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1 Introduction

This protocol is designed to support digital rights management for portable consumer electronic devices. This protocol can be used to enable consumers to experience audio and/or video on portable devices, while still protecting the rights of the content owner.

This protocol enables client devices to locally receive and store DRM licenses and enforce DRM rights and policies. For example, devices leveraging this protocol can maintain play counts, expiration, and metering information. Licenses can be acquired both through a PC with indirect license acquisition, or directly from a content service using direct license acquisition. Examples of client devices where this protocol can be used include:

  • Portable media players

  • Mobile phones

  • PDAs

  • Set top boxes for Internet based video on-demand (VOD) and IPTV services

Sections 1.8, 2, and 3 of this specification are normative and can contain the terms MAY, SHOULD, MUST, MUST NOT, and SHOULD NOT as defined in [RFC2119]. Sections 1.5 and 1.9 are also normative but do not contain those terms. All other sections and examples in this specification are informative.

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