Lancaster-University
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DEMOS2
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This commit is contained in:
Rumperuu 2018-09-15 16:25:36 +01:00
parent cf2bf7de22
commit dff885437e
2 changed files with 16 additions and 11 deletions
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11
static/js/event_vote.js
View File

@ -557,8 +557,11 @@ function sendBallotsToServer(selection, selectedBallot, otherBallot) {
var ballotID = encodeURIComponent(btoa(JSON.stringify({voterID: voterID, eventID: eventID, pollNum: pollNum})));
// TODO: Generate a SK rather than using a static one. UUID generated server side and then injected JS side?
JSON.stringify(otherBallot)
var SK = "temporary";
var encAlt = sjcl.encrypt(SK, JSON.stringify(otherBallot));
var out = (new sjcl.misc.hmac(key, sjcl.hash.sha256)).mac(encAlt);
var hmac = sjcl.codec.hex.fromBits(out);
let selectedBallotAsStr = JSON.stringify(selectedBallot);
$.ajax({
@ -566,13 +569,13 @@ function sendBallotsToServer(selection, selectedBallot, otherBallot) {
url : window.location,
data : { handle: ballotID, encBallot: encAlt, ballot: selectedBallotAsStr, selection: selection },
success : function(){
onAfterBallotSend(ballotID, SK);
onAfterBallotSend(ballotID, SK, hmac);
}
});
}
// Called once the ballot has been sent to the back-end and dialog has closed
function onAfterBallotSend(ballotID, SK) {
function onAfterBallotSend(ballotID, SK, hmac) {
// With one ballot selected, we can display a QR code of the ballot ID
var modalDialog = $('#modalDialog');
var title = modalDialog.find('.modal-title');
@ -593,7 +596,7 @@ function onAfterBallotSend(ballotID, SK) {
// Add the second section: QR code that contains the ballot identifier
var QRCodeImg = document.createElement('img');
QRCodeImg.setAttribute('class', 'QR-code');
new QRCode(QRCodeImg, ballotID);
new QRCode(QRCodeImg, ballotID+";"+btoa(hmac));
body.append(QRCodeImg);
@ -602,7 +605,7 @@ function onAfterBallotSend(ballotID, SK) {
instructions2Div.setAttribute('class', 'containerMarginTop');
let instructions2Txt = "You will also be emailed the ballot identifier. However, you will need to note down the following " +
"secret in order to later verify your ballot was recorded as cast: ";
"secret in order to later verify your ballot was cast as recorded: ";
let instructions2P = document.createElement('p');
instructions2P.innerHTML = instructions2Txt;
instructions2Div.append(instructions2P);

16
static/js/vote_audit.js
View File

@ -32,17 +32,19 @@ $('#begin-test').click(function() {
var encoding = "";
var C1 = getBytes(fragment['C1'].split(","));
var C2 = getBytes(fragment['C2'].split(","));
var r = getBytes(fragment['r'].split(","));
var C1Bytes = getBytes(fragment['C1'].split(","));
var C2Bytes = getBytes(fragment['C2'].split(","));
var rBytes = getBytes(fragment['r'].split(","));
ciphertext.C1 = new ctx.ECP.fromBytes(C1);
ciphertext.C2 = new ctx.ECP.fromBytes(C2);
ciphertext.r = new ctx.BIG.fromBytes(r);
ciphertext.C1 = new ctx.ECP.fromBytes(C1Bytes);
ciphertext.C2 = new ctx.ECP.fromBytes(C2Bytes);
ciphertext.r = new ctx.BIG.fromBytes(rBytes);
// For each pair of C1,C2 values (i.e. one ballot's ciphertext) and the randomness used in its encryption r,
// test whether C2/(C1)^r = g^0 or g^1, and record g's exponent.
var m = ciphertext.C2 / Math.pow(ciphertext.C1, ciphertext.r);
//var c1 = ctx.PAIR.GTpow(ciphertext.C1, ciphertext.r);
var m = ciphertext.C2.div(Math.pow(ciphertext.C1, ciphertext.r));
console.log("m = "+m);
encoding += (m) ? "1" : "0";