ITU-T J.104x(DRM)：The abbreviated form of ITU-T J.1040, J.1041,J.1042,J.1043.
GYT277-2019：The abbreviated name of GY/T 277—2019 Technical specification of digital rights management for video audio content distribution.
CID：Content ID.
CEK：Content Encryption Key.
KID：Key Identifier.
KIV：Key Initial Vector.
Enschema：Encryption schema.
Drm Info：DRM Information, include CID,KID,KIV,Enschema,Drm Server Url, and so on。
CEI：Content Encryption Information, used to carry Drm Info. CEI should be placed in SEI.
SEI：Supplemental enhancement information，It is one of H264 and H265 NAUL.
DRM Descriptor：DRM Descriptor, used to carry Drm Info. It should be put into PMT.
PMT：Program Mapping Table, Video and audio TS packaging adopts.
PSSH：Protection system specific header, It is a standardized container for carrying Drm Info. It could be put into PMT or CEI or stream index file(m3u8/mpd).

DRM security evaluation: refers to the evaluation of DRM technology and products. The evaluation scope includes DRM server components, DRM client runtime environment (three security levels of software, hardware, and enhanced hardware), DRM client devices, DRM client applications, DRM systems, DRM cloud service, and digital watermarking. The security assessment service is provided by ChinaDRM Lab. After the assessment, ChinaDRM Lab will issue an assessment report. The assessment number of the report starts with DRMC, such as DRMC-DCE-HW-ABC-202404-01.

DRM service certification: DRM service certification includes video and audio content DRM service certification, DRM integrated R&D service certification, DRM system operation and maintenance service certification, DRM client device production and manufacturing service certification, etc. The video and audio content platform, DRM technology providers, and device manufacturers have proven through service certification that they have the ability to steadily provide digital rights management (DRM) services that meet customer requirements and applicable laws, regulations, and industry standards. The service certification number starts with DRMC, such as DRMC-YW2401R0M.

DRMC: DRM certification, including security evaluation and DRM service certification.
Get more information at Ecology/Ecosystem Support/Technology and product assessment or DRM service certification.