The use of a own dovi.ko sounds really the best solution.
And as I thought OSMC: OPEN source media centra is now CSMC: CLOSED source media center.
They have now a dovi.ko_enc, encrypted module.
As it’s their own module they will never make it public - thank you to open source world. And as it’s own source it’s nothing about “secure” or NDA, it’s only paranoia. Even Amlogic itself do not encrypt the module, only CSMC. Take everything from open source, add other stuff, encrypt it and sell it.
This is the way.
Supporting such platform is a punch into the open source users!
I am not sure how about Dolby Vision Laboratories do think about such violation…