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:
Sep. 22, 2026
Filed:
Jan. 20, 2020
Applicant:
Ntt, Inc., Tokyo, JP;
Inventor:
Dai Ikarashi, Musashino, JP;
Assignee:
NTT, Inc., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04L 9/30 (2006.01);
U.S. Cl.
CPC ...
H04L 9/3006 (2013.01);
Abstract
Normalization is performed with high precision in secure computation. A secure inverse computation system () receives [a] as an input and calculates [1/a]. The bit decomposition unit () generates a bit representation a, . . . , aof a. The flag sequence generation unit () generates {x}, . . . , {x} indicating a most significant bit of {a}, . . . , {a}. A bit sequence generation unit () generates {y}, . . . , {y} in which {y}, {y}: ={0}, {y}: ={(¬a∧x) XOR x} (2≤i<λ), {y}: ={¬a∧x}. The normalization multiplier generation unit () generates [c] obtained by bit-connecting {y}, . . . , {y}. The normalization unit () calculates [b]: =[a][c].