Unlike physical locks, breaking encrypted data doesn't need physical presence. This means that not just local authorities under an elected Sheriff can break into one's house, but also completely random people from say China or KSA can teleport in, break in and kidnap the data.
In the near future we'll have a brain-to-computer-to-internet interface. This will be a big leap forward or backwards as it can be used for rapid collaboration or total undisputable survelliance for a greedy dictator. The crypthography case today will set the precedent for tomorrow. Btw, even the 24/7 thoughts monitoring can be used for good: someone really advanced, a saint-like person, could be giving advice on what's wrong with your thoughts. But we understand that the humanity is far from this level of maturity.
1. Yes, for many (too many) values of they. "Your" government, all governments, so essentially any corporation, or any private individual that can afford time or computing resources and is interested in a target.
2. This scheme doesn't age well. Targets' mandatory low-grade encrypted communications today could be saved as blackmail time capsules, much more easily decrypted with cheap resources in the too-near future.
I don't have a reference on hand though.
This also makes it trivial for nation states and larger groups to decrypt whatever data they're able to sniff. It would actually encourage more groups to get into more places where they can sniff more data.
This way the vast majority of communication is protected, and the government can't just spy en mass.
But, if there was some specific target they could throw a lot of computing resources at it. But they would need to know in advance who to target, they couldn't just have a wide dragnet.
Thoughts?