Method and system for accessing anonymized data
AssigneeCommissariat A L'energie Atomique Et Aux Energies Alternatives
InventorChristine HENNEBERT
Life of this patent
Estimating the term…
Abstract
A method for anonymized storage of personal data and a method for managing access to the data. The anonymization of data is achieved by making independent, thanks to the use of a blockchain, the identifiers of the data sources and the users on the one hand, and the personal data on the other hand. The personal data are stored at addresses indexed by their hashed values in a first database and the identifiers are stored with their corresponding access profiles in a second database. The link between these two independent databases is ensured by cryptographic elements recorded in the ledger of the blockchain
Claims10
A method for anonymized storage of personal data, said personal data belonging to an owner of data and being supplied by a data generating device, said personal data being intended to be stored in a first database hosted by a data server, the data generating device being connected to the data server with a first secure channel, the data generating device and the data server being interfaced with a blockchain, wherein:
- the data generator generates fingerprints of said data with a hash function and records said fingerprints in the blockchain by calling a first smart contract deployed in said chain, said fingerprints being recorded in the blockchain in relation with access parameters;
- the data generator transmits said fingerprints and associated data to the data server via the first secure channel;
- the data server consults the blockchain to read therein the recorded fingerprints, a datum being stored in the first database at an address indexed by its fingerprint if this fingerprint is recorded in the blockchain, and not being stored in the first database if this fingerprint is not recorded in the blockchain.
Dependencies are inferred from the claim text.