I ignore the ban and continue using my applications which are all open source.

Probably find ways to buy all the advertising profile data I can, sort through it until I find some related to the fools that voted for that, and give it to spammers.

The people that make these laws often have zero idea how anything works beyond "the lobbyist said do this, so I do this." So they should be educated about their poor decisions.

Manual encryption.

I have a few tools in backup and installed on my devices in case that happens.

PGP

The government banned pirating media. That hasn't exactly stopped the tech savvy from doing it anyway.

Get all my money out of the bank in physical and keep living. Since encryption is dead, internet commerce is dead and keeping any sort of money in digital is now unsecured.

It would ultimately have similar effects as when most governments banned The Pirate Bay: it stifled grandma from accessing it, but anyone who has any will to do so, or small amount of technical skill will bypass the ban.

To do whatever it takes - I certainly will not comply. No, I don't care that makes me a criminal. If somebody made it legally mandatory to eat babies, I wouldn't do that either.

Would switch to self-hosted matrix and persuade as many family members and friends to do the same, using my server if they want.

There are plenty of free and open source pgp tools out there. Nothing is stopping you from encrypting your own text and pasting it into messaging apps. Even if you dont trust some tool from the internet, sha2 isnt that hard to understand or implement with a bit of motivation

Use them illegally.

Stop talking to people altogether. It's not like my mental health can get much worse anyway.

Probably best investment now would be a ton of thumb drives. Thumbernet will be big.

Well, we'd be back to the 80s and I'd ask my parents about life back then. Online banking would cease to exist and I have to go to the bank teller's window to get or transfer money, also shops probably fall back to cash only. I'd need to open and start my car with a key unless that kind of cryptography is still okay and it's just phones... I'd plug my laptop and smartphone in with a network cable becase I'd be afraid the neighbours commit crimes with my Wifi... My employer might want to resort to paper instead of computers because there isn't any authentication for the company's data... I could cancel my Netflix and Spotify subscriptions because they'd either cease to exist, or I could just watch them without paying. I'd talk to my wife in the evening instead of arrange stuff via an instant messenger... I guess all of that is doable. People did it that way a while ago. It just needs restructuring of the entire economy, society and our lifes would lack most of the modern convenience. (And if it's just phones and every other cryptography is fine, I'd just get rid of the thing and use my laptop or whatever is still allowed for everything.)

And since the question was about the gameplan... First thing, I'd invest all my money into copper and fibre optic companies immediately, because people will need to install A LOT of additional, direct cables between things.

Flood all communication channels with constant AI bullshit.

Keep... using it? How are they going to enforce this?

Worst case scenario, and they somehow manage to remove access to every encrypted chat application in every store (including f-droid) and every repos of every distribution everywhere; and shut down every server in my country; and get telecoms to block every port of every secure chat client; I've got VPSes outside my country, and VPN configured. I'd probably build my own encrypted chat - centralized server hosted on my VPS - with PK E2E encryption.

For a big, public chat app, the bar is higher. For my family and friends, something I hacked together would be good enough. As long as encryption is done in the client, hiding metadata (who's talking to who) isn't important for my use (we're all family & friends). Chat is the most trivial of applications to build; it only starts getting complex when you want it to be serverless, or anonymous, or have PFS. Securing popular servers (attractive targets) makes things harder; being popular makes things harder.

Nice try!

Start speaking a dead language. Or just use genz language. Can you skibidi that for me?

Briar. No servers to block.

I'll show them mine if they show me theirs. On a serious note, encryption is just complicated math added on top of ones and zeroes. They can't really ban that, it'll only make people all the more educated in circumventing such bans and then they're fighting an encryption hydra, becoming stronger with each iteration.

OTP

Ok, let's roll with it. Gov manages to ban all encrypted communication, The only logical conclusion would be that all communication has been banned, since you can always easily agree with your correspondant about an encryption. No communication means, no telephone, no mails, no internet, no speaking, no sign language, I guess paper is banned too, no pencil, no way to write anything...

Hmm, I guess the gov managed to get us back to living in cave then, and managed to erase everybody's memory of technology too.

My gameplan is then the following, get a big stick to defend my cave with my local community, growing food, chill and enjoy life until I die from a disease.

Matrix, I would use only matrix anymore, and if they kill e2e in Matrix, I use a fork that has it not killed.

Buy 2 copies of the same book. Provide the second party a copy of the book and the cypher order(ex. First number page, second number paragraph, third number word or letter).

Alice and Bob and Eve and Trent and Mallory.

Quit smartphones. Use only air gapped computer, (hoping govt or biz does not send signal to trigger kill switches they are known to have in them.)

I did not have a cell phone for most of my life and I think I was happier without it. Internet was great but the enshitification makes it less and less useful.

At a minimum I want to switch to open source on computers and phone. Maybe the NSA types can still see everything you are doing, but one might be able to prevent the data brokers from getting it, which allows anybody willing to pay for tranches of it to know everything you have done, and that includes every single government agency which buys that data now.

One might think since you weren't doing anything wrong you have nothing to fear, this information is inherently harmful in the hands of these interests in ways that are not readily apparent. Such as micro targeting on Facebook and such.