So we would like to use the fused non-volatile key in the Cyclone V to provide our application with a seed for an SHA-256 algorithm. It's not clear to me if you can set this fuse and then access the value internally in the FPGA design? Primarily it would be nice to have a permanent secret key so that when we update the devices it doesn't need a specific bitstream file for each FPGA. Or am I misunderstanding the encrypted FPGA programming?
Hi, so since the value is not a register it's only primary use is de-encrypting the bit file? I can't use this value in a design to have a fixed value that won't change with a new bit file?