Can cryptography be regulated? I mean - can software development be regulated? Can open source be regulated? Can state prevent developer from working on somethi

Can cryptography be regulated? I mean - can software development be regulated? Can open source be regulated? Can state prevent developer from working on something and then sharing with the internet? When I think about it cryptography is based on availability of good quality random source, so if only they (state) can make hardware manufacturers to ensure there are no such sources they are half way through to achieve what they want... I wonder when will we be banned from using knives to cut our bread...