DRM the future of global digital media

8/14/2019 DRM the future of global digital media

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Dig i t a l Righ t s Managem en tDig i t a l Righ t s Managem en t The Fu t u re o f Globa l Dig i t a l MediaThe Fu t u re o f Globa l Dig i t a l Media

( )

Dr. Xin Wang Chief Scientist

ContentGuard, Inc.

December 21, 2003


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Out l ineOut l ine

DRM Concepts

DRM Purposes Why DRM is so important now DRM Technologies, Applications and Standards MPEG REL (Rights Expression Language)Future of Digital Media


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DRM Conc ept sDRM Conc ept s DRMDRM

Digital Assets

Any contents, resources and services in digital domain Digital Rights

Privileges for creating, distributing, using and managing digital assets Digital Rights Management (DRM)

A unified approach to specifying, interpreting,enforcing and managing digital rights throughout the entire life cycle of the assets


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EndEnd --t ot o --End DRM Pro c es sEnd DRM Pro c es s DRMDRM

Play

Consumer

Protectedcontent

R i g h t s &

C o n d i t i o n s

P r i c e s

&

B u s i n e s s m o d e

l s

Author / Artist

Original

content

eTailer / Clearinghouse

Protected

content

Rights &Conditions

Publisher

Protected

content

Rights &Conditions

Prices &Business models

ClearRights &PermissionsDistributeAggregate

Package & Protect SellCreate


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Pur po se s o f DRMPur po se s o f DRM DRMDRM

Not just prevent dishonest people from illegal accessing and sharing digital assets But, more importantly, allow honest people to access more, high quality assets in more convenient fashions And, at the same time, create more markets

for creating, distributing and consuming digital assets


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K ey t o Dig i t a l Med iaK ey t o Dig i t a l Med ia

Digital media IS NOT about

Capture/delivery/presentation technologies or Compression technologies

Digital media IS about Managing and Protecting Intellectual Property (IPMP), also called Digital Rights Management (DRM) so as to enable meaningful businesses.

(Source: The Digital Media Project DMP)


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Why Tim e i s NowWhy Tim e i s Now

Economic Digital media market is huge digital content, delivery services,consumer devices Consumer demand whenever, wherever, & whatever

Politic Chinas participation of WTO 2008 Olympic is around the corner Need to change Chinas image of not respecting IP Advance World s and Chinese IT standards

Technical Networking channels fast, cheap, wireless Media storage cheap and high capacity Standards (e.g., MPEG, AVS) provide high content compression

Marketing Lack of effective DRM systems results in less high-quality content

User experience is not as good as expected


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Consumer Consumer --Sid e DRM Dat af lo wSid e DRM Dat af lo w

usage tracking& reporting

REL-basedauthorization

contentdecryption

watermarkdetection

authenticationuser

interactioncapability

presentation

contentrendering

play, save, email I want to play who are you? do you have right to play?

youve played playing Watermark presents? decrypt using AES

eventreporting

exceptionhandling

playing is authorized player crashed


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DRM Appl ic a t ionsDRM Appl ic a t ions DRMDRM

Digital Entertainment Electronic Commerce

Electronic Books and Publications Digital Libraries Distance Learning Health Record Management Secure Web Services Enterprise management Secure Database Management Trusted Computing Privacy Protection Anything that needs permission, authorization, and access control


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Landsc ape o f St anda rdsLandsc ape o f St anda rds DRMDRM

Horizontal standards( )MPEG ( ): , ,

W3C( ): XML, , , OASIS( ): , , IETF( ): , ,

Vertical standards( )

OeBF, PRISM: , ISMA: TVAnyTime: SMPTE: IEEE e-Learning:

DVB: OMA: (OMA)Content Reference Forum (CRForum): TCPA:


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MPEGMPEG --2 1 Fr am e w o rk2 1 Fr am e w o rk MPEGMPEG --2121

DID - Digital Item Declaration DII - Digital Item Identification IPMP - Intellectual Property Management and Protection REL - Rights Expression Language

RDD - Rights Data Dictionary DIA Digital Item Adaptation

DIP Digital Item Processing

User A User BTransaction/Use/Relationship

Digital Item Authorization/Value Exchange

Terminals & Networks

ContentManagement

and usage

IntellectualProperty

managementandProtection

Digital ItemIdentification

and Description

Digital ItemDeclaration

ContentRepresentation

Event Reporting


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Right s Ex press ion LanguageRigh t s Ex press ion Language

A standard language used to specify rights and their

terms and conditions for distributing and using digital assets

Provide an authorization model to determine if a

principal has the right to perform an action on a resource according to REL expressions

Support many business models in the end-to-end distribution value chain

Enables trusted systems to exchange digital contents

and interoperate for end-to-end DRM


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REL Feat ur esREL Feat ur es RELREL

Comprehensive providing a framework to express rights at different stages of the lifecycle

Generic defining a large body of format and business neutral terms and using therm to

specify rights for any digital content and service

Precise developing a formal grammar, rigorous semantics, and processing rules that

enable precise and unambiguous interpretation of the language

Agnostic To platform, type or format of content or service

Extensible defining a core structure as the basis for extension using the XML Schema

extensibility mechanisms


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Aut hor iza t ion in DRMAut hor iza t ion in DRM DRMDRM

Can Alice playthis .mp3 file?

