Method for converting a conditional access content and receiver for the implementation for said method
US9641331B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 16, 2014 |
| Grant date | May 2, 2017 |
| Priority date | — |
| Expiry date | Apr 25, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/76
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method is disclosed for converting a conditional access content. This method includes receiving, by a cryptographic module of a first receiver, the content encrypted according to the first encryption mode; choosing a first entry data of the combination of the first encryption mode choosing a second entry data of the combination of the second encryption mode inverting the first and second input data in order to process the content received by the cryptographic module of the first receiver, this processing including a decryption operation according to the first encryption mode, by using the entry data corresponding to the second encryption mode, and to process the content obtained during the previous processing step, this processing including an encryption operation according to the second encryption mode, by using the entry data corresponding to the first encryption mode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.