Forgive me if this is an obvious stupid question, but with all this talk (again) about the EU trying to force chat platforms to check the content of its messages, I can help but think: how are they ever going to prevent me and my friend from sharing public keys and using them to encrypt our messages to each other? In other words: how are they ever going to be able to ban encryption?
The same way they prevent you from transmitting any other illegal content: they fine you and/or throw you in jail if they know you’re doing it.
It’s trivially easy to detect encrypted messages just by measuring the entropy of each message. A messaging provider would just turn you in if they detect it.
You could probably get away with peer-to-peer messaging, but your ISP would be able to detect that you’re using unapproved encryption and then turn you in to the government.
Thanks. And fuck this.