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:
May. 11, 2021
Filed:
Jun. 13, 2019
Beijing Smartchip Microelectronics Technology Company Limited, Beijing, CN;
State Grid Information & Telecommunication Group Co., Ltd, Beijing, CN;
State Grid Corporation of China, Beijing, CN;
Dongyan Zhao, Beijing, CN;
Xiaoke Tang, Beijing, CN;
Yanyan Yu, Beijing, CN;
Xiaobo Hu, Beijing, CN;
Shiping Zang, Beijing, CN;
Jie Gan, Beijing, CN;
Liang Liu, Beijing, CN;
Zhe Zhang, Beijing, CN;
Yinzi Tu, Beijing, CN;
BEIJING SMARTCHiP MICROELECTRONICS TECHNOLOGY COMP, Beijing, CN;
Abstract
Disclosed are an elliptic curve point multiplication operation method and apparatus. The elliptic curve point multiplication operation method comprises ordered point multiplication and point addition operations. In a point addition operation process, when scanning that a current bit of a scalar K is not 0, a true point addition operation is executed, and when scanning that the current bit of the scalar K is 0, an equivalent point conversion operation is executed; the result of the true point addition operation and the result of the equivalent point conversion operation are stored in an identical register file, the register file comprising multiple registers. According to the elliptic curve point multiplication operation method and apparatus, side channel analysis and security error attack can be effectively resisted.