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. 10, 2022
Filed:
Feb. 14, 2019
Nippon Telegraph and Telephone Corporation, Chiyoda-ku, JP;
NIPPON TELEGRAPH AND TELEPHONE CORPORATION, Chiyoda-ku, JP;
Abstract
A secure computation device obtains a first concealed verification value [z]=[w−ω]with secure computation by using concealed authentication information [w]which is preliminarily stored and concealed authentication information [ω]which is inputted, obtains a concealed extension field random number [r]∈[F] which is a secret sharing value of an extension field random number r, obtains a second concealed verification value [y]in which yis concealed with secure computation by using the first concealed verification value [z], and obtains a third concealed verification value [ry]with secure computation by using the concealed extension field random number [r]and the second concealed verification value [y]and outputs the third concealed verification value [ry].