A Blockchain-based Data Sharing Scheme using Attribute-Based Encryption and Semi-Fungible Tokens - Smart Contracts

This repository contains the smart contracts for a blockchain-based data-sharing scheme utilizing Ciphertext-Policy Attribute-Based Encryption (CP-ABE) and semi-fungible tokens.

Project Structure

• contracts: Contains a Rust package wrapped as WebAssembly. The compiled WebAssembly files are located in the public directory.
• evaluation: Holds all the files necessary to build and run the web application, including the client-side logic and the key-generation server.
• scripts: Holds all the files necessary to build and run the web application, including the client-side logic and the key-generation server.

Build Instructions

1. Install dependencies: Run pnpm i to install the required Node.js packages.
2. Compile the smart contracts: Run pnpm compile to compile the smart contracts in the repositry.
3. Compile the smart contracts: To deply a certain smart contract, run its corresponding deploy script, for example pnpm hardhat run .\scripts\deploy\deployAttributeToken.ts.

Requirements

Before starting, ensure you have the following installed:

• Node.js: Required for npm packages and running Node.js commands.
• pnpm: A fast, efficient Node.js package manager.

Envionrment Variables

You must have the following environment variables in a .env file:

• SEPOLIA_URL: An API url to connect to the sepolia blockchain, i.e., one provided by an Infura account
• PRIVATE_KEY: The private key of from a cryptorgraphic wallet, i.e., a metamask private key