Verified on focal:
ubuntu@ubuntu:~$ dpkg-architecture --is s390x && [ "$(dpkg-query -W -f='${Version}' libssl1.1)" = "1.1.1f-1ubuntu2.5" ] && gcc -o aes-test test.c -lcrypto -lssl && ./aes-test && echo OK OK
Verified on focal:
ubuntu@ubuntu:~$ dpkg-architecture --is s390x && [ "$(dpkg-query -W -f='${Version}' libssl1.1)" = "1.1.1f-1ubuntu2.5" ] && gcc -o aes-test test.c -lcrypto -lssl && ./aes-test && echo OK
OK