Storage device including a non-volatile memory
US7162645B2 · kind B2 · utility
53Cited by
18References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 5, 2002 |
| Grant date | Jan 9, 2007 |
| Priority date | — |
| Expiry date | Jun 24, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2221/2113
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A storage device includes a tamper-resistant module and a flash memory. In correspondence with a command, a CPU inside the tamper-resistant module judges the security of data received from the outside, then recording the data as follows: High-security and small-capacity data is recorded into a memory inside the tamper-resistant module. High-security and large-capacity data is encrypted, then being recorded into the flash memory. Low-security data is recorded as it is into the flash memory. This recording method permits large-capacity data to be stored while ensuring a security (i.e., a security level) corresponding thereto.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.