EncryptBoard

EncryptBoard is a privacy-first Android keyboard that encrypts your messages on-device before they leave your screen. Every word you type stays yours. No servers. No logs. No tracking. 🔒 HOW IT WORKS Type your message → tap Enter → it's instantly encrypted using AES-128 military-grade encryption and disguised as symbols or emojis. The recipient uses EncryptBoard to decrypt it back to plain text. Works in WhatsApp, Telegram, Instagram, Gmail — any app. 🛡️ FEATURES • On-device AES-128-CBC encryption with HMAC-SHA256 integrity check • Messages disguise as symbols ✦⊕☍, emojis 🌙🚀🔮, or natural-looking cover text • Group passphrases — set a shared secret key with your contacts • Floating ENC/DEC bubble — encrypt/decrypt without switching keyboards • Quick Translator — paste cipher, decrypt, copy reply in one screen • Glide typing support • Word prediction • AI assistant panel (ChatGPT) • Zero internet required for encryption — fully offline • No account, no sign-up, no data collection 🔐 ENCRYPTION DETAILS • Algorithm: AES-128-CBC • Integrity: HMAC-SHA256 • Key derivation: SHA-256 of your passphrase • IV: Random per message (SecureRandom) • All crypto runs locally on your device 💬 WORKS IN ANY APP EncryptBoard is a full Android system keyboard. Switch to it once and use it everywhere — WhatsApp, Telegram, Signal, iMessage (via Android), Gmail, Instagram DMs, SMS, and more. ⚡ QUICK TOOLS Not ready to switch keyboards yet? Use the Quick Translator screen to paste a cipher message, decrypt it, type your reply, encrypt it, and copy — all in one place without changing your keyboard. 👥 GROUP ENCRYPTION Set a custom passphrase that you share with your group. Anyone with EncryptBoard and the same passphrase can read your encrypted messages. Change the passphrase anytime to create new private subgroups. 🔍 COVER PROFILES Choose how your encrypted text looks: • Symbols — futuristic glyphs ✦⟟☍∆ • Emojis — cosmic emoji sequences 🌙✨🚀 • Cricket scores, shopping lists, movie reviews, tech logs, and more — your encrypted message looks like normal text 📱 PERMISSIONS EXPLAINED • Keyboard (InputMethodService) — required to function as a keyboard • Display over other apps — optional, for the floating bubble • Internet — only for the optional AI assistant panel • Notifications — only while the floating bubble is active No READ_CONTACTS. No location. No microphone. No camera. EncryptBoard is open source. Your privacy is the product.