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:
Nov. 18, 2025
Filed:
Nov. 06, 2023
Nxp B.v., Eindhoven, NL;
Nikita Veshchikov, Brussels, BE;
NXP B.V., Eindhoven, NL;
Abstract
Software programs and firmware of an embedded device can be protected against lifting, copying, disassembly, and malware attacks by obfuscating the standard binary encodings of instructions in an instruction set that is understood by the processor(s) of the embedded device. The obfuscation is performed by using a key stored in the embedded device to generate a set of substitute binary encodings for the instructions based on one of a plurality of possible permutations of the standard binary encodings; a binary executable compiled from the software program code is re-encoded using the substitute encodings to produce a substitute 'permuted' executable that is stored in memory of the embedded device. A permutation decoding unit in the embedded device obtains the permuted executable from memory, decodes each instruction back into its standard binary encoding using the key, and delivers the standard-encoded instruction to the embedded device's decoder circuit for execution.