[issue40645] Use OpenSSL's HMAC API

[Christian Heimes]

Change by Christian Heimes <lists at cheimes.de>:


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keywords: +patch
pull_requests: +19434
pull_request: https://github.com/python/cpython/pull/20129

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue40645>
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