[p2p-research] DRM standards

[Hervé Le Crosnier]

	Hello,

	ODRL is not a DRM cryptoghraphic system, but
	a way to embed regulation in a XML format.

	So you can tell people what they are allowed to do.
	Then, or they respect those prescription, or a
	DRM system will make it mandatory.

	But the problem is as old as any way to reduce
	human complexity to simple logical rules : if justice
	is to exists, it can only be a human jugdment...

	So rules are to be simple, with no limitiation or
	exception... but as far as you get a look to laws
	concerning creativity, art, knowledge, intellectual work...
	You will find limitation and exception that are the very core
	of the possiblity to build a society with some
	kind of knowledge (an emotional) sharing.

	What does a library have to do with simple "logical laws"
	and DRM ?

	If computer can help humanity to find justice, i suppose
	some will let us know :-))

Hervé Le Crosnier



Michel Bauwens a écrit :
> Thank you Henrik for your very cogent analysis.
> 
> I hope you don't mind that I use your quotes for an entry on Open DRM?
> 
> Michel
> 
> 
> On Dec 26, 2007 1:31 AM, Henrik Ingo < henrik.ingo at avoinelama.fi
> <mailto:henrik.ingo at avoinelama.fi>> wrote:
> 
>     On Dec 24, 2007 8:11 AM, Michel Bauwens < michelsub2004 at gmail.com
>     <mailto:michelsub2004 at gmail.com>> wrote:
>     > any commentary on this:
>     >
>     > http://www.xrml.org/about.asp
>     > http://p2pfoundation.net/Open_Digital_Rights_Language
>     >
>     > just wondering how drm related 'open standards' should be judged?
> 
>     I think the following short rule of thumb is a good start: For various
>     "ethics related" reasons one may be opposed to all DRM on principle.
>     On the other hand, if someone is going to use DRM, it is clearly
>     better that they'd use an open standard - then at least there is a
>     chance that the DRM is not a reason to make the content locked into a
>     proprietary one-vendor/one-platform solution. (Richard Stallman would
>     disagree with this opinion, saying that DRM is always a form of
>     oppression and producing a good system of oppression is actually worse
>     than a bad system.)
> 
> 
>     In practice even open standards DRM will always have to rely on
>     something being kept secret from the end user / consumer and therefore
>     the opennes is of questionable value to the end user, who's role is
>     restricted to being just a consumer.
> 
>     Typically an open source content player is not a possibility, or at
>     least some library file providing the particular decryption functions
>     would have to be closed source. This because even if the DRM system
>     would be based on an open standard, at least some cryptographic keys
>     have to be hidden from the user. Other alternatives are to hide the
>     decryption component in some hardware, like a smartcard or the
>     infamous TPM chip on a motherboard. Even so, something is restricted
>     from the end user, this is just another place to hide it. In addition
>     to hiding the decryption function, a proper DRM also wants to protect
>     the path from decryption to output device (so that you couldn't copy
>     the content anywhere within that path). This is why DVDs will play
>     with lower resolution on Windows Vista unless you have a new monitor
>     that will give the proper responses in this game.
> 
>     From this discussion it is possible to argue that by traditional
>     cryptographical standards "good" DRM is actually an impossible problem
>     to solve. While good cryptography always relies on the protocol being
>     public and only a key being secret, the problem DRM tries to solve
>     necessarily leads to solutions that by cryptographical standards would
>     be considered ugly hacks. Hardware based solutions are slightly better
>     in this regard, since extracting the secret from a hardware chip
>     really would be practically impossible. Nevertheless from a
>     cryptographical point of view DRM is like eating the cake (giving user
>     content) and trying to keep it too (not giving user content).
> 
>     So in practice an open DRM system will always be like "doing the wrong
>     thing the right way".
> 
>     henrik
> 
>     --
>     email: henrik.ingo at avoinelama.fi <mailto:henrik.ingo at avoinelama.fi>
>     tel:   +358-40-5697354
>     www:   www.avoinelama.fi/~hingo <http://www.avoinelama.fi/%7Ehingo>
>     book:  www.openlife.cc <http://www.openlife.cc>
> 
> 
> 
> 
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