joeywang4 / Hybrid-Voting

An E-Voting system based on traditional DB and blockchain

Hybrid-Voting

• frontend: The web interface for voting
• backend: Manages user's information and signature public keys
• helper: A python tool that helps users do some cryptography calculations
• contract: Solidity contracts that manage elections

Installation

Frontend

Use npm to install and run. Our web app requires Metamask to make transactions and connect to Ethereum network. Be sure to install Metamask to your browser before using.

cd frontend
npm install
npm start

Backend

Backend requires a MongoDB database, which can be deployed free on cloud.mongodb.com. After the MongoDB instance is deployed, the user can paste its URI to the config file .env.
Also, user needs to add JWT secret for token signature, RPC address to connect Ethereum network, and helper URL to connect to Python helper.

# Create this file at backend/.env
DB_URL="YOUR_URI"
JWT_SECRET="TOKEN_SECRET"
RPC_ADDR="RPC_URL"
HELPER_ADDR="HELPER_URL"

After that, use npm to install and run.

cd backend
npm install
npm start

Helper

Install the required modules, then run main.py.

cd helper
pip install -r requirements.txt
python main.py

Contract

We deployed out contracts on Ropsten test net. ElectionMaster.sol is at 0x76686526759D735e6F8152323f2532b0a62FEA08. verify.sol is at 0xBf9204329CF66ABfF23984fC21CA5710E08D397e.