52.5.2.2 Configuration

The IV (Initialization Vector) field of the TZAESB Initialization Vector register x (TZAESB_IVRx) can be used to add a nonce in the encryption process in order to add more security (ignored if not filled). In this case, any value encrypted with a given nonce can only be decrypted with this nonce. If another nonce is set for the TZAESB_IVRx.IV, any value encrypted with the previous nonce can no longer be decrypted (see TZAESB_IVRx).