Method and Device for multi-key homomorphic encryption
As a preferred embodiment of the present invention, a device for performing multi-key homomorphic encryption comprises: a public key generating unit that generates a public key by using a private key for each client; and a multiplication key generating unit that generates a multiplication key by reu...
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Main Authors | , , , |
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Format | Patent |
Language | English Korean |
Published |
31.08.2023
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Subjects | |
Online Access | Get full text |
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Summary: | As a preferred embodiment of the present invention, a device for performing multi-key homomorphic encryption comprises: a public key generating unit that generates a public key by using a private key for each client; and a multiplication key generating unit that generates a multiplication key by reusing a public key protection error used to generate the public key. There is an effect of reducing computation time and memory by reducing a size of the multiplication key by reusing the public key protection error.
본 발명의 바람직한 일 실시예로서, 다중키 동형암호를 수행하는 장치는 클라이언트마다 비밀키를 이용하여 공개키를 생성하는 공개키 생성부; 및 상기 공개키 생성에 사용한 공개키보호에러를 재사용하여 곱셈키를 생성하는 곱셈키 생성부;를 포함한다. 공개키보호에러를 재사용하여 곱셈키의 크기를 줄임으로써 연산시간과 메모리를 줄일 수 있는 효과가 있다. |
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Bibliography: | Application Number: KR20220154691 |