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:
Aug. 13, 2024
Filed:
Dec. 12, 2018
Nec Corporation, Tokyo, JP;
Toshiyuki Isshiki, Tokyo, JP;
Haruna Fukuda, Tokyo, JP;
Hiroto Tamiya, Tokyo, JP;
Masahiro Nara, Tokyo, JP;
NEC CORPORATION, Tokyo, JP;
Abstract
A collation system, which is provided with a clientand a server, the clientincludes: a random number generation unitwhich generates a random number; a concealed information storage unitwhich stores concealed information generated by concealing registered information and the generated random number using a concealment key; and a concealed index computation unitwhich, on the basis of the collation information input for collation with the registered information and the concealed information, computes a concealed index, generated by concealing an index indicating closeness between the registered information and the collation information; the serverincludes a determination unitwhich uses a release key corresponding to the concealment key and the random number transmitted from the clientto determine whether or not the index can be acquired from the concealed index transmitted from the client