How Our Private Notes App Works
End-to-End Encrypted Notes
EncryptedNote uses XChaCha20-Poly1305, a state-of-the-art encryption algorithm, to secure your private notes. All encryption and decryption happens directly in your browser, which means your content is never transmitted or stored in an unencrypted form.
3-Click Secure Note Sharing
Create Your Private Note
Type your message and choose self-destruct options for your temporary notes (time-based expiration and view limits).
Share Securely
After creating your encrypted note, you'll receive a shareable link and a separate decryption key. Share these separately for maximum security.
Recipient Views and Note Self-Destructs
The recipient opens the link and enters the decryption key to view the private note. Once viewed (or when it expires), the note is permanently deleted.
Security Features of Our Secure Notes App
- Private notes are encrypted with XChaCha20-Poly1305 encryption
- End-to-end encryption happens entirely in your browser
- No user accounts or personal information required
- Self-destructing notes disappear after being viewed once
- Temporary notes with time-based expiration ensure notes don't remain accessible indefinitely
- Decryption keys are never stored on our servers
- Mobile-friendly design works on iPhone and all devices
Technical Implementation
Our encrypted notes app is built with Next.js, TypeScript, and Tailwind CSS. We use libsodium-wrappers for client-side cryptography and Firebase for secure, temporary storage of encrypted notes. The application is designed to be fast, responsive, and accessible on all devices, making it easy to create private notes on iPhone or any other mobile device.