copyright and technology london 2012: multiplatform video security - alec main, nagra

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DRM Implementation ChallengesAlec Main, Vice President Multi-Device DRM

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Content Security Challenges

Protocol vs. “Robust” Implementation

Standard vs. Proprietary

One DRM vs. Multi-DRM

Free vs. Supported

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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%

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Legal Actions: Nagra shuts down services

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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?