Method for updating encrypted firmware
US12307242B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 15, 2023 |
| Grant date | May 20, 2025 |
| Priority date | — |
| Expiry date | Nov 21, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F21/572
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method for updating encrypted firmware is performed by a terminal device. The method includes the following steps: receiving an encrypted differential upgrade package or a differential upgrade package through a communication channel, wherein when the terminal device receives the encrypted differential upgrade package, the terminal device decrypts the encrypted differential upgrade package to obtain the differential upgrade package; decrypting an encrypted to-be-upgrade firmware of the terminal device to obtain a decrypted to-be-upgraded firmware; generating a decrypted target firmware according to the decrypted to-be-upgraded firmware and the differential upgrade package; and encrypting the decrypted target firmware to generate an encrypted target firmware, and storing the encrypted target firmware in the terminal device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.