Secure Send

End-to-end encrypted file sharing web application.

Features

• End-to-end encryption: Files are encrypted in your browser before upload. Only the recipient with the link and password can decrypt.
• Modern UI: Clean, responsive upload interface with header, footer, and card-style form.
• Chunked uploads: Large files are split and uploaded in encrypted chunks.
• No account required: Share files securely without registration.
• Configurable timeouts: Set how long files are available for download.

Quick Start

1. Backend (API)

• Requires Python 3.8+
• Install dependencies:

  pip install ./api ./webapp

2. Frontend (Webapp)

• Requires Node.js (v16+ recommended)
• Install dependencies:

  cd webapp
  npm install

• Build the frontend:

  npm run build

• Serve the frontend (for development):

  npm run serve

  The webapp will be available at http://localhost:8080

3. Access the App

• Open your browser and go to http://localhost:8080
• Upload a file, set a time limit, and share the generated link and password with your recipient.

Project Structure

• api/ — Python backend (Sanic web server, file storage, API)
• webapp/ — Frontend (TypeScript, Choo, Bootstrap)
  • src/gui/ — Main GUI code
  • dist_web/ — Built static files (served to users)
• README.md — This file

Customization

• Logo: Place your SVG logo at webapp/dist_web/logo.svg to appear in the header.
• GitHub/Privacy links: Edit src/gui/upload.ts to update header/footer links.

Security

• Files and metadata are encrypted client-side using strong cryptography.
• Only encrypted data is sent to the backend; the server never sees your keys or plaintext.
• Each upload generates a unique download link and password.

Development

• Frontend uses Choo and Bootstrap for a modern, responsive UI.
• Backend uses Sanic (Python) for async file handling and static file serving.
• See webapp/package.json for available npm scripts.