Authentication system and method for digital televisions
US8909919B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 16, 2013 |
| Grant date | Dec 9, 2014 |
| Priority date | — |
| Expiry date | Mar 16, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/6334
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The invention relates to digital television authentication system and method. The system includes a digital television having a digital television master chip; an SIM card module with a built-in SIM card, connected to the digital television master chip, and an authentication server wirelessly connected to the SIM card. The SIM card module includes a symmetric key generation unit used for generating a symmetric encryption key CT according to a Session Key (SEK) received by the SIM card and an identity (ID) of the SIM card; and a CW acquisition unit used for decrypting, according to the symmetric encryption key CT, an ECW sent by the authentication server, to obtain a CW. The authentication server includes an SEK generation unit used for randomly generating a string and taking the string as an SEK; and an SEK sending unit used for sending the SEK to the SIM card module.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.