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Date: Sat, 3 Jun 2006 00:04:15 -0400
From: Ruben Safir
Subject: [NYLXS - HANGOUT] DRM in every Laptop
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Yes, Trusted Computing Is Used For DRM
By Andy Dornan
Feb 17, 2006 at 04:19 PM ET
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Ever since the Trusted Computing Group went public about its plan to put a security chip inside every PC, its members have been denying accusations that the group is really a thinly disguised conspiracy to embed DRM everywhere. IBM and Microsoft have instead stressed genuinely useful applications, like signing programs to be certain they donâ€™t contain a rootkit. But at this weekâ€™s RSA show, Lenovo showed off a system that does use the chips for DRM after all.
The system is particularly frightening because it looks so simple. Thereâ€™s no 20-digit software key to type in, no dongle to attach to the printer port, no XP-style activation. (Is this what Bill Gates was thinking of when he said in his keynote that security needs to be easier to use?) The user interface is just a Thinkpad, albeit one of the new models with an integrated fingerprint sensor.
When someone tries to open a DRM-restricted document (in this case, a PDF file: break that DRM and go to jail), Lenovo software asks the user to swipe a finger across the sensor. My finger results in an access denied message; the Lenovo security guyâ€™s finger opens the document.
If youâ€™ve ever had a laptop stolen, this might sound useful. It is. In fact, encrypting hard disks or individual files is the main use that most vendors are promoting for the chip. Thinkpads have been able to do that since their IBM days, and now most other laptops can too. You can probably try it out by downloading software from your laptop manufacturerâ€™s site, and Microsoft is building similar functionality into Vista as Palladium NGSCB Secure Startup BitLocker.
The fingerprint sensor is also a good thing, if itâ€™s just used for encryption. Itâ€™s even good for privacy: It means that network servers can authenticate you based on your fingerprint, without sending any fingerprint data over the network. (How? You authenticate to the chip in your laptop with your fingerprint, then the chip authenticates to the server with a digital certificate.)
But DRM goes beyond encryption. In the system that Lenovo demonstrated, the decision about who can do what with the file is made by whoever generates the PDF, not by the person or organization that owns the laptop. According to Lenovo, the system is also aimed at tracking who reads a document and when, because the chip can report back every access attempt. If you access the file, your fingerprint is recorded.
That might also sound useful, provided of course that youâ€™re the one doing the recording and restricting. (Iâ€™d love to be Big Brother! Wouldnâ€™t we all?) The problem is that you wonâ€™t be. Even if we forget about media companies for the moment, and assume that DRM is just for businesses that need to protect their sensitive documents from disclosure by employees or outsourcing partners, itâ€™s still a bad tradeoff.
A DRM system may seem to empower whoever is setting the restrictions (in this case, the PDF creator), but thatâ€™s just power by proxy. The real control lies with the hardware and software companies. Theyâ€™re the ones who actually enforce the DRM and have the encryption keys, so they can hold your data to ransom.
DRM customers are already locked into a single vendor: A DRM-restricted Word document can only be read by Word (not OO.org, WordPerfect or Writely), just as a DRM-restricted iTunes download can only be played on an iPod. Present versions of Word and iTunes still let customers escape by using the Windows clipboard or a CD burner, but that capability can be removed at any time.
Relying on DRM means trusting all the vendors involved (in this case, Microsoft, Adobe, Lenovo and its component suppliers) more than you trust the users of the system. You need to trust the vendors both morally and practically: Can Microsoft be trusted not to abuse its power? And can Microsoft be trusted to develop a system that isnâ€™t full of security holes?
If youâ€™re a movie studio or a record label, the users are your customers. You probably do trust Microsoft and the TCG more than your customers, so DRM might make sense. But if youâ€™re an organization seeking to protect sensitive data, the users are your own employees and business partners. Are they really less trustworthy than Microsoft, its employees and its business partners?
Topics: Consumer/Personal Tech : Hardware : Security : Windows/Microsoft
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