GhostNet is a secure, anonymous, and decentralized chat application for Android that allows users to communicate without internet or network coverage. It creates a resilient mesh network using Bluetooth and Wi-Fi Direct, enabling messages and files to hop between devices, extending the range far beyond standard Bluetooth limits. Key Features Completely Offline: Works without any internet or cellular connection — ideal for remote areas, crowded events, or emergency communication. True Anonymity: No accounts, phone numbers, or personal data required. Each session uses a temporary username. Web-of-Trust Model: Connection requests must be approved by a host before joining, preventing unauthorized access. Decentralized Mesh Network: No servers, no cloud — devices connect directly to each other, forming a self-healing, censorship-resistant network. **End-to-End Encryption:**Messages encrypted with AES-256 (symmetric). Messages signed and verified with RSA-2048 (asymmetric). Each message is uniquely signed and verified for authenticity. **File & Attachment Sharing: **Send images or documents securely between peers. Modern UI: Built entirely with Jetpack Compose, featuring dark-cyan cyber aesthetics.