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:
Apr. 02, 2024
Filed:
Sep. 30, 2020
Sony Group Corporation, Tokyo, JP;
Masanobu Jimbo, Tokyo, JP;
Shinya Maruyama, Tokyo, JP;
SONY GROUP CORPORATION, Tokyo, JP;
Abstract
An information processing device () has: an acquisition unit () which acquires, from a second terminal device () of a second user, an encryption search index, which is a search keyword encrypted by searchable encryption using a shared key and a verification key acquired from a first terminal device () of a first user who owns a document, and an identifier of the second user who searches for the document; a test unit () which checks a database, in which the encrypted-document index of an encrypted keyword of the document generated in the first terminal device (), an encrypted document associated with the encrypted-document index, and a test key and a re-encryption key corresponding to the second user are registered, and tests the encryption search index by using the test key based on the identifier of the second user; and a generation unit () which encrypts the encrypted document, which has been searched for by using the tested encryption search index, by the re-encryption key based on the identifier of the second user to generate a search result.