Methods for protecting a smart card
US7219844B2 · kind B2 · utility
3Cited by
5References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 27, 2002 |
| Grant date | May 22, 2007 |
| Priority date | — |
| Expiry date | Jun 26, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY04S40/20
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method for protecting an electronic entity such as a smart card, against simple/differential power analysis, by integrating a current accumulator in said entity. The current accumulator (19) powers a processor (P) via a multiplexer (20) when the processor is loaded to execute so-called sensitive operations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.