Update totp.js

js/totp.js

@@ -1 +1,29 @@
+function getUTCTime() {
+  var date = new Date(); 
+  var year = date.getUTCFullYear(); 
+  var month = date.getUTCMonth() + 1; 
+  var day = date.getUTCDate(); 
+  var hour = date.getUTCHours(); 
+  var minute = date.getUTCMinutes(); 
+  return [year, month, day, hour, minute]; 
+}
 
+function generateCode(utcTime) {
+  var sum = 0;
+  for (var i = 0; i < 5; i++) { 
+    sum += utcTime[i];
+  }
+  var code = sum ^ 3351 % 10000;
+  return code; 
+}
+
+function displayTimeAndCode() {
+  var utcTime = getUTCTime(); 
+  var code = generateCode(utcTime); 
+  var timeString = utcTime.join(":"); 
+  var codeString = code.toString(); 
+  var remaining = 60 - (Date.now() / 1000) % 60;
+  document.getElementById("time").innerHTML = timeString; 
+  document.getElementById("code").innerHTML = codeString; 
+  document.getElementById("progress").value = remaining;
+}