Noghteha

Noghteha: Offline Mesh Messenger with Privacy-First Architecture

Noghteha is a decentralized messaging platform engineered for mesh networks, prioritizing user privacy and communication continuity when traditional internet access is unavailable or unreliable. This application constructs a resilient local area network using Bluetooth and WiFi Aware protocols, enabling messages to hop seamlessly between devices without requiring any centralized infrastructure. Whether you are attending a crowded festival, navigating a university campus, traveling through regions with poor cellular coverage, or preparing for emergency scenarios, Noghteha ensures uninterrupted text-based communication. When global reach becomes necessary, its supplementary online mode routes traffic through the Tor network and Nostr protocol without altering your established messaging habits.

Offline Mesh Messaging for Daily Use and Emergency Scenarios

This peer-to-peer chat tool connects nearby devices within a range of 10 to 100 meters via Bluetooth and approximately 50 meters through WiFi Aware for faster data transfers. Messages are automatically relayed through intermediate devices in your vicinity, allowing a short chain of connections to traverse surprisingly long distances. The setup process requires no phone number, email address, or account registration; your identity remains local to your device, with rotating Bluetooth addresses implemented to minimize tracking risks. You can create public rooms for open discussions or utilize password-protected channels for small groups, maintaining communication even when cellular networks fail entirely.

Core Functional Capabilities:
- Bluetooth and WiFi Aware mesh networking
- Zero registration with anonymous identity management
- Public rooms and password-protected channels
- Automatic message relaying through connected devices
- Rotating Bluetooth addresses for enhanced privacy

Security and Privacy by Design

Every conversation within Noghteha is encrypted end-to-end using the Noise Protocol XX handshake with ChaCha20 Poly1305 cipher suite, ensuring perfect forward secrecy that protects past messages even if future keys are compromised. Channel passwords are strengthened through Argon2id key derivation, while all local data resides in an encrypted SQLCipher database using AES-256 encryption. Hardware-backed key storage is achieved through Android Keystore with StrongBox when available. A panic mode feature allows instant deletion of all application data through triple-pass secure wiping, while multi-layered stealth modes reduce Bluetooth visibility to keep Noghteha operationally discreet.

Security Implementation Details:
- End-to-end encryption via Noise Protocol XX
- Perfect forward secrecy with ChaCha20 Poly1305
- Argon2id password hashing for channels
- SQLCipher database with AES-256 encryption
- Android Keystore with StrongBox hardware support
- Panic mode with triple-pass secure deletion
- Stealth modes with minimized Bluetooth visibility

Rich Chat Features and Polished User Interface

Beyond its robust offline capabilities, Noghteha functions as a full-featured secure group chat application. Users can send text messages with @mentions, record voice notes accompanied by waveform visualization, share images or files up to 100 MB in size, reply within threaded conversations, and view link previews. Location-based channels facilitate connections with nearby people, while familiar IRC-style commands such as /join, /who, and /msg simplify advanced usage. Right-to-left (RTL) language support is fully implemented with the Vazirmatn font, complemented by light or dark themes and Material You color theming on Android 12 or newer versions.

Advanced Communication Tools:
- Text messaging with @mentions and threads
- Voice recording with waveform display
- File sharing up to 100 MB per transfer
- Location-based channel discovery
- IRC-style command interface
- RTL language support with Vazirmatn font
- Material You theming on Android 12+
- Light and dark theme options

Quick Feature Overview:
- Mesh networking via Bluetooth and WiFi Aware
- End-to-end encryption with perfect forward secrecy
- Panic mode for instant data deletion
- Voice notes with waveform visualization
- File sharing up to 100 MB
- IRC-style commands for power users
- Material You theming on Android 12+
- RTL language support with Vazirmatn font

Download the Noghteha mobile app now to stay connected privately — both offline and online — with a fast, modern messenger that prioritizes your security and autonomy.

Heads up: you'll need WiFi or Bluetooth enabled for mesh features to function. Some advanced privacy tools are available as optional in-app purchases.