Method of establishing a cryptographic key, network head and receiver for this method, and method of transmitting signals
US8885825B2 · kind B2 · utility
5Cited by
6References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 21, 2007 |
| Grant date | Nov 11, 2014 |
| Priority date | — |
| Expiry date | Jul 2, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/64322
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
This method of establishing a cryptographic session key comprises: a subscription phase (104) during which an identifier of a local loop to the end of which a receiver must be connected is acquired, and an authentication step comprising: a) an operation (142) of automatically obtaining an identifier of the local loop to the end of which the receiver is actually connected, and b) an operation (146) of verifying that the identifier obtained during the operation a) corresponds to the identifier acquired during the subscription phase so as to authenticate the receiver.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.