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1. WO2020112525 - ACCOUNTABLY REDACTABLE DATA STRUCTURE

Publication Number WO/2020/112525
Publication Date 04.06.2020
International Application No. PCT/US2019/062749
International Filing Date 22.11.2019
IPC
G06Q 20/00 2012.01
GPHYSICS
06COMPUTING; CALCULATING OR 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
CPC
G06F 16/2365
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
FELECTRIC DIGITAL DATA PROCESSING
16Information retrieval; Database structures therefor; File system structures therefor
20of structured data, e.g. relational data
23Updating
2365Ensuring data consistency and integrity
G06F 16/901
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
FELECTRIC DIGITAL DATA PROCESSING
16Information retrieval; Database structures therefor; File system structures therefor
90Details of database functions independent of the retrieved data types
901Indexing; Data structures therefor; Storage structures
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
H04L 9/0637
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
9Cryptographic mechanisms or cryptographic; arrangements for secret or secure communication
06the encryption apparatus using shift registers or memories for block-wise ; or stream; coding, e.g. DES systems ; or RC4; Hash functions; Pseudorandom sequence generators
0618Block ciphers, i.e. encrypting groups of characters of a plain text message using fixed encryption transformation
0637Modes of operation, e.g. cipher block chaining [CBC], electronic codebook [ECB] or Galois/counter mode [GCM]
H04L 9/0643
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
9Cryptographic mechanisms or cryptographic; arrangements for secret or secure communication
06the encryption apparatus using shift registers or memories for block-wise ; or stream; coding, e.g. DES systems ; or RC4; Hash functions; Pseudorandom sequence generators
0643Hash functions, e.g. MD5, SHA, HMAC or f9 MAC
H04L 9/3218
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
9Cryptographic mechanisms or cryptographic; arrangements for secret or secure communication
32including 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
3218using proof of knowledge, e.g. Fiat-Shamir, GQ, Schnorr, ornon-interactive zero-knowledge proofs
Applicants
  • PRATKANIS, Anthony, Turner [US]/[US]
Inventors
  • PRATKANIS, Anthony, Turner
Agents
  • CASTELLUCCI, Victor
Priority Data
16/203,79329.11.2018US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) ACCOUNTABLY REDACTABLE DATA STRUCTURE
(FR) STRUCTURE DE DONNÉES RÉDIGEABLES DE FAÇON RESPONSABLE
Abstract
(EN)
A system and method of accountably redacting selected data from a blockchain, distributed ledger, or other Merkle-Linked (or partial Merkle-Linked) data structure are disclosed. In accordance with some implementations, such a system and method may generally comprise or enable redacting selected elements from a data element and using a proof to show that the redaction was performed correctly; in this manner, it may not be necessary to retain the original version of redacted data element, since the redacted version and the proof are enough to maintain system integrity.
(FR)
L'invention concerne un système et un procédé permettant de rédiger des données sélectionnées de façon responsable à partir d'une chaîne de blocs, d'un registre distribué ou d'une autre structure de données liée à Merkle (ou liée partiellement à Merkle). Selon certains modes de réalisation, un tel système et un tel procédé peuvent généralement comprendre ou permettre la rédaction d’éléments sélectionnés à partir d'un élément de données ainsi que l’utilisation d’une preuve pour montrer que la rédaction a été correctement effectuée. De cette manière, il n'est pas forcément nécessaire de conserver la version originale de l'élément de données rédigé étant donné que la version rédigée et la preuve sont suffisantes pour maintenir l'intégrité du système.
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