SLUUB65B May 2015 – December 2022
To execute an authentication query in UNSEALED mode, follow the steps below:
The fuel gauge uses the challenge, in conjunction with the programmed authentication key, in its SHA-1 computations. After completion, the resulting digest is stored in the Authenticate() register, overwriting the preexisting challenge. The host must wait at least 45 ms to read the resulting digest. The host may then read this response and compare it against the result created by its own parallel computation.