Other Parts Discussed in Thread: BQSTUDIO
Tool/software: Code Composer Studio
Hi,
I would like reproduced SHA-1 Authentification with my microcontroller for compared the BQ35100 value with my value for authenticate my platform.
But I don't have the same result between BQ Studio calcul and my uC calcul, i don't no why (See below).
I used another tools (https://cryptii.com/pipes/hmac) for confirm one of the result and i have the same result that my uC result, but not the same that BQ Studio.
And I don't understand the "10.3 Authentication" of Technical Reference Manual (SLUUBH1C). I have to reinject the result HMAC1 in a new HMAC calculation for have HMAC2 (3. 4. 5. 6.) ?
128-bit authentication key KD: 0123456789ABCDEFFEDCBA9876543210
160-bit message M: 546869732069732061207465737420666F722068
HMAC1: What is it ?
160-bit hash HMAC1: What is it ?
HMAC2: What is it ?
Can you help me to understand the SHA-1 Authentication ?
BQ Studio Data:
My microcontroleur Data:
14:53:12.971 -> Key :,0123456789ABCDEFFEDCBA9876543210
14:53:13.004 -> Message :,546869732069732061207465737420666F722068
14:53:13.072 -> Expect :,5D80AC0CDB62DA0BADB8AD272AF9D6A11223E734
14:53:13.141 -> Digest :,3432BDBB97E3CF179EB616E881EDFE5E6EDF7F80
Thanks.
