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Some of the projectors are connected to the DCP playback server via encrypted HD-SDI. The content is link-encrypted between the server and projector using Texa
by sprocket35 10y ago
Some of the projectors are connected to the DCP playback server via encrypted HD-SDI. The content is link-encrypted between the server and projector using Texas Instrument's "Cinelink" technology. If the TI "Enigma" module's private key was leaked, this would enable recording the plaintext SMPTE 292M video stream in real-time. The audio is un-encrypted obviously and easy to record, but it is watermarked so they would be able to trace back the recording to a specific KDM.
- wyager 10y agoJesus, they put so much effort into "encrypting" this data when it fundamentally needs to be available in a decrypted format for the users to watch it. At the end of the day, there's always the analog hole (or, more likely, the digital hole between the rendering chip and the MEMS array or LCD or whatever other mechanism lives inside the projector). No matter how many convoluted layers of encryption they throw at these things, there's always somewhere you can stick a camera or a few high-bandwidth digital signal analyzers and recover the content with at worst slightly degraded quality.
- sprocket35 10y agoDCP isn't a consumer format (yet), it's only intended to protect the movie before it comes out on Bluray. And the encryption isn't convoluted at all, the private/public key system is essentially the same as what protects your information when you log into your bank's website.
- aaron695 10y ago> there's always somewhere you can stick a camera or a few high-bandwidth digital signal analyzers and recover the content with at worst slightly degraded quality And hence you have a safer product? The exact thing they are trying for? The objective is to slow down pirate release. Seems to be working exactly as planned.