Prohibition is a good analogy. Brewing, vinting, and distilling in commercial quality requires capital equipment and a continuing source of supplies. A lot of money changes hands in the real world to make that happen. And yet, Prohibition enforcement failed.<p>A strong encryption ban would make math into contraband. That&#x27;s going to be a lot harder to stop at the borders than a rum runner&#x27;s boat. But, then again, the government could be looking for an opprtunity to wage an unending war against a phantom. There&#x27;s a lot of money to be made from that, starting with a thick slice of that $19 billion for computer &quot;security.&quot; The &quot;security&quot; business has always been good at selling purported protection out one door and surveillance out the other.