Re: CI/CAM support for offline (from file) decoding

[Kovacs Balazs <basq@bitklub.hu>]

>> -----Original Message-----
>> From: linux-media-owner@vger.kernel.org [mailto:linux-media-
>> owner@vger.kernel.org] On Behalf Of Ralph Metzler
>> Sent: jeudi 26 janvier 2012 13:21
>> To: linux-media@vger.kernel.org
>> Subject: Re: CI/CAM support for offline (from file) decoding
>> 
>> Kovacs Balazs writes:
>>  > Yes,  i  thought about that, but i need the Hardware CAM + CI,
>> because  > it's chip paired encryption. It means in my situation that
>> the EMM and  > ECM is also encrypted so it's hard to use in a SoftCam
>> configuration.
>>  >
>>  > I hope there's a solution in the DVB driver space.
>>  >
>>  > I receive the signal via RF or IP. If via RF i think it can be
>> decoded  > via  the  HW,  and  the  record  it  to  disk,  but i need
>> the full TS  > decrypted, and i think it's not possible (to decrypt all
>> the encrypted  > ES  which  can be 20-30-40 in real time when i receive
>> the signal). In  > IP  configuration  it's also not possible. So i have
>> the recorded full  > TS  pieces  and somehow i have to decrypt with a
>> CAM+Card paired to each  > other.  Of  course  i know that the
>> decryption is only possible if the  > Smartcard  has  the  authorization
>> in those date ranges when the files  > was recorded. I have seen this
>> kind of solution in Windows, but i need  > it on Linux now.
>> 
>> Yes, you can do that, but only if the hardware supports it. Most cards
>> with CAM/CI are hardwired in such a way that the transport stream comes
>> from the demodulator, goes through the CAM/CI and then into the PCIe/PCI
>> bridge. There are only a few cards where you can send a TS from memory
>> to the CAM/CI and back.
>> 
>> -Ralph
>> 
>> 

> The "Octopus CI" from "Digital Devices" is the only one I know where you can
> input the TS stream directly to the CAM:
> http://shop.digital-devices.de/epages/62357162.sf/en_GB/?ViewObjectID=370117
> 11

Is  this  the  only  solution?  I need s2 tuner and IP input (from the
motherboard's  Ethernet)  and  record  them to file splices. Then (for
request)  i  have to decrypt one or more ES from the recorded file and
push them back. It's a DVB monitoring solution.

thanks
Balazs