Overview
IEC TS 62224:2013 - Multimedia home server systems - Conceptual model for digital rights management - is an IEC Technical Specification that defines a conceptual model and protocol-level guidance for exchanging license information between DRM modules in home server and multimedia environments. The second edition (2013) replaces the 2007 edition and focuses on interoperable, PKI-based DRM architectures to protect and manage digital licenses across devices and networks.
This specification is normative for conceptual models rather than implementation code. It addresses threats, evaluation criteria and standard models useful for secure license exchange in consumer and distributed content systems.
Key Topics and Requirements
- License service model: conceptualization of license lifecycle, access conditions and threat/countermeasure analysis for content usage.
- Security model: PKI-based protections, classification of certification authorities, TREM (trusted rights execution module) functions and key management requirements.
- Secure License Transaction Protocol (SLTP): protocol model for license exchange; the 2013 edition adds the Diffie–Hellman method as an option for key agreement.
- Interconnection model: license relay and inter-DRM communication (including the License Relay Protocol, LRP) to enable cross-system content use.
- License information model: structure and semantics of digital rights permissions and encrypted content descriptors.
- Operational security: key revocation, termination of trusted modules, and evaluation criteria aligned with information security practices.
- Notable editorial/technical changes in edition 2: Diffie–Hellman added to SLTP, Protected Content Format (PCF) model removed, description related to IEC 62227 added, and certification authority classification included.
Applications
- Design and evaluation of DRM systems for home servers, media gateways, set-top boxes and consumer electronics.
- Enabling interoperable license exchange between different DRM modules across networks, mobile devices, PCs and automotive systems.
- Guidance for content distributors and service providers seeking standard approaches to license issuance, relay and enforcement.
- Security architects implementing PKI, certificate policies, key revocation and secure transaction protocols for content protection.
Who Uses This Standard
- DRM architects and developers
- Consumer electronics and home server manufacturers
- Content distributors and OTT service operators
- Security engineers and system integrators working on PKI-based DRM
- Standards bodies and testing/ certification organizations evaluating DRM interoperability
Related Standards
- IEC 62227 - Digital rights permission code (referenced/linked in this edition)
- ISO/IEC 9594-8 / X.509 and RFC 3280 - PKI and certificate frameworks
- ISO/IEC 15408 (Common Criteria) - security evaluation concepts
Keywords: IEC TS 62224:2013, DRM, multimedia home server systems, SLTP, Diffie–Hellman, license exchange, PKI, certification authority, LRP, digital rights management.