Currently, the STM32CubeProgrammer CLI allows loading keys into the second CPU of an STM32WB using the wusrkey command. For example, we use it in combination with SBSFU. This command currently requires a path to a file containing the binary key.
My request /propousal would be for this command (or a new one) to also accept the binary key directly (instead of a path to the key file). This way, in flashing tools used in production that need to write this key running this command, there would be no need for a file on the file system, and they could directly provide the key stored in memory (which can be retrieved from a secret management service). This would enhance the security of key custody (enhance, not eliminate, as that is impossible).
