GY-T 277-2019 视音频内容分发数字版权管理技术规范

GY 中华人民共和国广播电视行业标准 GY/T 277—2019 代替GY/T 277 —2014 视音频内容分发数字版权管理技术规范 Technical specification of digital rights managemen t for video audio content distribution 2019 - 0 7- 05 发布 2019 - 07 - 05 实施国家广播电视总局发布GY/T 277— 2019 I 目次前言 ................................ ................................ ............... III 引言 ................................ ................................ ................ IV 1 范围 ................................ ................................ .............. 1 2 规范性引用文件 ................................ ................................ .... 1 3 术语和定义 ................................ ................................ ........ 2 4 缩略语 ................................ ................................ ............ 3 5 体系架构 ................................ ................................ .......... 3 5.1 概述 ................................ ................................ .......... 4 5.2 逻辑架构 ................................ ................................ ...... 4 5.3 内容授权 ................................ ................................ ...... 4 5.4 密钥管理 ................................ ................................ ...... 6 5.5 安全机制 ................................ ................................ ...... 7 5.6 信任模型 ................................ ................................ ...... 7 6 内容加密 ................................ ................................ .......... 8 6.1 概述 ................................ ................................ .......... 8 6.2 内容加密方法 ................................ ................................ .. 8 6.3 内容封装格式 ................................ ................................ . 13 7 许可证格式 ................................ ................................ ....... 15 7.1 许可证结构 ................................ ................................ ... 15 7.2 许可证编码 ................................ ................................ ... 16 8 许可证获取协议 ................................ ................................ ... 23 8.1 概述 ................................ ................................ ......... 23 8.2 许可证获取请求 ................................ ............................... 23 8.3 许可证获取响应 ................................ ............................... 25 8.4 状态信息 ................................ ................................ ..... 27 8.5 消息签名机制 ................................ ................................ . 27 9 DRM服务端 ................................ ................................ ........ 28 9.1 概述 ................................ ................................ ......... 28 9.2 密钥同步协议 ................................ ................................ . 28 9.3 密钥查询协议 ................................ ................................ . 31 10 DRM客户端 ................................ ................................ ....... 34 10.1 概述 ................................ ................................ ........ 34 10.2 DRM应用模块 ................................ ................................ . 35 10.3 DRM功能模块 ................................ ................................ . 35 10.4 DRM客户端运行环境 ................................ ........................... 35 10.5 DRM功能接口 ................................ ................................ . 36 10.6 DRM客户端运行环境接口 ................................ ....................... 36 GY/T 277 —2019 II 附录A（规范性附录）数字证书格式、在线证书认证协议及证书撤销列表格式 ................ 37 A.1 概述 ................................ ................................ .......... 37 A.2 数字证书格式 ................................ ................................ .. 37 A.3 OCSP协议 ................................ ................................ ..... 45 A.4 证书撤销列表 ................................ ................................ .. 47 附录B（规范性附录）密码算法 ................................ ....................... 49 附录C（规范性附录） DRM客户端功能接口 .............................