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1. WO2022069042 - DATA STORAGE ARRANGEMENT AND METHOD FOR ANONYMIZATION AWARE DEDUPLICATION

Publication Number WO/2022/069042
Publication Date 07.04.2022
International Application No. PCT/EP2020/077446
International Filing Date 01.10.2020
IPC
G06F 21/62 2013.1
GPHYSICS
06COMPUTING; CALCULATING OR 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
G06F 16/174 2019.1
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
FELECTRIC DIGITAL DATA PROCESSING
16Information retrieval; Database structures therefor; File system structures therefor
10File systems; File servers
17Details of further file system functions
174Redundancy elimination performed by the file system
H03M 7/30 2006.1
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
MCODING, DECODING OR CODE CONVERSION, IN GENERAL
7Conversion of a code where information is represented by a given sequence or number of digits to a code where the same information is represented by a different sequence or number of digits
30Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
CPC
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 21/6254
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
6254by anonymising data, e.g. decorrelating personal data from the owner's identification
H03M 7/3066
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
MCODING; DECODING; CODE CONVERSION IN GENERAL
7Conversion of a code where information is represented by a given sequence or number of digits to a code where the same ; , similar or subset of; information is represented by a different sequence or number of digits
30Compression
3066by means of a mask or a bit-map
H03M 7/3093
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
MCODING; DECODING; CODE CONVERSION IN GENERAL
7Conversion of a code where information is represented by a given sequence or number of digits to a code where the same ; , similar or subset of; information is represented by a different sequence or number of digits
30Compression
3084using adaptive string matching, e.g. the Lempel-Ziv method
3091Data deduplication
3093using fixed length segments
Applicants
  • HUAWEI TECHNOLOGIES CO., LTD. [CN]/[CN]
  • NATANZON, Assaf [IL]/[DE] (US)
Inventors
  • NATANZON, Assaf
  • AKIRAV, Shay
Agents
  • KREUZ, Georg
Priority Data
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) DATA STORAGE ARRANGEMENT AND METHOD FOR ANONYMIZATION AWARE DEDUPLICATION
(FR) AGENCEMENT DE STOCKAGE DE DONNÉES ET PROCÉDÉ DE DÉDUPLICATION SENSIBLE À L'ANONYMISATION
Abstract
(EN) A data storage arrangement includes memory and controller. Memory is configured to store one or more data elements. Controller is configured to store at least one of one or more data elements utilizing differential compression. Controller is further configured to receive data element to be stored, generate copy of the data element to be stored and mask data to be anonymized in copy of data element to be stored by exchanging one or more portions to be anonymized with predefined content. Controller is further configured to generate corresponding hashes for one or more portions of copy of data element with masked data for finding one or more reference portions and compress data element to be stored utilizing differential compression with reference to one or more reference portions. Controller hints storage on areas of data element which may be modified during data anonymization which enables in anonymization aware deduplication.
(FR) Agencement de stockage de données comprenant une mémoire et un contrôleur. La mémoire est configurée pour stocker un ou plusieurs éléments de données. Le contrôleur est configuré pour stocker au moins un élément de données parmi un ou plusieurs éléments de données à l'aide d'une compression différentielle. Le contrôleur est en outre configuré pour recevoir un élément de données à stocker, générer une copie de l'élément de données à stocker et masquer les données à anonymiser dans la copie d'un élément de données à stocker en échangeant une ou plusieurs parties à anonymiser avec un contenu prédéfini. Le contrôleur est en outre configuré pour générer des hachages correspondants pour une ou plusieurs parties de copie de l'élément de données avec des données masquées pour trouver une ou plusieurs parties de référence et compresser l'élément de données à stocker en utilisant une compression différentielle en référence à une ou plusieurs parties de référence. Le contrôleur suggère un stockage sur des zones de l'élément de données qui peuvent être modifiées pendant l'anonymisation de données, ce qui permet une déduplication sensible à l'anonymisation.
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