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:
Jan. 27, 2026
Filed:
Aug. 07, 2023
Nxp B.v., Eindhoven, NL;
Joost Roland Renes, 's-Hertogenbosch, NL;
Tobias Schneider, Graz, AT;
Melissa Azouaoui, Norderstedt, DE;
Mohamed Elghamrawy, Hamburg, DE;
NXP B.V., Eindhoven, NL;
Abstract
A method of performing a Dilithium signature operation on a message M using a secret key sk, including: calculating a value {tilde over (r)} based upon w, c, and s, where wand c are calculated as part of the Dilithium signature operation and sis part of the secret key sk; performing a bound check on {tilde over (r)} based upon γand β, where γand β are parameters of the Dilithium signature operation; calculating a hint h based on the value {tilde over (r)} and deleting the value {tilde over (r)} in a memory; regenerating a value y using an ExpandMask function; calculating z based upon y, c, and s, where sis part of the secret key sk and replacing y with z in the memory; performing a bound check on z based on γand β, where γis a parameter of the Dilithium signature operation; and returning a digital signature of the message M where the digital signature includes z and h.