Timothy Normand Miller wrote:
On 2/22/07, James Richard Tyrer <[EMAIL PROTECTED]> wrote:
Is it a reasonable idea to try to figure out a way to play HD-DVDs
on an Open Source Software OS? I think that this is possible and
it would be much more secure than M$ Vista.
[snip]
I'm not saying that anything you're suggesting is illegal (because I
don't know), but some of this is a touchy area. If we're suspected
of trying to subvert the DMCA or something like that, we could get
into a lot of trouble. If we're going to do something that involves
any kind of DRM in any way that isn't crystal clear within the law,
we're going to run it by a team of lawyers first.
Traversal can't stop other hardware hackers from making hardware that
breaks the law, but we can have nothing to do with it. This is all
for the safety of the project. We're going to be very careful. We
may not like the law, but somehow, I think the OGP might suffer at
least a small loss if Howard, Andy, or I ended up in jail, or we were
fined out of business or whatever.
I should be clear. I am not suggesting that we do anything which would
violate either license. I want to find a solution that the AACS and
HDCP people would be completely and totally happy with. I say this in
the context that they must be really unhappy with Windows at this point.
I think that some unknown hacker said:
"If it is software, it can be broken".
So, I suggest that we use hardware (and firmware) for DRM.
I believe that my outline would be sufficiently robust to meet the
requirements of the licenses. In fact I believe that it would be much
more secure than Windows which relies on system software for DRM. I
would not rely on system software but rather on firmware running on two
MCUs on the boards.
There are some details connected with audio that I didn't include that
need to be added (the boards would also have to do audio in conjunction
with the system's sound card). This is needed because HDMI has audio
and because the DRM flags are encoded in the audio as watermarks.
The requirements of the licenses are not that it is impossible to
circumvent a piece of hardware, only that you would have to be an
electronics professional to do so or to access signals that are not on a
consumer accessible bus. The only possible issues are whether or not
the I2C bus would be considered to be a consumer accessible bus and
whether it would be OK to flash or IPL the video decoder card for the
content decompression software. These could be addressed.
IAC, it is only an idea.
I also note that I read the license to see about copying and I find that
it is not _yet_ allowed for AACS protected content so that solves that
problem for now.
--
JRT
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