Countermeasure method and device for protecting data circulating in an electronic component
US8330495B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 20, 2010 |
| Grant date | Dec 11, 2012 |
| Priority date | — |
| Expiry date | Dec 27, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K19/003
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A countermeasure in a logic circuit having a logic gate supplying a binary output signal, the method including supplying binary data having random values to inputs of logic circuit during a precharge phase; supplying data to process to inputs of the logic circuit during a data processing phase; supplying on input of the logic circuit a precharge command signal launching a precharge phase; and under the effect of the precharge command signal, adapting the functioning of a logic gate of the logic circuit, statistically unbalanced, so that the output signal of the logic gate is in a binary state with a same probability as the random binary data supplied on input of the logic circuit during the precharge phase.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.