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:
Sep. 08, 2026
Filed:
Jun. 28, 2023
Nxp B.v., Eindhoven, NL;
Fabrice Poulard, Houilles, FR;
Sören Heisrath, Horneburg, DE;
Timotheus Arthur Van Roermund, Hamburg, DE;
NXP B.V., Eindhoven, NL;
Abstract
A circuit includes a secure chip storing one of an enclave of key values linked to an update code; a memory to store an updatable data set including an update value, which corresponds to and is revised with the update code; and a logic circuit. The logic circuit is configured to provide a key value based on a revision to the update code from the enclave of key values, generate an authentication tag as a function of the key value, use the authentication tag to verify that the updatable data set is valid and current before using the updatable data set in an application, and update the data set by storing a replacement updatable data set including a revised update value in the memory circuit. The revised update value corresponds to a revised update code to provide another key value from the enclave of key values.