I've been working on Crypted - a secure platform for sharing sensitive data that automatically self-destructs after being viewed.

I'm a dev by trade, and I needed a solution to share sensitive data. Existing solutions either:

- Store your data on their servers (even if "encrypted");

- Require downloads/apps that non-tech people won't use;

- Cost way too much for occasional use;

- Have terrible UX that makes sharing painful;

The technical bits:

- Uses Web Crypto API for encryption (no sketchy third-party libraries);

- Two encryption modes:

- Symmetric (AES-256-GCM): Decryption keys embedded in URL fragments (#key) that never hit the server; also password encrypted method for premium user;

- Asymmetric (RSA-OAEP): Public/private key pairs for sending data without sharing passwords;

- Generate your own RSA key pairs in-browser - private keys never leave your device and are encrypted with your password;

- Send encrypted messages to people using their public keys - no need to share secret links;

- Messages self-destruct based on time or view count;

- Supports files up to 100MB (also encrypted);

- Zero-knowledge architecture - no one can't read your stuff even with server access, not even me;

Real use cases I've seen:

- Lawyers sharing case details with clients;

- HR sending salary info to employees;

- Developers sharing API keys, passwords temporarily;

- Anyone who's tired of putting sensitive stuff in regular email;

The free tier covers most personal use cases, and there's no tracking or data collection on anonymous users. I've been using it myself, this app came from my need to share sensitive data.

I'm not trying to get rich off this - more just scratching my own itch and hoping it helps other privacy-conscious folks.

Thanks for reading this and I would love your feedback!