Method and device for securing the reading of a memory
US7747935B2 · kind B2 · utility
2Cited by
3References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 12, 2007 |
| Grant date | Jun 29, 2010 |
| Priority date | — |
| Expiry date | Jul 13, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F21/79
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method reads a datum saved in a memory by selecting an address of the memory in which the datum to be read is saved, reading the datum in the memory at the selected address, saving the datum read in a storage space, and when the memory is not being accessed by a CPU, reading the datum in the memory, reading the datum saved in the storage space, and activating an error signal if the datum read in the memory is different from the datum saved. The method can be applied particularly to the protection of smart card integrated circuits.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.