Method and apparatus to generate zero content over garbage data when encryption parameters are changed
US11416417B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 18, 2020 |
| Grant date | Aug 16, 2022 |
| Priority date | — |
| Expiry date | Sep 24, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/34
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method is provided that includes reading data in a storage medium, detecting, during the reading of the data in the storage medium, by a controller a change in an encryption/decryption scheme used to read and write the data in the storage medium, in response to detecting the change in encryption/decryption scheme in the data, causing, by the controller, a logical block address to return an indication of being written in zeros when a physical block address associated with the logical block address encrypted using an first encryption/decryption scheme, and causing, by the controller, a write channel to write zeroes using a second encryption/decryption scheme to the physical block address.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.