Fix rsa and ec key size handling #2068

Job	Run time
build on macos (macos-latest)	1m 16s
build on ubuntu:23.10 (gcc,false)	1m 19s
build on macos (macos-latest-xlarge)	46s
build on ubuntu:23.10 (clang,false)	1m 23s
build on fedora:38 (gcc, false)	1m 54s
build on ubuntu:23.04 (gcc,false)	1m 18s
build on fedora:38 (clang, false)	9m 13s
build on ubuntu:23.04 (clang,false)	1m 27s
build on fedora:37 (gcc, false)	1m 50s
build on fedora:37 (clang, false)	1m 53s
build on centos:7 (gcc, true)	1m 47s
build on ubuntu:22.04 (gcc,false)	1m 6s
build on ubuntu:22.04 (clang,true)	1m 30s
build on ubuntu:20.04 (gcc,false)	1m 25s
build on ubuntu:20.04 (clang,false)	1m 38s
build on ubuntu:18.04 (gcc,false)	1m 18s
build on ubuntu:16.04 (gcc,false)	1m 4s
build on ubuntu:14.04 (gcc,false)	1m 8s
build on debian:12 (gcc,false)	1m 28s
build on debian:12 (clang,false)	1m 35s
build on debian:11 (gcc,false)	1m 19s
build on debian:11 (clang,false)	1m 34s
build on debian:10 (gcc,false)	1m 16s
run unit tests (ubuntu:22.04, clang)	12m 29s
run unit tests (centos:7, gcc)	10m 24s
	1h 3m 20s

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