Article 10 of the European Convention on Human Rights: “Everyone has the right to freedom of expression. This right shall include freedom to hold opinions and to receive and impart information and ideas without interference by public authority and regardless of frontiers. […]”
It’s not an absolute right, but cryptography and maths are well within. We have cryptography readily available here in Europe and I don’t think it’s an issue at all. And mind even in the 90s it was mostly fine to exchange the maths for cryptography here in Europe. We had PGP in the Linux repositories. That was US export law contradicting the Constitution. And hence the USA needed that court case and many European countries didn’t.
It’s not an absolute right, but cryptography and maths are well within. We have cryptography readily available here in Europe and I don’t think it’s an issue at all. And mind even in the 90s it was mostly fine to exchange the maths for cryptography here in Europe. We had PGP in the Linux repositories. That was US export law contradicting the Constitution. And hence the USA needed that court case and many European countries didn’t.