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:
Jul. 01, 2025
Filed:
Apr. 19, 2021
Nippon Telegraph and Telephone Corporation, Tokyo, JP;
Atsunori Ichikawa, Tokyo, JP;
Koki Hamada, Tokyo, JP;
NIPPON TELEGRAPH AND TELEPHONE CORPORATION, Tokyo, JP;
Abstract
A secure computation system includes first, second, and third secure-computation-apparatuses each having a tripartite-share of a concealed input vector. The first secure-computation-apparatus converts its tripartite-share into a bipartite-share with the third secure-computation-apparatus; calculates a third vector obtained by subtracting a second permutation of a first vector and a second vector from its permutation of its bipartite-share; and transmits the third vector and the second permutation to the second secure-computation-apparatus. The third secure-computation-apparatus converts its tripartite-share into a bipartite-share with the first secure-computation-apparatus; calculates a fourth vector obtained by adding the first vector to a first permutation of its bipartite-share; transmits the fourth vector to the third secure-computation-apparatus: set the second vector as a bipartite-share with the second secure-computation-apparatus. The second secure-computation-apparatus sets a vector obtained by adding the second permutation of the fourth vector to the third vector, as a bipartite-share with the third secure-computation-apparatus.