securevoting-eth: Secure Electronic Voting System

An Ethereum Blockchain based Secure Voting Application for use in Pakistan's Electrocal Process.

Demo

A simple working of the application (the software part) is shown here. For hardware part, video can be provided on request. Only main gifs are shown, rest can be seen in the /screens folder.

1. Login and Loading of Data

2. Governance: Register Candidate

3. Governance: Register Voter

4. Governance: Register Supervisor

5. Voter: Cast Vote

6. Governance: View Results

Development

Pre-requisites

1. Install Node.js.
2. Install yarn package manager

   npm install -g yarn

3. Clone the repository

   git clone https://github.com/fayzanx/securevoting-eth.git
   cd securevoting-eth

Ethereum DApp and Frontend

1. Install dependencies

   cd dapp
   yarn

2. Start the front-end development server

   yarn start

3. Start ethereum blockchain development mode

   truffle compile
   truffle develop

Express Server

1. Install dependencies

   cd server
   yarn

2. Rename the .env.example file to .env and edit the environment variables

   PORT = //add port number here
   CONNECTION_URL = "MONGO DATABASE URL"
   

3. Start the server

   yarn start

Starting Blockchain Network

1. Make a genesis block from puppeth. Then copy it in all nodes and initialize geth directory using it.

2. Start geth console geth --datadir ~/Dapp/ethTestL --rpc --rpcport "8777" --rpccorsdomain "*" --networkid 1900 --nodiscover --allow-insecure-unlock --unlock "0xa8ffe634fff5d4669a277d74105f2d8e10dd50f3" --password "passwords.txt" --mine console Instead of account, you can also give a txt file containing accounts. In passwords.txt, give their comma seperated passwords. In --datadir, give directory of your project folder, otherwise it may select some other and not present working directory.

3. Now add peers to make network. You can either give --bootnodes flag in command or add it manually. You can also give enode of peer to add with its ip admin.addPeer("enode://ced5d2fd0fafae212e1ab761506042703201a42990946b72dd9f4643e6d194598287c856b89f548abc2abe0bbecc41f71f63fe5a6e0e91679b8e2b8a542b0cff@192.168.0.103:30303?discport=0") You can check if its added by using admin.peers

4. Now you need to link it with truffle to do work easily. Use truffle console --network <network name> When geth network is started, this command will link truffle the geth network. But before using this command, add following in networks field of truffle-config.js

       host: "127.0.0.1",       //or any
       port: 8777,              // Custom port specified in geth --rpcport
       network_id: 1342,        // Custom network specified in geth --networkid
       gas: 5335668,            // Gas sent with each transaction (default: ~6700000)
       gasPrice: 20000000000,   // 20 gwei (in wei) (default: 100 gwei)
     },```
   

5. Great! Now you can deploy your contracts.

How to use Metamask in custom network

Transactions in this network can made only by the accounts that are imported in your custom network. To import them in Metamask, first open Metamask in another tab, otherwise it won't work. Then goto Metamask -> Import -> Select Json file -> Choose UTC file in ../geth/keystore folder. Give password of your account and it will be imported after a while.

Procedure

Authorization Levels

• AL-1 Election Management Level (Contract Owner)
• AL-2 Polling Booth Management Level (Agent)

Proposed flow

1. AL-1 will register candidates constituency wise and start election window
2. An AL-2 person will unlock the machine and the app with their sign in info, ethereum wallet (MetaMask)
3. The AL-2 person will then start the voting process by navigating to /portal
4. The voter will now enter CNIC, verify via biometric and vote the desired candidate
5. AL-2 will end the voting process for the booth (not implemented)
6. AL-1 will generate results by navigating to /manage/results