Sky Send

Abstract

1. Introduction

SkySend is a minimalist, self-hostable file and note sharing service with end-to-end encryption. Files and notes are encrypted entirely in the browser using AES-256-GCM before they ever reach the server - the server stores only encrypted blobs and never has access to the decryption key. No accounts, no tracking, no analytics just Open Source.

End-to-end encrypted, self-hostable file and note sharing service built for speed and security.

This Project is community ready to get self hosted and for those who don't want or could not host their own instance, there are public instances available. If you want to make the internet safer, you can host your own instance and add it to the public instances list by creating a Issue with your instance details or a PR Instances List.

2. Objective

Minimalist, end-to-end encrypted, self-hostable file and note sharing. Zero-knowledge server - files and notes are encrypted in the browser before upload. No accounts, no telemetry, built for speed and security.

This project demonstrates how TypeScript, Docker, React can be applied to a real-world Cybersecurity & Ethical Hacking problem.

4. Technology Stack

5. System Requirements

General requirements for this technology stack — check the README for exact versions.

• Node.js (LTS) and npm / yarn / pnpm
• VS Code or any code editor
• Git (to clone the repository)

6. Installation & Setup

git clone https://github.com/Skyfay/SkySend.git
cd SkySend

1. "3000:3000"
2. ./data:/data
3. ./uploads:/uploads
4. BASE_URL=http://localhost:3000

# docker-compose.yml
services:
  skysend:
    image: skyfay/skysend:latest
    container_name: skysend
    restart: always
    ports:
      - "3000:3000"
    volumes:
      - ./data:/data
      - ./uploads:/uploads
    environment:
      - BASE_URL=http://localhost:3000
      # All environment variables: https://docs.skysend.app/user-guide/configuration/environment-variables
      # There are a lot of customization options available, so make sure to check the documentation for more details.

docker compose up -d

Full setup instructions are in the project README.

7. Future Enhancements

Suggested extensions you can add to make this your own project.

• Add logging and alert notifications (email / Telegram)
• Write a threat model document for the tool
• Package it with Docker for safe lab testing

8. Viva / Review Questions

Common questions examiners ask for projects in this domain.

1. Which threat or attack does this project defend against?
2. What detection or protection technique is used and what are its limits?
3. How are false positives and false negatives handled?
4. Which cryptographic algorithms or security standards are involved?
5. What legal and ethical rules apply when testing a tool like this?

9. Source Code & License

This project is developed by Skyfay and published on GitHub under the GNU Affero General Public License v3.0. Please follow the license terms and credit the original author when you use or modify this code.