Защищённые заметки: PIN-шифрование AES-256 (Android офлайн, один файл)
Seller: SirBob
Price: 1.85 USD
Available. The final price depends on the selected options and is checked before payment.
Product description
📦 FORMAT · VERSION · GUARANTEE — quick overview before buying
- Contents: ZIP: single HTML file + README
- Version: September 2026
- Requirements: Any browser, no install, works offline
- Delivery: automatic, by e-mail right after payment
- Guarantee: the product matches its description. If anything is wrong — write a personal message, we'll sort it out or refund you.
- Terms: for personal use; resale is prohibited.
PERSONAL NOTES NO ONE CAN READ WITHOUT YOUR PIN
Access codes, passwords, private stuff — encrypted with AES-256-GCM using a key derived from your PIN (PBKDF2-SHA256, 100,000 iterations, random salt). The PIN is stored nowhere: the device holds ONLY ciphertext — no titles, no texts, no PIN. Lose the phone — nobody reads your data.
WHAT'S INSIDE (a single index.html file):
- Real cryptography on the browser's built-in WebCrypto (no homemade math)
- Every note gets its own random IV: identical texts → different ciphertext
- Wrong PIN → GCM tag rejects decryption (not "corrupted data" — just no access)
- Notes: title + body, add, edit with re-encryption, delete
- Search over titles and bodies (in memory, decrypted)
- Idle auto-lock: 0–240 minutes (default 5) + a "Lock now" button
- Dark and light themes
- Data stays on your device: no network, no cloud, no sign-up
HOW IT DIFFERS FROM "PHONE NOTES":
- Stock notes store plain text and often sync to a cloud
- Here data never leaves the device and is unreadable without the PIN even with full file access
IMPORTANT: forgot the PIN — there is no recovery (real privacy has no "security questions")
FOR WHOM:
- Codes/passwords/keys that must never hit a cloud
- Private notes on the phone you carry everywhere
- Anything that should live "on this device and nowhere else"
VERIFIED BEFORE SALE:
- 12 crypto selftests: cyrillic+emoji roundtrip, unique IV, foreign key/salt rejected, tampered ciphertext rejected, key-derivation determinism, 100 KB
- 13 live DOM tests: PIN creation errors, adding notes, NO plaintext in localStorage, search, reload → lock, wrong/right PIN, edit, delete
- Screenshots are from the real working app
Guarantee: replacement or refund. The file is delivered automatically right after payment.