System and method for ensuring integrity and confidentiality of data programmed in an insecure manufacturing environment
US10860744B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 20, 2018 |
| Grant date | Dec 8, 2020 |
| Priority date | — |
| Expiry date | Aug 14, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L9/3268
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A system and method of downloading firmware into an embedded device while maintaining the integrity and confidentiality of the firmware is disclosed. In one embodiment, the process comprises four phases. In the first phase, unauthenticated content is written into the memory of the embedded device. In the second phase, this content is verified. In the third step, a secure connection is established between the host and the embedded device. In the fourth step, the firmware is loaded into the embedded device using this secure connection. The firmware is encrypted as it is transferred from the host to the embedded device and is never accessible outside of the embedded device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.