permissionlesstech/bitchat-android

Features

• Message Batching - Queues small outgoing messages and transmits them as a single batch to reduce network overhead and energy consumption.
• Ephemeral Message Stores - Stores messages locally with a configurable time-to-live and deletes them automatically after expiry to limit data persistence.
• Bluetooth Mesh Implementations - Enables sending messages across a mesh of nearby Bluetooth devices without using the internet or central servers.
• Cover Traffic Generators - Periodically sends fake messages to hide actual communication patterns from network observers.
• Mesh Networking - Sends messages directly between nearby devices over a mesh network without internet or central servers.
• Messaging Channel Management - Allows users to join or create topic-based channels with password protection and assignable ownership.
• Publish-Subscribe Systems - Organizes channels by topics with optional password protection, ownership transfer, and configurable retention periods for group communication.
• Offline Topic Channels - Creates or joins topic-based channels with optional password protection and controlled retention, without requiring internet.
• Store-and-Forward Protocols - Implements a store-and-forward flooding protocol that propagates messages through adjacent devices without duplicates.
• Mesh Network Battery Savers - Adapts scanning frequency to battery level and compresses messages to reduce power and bandwidth usage on mobile devices.
• Mesh Network Power Optimizers - Adjusts scanning based on battery level, compresses large messages, and batches transmissions to save energy and data.
• Mesh Scanning Duty Cyclers - Dynamically reduces Bluetooth mesh scanning frequency when battery is low to extend device runtime.
• End-to-End Encrypted Messaging Frameworks - Encrypts messages with per-session cryptographic keys so only intended recipients can read them.
• Session-Based Exchanges - Generates unique encryption keys per chat session using Diffie-Hellman exchange to ensure forward secrecy.
• Anonymous Messaging Tools - Operates without accounts or persistent identifiers, adds cover traffic, and enables emergency wipe to resist surveillance.
• Privacy-Focused Communication - Provides a decentralized messenger that operates without accounts and includes an emergency wipe function for privacy.
• Local Data Wipers - Provides a user-triggered command that wipes all local messages, keys, and channel metadata to protect privacy under duress.
• User Privacy Protection - Operates without accounts or persistent identifiers, keeps messages ephemeral, adds cover traffic, and allows emergency wipe.
• Peer-to-Peer - A chat platform where devices communicate directly without relying on cloud servers or internet connectivity.

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