Memory management device and memory management method
US8732480B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 1, 2011 |
| Grant date | May 20, 2014 |
| Priority date | — |
| Expiry date | Apr 9, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F21/64
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
According to an embodiment, a memory management device increments a lower value of a first counter, updates the counter by incrementing an upper value and resetting the lower value when the lower value overflows, increments to update the lower counter value when the upper value is incremented as a result of writing a second data piece having the upper value in common to a memory, recalculates a first secret value calculated using the first counter values and a root secret value in response to the first counter update, writes a first data piece and the first secret value to the memory, and at reading of the first data piece and the first secret value, calculates a second secret value using the updated first counter values and the root secret value, and compares the first secret value with the second secret value to verify the first data piece.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.