Merge pull request #395 from padelsbach/kbkdf-fixes #2021

Job	Run time
test_sssd (2.9.1, master, openssl-3.5.0, WOLFPROV_FORCE_FAIL=1)	12m 25s
test_sssd (2.9.1, master, openssl-3.5.0)	10m 57s
test_sssd (2.9.1, v5.8.0-stable, openssl-3.5.0)	13m 1s
test_sssd (2.9.1, v5.8.0-stable, openssl-3.5.0, WOLFPROV_FORCE_FAIL=1)	13m 22s
	49m 45s

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