Smoke Crypto Messenger

Smoke Crypto Messenger is an open-source instant messaging tool that employs the McEliece encryption algorithm, proven to be secure against quantum computing. It utilizes its own server software, SmokeStack-Server, to create a decentralized chat ecosystem. The server operates as an Echo-Server, using the encrypted Echo-Protocol. Smoke Messenger implements the McEliece cryptosystem with four different moduli, including a classic modulus, two variants, and a super modulus developed by Textbrowser. Key features of Smoke include: - **Aliases**: Retain contacts without needing a phone number, using Smoke-ID or aliases to share initial McEliece public keys. - **App Lock**: Ability to lock the application screen. - **Argon2id and PBKDF2 Key Derivation Functions**. - **Authenticated Encryption for Chats**. - **Decentralization**: The app does not rely on central infrastructure, requiring at least one connection to a friend or server. - **No Registration or Phone Number Required**. - **Encrypted Communication**. - **Fiasco Forward Secrecy**: Multiple keys are used for forward secrecy. - **Juggling Dominance Protocol**: Keys are established using a zero-knowledge paradigm. - **Obfuscation of Resident Keys**. - **Ozone Destination**: Private and public repositories for sending messages to offline friends. - **Post Office for Past Messages**: Stores past messages, which can be sent when a connection becomes available. - **Public and Private Public Key Servers**. - **Group Chats**: Semi-compatible with Spot-On via Fire. - **Steam Protocol**: Reliable file sharing via Echo.

Smoke Crypto Messenger is an open-source instant messaging tool that uses the McEliece encryption algorithm to provide quantum-secure communication and builds a decentralized chat ecosystem with its server software SmokeStack-Server.