Free theatrical content-security tools
KdmGen
Protect encrypted theatrical content and navigate the practical work around certificates, DKDMs and Key Delivery Messages.
What KdmGen solves
Give the right cinema player access to the right DCP
A KDM—or Key Delivery Message—protects an encrypted DCP by allowing it to play only on the registered Secure Media Block it targets, and only during the authorised dates.
KdmGen helps producers and engineers find trusted player certificates, diagnose KDM problems and move from a registered CPL and DKDM to the player-specific keys a cinema needs.
Included workflows
From certificate search to KDM delivery
Device certificates
Search and download registered DCI player certificates used to generate KDMs for a DCP/CPL. The catalogue prioritises certificates from authorised cinema-player vendors and makes it easier to identify the certificate representing a target player.
Open Device certificatesCertificate and KDM analysis
Inspect a certificate or KDM, extract its relevant information and, where possible, match a certificate with a registered DCI player. This is useful when troubleshooting KDM delivery and playback issues.
Open Certificate and KDM analysisRegister DCP / CPL
Register a CPL and its DKDM so the system can create player-specific KDMs. The DKDM must target the D-Cine.net public certificate and grants the service authority to generate the required cinema-player KDMs.
Open Register DCP / CPLGenerate KDM
Select one or more registered CPLs, assemble target player certificates directly or through OpenTDL, choose the validity period and generate the KDMs needed by those players.
Open Generate KDMFacilities / OpenTDL
OpenTDL is a community-maintained database of cinemas, facilities and their DCI players. Cinema operators can review and correct facility information when equipment changes or an error is found.
Open Facilities / OpenTDLBackground and help
Useful starting points
These references provide a general DCP overview, industry recommendations and a place to ask wider digital-cinema questions.
- Digital Cinema Package overviewWikipedia introduction to DCP structure and exhibition.
- ISDCF technical documentsIndustry recommendations concerning DCP creation and operation.
- DCP-o-matic forumA useful community for practical digital-cinema questions.
Walk-through videos are planned as time permits. For direct assistance, email support@d-cine.net. Support is handled alongside running cinemas and developing the tools, so replies may not be immediate.
