US 11,968,291 B2
Access to data broadcast in encrypted form based on blockchain
Davide Fazzone, Baiano (IT); Luigi Lombardi, Naples (IT); Vinicio Bombacino, Rome (IT); and Andrea Tortosa, Rome (IT)
Assigned to International Business Machines Corporation, Armonk, NY (US)
Filed by INTERNATIONAL BUSINESS MACHINES CORPORATION, Armonk, NY (US)
Filed on Apr. 20, 2023, as Appl. No. 18/303,901.
Application 18/303,901 is a continuation of application No. 17/500,414, filed on Oct. 13, 2021, granted, now 11,683,154.
Application 17/500,414 is a continuation of application No. 16/127,364, filed on Sep. 11, 2018, granted, now 11,153,070, issued on Oct. 19, 2021.
Prior Publication US 2023/0254117 A1, Aug. 10, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H04L 9/40 (2022.01); H04L 9/06 (2006.01); H04W 12/06 (2021.01)
CPC H04L 9/0637 (2013.01) [H04L 9/0643 (2013.01); H04L 63/0428 (2013.01); H04L 63/0876 (2013.01); H04W 12/06 (2013.01)] 25 Claims
OG exemplary drawing
 
1. A method for controlling access to data being broadcast over a telecommunication medium, wherein the method comprises:
transmitting, by the provider system, cryptographic information 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,
encrypting, by the provider system, the data into encrypted data according to the cryptographic information, wherein the encrypted data can be decrypted by a first access device using the cryptographic information and a local key from a drive of the first access device, and
broadcasting, by the provider system, the encrypted data.