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Devault

A Blockchain-based, self-hosted, and end-to-end encrypted cloud storage.

Youtube Video · Ropsten Faucet · Live Instance

If you have any improvements, do not hesitate to post an issue or make a pull request.

Your support is very much appreciated! star on GitHub

⚠️ Active development. Unstable. Breaking changes. You get the point. ⚠️

🎉 About the Project

Devault stands for DEcentralized VAULT

📷 Screenshots

🎨 Color Reference

🎤 What is Devault

Devault is a decentralized, self-hosted, and end-to-end encrypted alternative to proprietary and centralized cloud storage.

🔍 Why Devault

👎 The Problem with Traditional Cloud Storage

Data loss
Data hack
Data surveillance

👍 The Solution with Devault

No third party can access your files or prevent you from accessing them.
It prevents the censorship of the data.
It's nearly impossible to hack AES-256-CBC encryption or even the blockchain.
It prevents the data from being tampered with.
It breaks apart the users’ files and distributes them across multiple nodes on the network.
The smart contract is upgradeable, so the data is never lost when there is a bug fix.

🙈 Features

Decentralized
Blockchain based
End-to-end encryption/decryption
Self-hosted
Open-source

🔐 How Devault Works

When you upload a file:

The file gets encrypted using AES-256-CBC encryption.
The encrypted file is split into pieces.
The chunks are distributed across the network nodes.
The root hash will be stored in your wallet on the blockchain.

When you download a file:

The root hash will be retrieved from your wallet on the blockchain.
The root hash will be used to retrieve the file chunks.
The retrieved chucks will be combined and decrypted to represent the original file.

🛠️ Tech Stack and Tools

The tools used in this project.

	Tool	Description
	Neovim	IDE
	Next.js	Full stack framework
	Hardhat	Framework for developing, testing, linting and deploying smart contracts
	Solidity	The smart contract language
	Metamask	Web3 provider
	Ethers.js	Library for interacting with the Ethereum blockchain
	Ropsten	Testnet for deploying smart contracts
	Infura	Blockchain node as a service to deploy the smart contracts through it
	IPFS	Storing, retrieving and sharing the encrypted files
	Jest	Unit testing and code coverage
	Etherscan	Verifying transactions and blocks
	Vercel	Production deployment
	Docker	Deploying and shipping the app for production

🪜 Source Code Directory Structure

A quick look at the top-level files and directories:

.
├── __tests__
├── artifacts
├── components
├── contracts
├── docker-compose.yml
├── Dockerfile
├── docs
├── hardhat.config.js
├── jest.config.js
├── next.config.js
├── out
├── package.json
├── pages
├── public
├── scripts
├── SECURITY.md
├── styles
├── .github
└── utils

1. __tests__: contains all the unit tests
1. artifacts: produced by hardhat after compiling the smart contracts and containing smart contracts ABIs.
1. components: contains all the React components.
1. contracts: contains all the smart contracts source code.
1. docker-compose.yml: docker-compose file for serving the production build.
1. Dockerfile: docker file for building and running next.js app used by docker-compose
1. docs: contains all the source code documentation.
1. hardhat.config.js: hardhat config file
1. jest.config.js: jest config file
1. next.config.js: next.js config file
1. out: produced by npm run build2 and contains a static site.
1. package.json: npm package manager config file
1. pages: contains all pages routes
1. public: contains all the assets (ex. images, fonts...)
1. scripts: contains all the scripts used to automate the development process (ex. deploy, logger...)
1. SECURITY: defining which version receives updates.
1. styles: contains all page styles.
1. .github: contains automated workflows (CI/CD).
1. utils: contains all javascript functions used by other components.

🚴‍♂️ Getting Started

🟡 Prerequisites

📦 Package Manager

This project uses npm as a package manager

pacman -S npm

🔑 Environment Variables

To run this project, you will need to add the following environment variables to your .env file

PRIVATE_KEY ROPSTEN_URL

To generate those keys you will need to:

1. create infura account
1. create a new Ethereum node
1. copy the private key to .env
1. copy ropsten url to .env

SMART_CONTRACT_ADDRESS_ROPSTEN

This variable will be set later by the deployment script

🔧 Run for Development

Clone the repo

git clone https://github.com/AbdeltwabMF/devault.git
cd devault

Install dependencies

npm ci

Run the development server and local blockchain node.

npm run deploy localhost

Navigate to http://localhost:3000

🟢 Now you're good to go

💉 Run the Tests

Run the smart contracts test

npx hardhat test

Generates a code coverage report for smart contracts test

npx hardhat coverage

Run the whole project tests

npm run test

✨ Deployment | Hosting

Deploy using source code and docker

git clone https://github.com/AbdeltwabMF/devault.git
cd devault

docker-compose up --build --force-recreate -d

Deploy using official docker image hosted on docker hub

docker container run -p 3000:3000 -d abdeltwabmf/devault

Deploy using vercel

npm i -g vercel

vercel --prod

Deploy using static site generation

The generated static site will be in the out directory (ex. use nginx to serve it)

npm run build2

🤔 Usage

1. Create an Ethereum wallet using metamask extension.
1. Open devault website.
1. Click connect wallet and follow the steps.
1. Make sure you're on the ropsten network. (settings > advanced > show test networks)
1. Go to ropsten faucet and paste your address to get some ethers. (used for transactions)
1. Navigate to The Vault tab.
1. Pick a file and press upload.
1. Give a passphrase to encrypt the file. (you can use different passphrases for different files).
1. Once the file is successfully uploaded it will appear on the same page with the option to download.
1. When downloading give the same passphrase you entered when uploading the file.
1. The file is now being downloaded.