Method and apparatus for the authentication of integrated circuits
US6848049B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 10, 1998 |
| Grant date | Jan 25, 2005 |
| Priority date | — |
| Expiry date | Jun 10, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07F7/082
- WIPO fieldIT methods for management
- WIPO sectorElectrical engineering
Abstract
A method for the authentication of an integrated circuit in an application system comprises, for the integrated circuit: detecting an activation scenario, and then modifying at least one of its responses. The application system implements an application program which sends instructions to the integrated circuit. The activation scenario is contained in the sequence of instructions received from the application program. The modification causes no malfunction of the integrated circuit in the application system, and therefore does not put the integrated circuit out of operation. A complementary method for the application system comprises: detecting an activation scenario; measuring the response of the integrated circuit to the activation scenario; verifying the response if it has been modified correctly by the integrated circuit; and authenticating the integrated circuit if the response is verified.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.