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:
Nov. 03, 2020
Filed:
Jun. 14, 2016
Nec Corporation, Tokyo, JP;
Toshiyuki Isshiki, Tokyo, JP;
Haruna Higo, Tokyo, JP;
NEC CORPORATION, Tokyo, JP;
Abstract
The present invention provides a crypto-information creation device, etc., with which it is possible to create information that enables a safer collation process between information that is the subject of collation and information to be referenced. This crypto-information creation devicehas: a range encryption unitfor calculating a first value included in a range based on a threshold value and encrypting the calculated first value in accordance with a homomorphic encryption scheme, thereby creating a first cryptogram in which the first value is encrypted; and a computation unitfor applying a computation according to the encryption scheme to the first cryptogram and to a second cryptogram in which a second value representing the degree of similarity is encrypted in accordance with the encryption scheme, thereby creating a third cryptogram in which a value obtained by adding together the first value and the second value is encrypted.