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公开(公告)号：US20240259356A1
公开(公告)日：2024-08-01
申请号：US18426693
申请日：2024-01-30
申请人： Seoul National University R&DB Foundation , Industry-Academic Cooperation Foundation, Chosun University
发明人： Jong Seon NO , Joon Woo LEE , Young Sik KIM
IPC分类号： H04L9/40
CPC分类号： H04L63/0435
摘要： A server for performing an operation on a homomorphic ciphertext is configured to: receive a first homomorphic ciphertext, a public key, and a first hierarchical Galois key set from a client device; in response to a request for generating a second hierarchical Galois key set for performing a rotation operation on the first homomorphic ciphertext of the client device, generate the second hierarchical Galois key set, based on the received public key and hierarchical Galois key set; and when a decomposition operation for a first Galois key included in the second hierarchical Galois key set overlaps with a decomposition operation for a second Galois key, first perform the decomposition operation for the first Galois key, and then substitute the decomposition operation for the second Galois key with a result of the decomposition operation for the first Galois key.
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公开(公告)号：US20240273218A1
公开(公告)日：2024-08-15
申请号：US18498667
申请日：2023-10-31
申请人： Samsung Electronics Co., Ltd. , Seoul National University R&DB Foundation , Daegu Gyeongbuk Institute of Science and Technology , Industry Academic Cooperation Foundation, Chosun University
发明人： Jong Seon NO , Eun Sang LEE , Joon Woo LEE , Young Sik KIM , Yongjune KIM , Jung Hyun LEE
CPC分类号： G06F21/602 , G06F7/4876 , G06F17/156
摘要： An apparatus with a neural network operation of homomorphic encrypted data includes: one or more processors configured to: generate homomorphic conjugation data of encrypted data based on the encrypted data, wherein the encrypted data corresponds to an output of each of a plurality of layers included in a neural network; and remove noise of the encrypted data based on the encrypted data and the homomorphic conjugation data.
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公开(公告)号：US20240211737A1
公开(公告)日：2024-06-27
申请号：US18470589
申请日：2023-09-20
申请人： SAMSUNG ELECTRONICS CO., LTD. , Seoul National University R&DB Foundation , Daegu Gyeongbuk Institute of Science and Technology , Industry Academic Cooperation Foundation, Chosun University
发明人： Jong Seon NO , Yongjune KIM , Eun Sang LEE , Jung Hyun LEE , Young Sik KIM , Joon Woo LEE
摘要： An apparatus includes one or more processors configured to execute instructions; and one or more memories storing the instructions; wherein the execution of the instructions by the one or more processors configures the one or more processors to generate an approximate polynomial, approximating a neural network operation, of a portion of a deep neural network model that is configured to receive input data, by using weighted least squares based on parameters corresponding to the generation of the approximate polynomial, a mean of the input data, and a standard deviation of the input data; and generate a homomorphic encrypted data operation result based on the input data and the approximate polynomial that approximates the neural network operation.
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4.发明公开公开(公告)号：US20230254125A1
公开(公告)日：2023-08-10
申请号：US18105325
申请日：2023-02-03
申请人： SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION , INDUSTRY-ACADEMIC COOPERATION FOUNDATION, CHOSUN UNIVERSITY
发明人： Jong Seon NO , Joon Woo LEE , Young Sik KIM
CPC分类号： H04L9/0825 , H04L9/008
摘要： A homomorphic encryption operation key management system receives a public key and a hierarchical Galois key from a client device, verifies validity of a token in response to receiving the token and a request for a homomorphic encryption operation key for the client device from a server, and generates the homomorphic encryption operation key using the public key and the hierarchical Galois key and transmits the homomorphic encryption operation key to the server when the token is valid.
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公开(公告)号：US20210376998A1
公开(公告)日：2021-12-02
申请号：US17320181
申请日：2021-05-13
申请人： Seoul National University R&DB Foundation , Industry-Academic Cooperation Foundation, Chosun University
发明人： Jong Seon NO , Young Sik KIM , Joon Woo LEE
摘要： Provided are an electronic device for sorting homomorphic ciphertext by using shell sorting and an operating method thereof to sort ciphertext generated by using homomorphic encryption according to a size of an original number corresponding thereto.
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公开(公告)号：US20210328766A1
公开(公告)日：2021-10-21
申请号：US17172643
申请日：2021-02-10
申请人： SAMSUNG ELECTRONICS CO., LTD. , SUN R&DB FOUNDATION , Industry Academic Cooperation Foundation Chosun University
发明人： Jong Seon NO , Yong Woo LEE , Young Sik KIM , Joon Woo LEE
IPC分类号： H04L9/00
摘要： A method and apparatus for processing a ciphertext based on homomorphic encryption. The method includes determining an approximate polynomial corresponding to a modulus reduction for bootstrapping a ciphertext based on samples extracted from the modulus reduction, and bootstrapping the ciphertext based on the approximate polynomial.
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7.发明申请公开(公告)号：US20210336765A1
公开(公告)日：2021-10-28
申请号：US17236176
申请日：2021-04-21
申请人： SAMSUNG ELECTRONICS CO., LTD. , SNU R&DB FOUNDATION , Industry Academic Cooperation Foundation Chosun University
发明人： Jong Seon NO , Yong Woo LEE , Eunsang LEE , Joon Woo LEE , Young Sik KIM
摘要： An encryption method and apparatus based on homomorphic encryption using a composition of functions. The encryption method includes generating a ciphertext by encrypting data, and bootstrapping the ciphertext by performing a modular reduction based on a composition of a function for a modulus corresponding to the ciphertext.
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8.发明公开公开(公告)号：US20230254112A1
公开(公告)日：2023-08-10
申请号：US18105117
申请日：2023-02-02
发明人： Jong Seon NO , Joon Woo LEE , Young Sik KIM
CPC分类号： H04L9/008 , H04L9/0637 , H04L9/14
摘要： In a client-server model for generating a rotation operation key in fully homomorphic encryption, a client transmits a public key and a hierarchical Galois key generated using a secret key to a server, and the server performs a rotation operation on the public key using the hierarchical Galois key to directly generate one or more rotation operation keys, so that the server may generate a rotation operation key if necessary while computational burden and communication cost of the client are reduced.
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