As long as your country allows you to even own the tools...

Which countries don’t?

I have no idea about the global situation, but in Germany there was a lot of discussion when they introduced §202c StGb 15 years ago.

- https://www.schneier.com/blog/archives/2007/08/new_german_ha...

- https://www.gesetze-im-internet.de/stgb/__202c.html

However, it seems it is not about owning the tools, but rather about creating them.