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:
Mar. 14, 2024
Nxp B.v., Eindhoven, NL;
Marcel Medwed, Graz, AT;
Jan Hoogerbrugge, Helmond, NL;
NXP B.V., Eindhoven, NL;
Abstract
A data processing system is provided that includes a memory, a processor, and a memory integrity circuit. The memory includes a plurality of memory regions configured to store information. The processor is configured to execute instructions to access an address in the memory. The memory integrity circuit is coupled to the processor and to the memory, and configured to validate read and write accesses to the memory by the processor. The memory integrity circuit validates a write access to an address of a memory region of the plurality of memory regions in response to n number of the read accesses being validated prior to the write access, where n is an integer, and in response to correctly calculating a message authentication code (MAC) of a combination of encrypted data stored at the address and a tweak value. In another embodiment, a method is provided for isolation security for the memory.