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:
Oct. 17, 2023
Filed:
Apr. 29, 2021
Mitsubishi Electric Corporation, Tokyo, JP;
Kenichiro Hayasaka, Tokyo, JP;
Yutaka Kawai, Tokyo, JP;
MITSUBISHI ELECTRIC CORPORATION, Tokyo, JP;
Abstract
A secret search system is configured to generate a search key TDin which a position of each character of a search character string is specified and set, and to search for, from among a plurality of encrypted tags ETin which a position of each character of a character-string-to-be-searched is specified and set, an encrypted tag ETcorresponding to the generated se arch key TD. In particular, the secret search system is configured to search for an encrypted tag ETincluding the search key TDas a partial character string by setting a position t of each character in one of the search key TDand the encrypted tags ET, setting a position −t of each character having a sign obtained by inverting a sign of the position t in the other thereof, and cancelling out, during the search, the position t and the position −t.