Re: CI/CAM support for offline (from file) decoding
-Original Message- From: linux-media-ow...@vger.kernel.org [mailto:linux-media- ow...@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 -- To unsubscribe from this list: send the line unsubscribe linux-media in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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. Can you suggest some kind of hardware? -Ralph -- To unsubscribe from this list: send the line unsubscribe linux-media in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line unsubscribe linux-media in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
CI/CAM support for offline (from file) decoding
Hi all! I'm in a project and it stopped because of a problem, what we can't understand and solve: we have several full TS recorded to HDD and we want to decrypt some ES from it (video/audio PIDs). Is it possible via the Linux DVB API? I've chipset paired CAM and smartcard in a TT 3200 + CI slot. thank you for the answers basq -- To unsubscribe from this list: send the line unsubscribe linux-media in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: CI/CAM support for offline (from file) decoding
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. Thank you, Balazs Kovacs I think more feasible way (than using linux kernel DVB layer) is using SoftwareCAM with SmartCard reader. Some solution should be also implemented in STB, which save records in encrypted state. -- Marek Ochaba -- To unsubscribe from this list: send the line unsubscribe linux-media in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
