That document refers to a Stratix10, I am using a Max10. I can try the equivalent on Max10.
The process for generating the encrypted files is as follows:
1. Compile design, .sof is created
2. Take .sof into Convert Programming Files
3. Using .key file, generate encrypted .pof and encrypted .rpd and .ekp file from the base .sof
4. JTAG program the encrypted .pof with the .ekp
What you're telling me to do is add a step in step 3 where I would generate a .rbf file from the .sof, then encrypt that .rbf to make an .rpd file that is encrypted that can be downloaded into flash?