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.

Date of Patent:
Oct. 13, 2026

Filed:

Jun. 05, 2024
Applicant:

Mitsubishi Electric Corporation, Tokyo, JP;

Inventors:

Takato Hirano, Tokyo, JP;

Yutaka Kawai, Tokyo, JP;

Yoshihiro Koseki, Tokyo, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 21/62 (2013.01); G06F 21/60 (2013.01); H04L 9/08 (2006.01); H04L 9/14 (2006.01);
U.S. Cl.
CPC ...
G06F 21/6218 (2013.01); G06F 21/602 (2013.01); G06F 21/62 (2013.01); H04L 9/0819 (2013.01); H04L 9/14 (2013.01);
Abstract

A registration request device () includes a generation unit () and a request unit (). The generation unit () acquires a registration key of a registration secret key composed of the registration key and a registration auxiliary key, plaintext data, and a public parameter, and encrypts the plaintext data using the registration key and the public parameter so as to generate encrypted data. The registration secret key is generated using a master key and the public parameter, and is composed of the registration key used for encrypting data and the registration auxiliary key used for transforming encrypted data. The request unit () transmits the encrypted data to a data management device. The data management device transforms the encrypted data using the registration auxiliary key and the public parameter, and registers transformed encrypted data obtained by transformation in a registration database in association with an identifier that identifies the plaintext data.


Find Patent Forward Citations

Hirano, Takato. (2026). Searchable encryption system, data management device, searchable encryption method, and computer readable medium (U.S. Patent No. 12762264). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12762264

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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