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:
Aug. 12, 2025
Filed:
Sep. 06, 2023
Nxp B.v., Eindhoven, NL;
Melissa Azouaoui, Norderstedt, DE;
Mohamed Elghamrawy, Hamburg, DE;
Joost Roland Renes, 's-Hertogenbosch, NL;
Tobias Schneider, Graz, AT;
NXP B.V., Eindhoven, NL;
Abstract
A method of performing a Dilithium signature operation on a message M using a secret key sk, including: generating a polynomial y using an ExpandMask function; calculating a polynomial z based upon y, c, and s; performing a bound check on z based upon γand β; performing a bound check on ctbased upon γ; calculating a polynomial {tilde over (r)} based upon A, z, c, t, α, and w; performing a bound check on {tilde over (r)} based upon γand β; calculating a hint polynomial h based on the {tilde over (r)}; and returning a digital signature of the message M where the digital signature includes z and h.