Method for securing a microprocessor, corresponding computer program and device
US9141793B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 26, 2008 |
| Grant date | Sep 22, 2015 |
| Priority date | — |
| Expiry date | Jul 23, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F21/755
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method is provided for securing a microprocessor containing at least one main program, which operates with at least one memory. The method includes implementing counter-measures, during which additional operations, that are not required for the main program, are implemented so as to modify the consumption of current and/or the processing time of the microprocessor. The method also includes: identification of at least one address or one memory zone of the memory(ies), called critical addresses, and which contain, or which may contain, critical data for said main program; monitoring the addressing ports of the memory(ies), so as to detect the access to the critical address(es); and activation of the step of implementing counter-measures, when an access to the critical address(es) is detected.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.