Dmitry Belyavskiy

In theory, you could dynamically register NIDs for them. In practice I don't see much sense, so let's leave it in provider part only.

yes. You should write the C test loading the provider, fetching an algorithm and performing test.

_What_ warning, BTW?

OK, try commenting out the line https://github.com/gost-engine/engine/blob/5a399b81e811c28c016fbc0315a9c78593eda1f9/gosthash2012_ref.h#L15

Please turn off -Werror.

@vt-alt sorry, I don't understand this macro https://github.com/gost-engine/engine/blob/5a399b81e811c28c016fbc0315a9c78593eda1f9/gost_md.c#L39 And I'm afraid, the compiler also doesn't.

Somewhen I need to setup the github CI scenario for Windows build...

I'll try to do it when I switch from TLS to CMS.

Could you please provide the dtruss logs?

Well. If I understand correctly, engines (and providers since 3.0) are not designed for being loaded more than once. For most of the command-line applications, you can provide an _extra_...