Security hardening, input validation, memory-safety, and key zeroization fixes #2421

Job	Run time
discover_versions / Resolve wolfSSL + OpenSSL refs	17s
Simple Test (master, openssl-3.0.17, --replace-default --enable-replace-default-testing)	2m 56s
Simple Test (master, openssl-3.0.17)	4m 10s
Simple Test (master, openssl-3.6.3, --replace-default --enable-replace-default-testing)	5m 44s
Simple Test (v5.9.2-stable, openssl-3.0.17, --replace-default --enable-replace-default-testing)	3m 55s
Simple Test (v5.8.4-stable, openssl-3.6.3)	4m 33s
Simple Test (v5.9.2-stable, openssl-3.6.3, --replace-default --enable-replace-default-testing)	4m 51s
Simple Test (v5.9.2-stable, openssl-3.0.17)	4m 41s
Simple Test (v5.9.2-stable, openssl-3.6.3)	5m 37s
Simple Test (v5.8.4-stable, openssl-3.0.17)	4m 12s
Simple Test (v5.8.4-stable, openssl-3.6.3, --replace-default --enable-replace-default-testing)	4m 49s
Simple Test (v5.8.4-stable, openssl-3.0.17, --replace-default --enable-replace-default-testing)	4m 24s
Simple Test (master, openssl-3.6.3)	6m 10s
	56m 19s

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