you can build openssl on AROS: there is a port on Aminet of OpenSSL 1.1.1i that _will_ build (the maintainers only build for AmigaOS 3/m68k and AmigaOS 4/PPC but it'll work on MorphOS and AROS too), and of course aminet is available over HTTP which is how we avoid the bootstrap problem :).

Aside: pretty much anything that will build on a BSD will build on an Amiga/AROS with ixemul.library, but some people think that's cheating.