Yes, the government considered strong cryptography to be a munition and said it was illegal to put the source code of PGP on the internet. Courts ruled against

Yes, the government considered strong cryptography to be a munition and said it was illegal to put the source code of PGP on the internet. Courts ruled against the government in Bernstein vs. United States, saying source code was speech protected by the First Amendment. That's why we can all use strong cryptography today. https://en.wikipedia.org/wiki/Bernstein_v._United_States https://en.wikipedia.org/wiki/Bernstein_v._United_States