Checking the integrity of an electronic device
US11693991B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 21, 2018 |
| Grant date | Jul 4, 2023 |
| Priority date | — |
| Expiry date | Aug 19, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F21/78
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The method for checking the integrity of an electronic device (DE), in particular a payment terminal, including at least one processor (MPU), a secure element (SE) able to store and manage data and into which a public key that is intended to verify an electronic signature has been loaded, and a data storage means (MEM), whose content has been authenticated beforehand and whose integrity is able to be verified by the public key, is such that a command to check integrity brings about the execution of the following successive steps: the processor (MPU) of the device calls upon the secure element (SE); in response, the secure element (SE) addresses, to the data storage means (MEM), a request for the purpose of receiving the integral content of its memory; the secure element then executes, on the content received from the memory of the data storage means (MEM), an authenticity verification in order to verify, using the public key (KP), that its content has not been able to be modified since its initial authentication; when the authenticity verification succeeds, the device is considered to be integral.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.