Patent ID: 11880486
Assignee: SONY GROUP CORPORATION
Field: Digital communication (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 19:
20. A method for authenticating an organisation requesting access to user data over a network, comprising:
receiving, via the network, encrypted user data from an information processing apparatus, the encrypted user data being generated by encrypting the user data;
generating a unique identifier to be associated with the encrypted user data and a decryption key used for decrypting the encrypted user data;
providing the encrypted user data and the unique identifier to a publicly available database for storage immutably therein or thereon, the publicly available database being configured to store the unique identifier and a chain of access permissions recording granted permissions to access the user data in a form of one or more transactions from one previously granted organisation to another;
storing the decryption key in association with the unique identifier;
receiving, via the network, a request to access the user data from a requesting organisation;
in response to the request, determining whether the requesting organisation is an approved organisation, and determining whether the chain of access permissions stored in the publicly available database is validated; and
in a case that the requesting organisation is the approved organisation and the chain of access permissions stored in the publicly available database is validated:
transmitting, via the network, the decryption key to the requesting organisation; and
wherein determining whether the chain of access permissions stored in the publicly available database is validated includes individually checking every transaction in the chain of access permissions; and
wherein the publicly available database is a block-chain.