ENCRYPTION KEY GENERATING METHOD APPRATUS CIPHERTEXT OPERATION METHOD AND APPARATUS USING THE GENERATED ENCRYPTION KEY

Disclosed are an encryption key generating method in homomorphic encryption and a device thereof, and a ciphertext calculating method using a generated encryption key and a device thereof. According to an embodiment, the encryption key generating method for performing encryption based on homomorphic...

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Main Authors LEE, YONG WOO, DERIABIN MAKSIM, YOO, DONG HOON, EOM, JI EUN, GHANG, WHAN, KIM ANDREY, CHOI, RAK YONG
Format Patent
LanguageEnglish
Korean
Published 29.11.2022
Subjects
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION
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Summary:Disclosed are an encryption key generating method in homomorphic encryption and a device thereof, and a ciphertext calculating method using a generated encryption key and a device thereof. According to an embodiment, the encryption key generating method for performing encryption based on homomorphic encryption comprises the following steps of: receiving data; generating a first encryption key and a second encryption key used for encrypting the data based on a secret key; and transmitting the first encryption key and the second encryption key. 동형 암호에서 암호 키 생성 방법, 장치, 생성된 암호 키를 이용한 사이퍼텍스트 연산 방법 및 장치가 개시된다. 동형 암호(homomorphic encryption)에 기초한 암호화를 수행하기 위한 암호 키 생성 방법에 있어서, 일 실시예에 따른 암호 키 생성 방법은, 데이터를 수신하는 단계와, 비밀 키(secret key)에 기초하여 상기 데이터의 암호화에 이용되는 제1 암호 키 및 제2 암호 키를 생성하는 단계와, 상기 제1 암호 키 및 상기 제2 암호 키를 전송하는 단계를 포함한다.
Bibliography:Application Number: KR20210114638