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DEMOS2/static/js/event_setup.js

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2.8 KiB
JavaScript

var CSRF = $( "input[name='csrfmiddlewaretoken']" ).val();
function csrfSafeMethod(method) {
// these HTTP methods do not require CSRF protection
return (/^(GET|HEAD|OPTIONS|TRACE)$/.test(method));
}
function showSetupDialog(titleTxt, bodyTxt) {
var modalDialog = $('#EventSetupModalDialog');
var title = modalDialog.find('.modal-title');
var body = modalDialog.find('.modal-body');
title.text(titleTxt);
var bodyText = bodyTxt;
var p = document.createElement("p");
p.innerHTML = bodyText;
body.empty();
body.append( p );
modalDialog.modal('show');
}
function generateKeys() {
var parameter = $("#event-param").val();
var tempParams = JSON.parse(JSON.parse(parameter).crypto);
//the full objects need to be initalised as per the library, then copy the values we need into it
//I follow Bingsheng's code as to what objects are used in the parameter object
var ctx = new CTX("BN254CX"); //new context we can use
var n = new ctx.BIG();
var g1 = new ctx.ECP();
var g2 = new ctx.ECP2();
//copying the values
n.copy(tempParams.n);
g1.copy(tempParams.g1);
g2.copy(tempParams.g2);
var params = {
n:n,
g1:g1,
g2:g2
}
var PKbytes = [];
var SKbytes = [];
var keypair = keyGen(params);
keypair.PK.toBytes(PKbytes);
keypair.SK.toBytes(SKbytes);
var PKB64Encoded = "";
for(let i = 0; i < PKbytes.length; i++) {
PKB64Encoded += btoa(PKbytes[i]);
}
var SKB64Encoded = "";
for(let j = 0; j < SKbytes.length; j++) {
SKB64Encoded += btoa(SKbytes[j]);
}
$('input#public-key').val(PKB64Encoded);
$('input#secret-key').val(SKB64Encoded);
//mostly code from before here
var blob = new Blob([SKB64Encoded], {type : 'text/plain'});
var dlBtn = $('a#download-btn');
var url = URL.createObjectURL(blob);
$(dlBtn).attr("href", url);
let fileName = "sk-" + EVENT_TITLE.replace(/[\W]/g, "-");
$(dlBtn).attr("download", fileName);
$(dlBtn).attr("disabled", false);
$("#public-submit").attr("disabled", false);
}
function onAfterKeySend() {
showSetupDialog('Public Key Successfully Received',
'Thank you! You can now close down this page.');
}
function submitPublicKey() {
$.ajaxSetup({
beforeSend: function(xhr, settings) {
if (!csrfSafeMethod(settings.type) && !this.crossDomain) {
xhr.setRequestHeader("X-CSRFToken", CSRF);
}
}
});
$.ajax({
type : "POST",
url : window.location,
data : { public_key: $('input#public-key').val() },
success : function(){
onAfterKeySend();
}
});
}
$('#EventSetupModalDialog').on('hide.bs.modal', function (e) {
// Update page to reflect the fact that the PK submission has taken place
location.reload();
});