Assuming the OS has privileged access to everything that runs on it, the EU just has to tell the vendor to implement scanning and reporting at ring(app-1) and let the vendors scramble to figure out how to make that fever dream a reality, no? Hell, put it into the Intel Management Engine/analogue and compromise every device subsequently manufactured. The pervs (or the freedom fighters, or the tentacle hentai underground, or whatever) will just have to go back to passing hardcopy in dank backrooms of no-longer-smoky-because-they-banned-smoking-in-pubs...pubs
It's not dark magic to host a private, e2ee chat service.
But it might be a good way to attract the attention of law enforcement.
People running PGP phone services have been arrested and prosecuted because their networks were primarily used by criminals. If you run a encrypted chat service to circumvent the law you might be held accountable for what users use your encrypted chat service for.
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To be honest I wouldn't expect Linux nor custom devices to even be necessary. It's not dark magic to host a private, e2ee chat service.
Either a Matrix Server or even NextCloud chat will do the job just fine. Then just sideload an APK which is rather trivial
Assuming the OS has privileged access to everything that runs on it, the EU just has to tell the vendor to implement scanning and reporting at ring(app-1) and let the vendors scramble to figure out how to make that fever dream a reality, no? Hell, put it into the Intel Management Engine/analogue and compromise every device subsequently manufactured. The pervs (or the freedom fighters, or the tentacle hentai underground, or whatever) will just have to go back to passing hardcopy in dank backrooms of no-longer-smoky-because-they-banned-smoking-in-pubs...pubs
But it might be a good way to attract the attention of law enforcement. People running PGP phone services have been arrested and prosecuted because their networks were primarily used by criminals. If you run a encrypted chat service to circumvent the law you might be held accountable for what users use your encrypted chat service for.