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:
Mar. 17, 2020
Filed:
Aug. 15, 2017
Trustonic Limited, Cambridge, GB;
Chris Loreskar, Haverdal, SE;
John Dent, Cambridge, GB;
Trustonic Limited, Cambridge, GB;
Abstract
A method of configuring a target domain providing a cryptographic identity for authenticating commands to be executed by an electronic device comprises receiving a domain configuration command, and authenticating the command based on a cryptographic identity provided by an authenticating domain which is an ancestor of the target domain in a hierarchical chain of trust. When authenticated, at least one target domain constraint specified by the command is combined with at least one future constraint specified by the authenticating domain to generate a combined constraint set to be satisfied by commands to be authenticated by the target domain. The combined constraint set is stored for the target domain. This approach provides a balance between security and scalability of the chain of trust.