Under whatcondition?

Accordingto whom?


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RELREL --Based Au t hor iza t ionBased Au t hor iza t ion RELREL

anyone can play

mySong.mp3 in Dec2003, Bob says.

REL

Licenses

AuthorizationQuery

AuthorizationResponse

RELAuthorization

Engine

Can Alice playmySong .mp3?

Yes, accordingto Bob.

Context

InformationCurrent time is

2003-12-21T10:00:00


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REL Dat a M ode lREL Dat a M ode l RELREL

A license conveys that an issuer authorizes rights in the forms of grants.

License

Grant Issuer

Principal Right Resource Condition

A grant specifies that a principal has a right over a resource under certain conditions.


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A Sim ple REL Lic enseA Sim ple REL Lic ense RELREL

< license > < grant >

< keyHolde r licensePartId=" Alice "> oRUTUiTQk AQABAA==

< mx:play /> < mx:diReference >

< mx:identifier>urn:PDQRecords:song:WhenTheThistleBlooms.mp3

< validityInterval > < notBefore>2003-12-01T00:00:00 < notAfter>2003-12-31T23:59:59

< issuer licensePartId= Bob > zIRYaxl5EX /dsig:SignatureValue> yQ==

AQAB==

Alice can play a song in December 2003


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REL Prede f ine d Elem ent sREL Prede f ine d Elem ent s RELREL

Principal

keyHolder, allPrincipal Right play, print, modify, adapt, issue, obtain, revoke

Resource diReference, digitalResource,

Condition

validityInterval, exerciseLimit, flatFee, perUseFee,


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Typic a l REL L ic ensesTyp ic a l REL L ic enses RELREL

End-user license

rights to play , print, modify , Attribute license (certificate)

right to possessPropertyDistribution license

right to issue other rights Offer license

right to obtain other rights Revocation license

right to revoke other rights


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REL Advanc ed Fea t u resREL Advanc ed Fea t u res RELREL

Variable Flexibility to specify an element instance at the time of exercising

right (i.e., not at the time of specifying a right)Pattern

Capability of specifying a set of element instances according to some rules

Service Reference Encapsulation of information necessary to interact with a service.Usefulness for stateful conditions.

Delegation Allowance and control on how rights can be delegated and transferred.


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M u l t iM u l t i --t i e r Di s t r i bu t i o nt i e r Di s t r i bu t i o n

grantissuegrant

$x each time

grantplaycontentfor 30 days

Distributor ConsumerContent

Owner

Distr.LicenseDistr.

LicenseUsage

LicenseUsage

License


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La t e B ind ing in Di s t r i bu t ionLa t e B inding in Di s t r i bu t ion

grant

forAll Xdistributor ABCissue

grantX

playcontent

grantAliceplaycontent

variable is resolved

Distributor ConsumerContentOwner

Distr.

License

Distr.License

Usage

License

UsageLicense


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REL Language Arc h i t ec t u reREL Language Arc h i t ec t u re RELREL

CORECORE

StandardExtension

StandardExtension

OtherExtension

OtherExtension

Grammar

Vocabulary

C o m m o n

I n d u s t r y

S p

e c i f i c

MediaExtension

XML StandardsXML Standards

MediaExtension

XML DsigXML EncryptionXPATHWSDLUDDIXML Schema


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REL Suppo r t ed Busi ness Mod elsREL Suppo r t ed Busi ness Mod els

Unlimited usage Flat fee sale Pay per view Preview Promotion Subscription/Members hip Transfer

Gifting Personal lending Library loan Site/volume license

Rent Multi-tier models Territory restricted Component based model

User types based model Payment to multiple rights Holders Super-distribution Composite content


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Fut ure o f Globa l Dig i t a l MediaFu t u re o f Globa l Dig i t a l Media

Content owners decide what,when, where and how their contents to be released

Consumers decide what, when and where to watch

CE vendors manufacture devices with good user interface and features

Service providers provide digital media infrastructure services like telephone, water and electricity


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T h an k YouT h an k You

[email protected]
mailto:[email protected]://www.contentguard.com/http://www.contentguard.com/http://www.contentguard.com/mailto:[email protected]:[email protected]

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DRM the future of global digital media