Key extraction in an integrated circuit
US8719666B2 · kind B2 · utility
10Cited by
2References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 29, 2011 |
| Grant date | May 6, 2014 |
| Priority date | — |
| Expiry date | Jun 1, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/34
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method of extraction of a key from a physical unclonable function using the states of cells of a volatile memory after a powering on, wherein: cells are read according to addresses stored in a non-volatile memory; an error-correction code corrects the read states; and, in case an error has been corrected, the address of the cell providing an erroneous state is replaced in the non-volatile memory with that of another cell providing the non-erroneous state.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.