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Hi：关于BQ28Z610如何获取SHA-1和修改；change key该更秘钥可以，但是改后Authenticate Guage验证失败；
Hi
感谢您对TI产品的关注！请参考下面BQ28Z610 authentication flow：
[FAQ] BQ28Z610 authentication flow
Hi Elrwen：
Thanks a lot for your post;
Hi Elrwen:
For example:
key = 0123456789abcdeffedcba9876543210
challenge = 00112233445566778899aabbccddeeff11223344
So input (key + challenge): 0123456789abcdeffedcba987654321000112233445566778899aabbccddeeff11223344
Result: 743d18ed77c7a60260c44d029a8aae067f4b5523
So then doing step 2 (key + result from first one), the input is: 0123456789abcdeffedcba9876543210743d18ed77c7a60260c44d029a8aae067f4b5523
And the result is: 0f83ec417cb4dbd2442af5f51c61abbef061685f这里面的:
So input (key + challenge): 0123456789abcdeffedcba987654321000112233445566778899aabbccddeeff11223344；是怎么计算得到结果的呢：Result: 743d18ed77c7a60260c44d029a8aae067f4b5523；
https://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1069956/bq40z80-sha1-hmac-digest-calculation?tisearch=e2e-sitesearch&keymatch=SHA1%2520TI-HMAC%2520code%253A#
上面这个链接，拉到最后Wyatt Keller的回复，里面提到了一个online tool，可以使用那个计算，Input Type选择hex。
