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:
Jan. 24, 2023
Filed:
Nov. 17, 2017
Applicant:
Crypto Lab Inc., Seoul, KR;
Inventors:
Jung Hee Cheon, Seoul, KR;
Joo Hee Lee, Seoul, KR;
Assignee:
Crypto Lab Inc., Seoul, KR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04L 9/30 (2006.01); H04L 9/08 (2006.01);
U.S. Cl.
CPC ...
H04L 9/3026 (2013.01); H04L 9/0869 (2013.01); H04L 9/0894 (2013.01); H04L 2209/20 (2013.01);
Abstract
Disclosed are a calculation device for encryption using a public key and an encryption method thereof. The present method comprises: a step for setting a secret key, and generating a public key using the secret key and an error extracted from a discrete Gaussian distribution or a distribution that is within a short statistical distance thereto; and a step for applying the public key to a message, and then performing a rounding process to encrypt the message. Accordingly, encryption efficiency can be enhanced.