Refactor sha1 and time-limited code (#31023) #31030
Merged
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Backport #31023 by wxiaoguang
Remove "EncodeSha1", it shouldn't be used as a general purpose hasher (just like we have removed "EncodeMD5" in #28622)
Rewrite the "time-limited code" related code and write better tests, the old code doesn't seem quite right.