210004 IPMP Components

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21000-4IPMP Components

• Poznan

July 2005
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Why do we need IPMP Components?

• We need a way to include protected and governed
  content in an MPEG-21 Digital Item

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What is IPMP Components

• A way to include protected content in an MPEG-21
  DID document
• IPMP DIDL
• The IPMP DIDL encapsulates and protects a part of
  the hierarchy of a Digital Item, and associates
  appropriate identification and protection
  information with it. The description of IPMP
  governance and tools is required to satisfy IPMP
  for a Digital Item or its parts to be accessed
• A way to provide information about the protection
  of elements in a Digital Item
• IPMP General Information
• IPMP Information
• IPMP Information defines structures for
  expressing information relating to the protection
  of content, including tools, mechanisms and
  licenses

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IPMP Components is NOT

• A full IPMP (DRM) system
• It purposely does not specify
• protection measures,
• keys,
• key management,
• trust management,
• encryption algorithms,
• certification infrastructures
• or other components that would also be needed as
  part of a complete IPMP solution.
• On its own it wont make IPMP systems
  interoperable, however
• It allows terminals (peers) to be able to
  understand how to process protected content.
• With the right rights (and business agreements)
  it will permit inter-working between systems.

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IPMP DIDL

• IPMP Components provides an alternative normative
  Representation for parts of Digital Items that
  require protection through IPMP governance.
• This Representation is termed the IPMP Digital
  Item Declaration Language (IPMP DIDL), and
  defines governed XML elements corresponding to
  entities in the DID model.
• Each of these IPMP DIDL elements is intended to
  link a corresponding DIDL element (which may be
  encrypted) with information about the governance,
  so that the Digital Item or part of Digital Item
  thus represented is used in accordance with the
  Digital Item authors wishes.

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Derivation of IPMPDIDL

• IPMP DIDL is derived from the abstract DID model
• Imports DIDL
• No change for non-IPMP peers

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IPMPDIDL elements

• Each of the IPMP DIDL elements above contains
  identical structure.
• a maximum of one ipmpdidlIdentifier element,
  into which an appropriate identifier for the
  protected Representation may be placed
• one ipmpdidlInfo element, into which information
  about the governance is placed
• one ipmpdidlContents element, into which the
  governed contents is placed

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IPMP Information

• IPMP General Info Descriptor
• Contains general information about IPMP tools and
  rights expressions relating to a complete DID.
• IPMP Info Descriptor
• Contains the description of IPMP governance and
  tools relating to a particular required to
  satisfy intellectual property management and
  protection for a Digital Item or its parts to be
  accessed. The root element for IPMP Information
  Descriptor schema is IPMPInfoDescriptor, which
  contains a range of information related to IPMP
  governance and tools.

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IPMP Information

• IPMPInfoDescriptior conveys information on
  protection and governance
• Allows specification of particular tools, with
  settings, rights descriptions and signatures

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IPMP Information

• Rights descriptor allows for a license to be
  included, referred to, a service to be
  referenced.
• Signature block allows signing of components for
  integrity.

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Protected DI processing

• With the correct tools an IPMP DIDL can be
  transformed into a standard DIDL element (or vice
  versa)

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Example (1)

• Basic DI containing an Identifier and an image

• ltItemgt
• ltDescriptorgt
• ltStatement mimeType"text/plain"gt
• ltdiiIdentifiergtIPMPid0001lt/diiIdentifiergt
• lt/Statementgt
• lt/Descriptorgt
• ltComponentgt
• ltResource ref"myPicture.png"
  mimeType"image/png"/gt
• lt/Componentgt
• lt/Itemgt

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Example (2)

• Encapsulated in IPMP DIDL

• ltipmpdidlItemgt
• ltipmpdidlIdentifiergt
• ltdiiIdentifiergtIPMPid0001lt/diiIdentifiergt
• lt/ipmpdidlIdentifiergt
• ltipmpdidlInfogt...lt/ipmpdidlInfogt
• ltipmpdidlContentsgt
• ltItemgt
• ltDescriptorgt
• ltStatement mimeType"text/plain"gt
• ltdiiIdentifiergtIPMPid0001lt/diiIdentifiergt
  
• lt/Statementgt
• lt/Descriptorgt
• ltComponentgt
• ltResource ref"myPicture.png"
  mimeType"image/png"/gt
• lt/Componentgt
• lt/Itemgt
• lt/ipmpdidlContentsgt
• lt/ipmpdidlItemgt

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Example (3)

• The ipmpdidlContents may be encrypted, with a
  tool described in ipmpdidlInfo.
• In this case the structure and contents of
  ipmpdidlContents will not be visible.

• ltipmpdidlItemgt
• ltipmpdidlIdentifiergt
• ltdiiIdentifiergtIPMPid0001lt/diiIdentifiergt
• lt/ipmpdidlIdentifiergt
• ltipmpdidlInfogt...lt/ipmpdidlInfogt
• ltipmpdidlContentsgt3E674F632A56BD56...lt/ipmpdid
  lContentsgt
• lt/ipmpdidlItemgt

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Questions?