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:
Jun. 25, 2024
Filed:
Jun. 03, 2022
Nxp B.v., Eindhoven, NL;
NXP B.V., Eindhoven, NL;
Abstract
Various implementations relate to a data processing system comprising instructions embodied in a non-transitory computer readable medium, the instructions for a cryptographic operation including a masked decomposition of a polynomial a having narithmetic shares into a high part aand a low part afor lattice-based cryptography in a processor, the instructions, including: performing a rounded Euclidian division of the polynomial a by a base α to compute t; extracting Boolean shares afrom n low bits of t by performing an arithmetic share to Boolean share (A2B) conversion on tand performing an AND with ζ−1, where ζ=−αis a power of 2; unmasking aby combining Boolean shares of a; calculating arithmetic shares aof the low part a; and performing a cryptographic function using aand a.