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:
Jan. 05, 2021
Filed:
Feb. 01, 2016
Nippon Telegraph and Telephone Corporation, Chiyoda-ku, JP;
Dai Ikarashi, Musashino, JP;
Koji Chida, Musashino, JP;
Ryo Kikuchi, Musashino, JP;
Koki Hamada, Musashino, JP;
NIPPON TELEGRAPH AND TELEPHONE CORPORATION, Chiyoda-ku, JP;
Abstract
An efficient share recovery technique for Shamir's secret sharing is provided. n share recovery apparatuses p, . . . , pgenerate a share [r]of a secretly shared value shared through Shamir's secret sharing, which becomes a random number r when restored. k share recovery apparatuses σ, . . . , σcalculate a share [b]by subtracting the share [r]from a share [a]. The share recovery apparatus τreceives the shares [b], . . . , [b]from the share recovery apparatuses σ, . . . , σ. The share recovery apparatus τrecovers shares [b], . . . , [b]using the shares [b], . . . , [b]. m−1 share recovery apparatuses τ, . . . , τreceive a share [b]from the share recovery apparatus τ. m share recovery apparatuses τ, . . . , τcalculate the share [a]by adding the share [r]to the share [b].