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:
May. 09, 2023
Filed:
Jan. 17, 2018
Nippon Telegraph and Telephone Corporation, Chiyoda-ku, JP;
Dai Ikarashi, Musashino, JP;
Ryo Kikuchi, Musashino, JP;
NIPPON TELEGRAPH AND TELEPHONE CORPORATION, Chiyoda-ku, JP;
Abstract
A power is computed at high speed with a small number of communication rounds. A secret computation system that includes three or more secret computation apparatuses computes a share [a] of the ν-th power of data 'a' from a share [a] of data 'a' while data “a” is concealed. The share [a] of data “a” and an exponent ν are input to an input unit (step S). A local operation unit computes the p-th power of a share [a] of the t-th power of data “a” without communication with the other secret computation apparatuses (step S). A secret computation unit uses secret computation that requires communication with the other secret computation apparatuses to compute a multiplication in which at least one of the multiplicands is the computation result of the local operation unit, to obtain the share [a] (step S). An output unit outputs the share [a] (step S).