Key management device, system and method having a rekey mechanism
US8886935B2 · kind B2 · utility
2Cited by
1References
14Claims
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Key dates
| Filing date | Mar 23, 2011 |
| Grant date | Nov 11, 2014 |
| Priority date | — |
| Expiry date | May 13, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY04S40/20
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
According to some embodiments, a key management apparatus for deploying in a smart grid system adapted to receive metering data from smart meters connected to at least one relay via a network, includes: a key control mechanism that derives a key array of individual purpose specific keys from one master key such that the purpose specific key in the key array are each independent cryptographic keys for each specific usage in an application or for each application if there is only one specific usage in an application.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.