IP: Content protection plan targets wireless home networks (fwd)

Eugene Leitl Eugene.Leitl@lrz.uni-muenchen.de
Tue, 15 Jan 2002 10:51:05 +0100 (MET)


-- Eugen* Leitl <a href="http://leitl.org">leitl</a>
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---------- Forwarded message ----------
Date: Tue, 15 Jan 2002 00:55:01 -0500
From: David Farber <dave@farber.net>
Reply-To: farber@cis.upenn.edu
To: ip-sub-1@majordomo.pobox.com
Subject: IP: Content protection plan targets wireless home networks


>From: Dewayne Hendricks <dewayne@warpspeed.com>
>
>
>[Note:  This item comes from reader Tim Pozar.  DLH]
>
>At 10:55 -0800 1/14/02, Tim Pozar wrote:
>>From: Tim Pozar <pozar@lns.com>
>>To: dewayne@warpspeed.com
>>Subject: Content protection plan targets wireless home networks
>>Date: Mon, 14 Jan 2002 10:55:43 -0800
>>MIME-Version: 1.0
>>
>>Seems like 802.11 evil for Digital Rights Management...
>>
>>Tim
>>--
>>Content protection plan targets wireless home networks
>>By Junko Yoshida, EE Times
>>Jan 11, 2002 (12:01 PM)
>>URL: <http://www.eetimes.com/story/OEG20020111S0060>
>>
>>LAS VEGAS - Philips is leading the charge to start yet another
>>industry initiative to tackle digital rights management, this time
>>focusing on the wirelessly networked home, EE Times has learned.
>>
>>At stake here, said Leon Husson, executive vice president of consumer
>>businesses at Philips Semiconductors, is the "free-floating"
>>copyrighted content that will soon be "redistributed" or "rebroadcast"
>>to different TV sets throughout a home by consumers using wireless
>>networking technologies like IEEE 802.11.
>>
>>Rather than wait for Hollywood studios to raise a red flag over
>>unprotected wirelessly transmitted content, some technology companies
>>want to tackle the issue in advance and develop solutions together
>>with content owners.
>>
>>"We are dying to lobby Hollywood studios on this issue," Husson
>>said in an interview here. Philips Semiconductors has been discussing
>>the issue with companies like Sony and Samsung, he said, and expected
>>to have "high-level meetings with Thomson Multimedia" this week.
>>Philips has also had a preliminary, "very interesting conversation"
>>with Cisco Systems Inc., he added. The goal of the Philips-led
>>emerging industry initiative is to come up with "the first concrete
>>proposal" that can be taken to Hollywood soon.
>>
>>One existing specification, called Digital Transmission Content
>>Protection (DTCP), defines a cryptographic protocol for safeguarding
>>audio/video entertainment content against illegal copying, intercepting
>>and tampering as it traverses high-performance digital buses, such
>>as the IEEE 1394 standard. But when DTCP was developed by 5C - a
>>group comprising Intel Corp., Hitachi Ltd., Sony Corp., Toshiba
>>Corp. and Matsushita Electric Industrial Co. - "the notion for the
>>wireless-connected home was not there," said Husson. Other approaches
>>to content protection don't necessarily ignore wireless transmission,
>>but Philips is actively focusing on that transmission approach, he
>>added.
>>
>>Now that many consumer electronics companies are beginning to see
>>wireless home networking as the wave of the future, developing a
>>possible solution for copy protection and digital rights management
>>over the wirelessly connected home has gained "a sense of urgency,"
>>Husson said.
>>
>>Trying to apply the DTCP - which requires high-speed encryption and
>>decryption at every digital interface - over a wireless network is
>>not easy, said Husson. It could not only slow down the wireless
>>transmission, but also tax the computing power locally available
>>in digital consumer appliances.
>>
>>Cisco's scheme
>>
>>A number of consumer electronics and Internet technology companies
>>have diverging ideas on how to implement digital rights management
>>(DRM) in digital consumer appliances.
>>
>>For its part, Cisco released last fall Open Conditional Content
>>Access Management (Occam), an end-to-end content encryption and
>>access control technology specification, designed for implementation
