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:
Nov. 03, 2015
Filed:
Dec. 27, 2010
Yusuke Naito, Tokyo, JP;
Yasuyuki Sakai, Tokyo, JP;
Yusuke Naito, Tokyo, JP;
Yasuyuki Sakai, Tokyo, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
A scalar multiplication unit references a t-bit sequence representing a random number k one bit at a time from the most significant bit, and upon each referencing, sets in a work variable R[0] a value obtained by doubling a specific point G on an elliptic curve set in a scalar multiplication variable R, and sets in a work variable R[1] a value obtained by adding the specific point G to the work variable R[0]. The scalar multiplication unitsets the work variable R[0] in the scalar multiplication variable R if the value of the referenced bit is 0, and sets the work variable R[1] in the scalar multiplication variable R if the value of the referenced bit is 1. A scalar multiple point output unitoutputs as a scalar multiple point kG a value obtained by subtracting a constant value 2tG from the scalar multiplication variable R.