Data protection method and storage device
US11386019B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 6, 2021 |
| Grant date | Jul 12, 2022 |
| Priority date | — |
| Expiry date | Apr 6, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2221/2143
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The present invention discloses data secure method, applied to a storage device, and performed by a controller of the storage device. The data secure method comprises: receiving a buffer clear command from an external processing unit, wherein the buffer clear command indicates that a first secure area corresponding to a first physical address range of a buffer memory of the storage device is required to be cleared, and a first secure key is corresponding to the first secure area for accessing the first secure area; and in response to the buffer clear command, configuring a secure unit of the storage device to cause the secure unit to use one or more second keys different from the first secure key when accessing the first physical address range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.