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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.:

US 11595218 B1

PDFFull Text
Date of Patent:
Feb. 28, 2023

Filed:

Jun. 23, 2020

Authorization delegation

Applicant:

Arm Limited, Cambridge, GB;

Inventors:

Mathias Sven Lucien Alain Brossard, Austin, TX (US);

Brendan James Moran, Histon, GB;

Assignee:

Arm Limited, Cambridge, GB;

Attorney:

Nixon & Vanderhye P.C.

Primary Examiner:

Abiy Getachew

Int. Cl.
CPC ...
H04L 9/32 (2006.01); H04L 9/08 (2006.01); G06F 21/64 (2013.01); H04L 9/40 (2022.01); H04L 9/14 (2006.01); G06F 21/60 (2013.01); H04L 9/00 (2022.01);
U.S. Cl.
CPC ...
H04L 9/3265 (2013.01); G06F 21/602 (2013.01); G06F 21/64 (2013.01); H04L 9/0861 (2013.01); H04L 9/14 (2013.01); H04L 63/0428 (2013.01); H04L 9/50 (2022.05);
Abstract

Apparatuses, systems, methods, and software are disclosed for authorization delegation. In a participant device a derivative key is generated in dependence on a received key. An authenticity check value for a delegation information block is generated in dependence on the delegation information block and the received key. The derivative key is derived in dependence on the delegation information block and the received key. An extended certificate chain is created comprising a received certificate chain appended with a local certificate, which comprises the delegation information block and the authenticity check value.

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