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:
Feb. 17, 2026
Filed:
Feb. 16, 2023
Seoul National University R&db Foundation, Seoul, KR;
Industry-academic Cooperation Foundation, Chosun University, Gwangju, KR;
Jong-Seon No, Seoul, KR;
Young-Sik Kim, Gwangju, KR;
Zahyun Koo, Anyang-si, KR;
Joon-Woo Lee, Seoul, KR;
SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION, Seoul, KR;
INDUSTRY-ACADEMIC COOPERATION FOUNDATION, CHOSUN UNIVERSITY, Gwangju, KR;
Abstract
A device for performing multi-key homomorphic encryption includes a public key generator configured to generate a public key by using a secret key for each client, and a multiplication key generator configured to generate a multiplication key by reusing a public key protection error used in the generating of the public key. By reducing the size of the multiplication key by reusing the public key protection error, the operation time and memory may be reduced.