I have a similar problem, i need to encrypt eMMC on Orange PI PC+ for preventing copying/reverse engineering of my software. I have read a bunch of docs about LUKS and keyfile-based encrypting,a but I have no idea about how to implement it in the PI. The keyfile must possibly be written in the eMMC, and the boot must be automatic at each power cycle, without user intervention. Does anyone have suggestions?
many thanks in advance,
Marco