Hello Sir:
I am using BQ27Z561-R2 but I cannot change the Authentication Key.
In TRM section 13.8.20, 128-bit key should be written to MACData().
But SHA-256 need 256bit. I cannot understand this step.
Another question is about the timming.
If my target Key is 00112233445566778899AABBCCDDEEFF00112233445566778899AABBCCDDEEFF.
After UNSEAL_FULL_ACCESS, which operation is correct?
A. Write 3700 to 3E, wait some(How long?) time and then write 00112233445566778899AABBCCDDEEFF00112233445566778899AABBCCDDEEFF 0F24 to 40.
B. Write 3700 00112233445566778899AABBCCDDEEFF00112233445566778899AABBCCDDEEFF 0F24 to 3E directly
Please kindly provide the recommendations for us.
Thanks a lot.
