Secure Chat Mobile App

Welcome to the Secure Chat Mobile App project page. This comprehensive mobile application prioritizes user privacy and security through end-to-end encryption, providing a secure platform for private communications. Built with modern technologies including Expo, Supabase, and advanced cryptographic algorithms, the app ensures that conversations remain confidential and protected.

Features

• End-to-End Encryption: Advanced AES encryption algorithm ensures all messages are secured before transmission
• Multiple Authentication Methods: Flexible authentication using Supabase Anonymous auth or GitHub OAuth integration
• Real-time Messaging: Instant message delivery using Supabase Realtime subscriptions
• Secure Data Storage: All chat history and user data stored securely in Supabase PostgreSQL database
• Cross-platform Compatibility: Native mobile experience on both iOS and Android devices
• User-friendly Interface: Intuitive design that prioritizes security without compromising usability
• Message History: Persistent chat history with secure local and cloud storage

Screenshots

Key Functionality

The app provides users with:

• Secure Communication: All messages are encrypted using AES symmetric encryption before transmission
• Real-time Synchronization: Messages are delivered instantly across all connected devices
• Privacy Protection: No plaintext messages are stored on servers or transmitted over the network
• Authentication Security: Multiple secure authentication options to protect user accounts
• Data Integrity: Cryptographic verification ensures message authenticity and prevents tampering

Technologies Used

• Expo: Cross-platform mobile development framework for React Native
• Supabase: Backend-as-a-Service providing authentication, real-time subscriptions, and database
• AES Encryption: Advanced Encryption Standard for symmetric key encryption
• React Native: Native mobile development framework for iOS and Android
• PostgreSQL: Robust relational database for secure data storage
• WebSocket: Real-time bidirectional communication protocol

Project Impact

This application addresses the growing need for secure communication in our digital age. By implementing industry-standard encryption and security practices, the app provides users with confidence that their private conversations remain private, demonstrating the importance of security-first design in modern applications.

Installation

1. Clone the repository from GitHub
2. Install dependencies using npm install
3. Start the development server with npx expo start
4. Scan the QR code using the Expo Go app on your mobile device