Patent ID: 11968291
Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 21:
22. A method for controlling access to data being broadcast over a telecommunication medium, wherein the method comprises:
submitting, by a first access device of a plurality of access devices, a first access request for accessing the data by the first access device to a plurality of validator devices,
receiving, by the first access device, cryptographic information sent by a provider system in response to a blockchain being updated by a plurality of validator devices, the blockchain comprising a sequence of blocks linked to each other according to corresponding hashes, by adding a new one of the blocks comprising an indication of the first access request in response to a first consensus of at least some of the validator devices to a positive result of said validating the first access request,
receiving, by the first access device, the encrypted data being broadcast by the provider system, and
decrypting, by the first access device, the encrypted data into the data according to the cryptographic information in combination with a local key from a drive of the first access device.