Nearssage

Talk with nearby people 📍

An app I envisioned answering to a demanding necessity I've noticed in my environment, people (at least where I live) don't strive to socialize even when meeting, they rather spend their time on social media instead of talking in real life. Fun experience: people in a terrace chatting on Instagram with someone sat a few tables away.

What is this? 🧐

Well, an app to chat and meet people nearby you. But, why near you and not worldwide? Because this isn't a social messaging app made to hook you, is an app to meet people in the real world.

Design 😏

All messaging app should be transparent on how they work, here is a brief description:

Client

• Chat (E2EE)
  • X3DH + CSIDH - (Blake3) Exploring to remove CSIDH as it may have no cryptographic benefits
  • Double Ratchet - Yet to do

Server

• Binary protocol
  • Key agreement - ECDH
  • Encryption - ChaCha20
  • Integrity - CRC32
  • Replay attack mitigation
• UDP Transport
• Embedded key-value distributed database

You can check out this by yourself!

What remains? 🌅

• Figure out why is SEGFAULTING
• Server's endpoint
• App