Read and write optimization for protected area of memory
US8775827B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 28, 2011 |
| Grant date | Jul 8, 2014 |
| Priority date | — |
| Expiry date | Mar 28, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2221/2149
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A system (and method) to update content of a secure area of a secure digital (SD) card is disclosed. The system performs a first authenticated key exchange to access the secure area of the secure digital memory. The system reads content from the secure area in response to successful performance of the first authenticated key exchange. The system modifies the content in a memory of a computer system. The system performs a second authenticated key exchange to access the secure area of the secure digital card in preparation to write to the secure area of the secure digital memory. The system then writes modified content to the secure area of the secure digital memory in response to successful performance of the second authenticated key exchange.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.