cryptographic mechanisms or cryptographic arrangements for secret or secure communication H04L9/00
38Chaining, e.g. hash chain or certificate chain
Applicants
  • ALIBABA GROUP HOLDING LIMITED
Inventors
  • WU, Hao
Agents
  • STALFORD, Terry J.
  • MATTSON, Matthew
  • CONROY, John
Priority Data
201710747807.528.08.2017CN
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) KEY DATA PROCESSING METHOD AND APPARATUS, AND SERVER
(FR) PROCÉDÉ ET APPAREIL DE TRAITEMENT DE DONNÉES DE CLÉ, ET CLIENT
Abstract
(EN)
An original key of a shared object in a blockchain is obtained. The number of parties sharing the original key is determined. The original key are processed by using a predetermined algorithm, to generate the same number of child keys as that of the number of parties sharing the original key, where the child keys are used to restore the original key when the same number of child keys are obtained.
(FR)
L'invention se rapporte à l'obtention d'une clé originale d'un objet partagé dans une chaîne de blocs. Le nombre de parties qui partagent la clé originale est déterminé. La clé originale est traitée à l'aide d'un algorithme prédéterminé en vue de générer un nombre de clés filles égal au nombre de parties qui partagent la clé originale, les clés filles étant utilisées pour restaurer la clé originale lorsque le même nombre de clés filles est obtenu.
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