What digital rights management means for blue TV Air

Good article, but what about Linux?

@WalterB

This probably varies from distribution to distribution.

@WalterB wrote:

Good article, but what about Linux?

Linux doesn’t even exist for Swisscom. You can see it well at MyCloud.

As a Linux user, I’ve long since gotten into the habit of using Zattoo on my laptop. Interestingly, they don’t have to use DRM.

@Stephan_76 should, but no one is interested yet. True to the motto “where there is no plaintiff, there is no judge”…

@Stephan_76

Linux has a market share of less than 2% in Switzerland and that is then divided into x different distributions. So it’s only logical that you don’t waste any resources.

@ThomasS

Thank you for all this technical and very interesting information 😀

This will undoubtedly clear up the kabbalistic error message customers sometimes receive 🤔

I have never read anywhere else that HDCP is marketed as end-to-end encryption.

The highlight of end-to-end encryption is that it doesn’t matter how the data gets from A to B, since the decryption is only decrypted at the recipient (here TV, app, web browser) and the other devices only have the encrypted ones See data that you can’t do anything with.

@Stauldoteiy82

Whether “end-to-end encryption” is the 100% accurate description is actually secondary to understanding how something like this is set up. 😉

If you search for [hdcp googled](https://www.google.com/search?q=hdcp&sxsrf=ALiCzsaeDXHg35I54nD4DFyUj__RAzKpiQ%3A1652979510421&ei=NneGYrnW F5Th7_UP4PqM4A0&ved=0ahUKEwi5yabEhOz3AhWU8LsIHWA9A9wQ4dUDCA4&uact=5&oq=hdcp&gs_lcp=Cgdnd3Mtd2l6EAMyBAgjECcyBAgAEEMyB QgAEIAEMgsIABCABBCxAxCDATIFCAAQgAQyBQgAEIAEMgUIABCABDIFCAAQgAQyBQgAEIAEMgUIABCABDoRCC4QgAQQsQMQgwEQxwEQ0QM6BwgAELED EEM6CggAELEDEIMBEEM6CAgAEIAEELEDSgQIQRgASgQIRhgAUABYpglg9gpoAHABeACAAYQBiAGMA5IBAzIuMpgBAKABAcABAQ&sclient=gws-wiz), This text appears very prominently: "HDCP stands for “High-bandwidth Digital Content Protection”, which translates as “protection for digital content with high bandwidth”. The process developed by Intel in 2003 is therefore a type of copy protection."

It’s not primarily about end-to-end encryption, but rather about ensuring that only authorized devices are allowed to pass on and process the transmitted data. If a device reports “I can’t do anything with that” or “huh, what do you want from me?”, the transmission is interrupted; It doesn’t really matter how the data gets from A to B. The source <-> image playback chain must therefore fully support DRM/HDCP.

And viewed this way, one might be inclined to call this end-to-end encryption, because without decryption at the end no image arrives, or at least not one that we would like to see.

@kaetho and what are the respective ends of the end-to-end encryption here?

Technology is already complex enough, but when such false relationships are spread by reputable sources, it is even more difficult to explain to laypeople what the differences are in the various encryptions, for example in messengers.

And as you wrote correctly: With HDCP it doesn’t matter how the data gets from A to B. With end-to-end encryption, however, it doesn’t matter.

@Stauldoteiy82 one end is the TV-Box or the laptop/PC with the “extended arm” up to the image output. The other end is probably somewhere in the Swisscom backend.

But if I interpret your post correctly, you have a pretty good idea of ​​what this could be called instead of end-to-end encryption. Let’s hear it 😉

@Stauldoteiy82

Basically, it doesn’t matter what you call it exactly, because the experts obviously don’t agree on DRM/HDCP either. Some call it copy protection, others call it coding and others call it signal encryption.

It’s best to simply call the child by its name: digital rights management using high-bandwidth digital content protection.

@kaetho exactly this “extended arm” is the indication that it is not end-to-end encryption but that the device on this arm decides what it does with the signal, whether it decrypts it and in which way Quality it is passed on.

With end-to-end encryption, devices between the ends cannot do this.

I took a long coffee break and read up on HDCP, shook my head a lot and saw that the individual HDCP variants are extremely different, which doesn’t make it any easier to use a suitable name.

Personally, I would call it, for example, “playback protection on the player”.

The end-to-end encryption probably bothers me so much because the article by @ThomasS is otherwise very well written and I would like to share it.

In that section I would find “end-to-end protection” more correct.

P.S. It is much more unpleasant to comment on knowledge box articles on a smartphone than on other articles. If we continue to “talk shop”, we should probably do this in a separate post. This doesn’t deter those who find the knowledge box via a search engine.

@Stauldoteiy82

If someone really wants to use the term “encryption”, it might be better called hop-by-hop or node-by-node encryption instead of E2E encryption. But I’m with you, end-to-end protection or end-to-end content protection seems more appropriate to me.

Merci

The Linux kernel has HDCP options for certain graphics cards etc. So it should be possible to compile a kernel that runs HDCP [https://superuser.com/questions/1616548/how-can-i-know-if-hdcp-is-supported-in-my-linux-distribution](https://superuser.com/questions/1616548/ how-can-i-know-if-hdcp-is-supported-in-my-linux-distribution)

All Linux browsers I know need Google’s Widevine for DRM (even the Linux version of Microsoft’s edge). https://bitmovin.com/demos/drm shows what you have. There is also VMP (verified media path). Google search “Widevine VMP Linux” says that Widevine does not support VMP for Linux. An interesting question for Swisscom is: Do you need VMP?

Widevine and DRM are possible with the blue tv competition.

The Firefox Browser Console (Ctrl+Shift+J) shows that it doesn’t work because of DRM. Web Developer Tool shows the error from theo-player.

I’m looking for a solution for Linux. But so far without success. Of course, the non-DRM channels run perfectly in Linux Firefox (DRM also works in Windows Firefox).

@Pliopligriost67

Six months ago I installed Linux Mint as the operating system on an iMAC and used the Firefox browser and was able to access Swisscom TV-Air without any problems.

https://www.linuxmint.com/