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:
Mar. 15, 2022
Filed:
May. 27, 2020
Samsung Sds Co., Ltd., Seoul, KR;
Eun Kyung Kim, Seoul, KR;
Duk Jae Moon, Seoul, KR;
Hyo Jin Yoon, Seoul, KR;
Jung Hoon Sohn, Seoul, KR;
Jang Hyuk Ahn, Seoul, KR;
Jin Hyuck Jeong, Seoul, KR;
Ji Hoon Kwon, Seoul, KR;
Young Hyun Kim, Seoul, KR;
SAMSUNG SDS CO., LTD., Seoul, KR;
Abstract
A method for performing an operation according to one embodiment includes performing a homomorphic operation using one or more ciphertexts that are homomorphically encrypted based on an encryption key, determining a count value for a ciphertext generated through the homomorphic operation based on count values for each of the one or more ciphertexts, requesting a key management apparatus, which holds the encryption key and a decryption key corresponding to the encryption key, to re-encrypt the generated ciphertext based on the determined count value, acquiring, from the key management apparatus, a ciphertext generated by re-encrypting the generated ciphertext through decryption based on the decryption key and encryption based on the encryption key; and determining a count value for the acquired ciphertext to be a preset initial value.