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:
Sep. 07, 2021
Filed:
Apr. 22, 2020
Applicant:
Crypto Lab Inc., Seoul, KR;
Inventors:
Jung Hee Cheon, Seoul, KR;
Duhyeong Kim, Seoul, KR;
Yongsoo Song, San Diego, CA (US);
Kyoohyung Han, Goyang-si, KR;
Assignee:
Crypto Lab Inc., Seoul, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04L 9/00 (2006.01); H04L 9/30 (2006.01);
U.S. Cl.
CPC ...
H04L 9/008 (2013.01); H04L 9/304 (2013.01); H04L 9/3093 (2013.01);
Abstract
A decryption method includes: receiving a homomorphic ciphertext; and obtaining a result value added an error value at a message from the received homomorphic ciphertext. The error is disposed on the least significant bit (LSB) side in the homogeneous ciphertext, and the message is disposed at a position adjacent to the error.