Process for protecting an information item transmitted from a security element to a decoder and protection system using such a process
US6266415A · kind A · utility
68Cited by
4References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 12, 1997 |
| Grant date | Jul 24, 2001 |
| Priority date | — |
| Expiry date | Nov 12, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04H60/13
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The invention relates to a process for protecting an information item transmitted from a security element to a decoder and a protection system using such a process. The information item is protected by encrypting within the security element the information item to be transmitted to the decoder and by decrypting this information item within the decoder. The invention applies to conditional-access systems.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.