Privacy

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A place to discuss privacy and freedom in the digital world.

Privacy has become a very important issue in modern society, with companies and governments constantly abusing their power, more and more people are waking up to the importance of digital privacy.

In this community everyone is welcome to post links and discuss topics related to privacy.

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If you have a question, please try searching for previous discussions, maybe it has already been answered
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Do P2P Messaging apps that don't require the internet exist? (lemmings.world)

submitted 11 hours ago by [email protected] to c/[email protected]

27 comments fedilink hide all child comments

We all know Signal, Matrix, Telegram, SimpleX, etc... But if you can't access the internet you can't communicate. Pretty logic. But would it be possible, at least theoretically, to create an app that permits to message people even if the internet goes down?

It might be a dumb question I really have no idea to be honest.

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[–] [email protected] 3 points 6 hours ago

You can encrypt a radio.

Rattlegram is an app on iOS/Android that alllows converting text to audio and play it over your phone's speaker

Secure Space Encryptor (SSE) (known as Paranoia Text Encryption on iOS) is an Open Source app that can encrypt text.

Use SSE to encrypt text
Copy-Paste the Ciphertext to Rattlegram
Sent it over the radio
On the other end, use Raddlegram to turn the audio back to the ciphertext
Use SSE to decrypt.

Voila! Off-Grid Encrypted communications.

Warning: Encryption over radio is illegal in many countries 😉 (but fuck the law lol, who cares)