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. 31, 2010
Filed:
Nov. 30, 2006
Applicants:
Koichiro Akiyama, Tokyo, JP;
Yasuhiro Goto, Hakodate, JP;
Inventors:
Koichiro Akiyama, Tokyo, JP;
Yasuhiro Goto, Hakodate, JP;
Assignee:
Kabushiki Kaisha Toshiba, Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04L 9/22 (2006.01);
U.S. Cl.
CPC ...
Abstract
A key generating apparatus generates a fibration X(x, y, t)=0 of an algebraic surface X serving as a part of a public key and defined on a finite field F(where q=p[p is a prime number and r is an extended degree]) and a private key which is two sections Dand Dcorresponding to the fibration X(x, y, t)=0. The fibration X(x, y, t) is generated such that a term (c(t)xy) of xyhaving a 1-variable polynomial c(t) of t as a coefficient is included in the fibration X(x, y, t).