>>in hardware for interactive television and portable network devices.
>>The technology incorporates a key management facility that uses the
>>128-bit Advanced Encryption Standard and 1,024-bit public-key
>>encryption.
>>
>>While Cisco hopes to get network service providers and device
>>manufacturers to use its DRM protocol and key management, some
>>consumer companies, including Philips, don't believe the proposal
>>meets the industry's needs. In the Occam proposal, Husson said,
>>"Cisco wants each digital device within the home to have a separate
>>IP [Internet Protocol] address. That means if you have 20 connected
>>consumer devices at home, you'd have to deal with 20 different IPs."
>>That may be a good scheme for Cisco, which wants to play a pivotal
>>role in promoting its Internet routers, but it won't make life any
>>easier for the consumer electronics manufacturer, Husson said.
>>
>>If Cisco's proposal sits at one extreme among various DRM schemes,
>>Thomson Multimedia's proposed SmartRight copy protection and content
>>management system may sit at the opposite end.  Thomson Multimedia
>>and Micronas this week demonstrated smart card-based SmartRight
>>technology at the Consumer Electronics Show in Las Vegas.
>>
>>Olivier Lafaye, general manager of advanced projects, content
>>protection and rights management in Thomson Multimedia's research
>>arm, said that unlike 5C's DTCP, which protects only "the link"
>>between digital devices, the SmartRight system provides "end-to-end
>>copy protection" for content entering a SmartRight-enabled home
>>network. And while DTCP requires re-encryption at every digital
>>device border, SmartRight keeps content encrypted from the time it
>>reaches a digital set-top at home until it is rendered, he said.
>>
>>The SmartRight technology will honor a local "entitlement control
>>message" - such digital rights management rules as copy never or
>>copy once, for example - originally attached to the content.  By
>>putting the SmartRight technology in place, which enforces rights
>>management in the home, said Lafaye, "we can help content owners
>>create a new business revenue model." Content owners, for example,
>>can start charging consumers every time their digital content is
>>re-distributed within the home, or viewed several times during a
>>certain number of days specified by them.
>>
>>Reinhard Steffens, senior marketing manager at Micronas and co-chairman
>>for the copy protection technology group of Europe-based Digital
>>Video Broadcast (DVB), said that because SmartRight uses smart
>>card-based removable security modules, it can provide a more-secure
>>and cost-effective renewable solution if the copy protection scheme
>>is hacked.
>>
>>'Middle-ground' solution
>>
>>Steffens said 23 proposals have been submitted in response to a
>>call from DVB. "We hope to come to a consensus and come up with a
>>preliminary working standard by the end of 2002," he said.
>>
>>But Philips doesn't see SmartRight as the way to go. "If the Occam
>>requires the home network to deal with 20 IPs, for instance, the
>>SmartRight is designed to handle just one node at home," said Husson.
>>Leveraging the technical expertise accumulated by Philips Research,
>>he said, "we hope to create a middle-ground DRM solution that sits
>>between Occam and SmartRight."
>>
>>The proposal Philips wants to hammer out with Sony, Samsung, Cisco
>>and possibly with Thomson Multimedia will focus on the rights-management
>>issues for wireless home networking, said Husson. Further, the group
>>does not regard the DVB as the right forum to push their proposal.
>>Husson said lobbying efforts must start with major content owners.
>>
>>While declining to assign a specific time frame to the discussions
>>with Hollywood, Husson was confident that the industry initiative
>>Philips hopes to launch could soon result in putting a concrete
>>proposal on the table. "There is a high-level awareness among
>>consumer electronics companies that this [rights management over
>>wireless home networking] needs to be resolved quickly."
>

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