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:
Nov. 18, 2025
Filed:
Mar. 07, 2024
Crypto Lab Inc., Seoul, KR;
Industry-university Cooperation Foundation Hanyang University, Seoul, KR;
Sunpill Kim, Seoul, KR;
Seunghun Paik, Uijeongbu-si, KR;
Chanwoo Hwang, Namyangju-si, KR;
Dongsu Kim, Seoul, KR;
Jae Hong Seo, Seoul, KR;
Junbum Shin, Suwon-si, KR;
Jung Woo Kim, Seoul, KR;
CRYPTO LAB INC., Seoul, KR;
INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITY, Seoul, KR;
Abstract
Disclosed is a server. The server includes a camera, a memory configured to store an encrypted database generated based on a plurality of feature vectors corresponding to a plurality of users, and a processor configured to acquire an image obtained by capturing a target user's face using the camera and transform a feature vector acquired from the image based on transformation and identify the target user based on the transformed feature vector and the encrypted database. The encrypted database is generated by transforming the plurality of feature vectors based on the transformation and homomorphically encrypting the plurality of transformed feature vectors. The transformation transforms components of the feature vectors into 1, −1, or 0 depending on magnitudes and signs of the components of the feature vectors.