Method for sharing the authorization to use specific resources
US7343014B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 15, 2003 |
| Grant date | Mar 11, 2008 |
| Priority date | — |
| Expiry date | Nov 17, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/76
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The invention relates to a method for sharing the authorization to use specific resources among multiple devices, which resources are accessible via messages on which a secret key operation was applied with a predetermined secret master key d available at a master device 11. In order to provide an optimized sharing of authorization, it is proposed that the master device 11 splits the secret master key d into two parts d1, d2. A piece of information relating to the first part d1 of the secret master key d is forwarded to the slave device 13 for enabling this slave device to perform a partial secret key operation on a message m. The second part d2 of the secret master key d is forwarded to a server 12 for enabling the server 12 to perform partial secret key operations on a message m received from the slave device 13.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.