Systems and methods for securing the power supply of command means of a microcircuit card in case of attack
US8453261B2 · kind B2 · utility
2Cited by
0References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 13, 2011 |
| Grant date | May 28, 2013 |
| Priority date | — |
| Expiry date | Dec 13, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K19/07363
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
This microcircuit card includes means for detecting an attack on the card, command means (130) capable of charging a charge pump (120) capable of applying a programming voltage (UP) to command a write operation into a cell (110) of a nonvolatile memory when an attack is detected, and a capacitor (140) arranged so as to be supplied with power during normal operation and to supply said charge pump (120) with power only when an attack is detected. The card (100) being characterized in that said capacitor (140) also supplies power to the command means (130) when an attack is detected.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.