Electronic device using homomorphic encryption and encrypted data processing method thereof
US11824967B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 14, 2021 |
| Grant date | Nov 21, 2023 |
| Priority date | — |
| Expiry date | May 12, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L9/3093
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.