In the US, since the 1950s, you need a permit to export any product which has encryption. There are fines if you don't file the right paperwork. In the 1970s an

In the US, since the 1950s, you need a permit to export any product which has encryption. There are fines if you don't file the right paperwork. In the 1970s and 80s they would only approve keys of 40 bits or less. https://en.wikipedia.org/wiki/Export_of_cryptography_from_the_United_States https://en.wikipedia.org/wiki/Export_of_cryptography_from_th...