Method of operating memory system with replay attack countermeasure and memory system performing the same
US11552801B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 13, 2020 |
| Grant date | Jan 10, 2023 |
| Priority date | — |
| Expiry date | Jan 13, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2221/2151
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
In a method of operating a memory system, first security data and a first timestamp for preventing a replay attack are written by a host device to a first memory area which is an external memory area. A second timestamp is updated by the host device based on the first timestamp. The second timestamp corresponding to the first timestamp is stored in a second memory area distinguished from the first memory area. A first notification signal representing a result of updating the second timestamp is received by the host device. A writing operation for the first security data is completed when it is determined, by the host device, based on the first notification signal that the second timestamp is successfully updated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.