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:
Dec. 03, 2024
Filed:
Nov. 28, 2019
Applicant:
Nec Corporation, Tokyo, JP;
Inventor:
Hikaru Tsuchida, Tokyo, JP;
Assignee:
NEC CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04L 9/08 (2006.01);
U.S. Cl.
CPC ...
H04L 9/085 (2013.01);
Abstract
Among four secure computation nodes holding first to third shares of data in a secret-shared form, first and second secure computation nodes are selected as resharing nodes, and third and fourth secure computation nodes are selected as receiving nodes. The first and second secure computation nodes perform a mini-shuffle for resharing the shares they each hold by using a permutation that third and fourth receiving nodes do not know. Next, the third and fourth secure computation nodes perform a mini-shuffle for resharing the shares they each hold by using a permutation that first and second receiving nodes do not know.