I've been saying this for years. Encryption is math. Not in theory. Not in abstract. In real practice. Encryption is math. To make encryption illegal—as 75% of US politicians, from both parties, including President Obama, want to do—is literally saying "if you do this math, we will put you in prison." It's no less absurd than when Indiana tried to pass a law declaring π to be 3.2. It's insanity. Liberty notwithstanding, it is unequivocal madness. No lunatic's tyranny can change that.