9 |
10 | [](https://opensource.org/licenses/MIT)
11 |
12 |
A Blockchain-based voting system that aims to address many of the problems faced in today’s elections and promises new opportunities, from securing transparency, making the voting process more accessible, affordable, and safe.
13 |
14 |
15 |
16 | -----------------------------------------
17 | ### Inspiration
18 |
19 | * Around the time of TSEC hackathon, the news was filled with articles and debates claiming that the voting machines were rigged in the recently conducted provincial elections in the state of UP in India. Ballot and EVM are the only methods that have been used for voting for years now, and each has its own drawbacks.
20 |
21 | * We felt that it is imperative to develop a better mechanism for voting. So during the hackathon, we developed a blockchain-based E-voting system. This system retains the benefits of the traditional methods such as anonymity of voters, enables real-time vote counting, and decentralized control, which prevents unfair practices.
22 |
23 | ------------------------------------------
24 | ### Features
25 |
26 | - `Decentralized Control` : Lesser chance of unfair practices and errors due to **Immutability** and **Transparency**
27 | - `Reduced complications` : As compared to EVM or Ballot, complications are reduced
28 | - `Faster Results` : Enables real-time vote counting
29 | - `Retains benefits of the traditional systems` : Ensures anonymity of voters and provides improved security
30 |
31 | ------------------------------------------
32 | ### Demo
33 |
330 |
340 |
341 |
342 |
343 |
344 |
345 |
346 |
347 |
348 |
349 |
350 |
351 |
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/Source code/Candidate/src/js/app.js:
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1 | var candidatesResults;
2 |
3 | App = {
4 | web3Provider: null,
5 | contracts: {},
6 | account: '0x0',
7 | hasVoted: false,
8 |
9 | init: function() {
10 | return App.initWeb3();
11 | },
12 |
13 | initWeb3: function() {
14 | // TODO: refactor conditional
15 | if (typeof web3 !== 'undefined') {
16 | // If a web3 instance is already provided by Meta Mask.
17 | App.web3Provider = web3.currentProvider;
18 | web3 = new Web3(web3.currentProvider);
19 | } else {
20 | // Specify default instance if no web3 instance provided
21 | App.web3Provider = new Web3.providers.HttpProvider('http://localhost:7545');
22 | web3 = new Web3(App.web3Provider);
23 | }
24 | return App.initContract();
25 | },
26 |
27 | initContract: function() {
28 | $.getJSON("Candidate.json", function(election) {
29 | // Instantiate a new truffle contract from the artifact
30 | App.contracts.Candidate = TruffleContract(election);
31 | // Connect provider to interact with contract
32 | App.contracts.Candidate.setProvider(App.web3Provider);
33 |
34 | // App.listenForEvents();
35 |
36 | return App.render();
37 | });
38 | },
39 |
40 | // // Listen for events emitted from the contract
41 | // listenForEvents: function() {
42 |
43 | // App.contracts.Candidate.deployed().then(function(instance) {
44 | // // Restart Chrome if you are unable to receive this event
45 | // // This is a known issue with Metamask
46 | // // https://github.com/MetaMask/metamask-extension/issues/2393
47 | // instance.votedEvent({}, {
48 | // fromBlock: 0,
49 | // toBlock: 'latest'
50 | // }).watch(function(error, event) {
51 | // console.log("event triggered", event)
52 | // // Reload when a new vote is recorded
53 |
54 | // });
55 | // });
56 | // return App.render();
57 | // },
58 |
59 | render: function() {
60 | var candidateInstance;
61 | var done=$("#done");
62 | var main=$("#main");
63 | main.show();
64 | done.hide();
65 |
66 | // Load account data
67 | web3.eth.getCoinbase(function(err, account) {
68 | if (err === null) {
69 | App.account = account;
70 | $("#accountAddress").html("Your Account: " + account);
71 | }
72 | });
73 |
74 | // Load contract data
75 | App.contracts.Candidate.deployed().then(function(instance) { //listing candidates
76 | candidateInstance = instance;
77 | return candidateInstance.candidatesCount();
78 | }).then(function(candidatesCount) {
79 | candidatesResults = [];
80 | candidatesResults.splice(0,candidatesResults.length);
81 |
82 | for (var i = 1; i <= candidatesCount; i++) {
83 | candidateInstance.candidates(i).then(function(candidate) {
84 | // var id = candidate[0];
85 | // var name = candidate[1];
86 |
87 | var aadhar = candidate[4];
88 | // Render candidate Result
89 | candidatesResults.push(aadhar);
90 | console.log(aadhar);
91 |
92 | });
93 | }
94 |
95 | }).then(function(isCandidate) {
96 | if(isCandidate) {
97 | main.hide();
98 | done.show();
99 | }
100 | else
101 | {
102 | main.show();
103 | done.hide();
104 | }
105 | }).catch(function(error) {
106 | console.warn(error);
107 | });
108 | },
109 |
110 |
111 |
112 |
113 | AddCandidate: function() {
114 | var candidateName = $('#name').val();
115 | var candidateAge = $('#age').val();
116 | var candidateGender = $('#gen').val();
117 | var candidateVoterId = $('#vtrid').val();
118 | var candidateAdharId = $('#adrid').val();
119 | var candidateCrimeFile = $('#cmf').val();
120 | var candidateItrFile = $('#itr').val();
121 | var candidateimgFile = $('#imgf').val();
122 |
123 | // console.log(candidateName + " " + candidateAge + " " + candidateGender + " " + candidateVoterId + " " + candidateAdharId + " " + candidateCrimeFile + " " + candidateItrFile + " " + candidateimgFile);
124 |
125 | App.contracts.Candidate.deployed().then(function(instance) {
126 | console.log("in");
127 | var flag=true;
128 | for(var i=0;i<=candidatesResults.length;i++){
129 | if (candidatesResults[i] === candidateAdharId )
130 | flag=false;
131 | }
132 | if (flag == false){
133 | alert("Candidate Already Registered");
134 | }
135 | else{
136 | return instance.addCandidate(candidateName,candidateAge,candidateVoterId,candidateAdharId,true,true, { from: App.account });
137 | }
138 | }).then(function(result) {
139 | var done = $("#done");
140 | $("#main").hide();
141 | done.show();
142 | }).catch(function(err) {
143 | console.error(err);
144 | });
145 |
146 | },
147 | };
148 |
149 | // loadJs: function()
150 |
151 | $(function() {
152 | $(window).load(function() {
153 | App.init();
154 | });
155 | });
156 |
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/Source code/Candidate/src/js/bootstrap.min.js:
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4 | 
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