Wouldn&#x27;t this be easy to subvert, though?<p>I mean, say we put through a few patches and started generating primes more often. Then there big-ass special purpose prime machine becomes an order of magnitude less-effective, right?<p>I think the best way to defend against these one-to-many attacks is to spread out the cost of decrypting large quantities of data. If we all had our own keys, even if they weren&#x27;t as strong as one single key that everyone used, that much more work has to be done to decrypt data for a group of users.<p>I know nothing about crypto, but a layman can hear about these implementation architectures and immediately realize what&#x27;s wrong with it all.