Key rotation techniques
US9608813B1 · kind B1 · utility
24Cited by
32References
28Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 13, 2013 |
| Grant date | Mar 28, 2017 |
| Priority date | — |
| Expiry date | Jun 13, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L63/0807
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A plurality of devices have common access to a cryptographic key. The cryptographic key is rotated by providing the devices simultaneous access to both the cryptographic key and a new cryptographic key and then revoking access to the cryptographic key. Keys stored externally and encrypted under the cryptographic key can be reencrypted under the new cryptographic key. Keys intended for electronic shredding can be left encrypted under the old cryptographic key.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.