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公开(公告)号：US20220094521A1
公开(公告)日：2022-03-24
申请号：US17343318
申请日：2021-06-09
Applicant: SAMSUNG ELECTRONICS CO., LTD.
Inventor： YOUNGSIK MOON , WIJIK LEE , HONGRAK SON
Abstract: An encryption device includes: a parameter generating circuit configured to generate an encryption parameter including a number of initial valid bits based on an operation scenario; an encryption circuit configured to generate a cipher text by encrypting a plain text received from the outside, based on the encryption parameter; an operation circuit configured to generate a final cipher text by performing a plurality of operations on the cipher text according to the operation scenario and tag, to the final cipher text, history information of the operations performed on the final cipher text; and a decryption circuit configured to generate a decrypted plain text by decrypting the final cipher text and output a number of reliable bits of the decrypted plain text based on the history information.
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公开(公告)号：US20210376996A1
公开(公告)日：2021-12-02
申请号：US17126935
申请日：2020-12-18
Applicant: SAMSUNG ELECTRONICS CO., LTD.
Inventor： YOUNGSIK MOON , HONGRAK SON
Abstract: A homomorphic encryption device includes: a recryption parameter generating circuit, a recryption circuit, and an arithmetic circuit. The recryption parameter generating circuit is configured to generate a recryption parameter including a plurality of recryption levels respectively for a plurality of ciphertexts based on an arithmetic scenario including information about an arithmetic schedule between the plurality of ciphertexts. The recryption circuit is configured to generate a plurality of recrypted ciphertexts by recrypting each of the plurality of ciphertexts to a corresponding recryption level based on the recryption parameter. The arithmetic circuit is configured to output an arithmetic result by performing operations by using the plurality of recrypted ciphertexts, according to the arithmetic scenario.
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