Method of encrypting data in nonvolatile memory device, nonvolatile memory device and user device
US11567879B2 · kind B2 · utility
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20Claims
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Key dates
| Filing date | Dec 10, 2020 |
| Grant date | Jan 31, 2023 |
| Priority date | — |
| Expiry date | Aug 4, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/08
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method of encrypting data in a nonvolatile memory device (NVM) includes; programming data in selected memory cells, sensing the selected memory cells at a first time during a develop period to provide random data, sensing the selected memory cells at a second time during the develop period to provide main data, encrypting the main data using the random data to generate encrypted main data, and outputting the encrypted main data to an external circuit, wherein the randomness of the random data is based on a threshold voltage distribution of the selected memory cells.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.