ZKETA - Zero Knowledge ETA Verification

A zero-knowledge proof system for verifying estimated time of arrival (ETA) claims without revealing location data.

Prerequisites

Before you begin, ensure you have the following installed:

• Node.js v16 or higher
• Git
• Rust (for Circom)
• Circom compiler
• MetaMask browser extension

Installing Circom

1. Install Rust: curl --proto '=https' --tlsv1.2 https://sh.rustup.rs -sSf | sh

2. Install Circom compiler: git clone https://github.com/iden3/circom.git cd circom cargo build --release cargo install --path circom

Project Setup

1. Clone the repository: git clone cd zketa

2. Install dependencies: npm install

3. Create a .env.local file: REACT_APP_INFURA_URL=https://sepolia.infura.io/v3/YOUR-INFURA-PROJECT-ID REACT_APP_RELAYER_PRIVATE_KEY=your-wallet-private-key

Create a '.env' file: INFURA_URL= RELAYER_PRIVATE_KEY=

Development Workflow

1. Compile the zero-knowledge circuit: npm run compile:circuit

This command will:

• Download the Powers of Tau file
• Compile the circuit
• Generate proving keys

2. Start a local Hardhat node in a terminal:

npm run node

3. In a new terminal, deploy the contracts:

npm run deploy:contracts 4. Start the React development server: npm start