Method and device for detecting an attempt to substitute an original casing portion of an electronic system with a replacement casing portion
US8572402B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 22, 2008 |
| Grant date | Oct 29, 2013 |
| Priority date | — |
| Expiry date | Aug 17, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2221/2129
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
The invention relates to an electronic system comprising a casing consisting of at least first and second casing portions and containing a device for detecting the substitution of the first casing portion. The device comprises a first integrated circuit intended to be fixed to the first casing portion and a second integrated circuit intended to be fixed to the second casing portion. The second circuit is adapted to transmit to the first integrated circuit successive random or pseudo-random digital signals (R). The first integrated circuit is adapted to return to the second integrated circuit, for each digital signal, the first encrypted signature (S) from said digital signal. The second integrated circuit is adapted to determine a second encrypted signature (S′) from said digital signal and to detect a substitution of the first casing portion if the first and second encrypted signatures are different.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.