Smart 2FA Manager ^v1.0.1

• AES-256-GCM Encryption — industry-standard encryption for your secrets
• SHA-512 Key Derivation — strong password hashing
• QR Code Scanning — quickly add services by scanning QR codes
• Real-time Search — filter services by name instantly
• One-Tap Code Copying — copy TOTP codes with a single tap
• Offline Operation — no internet connection required
• Material Design UI — clean and intuitive interface
• Local Storage — data stored in Documents/.2fa/secrets.enc
• Master Password Protection — all data encrypted with your master password
• Interactive Tooltips — long press any button to see its function

Encryption

• Algorithm: AES-256-GCM (Galois/Counter Mode)
• Key Derivation: SHA-512
• IV: Random 12-byte initialization vector per encryption

Data Storage

• Location: Documents/.2fa/secrets.enc
• Format: Encrypted JSON with service:secret pairs
• No Internet — app never sends data over the network
• Local Only — all secrets remain on your device

Master Password

• Never stored — password is only used to derive encryption key
• No recovery — if forgotten, secrets cannot be recovered
• Local only — password never leaves your device

Main Screen

• Service Cards — list of all your 2FA services
• TOTP Code — current 6-digit code with countdown timer
• Color Coding — Blue (normal), Orange (10 sec left), Red (3 sec left)
• Service Counter — shows number of services in toolbar

Toolbar Buttons

• Search — opens search bar to filter services
• Show All Tips — displays tooltips for all buttons
• Lock — lock the app and return to password screen

Service Card Buttons

• Copy — copy current TOTP code to clipboard
• Secret — view secret key (requires master password)
• Delete — remove service

• Language: Kotlin
• Platform: Android 8.0+
• Encryption: AES-256-GCM, SHA-512
• TOTP: RFC 6238, HMAC-SHA1
• QR Scanner: CameraX
• License: BSD 3-Clause

Cross-platform 2FA Management Ecosystem: