{"repo":"Stade-App/stade","free":true,"listed":false,"github":"https://github.com/Stade-App/stade","clone":"git clone https://github.com/Stade-App/stade.git","description":"Open source peer-to-peer encrypted chat app with no central server.","language":"Kotlin","stars":39,"topics":["e2ee","messaging","post-quantum-encryption","tor-messenger","kotlin-multiplatform"],"license":null,"category":"chat-messaging","readme_excerpt":"Stade Stade is a peer-to-peer encrypted chat app with no central server. Every message travels directly between devices — over Tor onion services or the local network — and is protected by a post-quantum-hybrid encryption scheme. There are no accounts, no phone numbers, and no servers that ever see your messages or metadata. Built with Kotlin Multiplatform and Compose Multiplatform, Stade runs natively on Android , Windows , macOS , and Linux from a single shared codebase. Core principles - No servers. Messages go directly from sender to recipient. There is nothing in the middle to breach, subpoena, or go down. - No accounts. Your identity is a self-sovereign STADE-XXXXXXXXXXXX ID, derived from your own keys — nothing is registered anywhere. - Post-quantum by default. Every conversation is protected against both today's attackers and tomorrow's quantum computers. Security & Encryption - Hybrid post-quantum Double Ratchet — every message is encrypted with a Double Ratchet that mixes a classical X25519 Diffie-Hellman ratchet with ML-KEM-768 (a post-quantum key encapsulation mechanism) at every step, so forward secrecy and break-in recovery hold even against a future quantum adversary. - Dual signatures — every handshake and identity claim is signed twice: once with classical Ed25519 and once with post-quantum ML-DSA-65 , so authentication doesn't rest on a single cryptographic assumption. - Self-sovereign identity — your STADE- ID is deterministically derived from the hash of y","default_branch":null,"files":null,"tree":[],"storefront":"/r/Stade-App","claimed":false,"request_supported":{"post":"https://gitbuyer.com/r/Stade-App/stade/request-supported","requests":0},"note":"indexed from public GitHub; nothing is for sale on this page. Clone it from GitHub. Paid listings live at /search."}