Data access method against cryptograph attack
US7941862B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 5, 2007 |
| Grant date | May 10, 2011 |
| Priority date | — |
| Expiry date | Mar 9, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C16/22
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The present invention discloses a data access method accomplished by the following steps of: creating a predetermined password; generating a first encryption key; encrypting data based on the first encryption key; prompting for the predetermined password upon receipt of an access request; decoding a header of the NAND flash memory based on a user-entered password; examining the header to determine whether a mapping between the user-entered password and the first encryption key is defined; and decrypting and outputting the data by a decryption key when the mapping between the user-entered password and the first encryption key is defined.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.