Encode Group-9: gender-pay-equality-zk

Gender Pay Equality ZK-Proof System

This repository implements a Zero-Knowledge Proof system to verify salary equality without revealing actual salaries, helping identify gender pay disparities while maintaining privacy.

Overview

The system allows two parties to prove whether their salaries are equal without revealing the actual amounts, using ZK-SNARKs technology.

Prerequisites

• Node.js v14+
• Hardhat
• circom 2.0
• snarkjs

Project Structure

gender-pay-equality-zk/ │ ├── contracts/ │ └── SalaryComparator.sol │ ├── circuits/ │ └── salary_compare.circom │ ├── scripts/ │ ├── deploy.ts │ └── generate_proof.js │ ├── test/ │ └── salary_compare.test.js │ ├── package.json ├── hardhat.config.ts └── README.md

Installation:

bash git clone https://github.com/yourusername/gender-pay-equality-zk mkdir gender-pay-equality-zk cd gender-pay-equality-zk npm init -y npm install npm install hardhat @nomiclabs/hardhat-ethers ethers circom snarkjs chai

bash Compile the circuit circom circuits/salary_compare.circom --r1cs --wasm --sym Generate the proving key snarkjs groth16 setup circuit.r1cs pot12_final.ptau circuit_final.zkey

bash npx hardhat run scripts/deploy.ts --network

Generate a proof node scripts/generate_proof.js

Verify on-chain npx hardhat test

javascript // Generate proof for two salaries const { proof, publicSignals } = await generateProof(100000, 100000); // Verify on-chain const result = await comparator.verifyProof(proof, publicSignals); console.log("Salaries are equal:", result);