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AM263P4: SBL Encryption Key Storage

Olivier Hepler
Prodigy 155 points

Part Number: AM263P4

Tool/software:

Hi,

I am currently implementing secure boot on the AM263P Control Card.

In the script mcu_rom_image_gen.py used to sign the SBL image, create a certificate, and concatenate that to its binary we have an option to encrypt that binary. If we were to encrypt the binary, where do we store the public key used to do that encryption on the board so that the RBL knows where to find it?

I believe I understand where to store the public key for signing but I'm unclear about where to store the one used for encryption of the binary and I can't seem to find a clear answer in the documentation.

Thanks