GY/T 334-2020 in English
VALIDDigital rights management for video audio content distribution—Digital rights management system integration for digital cable television
- Issued on:2020-11-09
- Implemented on:2020-11-09
- File Format:PDF
- Delivery:Via email within 1~3 business days
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| Standard No: | GY/T 334-2020 |
| Document status: | VALID |
| Title in English: | Digital rights management for video audio content distribution—Digital rights management system integration for digital cable television |
| Title in Chinese: | 视音频内容分发数字版权管理 互联网电视数字版权管理系统集成 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Via email within 1~3 business days |
| Issued on: | 2020-11-09 |
| Implemented on: | 2020-11-09 |
| Professional Classification: | GY-Radio, Film and TV |
| Related Keywords: | video audio content distribution digital rights management system integration
key management system drm system integration digital rights management digital cable television introduction standard background |
| Related Topics: | copyright
system integration right Mechanism content distribution See Part of the video /right system integration standards |
本文件规定了有线数字电视DRM系统集成框架、内容加密、密钥管理、内容授权及终端集成等核心机制与接口协议。
本文件适用于有线数字电视DRM系统集成部署与实施。
Introduction
Standard Background and Industry Significance
With the rapid development of Internet TV services, GY/T 334-2020, as a special standard issued by the State Administration of Radio, Film and Television, fills the gap in the specification of DRM system integration in the OTT field. This standard forms a technical system with GY/T 277-2019, and proposes feasible implementation plans for core links such as content encryption and key management.
Core Framework Analysis
The integration framework defined in Chapter 5 of the standard includes three core modules:
| Module | Functional Requirements | Technical Interface |
|---|---|---|
| Content Encryption System | Support Cloud/Content Party Dual Encryption Mode | Complies with GY/T 333-2020 6.3 |
| Key Management System | Key Generation and Synchronization Gateway | GY/T 333-2020 7.2 |
| DRM Client | TEE/White Box Cryptography Dual Environment Support | GY/T 277-2019 Appendix C |
Key Technical Requirements
1. Content Encryption Mechanism
Chapter 6 of the standard stipulates that the encryption process must follow:
- Key application: Dynamically apply to the key management system through the unique content identifier
- Dual-path encryption: Support encryption by the operation system or content provider
- Audit closed loop: Encrypted content must be decrypted and verified by the audit system
2. Client Security Integration
Taking a certain brand of smart TV as an example, its DRM client integration must meet the following requirements:
- Pre-set client certificate in hardware-level TEE environment
- Implement the 11 core interfaces defined in Appendix C of the standard
- Support online certificate update (OCSP) mechanism
Implementation Suggestions
Key Points for System Deployment
It is recommended to adopt a phased implementation strategy:
| Phase | Work Content | Acceptance Indicators |
|---|---|---|
| Phase I | Establish a key management hub | Support 1000+ key requests per second |
| Phase II | Client compatibility transformation | Pass FIPS 140-2 certification |
| Phase III | Full-link stress testing | 99.99% system availability |
Frequently Asked Questions Avoidance
- Key synchronization delay: It is recommended to deploy a multi-level cache gateway
- Terminal compatibility issues: It is necessary to establish a DRM capability classification matrix
- Certificate revocation management: Enabling the CRL checking mechanism is mandatory
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