When I was in college, there was a retired guy that would come in to tutor students as a way to stay busy. He was your stereotypical brainiac type dude - quiet

When I was in college, there was a retired guy that would come in to tutor students as a way to stay busy. He was your stereotypical brainiac type dude - quiet, lanky, glasses, soft spoken, and razor sharp. He must have been in his 50s, but you would think he had just completed upper division math, chemistry, and physics "last semester" with perfect grades to boot. He told me a story about how once while in his Masters program, one of his colleagues figured out how to do some cool stuff with unenriched uranium. Almost like out of a movie, he said, the government stepped in and made sure he did not publish his research. I wonder if we'll see that type of stuff happen with cryptography or if it's already happening. I wouldn't be surprised if these theatrics were just to maintain the illusion that they don't have access to stuff.