54 lines
1.9 KiB
JavaScript
54 lines
1.9 KiB
JavaScript
function getBytes(arr) {
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for(var i = 0; i < arr.length; i++) {
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arr[i] = parseInt(arr[i]);
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}
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return new Uint8Array(arr);
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}
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$('#begin-test').click(function() {
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var ctx = new CTX("BN254CX");
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var ciphertext = {
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C1: null,
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C2: null,
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r: null
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}
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var ballot = JSON.parse(sjcl.decrypt($('#SK').val(), $('#ballot').text()));
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var votes = ballot['encryptedVotes'];
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$('#ballot-content').text(JSON.stringify(votes));
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var voteNum = 0, optionNum = 0;
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// For each encrypted vote within the ballot...
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votes.forEach(function(vote) {
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voteNum++;
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$('#ballot-result').text($('#ballot-result').text() + "Vote " + voteNum + ": \n ");
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// For each encrypted fragment within the vote (i.e. the encoded vote for one option)...
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vote['fragments'].forEach(function(fragment) {
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optionNum++;
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$('#ballot-result').text($('#ballot-result').text() + "Option " + optionNum + ": \n ");
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var encoding = "";
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var C1 = getBytes(fragment['C1'].split(","));
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var C2 = getBytes(fragment['C2'].split(","));
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var r = getBytes(fragment['r'].split(","));
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ciphertext.C1 = new ctx.ECP.fromBytes(C1);
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ciphertext.C2 = new ctx.ECP.fromBytes(C2);
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ciphertext.r = new ctx.BIG.fromBytes(r);
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// For each pair of C1,C2 values (i.e. one ballot's ciphertext) and the randomness used in its encryption r,
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// test whether C2/(C1)^r = g^0 or g^1, and record g's exponent.
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var m = ciphertext.C2 / Math.pow(ciphertext.C1, ciphertext.r);
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console.log("m = "+m);
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encoding += (m) ? "1" : "0";
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// Somehow, this string of 1s and 0s here needs to become _one_ 1 or 0 to signify whether the option was
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// voted for or not.
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$('#ballot-result').text($('#ballot-result').text() + encoding + "\n ");
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});
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});
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}); |