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Security and DRM Joseph Chou Texas Instruments IETF 60 PERM BOF 1 - PowerPoint PPT Presentation

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Security and DRM Joseph Chou Texas Instruments IETF 60 PERM BOF 1 Security and DRM DRM is Based on Security Principals Authentication (device, user, service) Key management, data encryption and signature for data confidentiality

  1. Security and DRM Joseph Chou Texas Instruments IETF 60 PERM BOF 1

  2. Security and DRM  DRM is Based on Security Principals  Authentication (device, user, service)  Key management, data encryption and signature for data confidentiality and integrity  Secured delivery of premium content usage rights  Can be used for personal content protection  DRM Interoperability is Needed  PERM Interoperability Framework 2

  3. Issues with DRM System Diversity  Lack of a unified and open DRM system standard for PC, CE and mobile handheld devices for broadcast, internet and packaged content interoperability  Current DRM system implementations are not interoperable  Diversity of smart card/CI implementations  Diversity of internet DRM system implementations  Diversity of packaged media content protection implementations  Mismatches between different trust and protection models  Mismatches between rights expression languages  Consumer devices cannot locate and connect to all needed services/content 3

  4. Diversity of Security, Content Protection/DRM Implementations Pre-recorded/Recordable content (DVD, DVD-Audio)   CSS CSS (Prerecorded DVD)   CPPM CPPM (Prerecorded Audio)   CPRM CPRM (Recordable Audio/Video)  Internet streaming audio/video content   Various Various DRMs DRMs  WM DRM 10, Fairplay, Real, Open Magic Gate, OMA, SDMI and etc.  Broadcast content   Smart Card Smart Card DRMs DRMs   DigiCipher, Cable Card ITU-T SG9, DVB-CSA, DirectTV, Multi-2, NDS (ICAM), Irdeto, Nagra, DVB Content Protection and Copy Management (CPCM) and many others. Between media client and TV/display   HDCP HDCP (HDMI/DVI)   DTCP/1394/USB DTCP/1394/USB (1394/USB)   Macrovision Macrovision (analog TV)  4

  5. Rationales of DRM Interoperability Framework  Users are able to locate and connect to the content services that they need  A security protocol can be used to protect personal contents or clear contents from the original content owners  An open DRM interoperability standard accelerates content consumption in the home network and propels device volume growth and thus benefits the consumers, the content owners and the device manufacturers 5

  6. DRM Interoperability CSS/CPPM CSS/CPPM Smart Card Smart Card HDCP(HDMI/DVI) HDCP(HDMI/DVI) Broadcast DTCP(1394) DTCP(1394) Smart Card Smart Card BB STB/PVR DVD/MPEG4 In the Living Room Cable, Satellite, CSS/ CSS/ CSS/CPPM CSS/CPPM Terrestrial CPRM/CPPM CPRM/CPPM Need DRM Need DRM STB Transcryption Transcryption DTV Based on Based on Game Console DVD/PVR Security Security In the Living Room Principals Principals Various DRMs Various DRMs* * Macrovision Macrovision Pre-packaged/ Various DRMs DRMs* * Various Personal Media Various DRMs DRMs* * Various DVD, CD,… PERM Media Player Analog TV PC in the Den Various Various DRMs DRMs* * Direct DSL, CM Internet Broadband Mobile/Handheld Access Source Access Media Server HNET Bridge Client AV Cable A/V Device Authentication Encryption Integrity 6

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