copyright and technology london 2012: multiplatform video security - alec main, nagra
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© 2011 KUDELSKI GROUP / All rights reserved.
DRM Implementation ChallengesAlec Main, Vice President Multi-Device DRM
22 © 2012 KUDELSKI GROUP / All rights reserved.
Content Security Challenges
Protocol vs. “Robust” Implementation
Standard vs. Proprietary
One DRM vs. Multi-DRM
Free vs. Supported
© 2012 KUDELSKI GROUP / All rights reserved.33
Case Study: Control Word Sharing with DVB
Descrambled
Audio/Video
Scrambled Audio/Video
ECM (encrypted CW)
ECMECM
CW CW
Scrambled Audio/Video
ECM (encrypted CW)
DVB
Why?• DVB Standard• Hardware/Software Interface
MPEG Chipset
Set-top box
Control Word server
Free-To-AirLegit
smart cards
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Actions against illegal content and key sharing
Monitoring
Countermeasures
Legal Actions
Reporting
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Monitoring: There is one huge CCCam CWS network
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Countermeasures Proprietary technical solutions and countermeasures prevent CWS in the future, but still hundreds of thousands of shared legacy smart cards
XXX
34%
XXX
13%NAGRA
13%
XXX
11%
XXX
7%
XXX
7%
XXX
8%
XXX
7%
© 2012 KUDELSKI GROUP / All rights reserved.77
Legal Actions: Nagra shuts down services
© 2012 KUDELSKI GROUP / All rights reserved.88
Content Security Challenges revisited
» OTT/DRM will also face Content Key Sharing
» Who pays the CDN costs?
» Who provides the counter measures?
» Who takes the on-going responsibility for security?