Christian Limpach writes: > > > Are you sure about that? AFAIK the CAM (the PCMCIA card) only returns > the > > > actual descrambler key (using informations found in the TS and in your > > > valid subscription card ofcoz'). You still need to descramble the > > > encrypted channel using this key (this is done outside the CAM - e.g. in > > > the AV711x on the rev1.3 card). And the algorithm you need here is > > > something you probably never can get... so the nova card + PCMCIA card > > > reader combination still misses an entity (the descrambler). > > > > No, you are wrong . The CAM contains a transport stream interface, to get > > the encrypted stream and return the decrypted stream. Please read the EN > > 50221 standard freely available at www.etsi.org . > > > Then either the standard is wrong or you misread it since this seems not to > be the case. At least the software CI/CAM only sends the descrambler keys > to the DVB card and only needs the ECM PES as input, it never sees the > actual encrypted/decrypted data. I don't know which part of the DVB card > does the descrambling, but there seems to be some relation between the > descrambler and the streams setup to be demuxed as DMX_PES_VIDEO/AUDIO on a > full card. >
The ECD on the DVB card is never used in normal CAM operations. The so-called software CAM is not a CAM, it is just an implementation of the key descrambler. The ECD on the DVB card is meant to be used with a smartcard reader and a license and implementation of the respective descrambling system (e.g. Viaccess, Conax, Irdeto etc.). This is done in a variety of STBs, usually with Viaccess, which use the AV711x chip. Marcus -- Info: To unsubscribe send a mail to [EMAIL PROTECTED] with "unsubscribe linux-dvb" as subject.
