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DRM on Linux-Driven Mobile Terminals. Ralf Ewers University of Paderborn [email protected]. Introduction. Mobile Terminals are becoming more and more complex New Operating Systems Windows CE SymbianOS Linux Content provider see new medium. Is Linux capable for selling content?. - PowerPoint PPT Presentation
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DRM on Linux-Driven Mobile TerminalsDRM on Linux-Driven Mobile Terminals
Ralf Ewers
University of Paderborn
Ralf Ewers
University of Paderborn
IntroductionIntroduction
Mobile Terminals are becoming more and more complex
New Operating Systems Windows CE SymbianOS Linux
Content provider see new medium
Mobile Terminals are becoming more and more complex
New Operating Systems Windows CE SymbianOS Linux
Content provider see new medium
Is Linux capable for selling content?
Is Linux capable for selling content?
Need for DRM Need for DRM
“I want to make it clear that DRM is perfectlyfine with Linux.”
Linus Torvalds
Technical Issues 1Technical Issues 1
Technical Issues 2Technical Issues 2
A whole DRM stack Decryption only for registered applications Stack has to be closed
‘Tivoisation’ Firmware lockdown Hardware allows only one version of OS Refuses to boot if OS is changed
A whole DRM stack Decryption only for registered applications Stack has to be closed
‘Tivoisation’ Firmware lockdown Hardware allows only one version of OS Refuses to boot if OS is changed
Political IssuesPolitical Issues
The first approach (DRM stack) is fine The second approach (‘Tivoisation’) is
controversial
The first approach (DRM stack) is fine The second approach (‘Tivoisation’) is
controversial
Political Issues: Four FreedomsPolitical Issues: Four Freedoms
The freedom to run the program, for any purpose The freedom to study how the program works, and
adopt it to your needs The freedom to redistribute copies so you can help
your neighbor The freedom to improve the program, and release
your improvements to the public, so that the whole community benefits
The freedom to run the program, for any purpose The freedom to study how the program works, and
adopt it to your needs The freedom to redistribute copies so you can help
your neighbor The freedom to improve the program, and release
your improvements to the public, so that the whole community benefits
The Free Software Foundation
Political IssuesPolitical Issues
“In other words, tivoisation makes freedom numberone into a shame. Theoretically, ostensibly, the usersare free to modify the software to make it do what theywant, but practically speaking, the freedom is a joke.”
Richard Stallman
Political IssuesPolitical Issues
“I think there are many quite valid reasons to sign(and verify) your kernel images, and while someof the uses for signing are odious, I don’t see anysane way to distinguish between good signers andbad signers.
Linus Torvalds
Standards: Open Mobile AllianceStandards: Open Mobile Alliance
Open Mobile Alliance DRM Mainly used for ring tones and pictures Also capable for music and videos Rights Object defines permissions and
constraints RO is valid for only one mobile agent
Open Mobile Alliance DRM Mainly used for ring tones and pictures Also capable for music and videos Rights Object defines permissions and
constraints RO is valid for only one mobile agent
Standards: Windows Media DRMStandards: Windows Media DRM
Very popular for music and videos Similar to OMA DRM Only one Linux mobile phone announced
so far
Very popular for music and videos Similar to OMA DRM Only one Linux mobile phone announced
so far
Standards: Windows Media DRMStandards: Windows Media DRM
Standards: Other approachesStandards: Other approaches
OMA DRM not suitable for broadcasting DVB-Group works on own DRM standard
Only for DVB-H
Also OMA works on new approach For both DVB-H and DMB
OMA DRM not suitable for broadcasting DVB-Group works on own DRM standard
Only for DVB-H
Also OMA works on new approach For both DVB-H and DMB
Content Providers’ Business Model
Content Providers’ Business Model
Music flat rates are very popular DRM has to be hard to overcome Microsoft DRM is most popular
--> support mainly for such devices
Music flat rates are very popular DRM has to be hard to overcome Microsoft DRM is most popular
--> support mainly for such devices
“The consequences of Linux not supporting DRM would bethat fixed-purpose consumer electronics and PC’s wouldbe the sole entertainment platforms available.”
Jeff Ayars, Real Networks
Terminal Vendor StrategiesTerminal Vendor Strategies
OMA DRM for ring tones and pictures Microsoft DRM or Apple FairPlay?
Microsoft is willing to license. Apple not. According to ABI Research 203 million
Linux-driven mobile phones will be sold until 2012
Own DRM or third party stack? Depends on the trust of the content provider
OMA DRM for ring tones and pictures Microsoft DRM or Apple FairPlay?
Microsoft is willing to license. Apple not. According to ABI Research 203 million
Linux-driven mobile phones will be sold until 2012
Own DRM or third party stack? Depends on the trust of the content provider
ConclusionConclusion
OMA DRM for ring tones and pictures Microsoft DRM for music and videos BUT: Apple has announced to offer EMI’s
music catalog without DRM on iTunes It is yet to be seen which approach will be
used for broadcasting
OMA DRM for ring tones and pictures Microsoft DRM for music and videos BUT: Apple has announced to offer EMI’s
music catalog without DRM on iTunes It is yet to be seen which approach will be
used for broadcasting
Thanks for your AttentionThanks for your Attention
