METHOD AND APPARATUS FOR MODULUS REFRESH IN HOMOMORPHIC ENCRYPTION

Disclosed is a method and apparatus for modulus refresh, where the method for modulus refresh of a ciphertext in homomorphic encryption includes receiving a first ciphertext corresponding to a first modulus, generating a second ciphertext by performing a blind rotation on the first ciphertext, and g...

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Bibliographic Details
Main Authors GHANG, Whan, KIM, Andrey, LEE, Yongwoo, CHOI, Rakyong, EOM, Jieun, MAKSIM, Deriabin, YOO, Dong-Hoon
Format Patent
LanguageEnglish
Published 24.11.2022
Subjects
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION
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Summary:Disclosed is a method and apparatus for modulus refresh, where the method for modulus refresh of a ciphertext in homomorphic encryption includes receiving a first ciphertext corresponding to a first modulus, generating a second ciphertext by performing a blind rotation on the first ciphertext, and generating a target ciphertext corresponding to a second modulus greater than the first modulus based on the first ciphertext and the second ciphertext.
Bibliography:Application Number: US202217678596