7.1.3 Run the sam_gen_keypayload.py Script

The device public key for the SAM9X7 Series MPU is provided as a PEM encoded public key in sam9x70_public_key.pem. The sam_gen_keypayload.py script takes the cust_CMAC.yaml file as input and creates an encrypted and signed output file that will eventually be loaded into the MPU in a separate step.
$ sam_gen_keypayload.py -d sam9x70_public_key.pem -c cust_CMAC.yaml -o customer-key.cip