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:
May. 27, 2025
Filed:
Feb. 02, 2023
Applicants:
Seoul National University R&db Foundation, Seoul, KR;
Industry-academic Cooperation Foundation, Chosun University, Gwangju, KR;
Inventors:
Assignees:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04L 29/06 (2006.01); H04L 9/00 (2022.01); H04L 9/06 (2006.01); H04L 9/14 (2006.01);
U.S. Cl.
CPC ...
H04L 9/008 (2013.01); H04L 9/0637 (2013.01); H04L 9/14 (2013.01);
Abstract
In a client-server model for generating a rotation operation key in fully homomorphic encryption, a client transmits a public key and a hierarchical Galois key generated using a secret key to a server, and the server performs a rotation operation on the public key using the hierarchical Galois key to directly generate one or more rotation operation keys, so that the server may generate a rotation operation key if necessary while computational burden and communication cost of the client are reduced.