Cryptographer is an Android application that provides secure text encryption and encoding conversion capabilities. Built using Clean Architecture principles and Domain-Driven Design (DDD), the application emphasizes modularity, testability, and maintainability. Key Features 🔑 Key Generation: Generate encryption keys for AES-128, AES-192, AES-256, and ChaCha20-256 algorithms 🔐 Text Encryption: Encrypt plain text using AES or ChaCha20 with secure random IV generation 🔓 Text Decryption: Decrypt encrypted text with support for custom IV (Initialization Vector) 📝 Encoding Conversion: Convert text between UTF-8, ASCII, and BASE64 encodings 💾 Key Management: Save, view, and delete encryption keys locally 📋 Clipboard Integration: Copy encrypted/decrypted text and keys to clipboard 🌍 Multi-language Support: Internationalization support for multiple languages 🎨 Theme Support: Light and dark theme modes Supported Algorithms AES-128: Advanced Encryption Standard with 128-bit key AES-192: Advanced Encryption Standard with 192-bit key AES-256: Advanced Encryption Standard with 256-bit key ChaCha20-256: ChaCha20 stream cipher with 256-bit key Supported Encodings UTF-8: Unicode Transformation Format ASCII: American Standard Code for Information Interchange BASE64: Base64 encoding scheme