https://github.com/FialkaApp/Fialka-Android/compare/v3.0-stable...v4.0.1/

End-to-end encrypted chat for Android — free, anonymous, serverless. Messages are encrypted BEFORE they are sent. No one can read them. No central server. No phone number. No email. No Google. Just a key and Tor. ⚡ At a Glance 🔐 Crypto - 1 Ed25519 seed → everything: identity, .onion, X25519, ML-KEM, fingerprint - PQXDH: X25519 + ML-KEM-1024 (post-quantum hybrid) - ML-DSA-44: PQ signature on handshake - SPQR: periodic PQ re-encapsulation (every 10 msgs) - AES-256-GCM / ChaCha20-Poly1305 (auto) + Double Ratchet with PFS + healing - Fingerprint emojis: 96-bit anti-MITM + QR code scanner - BIP-39 backup (24 words) → restores entire identity - One-shot photos: view once, 2-phase secure deletion - Seed in Android Keystore (StrongBox when available) - Encrypted local DB: SQLCipher - Message padding: fixed-size (256/1K/4K/16K) - Dummy traffic: per-conversation cover traffic - E2E file sharing: AES-256-GCM (P2P transfer via Tor) - Ed25519 signatures per-message anti-forgery - Zero Google, zero Firebase — full P2P via Tor Hidden Services 🎨 UI/UX - Material Design 3 — full migration of all 5 themes - 5 themes: Midnight · Hacker · Phantom · Aurora · Daylight - Fluid animations — transitions, bubbles, cascade - Inline attachment icons — Session-style, slide-up animation - Tor bootstrap screen — Tor/Normal choice, animated progress, 5 themes - Scrollable toolbar + auto-hide FAB - Dynamic bubbles colored by theme - App Lock PIN + biometrics - Disappearing messages: 30s → 1 month - One-shot photos: view once 🔥 ✨ Features 🔒 Security & Crypto Feature Details 🌱 1 Seed → Everything Ed25519 seed → identity, .onion, X25519, ML-KEM, fingerprint 🔐 E2E Encryption PQXDH: X25519 + ML-KEM-1024 + AES-256-GCM / ChaCha20-Poly1305 + SPQR 🤝 ML-DSA-44 Handshake Post-quantum signature on session establishment 🔄 Perfect Forward Secrecy Double Ratchet (DH + KDF chains) 🔏 Fingerprint emojis + QR 96-bit, 16 emojis + QR code SHA-256, built-in scanner 🧅 Tor P2P .onion to .onion — zero relay, zero middleman 📬 Fialka Mailbox Distinct server mode (requires 2 phones) — 4 modes (Personal, Private, Public) — E2E store/transit/purge — ZERO decryption 🛡️ DeviceSecurityManager StrongBox detection, MAXIMUM/STANDARD level 🕵️ Sealed Sender Tor Hidden Services — recipient cannot see sender IP 🔑 Keystore-backed Ed25519 seed in Android Keystore (StrongBox when available) 🗄️ SQLCipher Room DB encrypted with AES-256 🧹 Memory zeroing Intermediate keys filled with zeros 📏 Message padding Fixed-size (256/1K/4K/16K) anti-traffic analysis 👻 Dummy traffic Periodic cover messages (configurable toggle) 📎 E2E file sharing Per-file AES-256-GCM, P2P transfer via Tor ✍️ Ed25519 Signatures Every message signed, ✅/⚠️ badge anti-forgery 📸 One-shot photos View once (sender + receiver), 2-phase secure deletion 🚫 Zero Google No Firebase, no FCM, no Google services 💬 Messaging Feature Details 📷 QR Code Scan → auto-fill public key & nickname (deep link v2) 📨 Contact requests Invite → notification → accept/reject 🔴 Unread messages Badge counter + separator in chat 🔄 Real-time Receive messages even in background (Tor P2P) 🔔 Push notifications UnifiedPush + ntfy.sh, zero message content ⏱️ Disappearing msgs 10 durations (30s → 1 mo) 📁 E2E file sharing AES-256-GCM encrypted, P2P via Tor 👻 Dummy traffic Indistinguishable cover messages to mask activity 📬 Fialka Mailbox Distinct server mode (requires 2 phones) — 4 modes — E2E store/transit/purge — ZERO decryption �💀 Dead convo detection Auto-detect + clean up + re-invite 🎨 Interface Feature Details 🌙 5 themes Midnight · Hacker · Phantom · Aurora · Daylight ✨ Animations Slide/fade transitions, animated bubbles 📜 Scrollable toolbar Collapses on scroll, snaps back 🔽 Auto-hide FAB Hides when scrolling down 🫧 Dynamic bubbles Colors adapt to the active theme 🎭 Visual selector MaterialCardView grid with preview 📎 Inline icons Session-style attachment (file/photo/camera) animated 🔒 Protection Feature Details 🔒 App Lock 6-digit PIN + opt-in biometrics ⏰ Auto-lock Configurable timeout (5s → 5min) 🔑 BIP-39 Backup 24 words to backup identity key ♻️ Restore Autocomplete 24-word grid + recover on new device 🗑️ Full deletion Wipes local data + Mailbox + signing keys 📵 Anonymous Zero number, zero email, zero Google, zero tracking 🌍 Supported Languages - French ⚠️ Disclaimer Fialka is a tool. The developers do not operate any infrastructure, do not store any user data, and cannot access any messages. The cryptographic implementation has NOT been audited by a third-party security firm. No guarantee of absolute security is provided. Use of this software is at your own risk and under your sole responsibility. License Fialka is licensed under the GNU General Public License v3.0.