Method for reencryption of a database
US7490248B1 · kind B1 · utility
71Cited by
15References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 13, 2000 |
| Grant date | Feb 10, 2009 |
| Priority date | — |
| Expiry date | Apr 9, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2221/2107
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method for encryption of the content in a database, the method including the steps of detecting that a predetermined time period has elapsed, generating an unexpired encryption key, associating the unexpired encryption key with expiration information, scanning the database for an encrypted item, the encrypted item corresponding to a plaintext item, the encrypted item having been encrypted using an expired encryption key, and encrypting the plaintext item, using the unexpired encryption key, into a reencrypted item.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.