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:
Oct. 14, 2025
Filed:
Sep. 05, 2023
Nuvoton Technology Corporation, Hsinchu Science Park, TW;
Kun-Yi Wu, Tainan, TW;
Yu-Shan Li, Tainan, TW;
NUVOTON TECHNOLOGY CORPORATION, Hsinchu Science Park, TW;
Abstract
A method for tamper protection in cryptographic calculations is provided. A cryptographic calculation includes a plurality of normal rounds and a plurality of redundant rounds. The method includes obtaining a first variable x and a second variable y using a random number generator; dividing the normal rounds into a first normal section and a second normal section, and dividing the redundant rounds into a first redundant section and a second redundant section according to the first variable x and the second variable y; executing the first normal section and the first redundant section in sequence using a clock signal; in response to completion of the first redundant section and a first calculation result of the first normal section and a second calculation result of the first redundant section being the same, executing the second normal section and the second redundant section in sequence to complete the cryptographic calculation.