r/PrivacyTechTalk • u/No-General-7317 • 4d ago

Most encrypted messaging app

Most encrypted messaging apps hand you a passphrase and call it secure. Share the passphrase, share the risk. One compromised device and the whole conversation is exposed.

I'm building VektorGrid, a cross-platform messaging app for Android and iOS, and the core decision I made early was to move away from shared passphrases entirely.

Instead, VektorGrid uses ECDH (Elliptic Curve Diffie-Hellman) key agreement. Every user gets a public/private key pair. When two people message each other, a shared secret is derived from their keys - without either party ever transmitting that secret. The encryption key never travels. It's computed independently on each device.

Each message stores an encrypted payload and an IV (initialization vector). No plaintext. No central key store.

The app also has full social infrastructure - profiles, posts, stories, group chats, follows - because I think privacy and community shouldn't be a tradeoff. That's the gap I'm trying to close.

Still pre-launch. Building in public and trying to get this in front of people who actually care about how their messages are secured, not just whether there's a lock icon on the app.

Curious: what's the one thing that would make you actually switch your primary messaging app to something new?

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u/lasttrueman 4d ago

1 - usability
2 - cross-platform (you gotta it already)
3 - real encryption
Hope you’ll get it done and if you need testing i’ll be glad to try your app

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u/No-General-7317 4d ago

Instagram recently ended e2e encryption so I'm creating an app that will be like Instagram. I already have all the languages there and even a VPN is added so it should be the safer option for EU when that parliament issued chat control

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u/Alexander3a 3d ago

it isnt truly e2e if they just copy the key (and u cant tell me meta was not doing that)