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.

Date of Patent:
Jan. 09, 2024

Filed:

Oct. 11, 2018
Applicant:

Nec Corporation, Tokyo, JP;

Inventors:

Hikaru Tsuchida, Tokyo, JP;

Toshinori Araki, Tokyo, JP;

Kazuma Ohara, Tokyo, JP;

Assignee:

NEC CORPORATION, Tokyo, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04L 29/06 (2006.01); H04L 9/08 (2006.01); G06F 7/72 (2006.01);
U.S. Cl.
CPC ...
H04L 9/085 (2013.01); G06F 7/727 (2013.01);
Abstract

When an absolute value of a difference value between a first share and a second share which are secret-shared is less than or equal to a natural number t, the information processing apparatus calculates the difference value between the first share and the second share. Furthermore, the information processing apparatus performs a comparison in magnitude of the first share and the second share using bit-decomposition from a least significant bit to an m-th bit (m being a natural number) of the difference value.


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