公开(公告)号：US12170719B2

公开(公告)日：2024-12-17

申请号：US18379384

申请日：2023-10-12

Applicant: Samsung Electronics Co., Ltd.

Inventor： Ju-Young Jung ,  Jiyoup Kim ,  Changkyu Seol ,  Pilsang Yoon ,  Jinsoo Lim ,  Myunghoon Choi

IPC: H04L9/00 ,  G06F21/32 ,  H04L9/08 ,  G06F21/60

Abstract: An electronic device includes a memory storing data from an external source, an application processing unit (APU) transmitting a secret key and public key generation command, an isolated execution environment (IEE) generating a secret key in response to the secret key generation command, generating a public key based on the secret key in response to the public key generation command, and storing the secret key, and a non-volatile memory performing write and read operations depending on a request of the APU. When the data are stored in the memory, the APU transmits a public key request to the IEE and in response the IEE transfers the public key to the APU through a mailbox protocol. The APU generates a ciphertext by performing homomorphic encryption on the data based on an encryption key in the public key, and classifies and stores the public key and the ciphertext in the non-volatile memory.

公开(公告)号：US11824967B2

公开(公告)日：2023-11-21

申请号：US17347055

申请日：2021-06-14

Applicant: Samsung Electronics Co., Ltd.

Inventor： Ju-Young Jung ,  Jiyoup Kim ,  Changkyu Seol ,  Pilsang Yoon ,  Jinsoo Lim ,  Myunghoon Choi

IPC: H04L9/00 ,  H04L9/08

CPC classification number: H04L9/008 ,  H04L9/0819 ,  H04L9/0869 ,  H04L9/0894

Abstract: An electronic device includes a memory storing data from an external source, an application processing unit (APU) transmitting a secret key and public key generation command, an isolated execution environment (IEE) generating a secret key in response to the secret key generation command, generating a public key based on the secret key in response to the public key generation command, and storing the secret key, and a non-volatile memory performing write and read operations depending on a request of the APU. When the data are stored in the memory, the APU transmits a public key request to the IEE and in response the IEE transfers the public key to the APU through a mailbox protocol. The APU generates a ciphertext by performing homomorphic encryption on the data based on an encryption key in the public key, and classifies and stores the public key and the ciphertext in the non-volatile memory.