The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 11, 2020
Filed:
Apr. 26, 2018
Jonathan Sean Callan, Cambridge, GB;
Keir Finlow-bates, Kangasala, FI;
Jonathan Sean Callan, Cambridge, GB;
Keir Finlow-Bates, Kangasala, FI;
Other;
Abstract
A data management blockchain and protocol for controlling access to data, in which no central trusted authority is required, is presented. The data management blockchain and protocol comprises an initial announcement of public keys by a plurality of blockchain participants, through which each blockchain participant establishes an identity. Subsequently a first of the plurality of blockchain participants publishes data encrypted with a cryptographic key on the blockchain. A second of the plurality of blockchain participants is assigned as an owner of the data by an authority. Access to the data is granted or revoked to further participants by the second of the plurality of blockchain participants through signed permission messages published on the blockchain, and a corresponding hand-over of the cryptographic key by the first of the plurality of blockchain participants, allowing access to the data. Access to further data may be revoked by changing the cryptographic key used.